Universal automatic test equipment for contactors
The contactor universal automatic testing equipment integrates multiple test modules and simulated test pieces, solving the problem of insufficient single-board testing equipment in the existing technology. It realizes efficient and universal testing of boards, which is suitable for design verification and production inspection stages, and avoids the risk of interface short circuits.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-04-10
AI Technical Summary
Existing technologies lack a universal single-board testing device, which cannot meet the complex testing needs of boards, especially in the design verification and production inspection stages.
A general-purpose automatic test device for contactors was designed, including a signal simulation device, an interface adapter, and a simulated test piece. It integrates discrete quantity, analog quantity, bus, and main computer test modules, adopts a portable chassis and open bracket, supports multiple test types, has heat dissipation and power supply functions, and realizes data interaction through a PXI controller.
It enables universal testing of circuit boards, applicable to design verification and production inspection stages, ensuring that test equipment avoids interface short circuits when temperature changes, and provides an efficient testing solution.
Smart Images
Figure CN224109593U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to test technical field, concretely relates to contactor general automatic test equipment. BACKGROUND
[0002] Single board test refers to the test to whole circuit board to ensure that the quality and performance of circuit board meet the prescribed standard. Single board test is an important link in the process of circuit board manufacturing, and is an important guarantee for ensuring the normal work of circuit board. Single board test can be divided into the following categories: (1) appearance inspection: mainly check the external condition of circuit board, including the size, structure of circuit board, whether the installation of components meets the specification requirements, etc. (2) static electrical test: mainly test circuit board through potentiometer, multimeter and other test instruments, test whether various electrical parameters of circuit board meet the specification requirements. (3) dynamic electrical test: mainly test the electrical performance of circuit board, mainly check whether the timing of various signals is correct, which is an important link to ensure the performance of circuit board. (4) function test: mainly used to test whether the function of circuit board is normal, including the test function of various input and output interfaces, etc.
[0003] During single board test, different test quantities of board card usually need to be tested separately, for example, discrete quantity / frequency quantity, analog quantity, bus signal, main computer signal, audio and video signal and power supply of board card, and each test stage also contains design verification stage test and production inspection stage test of board card. In the face of complex test requirements, there is no general single board test equipment to meet the above test requirements at present. UTILITY MODEL CONTENT
[0004] The utility model aims at overcoming the insufficient of prior art, and provides contactor general automatic test equipment.
[0005] The utility model aims at overcoming the insufficient of prior art, and provides contactor general automatic test equipment.
[0006] The contactor general automatic test equipment includes signal simulation equipment, interface adapter and analog test piece.
[0007] The signal simulation equipment includes cabinet and multiple function modules, and the function module includes discrete quantity test module, analog quantity test module, bus test module, main computer test module and power supply test module, and generates excitation signal for design verification stage test and production inspection stage test of various types of board cards.
[0008] The interface adapter adopts a split box body, one part is a test piece mounting support and a test piece signal adapter plate, and the other part is a power supply module, a bus interface, a signal control and adapter component, and the two part structures are mechanically connected and combined together to form a whole; a plurality of test slots are arranged on the test piece mounting support for mounting and fixing the test pieces and simulation test pieces;
[0009] The simulation test piece is used for inserting into the empty test slot during the test when the number of test pieces is less than the number of test slots, and shielding the connector interface screen provided by the interface adapter, and the size and interface definition of the simulation test piece are designed according to the corresponding test piece.
[0010] Further, the signal simulation device has an integrated portable reinforced case, and a signal interface for external output is arranged on the side of the case body, and the signal interface adopts a J599 I series aviation connector.
[0011] Further, the test piece mounting support is an open support, a plurality of ventilation holes are arranged on the side wall of the support, and a heat dissipation cold plate is arranged at the bottom of the support for heat dissipation of the test pieces and the simulation test pieces.
[0012] Further, the power supply module includes a plurality of power supply units with output control, which are used for providing working power for the test pieces and the simulation test pieces and providing the required power in the interface adapter.
[0013] Further, the signal simulation device further includes a PXI controller and a program-controlled interface located outside the case body, the PXI controller is used for providing corresponding controllers for test process control and PXI device resource control, and the program-controlled interface is used for data interaction with the interface adapter.
[0014] Further, the program-controlled interface is an Ethernet interface provided by the PXI controller.
[0015] Further, the signal simulation device further includes a man-machine interaction module, including a keyboard, a display and a touch screen, which are connected with the PXI controller and provide a man-machine interaction interface for an operator.
[0016] The utility model discloses the beneficial effect is:
[0017] The contactor universal automatic test equipment provided by the utility model sets different test function modules in the portable case body, provides corresponding signal excitation for the interface adapter, completes the universal test of the board card, and is suitable for the design verification test stage and production inspection test stage of the board card; the simulation test piece is inserted into the empty slot during the test, the connector interface provided by the interface adapter can be effectively shielded, and the interface short circuit caused by condensation when the test temperature changes is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 The composition schematic diagram of the contactor general automatic test equipment provided for the embodiment of the present application is shown in the figure.
[0019] Fig. 2 The system structure diagram of the contactor general automatic test equipment provided for the embodiment of the present application is shown in the figure. DETAILED DESCRIPTION
[0020] The technical scheme of the present application will be described clearly and completely in combination with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the present application.
[0021] Referring to Figs. 1-2 The present application provides a technical scheme:
[0022] The contactor general automatic test equipment comprises a signal simulation device, an interface adapter and a simulated test piece.
[0023] The signal simulation device comprises a case and a plurality of function modules, the function modules comprise a discrete quantity test module, an analog quantity test module, a bus test module, a main computer test module and a power supply test module, and the excitation signals for the design verification stage test and the production inspection stage test of various types of board cards are generated.
[0024] The discrete quantity test module can be used for completing the design verification and production inspection test of five discrete quantity / frequency quantity modules and completing the production inspection test of five audio and video modules. The analog quantity test module can be used for completing the design verification and production inspection test of five test pieces. The bus test module can be used for completing the design verification and production inspection test of five test pieces. The main computer test module can be used for completing the design verification and production inspection test of one test piece. The main computer test module can be used for completing the production inspection test of one test piece.
[0025] The interface adapter adopts a split case, one part of which is a test piece mounting support and a test piece signal adapter plate, and the other part of which is a power supply module, a bus interface, a signal control and adapter component. The two structural parts are mechanically connected and combined together to form a whole. A plurality of test slots are arranged on the test piece mounting support for mounting and fixing the test pieces and the simulated test pieces.
[0026] Further, the test piece mounting bracket is an open bracket, a plurality of ventilation holes are formed in the side wall of the bracket, and a heat dissipation cold plate is arranged at the bottom of the bracket for heat dissipation of the test piece and the simulation test piece.
[0027] Specifically, the mounting mode of the test piece during testing is consistent with the mounting mode in the actual working condition, and a guide groove mounting and fixing mode is adopted; the power supply index of the reference test piece is referred to, and the heat power consumption of the test piece is estimated to be about 10 W. The structural design of the interface adapter fully considers the heat dissipation during testing, and the interface adapter needs to work at-55℃~+85℃, and the structure and electrical design considers the influence of the temperature environment; considering that the test piece should fully contact the environment, the adapter adopts an open bracket (a sufficient ventilation hole is formed in the side wall of the bracket). The test piece heats air through the heat dissipation cold plate to generate natural convection to carry away heat. In addition, the test piece needs more excitation signals, and the corresponding switching space is large, so the mounting spacing between the test pieces is also increased.
[0028] The simulation test piece is used to insert into the empty test slot during testing to shield the connector interface screen provided by the interface adapter when the number of test pieces is less than the number of test slot positions, and the size and interface definition of the simulation test piece are designed according to the corresponding test piece.
[0029] In some specific embodiments, the interface adapter is considered according to 5 test stations, and when the test pieces are less than 5 test pieces, the simulation test piece is adopted. During testing, the empty slot is inserted to shield the connector interface screen provided by the interface adapter, so as to avoid short circuit of the interface caused by condensation when the test temperature changes.
[0030] Further, the power supply module includes a plurality of power supply units with output control, for providing working power for the test piece and the simulation test piece and providing the required power supply inside the interface adapter. Specifically, the power supply module includes:
[0031] Power supply 1: supply UUT, ±15V / 30W, voltage accuracy ±1%, with output control;
[0032] Power supply 2: supply UUT, ±12V / 30W, voltage accuracy ±1%, with output control;
[0033] Power supply 3: supply UUT, +5V / 100W, voltage accuracy ±1%, with output control;
[0034] Power supply 4: supply adapter, +5V / 30W, voltage accuracy ±1%, with output control.
[0035] As Fig. 1As shown, the signal simulation device adopts a PXI bus-based virtual instrument device to realize the functional requirements required by testing, the cabinet of the signal simulation device is an integrated portable reinforced cabinet, facilitating portability, the side of the cabinet body is externally provided with a signal interface for external output, and the signal interface adopts a J599 I series aviation connector.
[0036] Further, the signal simulation device further comprises a PXI controller and a program-controlled interface located outside the cabinet, the PXI controller is used for providing a corresponding controller for test flow control and PXI device resource control, and the program-controlled interface is used for data interaction with the interface adapter.
[0037] Further, the program-controlled interface is an Ethernet interface provided by the PXI controller.
[0038] Further, the signal simulation device is further provided with a human-computer interaction module, including a keyboard, a display and a touch screen, which are connected with the PXI controller and provide a human-computer interaction interface for an operator.
[0039] As described above, the signal simulation device is internally provided with device resources required by the test of the test piece, the power supply required by the test piece and the interface adapter is placed in the interface adapter (adapted to the wiring requirements of the user for power supply and power supply monitoring), and the functional framework of the signal simulation device and the interface adapter is as shown in Fig. 2 .
[0040] The contactor universal automatic test equipment provided by the application completes the universal test of the board card by arranging different test function modules in the portable cabinet and providing corresponding signal excitation for the interface adapter, and is suitable for the design verification test stage and the production inspection test stage of the board card; the application adds a simulation test piece when there is a remaining test station, the simulation test piece is inserted into an empty slot during testing, can effectively shield the connector interface provided by the interface adapter, and avoids the short circuit of the interface caused by condensation when the test temperature changes.
[0041] The above only describes preferred embodiments of the application, and it should be understood that the application is not limited to the forms disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concepts described herein by using the above teachings or related technologies or knowledge. Any modification and change made by those skilled in the art without departing from the spirit and scope of the application shall be within the protection scope of the claims of the application.
Claims
1. A contactor universal automatic test equipment, characterized in that: The signal simulation device, the interface adapter and the simulation test piece are included. The signal simulation device includes a cabinet and a plurality of functional modules, the functional modules include discrete quantity test module, analog quantity test module, bus test module, main computer test module and power supply test module, and the excitation signal for the design verification stage test and the production inspection stage test of each type of board card is generated. The interface adapter adopts a split cabinet, one part is a test piece mounting bracket and a test piece signal adapter plate, and the other part is a power supply module, a bus interface, a signal control and adapter component, and the two parts are mechanically connected and combined into one whole; a plurality of test slots are arranged on the test piece mounting bracket for mounting and fixing the test piece and the simulation test piece. The simulation test piece is used to insert the empty test slot during the test when the number of test pieces is less than the number of test slots, and the connector interface screen of the interface adapter is shielded, the size and interface definition of the simulation test piece are designed according to the corresponding test piece.
2. The contactor UAT of claim 1, wherein: The cabinet of the signal simulation device is an integrated portable reinforced cabinet, a signal interface for external output is arranged on the side of the cabinet body, and the signal interface adopts J599 I series aviation connector.
3. The contactor UAT of claim 1, wherein: The test piece mounting bracket is an open bracket, a plurality of ventilation holes are opened on the side wall of the bracket, and a heat dissipation cold plate is arranged at the bottom of the bracket for heat dissipation of the test piece and the simulation test piece.
4. The contactor UAT of claim 1, wherein: The power supply module includes a plurality of power supply units with output control, which is used to provide working power for the test piece and the simulation test piece and provide the required power for the interface adapter.
5. The contactor UAT of claim 1, wherein: The signal simulation device further includes a PXI controller and a program-controlled interface located outside the cabinet, the PXI controller is used to provide corresponding controllers for test process control and PXI device resource control, and the program-controlled interface is used for data interaction with the interface adapter.
6. The contactor UAT of claim 5, wherein: The program-controlled interface is an Ethernet interface provided by the PXI controller.
7. The contactor UAT of claim 5, wherein: The signal simulation device further includes a man-machine interaction module, including a keyboard, a display and a touch screen, which is connected with the PXI controller and provides a man-machine interaction interface for the operator.