Wiring board loop resistance testing device

Abstract

The invention discloses a wiring board loop resistance testing device. The testing device comprises a loop resistance tester, a connecting wire group and a jointing clamp module, the loop resistance tester is electrically connected with the jointing clamp module through the connecting wire group; the jointing clamp module is used for clamping a wiring board, detecting a pressure value applied by the jointing clamp module in real time, and transmitting the pressure value to the loop resistance tester; the loop resistance detector is used for comparing the pressure value with a preset pressure value and sending a tightening signal to the jointing clamp module according to a comparison result; the jointing clamp module is used for receiving the tightening signal and performing tightening processing according to the tightening signal, so that the pressure value is equal to a preset pressure value; and the loop resistance detector is also used for detecting the loop resistance of the wiring board when the pressure value is equal to the preset pressure value. According to the invention, the clamping force of the jointing clamp module on the wiring board during each measurement is ensured to be the same, and the measurement error is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of loop resistance testing, and in particular to a wiring board loop resistance testing device. Background Art

[0002] Heating of the terminal board in the substation is a common defect, and maintenance personnel need to measure the loop resistance of the terminal board before and after processing.

[0003] In the prior art, loop resistance testers mostly use a four-wire system for wiring measurement. At the same time, two voltage clamps and two current clamps need to be led out of the instrument and clamped on the terminal board. However, the space left after the two terminal boards are bolted is limited, which is not convenient for wiring and easily causes measurement errors. Summary of the invention

[0004] The invention provides a wiring board loop resistance testing device to ensure that the clamping force of a wiring clamp module on the wiring board is the same during each measurement, thereby reducing measurement errors.

[0005] According to one aspect of the present invention, a wiring board loop resistance testing device is provided, the wiring board loop resistance testing device comprising:

[0006] Loop resistance tester, connecting wire set and terminal clamp module;

[0007] The loop resistance tester is electrically connected to the wiring clamp module via a connecting wire set;

[0008] The wiring clamp module is used to clamp the wiring board, and detect the pressure value applied by the wiring clamp module in real time, and transmit the pressure value to the loop resistance tester;

[0009] The loop resistance detector is used to compare the pressure value with the preset pressure value and send a tightening signal to the wiring clamp module according to the comparison result;

[0010] The wiring clamp module is used to receive a tightening signal and perform tightening processing according to the tightening signal so that the pressure value is equal to a preset pressure value;

[0011] The loop resistance detector is also used to detect the loop resistance of the wiring board when the pressure value is equal to the preset pressure value.

[0012] Further, the terminal clamp module includes:

[0013] Wiring clamps and pressure detection modules;

[0014] The pressure detection module is connected to the loop resistance tester through a connecting wire set; the pressure detection module is used to detect the pressure value applied by the wiring clamp in real time, and transmit the pressure value to the loop resistance tester;

[0015] The wiring clamp is connected to a loop resistance tester through a connecting wire group. The loop resistance tester is used to compare the pressure value with a preset pressure value and send a tightening signal to the wiring clamp according to the comparison result to test the loop resistance of the wiring board.

[0016] Further, the wiring clamp includes a fixed pressing portion and a movable pressing portion;

[0017] The fixed pressing portion includes two first contacts, a first contact fixing portion and a fixed connecting portion, the two first contacts are arranged on a first contact surface of the first contact fixing portion, a first end of the first contact fixing portion is connected to a first end of the fixed connecting portion, and the first contact fixing portion and the fixed connecting portion are perpendicular to each other;

[0018] The movable pressing part includes two second contacts, a pressing bottom and a second contact fixing part, the pressing bottom and the fixed connection part are slidably arranged, and the second contact fixing part is arranged on a surface of the pressing bottom close to the first contact fixing part; the two second contacts are arranged on a second contact surface of the second contact fixing part close to the first contact surface, and the two second contacts are arranged one-to-one correspondingly with the two first contacts;

[0019] The loop resistance tester is electrically connected to the fixed pressing part and the movable pressing part of the wiring clamp module through a connecting wire group; the loop resistance detector is used to compare the pressure value with the preset pressure value, and send a tightening signal to the movable pressing part according to the comparison result;

[0020] The mobile clamping part is used to receive a clamping signal and perform a clamping process according to the clamping signal so that the pressure value is equal to a preset pressure value.

[0021] Furthermore, the loop resistance tester is used to:

[0022] The pressure value is compared with the preset pressure value, and a tightening signal is sent to the terminal clamp module according to the comparison result and the proportional-integral-differential control method.

[0023] Further, the loop resistance detector comprises:

[0024] Pressure fine adjustment module and resistance detection module;

[0025] The first end of the pressure fine adjustment module is electrically connected to the pressure detection module through a connecting wire group; the pressure fine adjustment module is used to receive the pressure value detected in real time by the pressure detection module, compare the pressure value with the preset pressure value, and send a tightening signal to the wiring clamp according to the comparison result;

[0026] The second end of the pressure fine-tuning module is connected to the first end of the resistance detection module, and the second end of the resistance detection module is electrically connected to the second end of the wiring clamp through a connecting wire group. The pressure fine-tuning module is also used to send a detection signal to the resistance detection module when the pressure value is equal to a preset pressure value, so as to detect the loop resistance of the wiring board through the resistance detection module.

[0027] Further, the connection line group includes a first voltage connection line, a second voltage connection line, a first current connection line, a second voltage connection line, a detection connection line and a control connection line;

[0028] The first voltage connection terminal of the loop resistance tester is connected to one of the first contacts through a first voltage connection line, and the second voltage connection terminal of the loop resistance tester is connected to another first contact through a second voltage connection line; the first current connection terminal of the loop resistance tester is connected to one of the second contacts through a first current connection line, and the second current connection terminal of the loop resistance tester is connected to another second contact through a second current connection line;

[0029] The detection end of the loop resistance tester is connected to the pressure detection module through a detection connection line; the control end of the loop resistance tester is connected to the movable pressing part through a control connection line.

[0030] Furthermore, the wiring board loop resistance testing device also includes:

[0031] Display module;

[0032] The display module is connected to the loop resistance tester; the display module is used to display the loop resistance of the wiring board.

[0033] Furthermore, the wiring board loop resistance testing device also includes:

[0034] Alarm module;

[0035] The alarm module is connected to the loop resistance tester;

[0036] The loop resistance tester is used to send an alarm signal to the alarm module if the pressure value is less than the preset pressure value for the first preset time period, so as to control the alarm module to perform alarm processing.

[0037] Furthermore, the wiring board loop resistance testing device also includes:

[0038] Power supply module; the power supply module is connected with the loop resistance tester and the wiring clamp module;

[0039] The power supply module is used to power the loop resistance tester and the terminal clamp module.

[0040] Furthermore, the pressure detection module includes a pressure sensor.

[0041] The wiring board loop resistance testing device provided by the embodiment of the present invention includes a loop resistance tester, a connecting wire group and a wiring clamp module. The wiring board is clamped by the wiring clamp module, and the pressure value applied by the wiring clamp module is detected in real time, and the pressure value is transmitted to the loop resistance tester. The loop resistance detector compares the pressure value with a preset pressure value, and sends a tightening signal to the wiring clamp module according to the comparison result. The wiring clamp module receives the tightening signal and performs tightening processing according to the tightening signal to make the pressure value equal to the preset pressure value. After the pressure value is equal to the preset pressure value, the loop resistance detector detects the loop resistance of the wiring board, which can ensure that each time the loop resistance of the wiring board is measured, the clamping force of the wiring clamp module on the wiring board can be automatically adjusted to ensure that the clamping force of the wiring clamp module on the wiring board is the same during each measurement, thereby reducing the measurement error.

[0042] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 is a structural schematic diagram of a wiring board loop resistance testing device provided according to an embodiment of the present invention;

[0045] Figure 2 is a structural schematic diagram of another wiring board loop resistance testing device provided according to an embodiment of the present invention;

[0046] Figure 3 is a structural front view of a wiring clip provided according to an embodiment of the present invention;

[0047] Figure 4 is a left side view of a structure of a wiring clip provided according to an embodiment of the present invention;

[0048] Figure 5 is a right side view of a wiring clip provided according to an embodiment of the present invention;

[0049] Figure 6 is a structural schematic diagram of another wiring board loop resistance testing device provided according to an embodiment of the present invention;

[0050] Figure 7is a structural schematic diagram of another wiring board loop resistance testing device provided according to an embodiment of the present invention;

[0051] Figure 8 It is a structural schematic diagram of another wiring board loop resistance testing device provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0054] The embodiment of the present invention provides a wiring board loop resistance testing device, Figure 1 is a schematic diagram of a wiring board loop resistance test device provided according to an embodiment of the present invention, with reference to Figure 1 , the terminal block loop resistance test device includes:

[0055] Loop resistance tester 1, connecting wire set 2 and wiring clamp module 3;

[0056] The loop resistance tester 1 is electrically connected to the wiring clamp module 3 via the connecting wire set 2;

[0057] The wiring clamp module 3 is used to clamp the wiring board 4, and detect the pressure value applied by the wiring clamp module 3 in real time, and transmit the pressure value to the loop resistance tester 1;

[0058] The loop resistance detector 1 is used to compare the pressure value with the preset pressure value, and send a tightening signal to the wiring clamp module 3 according to the comparison result;

[0059] The wiring clamp module 3 is used to receive a tightening signal and perform tightening processing according to the tightening signal so that the pressure value is equal to a preset pressure value;

[0060] The loop resistance detector 1 is also used to detect the loop resistance of the wiring board 4 when the pressure value is equal to the preset pressure value.

[0061] Specifically, when testing the loop resistance of the wiring board 4, the wiring board 4 needs to be fixed on the wiring clamp module 3 first. At this time, the clamping force of the wiring clamp module 3 on the wiring board 4 is small, and it can only play the role of fixing the wiring board 4. Since the test result of the loop resistance of the wiring board 4 is related to the clamping force applied by the wiring clamp module 3 to the wiring board 4, different clamping forces will lead to different measurement errors each time the measurement is performed. When the clamping force is insufficient, it is easy to cause the measurement result to be biased and there is a certain operational risk. At this time, the wiring clamp module 3 will transmit the real-time pressure value detected to the loop resistance detector 1, and the loop resistance detector 1 will compare the pressure value with the preset pressure value. If the pressure value is less than the preset pressure value, a tightening signal is sent to the wiring clamp module 3 to continue to apply the clamping force to the wiring board through the wiring clamp module 3, so that the measured pressure value is equal to the preset pressure value, and when the measured pressure value is equal to the preset pressure value, the loop resistance of the wiring board 4 is detected. Among them, the preset pressure value can be set according to the actual situation, and the embodiment of the present invention does not limit this.

[0062] The wiring board loop resistance testing device provided by the embodiment of the present invention comprises a loop resistance tester 1, a connecting wire group 2 and a wiring clamp module 3. The wiring board 4 is clamped by the wiring clamp module 3, and the pressure value applied by the wiring clamp module 3 is detected in real time, and the pressure value is transmitted to the loop resistance tester 1. The loop resistance detector 1 compares the pressure value with the preset pressure value, and sends a tightening signal to the wiring clamp module 3 according to the comparison result. The wiring clamp module 3 receives the tightening signal and performs tightening processing according to the tightening signal to make the pressure value equal to the preset pressure value. After the pressure value is equal to the preset pressure value, the loop resistance detector 1 detects the loop resistance of the wiring board 4, which can ensure that each time the loop resistance of the wiring board 4 is measured, the clamping force of the wiring clamp module 3 on the wiring board 4 can be automatically adjusted to ensure that the clamping force of the wiring clamp module 3 on the wiring board 4 is the same during each measurement, thereby reducing the measurement error.

[0063] Furthermore, Figure 2 is a schematic diagram of the structure of another wiring board loop resistance testing device provided according to an embodiment of the present invention, Figure 2 , the terminal clamp module includes:

[0064] Wiring clamp 31 and pressure detection module 32;

[0065] The pressure detection module 32 is connected to the loop resistance tester 1 through the connecting wire group 2; the pressure detection module 1 is used to detect the pressure value applied by the wiring clamp 31 in real time and transmit the pressure value to the loop resistance tester 1;

[0066] The wiring clamp 31 is connected to the loop resistance tester 1 through the connecting wire group 2. The loop resistance tester 1 is used to compare the pressure value with the preset pressure value and send a tightening signal to the wiring clamp 31 according to the comparison result to test the loop resistance of the wiring board 4.

[0067] Specifically, when testing the loop resistance of the terminal block 4, the terminal block 4 must first be fixed on the terminal clamp 31. At this time, the pressure detection module 32 will transmit the real-time pressure value detected to the loop resistance detector 1. The loop resistance detector 1 will compare the pressure value with the preset pressure value. If the pressure value is less than the preset pressure value, a tightening signal will be sent to the terminal clamp 31 to continue to apply clamping force to the terminal block 4 through the terminal clamp 31, so that the measured pressure value is equal to the preset pressure value, and when the measured pressure value is equal to the preset pressure value, the loop resistance of the terminal block 4 is detected.

[0068] Furthermore, Figure 3 is a structural front view of a wiring clip provided according to an embodiment of the present invention, Figure 4 This is a left side view of a wiring clip provided according to an embodiment of the present invention. Figure 5 is a right side view of a wiring clip provided according to an embodiment of the present invention, referring to Figure 1 , Figure 3-Figure 5 , the wiring clamp includes a fixed pressing portion 311 and a movable pressing portion 312;

[0069] The fixed pressing portion 311 includes two first contacts 011, a first contact fixing portion 012 and a fixed connecting portion 013. The two first contacts 011 are arranged on the first contact surface of the first contact fixing portion 012. The first end of the first contact fixing portion 012 is connected to the first end of the fixed connecting portion 013, and the first contact fixing portion 012 and the fixed connecting portion 013 are perpendicular to each other.

[0070] The movable pressing portion 312 includes two second contacts 021, a pressing bottom 022 and a second contact fixing portion 023. The pressing bottom 022 is slidably arranged with the fixed connection portion 013, and the second contact fixing portion 023 is arranged on a surface of the pressing bottom 022 close to the first contact fixing portion 012; the two second contacts 021 are arranged on a second contact surface of the second contact fixing portion 023 close to the first contact surface, and the two second contacts 021 are arranged one-to-one correspondingly with the two first contacts 011;

[0071] The loop resistance tester 1 is electrically connected to the fixed pressing part 311 and the movable pressing part 312 of the wiring clamp module 3 through the connecting wire group 2; the loop resistance tester 1 is used to compare the pressure value with the preset pressure value, and send a tightening signal to the movable pressing part 312 according to the comparison result;

[0072] The mobile pressing part 312 is used to receive a tightening signal and perform a tightening process according to the tightening signal so that the pressure value is equal to a preset pressure value.

[0073] Specifically, after the terminal block 4 is fixed by the fixed clamping part 311 and the movable clamping part 312, the pressure detection module 32 will transmit the real-time pressure value detected to the loop resistance detector 1. The loop resistance detector 1 will compare the pressure value with the preset pressure value. If the pressure value is less than the preset pressure value, a tightening signal is sent to the movable clamping part 312, so that the clamping bottom 022 drives the movable clamping part 312 to slide on the fixed connecting part 013 to move toward the direction close to the two first contacts 011, thereby continuing to apply clamping force to the terminal block 4 so that the measured pressure value is equal to the preset pressure value, and when the measured pressure value is equal to the preset pressure value, the loop resistance of the terminal block 4 is detected.

[0074] Furthermore, the loop resistance tester is used to:

[0075] The pressure value is compared with the preset pressure value, and a tightening signal is sent to the terminal clamp module according to the comparison result and the proportional-integral-differential control method.

[0076] Specifically, the clamping force of the terminal clamp module on the terminal board can be automatically adjusted according to the pressure value and the proportional-integral-differential control method, so as to ensure that the clamping force of the terminal clamp module on the terminal board is the same during each measurement. For example, when a difference between the pressure value and the preset pressure value is detected, the proportional control part in the proportional-integral-differential control method responds immediately, and eliminates the continuous deviation of the clamping force through the integral control part. Finally, the differential control part performs rapid compensation according to the rate of change of the clamping force to achieve that the measured pressure value is equal to the preset pressure value.

[0077] Furthermore, Figure 6 is a schematic diagram of the structure of another wiring board loop resistance testing device provided according to an embodiment of the present invention, with reference to Figure 6 , loop resistance tester includes:

[0078] A pressure fine adjustment module 11 and a resistance detection module 12;

[0079] The first end of the pressure fine-tuning module 11 is electrically connected to the pressure detection module 32 through the connecting wire group 2; the pressure fine-tuning module 11 is used to receive the pressure value detected in real time by the pressure detection module 32, compare the pressure value with the preset pressure value, and send a tightening signal to the wiring clamp 31 according to the comparison result;

[0080] The second end of the pressure fine-tuning module 11 is electrically connected to the first end of the resistance detection module 12, and the second end of the resistance detection module 12 is electrically connected to the second end of the wiring clamp 31 through the connecting wire group 2. The pressure fine-tuning module 11 is also used to send a detection signal to the resistance detection module 12 when the pressure value is equal to a preset pressure value, so as to detect the loop resistance of the terminal board 4 through the resistance detection module 12.

[0081] Specifically, when testing the loop resistance of the terminal block 4, the terminal block 4 must first be fixed on the terminal clamp 31. At this time, the pressure detection module 32 will transmit the real-time detected pressure value to the pressure fine-tuning module 11. The pressure fine-tuning module 11 will compare the pressure value with the preset pressure value. If the pressure value is less than the preset pressure value, a tightening signal is sent to the terminal clamp 31 to continue to apply a clamping force to the terminal block 4 through the terminal clamp 31, so that the measured pressure value is equal to the preset pressure value. When the measured pressure value is equal to the preset pressure value, a detection signal is sent to the resistance detection module 12 to detect the loop resistance of the terminal block 4.

[0082] Further, the connection line group includes a first voltage connection line, a second voltage connection line, a first current connection line, a second voltage connection line, a detection connection line and a control connection line;

[0083] The first voltage connection terminal of the loop resistance tester is connected to one of the first contacts through a first voltage connection line, and the second voltage connection terminal of the loop resistance tester is connected to another first contact through a second voltage connection line; the first current connection terminal of the loop resistance tester is connected to one of the second contacts through a first current connection line, and the second current connection terminal of the loop resistance tester is connected to another second contact through a second current connection line;

[0084] The detection end of the loop resistance tester is connected to the pressure detection module through a detection connection line; the control end of the loop resistance tester is connected to the movable pressing part through a control connection line.

[0085] Specifically, the connecting wire group can be integrated by a first voltage connecting wire, a second voltage connecting wire, a first current connecting wire, a second voltage connecting wire, a detection connecting wire and a control connecting wire, with 6 connectors led out at both ends, which are respectively connected to a loop resistance tester and a wiring clamp module; and the distance between the first contact and the second contact can be adjusted according to the thickness of different wiring boards.

[0086] For further reference Figure 1 , the terminal block loop resistance test device also includes:

[0087] Display module 5;

[0088] The display module 5 is connected to the loop resistance tester 1 ; the display module 5 is used to display the loop resistance of the wiring board 4 .

[0089] Specifically, after the loop resistance of the wiring board 4 is detected, the detected loop resistance of the wiring board can be transmitted to the display module 5 for display, so as to facilitate the staff to check.

[0090] Furthermore, Figure 7 is a schematic diagram of the structure of another wiring board loop resistance testing device provided according to an embodiment of the present invention, with reference to Figure 7 , the terminal block loop resistance test device also includes:

[0091] Alarm module 6;

[0092] The alarm module 6 is connected to the loop resistance tester 1;

[0093] The loop resistance tester 1 is used to send an alarm signal to the alarm module 6 if the pressure value is less than the preset pressure value for a first preset time period, so as to control the alarm module 6 to perform alarm processing.

[0094] Specifically, if the detected pressure value is less than the preset pressure value for a first preset period of time, it means that the terminal clamp module 3 cannot apply the preset clamping force to the terminal board 4 so that the measured pressure value is equal to the preset pressure value. At this time, an alarm signal can be sent to the alarm module 6 to control the alarm module 6 to perform alarm processing, reminding the staff that the terminal board loop resistance testing device has an abnormality and needs to be repaired in time.

[0095] Furthermore, Figure 8 is a schematic diagram of the structure of another wiring board loop resistance testing device provided according to an embodiment of the present invention, Figure 8 , the terminal block loop resistance test device also includes:

[0096] Power module 7; the power module 7 is connected to the loop resistance tester 1 and the wiring clamp module 3;

[0097] The power supply module 7 is used to supply power to the loop resistance tester 1 and the wiring clamp module 3 .

[0098] Specifically, the power module 7 can be a charging power supply or a non-charging power supply. Exemplarily, the power module 7 outputs 30A DC, 50A DC or 100A DC at a constant current according to actual conditions.

[0099] Furthermore, the pressure detection module includes a pressure sensor.

[0100] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0101] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wiring board loop resistance test device, characterized in that: include: Loop resistance tester, connecting wire set and terminal clamp module; The loop resistance tester is electrically connected to the wiring clamp module via the connecting wire set; The wiring clamp module is used to clamp the wiring board, and detect the pressure value applied by the wiring clamp module in real time, and transmit the pressure value to the loop resistance tester; The loop resistance detector is used to compare the pressure value with a preset pressure value and send a tightening signal to the wiring clamp module according to the comparison result; The wiring clamp module is used to receive the tightening signal and perform tightening processing according to the tightening signal so that the pressure value is equal to the preset pressure value; The loop resistance detector is also used to detect the loop resistance of the wiring board when the pressure value is equal to the preset pressure value.

2. The terminal block loop resistance test device according to claim 1, characterized in that: The terminal clamp module comprises: Wiring clamps and pressure detection modules; The pressure detection module is connected to the loop resistance tester through the connecting wire group; the pressure detection module is used to detect the pressure value applied by the wiring clamp in real time and transmit the pressure value to the loop resistance tester; The wiring clamp is connected to the loop resistance tester via the connecting wire group. The loop resistance tester is used to compare the pressure value with a preset pressure value and send a tightening signal to the wiring clamp according to the comparison result to test the loop resistance of the wiring board.

3. The terminal block loop resistance test device according to claim 2, characterized in that: The wiring clamp comprises a fixed pressing part and a movable pressing part; The fixed pressing portion includes two first contacts, a first contact fixing portion and a fixed connecting portion, the two first contacts are arranged on a first contact surface of the first contact fixing portion, a first end of the first contact fixing portion is connected to a first end of the fixed connecting portion, and the first contact fixing portion and the fixed connecting portion are perpendicular to each other; The movable pressing part comprises two second contacts, a pressing bottom and a second contact fixing part, the pressing bottom and the fixed connection part are slidably arranged, and the second contact fixing part is arranged on the surface of the pressing bottom close to the first contact fixing part; The two second contacts are arranged on the second contact surface of the second contact fixing portion close to the first contact surface, and the two second contacts are arranged in one-to-one correspondence with the two first contacts; The loop resistance tester is electrically connected to the fixed pressing part and the movable pressing part of the wiring clamp module through the connecting wire group; the loop resistance detector is used to compare the pressure value with the preset pressure value, and send a tightening signal to the movable pressing part according to the comparison result; The movable pressing part is used to receive the tightening signal and perform a tightening process according to the tightening signal so that the pressure value is equal to the preset pressure value.

4. The terminal block loop resistance test device according to claim 1, characterized in that: The loop resistance detector is used for: The pressure value is compared with a preset pressure value, and a tightening signal is sent to the wiring clamp module according to the comparison result and a proportional-integral-differential control method.

5. The terminal block loop resistance test device according to claim 2, characterized in that: The loop resistance detector comprises: Pressure fine adjustment module and resistance detection module; The first end of the pressure fine-adjusting module is electrically connected to the pressure detection module through the connecting wire group; the pressure fine-adjusting module is used to receive the pressure value detected by the pressure detection module in real time, compare the pressure value with a preset pressure value, and send a tightening signal to the wiring clamp according to the comparison result; The second end of the pressure fine-tuning module is connected to the first end of the resistance detection module, and the second end of the resistance detection module is electrically connected to the second end of the wiring clamp through the connecting wire group. The pressure fine-tuning module is also used to send a detection signal to the resistance detection module when the pressure value is equal to the preset pressure value, so as to detect the loop resistance of the wiring board through the resistance detection module.

6. The terminal block loop resistance test device according to claim 3, characterized in that: The connection line group includes a first voltage connection line, a second voltage connection line, a first current connection line, a second voltage connection line, a detection connection line and a control connection line; The first voltage connection end of the loop resistance tester is connected to one of the first contacts through the first voltage connection line, and the second voltage connection end of the loop resistance tester is connected to another of the first contacts through the second voltage connection line; the first current connection end of the loop resistance tester is connected to one of the second contacts through the first current connection line, and the second current connection end of the loop resistance tester is connected to another of the second contacts through the second current connection line; The detection end of the loop resistance tester is connected to the pressure detection module through the detection connection line; the control end of the loop resistance tester is connected to the movable pressing part through the control connection line.

7. The terminal block loop resistance test device according to claim 1, characterized in that: Also includes: Display module; The display module is connected to the loop resistance tester; The display module is used to display the loop resistance of the wiring board.

8. The terminal block loop resistance test device according to claim 1, characterized in that: Also includes: Alarm module; The alarm module is connected to the loop resistance tester; The loop resistance tester is used to send an alarm signal to the alarm module if the pressure value is less than the preset pressure value for a first preset time period, so as to control the alarm module to perform alarm processing.

9. The terminal block loop resistance test device according to claim 1, characterized in that: Also includes: Power module; The power supply module is connected to the loop resistance tester and the wiring clamp module; The power supply module is used to supply power to the loop resistance tester and the wiring clamp module.

10. The terminal block loop resistance test device according to claim 1, characterized in that: The pressure detection module includes a pressure sensor.

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