Conductor DC Resistance Detection Device and Method Based on Infrared Temperature Measurement

Abstract

The conductor DC resistance detection device based on infrared temperature measurement provided by the present invention includes a conductor resistance detection device, an infrared temperature measurement device, and a signal processing system. The conductor resistance detection device includes a base, two clamping components, and a tester. The two clamping components are arranged on both sides of the base. Voltage connectors and current connectors are arranged on both sides of the base, and the voltage connectors and the current connectors are respectively connected to the tester. The infrared temperature measurement device includes an infrared temperature collector, a plurality of infrared temperature sensors, and an infrared temperature measurement bracket. The infrared temperature measurement bracket is fixed on the base, the infrared temperature measurement bracket is located on one side of the clamping component, the infrared temperature sensors are arranged on the infrared temperature measurement bracket, and the infrared temperature sensors are connected to the infrared temperature collector. The conductor DC resistance detection device based on infrared temperature measurement provided by the present invention realizes intelligent detection and data processing throughout the detection process, saves time, and makes the measurement result more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of building electrical material testing, and particularly to a conductor DC resistance detection device and method based on infrared temperature measurement. Background Art

[0002] The conductor current resistance of a cable is an important indicator characterizing the cable's conductivity. Only by knowing whether the DC resistance is qualified can the conductivity of the cable be judged. Therefore, in order to control the quality of cables, in addition to requiring the cable performance to meet the national standard requirements, before cable installation, a sampling experiment of DC resistance is required.

[0003] During the measurement of conductor DC resistance, currently, the measurement of ambient temperature is generally used to indirectly reflect the conductor temperature. However, since the air temperature is usually difficult to stabilize, the measured ambient temperature will be quite different from the actual temperature of the conductor. And in the currently adopted measurement method, manual measurement of the temperature at one place of the cable under test is required, and the temperature needs to be manually recorded, and further conversion of the resistance value per unit length at the standard temperature is required, which increases the workload. Therefore, the existing conductor DC resistance detection devices cannot automatically measure the temperature of the cable under test, and manual temperature recording is required, resulting in a complex and time-consuming measurement process. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a conductor DC resistance detection device based on infrared temperature measurement, which can solve the problems that the existing conductor DC resistance detection devices cannot automatically measure the temperature of the cable under test, and manual temperature recording is required, resulting in a complex and time-consuming measurement process.

[0005] Another objective of the present invention is to provide a conductor DC resistance detection method based on infrared temperature measurement, which can solve the problems that the existing conductor DC resistance detection devices cannot automatically measure the temperature of the cable under test, and manual temperature recording is required, resulting in a complex and time-consuming measurement process.

[0006] The first objective of the present invention is achieved by adopting the following technical solutions:

[0007] A conductor DC resistance detection device based on infrared temperature measurement, comprising a conductor resistance detection device, an infrared temperature measurement device and a signal processing system. The conductor resistance detection device includes a base, two clamping components and a tester. The two clamping components are arranged on both sides of the base. Voltage connectors and current connectors are arranged on both sides of the base. The voltage connector and the current connector are respectively connected to the tester. The infrared temperature measurement device includes an infrared temperature collector, a plurality of infrared temperature sensors and an infrared temperature measurement bracket. The infrared temperature measurement bracket is fixed on the base. The infrared temperature measurement bracket is located on one side of the clamping component. The infrared temperature sensors are arranged on the infrared temperature measurement bracket. The infrared temperature sensors are connected to the infrared temperature collector. The infrared temperature collector and the tester are both communicatively connected to the signal processing system. The infrared temperature collector and the tester are both placed on one side of the base;

[0008] The tester measures the resistance value of the cable under test through the voltage connector and the current connector, and the tester sends the resistance value to the signal processing system. The infrared temperature collector obtains the temperature values of the cable under test sent by different infrared temperature sensors and sends them to the signal processing system. The signal processing system calculates the average temperature value of the cable under test according to all the temperature values of the cable under test. The signal processing system performs conversion of the resistance value per unit length at the standard temperature according to the resistance value and the average temperature value of the cable under test.

[0009] Further, the clamping component includes a sliding block, a fixed block, a cross bar, an adjusting nut and a fixture bottom plate. The fixture bottom plate is fixed on one side of the base. The fixed block is fixed on the fixture bottom plate. The sliding block is movably fixed on the fixture bottom plate. The adjusting nut passes through the fixed block and the sliding block respectively. The adjusting nut is threadedly connected to the sliding block. One end of the cross bar is connected to the fixed block. The other end of the cross bar passes through the sliding block. The cross bar is located below the adjusting nut. The movement of the adjusting nut drives the sliding block to move on the cross bar towards the direction where the fixed block is located. The cable under test is fixed between the sliding block and the fixed block.

[0010] Further, a cable channel is formed between the sliding block and the fixed block of the cable. The cable under test is located in the cable channel.

[0011] Further, the infrared temperature sensor and the cable under test are at the same horizontal height.

[0012] Further, the voltage connector and the tester are connected by a voltage wire. The current connector and the tester are connected by a current wire. The infrared temperature sensor and the infrared temperature collector are connected by a signal wire.

[0013] Further, the number of the infrared temperature sensors is three, and the infrared temperature sensors are arranged on the infrared temperature measuring bracket at equal intervals.

[0014] Further, the infrared temperature sensors are movably arranged on the infrared temperature measuring bracket.

[0015] Further, the signal processing system is a computer terminal including a display device and a processing device.

[0016] The second object of the present invention is achieved by the following technical solution:

[0017] A method for detecting the DC resistance of a conductor based on infrared temperature measurement, the method is applied to the device for detecting the DC resistance of a conductor based on infrared temperature measurement of the present application, and includes the following steps:

[0018] Clamp both ends of the cable under test on the clamping component;

[0019] The tester measures the resistance value of the cable under test through the voltage connector and the current connector, and the tester sends the resistance value to the signal processing system;

[0020] The infrared temperature collector obtains the temperature values of the cable under test sent by different infrared temperature sensors, and the infrared temperature collector sends all the temperature values of the cable under test to the signal processing system;

[0021] The signal processing system performs conversion of the resistance value per unit length at the standard temperature according to the resistance value and the temperature value of the cable under test.

[0022] Further, the specific conversion of the resistance value per unit length at the standard temperature by the signal processing system according to the resistance value and the temperature value of the cable under test is: the signal processing system calculates the average temperature value of the cable under test according to all the temperature values of the cable under test, and the signal processing system performs conversion of the resistance value per unit length at the standard temperature according to the resistance value and the average temperature value of the cable under test.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: The conductor DC resistance detection device based on infrared temperature measurement of the present application includes a conductor resistance detection device, an infrared temperature measurement device, and a signal processing system. The conductor resistance detection device includes a base, two clamping components, and a tester. The two clamping components are arranged on both sides of the base. Voltage connectors and current connectors are arranged on both sides of the base, and the voltage connector and the current connector are respectively connected to the tester. The infrared temperature measurement device includes an infrared temperature collector, a plurality of infrared temperature sensors, and an infrared temperature measurement bracket. The infrared temperature measurement bracket is fixed on the base, the infrared temperature measurement bracket is located on one side of the clamping component, the infrared temperature sensors are arranged on the infrared temperature measurement bracket, and the infrared temperature sensors are connected to the infrared temperature collector. Both the infrared temperature collector and the tester are communicatively connected to the signal processing system, and the infrared temperature collector and the tester are both placed on one side of the base. The infrared temperature collector obtains the temperature values of the measured cable at different positions detected by a plurality of infrared temperature sensors, the tester detects the resistance value of the measured cable, the signal processing system calculates the average temperature value of the measured cable according to the temperature values of the measured cable at multiple positions, and then performs conversion of the resistance value per unit length at the standard temperature according to the resistance value and the average temperature value of the measured cable. The entire detection process realizes intelligent detection and data processing, without manual recording of measurement and detection of temperature, saving labor costs. Moreover, the temperature of the cable conductor can be directly measured by the infrared temperature sensors, reducing the error caused by indirectly reflecting the conductor temperature by measuring the ambient temperature. By setting a plurality of infrared temperature sensors to collect the temperatures at multiple positions of the measured cable and taking the average value, the temperature is more representative and the measurement result is more accurate.

[0024] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it in accordance with the content of the description, the following takes the preferred embodiments of the present invention and combines with the drawings to explain in detail as follows. The specific implementation manners of the present invention are given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and the schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0026] Figure 1 is a top view structural schematic diagram of the conductor DC resistance detection device based on infrared temperature measurement of the present invention;

[0027] Figure 2 is a front view structural schematic diagram of the conductor DC resistance detection device based on infrared temperature measurement of the present invention;

[0028] Figure 3Side view structural schematic diagram of the conductor DC resistance detection device based on infrared temperature measurement according to the present invention.

[0029] In the figure: 1, base; 2, clamping component; 21, sliding block; 22, fixed block; 23, fixing nut; 24, fixture bottom plate; 25, adjusting nut; 26, cross bar; 27, cable channel; 3, current joint; 4, voltage joint; 5, infrared temperature measurement bracket; 6, infrared temperature sensor; 7, cable under test. Specific implementation manner

[0030] Next, in combination with the accompanying drawings and specific implementation manners, the present invention will be further described. It should be noted that, on the premise of non-conflict, any combination can be formed between the following-described embodiments or between the technical features to form a new embodiment.

[0031] As Figures 1 - 3As shown in the figure, this embodiment provides a conductor DC resistance detection device based on infrared temperature measurement, which includes a conductor resistance detection device, an infrared temperature measurement device, and a signal processing system. The conductor resistance detection device includes a base 1, two clamping components 2, and a tester. The two clamping components 2 are arranged on both sides of the base 1. Voltage connectors 4 and current connectors 3 are arranged on both sides of the base 1. The voltage connector 4 and the current connector 3 are respectively connected to the tester. The infrared temperature measurement device includes an infrared temperature collector, a plurality of infrared temperature sensors 6, and an infrared temperature measurement bracket 5. The infrared temperature measurement bracket 5 is fixed on the base 1. The infrared temperature measurement bracket 5 is located on one side of the clamping component 2. The infrared temperature sensors 6 are arranged on the infrared temperature measurement bracket 5. The infrared temperature sensors 6 are connected to the infrared temperature collector. The infrared temperature collector and the tester are both communicatively connected to the signal processing system. The infrared temperature collector and the tester are devices that can be directly placed on the ground. The infrared temperature collector and the tester are both placed on one side of the base 1. Both ends of the cable under test 7 are clamped on the clamping component 2. Cable connectors are respectively arranged in the voltage connector 4 and the current connector 3 for connecting the cables on the clamping component 2. The cable under test 7 is electrically connected to the voltage connector 4 and the current connector 3. The clamping component 2 includes a sliding block 21, a fixed block 22, a cross bar 26, an adjusting nut 25, and a fixture bottom plate 24. In this embodiment, the current connector 3 is fixed on the fixture bottom plate 24. The fixture bottom plate 24 is fixed on one side of the base 1 through a fixing nut 23. The fixed block 22 is fixed on the fixture bottom plate 24. The sliding block 21 is movably fixed on the fixture bottom plate 24. The adjusting nut 25 respectively passes through the fixed block 22 and the sliding block 21. The adjusting nut 25 is threadedly connected to the sliding block 21. One end of the cross bar 26 is connected to the fixed block 22. The other end of the cross bar 26 passes through the sliding block 21. The cross bar 26 is located below the adjusting nut 25. The movement of the adjusting nut 25 drives the sliding block 21 to move on the cross bar 26 in the direction of the fixed block 22. The cable under test 7 is fixed between the sliding block 21 and the fixed block 22. A cable channel 27 is formed between the cable sliding block 21 and the fixed block 22. The cable under test 7 is located in the cable channel 27. The infrared temperature measurement bracket 5 and the cable under test 7 are at the same horizontal height, so that the infrared temperature sensors 6 on the infrared temperature measurement bracket 5 and the cable under test 7 are at the same horizontal height, making the temperature detection result more accurate. The voltage connector 4 is connected to the tester through a voltage wire. The current connector 3 is connected to the tester through a current wire. The infrared temperature sensor 6 and the infrared temperature collector are connected through a signal wire. In this embodiment, for the convenience of drawing, the tester, the infrared temperature collector, and the signal processing system placed on the ground of the detection environment are not shown in the figure.

[0032] In this embodiment, the number of infrared temperature sensors 6 is set according to actual requirements. In this embodiment, the number of infrared temperature sensors 6 is three, and the infrared temperature sensors 6 are arranged on the infrared temperature measuring bracket 5 at equal intervals. The infrared temperature sensors 6 are movably arranged on the infrared temperature measuring bracket 5, and the signal processing system is a computer terminal including a display device and a processing device.

[0033] The detection process is as follows: The tester measures the resistance value of the cable 7 to be measured through the voltage connector 4 and the current connector 3, and the tester sends the resistance value to the signal processing system. The infrared temperature collector obtains the temperature values of the cable 7 to be measured sent by different infrared temperature sensors 6 and sends them to the signal processing system. The signal processing system calculates the average temperature value of the cable 7 to be measured based on all the temperature values of the cable 7 to be measured, and the signal processing system performs conversion of the resistance value per unit length at the standard temperature according to the resistance value and the average temperature value of the cable 7 to be measured.

[0034] This embodiment also provides a method for detecting the direct current resistance of a conductor based on infrared temperature measurement. This method is applied to the above-mentioned device for detecting the direct current resistance of a conductor based on infrared temperature measurement, and specifically includes the following steps:

[0035] Clamp both ends of the cable to be measured on the clamping components respectively;

[0036] The tester measures the resistance value of the cable to be measured through the voltage connector and the current connector, and the tester sends the resistance value to the signal processing system;

[0037] The infrared temperature collector obtains the temperature values of the cable to be measured sent by different infrared temperature sensors, and the infrared temperature collector sends all the temperature values of the cable to be measured to the signal processing system;

[0038] The signal processing system performs conversion of the resistance value per unit length at the standard temperature according to the resistance value and the temperature value of the cable to be measured. In this embodiment, the signal processing system performs conversion of the resistance value per unit length at the standard temperature according to the resistance value and the temperature value of the cable to be measured specifically as follows: The signal processing system calculates the average temperature value of the cable to be measured based on all the temperature values of the cable to be measured, and the signal processing system performs conversion of the resistance value per unit length at the standard temperature according to the resistance value and the average temperature value of the cable to be measured.

[0039] The DC resistance detection device of a conductor based on infrared temperature measurement according to the present application includes a conductor resistance detection device, an infrared temperature measurement device, and a signal processing system. The conductor resistance detection device includes a base, two clamping components, and a tester. The two clamping components are arranged on both sides of the base. Voltage connectors and current connectors are arranged on both sides of the base. The voltage connector and the current connector are respectively connected to the tester. The infrared temperature measurement device includes an infrared temperature collector, a plurality of infrared temperature sensors, and an infrared temperature measurement bracket. The infrared temperature measurement bracket is fixed on the base. The infrared temperature measurement bracket is located on one side of the clamping component. The infrared temperature sensors are arranged on the infrared temperature measurement bracket. The infrared temperature sensors are connected to the infrared temperature collector. The infrared temperature collector and the tester are both communicatively connected to the signal processing system. Both ends of the cable under test are respectively clamped on the clamping components. The cable under test is electrically connected to the voltage connector and the current connector. The infrared temperature collector obtains the temperature values of the cable under test at different positions detected by the plurality of infrared temperature sensors. The tester detects the resistance value of the cable under test. The signal processing system calculates the average temperature value of the cable under test according to the temperature values of the cable under test at multiple positions, and then performs conversion of the resistance value per unit length at the standard temperature according to the resistance value and the average temperature value of the cable under test. The entire detection process realizes intelligent detection and data processing, without manual operation, saving labor costs. Moreover, the temperature of the cable conductor can be directly measured by the infrared temperature sensors, reducing the error caused by indirectly reflecting the conductor temperature by measuring the ambient temperature. By setting a plurality of infrared temperature sensors to collect the temperatures at multiple positions of the cable under test and taking the average value, the temperature is more representative and the measurement result is more accurate.

[0040] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any ordinary technician in the industry can smoothly implement the present invention according to the illustrations in the specification and the above. However, any equivalent changes such as slight modifications, decorations, and evolutions made by those skilled in the art within the scope of the technical solution of the present invention by using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A conductor DC resistance detection device based on infrared temperature measurement, characterized in that: It includes a conductor resistance detection device, an infrared temperature measurement device and a signal processing system. The conductor resistance detection device includes a base, two clamping components and a tester. The two clamping components are arranged on both sides of the base. Voltage connectors and current connectors are arranged on both sides of the base. The voltage connector and the current connector are respectively connected to the tester. The infrared temperature measurement device includes an infrared temperature collector, several infrared temperature sensors and an infrared temperature measurement bracket. The infrared temperature measurement bracket is fixed on the base. The infrared temperature measurement bracket is located on one side of the clamping component. The infrared temperature sensors are arranged on the infrared temperature measurement bracket. The infrared temperature sensors are connected to the infrared temperature collector. The infrared temperature collector and the tester are both communicatively connected to the signal processing system. The infrared temperature collector and the tester are both placed on one side of the base; The tester measures the resistance value of the cable under test through the voltage connector and the current connector, and the tester sends the resistance value to the signal processing system. The infrared temperature collector obtains the temperature values of the cable under test sent by different infrared temperature sensors and sends them to the signal processing system. The signal processing system calculates the average temperature value of the cable under test based on all the temperature values of the cable under test. The signal processing system performs conversion of the resistance value per unit length at the standard temperature based on the resistance value and the average temperature value of the cable under test; The clamping component includes a sliding block, a fixed block, a cross bar, an adjusting nut and a fixture bottom plate. The fixture bottom plate is fixed on one side of the base. The fixed block is fixed on the fixture bottom plate. The sliding block is movably fixed on the fixture bottom plate. The adjusting nut passes through the fixed block and the sliding block respectively. The adjusting nut is threadedly connected to the sliding block. One end of the cross bar is connected to the fixed block. The other end of the cross bar passes through the sliding block. The cross bar is located below the adjusting nut. The movement of the adjusting nut drives the sliding block to move on the cross bar towards the direction where the fixed block is located. The cable under test is fixed between the sliding block and the fixed block; A cable channel is formed between the sliding block and the fixed block of the cable, and the cable under test is located in the cable channel; The infrared temperature sensor and the cable under test are at the same horizontal height; The voltage connector and the tester are connected by a voltage wire. The current connector and the tester are connected by a current wire. The infrared temperature sensor and the infrared temperature collector are connected by a signal wire.

2. The conductor DC resistance detection device based on infrared temperature measurement according to claim 1, wherein: The number of the infrared temperature sensors is three, and the infrared temperature sensors are arranged on the infrared temperature measurement bracket at equal intervals.

3. The conductor DC resistance detection device based on infrared temperature measurement according to claim 1, characterized in that: The infrared temperature sensor is movably arranged on the infrared temperature measurement bracket.

4. The direct current resistance detection device of a conductor based on infrared temperature measurement according to claim 1, characterized in that: The signal processing system is a computer terminal containing a display device and a processing device.

5. A method for detecting the DC resistance of a conductor based on infrared temperature measurement, the method being applied to the device for detecting the DC resistance of a conductor based on infrared temperature measurement according to any one of claims 1-4, characterized in that: It includes the following steps: Clamp both ends of the cable under test on the clamping component; The tester measures the resistance value of the cable under test through the voltage connector and the current connector, and the tester sends the resistance value to the signal processing system; The infrared temperature collector obtains the temperature values of the measured cables sent by different infrared temperature sensors, and the infrared temperature collector sends all the temperature values of the measured cables to the signal processing system; The signal processing system performs the conversion of the resistance value per unit length at the standard temperature based on the resistance value and the temperature value of the measured cable.

6. The method for detecting the DC resistance of a conductor based on infrared temperature measurement according to claim 5, characterized in that: The specific conversion of the resistance value per unit length at the standard temperature by the signal processing system based on the resistance value and the temperature value of the measured cable is as follows: The signal processing system calculates the average temperature of the measured cables based on all the temperature values of the measured cables, and the signal processing system performs the conversion of the resistance value per unit length at the standard temperature based on the resistance value and the average temperature of the measured cables.

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