High-integration-level severe-environment-resistant test tool

Abstract

The utility model relates to a high integration level severe environment resistance test tool, which comprises a shell and an internal circuit, the internal circuit is arranged in the shell, micro-perforated corrugated grooves are respectively arranged above and below a main box body frame in the shell, an upper cover plate is arranged above the corrugated grooves above the main box body frame, and a lower cover plate is arranged above the corrugated grooves above the main box body frame. A lower cover plate is installed below the corrugated groove below the main box body frame, a left side plate is installed on the left side of the main box body frame, a right side plate is installed on the right side of the main box body frame, a front panel is installed on the front portion of the main box body frame, and a rear panel is installed on the rear portion of the main box body frame. The utility model can effectively solve the problems of single test, low test speed, few integrated functions and severe test environment, and can work within the range of-30 DEG C and + 50 DEG C.

Description

Technical Field

[0001] The utility model belongs to the technical field of integrated testing, in particular to a highly integrated testing tooling capable of resisting harsh environments. Background Art

[0002] With the rapid development of computer equipment, the functions of equipment are becoming more and more complex, the number of channels is increasing, and the speed requirements are getting faster and faster. Test tooling plays a key role in testing the functions of equipment, but the existing tooling has certain disadvantages:

[0003] 1. Different interfaces require different tooling, and the communication interface and I / O interface cannot be tested at the same time, which greatly increases the testing time;

[0004] 2. The communication interface and I / O interface are manually tested, and the test speed does not meet the requirements;

[0005] 3. The test tooling is commercial equipment. If the tooling is damaged during transportation, it cannot be tested normally. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art and to propose a highly integrated test fixture that is resistant to harsh environments, which can maintain stable operation of the power grid and effectively solve the problems of single testing, insufficient test speed, few integrated functions, and harsh test environment, while being able to operate within the range of -30°C and +50°C.

[0007] The utility model solves the technical problem by adopting the following technical solutions:

[0008] A highly integrated test fixture resistant to harsh environments comprises a shell and an internal circuit, wherein the internal circuit is installed inside the shell, and the shell comprises an upper cover, a micro-perforated corrugated groove, a main box frame, a lower cover, a left side panel, a right side panel, a front panel and a rear panel, wherein the micro-perforated corrugated groove is installed above and below the main box frame respectively, the upper cover is installed above the corrugated groove above the main box frame, the lower cover is installed below the corrugated groove below the main box frame, the left side panel is installed on the left side of the main box frame, the right side panel is installed on the right side of the main box frame, the front panel is installed on the front of the main box frame, and the rear panel is installed on the rear of the main box frame.

[0009] Moreover, the internal circuit includes a CPCI bus, a power module, an interface debugging module, a parallel I / O module, a digital I / O module, a communication module, a mainboard module, a liquid crystal display, an external keyboard and a built-in keyboard, wherein the CPCI bus is respectively connected to the power module, the interface debugging module, the parallel I / O module, the digital I / O module, the communication module and the mainboard module, wherein the power module is used to convert AC or DC power into a voltage used by the test tooling, the CPCI bus is used for voltage and signal transmission, the mainboard module is connected to the liquid crystal display via a VGA interface, the mainboard module is connected to the output end of the selection switch via a PS2 interface, and the input end of the selection switch is respectively connected to the external keyboard and the built-in keyboard.

[0010] Moreover, an air duct is provided under the upper cover plate, and a fan is installed between the rear part of the main box frame and the rear panel. The fan is used to extract the heat from the air duct to ensure good heat dissipation of the test tooling.

[0011] Furthermore, conductive rubber pads are provided at the connection between the main box frame and the front panel and the rear panel to ensure shielding and sealing.

[0012] Moreover, a guide rail groove is provided inside the main box frame, and the internal circuit is inserted into the guide rail groove inside the main box frame in the form of a plug-in board and is fixed by a wedge-shaped locking device on the guide rail groove.

[0013] Furthermore, the rear panel is provided with an external interface, and the internal circuit is connected to the external interface via a J30J series connector.

[0014] The advantages and positive effects of the utility model are:

[0015] The utility model includes a shell and an internal circuit, wherein the internal circuit is installed inside the shell, wherein micro-perforated corrugated grooves are installed above and below the main box frame in the shell, an upper cover is installed above the corrugated groove above the main box frame, a lower cover is installed below the corrugated groove below the main box frame, a left side plate is installed on the left side of the main box frame, a right side plate is installed on the right side of the main box frame, a front panel is installed on the front of the main box frame, and a rear panel is installed on the rear of the main box frame. The utility model can effectively solve the problems of single testing, insufficient test speed, few integrated functions, and harsh test environment, and can work within the range of -30℃ and +50℃. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is the internal circuit structure diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection between the internal circuit and the rear panel of the utility model;

[0019] Figure 4 This is a schematic diagram of the micro-perforated corrugated plate of the utility model;

[0020] Figure 5 This is a structural diagram of the outer shell of the utility model.

[0021] Description of labels:

[0022] 1-upper cover, 2-micro-perforated corrugated groove, 3-main box frame, 4-lower cover, 5-J30J series connector, 6-external lead interface. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below with reference to the accompanying drawings.

[0024] A highly integrated test fixture resistant to harsh environments, including a housing and internal circuits, such as Figure 1 As shown in the figure, the structural elements of the test fixture meet the requirements of a 19-inch standard chassis. Compared with the previous improvement, there was no standard chassis structure and parts could not be purchased in a unified manner. The test fixture integrates multiple functional test interfaces. Compared with the previous improvement, more test points are integrated.

[0025] like Figure 5 As shown, the shell includes an upper cover plate 1, a micro-perforated corrugated groove 2, a main box frame 3, a lower cover plate 4, a left side plate, a right side plate, a front panel and a rear panel, wherein the micro-perforated corrugated groove is installed above and below the main box frame respectively, the upper cover plate is installed above the corrugated groove above the main box frame, the lower cover plate is installed below the corrugated groove below the main box frame, the left side plate is installed on the left side of the main box frame, the right side plate is installed on the right side of the main box frame, the front panel is installed on the front of the main box frame, and the rear panel is installed on the rear of the main box frame.

[0026] like Figure 2 As shown, in order to meet the high reliability requirements of the system as a whole for the computer and the diversified, serialized and modular requirements for the functions and performance of the computer, the test fixture adopts a modular design method, can be inserted with multiple modules, and can be tested simultaneously: the internal circuit includes a CPCI bus, a power module, an interface debugging module, a parallel I / O module, a digital I / O module, a communication module, a mainboard module, a liquid crystal display, an external keyboard and a built-in keyboard, wherein the CPCI bus is respectively connected to the power module, the interface debugging module, the parallel I / O module, the digital I / O module, the communication module and the mainboard module, wherein the power module is used to convert AC or DC power into a voltage used by the test fixture, the CPCI bus is used for voltage and signal transmission, the mainboard module is connected to the liquid crystal display through the VGA interface, the mainboard module is connected to the output end of the selection switch through the PS2 interface, and the input end of the selection switch is respectively connected to the external keyboard and the built-in keyboard.

[0027] The test fixture adopts a sealed structure and mainly dissipates heat through heat conduction. There is an air duct under the upper cover plate, and a fan is installed between the rear of the main box frame and the rear panel. The fan is used to extract the heat from the air duct to ensure good heat dissipation of the test fixture. Compared with before the improvement, the heat dissipation of the test fixture has been greatly improved.

[0028] The shell of the test fixture is welded with aluminum plates. The box is well sealed and has good shielding performance. Conductive rubber pads are installed at the connection between the main box frame and the front and rear panels to ensure shielding and sealing. Shielding glass is installed in front of the built-in LCD to ensure shielding and sealing. Compared with before the improvement, the electromagnetic compatibility and sealing are greatly improved.

[0029] The main box frame is equipped with a guide rail groove inside. The internal circuit is inserted into the guide rail groove inside the main box frame in the form of a plug-in board and fixed by a wedge-shaped locking device on the guide rail groove. A hidden multi-axis hinge is installed on the inside of the front panel. During maintenance operations, the front panel can be rotated to the right, which is convenient for board insertion and removal operations, and can ensure that the front panel and the chassis remain connected, eliminating the need to disconnect the connecting cables between the electrical components on the front panel and the motherboard. Compared with the design before the improvement, this design is convenient for replacing modules.

[0030] The test fixture parts are made of aluminum alloy with excellent thermal conductivity, milled and welded with aluminum alloy 3A21, and the board frame is made of aluminum alloy 2A12. It has good vibration resistance. The combination of vacuum brazing and argon arc welding ensures the tight fit of the corrugated plate and the guide plate, as well as the bonding strength of the left and right side walls and the guide plate of the chassis. The front and rear panels are fixedly connected to the front and rear flange surfaces of the chassis by screws, and the six sides of the chassis form a continuous closed stable structure, which provides a nearly rigid support structure for the internal boards and ensures a high natural frequency of the chassis. Compared with the original design, the vibration resistance of the test fixture is greatly improved.

[0031] The test fixture adopts a modular design. Different interfaces can be tested by inserting different modules, which shortens the test time. The insulation resistance between the signal ground of the test fixture and the chassis ground is ≥20MΩ, and the insulation resistance between the AC power input terminal and the chassis ground is ≥100MΩ.

[0032] like Figure 3 As shown, the test fixture rear module no longer uses direct welding, and a J30J series connector 5 is provided on the outside of the rear module. The connector adopts a quick-lock fastening method, which is very convenient to plug and unplug, and has a high pin density, which can meet the high-density interface requirements of the control computer. The J30J series connector is used for signal output. The connector is easy to plug and unplug, and the electrical installation process is simple, which can effectively improve the maintainability of the product, and various signal routings are independent, which can effectively solve the interference between various signals.

[0033] Each slot of the test fixture has different external lead-out interfaces 6 according to different test functions, and the panel is equipped with a display screen and a timer, which can visually check the status and running time of the fixture. Compared with before the improvement, the running status and running time of the fixture are more intuitive.

[0034] like Figure 4 As shown. The micro-perforated corrugated plate has a wall thickness of 0.3mm, a distance between grooves of 2mm, and through holes with a diameter of 2mm and a spacing of 5mm are processed on the side wall of the corrugated plate. Compared with fins, the welded corrugated plate can not only greatly reduce the weight of the equipment, but also provide a larger contact area for the equipment and improve the heat dissipation efficiency of the whole machine; compared with the traditional non-porous corrugated plate, the micro-perforated corrugated plate achieves the same area as the non-porous corrugated plate by shortening the groove spacing. At the same time, under the action of micropores, the micro-perforated plate achieves a sound-absorbing effect and reduces the noise of the whole machine.

[0035] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A highly integrated test fixture that is resistant to harsh environments, characterized by: It includes an outer shell and an internal circuit, wherein the internal circuit is installed inside the outer shell, and the outer shell includes an upper cover, a micro-perforated corrugated groove, a main box frame, a lower cover, a left panel, a right panel, a front panel and a rear panel, wherein the micro-perforated corrugated groove is installed above and below the main box frame respectively, the upper cover is installed above the corrugated groove above the main box frame, the lower cover is installed below the corrugated groove below the main box frame, the left panel is installed on the left side of the main box frame, the right panel is installed on the right side of the main box frame, the front panel is installed on the front of the main box frame, and the rear panel is installed on the rear of the main box frame.

2. The highly integrated test fixture for resisting harsh environments according to claim 1, characterized in that: The internal circuit includes a CPCI bus, a power module, an interface debugging module, a parallel I / O module, a digital I / O module, a communication module, a mainboard module, a liquid crystal display, an external keyboard and a built-in keyboard, wherein the CPCI bus is respectively connected to the power module, the interface debugging module, the parallel I / O module, the digital I / O module, the communication module and the mainboard module, wherein the power module is used to convert AC or DC power into a voltage used by the test tooling, the CPCI bus is used for voltage and signal transmission, the mainboard module is connected to the liquid crystal display via a VGA interface, the mainboard module is connected to the output end of the selection switch via a PS2 interface, and the input end of the selection switch is respectively connected to the external keyboard and the built-in keyboard.

3. The highly integrated test fixture for resisting harsh environments according to claim 1, characterized in that: An air duct is provided below the upper cover plate, and a fan is installed between the rear portion of the main box frame and the rear panel. The fan is used to extract heat from the air duct to ensure good heat dissipation of the test fixture.

4. The highly integrated test fixture for resisting harsh environments according to claim 1, characterized in that: Conductive rubber pads are provided at the connection between the main box frame and the front panel and the rear panel to ensure shielding and sealing.

5. The highly integrated test fixture for resisting harsh environments according to claim 1, characterized in that: A guide rail groove is arranged inside the main box frame, and the internal circuit is inserted into the guide rail groove inside the main box frame in the form of a plug-in board and is fixed by a wedge-shaped locking device on the guide rail groove.

6. The highly integrated test fixture for resisting harsh environments according to claim 1, characterized in that: The rear panel is provided with an external interface, and the internal circuit is connected to the external interface via a J30J series connector.

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