DE112009000897B4 - Measuring clamp, method for operating a measuring clamp and test-and-measuring device with a pistol grip - Google Patents

Abstract

Measuring jaw adapted to receive a removable and rechargeable battery part, the measuring jaw comprising: a main body having a first axis; a handle having a second axis including a first recess adapted to receive the battery part wherein the first recess includes first and second electrical terminals which are exposed when the battery part is not inserted into the first recess, the second axis forming an oblique angle with the first axis, and the battery part along the second axis a pair of pliers connected to the main body and aligned with the first axis, the pliers operable to measure an electrical property of a conductor based on an induced current; a trigger that, in use, selectively opens the pliers and can close; and a display device configured to display an indication of the electrical characteristic and attached along the first axis to a rear portion of the main body.

Description

background

Test and measurement devices, such as digital multimeters (DMM), clamp probes, thermometers, stud sensors and the like, are powered by replaceable or rechargeable alkaline batteries. For example, a typical test and measurement device includes a receiving area on a lower or rear surface of the device configured to receive a plurality (eg, 2, 3, 4, etc.) of alkaline batteries. The batteries are secured by a removable flap or plate in the receiving area, which is fixedly attached to the housing of the device. The alkaline batteries, which typically have a nominal voltage of 1.5V, are connected in series to provide operating power to the devices.

In many cases, these devices have special functions. For example, a digital multimeter is capable of producing electrical properties, such as e.g. Voltage and current, to measure and display the measured electrical characteristic. Clamps have the same or identical function as digital multimeters, but differ in the way some of the electrical properties are measured (for example, using inductive coupling). Thermometers, such as infrared thermometers, include a detector and a laser source for projecting an indication of the position or size of a measured area. Material detectors have the ability to detect posts of wood or metal hidden behind a surface and to produce an indication of a detected post via light emitting diodes (LED) or an acoustic display device, such as a small loudspeaker.

A Spannungsklemmzange of the type mentioned is for example from the US 5,349,289 A known. Dry batteries are arranged inside the housing.

Summary

A measuring clamp according to the invention is characterized by the features of claim 1.

Furthermore, the invention provides a method for operating a measuring clamp with the features of claim 9.

The invention also provides a test and measurement device having the features of claim 14.

Other aspects of the invention will become apparent upon consideration of the detailed description and the accompanying drawings.

list of figures

• 1 is a front perspective view of a handle of a test and measuring device according to an embodiment of the invention.
• 2 is a front view of the handle in 1 ,
• 3 is a bottom view of the handle in 1 ,
• 4 is a perspective view of a battery part.
• 5 is an exploded view of the battery part in FIG 4 ,
• 6 is a plan view of the battery part in 4 ,
• 7 is a rear perspective view of a measuring clamp according to an embodiment of the invention.
• 8th is a right side view of the clamp in 7 ,
• 9 is a left side view of the gauge in 7 ,
• 10 is a top view of the clamp in 7 ,
• 11 is a bottom view of the gauge in 7 ,
• 12 is a front view of the measuring pliers in 7 ,
• 13 is a rear view of the clamp in 7 ,
• 14 FIG. 15 is a front perspective view of a secondary battery door according to an embodiment of the invention. FIG.
• 15 is a rear view of the secondary battery lock in 14 ,
• 16 is a top view of the secondary battery lock in 14 ,
• 17 is a front view of a secondary battery door according to another embodiment of the invention.
• 18 FIG. 10 is a perspective view of a secondary battery door according to another embodiment of the invention. FIG.
• 19 FIG. 12 is a rear perspective view of a gauge jaw mechanism according to one embodiment of the invention. FIG.
• 20 is a plan view of the clamp pliers mechanism in 19 ,
• 21 is a side view of the clamp pliers mechanism in 19 ,
• 22 is a block diagram of the clamp in 7 ,
• 23 is a rear perspective view of an infrared thermometer according to an embodiment of the invention.
• 24 is a front view of the infrared thermometer in 23 ,
• 25 is a right side view of the infrared thermometer in 23 ,
• 26 is a left side view of the infrared thermometer in 23 ,
• 27 is a rear view of the infrared thermometer in 23 ,
• 28 is a top view of the infrared thermometer in 23 ,
• 29 is a bottom view of the infrared thermometer in 23 ,
• 30 provides an operating section of the infrared thermometer 23 represents.
• 31 is an exploded view of the infrared thermometer in 23 ,
• 32 is a block diagram of an infrared thermometer according to an embodiment of the invention.
• 33 FIG. 10 illustrates a process for operating an infrared thermometer according to one embodiment of the invention. FIG.
• 34 FIG. 4 illustrates a perspective view of a so-called ramped scanner according to an embodiment of the invention. FIG.
• 35 provides a plan view of the Wallscanner in 34 represents.
• 36 provides a front view of the wall scanner in 34 represents.
• 37 provides a side view of the wall scanner in 34 represents.
• 38 provides an exploded view of the Wallscanner in 34 represents.
• 39 represents an exploded view of a lower portion of the wall scanner in 34 represents.
• 40 provides an exploded view of a side portion of the wall scanner 34 represents.
• 41 FIG. 12 illustrates an exploded view of a control section and a display device according to an embodiment of the invention. FIG.
• 42 FIG. 4 is a block diagram of a ramped-edge scanner according to one embodiment of the invention. FIG.
• 43 FIG. 12 illustrates a control portion of a ramped wall scanner according to one embodiment of the invention. FIG.
• 44 FIG. 12 illustrates a plurality of display screens of a wall scanner according to one embodiment of the invention. FIG.
• 45 FIG. 12 illustrates a plurality of display screens of a wall scanner in a material detector mode according to one embodiment of the invention. FIG.
• 46 FIG. 12 illustrates a plurality of display screens of a wall scanner in a metal detector mode according to one embodiment of the invention. FIG.
• 47 illustrates a control process for a wall scanner according to an embodiment of the invention.

description

Before embodiments of the invention are explained in detail, it should be understood that the invention is not limited in its application to the details of construction and arrangement of components as set forth in the following description or illustrated in the following drawings. The invention may be practiced and practiced otherwise or carried out in various ways.

Test and measurement devices (eg, wall scanners, thermometers, digital multimeters, probes, etc.) and other non-motorized detection tools are generally lightweight and low power devices that are powered by one or more alkaline batteries. Of course, removable and rechargeable batteries (eg, nickel-cadmium or nickel-metal hybrid batteries) used in power tools can not be used with test and measurement devices due to the size and weight of the battery. However, lithium ion battery parts allow the use of replaceable and rechargeable battery parts with high voltage in these non-motorized measuring tools.

Because the test and measurement devices receive operating power from battery parts whose chemical principles are lithium based, the devices may have a variety of capabilities or functions in addition to their conventional capabilities and functions that increase the power requirements of the devices. A measuring clamp can, for example, be a strong LED Flashlight, a contactless voltage detector, a thermocouple, a control section or backlit actuators, a high-resolution or color LED display and / or an additional or remote display included. Conventionally powered metering probes (eg, metering probes powered by alkaline batteries) are either unable to provide the voltage and current required for these additional capabilities or the transit time (ie the time that the batteries can power the clamps before the batteries need to be replaced or recharged) of the alkaline batteries shortens. In contrast, the lithium-based battery parts are capable of providing power for both the additional capabilities of the forceps and conventional capabilities and functions, while maintaining a run time comparable to that of conventional clamp forceps that does not include additional capabilities or longer as this. Other test and measurement devices, such as infrared thermometers and wall scanners, may also include additional capabilities and functions when powered by the lithium battery parts.

An embodiment of the invention will be described with reference to a handle for a test and measurement device, such as the one disclosed in U.S. Pat 1 . 2 and 3 illustrated handle 10 , described. The handle 10 is a pistol grip and contains an outer housing 15 as well as a multitude of recesses. The outer case 15 for example, closes a first half 20 and a second half 25 one. The first and the second half 20 and 25 of the outer housing 15 are firmly attached to each other, for example in a two-shell arrangement. The first half 20 and the second half 25 form the plurality of recesses when they are interconnected. In other embodiments, the handle is 10 molded in one piece. A first recess 30 includes an mating mating surface, such as rails or a keyway (not shown), for slidably receiving a device, such as the battery pack. A second recess 35 is arranged to receive an operating device, such as a trigger or a button, for controlling at least part of the function of the device. In other embodiments, there are more or fewer recesses. The handle 10 is further adapted to ergonomically grip the shape of a user's hand (right or left) hand, so that the device can be held and operated with one hand, and the user need not change his line of sight, as so forth is described below.

The handle 10 is arranged so that a holding position of the device is offset so that a display device, the operating device and the operation of the device on a line of sight of the user or a first axis 40 are aligned. The handle 10 is at a lower portion of a main body of the device along a second axis 45 so attached that the handle 10 at an oblique angle to the first axis 40 located. In other embodiments, the handle is 10 almost perpendicular to the main body. The battery part will go along the second axis 45 of the handle 10 in the first recess 30 introduced to provide power to the test and measurement device.

One embodiment of the lithium-based battery pack for powering the test and measurement device is shown in FIG 4 . 5 and 6 shown. In the illustrated embodiment, the battery pack includes 100 Battery cells whose chemical composition is based on lithium, leaving the battery part 100 65% lighter and 50% smaller than an equivalent nickel cadmium battery part. The lithium ion battery part 100 also allows for longer operating time of the test-and-measure device and longer life (eg, a number of charge cycles) than the other non-lithium based battery parts.

The illustrated battery part 100 contains a disguise 105 , an outer casing 110 that with the panel 105 is connected, as well as a variety of battery cells 115 (please refer 5 ), in the disguise 105 are positioned. The costume 105 is shaped and sized to fit in the recess 30 in the device fits to the battery part 100 to connect with the device. The costume 105 contains an end cap 120 to the battery cells 115 essentially in disguise 105 include. The illustrated end cap 120 contains two power connections 125 , which are adapted to engage corresponding power terminals of the device. In other embodiments, the end cap 120 may have terminals 125 included, different from the battery pack 100 and are adapted to be received in sockets carried by the device. The end cap 120 also contains measuring or communication connections 130 (please refer 6 ) which are adapted to engage corresponding terminals of the device. The connections 130 are coupled to a battery circuit (not shown). The battery circuit may be configured to monitor various aspects of the battery pack 100, such as temperature of the part, state of charge of the part and / or cell, etc., and may also be configured to supply information and / or commands to and / or transmits and / or receives from the device. In In one embodiment, the battery circuit operates as described in US Pat. US Pat. No. 7,157,882 B2 presented and described under the title "METHOD AND SYSTEM FOR BATTERY PROTECTION EMPLOYING A SELECTIVELY-ACTUATED SWITCH", January 2 2007 and the entire content of which is hereby incorporated by reference. In another embodiment, the battery circuit operates as described in US Pat. US 2006/0 091 858 A1 presented and described under the title "METHOD AND SYSTEM FOR BATTERY PROTECTION" on May 24th 2005 and the entire contents of which are hereby incorporated by reference.

The costume 105 and the power connections 125 essentially enclose the connections of the device when the battery part 100 in the recess 30 is positioned. That is, the battery part 100 serves as a cover for the recess 30 and the connections of the device. If the battery part 100 is separated from the device and the panel from the recess 30 is removed, the battery terminals are exposed to the device generally to the environment.

The outer case 100 is with one end of the panel essentially the end cap 120 connected opposite and surrounding a section of the panel 105 , In the illustrated construction, when the panel 105 in the corresponding recess 30 is inserted or positioned in the device, the outer housing 110 generally aligned with an outer surface of the handle. In this construction, the outer housing 110 is designed to substantially follow the contours of the device and conform to the general shape of the handle. In such embodiments, the outer housing increases (stretches) 110 generally the length of the handle 10 the test and measurement device.

In the illustrated embodiment are two actuators 135 (only one of which is shown) and two tongues 140 in the outer housing 110 of the battery part 100 educated. The actuators 135 and the tongues 140 form a coupling mechanism for releasably securing the battery part 100 at the device. Every tongue 140 engages a corresponding recess formed in the device to the battery part 100 to lock. The tongues 140 are usually due to the elasticity of the material, which is the outer casing 110 forms, from the panel 105 stretched away (ie away from each other). Actuate (for example, press) the actuators 150 moves the tongues 140 on the panel 105 (ie towards each other) to and out of engagement with the recesses, leaving the battery part 100 from the recess 30 out and away from the device. The apparatus further includes a secondary battery lock (described below) that must be released before the battery pack 100 can be removed from the device. In other embodiments, the battery part 100 other suitable coupling mechanisms for releasably securing the battery part 100 contained on the device, as explained below.

The battery part 100 contains, as in 5 shown, three battery cells 115 who are in disguise 105 positioned and electrically connected to the terminals 125 are coupled. The battery cells 115 lead the test-and-measuring device operating current (for example, DC) to. In the illustrated embodiment, the battery cells are 115 arranged in series, and each battery cell 115 has a nominal voltage of about 4 V, so that the battery part 100 has a nominal voltage of about 12V. The cells 115 Furthermore, they have a nominal capacity of approximately 1.4 Ah. In other embodiments, the battery part 100 contain more or less battery cells 115, and the cells 115 may be arranged in series, in parallel or in a series-parallel combination. The battery part 100 For example, a total of six battery cells 115 in a parallel arrangement of two groups of three cells connected in series. The series-parallel combination of battery cells 115 creates a battery part 100 with a rated voltage of approximately 12 V and a nominal capacity of approximately 2.8 Ah. In other embodiments, the battery cells may be 115 have other rated voltages, such as 3.6V, 3.8V, 4.2V, etc., and / or may have other rated capacities, such as 1.2Ah, 1.3Ah, 2.0Ah, 2.4 Ah, 2.6 Ah, 3.0 Ah, etc. In other embodiments, the battery part 100 have a different rated voltage, such as 10.8V, 14.4V, etc. In the illustrated embodiment, the battery cells are 100 15 Lithium ion battery cells, which chemically consist of, for example, lithium cobalt ("Li-Co"), lithium manganese ("Li-Mn") or lithium Mn spinnels. In other embodiments, the battery cells may be 115 have other suitable lithium or lithium-based chemical compositions.

Another embodiment of the invention is related to a measuring clamp 200 described how they are in 7-13 is shown. The measuring clamp 200 contains, among other things, the handle described above 10 , a pincer 205 , a main body 210 , an embedded display device 215, a plurality of control buttons 220 , electrical connections or lines 225 , an opening for a secondary battery lock 230 (please refer 12 ), an operating device or a trigger 235 , a claw mechanism (see 9 ), a flashlight 237 and a contactless Voltage detector (not shown). The handle 10 can also function in the battery part 100 take up. The measuring clamp 200 In operation, it may measure various electrical characteristics or characteristics of circuit elements such as wires, capacitors, and the like.

The forceps 205 is at a front section 240 of the main body 210 the first axis 40 so attached, that the handle 10 also an oblique angle with respect to the pliers 205 forms. The forceps 205 carries and encloses a magnetic core for measuring current flowing through an object or medium (for example a wire). The forceps 205 For example, it allows a user to measure the electrical current flowing through the circuit element without disconnecting the element from the corresponding circuit. If the pliers 205 is opened, a conductor (for example, a wire) is positioned within an opening by the pliers 205 is formed so that the magnetic core substantially surrounds the wire. If the pliers 205 is closed, an alternating current flowing through the conductor induces a current in the clamp 205 ,

The display device 215 is along the first axis 40 at a rear section 245 of the main body 210 appropriate. The line of sight of the user is with the first axis 40 in alignment or parallel to it. In the illustrated embodiment, the display device 215 a liquid crystal display (LCD) such as a negative LCD (NLCD) with an electroluminescent backlight, however, it may alternatively be any suitable type of display. The negative LCD contains illuminated characters, such as white alphanumeric characters, on a black background. The NLCD will increase the visibility of the display 215 under unfavorable or inadequate lighting conditions, such as outdoors, in the dark, or when soiled. In some embodiments, the display is located 215 at a first angle with respect to the first axis 40 to improve the visibility of the display 215. The display device 215 further includes a screen shutdown time that is either preprogrammed or set by the user. When the screen off time is reached or elapses and none of the control buttons 220 is actuated and / or no measurements are carried out, the display device goes 215 into a standby or power saving mode to save power.

The control buttons 220 are close to the display device 215 on the handle 10 , disposed on the main body 210 or any combination of these positions. The position and shape of the buttons 220 allow it, the measuring clamp 200 to control without the user's line of sight from the display device 215 or the function of the measuring clamp 200 must move away. The control buttons 220 can be operated to select functions and settings of the clamp 200 adapt. A control knob 220 For example, it can be operated to null the gauge, a control knob 220 can be operated to change the unit of measurement of a displayed value (for example, from Fahrenheit to Celsius), a control knob 220 can be operated to temporarily hold or store a displayed value, a control knob 220 can be operated to display minimum and maximum readings, and a control knob 220 can be operated to display only a peak or break value.

The measuring clamp 200 also contains positive and negative connections 225 at the rear section 245 of the main body 210 essentially the pliers 205 are arranged opposite one another. The connections 225 In operation, probes may pick up electrical leads for probes (not shown) so that a user may be able to test other electrical characteristics or characteristics of a circuit. The connections 225 For example, they may be used to measure AC and DC, AC and DC voltages, resistance and capacitance of various circuit elements. In some embodiments, the ports 225 in operation receive a contact temperature sensor, such as a thermocouple (eg, a type K thermocouple). The thermocouple contains two metallic elements (eg a measuring point and a reference junction) which generate different output voltages. The difference between the output voltages is used to determine a contact temperature measurement. An ambient temperature sensor (not shown), such as a thermistor, may be used in combination with a reference cell for cold junction compensation of the thermocouple. In some embodiments, the thermocouple may functionally detect temperatures in the range of, for example, -40 ° C (-40 ° F) to 400 ° C (752 ° F).

The measuring clamp 200 contains, as in 10 shown, also a shim 250 coming from a top of the main body 210 will be carried. The dial 250 is electrically coupled to a control unit and may function in function mode (ie, the tested electrical characteristic) of the clamp 200 to change. That is, by operating (for example, rotating) the dial 250 the electrical property is adjusted with the measuring clamp 200 is measured. To the electrical properties, the measuring clamp 200 can measure, for example AC, DC, AC, DC, resistance, capacitance, continuity and temperature. Furthermore, a position of the dial 250 is an off position to flow of current from the battery part 100 to the measuring clamp 200 to interrupt.

In some embodiments, the gauge contains 200 a secondary battery lock, or other suitable lockable structure that prevents a user from easily removing the battery pack. In one embodiment, the clamp contains 200 For example, a secondary battery lock 300 as it is in 14-16 is shown. The secondary battery lock 300 works in conjunction with the actuators and tongues of the battery part 100 and can function the battery part 100 in addition to the measuring clamp 200 Fasten. In the illustrated embodiment, the secondary battery latch includes 300 a first end 305 with ball joints 310 for pivotally coupling the secondary battery lock 300 with the handle 10 the clamping tongs 200 , The secondary battery lock 300 contains a second end 315 with a flange 320 for engagement with a rib, a groove, a spline, etc. of the battery part 100. The secondary battery lock 300 will be in the opening 230 (please refer 12 ) of the handle 10 and is constructed so that it can be released only by using a separate tool such as a flat-head screwdriver or a knife. The secondary battery lock 300 must therefore be deliberately opened or out of engagement with the battery part 100 be solved before the battery part 100 can be removed. The secondary battery lock 300 further includes an arcuate central portion 325, which is the first end 305 and the second end 315 combines. The middle section 325 is designed to match the contours and curvature of the handle 10 adapts. In some embodiments, the middle section is 325 straight and does not fit the contours of the handle 10 at.

17 provides a secondary battery lock 400 according to another embodiment. The secondary battery lock 400 the same as above with reference to 14-16 described secondary battery lock 300 , The secondary battery lock 400 is behind a surface 405 or flap in the opening 230 of the handle 10 positioned. In some embodiments, the secondary battery latch includes 400 a first end, for example, ball joints for pivotally coupling the secondary battery lock 400 having the housing of the measuring clamp. In other embodiments, the secondary battery latch includes 400 a cylindrical recess for receiving a rod, a shaft or a pin. In these embodiments, the secondary battery latch 400 is pivoted about the cylindrical recess. The secondary battery lock 400 includes a second end having a flange for engagement with a rib, a groove, a spline, etc. of the battery pack. The secondary battery lock 400 further includes an arcuate central portion connecting the first end and the second end. The middle section is constructed to conform to the contours and curvature of the handle 10 adapts.

Contact with the secondary battery lock 400 gets over a keyhole 410 in the area 405 of the handle 10 produced. The keyhole 410 is constructed so that the secondary battery lock 400 can only be released using a separate tool, such as a flat screwdriver or a knife. The tool becomes in the keyhole 410 introduced to contact with the secondary battery lock 400 to manufacture the battery lock 400 is forced to pivot about the first end, and the battery lock gives the battery part 100 free. The secondary battery lock must therefore be opened deliberately or out of engagement with the battery part 100 be solved before the battery part 100 can be removed.

18 provides a secondary battery lock 500 according to another embodiment. The secondary battery lock 500 the same as above with reference to 14-16 described secondary battery lock 300 , The secondary battery lock 500 contains however a screw 505 with a first cam 510 , The secondary battery lock 500 contains a first end 515 , for example, a cylindrical recess 520 for receiving a rod, a shaft or a pin and a first flange 525 or has a surface. In these embodiments, the secondary battery lock becomes 500 around the cylindrical recess 520 panned around. In other embodiments, the secondary battery latch includes 500 Ball joints for pivotally coupling the secondary battery lock to the handle 10 , The secondary battery lock 500 contains a second end 530 with a second flange 535 for engagement with a rib, a groove, a spline, etc. of the battery part 100 , The secondary battery lock 500 further includes an arcuate central portion 540 that's the first end 515 and the second end 530 connects. The middle section 540 It is designed to match the contours and curvature of the handle 10 adapts. The secondary battery lock 500 is detached from the battery part 100 by the screw 505 using a separate tool, such as a Screwdriver or a knife, is rotated. Access to the screw 505 via a cutout in the handle 10 or a keyhole, the above with reference to 17 is similar. If the screw 505 is turned, becomes the first cam 510 in engagement with the first flange 525 turned. The first cam 510 causes forced rotation of the first flange 525 around the cylindrical recess 520 and loosening the second flange 535 from the battery part 100 , In some embodiments, the screw is 505 spring-loaded, so that causes the screw 505 the secondary battery lock 500 closes or engages with the battery part 100 turns when the battery part 100 in the first recess 30 is introduced. Accordingly, the secondary battery lock must be 500 deliberately out of engagement with the battery part 100 be solved before the battery part 100 can be removed.

The trigger 235 the measuring clamp 200 For example, in operation may be a claw mechanism for opening and closing the forceps 205 Taxes. The trigger 235 Can also function in the LED flashlight 237 turn. In one embodiment, the forceps 200 includes a jaw mechanism 600 as he is in 19-21 is shown. The claw mechanism 600 contains the trigger 235 , a conductor or switch 605 , an LED flashlight circuit 610, a plunger 615 , a first spring 620 , a second spring 625 , a first claw 630 and a second claw 635 , In the illustrated embodiment, the jaw mechanism 600 may function both an LED flashlight 237 activate as well as the first and the second claw 630 and 635 to open. The desk 605 is a two-stage switch. The trigger 235 is about one point 640 pivoted around, that the flashlight circuit 610 is set in a rotational movement. The trigger 235 For example, it is pressed in by a first distance to the switch 605 Close and activate the LED flashlight 237. When the switch 235 is pressed, moves a terminal contact of the flashlight circuit 610 in the direction opposite to the movement of the trigger 235 and approach the switch 605 , After the trigger 235 has been pressed in by the first distance, the connection contact of the circuit comes 610 with the switch 605 in contact and includes a LED flashlight circuit 610 , When the LED flashlight circuit 610 is closed, one through the battery pack 100 provided voltage to the terminals of the LED flashlight 237 applied, and the LED flashlight 237 lights up.

When the trigger 235 is pushed further, the upper section of the shutter comes 235 with the pestle 615 in contact and generates a linear movement to the first and second jaw 630 and 635. The pestle 615 comes with the first and second claw pawls 655 and 660 the first and the second claw 630 and 635 coupled. The first spring 620 and the second spring 625 are also with a first or a second hook 655 and 670 coupled to a resilient connection between the first and the second jaw 630 and 635 and the main body 210 manufacture. After the trigger 235 has been pressed in by a second distance, the upper portion of the trigger pushes the plunger 615 in the first and the second claw 630 and 635 into it. The linear movement of the plunger 615 is in a rotational movement of the first and second claw 630 and 635 converted to a first and a second jaw pivot axis 675 and 680 around. When the trigger 235 is completely pushed in, is the plunger 615 fully extended, and the pliers 205 causes maximum separation between the first and second jaws 630 and 635 , leaving a wire or other conductor in the pliers 205 can be arranged.

After the conductor in the pliers 205 has been arranged, will be the trigger 235 let go to the first and the second claw 630 and 635 close. If the user needs the LED flashlight 237 to remove one from the pliers 205 enclosed area or an area in front of the measuring clamp 200 to illuminate, can be the trigger 235 be partially loosened, leaving the terminal contact of the LED flashlight circuit 610 with the switch 605 keeps in touch with the LED flashlight circuit 610 close. Alternatively, the trigger 235 be completely solved, and the LED flashlight 237 will be deactivated. If the first and the second claw 630 and 635 are closed, the magnetic core is in the pliers 205 closed, and an induced current can be used to measure the current in the conductor. In some embodiments, the trigger is 235 coupled with a geared mechanical actuator. In other embodiments, the forceps 205 be electronically opened and closed when the trigger 235 is pressed or released, or another mechanical jaw mechanism can be used.

The flashlight 237 may include a light bulb, a plurality of light-emitting diodes or the like. In one embodiment, the LED flashlight includes 237 three strong LEDs and has, for example, an illuminance of 250 lux at a distance of 2 feet. In some embodiments, the illuminance of the LED flashlight is 237 greater than 250 LUX at a distance of 2 feet. In some embodiments, the LED flashlight is integral with the gauge 200 trained or can be separated from her. In these embodiments, the flashlight includes 237 a secondary power source that is being charged or otherwise receiving power from the battery pack 100 receives. The LED flashlight 237 also includes a flashlight turn-off time. The flashlight turn-off time may have a preprogrammed value or may be set by the user. When the flashlight off time is reached or elapsed and the LED flashlight 237 has not been switched off, the measuring clamp switches 200 the LED flashlight 237 out to save electricity.

The contactless voltage detector (not shown) is at a base of the forceps 205 arranged on the main body 210. A voltage detection circuit is in the clamp 200 and illuminates a voltage detection display, such as an LED, when detecting an AC voltage. In some embodiments, all or part of the voltage sensing circuitry is included in a gauge controller (described below). The voltage detection circuit may detect alternating voltages in the range of, for example, 90 V to 600 V in operation. In some embodiments, the non-contact voltage detector voltage detection circuit may detect AC voltages whenever the gauge is turned on. In other embodiments, the non-contact voltage detector may be selectively activated using a control button or switch for the contactless voltage detector. In other embodiments, the gauge includes a removable contactless voltage detector (not shown) such as disclosed in co-pending U.S. Patent Application Serial Number 12 / 421,187, filed on April 9 2009 entitled "SLIDABLY ATTACHABLE NON-CONTACT VOLTAGE DETECTOR", the entire contents of which are hereby incorporated by reference, which may be slidably mounted on the measuring pliers.

22 is a block diagram of the measuring clamp 200 in 7 , In addition to the components and structures of the measuring clamp 200 , as described above, contains the measuring clamp 200 also a control unit 700 , The control unit 700 receives signals from the pliers 205 , the contactless voltage detector 705 , the electrical lines or connections 225 , the dial 250, the control knobs 220 , the trigger 235 and the battery part 100 , The control unit 700 processes the signals and / or prepares them and outputs the conditioned signals to the display device, for example 215 or another display device such as the voltage detection display. The control unit 700 The measuring clamp contains, for example, at least one printed circuit board. On the circuit board is a variety of electrical and electronic components that serve function control and protection of the clamp. In some embodiments, the circuit board includes a control or processing unit, such as a microprocessor, a microcontroller, or the like. In some embodiments, the controller includes 700 For example, the processing unit, a memory, and a bus. The bus connects various components of the control unit 700 including the memory with the processing unit. The memory, in some embodiments, includes read only memory (ROM) and random access memory (RAM). The controller 700 further includes an input / output system that includes routines for communicating information between components within the controller 700 contains. Software included in the implementation of the measuring clamp is in the ROM or RAM of the control unit 700 saved. The software includes, for example, firmware applications and other executable instructions. In other embodiments, the control unit may 700 contain additional, less or other components.

The circuit board further includes, for example, a variety of additional passive and active components, such as resistors, capacitors, inductive components, integrated circuits and amplifiers. These components are arranged and connected such that the circuit board performs a variety of electrical functions including, but not limited to, filtering, signal conditioning, and voltage regulation. For descriptive purposes, the circuit board and the electrical components located on the circuit board are collectively referred to as "the control unit" 700. The display device 215 receives the processed and conditioned signals from the control unit 700 and indicates a value (for example, a number) corresponding to the measured current or an indication of a control parameter of the measuring clamp 200 (for example, a capture mode).

In some embodiments, a battery pack controller (not shown) provides the meter controller control unit 700 with information relating to a temperature or voltage level of the battery pack. The control unit 700 The clamp and battery pack may further include undervoltage monitors and state of charge monitors. The monitors serve the control unit 700 of the clamp or controller of the battery pack to determine if the battery pack is in an undervoltage condition, possibly the proper functioning of the clamp 200 prevents or if the battery part is in a state of charge, the the battery part 100 makes it vulnerable to damage. If there is such an undervoltage condition or state of charge, the clamp will become 200 shut off, or it will otherwise prevent further power of the battery part 100 is discharged to prevent the battery part 100 is further emptied.

Another embodiment of the invention will be described with reference to an infrared thermometer. 23-29 make an infrared thermometer 810 which, among other things, has a handle 815 , a main body 820 , an embedded display device 825 , a control device or a trigger 830 , an operating section 835 , a handle section 840 and a removable and rechargeable high voltage battery part (described below). The handle 815 is essentially similar to the above with reference to 1-3 described handle 10 , The handle portion includes a recess for receiving the battery part 100 is set up as above with reference to 4-6 is described.

The display device 825 is at a rear portion of the main body 820 along the first axis 850 appropriate. The line of sight of the user is aligned or parallel to a first axis 850 , In the illustrated embodiment, the display device 825 a liquid crystal display (LCD) such as a negative LCD (NLCD) with an electroluminescent backlight, however, it may alternatively be any other suitable type of display. The negative LCD contains illuminated characters, such as white alphanumeric characters, on a black background. The NLCD will increase the visibility of the display 825 under unfavorable or inadequate lighting conditions, such as outdoors, in the dark, or when soiled. In some embodiments, the display is located 825 at an offset angle with respect to the first axis 850 to increase the visibility of the display device 825 to improve. The display device 825 also includes a screen shutdown time that is either preprogrammed or set by the user. When the screen shutdown time is reached or elapses and no buttons in the operation section 835 are operated and / or no measurements are performed, the display goes 825 into a standby or power saving mode to save power.

The operating section 835 is in 30 shown. The operating section 835 is located close to the display device 825 and includes a plurality of control buttons. The position and shape of the control buttons make it possible to use the thermometer 810 to operate without the user's line of sight from the display device 825 or move away from the function of the thermometer 810. In the illustrated embodiment, the operating section 835 for example, below the display device 825 arranged. The operating section 835 contains a mode button 860 , an up button 865 , a down button 870 , an 875 Settings button, a Log Store button 880 , a warning button 885 and a Flashlight Button 890. The Mode Button 860 is operated to select an operating mode from, for example, a menu or a predetermined set of operating modes. The mode button 860 allows a user to scroll through, for example, a variety of operating modes, such as an average temperature mode, a maximum temperature mode, a minimum temperature mode, a humidity mode, a dew point mode, a wet temperature mode, and a contact temperature mode , In some embodiments, the mode button becomes 860 repeatedly pressed to go through the operating modes of the 810 thermometer. In other embodiments, the mode button becomes 860 once pressed, and the up and down buttons 65 and 870 are used to through operating modes 810 to scroll the thermometer. The selected mode of operation determines the information displayed on the display 825 are displayed. In some embodiments, the thermometer is 810 So a menu-driven device. In some embodiments, the thermometer includes 810 Also, one or more LEDs that indicate to the user the status or operating mode of the thermometer, the battery pack, or both.

Additional knobs may be attached to the handle 815 and / or the main body 820 are located. For example, there is an electronic trigger lock button 895 on the handle 815 and allows the thermometer 810 Performs a continuous non-contact temperature measurement without the trigger 830 is pressed. In some embodiments, the thermometer performs 810 the contactless temperature measurement through, until the user releases the shutter 830 push in a second time. In other embodiments, the continuous measurement is performed until the trigger lock button 895 is deactivated or a predetermined time limit (for example, 20 minutes) is exceeded.

If the thermometer 810 in the average temperature mode, an indication is made that the thermometer 810 in the average temperature mode works on the display device 825 displayed. In one embodiment, the letters "AVG" are displayed. When operating in the average temperature range Mode is the average temperature during a single temperature measurement (eg the time during which the trigger 830 is pressed) also on the display device 825 displayed. When the thermometer 810 is operating in the maximum temperature mode, an indication that the thermometer 810 is operating in the maximum temperature mode is displayed on the display 825 displayed. In one embodiment, the letters "MAX" are displayed. When operating in maximum temperature mode, the maximum temperature is also displayed during a single temperature measurement. If the thermometer 810 operating in the minimum temperature mode, is an indication that the thermometer 810 operating in the minimum temperature mode, on the display device 825 displayed. In one embodiment, the letters "MIN" are displayed. When operating in the minimum temperature mode, the minimum temperature also becomes on the display during a single temperature measurement 825 displayed. If the thermometer 810 working in humidity mode, is an indication that the thermometer 810 operating in the humidity mode, on the display device 825 displayed. In one embodiment, the letters "HUM" are displayed, as well as an indication of a relative humidity reading (eg, "RH%"). When operating in Humidity mode, a three-digit relative humidity (eg, 96.3) is displayed. If the thermometer 810 In dew point mode, an indication that the thermometer 810 is operating in dew point mode is displayed on the display 825 displayed. In one embodiment, the letters "DEW" and a calculated dew point are displayed. When the thermometer 810 is in the humid temperature mode, an indication is displayed that the thermometer 810 works in wet-temperature mode. In one embodiment, the letters "WET" and a wet temperature calculation are displayed. If the thermometer 810 working in the contact temperature mode, there is an indication that the thermometer 810 in contact temperature mode, displayed. In one embodiment, the letters "CON" and a contact temperature measurement are displayed on the display 825.

With the settings button 875 can function in different thresholds and functions of the thermometer 810 be adjusted or modified. The setting button 875 For example, it is operated to scroll through the thresholds and functions that the user can control. The setting button 875 For example, it allows a user to set a high temperature alarm threshold, a low temperature alarm threshold, a protocol measurement, a light level, and temperature measurement units (eg, Fahrenheit or Celsius) and a laser (see FIG 31 ) on and off. In some embodiments, the setting button becomes 875 repeatedly pressed to move through the thresholds and functions. In other embodiments, the adjustment knob 875 is operated once, and the up and down buttons 865 and 870 are used to scroll through thermometer thresholds and functions.

When the high temperature alarm threshold is set, the user presses the set button 875 until the letters "HI" on the display 825 appear. The user adjusts the high temperature alarm threshold using the up and down buttons 865 and 870 at. The alarm is activated when the contactless temperature reading is above the high temperature alarm threshold. When the cryogenic alarm threshold is set, the user presses the setting button 875 until the letters "LOW" on the display 825 appear. The user adjusts the high temperature alarm threshold using the up and down buttons 865 respectively. 870 at. The alarm is activated when contactless temperature measurement is below the low temperature alarm threshold. The alarm is activated using the alarm button 885 switched between on and off. When a protocol value is set, the user presses the setting button 875 until the letters "LOG" on the display 825 appear. The thermometer 810 Also indicates a number (for example, between 1 and 20) that indicates a log value location. For example, if a log value was previously stored in a log value location, the previously stored log value is displayed. The user may scroll through the stored log values using the up and down buttons 865 and 870, respectively. The user can override the previously saved log value by pressing the log store button 880 pressed when a specific log value location is displayed. The user sets the light intensity of the thermometer 810 by clicking the Settings button 865 pressed until the symbol ε is displayed. The user adjusts the intensity level using the up and down buttons 865 respectively. 870 at. The user turns the laser on and off by pressing the Settings button 875 pressed until a laser symbol (for example, a safety symbol for a class 2 ), and uses the up and down buttons 865 and 870, respectively, to selectively activate and deactivate the laser.

31 represents an exploded view of the infrared thermometer 10 The thermometer 810 contains, inter alia, one Auslöserarretier button 895 , an infrared temperature sensor 900, a contact temperature sensor terminal 905 , a humidity sensor 910 , a buzzer 920 , an LED flashlight 925 , a laser module 935 , a convex lens 940 , a cylindrical aluminum tube 945 as well as an LCD arrangement 950 , The flashlight 925 is made using the Flashlight Button 890 in the operating section 835 switched on and off. The flashlight 925 may include a light bulb, a plurality of light-emitting diodes or the like. In one embodiment, the LED flashlight includes 925 three high-power LEDs and has a luminous intensity of, for example, 250 lux at a distance of 2 feet. In some embodiments of the invention, the illuminance of the LED flashlight 925 is greater than 250 LUX at a distance of two feet. In some embodiments, the LED flashlight is 925 integral with the thermometer 810 trained or can be removed from it. In these embodiments, the flashlight 925 includes a secondary power source that is charged or otherwise receiving power from the battery pack. The LED flashlight 925 also includes a flashlight turn-off time. The flashlight turn-off time may have a preprogrammed value or may be set by the user. When the flashlight off time is reached or elapsed and the LED flashlight 925 has not been switched off, the thermometer 810 switches the LED flashlight 925 to save electricity.

32 is a block diagram of the infrared thermometer 810 , The thermometer 810 contains a thermometer control unit 1000 , the infrared temperature sensor 900 , the contact temperature sensor terminal 905, the humidity sensor 910 , an ambient temperature sensor 1005, the operating section 835 and the display device 825 , The control unit 1000 contains a variety of differential amplifiers 1010 , a variety of analog-to-digital converters 1015 , a processing module 1020 , an infrared temperature output 1025 , a contact temperature output 1030, a humidity output 1035 , an ambient temperature output 1040, a memory module 1045 , an infrared temperature compensation module 1050 , a contact temperature compensation module 1055, and a humidity compensation module 1060 , In some embodiments, the analog-to-digital converters are 1015 24-bit precision delta-sigma analog-to-digital converter. The thermometer control unit 1000 also contains, for example, at least one printed circuit board. On the circuit board is a variety of electrical and electronic components, the power supply, function control and protection for the thermometer 810 enable. In some embodiments, the circuit board includes the processing module 1020 which is a microprocessor, for example. The control unit 1000 further includes a bus for connecting the various components and modules residing in the control unit 100 are or are connected to it. Memory module 1045, in some embodiments, includes read-only memory (ROM) such as EEPROM and random access memory (RAM). The control unit 1000 further includes an input / output system that includes routines for communicating information between components and modules within the control unit 1000. Software used in the implementation of the thermometer 810 is contained in the ROM or RAM of the control unit 1000 saved. The software includes, for example, firmware applications and other executable instructions. The infrared temperature compensation module 1050 and the contact temperature compensation module 1055 use output signals from the humidity sensor 910 or the ambient temperature sensor 1005 to compensate for temperature measurements, and produce a compensated infrared temperature output and a compensated contact temperature output. The humidity compensation module 1060 uses an output from the ambient temperature sensor to compensate for humidity measurements and produce compensated humidity outputs. In other embodiments, the control unit may 1000 contain additional, less or other components.

For example, the circuit board also includes a variety of additional passive and active components, such as resistors, capacitors, inductive components, integrated circuits, and amplifiers. These components are arranged and connected to perform a variety of electrical functions for the printed circuit board, including detection, filtering, signal conditioning, and voltage regulation, among others. For descriptive purposes, the circuit board and the electrical components located on the circuit board are collectively referred to as "the control unit" 1000. The control unit 1000 empI captures signals from the infrared temperature sensor 900 , the contact temperature sensor port 905, the humidity sensor 910 and the ambient temperature sensor 1005 , processes or processes the signals and transmits the processed and conditioned signals to the display device 825 , In some embodiments, the infrared temperature sensor 900, the contact temperature sensor port 905 and the humidity sensor is calibrated or recalibrated using the ambient temperature signal. The display device 825 receives the processed and conditioned signals and indicates to the user an infrared temperature measurement, a Contact temperature measurement, a humidity, a dew point or the like.

In some embodiments, a battery pack controller (not shown) provides information to the thermometer controller 1000 that relates to a temperature or voltage level of the battery pack. The thermometer control unit 1000 and the battery pack further include undervoltage monitors and charge state monitors. The monitors are used by the thermometer control unit 1000 or the battery pack control unit to determine if an undervoltage condition of the battery pack 100 present, possibly the proper functioning of the thermometer 810 prevents or the battery part is in a state of charge, in which the battery part is prone to damage. When there is such an undervoltage condition or state of charge, the thermometer becomes 810 Turned off, or otherwise prevents power from the battery pack 100 is further discharged to prevent the battery part is further emptied.

The infrared temperature sensor 900 is for example a thermopile. The thermopile includes a plurality of thermoelectric elements (eg, thermocouples) connected in series to form a detection area or detector, and the detection area is covered with an infrared radiation absorbing material. A lens focuses infrared energy on the detector, and the thermopile outputs a signal that is directly proportional to the energy of the infrared radiation impinging on the detector. In some embodiments, the infrared temperature sensor 900 in operation, detect temperatures in the range, for example, from -30 ° C (-22 ° F) to 800 ° C (1472 ° F). The contact temperature sensor terminal 905 is, for example, a thermocouple terminal and may functionally receive a thermocouple, such as a K-type thermocouple. The combination thermocouple and thermocouple connector is referred to herein as the thermocouple 905. The thermocouple 905 contains two metal elements (for example a measuring point and a reference junction), which generate different output voltages. The difference between the output voltages is used to determine a contact temperature measurement. The ambient temperature sensor 1005 (for example, a thermistor) is used in combination with a look-up table for cold junction compensation of the thermocouple 905. In some embodiments, the thermocouple may 905 in operation, detect temperatures in the range of, for example, -40 ° C (-40 ° F) to 550 ° C (1022 ° F). The thermocouple can be used independently of the temperature sensor. An output of the thermocouple 905 is not used to compensate for or otherwise modify an output of the thermopile. The thermopile may, in operation, contactlessly sense a first temperature of a first region, and the thermocouple 905 may, in use, detect a second temperature of a second region via contact. In some embodiments, the first region and the second region are on the same object, and the thermocouple 905 Can be used in conjunction with the infrared temperature sensor 900 can be used, for example, to allow both contactless and contact temperature measurements of an object. In other embodiments, the first region is at a first object, and the second region is at a second object.

The moisture sensor 910 provides a signal to the control unit 1000 ready to display the humidity in the area surrounding the thermometer 810 surrounds. The moisture sensor 910 For example, a resistance hygrometer uses a polymer membrane having a conductivity that varies with the amount of water absorbed. The humidity sensor 910 is used to detect the infrared temperature sensor 900 to calibrate and to compensate for measurements made using the infrared temperature sensor 900 and the thermocouple 905. In some embodiments, the moisture on the display device 825 displayed.

The thermometer 810 also includes a distance-point ratio. The distance-point ratio is a ratio of a distance to an object and a diameter of a temperature measurement range (ie, a dot size) to each other. For example, if the distance-to-point ratio is 20: 1, the infrared temperature sensor averages 900 the temperature of an object 20 feet away over a 1 foot diameter area. The further the infrared temperature sensor 900 is removed from the object, the larger the dot size. In some embodiments, the infrared temperature sensor closes 900 Settings for measuring the temperature of both reflective and non-reflective surfaces.

In some embodiments, the thermometer includes 810 also a rangefinder (not shown). The rangefinder is for example a laser rangefinder. The rangefinder uses a transit time of a light pulse or an ultrasonic wave to determine a distance to the object. The rangefinder measures the time it takes for the light pulse or ultrasonic wave to travel to and from the object. Based on the term and a known velocity of light (or sound), the distance to the object is calculated. In other embodiments of the invention, other methods are used to determine the distance to the object, such as a multiple frequency phase-shift technique.

The spot size is calculated using the distance-to-point ratio of the infrared temperature sensor 900 and a range finding from the rangefinder. The rangefinder and the infrared temperature sensor 900 For example, they are aligned along an axis so that the rangefinder and the temperature sensor are approximately the same distance from the object. The rangefinder uses a single beam of light to measure the distance from the thermometer 810 to determine the object. The thermometer 810 uses the distance measurement from the range finder and the distance-point ratio to calculate the diameter of a measurement area on the object. The thermometer 810 then displays, for example, a numeric representation of the point size, an area of the point, or both. In other embodiments, an optical representation of the measurement area and / or the spot size is displayed.

33 represents a process 1100 for performing a temperature measurement using the thermometer 810 dar. The thermometer 810 First determines whether the battery part 100 is in an undervoltage state (step 1105 ). When the battery part 100 is in an undervoltage state, a battery low voltage warning is triggered (step 1110 ). In some embodiments, the battery low voltage warning is displayed on the display 825 displayed. In other embodiments, an LED lights up or a buzzer sounds to output the battery low voltage warning. If there is no undervoltage condition, the thermometer can 810 Carry out temperature measurements. A standard function and display mode for the thermometer 810 is the mode for performing contactless temperature measurement. To perform an infrared temperature measurement (step 1115 ), the user presses the trigger 830 , Temperature measurements are carried out as long as the trigger 830 is pressed. Alternatively, when the electronic shutter lock button 895 is pressed, a continuous temperature measurement can be performed without the trigger 830 is pressed continuously. The thermometer 810 then determines if a thermocouple 905 is present (step 1120 ). If a thermocouple 905 is present, a contact temperature measurement is performed (step 1125 ), and the relative humidity is measured using the humidity sensor 910 (step 1130 ). If no thermocouple 905 is present, the 810 thermometer measures the relative humidity using the humidity sensor 910 (Step 1130). The thermometer 810 then determines if the measured infrared temperature is above the high temperature alarm threshold or below the low temperature alarm threshold (step 1135 ). If the measured infrared temperature is outside the high and low thresholds, a temperature range warning is triggered (step 1140 ). In some embodiments, the temperature range warning is displayed on the display 825. In other embodiments, an LED lights up or a buzzer sounds to issue the temperature range alert. If the measured infrared temperature is not above the high temperature alarm threshold or below the low temperature alarm threshold, the measured temperature is displayed on the display 825 (step 1145 ).

Another embodiment of the invention will be described with reference to a so-called ramped scanner which is capable of detecting a plurality of objects hidden behind a plurality of different surfaces. The wall scanner includes a housing, a plurality of sensors, a display device, an operating section and a plurality of wheels. The housing includes a body portion and a handle portion similar to that described above 1-3 described handle 10 like. The handle portion includes a recess for receiving the battery part 100 is set up as above with reference to 4-6 is described.

34-41 set the Wallscanner 1205 and the case 1210 according to an embodiment of the invention. A grip portion 1215 of the housing 1210 of the wall scanner includes a battery-part recess 1220 (see 38 ), which is used to pick up the battery part 100 is set up. The battery compartment recess 1220 contains a variety of connectors (in 40 1345) for electrically connecting the battery part 100 with the wall scanner 1205 , Furthermore, the grip section contains 1215 a plurality of recessed gripping sections 1235 that provide additional support to a user.

The grip section 1215 and the battery part 100 form a first axis 1241 of the wall scanner 1205 , The grip section 1215 is with the body section 1240 of the wall scanner 1250 so connected and so extends from it, that a recess 1245 between the body portion 1240 and the handle portion 1215 is trained. The extension of the handle portion 1215 of the body portion 1240 allows the wall scanner 1205 the battery part 100 receives. In some embodiments, the recess is 1245 between the handle section 1215 and the body part 1240 closed by a first and a second connecting portion 1250 and 1255, respectively. In other embodiments, the recess 1245 is open and includes a single connection portion. The recess 1245 forms a space in which a user's fingers are picked up when the user selects the wallscanner 1205 holds.

The grip section 1215 extends approximately over half the length of the housing 1210 and is approximately parallel to the body portion 1240 and a display device 1260 , In one embodiment, the first axis is 1241 parallel to a second axis 1243 passing through a middle of the body section 1240 hindurchverläuft. In other embodiments, the first axis is 1241 not parallel to the second axis 1243 , and the first axis 1241 cuts the second axis 1243 at a point at a distance d to the wall scanner 1205 , The indicator 1260 is thus on the body portion 1240 positioned so that the display device 1260 is not obscured by the user's hand when the wall scanner 1205 is held. The operating section 1265 is at the first connection section 1250 between the body section 1240 and the handle portion 1215 of the wall scanner 1205 available. The operating section 1265 is at an oblique angle with respect to the body portion 1250 of the housing positioned so that the buttons or switches (described below) within the operating section 1265 can be activated by the user with the same hand, with which the user the Wallscanner 1250 holds. In some embodiments, the wall scanner includes 1205 Also, one or more LEDs providing the user with the status of the wall scanner 1205 of the battery pack 100 or from both. The wheels 1270 are rotatable with the housing 1210 connected to movement of the wall scanner 1205 to facilitate on a surface. In the illustrated embodiment, the wheels are 1270 However, wheels, as an alternative, may also be driven wheels that are from the battery pack 100 be powered.

38 represents an exploded view of the in 34-41 shown wallscanner 1205 dar. The Wallscanner 1205 contains a basic housing arrangement 1300 , a right and a left housing assembly 1305 and 1310 , a control panel arrangement 1315 and battery part 100. An exploded view of the base housing assembly 1300 is in 39 shown. The basic housing arrangement 1300 includes a main circuit board assembly 1320 , a sensor plate 1325 comprising post sensors for detecting posts, a D-coil sensor 1330 for detecting metal, a base 1335 as well as the wheels 1270 , An exploded view of the right housing assembly 1305 is in 40 shown. The left housing arrangement 1310 resembles the right housing arrangement 1305 and will not be described in detail. The right housing arrangement 1305 contains contact plate connections 1345 , a battery contact circuit board 1350 , a right half of the case 1355 , a display lens 1360 and an LED 1365 , An exploded view of the control panel assembly 1315 is shown in FIG 41 shown. The control panel layout 1315 contains a keypad 1370 , a keyhole 1375 , a rubber button 1380 , a light guide 1385 , a key board 1390, a key panel 1395 , an LCD lens 1400 and an LCD assembly 1405.

42 is a block diagram of a wall scanner 1205 according to an embodiment of the invention. The wall scanner 1205 contains a main system module 1415 , the material sensor 1325 , the D-coil sensor 1330 and the display device 1260 , The main system module 1415 contains among other things a Wallscanner control unit 1420 , a signal conditioning module 1425 , a peak-acquisition module 1430 and an analog-to-digital conversion module 1435 , The display device 1260 For example, a 128 × 64 dot matrix liquid crystal display (LCD) or a negative LCD (NLCD) is used. The Wallscanner control unit 1420 contains, for example, a circuit board like the one in 39 shown circuit board 1320 , On the circuit board 1320 is a variety of electrical and electronic components, the function control and protection of the wall scanner 1205 enable. In some embodiments, the circuit board includes 1320 a control or processing unit, such as a microprocessor, a microcontroller, or the like. In some embodiments, the controller includes 1420 For example, the processing unit, a memory, and a bus. The bus connects various components of the control unit 1420 including the memory with the processing unit. The memory contains in many cases read-only memory (ROM) and random access memory (RAM). The control unit 1420 further includes an input / output system that includes routines for communicating information between components within the controller. Software included in the implementation of the Wallscanner 1205 is in the ROM or RAM of the control unit 1420 saved. The software includes, for example, firmware applications and other executable instructions. In other embodiments, the control unit may 420 contain additional, less or other components.

The circuit board 1320 further includes, for example, a variety of additional passive and active components, such as Resistors, capacitors, inductive components, integrated circuits and amplifiers. These components are arranged and connected to carry a variety of electrical functions for the printed circuit board 1320 including filtering, signal conditioning and voltage regulation. For descriptive purposes, the circuit board 1320 and those on the circuit board 1320 herein collectively referred to as "the controller" 1420. The controller 1420 receives signals from the sensors within the wall scanner, processes and processes the signals, and transmits processed and conditioned signals to the display 1260. The display 1260 receives the processed and conditioned signals and displays a detected characteristic of an object hidden behind a surface. The signal conditioning module 1425 As described below, provides signals to the material sensor 1325 and receives signals from it, the peak detection module 1430 As described below, it receives signals from the D-coil sensor 1330 and sends signals to it, and the analog-to-digital conversion module 1435 causes the conversion required for the control unit to interpret analog signals from the D-coil sensor 1330.

In some embodiments, a battery part controller (not shown) of the wall scanner controller 1420 may provide information related to the temperature or voltage level of the battery part. The Wallscanner control unit 1420 and the battery part control unit further includes under-voltage monitoring devices and charge state monitoring devices. The monitors are used by the Wallscanner controller 1420 or the battery pack control unit to determine if the battery pack 100 is in an undervoltage state, possibly the proper functioning of the wall scanner 1205 prevents or if the battery part 100 is in a state of charge through which the battery part 100 is susceptible to damage. If there is such an undervoltage condition or state of charge, the wall scanner becomes 1205 shut off, or otherwise prevents further power of the battery part 100 is discharged to prevent the battery part 100 is further emptied.

The wall scanner 1205 In operation, the presence of a post, such as a wooden post, or of metal girders in residential, commercial and industrial buildings using the material detector 1325 to capture. The posts of wood or metal beams may be caught when hidden behind surfaces such as gypsum, non-metallic wall materials, wood trim, wall panels and the like. The material detector 1325 includes a sensor circuit with a pair of sensors. Each sensor contains a coplanar primary plate 1440A where a one-sided coplanar plate 1440B is arranged between the primary plates. The presence and position of the post is then determined in a manner similar to that disclosed in US patent application Ser. US 2008/0 238 403 A1 entitled "STUD SENSOR", the entire contents of which are hereby incorporated by reference.

The wall scanner 1205 is further configured to operate in a metal detector mode. In metal detector mode, both ferrous and non-ferrous metals (eg, copper) can be detected in residential, commercial, and industrial buildings. In metal detector mode, the Wallscanner can 1205 Detecting metal (such as reinforcing bars, metal pipes, copper pipes, etc.) behind surfaces that consist of wall panels, tiles, plaster, bricks or the like. The wall scanner 1205 can also detect metal in walls made of concrete, masonry, wood, bricks or the like. In some embodiments, the wall scanner 1205 in function of metal to a depth of, for example, 6 inches (inch).

The in 39 D coil sensor 1330 shown uses an inductively coupled sensor including a transmitter coil and a receiver coil 1445A respectively. 1445B contains, which are D-shaped and overlap each other. When the D-coil sensor 1330 detects a metal object, the sensor gives 1330 a signal to the control unit 1420 off, which indicates the position of the object. The wall scanner 1205 detects the presence of metal in a manner similar to that disclosed in US Patent Application Publication No. Hei. US 2008/272 761 A1 entitled "DEVICE AND METHOD OF DETECTING FERRITE AND NON-FERRITE OBJECTS", the entire contents of which are hereby incorporated by reference.

The wall scanner 1205 is further configured to detect the presence of live (ie, live) wiring behind a surface. In some embodiments, the wall scanner includes 1205 an AC detection circuit, as described, for example, in US Pat. US Pat. No. 6,894,508 B2 entitled "AP-PARATUS AND METHOD FOR LOCATING OBJECTS BEHIND A WALL LINING", the entire contents of which are hereby incorporated by reference. In other embodiments, the wall scanner includes 1205 a removable contactless voltage detector (not shown), as described, for example, in co-pending U.S. Patent Application Serial No. 12 / 421,187 filed April 9 2009 entitled "SLIDABLY ATTACHABLE NON-CONTACT VOLTAGE DETECTOR ", the entire content of which has already been incorporated by reference, this detector being displaceable on the housing 1210 of the wall scanner 1205 can be attached. The wall scanner 1205 contains the LED 1365 indicating the detection of an AC voltage. The LED 1365 may be at a first end of the wall scanner 1205, such as the battery part 100 opposite end (as in 40 shown) on the display device 1260 or both. The wall scanner 1205 can function in the presence of AC voltages regardless of the function mode of the wall scanner 1205 (for example, the metal detector mode or the post detection mode), and the wall scanner 1205 need not be calibrated to detect the presence of AC voltages.

43 represents the operating section 1265 of the wall scanner 1205 The operating section 1265 is between the display device 1260 and the handle portion 1215 arranged along the first axis 1241. The operating section 1265 includes buttons, switches, or other actuators to control the function and operation of the wall scanner 1205 , In some embodiments, the control section includes 1265 a Metal Detector Mode Button 1500, a Post Detection Mode Button 1505 , a menu button 1510 , a power button 1515 and a calibration button 1520 , In other embodiments, the operating section includes 1265 additional buttons or switches for controlling additional or other features or functions of the wall scanner 1205 , One or more of the buttons in the operating section 1265 may include several functions, for example, with which an operating mode is selected and a user is enabled by menu options on the display device 1260 to scroll. In the illustrated embodiment of the operating section 1265 the buttons are arranged in a circle. In other embodiments, the buttons may be in the operating section 1265 be arranged in a variety of other forms, such as a grid or a field. In various embodiments of the operating section 1265 For example, the buttons are designed so that a user can access and select each button with one hand (for example, with the same hand with which the user holds the grip portion of the wall scanner).

The display device 1260 is symmetrical along the first axis 1241 Aligned by the handle section 1215 and the battery part 100 is formed. The display device 1260 is set up to display a variety of status information related to the function of the wall scanner 1205 Respectively. The display device 1260 can, for example, inter alia, the function mode of the wall scanner 1205 , the position of an object hidden behind the surface in real time, the depth of an object hidden behind the surface, it can indicate whether an object hidden behind the surface is iron or not, can indicate the voltage level of the battery part, and indicate whether Sound (ie acoustic indication) is switched on or off. 44-46 Embodiments of wall scanner status displays depict the display 1260 displays.

The control unit 1420 receives signals from the sensors, processes the signals or prepares them and transmits the conditioned signals to the display device 1260 as described above. The display device 1260 receives the conditioned signals and displays an image, a value (eg, a distance, coordinates, etc.), a detected object warning, test results, measurements, wall scanner properties, and so on. The display device 1260 contains enlightened symbols, such as white alphanumeric characters, on a black background. The display device 1260 Improves the visibility of the display device in poor or insufficient lighting, such as outdoors, in the dark or when dirty. Additionally or alternatively, the Wallscanner 1205 a remote indicator (not shown) attached to the wall scanner 1205 be attached or detached from it to the user a remote indication of the detection and / or position of a post or the function of the wall scanner 1205 to offer. The wall scanner 1205 may include a transmitter and a receiver for communicating with the remote display. In some embodiments, the remote display is arranged to display the same information as the display 1260. The user may access a menu (screen 1600 ) on the display 1260 by pressing buttons in the operating section 1265 activated. The menu will display a list of options regarding various wall scanner settings 1205 on the display device 1260 displayed. The user can choose between English and metric units to display the depth or position of an object (screen 1605 ) choose. The user can also choose whether sound is enabled (screen 1610 ). If sound is enabled, the Wallscanner generates 1205 for example, a beep or a series of beeps to indicate the presence or depth of an object hidden behind a surface. In other embodiments, additional functions such as brightness of the display screen, turning on and off of a backlight, controlling the function of a user can be added via the menu Remote display and adjust sensitivities of the wall scanner are controlled. The wall scanner 1205 is therefore a menu driven device.

The display device 1260 It also gives the user instructions for calibrating the wall scanner after powering up 1205 , If the wallscanner 1205 In the post detection mode, the user is prompted to select the wall scanner 1205 to apply to the surface to be tested and the calibration button 1520 to activate (screen 1615 ). The display device 1260 then indicates to the user that the Wallscanner 1205 calibrated (screen 1620 ). The user may, if desired, adjust the sensitivity (eg, scan depth) of the wall scanner 1205 change manually. For example, in one embodiment, a standard depth setting of 0.5 inches is for the wall scanner 1205 set when in the post detection mode. To change the scan depth, the user activates the calibration button 1520 while the wallscanner 1205 is calibrated. When the calibration button 1520 a second time, the scan depth is changed from 0.5 inches to 1.0 inches. When the calibration button 1520 For a third time, the scan depth changes from 1.0 inches to 1.5 inches. When the calibration button is activated a fourth time, the scan depth returns to 0.5 inches. In other embodiments, the wallscanner is 1205 configured with different scan depths and sensitivities. If an error occurs during calibration, the user will be prompted with an error message, such as the one in the screen 1625 shown, informed.

After calibration, the display shows 1260 on when the wallscanner 1205 looking for a post (screen 1630 ). The display device 1260 is configured to display the position of a detected post in real time when the wall scanner is in use 1205 is led over the post. If, for example, the Wallscanner 1205 is moved from left to right over a surface and a post is detected, the post by a partially illuminated portion of the display device 1260 (for example, the post is represented by a combination of illuminated pixels and non-illuminated pixels). The illuminated pixels form a variety of lines, such as horizontal lines, vertical lines, diagonal lines, or any combination thereof that are separated by unilluminated pixels or lines. The display device 1260 further includes an optical and / or linguistic marking of the edge of the post (for example, an arrow and / or the word "edge", which is displayed on the display device of the wall scanner), as in screen 1635 is shown. The display device 1260 may also indicate both edges of a post if the width of the post is not greater than the width of the display 1260 , In this case, each edge is identified by an arrow and / or a linguistic marking, and the post is represented by a combination of illuminated and non-illuminated sections (screen 1640 ). The wall scanner 1205 contains the same visual representations of the position of a post in real time when the wall scanner is moved from right to left (screen 1645 ).

If the wallscanner 1205 In the Metal Detector mode, the user is prompted to select the Wallscanner 1205 away from the surface to be examined so that the wall scanner 1205 is properly calibrated (screen 1650 ). Similar to the Post detection mode, the Wallscanner generates 1205 an indication on the display device that the Wallscanner 1205 calibrated (screen 1655 ). If an error occurs during calibration, the user will be prompted with an error message such as the one shown in the screen 1660 shown, informed. After calibration, the display shows 1260 on when the wall scanner 1250 searches for metal (screen 1665 ). If the wallscanner 1205 detects the presence of metal, the user is visually or acoustically informed that metal has been detected (screen 1670 ). The display device 1260 then indicates to the user if the detected metal is iron or not, displays a numerical indication of the depth of the detected object and visually indicates the depth of the object (screen 1675 ). In some embodiments of the invention, the display device 1260 also create an icon that indicates the shortest distance to a detected metal object (screen 1680 ).

A process 1700 for the general operation of the wall scanner 1205 is in 47 shown. If the wallscanner 1205 is turned on (step 1705 ), is the standard detection mode of the Wallscanner 1205 the metal detector mode. To insert the wall scanner in metal detector mode, the user activates the calibration button 1520 via operating section 1265 (step 1710 ). If the wallscanner 1205 has been successfully calibrated (step 1715) is the Wallscanner 1205 ready to capture metal objects hidden behind a surface (step 1720 ). If the wallscanner 1205 is not calibrated properly, a calibration error will be displayed (step 1725 ), and the Wallscanner 1205 waits for a user acquisition mode to change or the calibration button to be changed 1520 reactivated (step 1730). In some embodiments, the wall scanner becomes 1205 calibrated automatically when a user selects the Post detection mode (step 1735 ). In other embodiments, the user must press the calibration button 1520 activate. If the calibration is successful (step 1740 ), is the Wallscanner 1205 ready to pick up posts hidden behind a surface (step 1745 ). If calibration is unsuccessful, a calibration error will be displayed (step 1725 ), and the Wallscanner 1205 waits for the User Acquisition Modes to change or the Calibration Button to be updated 1520 reactivated (step 1730 ). After the steps 1720 and 1745 the wallscanner waits 1205 Also, the user changes capture modes or the wall scanner 1205 recalibrated (step 1730 ). Alternatively, the user may choose the menu button 1510 via the operating section 1265 activate (step 1750 ) to set wall scanner tools (step 1755 ), such as selecting display units and turning sound on or off. To exit the tool setting, the user activates the menu button 1510 a second time (step 1760 ).

Thus, the invention provides, inter alia, a measuring clamp, which is set up for receiving a removable and rechargeable battery part. The gauge includes a main body having a first axis, a handle, a clamp, a trigger, and a display. The handle has a second axis and includes a first recess adapted to receive the battery pack. The second axis forms an oblique angle with the first axis, and the battery part is inserted along the second axis in the first recess. The forceps is coupled to the main body, aligned with the first axis, and is operable to measure an electrical property of a conductor based on an induced current. Various features and advantages of the invention are set forth in the following claims.

Claims (20)

Clamp set up to receive a removable and rechargeable battery pack, the clamp includes: a main body having a first axis; a handle having a second axis that includes a first recess configured to receive the battery pack, the first cavity including first and second electrical terminals that are exposed when the battery pack is not inserted into the first cavity . wherein the second axis forms an oblique angle with the first axis, and the battery part is inserted along the second axis into the first recess; a pair of pliers connected to the main body and aligned with the first axis, the pliers operable to measure an electrical property of a conductor based on an induced current; a trigger that, in use, selectively opens and closes the forceps; and a display device configured to display an indication of the electrical characteristic and attached along the first axis to a rear portion of the main body. Measuring pliers to Claim 1 further comprising a non-contact voltage detector. Measuring pliers to Claim 2 further comprising a voltage sensing display. Measuring pliers to Claim 1 which further includes an LED flashlight. Measuring pliers to Claim 4 In operation, the LED flashlight may, in use, illuminate a first area enclosed by the forceps. Measuring pliers to Claim 1 further comprising a pair of electrical leads operable to receive a pair of electrical probes. Measuring pliers to Claim 1 wherein the battery part is a lithium ion battery part. Measuring pliers to Claim 1 with the trigger positioned below the main body. A method of operating a forceps that includes a main body, a handle, a pair of pliers, and a pair of electrical leads, the method comprising: Feeding the clamp with a removable battery pack inserted into a recess of the handle, the battery pack being inserted along a first axis; Detecting a first electrical property based on an induced current using the forceps, the pliers being aligned along a second axis, and the first axis and the second axis form an oblique angle; Measuring a second electrical characteristic based on signals received over the pair of electrical leads, the pair of electrical leads operable to receive a pair of electrical probes; and Displaying an indication of the first electrical characteristic and the second electrical characteristic on a display device, wherein the display is attached to a rear portion of the main body along the second axis. Method according to Claim 9 wherein the battery part is a lithium ion battery part. Method according to Claim 9 further comprising illuminating a region enclosed by the forceps using a flashlight powered by the battery part. Method according to Claim 9 further comprising detecting a voltage using a non-contact voltage detector. Method according to Claim 12 further comprising activating a voltage sensing indication when the voltage is detected. A test and measurement device adapted to receive a removable and rechargeable battery part, the device comprising: a main body having a first axis; a handle with a second axis; and a first recess and a second recess, the first recess including an engagement surface for receiving a first device along the second axis that can provide power to the test and measurement device, and the second recess is configured to receiving a second device which in function enables functional control for the test and measurement device; the handle being offset from the main body of the test and measurement device, and the handle is attached to a lower portion of the main body along the second axis so that the handle forms an oblique angle with respect to the first axis. Test-and-measuring device according to Claim 14 , wherein the test-and-measuring device is a measuring clamp. Test-and-measuring device according to Claim 14 wherein the first device is a lithium ion battery part. Test-and-measuring device according to Claim 14 , wherein the second device is a trigger. Test-and-measuring device according to Claim 14 , which further comprises a display device. Test-and-measuring device according to Claim 14 which further includes an LED flashlight. Test-and-measuring device according to Claim 14 further comprising at least first and second electrical terminals exposed when the first device is not inserted into the first recess.

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