Electrical test device, method and system

Abstract

The present invention proposes an electrical test device, method and system, the electrical test device includes: a chassis, a wiring probe module, a drive module, an electrical performance tester, a switch control module and a host computer; a grounding pin is provided on the test station of the chassis; the drive module is used to drive the wiring probe module; the wiring probe module is located below the drive module, and is used to realize the electrical connection between the terminal device under test and the electrical performance tester; the electrical performance tester is used to perform safety tests on the terminal device under test; the host computer is used to control the electrical performance tester and the drive module to realize human-computer interaction. The electrical test device, method and system proposed by the present invention replace the manual wiring in the traditional technology, automatically assist the wiring, improve the test efficiency, reduce the labor cost, reduce the manual operation errors, and ensure the safety and reliability of the test process; there are two selection modes of manual and automatic at startup.

Description

Technical Field

[0001] The present invention relates to the field of electrical testing, and in particular to an electrical testing device, method and system. Background Art

[0002] With the advancement of science and technology, the product replacement cycle has been significantly shortened, and the market's requirements for product quality have also increased, especially in the power industry. The demand for electricity continues to grow, the complexity and load intensity of the power system have increased significantly, and the requirements for power quality and power safety have become more stringent. In order to achieve real-time monitoring and precise control of the operating status of the power grid, power data acquisition equipment, as the core component of power grid monitoring, its performance and quality are directly related to the stability and safety of the power system. Therefore, the power industry has put forward higher requirements for the safety performance of data acquisition equipment to ensure that it can still operate stably in harsh environments.

[0003] However, whether for R&D or small-batch production products, or mass-produced products, traditional electrical safety performance testing methods are highly dependent on manual operation. Manual wiring, as a key link in the traditional testing process, exposes many problems: it is not only time-consuming and labor-intensive, increasing the test cycle and labor costs, but also prone to operating errors that lead to safety hazards such as incorrect wiring, false connections, and even sparks, which in turn affects the accuracy of safety test results and the reliability of the equipment, and may also cause damage to the tester itself.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely explaining the technical solutions of the present application and facilitating the understanding of those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are explained in the background technology section of the present application.

[0005] In view of the above, there is an urgent need to provide an electrical test device, method and system to solve the above problems. Summary of the invention

[0006] In view of the problems in the related art, the present invention proposes an electrical test device, method and system to overcome the technical problems existing in the existing related art.

[0007] To achieve the above-mentioned purpose and other related purposes, the present invention provides an electrical test device, which comprises: a chassis, a wiring probe module, a drive module, an electrical performance tester, a switch control module and a host computer; A wiring connection compartment is provided inside the chassis for placing cables, and a grounding pin with a spring inside is provided on the test station on the upper surface of the chassis for grounding the terminal device under test placed at the test station; The driving module is vertically arranged on the upper surface of the chassis, and is used to drive the wiring probe module to approach or move away from the test station; The wiring probe module is located below the driving module and is used to realize the electrical connection between the terminal device under test and the electrical performance tester. The wiring probe module includes: A pressure plate, arranged on the lower surface of the active end of the driving module; A fixing plate is detachably arranged on the lower surface of the pressing plate, and a plurality of probes with springs inside are arranged on the fixing plate, and both upper and lower ends of the probes extend from the surface of the fixing plate, and the lower ends of the probes are used to plug into the wiring terminals on the terminal device under test, and the upper ends are electrically connected to the electrical performance tester through cables; The electrical performance tester is used to perform safety tests on the terminal equipment under test; A switch control module, including a shunt control switch and a drive switch, both of which are arranged on the surface of the chassis. The shunt control switch is used to control the electrical on / off of the wired probe module and the electrical performance tester. One end of the shunt control switch is connected to the cable on the wiring probe module, and the other end is connected to the electrical performance tester. The drive switch is used to control the electrical on / off of the drive module. The host computer is electrically connected to the electrical performance tester, the drive module and the wiring probe module respectively, and is used to control the electrical performance tester and the drive module to achieve human-computer interaction.

[0008] Optionally, the wiring probe module specifically includes: An insulating pressing plate is provided with fixing holes and a probe through slot; A high-voltage probe module is arranged below the insulating pressure plate, and comprises a first insulating fixing plate, on which a first fixing member and regularly arranged high-voltage probes are arranged, the first fixing member is fixed to the insulating pressure plate through the fixing hole, and the high-voltage probes are exposed through the probe through-slot; And / or, a low-current probe module is arranged below the insulating pressure plate, and is offset from the high-current probe module in the directions perpendicular and parallel to the upper surface of the chassis, and includes a second insulating fixing plate, on which a second fixing piece and regularly arranged low-current probes are provided, and the second fixing piece is fixed to the insulating pressure plate through the fixing hole, and the low-current probe is not blocked by the insulating pressure plate.

[0009] Optionally, the electrical performance tester includes one or a combination of two of an AC / DC safety tester, a high-frequency impulse voltage tester, etc.

[0010] Optionally, the driving module includes: A support plate, vertically arranged at the rear end of the upper surface of the chassis; A cylinder, used for providing a driving force for the wiring probe module to approach or move away from the test station, is arranged on the surface of the support plate, and the cylinder is provided with a connecting rod in a direction perpendicular to the upper surface of the chassis; The push plate is arranged at the bottom of the connecting rod, and the pressure plate is fixedly connected to the lower surface thereof.

[0011] Optionally, the driving module further includes: A limit rod is arranged on both sides of the cylinder in a direction perpendicular to the upper surface of the chassis, one end of which is fixed to the support plate through a fixed support plate, and the other end of which is fixed to the upper surface of the chassis; The limiting member is arranged on the pressure plate and is in clearance fit with the limiting rod. The pressure plate can move along the limiting rod in a vertical direction on the upper surface of the chassis through the limiting member.

[0012] Optionally, the electrical test device further comprises: A positioning groove is provided on the upper surface of the chassis, and the test station is located in the positioning groove; Alternatively, a positioning tool is adjustably arranged on the periphery of the test station on the upper surface of the chassis, and is used to position and fasten the terminal device under test during testing.

[0013] Optionally, the terminal device under test is any one of the electricity metering and collection terminal devices such as a concentrator, an energy meter, an energy controller, and an SCU.

[0014] Optionally, the electrical test device further comprises: A handle is arranged on the side of the chassis to facilitate the transportation of the electrical test device.

[0015] The present invention provides an electrical test method, the electrical test method comprising: S1: Place the terminal device under test into the test station on the chassis; S2: The driving module drives the wiring probe module to approach the test station in a direction perpendicular to the upper surface of the chassis until the probe is plugged into the wiring terminal on the terminal device under test; S3: Set the safety test parameters according to actual needs; S4: When the terminal device under test is in the R&D or small batch production stage, the safety test is manually performed on the terminal device under test through the switch control module, or, when the terminal device under test is in the mass production stage, the safety test is automatically performed on the terminal device under test through the host computer; S5: The electrical performance tester performs the required safety test on the terminal equipment under test according to the set parameters; S6: If the safety test is qualified, the test result is output; if it is unqualified, return to step S4 to step S5 and re-test.

[0016] The present invention provides an electrical test system, the electrical test system comprising: Safety test module, used to perform safety test on the terminal equipment under test; Auxiliary wiring module, used to electrically connect the terminal device under test with the safety test module; Manual module, used to manually perform safety tests on the terminal equipment under test; Automatic module, used to automatically perform safety tests on the terminal equipment under test.

[0017] As described above, an electrical test device, method and system of the present invention have the following beneficial effects: The present invention proposes an electrical test device, method and system, which can drive the probes in the wiring probe module through a driving module to directly plug into the wiring terminals on the terminal device under test, replace the manual wiring in the traditional technology, automatically assist the wiring, improve the test efficiency, reduce the labor cost, reduce the damage to the terminal device under test caused by manual operation errors, reduce the result errors and damage to the electrical performance tester body caused by false connection, sparking, etc., and ensure the safety and reliability of the test process; the detachable wiring probe module can be compatible with all versions of terminal devices currently on the market, and can be connected to them, and can be connected to the electrical performance testers of existing well-known manufacturers; the electrical test device of the present invention has two selection modes when starting: the first is manual, and different safety performance tests are achieved through the switch control module. This mode is suitable for the research and development or small batch production stage of the terminal device; the second is automatic, and the electrical performance tester, the driving module and the wiring probe module are controlled by the upper computer to automatically perform different safety performance tests on the terminal device under test. This mode is suitable for the mass production stage of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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 creative work.

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of an electrical test device according to an embodiment of the present invention; Figure 2 is a three-dimensional structure explosion diagram of an electrical test device according to an embodiment of the present invention; Figure 3 is a schematic front view of an electrical test device according to an embodiment of the present invention; Figure 4is a schematic top view of an electrical test device according to an embodiment of the present invention; Figure 5 It is a side view schematic diagram of an electrical test device according to an embodiment of the present invention.

[0020] In the figure: 10. Chassis; 11. Wiring connection compartment; 12. Test station; 13. Grounding pin; 20. Drive module; 21. Support plate; 22. Cylinder; 221. Connecting rod; 23. Push plate; 24. Limit rod; 25. Fixed support plate; 26. Limit member; 30. Wiring probe module; 31. Insulating pressure plate; 311. Fixing hole; 312. Probe slot; 32. High-voltage probe module; 321. First insulating fixing plate; 322. First fixing member; 323. High-voltage probe; 33. Low-voltage probe module; 331. Second insulating fixing plate; 332. Second fixing member; 333. Low-voltage probe; 41. Branch control switch; 42. Drive switch; 50. Positioning tooling; 51. Positioning member; 60. Handle. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0022] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0024] like Figures 1 to 5As shown, this embodiment provides an electrical test device, which includes: a chassis 10, a wiring probe module 30, a driving module 20, an electrical performance tester (not shown in the figure), a switch control module and a host computer (not shown in the figure); a grounding pin 13 with a spring inside is provided on the test station 12 on the upper surface of the chassis 10, which is used to ground the terminal device under test placed on the test station 12, and the function of the spring on the grounding pin 13 is to buffer the terminal device under test when it is placed on the test station 12 to avoid damage to the shell of the terminal device under test; the driving module 20 is vertically arranged on the upper surface of the chassis 10, and is used to drive the wiring probe module 30 to approach or move away from the test station 12, that is, in the working state, drive the wiring probe module 30 to approach or move away from the terminal device under test on the test station 12; the wiring probe module 30 is located below the driving module 20, and is used to realize the electrical connection between the terminal device under test and the electrical performance tester, and the wiring probe module 30 includes: a pressing plate, a fixing plate and a probe, and the pressing plate is arranged at the active end of the driving module 20 the lower surface of the pressure plate; the fixing plate is detachably arranged on the lower surface of the pressure plate, and a plurality of probes with springs therein are arranged on the fixing plate, and the upper and lower ends of the probes extend from the surface of the fixing plate, the lower end of the probe is used to plug into the wiring terminal on the terminal device under test, and the upper end is electrically connected to the electrical performance tester through a cable, and the function of the spring in the probe is to provide buffering when the probe is plugged into the wiring terminal of the terminal device under test to avoid damage to the wiring terminal of the terminal device under test; the electrical performance tester is used to perform safety testing on the terminal device under test; the switch control module includes a shunt control switch 41 and a drive switch 42, both of which are arranged on the surface of the chassis 10, the shunt control switch 41 is used to control the electrical on-off of the wiring probe module 30 and the electrical performance tester, one end of which is connected to the cable on the wiring probe module 30, and the other end is connected to the electrical performance tester, and the drive switch 42 is used to control the electrical on-off of the drive module 20; the host computer is electrically connected to the electrical performance tester, the drive module 20 and the wiring probe module 30 respectively, and is used to control the electrical performance tester and the drive module 20 to achieve human-computer interaction.

[0025] The electrical test device of this embodiment drives the probes in the wiring probe module 30 through the driving module 20 to directly plug into the wiring terminals on the terminal device under test, replacing the manual wiring in traditional technology and automatically assisting the wiring, thereby improving the test efficiency, reducing the labor cost, and reducing the damage to the terminal device under test caused by manual operation errors, the error in the results caused by false connection, sparking, etc. and the damage to the electrical performance tester body, and ensuring the safety and reliability of the test process; the detachable wiring probe module 30 can be compatible with all existing versions of terminal devices on the market, and can be connected to them, and can be connected to the electrical performance testers of existing well-known manufacturers.

[0026] In addition, the electrical test device of this embodiment has two selection modes when it is started: the first is manual, which realizes different safety performance tests through the switch control module. This mode is suitable for the research and development or small batch production stage of terminal equipment; the second is automatic, which controls the electrical performance tester, the drive module 20 and the wiring probe module 30 through the host computer to automatically perform different safety performance tests on the terminal equipment under test. This mode is suitable for the mass production stage of terminal equipment.

[0027] It should be noted here that the electrical performance tester involves multiple test functions, and different functions have high-voltage ends and low-voltage ends, which correspond to the strong-current terminals and weak-current terminals of the terminal device under test. The shunt control switch 41 is also used to control the electrical connection and disconnection between the different test functions of the electrical performance tester and the different terminal circuits of the terminal device under test.

[0028] In this embodiment, when a switch control module is used, a shunt control switch 41 of the switch control module is arranged on the front surface of the chassis 10, and a drive switch 42 is arranged on the upper surface of the chassis 10. Corresponding to the drive module 20, a plurality of shunt control switches 41 are arranged, and each shunt control switch 41 corresponds to an electrical safety test, for example: power supply circuit test, AC power input circuit test, output circuit ground test, electrical isolation circuit test, etc. The test results can be viewed according to the interface of the connected electrical performance tester; when a host computer is used, the host computer controls the solenoid valve through the PLC circuit to control the start of the drive module 20. When the host computer sends a signal to the drive module 20, the control between each circuit is controlled by closing the control relay, and different electrical safety tests are performed on the terminal equipment under test, and then the test results are fed back to the host computer.

[0029] In a specific example that can be implemented, the terminal device under test is any one of the electricity metering and collection terminal devices such as concentrators, power meters, energy controllers, SCUs, etc. The probes in the wiring probe module 30 can be set in size, quantity and arrangement according to the actual wiring terminals of the terminal device under test, and no specific restrictions are made here.

[0030] like Figures 1 to 5As shown, in a specific example that can be implemented, taking the terminal device under test as a concentrator as an example, a wiring probe module 30 is specifically described, which includes: an insulating pressure plate 31, a strong current probe module 32 and / or a weak current probe module 33, the insulating pressure plate 31 is provided with a fixing hole 311 and a probe through groove 312; the strong current probe module 32 is detachably arranged under the insulating pressure plate 31, and the strong current probe module 32 includes a first insulating fixing plate 321, and the first insulating fixing plate 321 is provided with a first fixing member 322 and regularly arranged strong current probes 323, the first fixing member 322 is fixed to the insulating pressure plate 31 through the fixing hole 311, and the strong current probe 323 is exposed through the probe through groove 312; The weak-current probe module 33 is detachably arranged below the insulating platen 31, and is offset from the strong-current probe module 32 in the directions perpendicular and parallel to the upper surface of the chassis 10. The weak-current probe module 33 includes a second insulating fixing plate 331. Specifically, the second insulating fixing plate 331 is C-shaped so as to avoid the first insulating fixing plate 321 and connect with the insulating platen 31. A second fixing member 332 and regularly arranged weak-current probes 333 are provided on the second insulating fixing plate 331. The second fixing member 332 is fixed to the insulating platen 31 through a fixing hole 311. The weak-current probe 333 is not blocked by the insulating platen 31. Specifically, the weak-current probe 333 leaks out from the side of the insulating platen 31.

[0031] In this embodiment, the lowest points of the strong current probe 323 and the weak current probe 333 have a height difference, corresponding to the high voltage terminal and the low voltage terminal of the concentrator.

[0032] In other specific examples, the wiring probe module 30 may include only a high-current probe module 32, only a low-current probe module 33, or both a high-current probe module 32 and a low-current probe module 33. The wiring probe module 30 can be disassembled and installed by the first fixing member 322 and / or the second fixing member 332 to adapt to different types of terminal devices under test. The wiring probe module 30 can be arranged into different layouts according to the wiring terminals of the terminal device under test, and no specific restrictions are made here.

[0033] It should be noted that the insulating plate 31, the first insulating fixing plate 321 and the second insulating fixing plate 331 are insulated to prevent the leakage or short circuit of the current through the components beside the strong current probe 323 and the weak current probe 333 when they are working, so that the test signal is transmitted only through the probe, avoiding accidental electric shock and damage to the device body, thereby ensuring the safety, accuracy and reliability of the device. The strong current probe 323 and the weak current probe 333 are not blocked by the insulating plate 31 to facilitate the electrical connection of their upper ends with the electrical performance tester through cables.

[0034] In order to facilitate the routing of the cables on the wiring probe module 30 when they are electrically connected to the electrical performance tester, Figures 1 to 5As shown, in a specific example that can be implemented, a wiring connection compartment 11 is provided inside the chassis 10 for placing the cables in the wiring probe module 30 and the wiring terminals of different functions of the electrical performance tester. An opening (not shown in the figure) is provided on the upper surface of the chassis 10 between the test station 12 and the drive module 20 to facilitate the cable at the upper end of the probe to enter the wiring connection compartment 11. An opening (not shown in the figure) is also provided on the rear surface of the chassis 10 to facilitate the cable of the electrical performance tester to enter the wiring connection compartment 11. It should be noted here that the grounding pin 13 is also grounded through the wiring connection compartment 11 to save space.

[0035] In a specific example that can be implemented, the electrical performance tester includes one or a combination of two of an AC / DC safety tester, a high-frequency impulse voltage tester, etc., and other types of testers can also be set according to actual needs, without specific restrictions here. The electrical performance tester can perform DC withstand voltage test, AC withstand voltage test, insulation resistance test, leakage current test, ground resistance test, ground resistance test, as well as operation overvoltage test, insulation strength test, residual voltage test, impulse voltage test, etc. on the terminal equipment under test, and corresponding test selection can be made according to needs.

[0036] In this embodiment, preferably, insulation resistance, insulation strength and impulse voltage tests are performed on the terminal device under test, including the DC power supply circuit-ground, AC power supply-ground, signal input and output-ground, control input and output-ground, between voltage and current input circuits, between power supply and status input circuits, between power supply and control output circuits, between power supply and current input circuits, and between circuits without electrical connection at the terminal.

[0037] Specifically, during normal operation, the terminal equipment must not only withstand the long-term action of the rated voltage, but also withstand various overvoltages (such as power frequency overvoltage, lightning overvoltage, and operating overvoltage). In order to assess the ability of the equipment to withstand overvoltage, various overvoltages are artificially simulated. This is the so-called insulation strength test, also known as the withstand voltage test. The AC withstand voltage output range is: 100V~5000V AC / 100mA (duration 1~30 minutes), and the DC withstand voltage output range is: 100V~8000V DC / 10mA (duration 1~30 minutes). Insulation resistance refers to the resistance value that appears when a voltage is applied to the insulating part of the connector, and then a leakage current occurs inside or on the surface of the insulating part. Insulation resistance is the most basic insulation indicator of electrical equipment and electrical lines, and the insulation resistance measurement range is: 1~9999MΩ. Impulse voltage refers to a voltage with a very short action time, such as lightning impulse voltage or operating impulse voltage. It can generate huge current energy in an instant. The impulse voltage test is used to verify whether the electrical gap can withstand the specified instantaneous overvoltage. It can be used to determine the insulation performance of power equipment when it is subjected to atmospheric overvoltage (lightning strike), and it can also be used to determine the insulation performance of power equipment when it is subjected to operating overvoltage. The standard waveform of the impulse voltage is 1.2 / 50μs, which simulates the lightning discharge voltage caused by lightning discharge. The output voltage range is 0~10kV, and the voltage polarity is positive or negative.

[0038] In order to achieve the wiring probe module 30 close to or away from the test station 12, electrical safety test is performed, such as Figures 1 to 5 As shown, in a specific example that can be implemented, the driving module 20 includes: a support plate 21, a cylinder 22 and a push plate 23, the support plate 21 is vertically arranged at the rear end of the upper surface of the chassis 10; the cylinder 22 is used to provide a driving force for the wiring probe module 30 to approach or move away from the test station 12, and is arranged on the surface of the support plate 21, and the cylinder 22 is provided with a connecting rod 221 in a direction perpendicular to the upper surface of the chassis 10, which is its movable end; the push plate 23 is arranged at the bottom of the connecting rod 221, and the pressure plate is fixedly connected to the lower surface of the push plate 23, and is preferably an insulating pressure plate 31.

[0039] Furthermore, the driving module 20 also includes: a limit rod 24 and a limit member 26. The limit rod 24 is arranged on both sides of the cylinder 22 along a direction perpendicular to the upper surface of the chassis 10, one end of which is fixed to the support plate 21 through a fixed support plate 25, and the other end is fixed to the upper surface of the chassis 10; the limit member 26 is arranged on the pressure plate, and is loosely matched with the limit rod 24. The pressure plate can be moved along the limit rod 24 in the vertical direction of the upper surface of the chassis 10 through the limit member 26 to limit the wiring probe module 30 when it approaches or moves away from the test station 12, so that the probe can be accurately plugged into the wiring terminal of the terminal device under test.

[0040] In order to fix the terminal device under test during the electrical safety performance test and ensure that the probe is accurately plugged into the wiring terminal of the terminal device under test, in a specific example that can be implemented, the electrical test device also includes a positioning groove, and the limit groove is arranged on the upper surface of the chassis 10. The test station 12 is located in the positioning groove. The size and dimensions of the positioning groove can be set according to the size of the terminal device under test, and there is no limitation here.

[0041] like Figures 1 to 5 As shown, in a specific example that can be implemented, the electrical test device also includes a positioning fixture 50, which is adjustably arranged on the side of the test station 12 on the upper surface of the chassis 10, and is used to position and tighten the terminal device under test during the test. The positioning fixture 50 includes four positioning members 51, and the positioning members 51 are adjusted by bolts and the upper surface of the chassis 10 to adapt to terminal devices under test of different types and sizes.

[0042] like Figures 1 to 5 As shown, in a specific implementable example, the electrical test device also includes: a handle 60, which is arranged on the side of the chassis 10 to facilitate the transportation of the electrical test device. Preferably, two handles 60 are symmetrically arranged on the left and right sides of the chassis 10 to facilitate manual or robotic transportation, saving time and effort. Example 2

[0043] This embodiment provides an electrical test method, which is implemented by the electrical test device in the first embodiment. The electrical test method includes: S1: placing the terminal device under test into the test station 12 on the chassis 10; S2: The driving module 20 drives the wiring probe module 30 to approach the test station 12 along a direction perpendicular to the upper surface of the chassis 10 until the probe is plugged into the wiring terminal on the terminal device under test; S3: Set the safety test parameters according to actual needs; S4: When the terminal device under test is in the R&D or small batch production stage, the safety test is manually performed on the terminal device under test through the switch control module, or, when the terminal device under test is in the mass production stage, the safety test is automatically performed on the terminal device under test through the host computer; S5: The electrical performance tester performs the required safety test on the terminal equipment under test according to the set parameters; S6: If the safety test is qualified, the test result is output; if it is unqualified, return to step S4 to step S5 and re-test.

[0044] Taking the insulation strength test of the concentrator as an example, referring to the provisions in the documents "GB / T 16935.1-2008 Insulation coordination of equipment in low-voltage systems Part 1 Principles, requirements and tests", "Q / GDW 10374.2-2019 Technical specifications for power consumption information collection system Part 2: Centralized meter reading terminal", and "General Technical Specifications for Concentrators 2022", the specific methods are as follows: The concentrator is placed in the test station 12 on the chassis 10, with the wiring terminals of the terminal device under test facing the wiring probe module 30. The concentrator is positioned and fastened by the positioning fixture 50 where the test station 12 is located. The grounding pin 13 contacts the outer shell of the concentrator, and the spring inside the grounding pin 13 provides buffering during contact.

[0045] When the concentrator is in the R&D or small batch production stage, turn on the main power of the electrical performance tester, and manually set the parameters required for the insulation strength test on the electrical performance tester, such as 2.5kv, 50Hz AC voltage, and a test plan lasting 1min. Manually turn on the drive switch 42, the cylinder 22 of the drive module 20 starts, and the cylinder 22 drives the push plate 23 and the insulating pressure plate 31 to descend in sequence through the connecting rod 221, that is, close to the concentrator, and the limiter 26 on the insulating pressure plate 31 descends according to the limiter rod 24 to avoid displacement. Next, the strong current probe module 32 and the weak current probe module 33 under the insulating pressure plate 31 move downward, and the strong current probe 323 and the weak current probe 333 are respectively plugged into the wiring terminals of the concentrator, and the springs in the probes are buffered during plugging. Manually turn on the shunt control switch 41, which controls the control between the strong and weak current circuit groups connected to it. The electrical performance tester performs an insulation strength test on the concentrator and triggers the output of the corresponding voltage level. After the test, view the test results from the display interface of the electrical performance tester. If other tests are required, continue to manually set the parameters required for other tests on the electrical performance tester, turn on the shunt control switch 41, and continue the test until the end. Manually close the shunt control switch 41 and the drive switch 42 respectively, and the drive module 20 drives the wiring probe module 30 to rise, that is, away from the concentrator, and the strong current probe 323 and the weak current probe 333 are respectively pulled out from the wiring terminals of the concentrator.

[0046] When the concentrator is in the mass production stage, turn on the total power of the electrical performance tester, connect the electrical performance tester and the drive module 20 through the host computer, and confirm that the electrical performance tester and the drive module 20 communicate normally with the host computer respectively. Select the AC power supply-ground option on the host computer, such as the voltage of 2.5kv, 50Hz AC voltage, and the test plan lasting 1min. The host computer controls the drive module 20 to start, and the cylinder 22 drives the push plate 23 and the insulating pressure plate 31 to descend in turn through the connecting rod 221, that is, close to the concentrator. The limiter 26 on the insulating pressure plate 31 descends according to the limit rod 24 to avoid displacement. Next, the strong current probe module 32 and the weak current probe module 33 under the insulating pressure plate 31 move down, and the strong current probe 323 and the weak current probe 333 are respectively plugged into the wiring terminals of the concentrator. The spring in the probe is buffered when plugged in. And the electrical performance tester is triggered synchronously to output the corresponding voltage level. After the test is completed, the test results are viewed from the human-computer interaction interface of the host computer. If other tests are required, continue to set the parameters required for other tests on the host computer and continue the test until the end. Operate the host computer to control the driving strong current probe 323 and weak current probe 333 of the driving module 20 to be pulled out from the wiring terminals of the concentrator respectively, and turn off the power of the electrical performance tester and the driving module 20 in turn.

[0047] During the monitoring test, check whether there is breakdown or flashover. Refer to GB / T 16935.1-2008 Insulation coordination of equipment in low voltage systems Part 1 Principles, requirements and tests. The leakage current should not exceed 5mA and meet the technical requirements of General Technical Specifications for Concentrators 2022. If qualified, the test results are output. If not, retest. Example 3

[0048] The present embodiment provides an electrical test system, which acts on the electrical test device of embodiment 1. The electrical test system includes: a safety test module, an auxiliary wiring module, a manual module, and an automatic module; the safety test module is used to perform electrical safety performance tests on the terminal device under test; the auxiliary wiring module is used to electrically connect the terminal device under test with the electrical safety performance test module; the manual module is used to manually perform electrical safety performance tests on the terminal device under test; and the automatic module is used to automatically perform electrical safety performance tests on the terminal device under test.

[0049] In summary, the present invention proposes an electrical test device, method and system, the electrical test device comprising: a chassis 10, a wiring probe module 30, a drive module 20, an electrical performance tester, a switch control module and a host computer; a wiring connection compartment 11 is provided inside the chassis 10 for placing cables, and a grounding pin 13 with a spring inside is provided on a test station 12 on the upper surface of the chassis 10 for grounding a terminal device under test placed at the test station 12; the drive module 20 is vertically arranged on the upper surface of the chassis 10 for driving the wiring probe module 30 to approach or move away from the test station 12; the wiring probe module 30 is located below the drive module 20 for realizing electrical connection between the terminal device under test and the electrical performance tester, the wiring probe module 30 comprises: a pressing plate, a fixing plate and a probe, the pressing plate is arranged on the lower surface of the active end of the drive module 20; the fixing plate is detachably arranged On the lower surface of the pressure plate, a plurality of probes with springs inside are arranged on the fixed plate, and the upper and lower ends of the probes extend from the surface of the fixed plate. The lower end of the probe is used to plug into the wiring terminals on the terminal device under test, and the upper end is electrically connected to the electrical performance tester through a cable; the electrical performance tester is used to perform safety tests on the terminal device under test; the switch control module includes a shunt control switch 41 and a drive switch 42, both of which are arranged on the surface of the chassis 10, and the shunt control switch 41 is used to control the electrical on-off of the wired probe module 30 and the electrical performance tester, one end of which is connected to the cable on the wiring probe module 30, and the other end is connected to the electrical performance tester, and the drive switch 42 is used to control the electrical on-off of the drive module 20; the host computer is electrically connected to the electrical performance tester, the drive module 20 and the wiring probe module 30 respectively, and is used to control the electrical performance tester and the drive module 20 to realize human-computer interaction. The electrical test device, method and system proposed by the present invention can directly plug the wiring terminals on the tested terminal device through the driving module 20 to drive the probe in the wiring probe module 30, replace the manual wiring in the traditional technology, automatically assist the wiring, improve the test efficiency, reduce the labor cost, reduce the damage of the tested terminal device caused by manual operation errors, and reduce the result errors and damage to the electrical performance tester body caused by virtual connection, sparking, etc., and ensure the safety and reliability of the test process; the detachable wiring probe module 30 can be compatible with all versions of terminal devices on the market, and can be connected with them, and can be connected with the electrical performance tester of the existing well-known manufacturers; the electrical test device of the present invention has two selection modes when starting: the first is manual, and different safety performance tests are realized by the switch control module. This mode is suitable for the research and development or small batch production stage of the terminal device, and the second is automatic, through the host computer to control the electrical performance tester, the driving module 20 and the wiring probe module 30, automatically perform different safety performance tests on the tested terminal device, and this mode is suitable for the mass production stage of the terminal device. Therefore, the present invention effectively overcomes certain shortcomings in the prior art and has a high industrial utilization value.

[0050] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An electrical test device, characterized in that: The electrical test device comprises: a chassis (10), a wiring probe module (30), a drive module (20), an electrical performance tester, a switch control module and a host computer; A wiring connection compartment (11) is provided inside the chassis (10) for placing cables, and a grounding pin (13) with a spring inside is provided on a test station (12) on the upper surface of the chassis (10) for grounding a terminal device under test placed on the test station (12); The driving module (20) is vertically arranged on the upper surface of the chassis (10) and is used to drive the wiring probe module (30) to approach or move away from the testing station (12); The wiring probe module (30) is located below the driving module (20) and is used to realize electrical connection between the terminal device under test and the electrical performance tester. The wiring probe module (30) comprises: A pressure plate, arranged on the lower surface of the movable end of the driving module (20); A fixing plate is detachably arranged on the lower surface of the pressing plate, and a plurality of probes with springs inside are arranged on the fixing plate, and both upper and lower ends of the probes extend from the surface of the fixing plate, and the lower ends of the probes are used to plug into the wiring terminals on the terminal device under test, and the upper ends are electrically connected to the electrical performance tester through cables; The electrical performance tester is used to perform safety tests on the terminal equipment under test; A switch control module, comprising a shunt control switch (41) and a drive switch (42), both of which are arranged on the surface of the chassis (10); the shunt control switch (41) is used to control the electrical on / off of the wired probe module (30) and the electrical performance tester, one end of the shunt control switch (41) is connected to the cable on the wired probe module (30), and the other end is connected to the electrical performance tester; the drive switch (42) is used to control the electrical on / off of the drive module (20); The host computer is electrically connected to the electrical performance tester, the drive module (20) and the wiring probe module (30) respectively, and is used to control the electrical performance tester and the drive module (20) to achieve human-computer interaction.

2. The electrical test device according to claim 1, characterized in that: The wiring probe module (30) specifically comprises: An insulating pressing plate (31) provided with a fixing hole (311) and a probe through slot (312); A high-voltage probe module (32) is arranged below the insulating pressure plate (31), comprising a first insulating fixing plate (321), on which a first fixing member (322) and regularly arranged high-voltage probes (323) are arranged, the first fixing member (322) being fixed to the insulating pressure plate (31) through the fixing hole (311), and the high-voltage probes (323) being exposed through the probe through slot (312); And / or, a weak-current probe module (33) is arranged below the insulating pressure plate (31), and is placed offset from the strong-current probe module (32) in a direction perpendicular to and parallel to the upper surface of the chassis (10), and comprises a second insulating fixing plate (331), on which a second fixing member (332) and regularly arranged weak-current probes (333) are arranged, and the second fixing member (332) is fixed to the insulating pressure plate (31) through the fixing hole (311), and the weak-current probes (333) are not blocked by the insulating pressure plate (31).

3. The electrical test device according to claim 1, characterized in that: The electrical performance tester includes one or a combination of two of an AC / DC safety tester, a high-frequency impulse voltage tester, etc.

4. The electrical test device according to claim 1, characterized in that: The driving module (20) comprises: A support plate (21) vertically arranged at the rear end of the upper surface of the chassis (10); A cylinder (22) for providing a driving force for the wiring probe module (30) to approach or move away from the test station (12), and is disposed on the surface of the support plate (21), wherein the cylinder (22) is provided with a connecting rod (221) in a direction perpendicular to the upper surface of the chassis (10); The push plate (23) is arranged at the bottom of the connecting rod (221), and the pressure plate is fixedly connected to the lower surface thereof.

5. The electrical test device according to claim 4, characterized in that: The driving module (20) further includes: A limit rod (24) is arranged on both sides of the cylinder (22) in a direction perpendicular to the upper surface of the chassis (10), one end of which is fixed to the support plate (21) via a fixed support plate (25), and the other end of which is fixed to the upper surface of the chassis (10); A limiting member (26) is arranged on the pressure plate and is clearance-matched with the limiting rod (24); the pressure plate can move along the limiting rod (24) in a vertical direction on the upper surface of the chassis (10) through the limiting member (26).

6. The electrical test device according to claim 1, characterized in that: The electrical test device also includes: A positioning groove is provided on the upper surface of the chassis (10), and the testing station (12) is located in the positioning groove; Alternatively, the positioning tool (50) is adjustably arranged on the periphery of the test station (12) on the upper surface of the chassis (10) and is used to position and fasten the terminal device under test during testing.

7. The electrical test device according to claim 1, characterized in that: The terminal device under test is any one of the electricity metering and collection terminal devices such as concentrator, energy meter, energy controller, SCU, etc.

8. The electrical test device according to claim 1, characterized in that: The electrical test device also includes: A handle (60) is arranged on the side of the chassis (10) to facilitate the transportation of the electrical test device.

9. An electrical test method, characterized in that: The electrical test method includes: S1: placing the terminal device under test into a test station (12) on the chassis (10); S2: the driving module (20) drives the wiring probe module (30) to approach the test station (12) in a direction perpendicular to the upper surface of the chassis (10) until the probe is plugged into a wiring terminal on the terminal device under test; S3: Set the safety test parameters according to actual needs; S4: When the terminal device under test is in the R&D or small batch production stage, the safety test is manually performed on the terminal device under test through the switch control module, or, when the terminal device under test is in the mass production stage, the safety test is automatically performed on the terminal device under test through the host computer; S5: The electrical performance tester performs the required safety test on the terminal equipment under test according to the set parameters; S6: If the safety test is qualified, the test result is output; if it is unqualified, return to step S4 to step S5 and re-test.

10. An electrical test system, characterized in that: The electrical test system comprises: Safety test module, used to perform safety test on the terminal equipment under test; Auxiliary wiring module, used to electrically connect the terminal device under test with the safety test module; Manual module, used to manually perform safety tests on the terminal equipment under test; Automatic module, used to automatically perform safety tests on the terminal equipment under test.

Images