Interface microcomputer cable insulation testing device
By automating terminal switching and electrically measuring the interface microcomputer cable insulation testing equipment, the problems of frequent terminal errors and long time consumption in traditional manual testing have been solved, and efficient and accurate results have been achieved in the testing of railway signal interface microcomputer cables.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONG STEEL ERSHISANJU GRP DIANWU ENG CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-24
Smart Images
Figure CN224553405U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable testing technology, and in particular to an interface microcomputer cable insulation testing device. Background Technology
[0002] A cable is a conductive material composed of one or more insulated conductors, wrapped in insulating material, used to transmit power, signals, and data between different devices. In train operation, insulation testing of railway signal cables is one of the lifelines ensuring the safety, reliability, and efficiency of railway transportation.
[0003] In the testing of microcomputer cables for railway signal interfaces, due to the narrow spacing between microcomputer plugs, traditional manual testing methods require manual testing of each instrument probe, which often leads to terminal testing errors. This not only consumes a lot of time but also cannot effectively guarantee the accuracy and reliability of the test results. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides an interface microcomputer cable insulation testing device, which aims to solve the problems of traditional manual testing methods, where instrument probes need to be tested manually one by one, and terminal testing errors often occur. This not only consumes a lot of time, but also cannot effectively guarantee the accuracy and reliability of test results.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: an interface microcomputer cable insulation testing device, comprising a housing, a cover on the upper side of the housing, a testing device on one side of the cover, a terminal switching assembly and a microcomputer cable socket inside the housing, the output end of the terminal switching assembly being electrically connected to the common end of the testing device, and multiple wires being fixedly connected to the input end of the terminal switching assembly, the terminal switching assembly being electrically connected to the microcomputer cable socket via the wires, and multiple female terminals being provided inside the microcomputer cable socket, with one end of each of the multiple wires being fixedly connected to one of the multiple female terminals inside the microcomputer cable socket.
[0006] The above technical solution connects the terminal switching component and the microcomputer cable socket electrically via wires, enabling the terminal switching component to switch the circuit formed by multiple wires and the internal female terminals of the microcomputer cable socket. This is achieved through testing with a testing device, thus solving the problems of traditional manual testing methods, where instrument probes need to be tested one by one, often resulting in terminal testing errors. This not only consumes a lot of time but also fails to effectively guarantee the accuracy and reliability of test results.
[0007] As a further description of the above technical solution:
[0008] The terminal switching assembly includes a switch back contact and multiple toggle switches. The common terminal of the test device is electrically connected to one end of the switch back contact, and one end of each of the multiple toggle switches is electrically connected to the other end of the switch back contact. The other ends of the multiple toggle switches are fixedly connected to the other ends of multiple wires one by one.
[0009] The above technical solution involves electrically connecting multiple toggle switches and multiple female terminals inside the microcomputer cable socket via wires, with one end of each toggle switch connected to the back contact of the switch, thereby realizing the function of switching and testing the terminal switching component.
[0010] As a further description of the above technical solution:
[0011] The terminal switching assembly includes a multiplexer, a control circuit, and a rotary encoder. The output of the multiplexer is electrically connected to the common terminal of the test device. The other ends of the multiple wires are fixedly connected to the input of the multiplexer. The control terminal of the multiplexer is electrically connected to one end of the control circuit, and the other end of the control circuit is electrically connected to one end of the rotary encoder.
[0012] The above technical solution achieves the function of switching and testing the terminal switching component by electrically connecting the multiplexer and the microcomputer cable socket with wires, electrically connecting the output terminal of the multiplexer and the common terminal of the test device, and cooperating with the control circuit and the rotary encoder.
[0013] As a further description of the above technical solution:
[0014] The testing device is an electronic megohmmeter.
[0015] The above technical solution utilizes an electronic megohmmeter as the testing device, enabling the equipment to perform electric testing, thereby improving its testing efficiency.
[0016] As a further description of the above technical solution:
[0017] A protective shell is fixedly connected to one side of the microcomputer cable socket, and the outer walls of multiple wires pass through one side of the protective shell. Multiple through holes are opened on the other side of the microcomputer cable socket. The female terminals inside the microcomputer cable socket are located inside the through holes of the microcomputer cable socket, and the female terminals inside the microcomputer cable socket are arranged in two rows evenly.
[0018] The above technical solution, through the matching of the through hole on one side of the microcomputer cable socket and the microcomputer plug terminal, and through the fixed connection of the internal female terminal of the microcomputer cable socket and multiple wires, helps to improve the testing efficiency of the equipment.
[0019] As a further description of the above technical solution:
[0020] Both outer walls of the testing device are provided with clamping plates. One clamping plate is fixedly connected to one side of the box cover on the side away from the testing device. A sliding groove is opened on one side of the box cover. A slider is fixedly connected to one side of the other clamping plate. The outer wall of the slider of the other clamping plate is slidably connected to the inner wall of the sliding groove.
[0021] The above technical solution provides support for the test device from the bottom through the box cover, and the right side plate and the box cover are slidably connected. The two plates limit the movement of the test device on both sides, thus enabling the device to fix test devices of different sizes.
[0022] As a further description of the above technical solution:
[0023] The inner wall of the housing is provided with a buffer pad, the outer wall of the terminal switching assembly is attached to the inner wall of the buffer pad, the upper side of the buffer pad has a first groove and a second groove, the testing device is set inside the first groove, the microcomputer cable socket is set inside the second groove, and the upper sides of the buffer pad have a third groove that matches the card plate.
[0024] The above technical solution, through the design of the buffer pad and the opening of groove one, groove three and groove two, helps to improve the safety of the equipment.
[0025] As a further description of the above technical solution:
[0026] A limiting band is fixedly connected to the upper side of the box body. One end of the limiting band is fixedly connected to one side of the box cover. A box lock and a handle are provided on one side of the box body. One side of the box lock is located on the outer wall of the box cover.
[0027] The above technical solution provides support for the lid by fixing the limiting strap to the lid and the body, and achieves portability of the device through the design of the lock and handle.
[0028] This utility model has the following beneficial effects:
[0029] 1. In this utility model, by connecting the female terminal on the microcomputer cable socket to multiple wires one by one, and switching multiple wire circuits through the terminal switching component, the testing equipment can sequentially perform insulation resistance tests on the terminals on the microcomputer plug connected to the microcomputer cable socket. The equipment is housed in a cabinet and supported by a cover, thus solving the problems of traditional manual testing methods, where instrument probes need to be tested manually one by one, often resulting in terminal testing errors. This not only consumes a lot of time but also fails to effectively guarantee the accuracy and reliability of the test results.
[0030] 2. In this utility model, the terminal switching component achieves the function of switching terminal detection by means of the electrical connection between the common terminal of the testing equipment and the back contact of the switch, the sequential switching of multiple toggle switches, and the cooperation of wires and microcomputer cable sockets.
[0031] 3. In this utility model, the terminal switching component achieves the function of switching terminal detection by electrically connecting the common terminal of the testing equipment and the output terminal of the multiplexer, electrically connecting the input terminal of the multiplexer and multiple wires, electrically connecting the control terminal of the multiplexer and the control circuit, and electrically connecting the control circuit and the rotary encoder, and by cooperating with the wires and the microcomputer cable socket.
[0032] 4. In this utility model, the card plate and the slide groove are connected by sliding left and right, so the card plate can be moved left and right. The box cover supports the lower side of the testing device, and the two card plates limit the two sides of the testing device, thereby realizing the function of the device to adapt to testing devices of different sizes. Attached Figure Description
[0033] Figure 1 This is a schematic diagram of the toggle switch structure of an interface microcomputer cable insulation testing device proposed in this utility model;
[0034] Figure 2 This utility model provides an architectural diagram of the rotary encoder of an interface microcomputer cable insulation testing device.
[0035] Figure 3 This is a schematic diagram of the toggle switch structure of an interface microcomputer cable insulation testing device proposed in this utility model;
[0036] Figure 4 This is a schematic diagram of the rotary encoder structure of an interface microcomputer cable insulation testing device proposed in this utility model;
[0037] Figure 5 This is a schematic diagram of the microcomputer cable socket structure of an interface microcomputer cable insulation testing device proposed in this utility model.
[0038] Legend:
[0039] 1. Limiting band; 2. Box cover; 3. Slide groove; 4. Testing device; 5. Card plate; 6. Switch rear contact; 7. Groove one; 8. Groove three; 9. Microcomputer cable socket; 10. Box body; 11. Groove two; 12. Box lock; 13. Handle; 14. Terminal switching assembly; 15. Toggle switch; 16. Buffer pad; 17. Multiplexer; 18. Control circuit; 19. Rotary encoder; 20. Protective shell; 21. Wire. Detailed Implementation
[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0041] Reference Figure 1 , Figure 3 and Figure 5 The present invention provides an embodiment of an interface microcomputer cable insulation testing device, comprising a housing 10, a housing cover 2 on the upper side of the housing 10, a testing device 4 on one side of the housing cover 2, a terminal switching assembly 14 and a microcomputer cable socket 9 inside the housing 10, the output end of the terminal switching assembly 14 being electrically connected to the common end of the testing device 4, and multiple wires 21 being fixedly connected to the input end of the terminal switching assembly 14, the terminal switching assembly 14 being electrically connected to the microcomputer cable socket 9 through the wires 21, the microcomputer cable socket 9 having multiple female terminals inside, and one end of each of the multiple wires 21 being fixedly connected to one of the multiple female terminals inside the microcomputer cable socket 9;
[0042] In this embodiment, Figure 3 The front, back, left, and right are the directions, the wire 21 is the conductor, and there are 32 female terminals. When using this device, open the box cover 2 so that it supports the test device 4, connect the microcomputer cable socket 9 and the microcomputer plug, so that the 32 female terminals on the microcomputer cable socket 9 and the 32 terminals on the microcomputer plug are connected one by one, open the test device 4, connect the common terminal of the test device 4 to the output terminal of the terminal switching component 14, and ground the ground terminal, thereby completing the assembly of the device;
[0043] At the start of the test, the current from the test device 4 is switched by the terminal switching component 14 and enters different wires 21. These 32 wires 21 are then connected one-to-one with the 32 female terminals on the microcomputer cable socket 9. The female terminals on the microcomputer cable socket 9 are connected to the terminals on the microcomputer plug, allowing the current to flow into the corresponding terminals of the microcomputer plug. The insulation resistance value of the corresponding terminals is measured. Through the sequential switching of the terminal switching component 14 and the connection of the 32 wires 21, the current flows sequentially into the 32 terminals, and the insulation resistance value of each terminal is measured sequentially. When the resistance value is found to be outside the preset range, the test device 4 triggers an audible and visual alarm to alert the test personnel. This solves the problems of traditional manual testing methods, where instrument probes need to be tested manually one by one, often resulting in terminal testing errors. This not only consumes a lot of time but also fails to effectively guarantee the accuracy and reliability of the test results.
[0044] Reference Figure 1 , Figure 3 and Figure 5 The terminal switching assembly 14 includes a switch rear contact 6 and multiple toggle switches 15. The common terminal of the test device 4 is electrically connected to one end of the switch rear contact 6, and one end of each of the multiple toggle switches 15 is electrically connected to the other end of the switch rear contact 6. The other ends of the multiple toggle switches 15 are fixedly connected to the other ends of the multiple wires 21 one by one.
[0045] Specifically, there are 32 toggle switches 15. The other ends of the 32 wires 21 are connected one-to-one with the other ends of the 32 toggle switches 15. One end of the 32 toggle switches 15 is connected to the other end of the switch contact 6. When measuring the terminals on the microelectromechanical plug, the 32 toggle switches 15 are switched in sequence to realize the sequential switching of the 32 wires 21, thereby realizing the terminal switching component 14 switching terminal detection function.
[0046] Reference Figure 2 , Figure 4 and Figure 5 The present invention also provides an embodiment in which the terminal switching assembly 14 includes a multiplexer 17, a control circuit 18 and a rotary encoder 19. The output terminal of the multiplexer 17 is electrically connected to the common terminal of the test device 4. The other ends of the multiple wires 21 are all fixedly connected to the input terminal of the multiplexer 17. The control terminal of the multiplexer 17 is electrically connected to one end of the control circuit 18, and the other end of the control circuit 18 is electrically connected to one end of the rotary encoder 19.
[0047] Specifically, the control circuit 18 includes a BCD decoding module, a logic control module, and a driver module. The core of the BCD decoding module is a BCD decoder such as the 74LS138 chip, the core of the logic control module is a microcontroller such as the STM32, and the core of the driver module is a transistor or relay driver chip such as the ULN2003. All of the above are existing technologies.
[0048] The input terminals of the multiplexer 17 are connected to the other ends of the 32 wires 21 respectively, and the output terminal of the multiplexer 17 is connected to the common terminal of the test device 4. During the test, the rotary encoder 19 is rotated to output BCD encoding to the control circuit 18. The BCD decoder of the control circuit 18 converts the encoding into an address signal. After the logic control module confirms that the signal is error-free, it generates the conduction command for the corresponding wire 21 and controls the timing, such as delaying for 10ms to ensure signal stability. Then the drive module amplifies the command signal and transmits it to the control terminal of the multiplexer 17, so that it conducts the connection between the corresponding wire 21 and the test device 4. This allows the output current of the test device 4 to detect the insulation resistance value through the corresponding line, thereby realizing the terminal switching component 14's function of switching terminal detection.
[0049] Reference Figure 1 Test device 4 is an electronic megohmmeter;
[0050] Specifically, the testing device 4 is designed as an electronic megohmmeter to enable the device to perform electric testing.
[0051] Reference Figure 5 A protective shell 20 is fixedly connected to one side of the microcomputer cable socket 9. The outer walls of multiple wires 21 pass through one side of the protective shell 20. Multiple through holes are opened on the other side of the microcomputer cable socket 9. The female terminals inside the microcomputer cable socket 9 are located inside the through holes of the microcomputer cable socket 9. The female terminals inside the microcomputer cable socket 9 are arranged in two rows evenly.
[0052] Specifically, when testing the insulation resistance of the terminals on the microelectromechanical plug, the terminals on the microelectromechanical plug are inserted one by one into the through holes on the microcomputer cable socket 9, so that the female terminal on the microcomputer cable socket 9 and the terminal on the microelectromechanical plug are in contact, thereby realizing the circuit conduction. The design of the protective shell 20 improves the safety protection performance of the microcomputer cable socket 9.
[0053] Reference Figure 3 The outer walls of both sides of the test device 4 are provided with a clamping plate 5. One of the clamping plates 5 is fixedly connected to one side of the box cover 2 on the side away from the test device 4. A sliding groove 3 is opened on one side of the box cover 2. A slider is fixedly connected to one side of the other clamping plate 5. The outer wall of the slider of the other clamping plate 5 is slidably connected to the inner wall of the sliding groove 3.
[0054] Specifically, by sliding the card plate 5 and the slide 3 left and right, the card plate 5 can be moved left and right. The cover 2 supports the lower side of the test device 4, and the two card plates 5 limit the two sides of the test device 4, thus realizing the function of the device to adapt to test devices 4 of different sizes.
[0055] Reference Figure 3 The inner wall of the housing 10 is provided with a buffer pad 16. The outer wall of the terminal switching assembly 14 is attached to the inner wall of the buffer pad 16. The upper side of the buffer pad 16 is provided with a first groove 7 and a second groove 11. The test device 4 is located inside the first groove 7. The microcomputer cable socket 9 is located inside the second groove 11. The upper sides of the buffer pad 16 are provided with a third groove 8 that matches the card plate 5.
[0056] Specifically, the design of the buffer pad 16 can improve the protection of the terminal switching assembly 14, and the opening of the first groove 7, the third groove 8 and the second groove 11 can improve the storage capacity of the housing 10 and the aesthetics of the device.
[0057] Reference Figure 3A limiting band 1 is fixedly connected to the upper side of the box body 10. One end of the limiting band 1 is fixedly connected to one side of the box cover 2. A box lock 12 and a handle 13 are provided on one side of the box body 10. One side of the box lock 12 is located on the outer wall of the box cover 2.
[0058] Specifically, the design of the limiting band 1 allows the box body 10 to support the box cover 2, thereby providing support for the testing device 4. The design of the box lock 12 and the handle 13 helps to improve the portability of the device.
[0059] Working principle: When using this device, open the box cover 2, take out the test device 4 and place it on the box cover 2. Use the left side clamp 5 to lock the left side of the test device 4, and slide the right side clamp 5 to lock the right side of the test device 4, thus completing the fixation of the test device 4. Connect the microcomputer cable socket 9 and the microcomputer plug, so that the 32 female terminals on the microcomputer cable socket 9 and the 32 terminals on the microcomputer plug are connected one by one, thus completing the assembly of the device.
[0060] If the terminal switching assembly 14 consists of a toggle switch 15 and a switch contact 6, the common terminal of the test device 4 and one end of the switch contact 6 are connected, and the grounding terminal is grounded. The current on the test device 4 flows to different wires 21 through the sequential switching of 32 toggle switches 15. The insulation resistance of the 32 microelectromechanical plug terminals is measured sequentially through the contact between the female terminal and the microelectromechanical plug terminal on the microelectromechanical cable socket 9.
[0061] If the terminal switching assembly 14 consists of a control circuit 18, a multiplexer 17, and a rotary encoder 19, the common terminal of the test device 4 is connected to the output terminal of the multiplexer 17, and the grounding terminal is grounded. During testing, the rotary encoder 19 is rotated to output a signal to the control circuit 18. After conversion by the control circuit 18, the multiplexer 17 is controlled to connect the corresponding wire 21 to the test device 4, so that the output current of the test device 4 can be used to detect the insulation resistance value through the corresponding line. This allows for the sequential measurement of the insulation resistance of 32 microelectromechanical plug terminals, thus solving the problems of traditional manual testing methods, where instrument probes need to be tested manually one by one, and terminal testing errors often occur. This not only consumes a lot of time but also cannot effectively guarantee the accuracy and reliability of the test results.
[0062] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An interface microcomputer cable insulation testing device, comprising a housing (10), characterized in that: The box (10) is provided with a box cover (2) on the upper side. A test device (4) is provided on one side of the box cover (2). A terminal switching assembly (14) and a microcomputer cable socket (9) are provided inside the box (10). The output end of the terminal switching assembly (14) is electrically connected to the common end of the test device (4). Multiple wires (21) are fixedly connected to the input end of the terminal switching assembly (14). The terminal switching assembly (14) is electrically connected to the microcomputer cable socket (9) through the wires (21). Multiple female terminals are provided inside the microcomputer cable socket (9). One end of each of the multiple wires (21) is fixedly connected to one of the multiple female terminals inside the microcomputer cable socket (9).
2. The interface microcomputer cable insulation testing device according to claim 1, characterized in that: The terminal switching assembly (14) includes a switch back contact (6) and multiple toggle switches (15). The common terminal of the test device (4) is electrically connected to one end of the switch back contact (6), and one end of each of the multiple toggle switches (15) is electrically connected to the other end of the switch back contact (6). The other ends of the multiple toggle switches (15) are fixedly connected to the other ends of multiple wires (21) one by one.
3. The interface microcomputer cable insulation testing device according to claim 1, characterized in that: The terminal switching assembly (14) includes a multiplexer (17), a control circuit (18), and a rotary encoder (19). The output of the multiplexer (17) is electrically connected to the common terminal of the test device (4). The other ends of the multiple wires (21) are fixedly connected to the input of the multiplexer (17). The control terminal of the multiplexer (17) is electrically connected to one end of the control circuit (18), and the other end of the control circuit (18) is electrically connected to one end of the rotary encoder (19).
4. The interface microcomputer cable insulation testing device according to claim 1, characterized in that: The testing device (4) is an electronic megohmmeter.
5. The interface microcomputer cable insulation testing device according to claim 1, characterized in that: A protective shell (20) is fixedly connected to one side of the microcomputer cable socket (9). The outer walls of multiple wires (21) pass through one side of the protective shell (20). Multiple through holes are opened on the other side of the microcomputer cable socket (9). The female terminals inside the microcomputer cable socket (9) are set inside the through holes of the microcomputer cable socket (9). The female terminals inside the microcomputer cable socket (9) are arranged in two rows evenly.
6. The interface microcomputer cable insulation testing device according to claim 1, characterized in that: The test device (4) has two outer walls with a plate (5). One of the plates (5) is fixedly connected to one side of the box cover (2) on the side away from the test device (4). A groove (3) is opened on one side of the box cover (2). A slider is fixedly connected to one side of the other plate (5). The outer wall of the slider of the other plate (5) is slidably connected to the inner wall of the groove (3).
7. The interface microcomputer cable insulation testing device according to claim 1, characterized in that: The inner wall of the housing (10) is provided with a buffer pad (16). The outer wall of the terminal switching assembly (14) and the inner wall of the buffer pad (16) are attached. The upper side of the buffer pad (16) is provided with a first groove (7) and a second groove (11). The test device (4) is located inside the first groove (7). The microcomputer cable socket (9) is located inside the second groove (11). The upper sides of the buffer pad (16) are provided with a third groove (8) that matches the card plate (5).
8. The interface microcomputer cable insulation testing device according to claim 6, characterized in that: The upper side of the box (10) is fixedly connected to a limiting band (1), one end of the limiting band (1) is fixedly connected to one side of the box cover (2), and a box lock (12) and a handle (13) are provided on one side of the box (10), and one side of the box lock (12) is provided on the outer wall of the box cover (2).