TWI442059B - Clamp meter for measuring in multipoint - Google Patents

Description

Multi-point measurement

The invention relates to a kind of hook, in particular to a multi-point measurement hook.

Like a multimeter, a clamp meter is a commonly used electronic measuring device; a hook gauge can measure the current in a conductor (such as a wire) without electrical contact. After the checklist is created, the checklist will perform error correction, which will more accurately measure and display the current in the conductor.

However, there is a shortcoming in the current hook list, that is, when the user uses the hook to measure the current in the conductor, the conductor must be placed in the center of the hook of the hook (because only the hook is in the center of the hook) Error correction); otherwise the current in the conductor will not be accurately measured and displayed; this is very inconvenient.

In order to improve the above disadvantages of the prior art, it is an object of the present invention to provide a multi-point measurement hook.

In order to achieve the above object of the present invention, the multi-point measurement hook of the present invention includes a current measuring unit. The current measuring unit includes a plurality of corrected current measuring positions.

10‧‧‧Multi-point measurement

102‧‧‧current measuring unit

104‧‧‧ analog digital conversion unit

110‧‧‧Display unit

112‧‧‧Measurement position determination unit

114‧‧‧Measurement position setting circuit

122‧‧‧Measurement position detection circuit

124‧‧‧ Current sensor

126‧‧‧Measurement ontology

128‧‧‧Hook

130‧‧‧Upper recess

132‧‧‧ lower end recess

20‧‧‧First wire

22‧‧‧second wire

The first figure is a block diagram of an embodiment of a multi-point measurement hook of the present invention.

The second figure is a block diagram of another embodiment of the multi-point measurement hook of the present invention.

The third figure is a schematic view of an embodiment of a multi-point measurement hook of the present invention.

The fourth figure is a schematic view of another embodiment of the multi-point measurement hook of the present invention.

Please refer to the first figure, which is a block diagram of an embodiment of the multi-point measurement hook of the present invention. The multi-point measurement hook table 10 of the present invention comprises a current measuring unit 102, an analog-digital converting unit 104, a display unit 110 and a measuring position determining unit 112; the measuring position determining unit 112 includes an amount The position setting circuit 114 is measured.

The analog-to-digital conversion unit 104 is electrically connected to the current measurement unit 102 and the display unit 110; the measurement position determination unit 112 is electrically connected to the current measurement unit 102; the measurement position setting circuit 114 is electrically connected To the current measuring unit 102.

Please refer to the third figure, which is a schematic diagram of an embodiment of a multi-point measurement hook of the present invention. The multi-point measurement hook 10 further includes a measuring body 126 and a hook portion 128.

The measuring unit 126 is configured to cover the analog-to-digital conversion unit 104. The hook portion 128 is disposed at one end of the measuring body 126. The hook portion 128 includes an upper end recess 130 disposed at an upper end of the hook portion 128. .

Please refer to the fourth figure, which is a schematic diagram of another embodiment of the multi-point measurement hook of the present invention. The fourth figure is similar to the third figure; the fourth figure differs from the third figure in that the upper end recess 130 is replaced by a lower end recess 132 (provided at the lower end of the hook portion 128).

The current measuring unit 102 includes a plurality of current measuring positions corrected according to the measuring position determining unit 112 (the measuring position setting circuit 114); that is, the multi-point measuring hook 10 is prepared. After that, the multi-point measurement hook 10 will be based on The same current measurement position (for example, the center of the hook portion 128, the upper end concave portion 130 or the lower end concave portion 132) performs error correction, and the measurement position determining unit 112 (the measurement position setting circuit 114) is used to set (Selecting) the current measurement position of the current measuring unit 102.

The current measuring unit 102 measures the current according to the current measurement position determined (selected and set) by the measurement position determining unit 112 (the measurement position setting circuit 114).

The measurement position determining unit 112 (the measurement position setting circuit 114) may be a switch circuit, a button circuit or a knob circuit; the analog digital conversion unit 104 may be a fast high-resolution analog digital converter; the display Unit 110 can be a display.

Please refer to the second figure, which is a block diagram of another embodiment of the multi-point measurement hook of the present invention. The multi-point measurement hook table 10 of the present invention comprises a current measuring unit 102, an analog-digital converting unit 104, a display unit 110 and a measuring position determining unit 112; the measuring position determining unit 112 includes an amount The position detecting circuit 122 is measured; the measuring position detecting circuit 122 includes a plurality of current sensors 124.

The analog-to-digital conversion unit 104 is electrically connected to the current measuring unit 102 and the display unit 110; the measuring position determining unit 112 is electrically connected to the current measuring unit 102; the measuring position detecting circuit 122 is electrically The current measuring unit 102 is electrically connected to the current measuring unit 102.

Please refer to the third figure, which is a schematic diagram of an embodiment of a multi-point measurement hook of the present invention. The multi-point measurement hook 10 further includes a measuring body 126 and a hook portion 128.

The measuring body 126 is configured to cover the analog digital conversion unit 104; the hook portion 128 The hook portion 128 includes an upper end recess 130 disposed at an upper end of the hook portion 128.

Please refer to the fourth figure, which is a schematic diagram of another embodiment of the multi-point measurement hook of the present invention. The fourth figure is similar to the third figure; the fourth figure differs from the third figure in that the upper end recess 130 is replaced by a lower end recess 132 (provided at the lower end of the hook portion 128).

The current measuring unit 102 includes a plurality of current measuring positions corrected by the measuring position determining unit 112 (the measuring position detecting circuit 122); that is, the multi-point measuring hook 10 is produced. After that, the multi-point measurement hook table 10 performs error correction according to different current measurement positions (for example, the center of the hook portion 128, the upper end concave portion 130 or the lower end concave portion 132), and the measurement position is determined. The unit 112 (the measurement position detecting circuit 122) is configured to detect and set (select) the current measuring position of the current measuring unit 102.

The current measuring unit 102 measures the current according to the current measuring position determined by the measuring position determining unit 112 (the detecting position detecting circuit 122).

The analog-to-digital conversion unit 104 can be a fast high-resolution analog digital converter; the display unit 110 can be a display.

Please refer to the third diagram and the fourth diagram. The application of the multi-point measurement hook of the present invention measures the first conductor 20 having a smaller current in the upper end recess 130 or the lower end recess 132 (wire diameter) Smaller, as shown in the third figure, whereby the first wire 20 can be more accurately measured in the correct position (the center, ie, the center of the upper end recess 130 or the center of the lower end recess); the present invention The application of the multi-point measurement hook is in the hook The portion 128 is centrally measuring one of the second wires 22 having a larger current (the wire diameter is larger, as shown in the fourth figure).

At present, there is a disadvantage in the conventional hook list, that is, when the user uses the hook to measure the current in the conductor, the conductor must be placed in the center of the hook of the hook, otherwise the current in the conductor will not be accurately measured. And display. The multi-point measurement hook of the present invention does not have this disadvantage; the measurement position can be set to the center of the hook, the upper end of the hook or the lower end of the hook (or even any position), or automatic detection The position of the conductor determines the position of the measurement, and the current in the conductor is accurately measured and displayed. In another embodiment, the multi-point measurement hook of the present invention can measure the corrected current measurement position of the complex number for output or display.

In summary, it is known that the present invention has industrial applicability, novelty and advancement, and the structure of the present invention has not been seen in similar products and public use, and fully complies with the requirements of the invention patent application, and is filed according to the patent law.

10‧‧‧Multi-point measurement

102‧‧‧current measuring unit

104‧‧‧ analog digital conversion unit

110‧‧‧Display unit

112‧‧‧Measurement position determination unit

114‧‧‧Measurement position setting circuit

Claims (9)

A multi-point measurement hook table comprising: a current measuring unit; and a measuring position determining unit electrically connected to the current measuring unit, wherein the current measuring unit comprises a plurality of corrected current measuring units a position; wherein the current measuring unit includes a plurality of current measuring positions corrected according to the measuring position determining unit, and the current measuring unit measures the current according to the current measuring position determined by the measuring position determining unit. The multi-point measurement hook table described in claim 1, wherein the measurement position determining unit includes a measurement position setting circuit electrically connected to the current measuring unit; wherein the current measuring unit The current measurement position corrected by the measurement position setting circuit is included in the plurality, and the current measurement unit measures the current according to the current measurement position set by the measurement position setting circuit. The multi-point measurement hook table described in claim 1 , wherein the measurement position determining unit includes a measurement position detecting circuit electrically connected to the current measuring unit; wherein the current measurement The unit includes a plurality of current measurement positions corrected by the measurement position detecting circuit, and the current measuring unit measures the current according to the current measurement position detected by the measurement position detecting circuit. The multi-point measurement hook table described in claim 3, wherein the measurement position detecting circuit comprises a plurality of current sensors electrically connected to the current measuring unit. For example, the multi-point measurement checklist described in item 2 of the patent application scope includes: An analog-to-digital conversion unit is electrically connected to the current measuring unit; and a display unit is electrically connected to the analog digital conversion unit. For example, the multi-point measurement hook table described in claim 5, wherein the measurement position setting circuit is a switch circuit, a button circuit or a knob circuit, thereby setting the current amount of the current measuring unit. Measuring position; the analog digital conversion unit is a fast high-resolution analog digital converter; the display unit is a display. The multi-point measurement hook table described in claim 6 further includes: a measuring body covering the analog digital conversion unit; and a hook portion disposed at one end of the measuring body. The hook of the multi-point measurement described in claim 7 wherein the hook portion includes an upper end recess and is disposed at an upper end of the hook portion. The multi-point measurement hook table described in claim 7 is characterized in that the hook portion includes a lower end recess portion and is disposed at a lower end of the hook portion.