CN107907144A - A kind of deviational survey automatic calibration of sensor equipment - Google Patents

Abstract

The invention discloses a kind of deviational survey automatic calibration of sensor equipment, including rack, calibration clamp, deviational survey sensor, high precision dip sensor, data transfer equipment, electric cabinet, industrial personal computer and tumbler；The calibration clamp is equipped with top panel, side plate, limiting plate and pressing plate, and the side plate is fixedly connected with top panel, and the limiting plate is fixed in groove with side plate formed with several grooves, several described deviational survey sensors by pressing plate；The tumbler includes horizontally disposed stepper motor and drive shaft, the drive shaft is connected by the shaft of high-precision gear reducer and stepper motor, the calibration clamp both ends are fixedly mounted on the driving shaft, the obliquity sensor is fixedly mounted on top panel upper surface, several described deviational survey sensors and obliquity sensor are connected by data cable with data transfer equipment, the industrial personal computer and data transfer equipment data connection, the industrial personal computer and stepper motor are electrically connected electric cabinet.

Description

An automatic calibration device for an inclinometer sensor

technical field

The invention relates to the technical field of a novel automatic instrument, in particular to an automatic calibration device for an inclinometer sensor.

Background technique

Inclinometers are used in in-situ monitoring of geotechnical engineering, especially in deep lateral displacement monitoring of slopes, roadbeds, soil dams and underground caverns. As the core component of the inclinometer, the inclinometer sensor has very high quality requirements. But at present, the calibration and inspection of the inclinometer sensor can only be done manually, which is cumbersome to operate, with large errors and low efficiency. In addition, there are problems in the existing technology that the calibration inspection requires multi-person collaboration, difficult data reading, and complex data calculation. Therefore, it is necessary to develop an automatic calibration device for inclinometer sensors.

Contents of the invention

The above technical problems are not solved: the present invention provides an automatic calibration device for inclinometer sensors that can simultaneously complete the calibration and inspection work of multiple inclinometer sensors in one clamping.

In order to achieve the above-mentioned technical effect, the technical scheme adopted in the present invention is:

An automatic calibration device for an inclinometer sensor, characterized in that it includes a frame, a calibration jig, an inclinometer sensor, a high-precision inclination sensor, a data forwarding device, an electric control box, an industrial computer and a rotating device; the calibration jig is provided with An upper panel, a side plate, a limiting plate and a pressure plate, the side plate and the upper panel are fixedly connected to form an inverted L-shaped structure, the limiting plate is located in front of the side plate, the pressing plate is located in front of the limiting plate, and the limiting plate There are several grooves matching the size of the inclinometer sensors formed on the side plate, and several inclinometer sensors are fixed in the grooves through the pressure plate; the two ends of the rotating device are respectively installed on the left and right ends of the frame, The rotating device includes a horizontally arranged stepping motor and a driving shaft, the driving shaft is connected to the rotating shaft of the stepping motor through a high-precision reducer, the two ends of the calibration fixture are fixedly installed on the driving shaft, the upper panel of the calibration fixture and The side plates are all parallel to the drive shaft, the inclination sensor is fixedly installed on the upper surface of the upper panel, the data forwarding device is located behind the upper panel, the data forwarding device is provided with an environmental sensor, and several of the inclinometer sensors and inclination sensors pass through The data line is connected to the data forwarding device, the industrial computer is connected to the data forwarding device, the industrial computer and the stepper motor are respectively electrically connected to the electric control box, and the industrial computer is used to receive, store and process the data information transmitted by the data forwarding device , and control the work of the stepper motor through the electric control box.

Further, a printer is also included, the printer is electrically connected to the electric control box, and data is connected to the industrial computer.

Further, the electric control box, industrial computer and printer are all located outside the frame, the electric control box is fixedly connected to the right side wall of the frame, and the industrial computer and printer are fixedly installed above the electric control box.

Further, the data forwarding device is fixedly connected to the upper panel through screws.

Further, T-shaped blocks are fixedly installed at both ends of the upper panel, and the calibration fixture is fixedly connected with the drive shaft through the T-shaped blocks.

Further, the pressing plate is provided with a fixed end and a pressing end, the fixed end is located outside the groove and is perpendicular to the side plate, the fixed end is fixedly connected with the limiting plate and the side plate through screws or screws, the The pressing end is connected to the middle part of the fixed end, the pressing end is located directly in front of the groove, and the pressing end is used for pressing and fixing the inclinometer sensor in the groove.

Further, the pressing end is hinged to the middle of the fixed end through a hinge shaft, and a torsion spring is threaded on the hinge shaft.

Further, several grooves are arranged side by side in the transverse direction.

Compared with the prior art, the beneficial effect of the present invention is: by installing the calibration jig on the drive shaft of the rotating device, an inclination sensor is arranged on the upper panel of the calibration jig, and a data forwarding device with an environmental sensor is arranged behind the upper panel. The inclinometer sensor is installed in the multiple grooves formed by the plate and the limit plate, the inclinometer sensor and the inclination sensor are connected to the data forwarding device through the data line, the data of the industrial computer is connected to the data forwarding device, and the industrial computer controls the stepping motor through the electric control box work, so that the present invention can complete the automatic calibration and inspection work of multiple inclinometer sensors in one clamping, which reduces the error and ensures the quality of the inclinometer sensors. Problems such as difficult reading and complex data calculation have improved the efficiency of the test.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following preferred embodiments will be described in detail in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a structural diagram of an automatic calibration device for an inclinometer sensor of the present invention.

Fig. 2 is a partially enlarged view of the present invention at the groove and the pressing plate.

The names corresponding to the labels in the figure are:

1. Rack; 2. Stepping motor; 3. Reducer; 4. Side plate;

5. Pressure plate; 6. Limit plate; 7. Inclination sensor; 8. Data forwarding equipment;

9. Electric control box; 10. Industrial computer; 11. Environmental sensor; 12. Inclinometer sensor;

13. Printer; 51. Fixed end; 52. Compression end; 53. Articulated shaft.

Detailed ways

As shown in Figures 1 and 2, an automatic calibration device for an inclinometer sensor includes a frame 1, a calibration fixture, an inclinometer sensor 12, a high-precision inclination sensor 7, a data forwarding device 8, an electric control box 9, and an industrial computer 10. Printer 13 and rotating device. The calibration fixture is provided with an upper panel, a side plate 4, a limit plate 6 and a pressure plate 5. The side plate 4 and the upper panel are fixedly connected to form an inverted L-shaped structure. The limit plate 6 is located in front of the side plate 4, and the pressure plate 5 is located on the limit plate. 6 front, the limit plate 6 and the side plate 4 are formed with a number of grooves arranged side by side that match the size of the inclinometer sensor 12. The pressure plate 5 is provided with a fixed end 51 and a pressing end 52, the fixed end 51 is located outside the groove, and is perpendicular to the side plate 4, the fixed end 51 is fixedly connected with the limiting plate 6 and the side plate 4 by screws or screws, pressing The tight end 52 is hinged to the middle of the fixed end 51 through a hinge shaft 53 , and a torsion spring (not shown in the figure) is threaded on the hinge shaft 53 . The pressing end 52 is located directly in front of the groove, and the pressing end 52 presses and fixes the inclinometer sensor 12 in the groove through a torsion spring. The two ends of the rotating device are installed on the left and right ends of the frame 1 respectively. The rotating device includes a stepping motor 2 and a drive shaft arranged horizontally. The driving shaft is connected with the rotating shaft of the stepping motor 2 through a high-precision reducer 3 . T-shaped blocks are fixedly installed at both ends of the upper panel, and the calibration jig is fixedly connected with the drive shaft through the T-shaped block, and the upper panel and the side plate 4 of the calibration jig are parallel to the drive shaft. The inclination sensor 7 is fixedly installed on the upper surface of the upper panel, the data forwarding device 8 is located behind the upper panel, and is fixedly connected with the upper panel by screws, and the data forwarding device 8 is equipped with an environmental sensor 11 . The electric control box 9, the industrial computer 10 and the printer 13 are all located on the outside of the frame 1, the electric control box 9 is fixedly connected to the right side wall of the frame 1, and the industrial computer 10 and the printer 13 are fixedly installed on the top of the electric control box 9. Several inclinometer sensors 12 and inclination sensors 7 are all connected to the data forwarding device 8 through data lines, and the data forwarding device 8 and the printer 13 are respectively connected to the data of the industrial computer 10, and the industrial computer 10, the printer 13 and the stepping motor are respectively electrically connected to the power supply. control box9. The industrial computer 10 is used to receive, store and process the data information transmitted by the data forwarding device 8 , and control the operation of the stepper motor 2 through the electric control box 9 .

Calibration process of the present invention:

Open the pressing end of the pressure plate 5 of the calibration fixture, put the inclinometer sensor 12 into the groove formed by the limit plate 6 and the side plate 4, and after confirming that the bottom of the sensor is close to the surface of the side plate 4, loosen the pressing end , so that the inclinometer sensor 12 is fixed in the calibration fixture by the pressing plate 5 . Connect the connection line of inclinometer sensor 12 and data forwarding device 8. On the screen of the industrial computer 10, select the range, classification, and accuracy level, and then click the start button. The industrial computer 10 obtains current environmental data such as temperature, humidity, and atmospheric pressure through the environmental sensor 11 .

Temperature calibration: the industrial computer 10 sends the ambient temperature data acquired by the previous part to the inclinometer sensor 12 of each station through the data forwarding device 8, and performs temperature calibration on the inclinometer sensor 12, and the inclinometer sensor 12 transmits the data after receiving the data The device 8 returns the calibrated temperature data to the industrial computer 10, so as to check whether the temperature calibration of the inclinometer sensors 12 of each station is successful. Accurately return the inclination angle to zero: the industrial computer 10 reads the angle value of the high-precision inclination sensor 7 to judge whether the current inclination angle is 0 degrees, if the inclination angle is not 0 degrees, the industrial computer 10 controls the stepping motor 2 to rotate through the electric control box 9, The stepping motor 2 is precisely rotated to an inclination angle of 0 degrees through a high-precision reducer 3 .

Angle calibration: the industrial computer 10 controls the rotation of the stepping motor 2 through the electric control box 9, and the stepping motor 2 precisely rotates to the preset calibration angle position through the high-precision reducer 3, and the industrial computer 10 uses the data forwarding device 8-way inclinometer sensor 12 sends a calibration instruction, and the inclinometer sensor 12 performs automatic calibration. After the calibration, the inclinometer sensor 12 returns the calibration value to the industrial computer 10 through the data forwarding device 8 .

Inspection: The industrial computer 10 calculates all the target angular positions that need to be inspected according to the previously set range and classification. The industrial computer 10 controls the rotation of the stepping motor 2 through the electric control box 9, and the stepping motor 2 rotates accurately through the high-precision reducer 3 in sequence. For each target angle position, the industrial computer 10 sequentially reads and records the inclination value corresponding to the high-precision inclination sensor 7 at each target angle, and the industrial computer 10 sequentially reads and records the inclination sensor 12 at each target angle through the data forwarding device 8 output value. The computer of the industrial computer 10 sends pulses to the stepping motor 2, and the stepping motor 2 turns to the loading and unloading position through the high-precision reducer 3.

The industrial computer 10 calculates the error of each inclinometer sensor 12 according to the above data, and if the error exceeds the set allowable error, it is judged as a substandard product. The industrial computer 10 generates a product serial number, and then writes the product serial number into the qualified inclinometer sensor 12 . The industrial computer 10 sends information such as the serial number, calibration and inspection date, environmental parameters, and detailed inspection data of the qualified inclinometer sensor 12 to the product data server for storage. The printer 13 prints product qualified labels, qualified certificates and unqualified labels, sticks the printed labels on the inclinometer sensor 12 in sequence according to the station order, unloads the product, and completes the calibration and inspection work.

The invention can simultaneously calibrate and inspect a batch of inclinometer sensors at one time, and the calibration inspection process is all intelligently controlled by a computer, which improves the efficiency and accuracy of calibration inspection, and at the same time information such as calibration data and calibration environment data of the inclinometer sensors are stored in the product The data is stored in the background server, which is convenient for querying and recalling product information at any time, and realizes intelligence and informatization.

The present invention is not limited to the above-mentioned specific implementation manners, and various transformations made by those skilled in the art starting from the above-mentioned ideas without creative work all fall within the protection scope of the present invention.

Claims (8)

1. An automatic calibration device for an inclinometer sensor, characterized in that: comprise a frame, a calibration fixture, an inclinometer sensor, a high-precision inclination sensor, a data forwarding device, an electric control box, an industrial computer and a rotating device; the calibration fixture An upper panel, a side panel, a limiting plate and a pressure plate are provided, and the side panel and the upper panel are fixedly connected to form an inverted L-shaped structure. The limiting plate is located in front of the side panel, and the pressing plate is located in front of the limiting plate. The position plate and the side plate are formed with several grooves matching the size of the inclinometer sensors, and several of the inclinometer sensors are fixed in the grooves through the pressure plate; the two ends of the rotating device are respectively installed on the left and right sides of the frame. At the end, the rotating device includes a stepping motor and a drive shaft arranged horizontally. The drive shaft is connected to the rotating shaft of the stepping motor through a high-precision reducer. Both ends of the calibration jig are fixedly installed on the drive shaft. Both the panel and the side plate are parallel to the drive shaft, the inclination sensor is fixedly installed on the upper surface of the upper panel, the data forwarding device is located behind the upper panel, the data forwarding device is provided with an environmental sensor, several inclinometer sensors and inclination sensors Both are connected to the data forwarding equipment through data lines, the industrial computer is connected to the data forwarding equipment, the industrial computer and the stepper motor are respectively electrically connected to the electric control box, and the industrial computer is used to receive, store and process the data transmitted by the data forwarding equipment. Data information, and control the work of the stepping motor through the electric control box. 2 . The automatic calibration device for inclinometer sensors according to claim 1 , further comprising a printer, the printer is electrically connected to the electric control box, and the data is connected to the industrial computer. 3 . 3. A kind of inclinometer sensor automatic calibration equipment as claimed in claim 2, is characterized in that: described electric control box, industrial computer and printer are all positioned at the outside of frame, and electric control box is fixedly connected with frame right side wall , the industrial computer and the printer are fixedly installed above the electric control box. 4. An automatic calibration device for an inclinometer sensor according to claim 1, wherein the data forwarding device is fixedly connected to the upper panel by screws. 5 . The automatic calibration device for inclinometer sensors according to claim 1 , wherein T-shaped blocks are fixedly installed at both ends of the upper panel, and the calibration fixture is fixedly connected to the drive shaft through the T-shaped blocks. 6 . 6. An automatic calibration device for an inclinometer sensor according to claim 1, wherein the pressing plate is provided with a fixed end and a pressing end, and the fixed end is located outside the groove and is perpendicular to the side plate , the fixed end is fixedly connected to the limit plate and the side plate through screws or screws, the pressing end is connected to the middle of the fixed end, the pressing end is located directly in front of the groove, and the pressing end is used to press and fix the inclinometer sensor on the inside the groove. 7 . The automatic calibration device for an inclinometer sensor according to claim 6 , wherein the pressing end is hinged to the middle of the fixed end through a hinge shaft, and a torsion spring is threaded on the hinge shaft. 8 . 8. An automatic calibration device for an inclinometer sensor according to any one of claims 1-7, characterized in that: several of the grooves are arranged side by side laterally.