Cable conduction measurement system and device

Abstract

The embodiment of the utility model discloses a cable conduction measuring system and equipment, which comprises a resistance measuring module, a signal conditioning module and a conduction detecting module, the resistance measuring module acquires the resistance of a measured cable and sends a corresponding resistance signal, the signal conditioning module acquires the resistance signal, the conduction detecting module receives an electric signal, and the electric signal is transmitted to the signal conditioning module. And a conduction result of the tested cable is obtained. By arranging the signal conditioning module, a resistance signal is converted into an electric signal which can be identified by the conduction detection module, so that synchronous measurement of the resistance measurement module and the conduction detection module is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of cable continuity testing, and in particular to a cable continuity measurement system and equipment. Background Art

[0002] Reliable and effective cable connections are fundamental to the safe operation of electrical equipment. Currently, cable continuity testing mostly relies on resistance measuring devices such as multimeters or megohmmeters. This method manually checks each conductor in a single system, point by point, according to process instructions to determine if the continuity and insulation meet standards. This manual calibration method is not only labor-intensive and time-consuming, but also leads to misoperation and misjudgment as the number of cable cores increases, resulting in poor reliability of cable continuity test results. Furthermore, because resistance measuring devices often lack real-time data output capabilities or require specialized measurement software to collect output data, they cannot be integrated with other measurement and control systems for synchronous measurement. Summary of the Invention

[0003] In view of this, the utility model provides a cable conductivity measurement system and equipment.

[0004] The specific technical solution of the first embodiment of the present utility model is: a cable conductivity measurement system, the system includes: a resistance measurement module, a signal conditioning module and a conductivity detection module; the input end of the resistance measurement module is connected to the cable under test, the output end of the resistance measurement module is connected to the input end of the signal conditioning module, the resistance measurement module is used to obtain the resistance of the cable under test, and send a resistance signal corresponding to the resistance to the signal conditioning module; the output end of the signal conditioning module is connected to the input end of the conductivity detection module, the signal conditioning module is used to obtain the resistance signal and send an electrical signal to the conductivity detection module; the conductivity detection module is used to receive the electrical signal and obtain the conductivity result of the cable under test.

[0005] Preferably, the resistance signal includes a resistance value signal, a resistance unit signal, a resistance decimal point signal and a cable common end signal of the tested cable.

[0006] Preferably, the electrical signal includes a high-level signal and a low-level signal.

[0007] Preferably, the system further comprises a channel selection module; the output end of the channel selection module is connected to the input end of the resistance measurement module, and the channel selection module is used to set the resistance range measured by the resistance measurement module.

[0008] Preferably, the system also includes a first signal transmission module and a second signal transmission module; the input end of the first signal transmission module is connected to the output end of the resistance measurement module, the output end of the first signal transmission module is connected to the input end of the second signal transmission module, the first signal transmission module is used to obtain the resistance signal and send the resistance signal to the second signal transmission module; the output end of the second signal transmission module is connected to the input end of the signal conditioning module, the second signal transmission module is used to obtain the resistance signal and send the resistance signal to the signal conditioning module.

[0009] Preferably, the system further comprises a display module; an input end of the display module is connected to an output end of the resistance measuring module, and the display module is used to obtain the resistance signal and display the corresponding resistance value.

[0010] Preferably, the system further comprises a host computer; an input end of the host computer is connected to an output end of the conduction detection module, and the host computer is used to obtain the conduction result and display the conduction result.

[0011] Preferably, the system also includes a power supply module; the power supply module is connected to the resistance measurement module, the signal conditioning module and the conduction detection module, and the power supply module is used to supply power to the resistance measurement module, the signal conditioning module and the conduction detection module.

[0012] Preferably, the resistance measurement module is a multimeter, the conduction detection module is a tester, and the signal conditioning module is arranged in the tester.

[0013] The specific technical solution of the second embodiment of the present invention is: a cable continuity measurement device, including the cable continuity measurement system as described in any one of the first embodiments of the present application.

[0014] The implementation of the present invention will have the following beneficial effects:

[0015] The utility model includes a resistance measurement module, a signal conditioning module, and a continuity detection module. The resistance measurement module obtains the resistance value of the cable under test and sends a corresponding resistance signal. The signal conditioning module obtains the resistance signal. The continuity detection module receives the electrical signal and obtains the continuity result of the cable under test. By providing the signal conditioning module, the resistance signal is converted into an electrical signal that can be recognized by the continuity detection module, thereby achieving synchronous measurement of the resistance measurement module and the continuity detection module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 paying any creative work.

[0017] Figure 1 This is a structural diagram of the cable continuity measurement system;

[0018] Figure 2 It is a resistance signal schematic diagram;

[0019] Figure 3 is a schematic diagram of an electrical signal;

[0020] Figure 4 This is a schematic diagram of the structural connection between the multimeter and the tester;

[0021] Figure 5 Schematic diagram of measurement and control principle;

[0022] Figure 6 This is a schematic diagram of the multimeter data output interface;

[0023] Among them, 101, resistance measurement module; 102, signal conditioning module; 103, continuity detection module; 201, tester; 202, red test lead interface on the tester end; 203, signal input interface on the tester end; 204, black test lead interface on the tester end; 205, upper end interface of the cable on the tester end; 206, lower end interface of the cable on the tester end; 207, red test lead interface on the multimeter end; 208, multimeter; 209, black test lead interface on the multimeter end; 2010, signal connection line; 2011, signal output interface on the multimeter end; 2012, upper end jumper wire; 2013, lower end jumper wire; 2014, cable under test; 2015, red test lead connection line; 2016, black test lead connection line. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] In the specific embodiment, see Figure 1, is a structural schematic diagram of a cable continuity measurement system in the first embodiment of the present application, which realizes synchronous measurement of a resistance measurement module and a continuity detection module. The cable continuity measurement system includes: a resistance measurement module 101, a signal conditioning module 102, and a continuity detection module 103; the input end of the resistance measurement module 101 is connected to the cable under test, and the output end of the resistance measurement module 101 is connected to the input end of the signal conditioning module 102. The resistance measurement module 101 is used to obtain the resistance of the cable under test and send a resistance signal corresponding to the resistance to the signal conditioning module 102; the output end of the signal conditioning module 102 is connected to the input end of the continuity detection module 103, the signal conditioning module 102 is used to obtain the resistance signal and send an electrical signal to the continuity detection module 103; the continuity detection module 103 is used to receive the electrical signal and obtain the continuity result of the cable under test.

[0026] Specifically, the signal conditioning module is used to convert the resistance signal of the resistance measurement module into an electrical signal that can be recognized by the conduction detection module. Figure 2 As shown in the middle curve, it contains high-level signals, low-level signals, signal 1, and signal 2. However, for the continuity detection module, it can only identify high-level and low-level signals, and will not be able to identify or misidentify signal 1 and signal 2 at high and low levels, resulting in errors in resistance value collection. To this end, a signal conditioning module is designed to convert the output signal of the resistance measurement module into Figure 3 The shown figure shows only high-level and low-level electrical signals, thereby enabling the conduction detection module to accurately identify the data of the resistance measurement module.

[0027] The cable continuity measurement system in this embodiment is provided with a signal conditioning module to convert the resistance signal into an electrical signal that can be recognized by the continuity detection module, thereby achieving synchronous measurement of the resistance measurement module and the continuity detection module.

[0028] In a specific embodiment, the resistance signal includes the resistance value signal, resistance unit signal, resistance decimal point signal, and cable common terminal signal of the tested cable. Specifically, to obtain an accurate electrical signal, the resistance value signal, resistance unit signal, resistance decimal point signal, and cable common terminal signal related to the resistance are all sent to the signal conditioning module.

[0029] In a specific embodiment, the electrical signal includes a high-level signal and a low-level signal. Specifically, the high-level signal and the low-level signal enable the conduction detection module to obtain a more accurate conduction result.

[0030] In a specific embodiment, the cable continuity measurement system further includes a channel selection module; the output of the channel selection module is connected to the input of the resistance measurement module, and the channel selection module is used to set the resistance range measured by the resistance measurement module. Specifically, the channel selection module is configured with multiple channel modules with different resistance ranges, and different resistance ranges can be obtained by selecting a specific channel.

[0031] In a specific embodiment, the cable continuity measurement system further includes a first signal transmission module and a second signal transmission module; the input end of the first signal transmission module is connected to the output end of the resistance measurement module, the output end of the first signal transmission module is connected to the input end of the second signal transmission module, the first signal transmission module is used to obtain the resistance signal and send the resistance signal to the second signal transmission module; the output end of the second signal transmission module is connected to the input end of the signal conditioning module, the second signal transmission module is used to obtain the resistance signal and send the resistance signal to the signal conditioning module. Specifically, when the resistance measurement module does not have a data output function, the first signal transmission module is used to obtain data from the resistance measurement module, and the second signal transmission module is used to transmit the data from the resistance measurement module to the signal conditioning module, thereby achieving data collection and transmission.

[0032] In a specific embodiment, the cable continuity measurement system further includes a display module; the input of the display module is connected to the output of the resistance measurement module, and the display module is configured to obtain the resistance signal and display the corresponding resistance value. Specifically, the display module is configured to accurately display the resistance value of the measured cable.

[0033] In a specific embodiment, the cable continuity measurement system further includes a host computer; an input terminal of the host computer is connected to an output terminal of the continuity detection module, and the host computer is configured to obtain and display the continuity result. Specifically, by configuring the host computer, the continuity result of the tested cable can be accurately displayed.

[0034] In a specific embodiment, the cable continuity measurement system also includes a power supply module; the power supply module is connected to the resistance measurement module, the signal conditioning module and the continuity detection module, and the power supply module is used to supply power to the resistance measurement module, the signal conditioning module and the continuity detection module.

[0035] In a specific embodiment, the resistance measurement module is a multimeter, the conduction detection module is a tester, and the signal conditioning module is provided in the tester.

[0036] Specifically, the structural connection diagram of the multimeter and the tester is as follows Figure 4As shown, 201 is a tester, which is connected to the cable under test through the upper end interface 205 of the tester cable and the lower end interface 206 of the tester cable. The cable core can be connected to the red test lead interface 202 or the black test lead interface 204 of the tester through the channel selection module of the tester, and the multimeter measurement data is input through the signal input interface 203 of the tester.

[0037] 208 is a multimeter, whose red test lead interface 207 at the multimeter end is connected to the red test lead interface 202 at the tester end through a red test lead connecting line 2015, and the black test lead interface 209 at the multimeter end is connected to the red test lead interface 204 at the tester end through a black test lead connecting line 2016; its signal output interface 2011 at the multimeter end is connected to the signal input interface 203 at the tester end through a signal connecting line 2010.

[0038] 2014 is the tested cable, which is connected to the upper end interface 205 of the tester cable through the upper end jumper line 2012 and is connected to the lower end interface 206 of the tester cable through the lower end jumper line 2013.

[0039] The multimeter uses its red and black test leads to measure the resistance at both ends of the cable under test. The measurement results are displayed on an LCD screen. The electrical signals driving the LCD display, such as the resistance value, resistance unit, decimal point, and common terminal information, are transmitted to the tester via a connecting cable. The tester's internal signal conditioning module converts these signals into electrical signals recognizable by the controller, enabling the tester to collect the multimeter's measurement results in real time. The connection between the multimeter leads and the different cores of the cable under test is switched by the tester's internal channel selection module.

[0040] Specifically, the measurement and control principle is as follows Figure 5 As shown, since the multimeter itself often does not have a data output function, or its output data needs to be collected through special software, real-time communication between the tester and the multimeter cannot be achieved. Therefore, the utility model adopts a method of decoding the multimeter LCD screen drive signal to achieve indirect reading of the measurement results.

[0041] Taking the FLUKE15B+ multimeter as an example, its LCD screen has a total of 20 signal lines. The utility model transfers 12 signal lines related to the resistance result display to the 11 multimeter end signal output interface, thereby realizing the synchronous output of the multimeter measurement results. The schematic diagram of the multimeter data output interface is as follows Figure 6 shown.

[0042] By decoding the multimeter LCD screen driving signal, real-time reading of the multimeter measurement results is achieved.

[0043] By combining the real-time acquisition function of the multimeter measurement results with the multi-channel measurement and control system, a multimeter online measurement multi-channel cable continuity test device was designed, which realized the synchronous control and measurement of the measurement and control system and the multimeter, and improved the accuracy and versatility of the cable continuity measurement device.

[0044] In a specific embodiment, the second embodiment of the present application provides a cable continuity measurement device, comprising the cable continuity measurement system described in any one of the first embodiments of the present application. The cable continuity measurement device in this embodiment utilizes a signal conditioning module to convert a resistance signal into an electrical signal recognizable by a continuity detection module, thereby enabling simultaneous measurement by the resistance measurement module and the continuity detection module.

[0045] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A cable continuity measurement system, characterized in that: The system includes: a resistance measurement module, a signal conditioning module and a conduction detection module; The input end of the resistance measurement module is connected to the cable under test, and the output end of the resistance measurement module is connected to the input end of the signal conditioning module. The resistance measurement module is used to obtain the resistance value of the cable under test and send a resistance signal corresponding to the resistance value to the signal conditioning module; The output end of the signal conditioning module is connected to the input end of the conduction detection module, and the signal conditioning module is used to obtain the resistance signal and send an electrical signal to the conduction detection module; The conduction detection module is used to receive the electrical signal and obtain the conduction result of the tested cable.

2. The cable continuity measurement system according to claim 1, wherein: The resistance signal includes a resistance value signal, a resistance unit signal, a resistance decimal point signal and a cable common end signal of the tested cable.

3. The cable continuity measurement system according to claim 1, wherein: The electrical signal includes a high-level signal and a low-level signal.

4. The cable continuity measurement system according to claim 1, wherein: The system also includes a channel selection module; The output end of the channel selection module is connected to the input end of the resistance measurement module, and the channel selection module is used to set the resistance range measured by the resistance measurement module.

5. The cable continuity measurement system according to claim 1, wherein: The system further includes a first signal transmission module and a second signal transmission module; The input end of the first signal transmission module is connected to the output end of the resistance measurement module, and the output end of the first signal transmission module is connected to the input end of the second signal transmission module. The first signal transmission module is used to obtain the resistance signal and send the resistance signal to the second signal transmission module; The output end of the second signal transmission module is connected to the input end of the signal conditioning module. The second signal transmission module is used to obtain the resistance signal and send the resistance signal to the signal conditioning module.

6. The cable continuity measurement system according to claim 1, wherein: The system further includes a display module; The input end of the display module is connected to the output end of the resistance measurement module, and the display module is used to obtain the resistance signal and display the corresponding resistance value.

7. The cable continuity measurement system according to claim 1, wherein: The system also includes a host computer; The input end of the host computer is connected to the output end of the conduction detection module, and the host computer is used to obtain the conduction result and display the conduction result.

8. The cable continuity measurement system according to claim 1, wherein: The system also includes a power supply module; The power supply module is connected to the resistance measurement module, the signal conditioning module and the conduction detection module, and is used to supply power to the resistance measurement module, the signal conditioning module and the conduction detection module.

9. The cable continuity measurement system according to claim 1, wherein: The resistance measurement module is a multimeter, the conduction detection module is a tester, and the signal conditioning module is arranged in the tester.

10. A cable continuity measurement device, characterized in that: The invention comprises the cable continuity measurement system according to any one of claims 1 to 9.

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