Automatic testing device for electrical performance parameters of electromechanical safety device

Abstract

The invention discloses an electromechanical safety device electrical performance parameter automatic test device comprising a test joint used for connecting an electromechanical safety device to be tested; the switch group comprises a plurality of switches; the test unit comprises a direct current low resistance tester, an insulation resistance tester, a voltage test multimeter, a current test multimeter and an oscilloscope; the direct current low resistance tester, the insulation resistance tester, the voltage test multimeter, the current test multimeter and the oscilloscope are respectively connected with the test connector through corresponding switches in the switch group; and the first control unit is in signal connection with the signal output ends of the direct current low resistance tester, the insulation resistance tester, the voltage test multimeter, the current test multimeter and the oscilloscope, and the first control unit is in signal connection with the switch group. Automatic testing of all electrical performance parameters can be realized.

Description

Technical Field

[0001] The invention belongs to the technical field of electrical performance parameter testing, and in particular relates to an automatic testing device for electrical performance parameters of an electromechanical safety device. Background Art

[0002] Safety devices are divided into mechanical, electromechanical and fully electronic types. During the development and production process, multiple electrical performance tests such as insulation resistance, contact resistance, status inspection, etc. should be carried out according to the requirements of QJ2750 to ensure the quality of product assembly.

[0003] At present, for the electrical performance test of electromechanical safety devices, since the types of electrical performance that need to be tested are diverse and the test methods for each type of electrical performance are different, the various parameters of the electrical performance of the existing electromechanical safety devices are tested by operators manually building test circuits, and the test circuit construction is complicated.

[0004] In order to improve the test efficiency, the patent with application number "CN201120308989.4" discloses "an integrated test bench for aircraft pyrotechnics", which includes a test box and a spare parts box. The test box includes a test unit, a control unit and a power supply unit electrically connected. The spare parts box is fixedly connected to the test box at the bottom of the test box. The test panel in the test unit is divided into four test areas for the ejection device, the engine, the gas generator and the safety actuator, and a common test interface area. The control circuit of the control unit mainly includes a control circuit for selecting the test point, a control circuit for controlling the power supply unit, and a control circuit for simulating the release of the aircraft pyrotechnics fuse. The control unit can simulate the actual working state of the aircraft when ignited through the control circuit.

[0005] The existing technology has the following defects: 1. It can only realize low resistance test under insurance state and ignition state, but cannot cover electrical performance test under other types or states.

[0006] 2. There are fewer types of electrical performance tests that can be detected. The electrical performance test items and types of electromechanical safety devices are diverse. The above patent is only for low resistance testing and cannot cover the insulation resistance test, voltage test, current test, low resistance test, waveform reading and judgment of electromechanical safety devices. Summary of the invention

[0007] In order to solve the problem that the existing test device can test few types of electrical performance parameters, the present invention proposes an automatic test device for electrical performance parameters of an electromechanical safety device, which can realize automatic testing of all electrical performance parameters.

[0008] The objective of the present invention is achieved through the following technical solutions: The present invention discloses an automatic testing device for electrical performance parameters of an electromechanical safety device, comprising: A test connector, the test connector being used to connect the electromechanical safety device to be tested; A switch group, the switch group comprising a plurality of switches; A test unit, the test unit comprising a DC low resistance tester, an insulation resistance tester, a voltage test multimeter, a current test multimeter and an oscilloscope, the DC low resistance tester, the insulation resistance tester, the voltage test multimeter, the current test multimeter and the oscilloscope are respectively connected to the test connector through corresponding switches in the switch group; A first control unit, wherein the first control unit is signal-connected to the signal output terminals of the DC low resistance tester, the insulation resistance tester, the voltage test multimeter, the current test multimeter and the oscilloscope, and the first control unit is signal-connected to the switch group; A power supply, wherein the power supply electrically connects the test unit and the first control unit through corresponding switches in the switch group; An explosion-proof module, the explosion-proof module being used to fix the electromechanical safety device to be tested; A control box, wherein the switch group, the test unit, the first control unit and the power supply are placed in the control box, the explosion-proof module is placed on one side of the control box and the test connector is arranged on a side of the control box close to the explosion-proof module.

[0009] The beneficial effects of the present invention are: 1. The present invention can measure all electrical performance parameters of the electromechanical safety device by simultaneously arranging a DC low resistance tester, an insulation resistance tester, a voltage test multimeter, a current test multimeter and an oscilloscope in a control box, and can measure a full range of electrical performance parameter types.

[0010] 2. The present invention has high safety performance by setting up an explosion-proof module. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] 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 or the description of the prior art 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.

[0012] Figure 1 It is a structural schematic diagram of an automatic testing device for electrical performance parameters of an electromechanical safety device of the present invention; Figure 2 Schematic diagram of the internal structure of the control box; Figure 3 It is a front view of the explosion-proof module and the feeding module of the present invention; Figure 4 It is a structural schematic diagram of the feeding module; Figure 5 The circuit diagram of the automatic testing device for the electrical performance parameters of the electromechanical safety device of the present invention is shown in FIG. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0014] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0016] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0017] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] The present invention discloses an automatic testing device for electrical performance parameters of an electromechanical safety device, such as Figures 1 to 5 As shown, it includes a test connector, a switch group 4, a test unit, a first control unit, a power supply 10, an explosion-proof module 2, and a control box 1, wherein the test connector is used to connect the electromechanical safety device to be tested and is arranged on the control box 1; the switch group includes a plurality of switches; the test unit includes a DC low resistance tester 9, an insulation resistance tester 8, a voltage test multimeter 5, a current test multimeter 7 and an oscilloscope 6, and the DC low resistance tester, the insulation resistance tester, the voltage test multimeter, the current test multimeter and the oscilloscope are respectively connected to the test unit through the corresponding switches in the switch group The first control unit is connected to the signal output end of the DC low resistance tester, the insulation resistance tester, the voltage test multimeter, the current test multimeter and the oscilloscope, and the first control unit is connected to the switch group signal; the power supply 10 is electrically connected to the test unit and the first control unit through the corresponding switch in the switch group 4; the explosion-proof module 2 is used to fix the electromechanical safety device to be tested; the switch group 4, the test unit, the first control unit and the power supply 10 are placed in the control box 1, and the explosion-proof module 2 is placed on one side of the control box 1.

[0020] The first control unit, i.e., the host computer of the entire device, realizes the coordinated control of the entire system. By arranging a DC low resistance tester 9, an insulation resistance tester 8, a voltage test multimeter 5, a current test multimeter 7 and an oscilloscope 6 in the control box 1, the insulation resistance test, voltage test, current test, low resistance test, waveform reading and judgment of the electromechanical safety device can be realized respectively, so as to realize the comprehensive test of the electrical performance parameters of the electromechanical safety device with high test efficiency.

[0021] like Figure 2 As shown, a first cavity and a second cavity are respectively arranged in the upper and lower parts of the control box 1; the switch group 4, insulation resistance tester 8, DC low resistance tester 9 and power supply 10 are placed in the first cavity; and the voltage test multimeter 5, current test multimeter 7 and oscilloscope 6 are placed in the second cavity.

[0022] Specifically, the switch group 4 is arranged on one side of the first cavity, and the insulation resistance tester 8, the DC low resistance tester 9 and the power supply 10 are arranged on the other side of the first cavity. The oscilloscope 6 is placed below the voltage test multimeter 5 and the current test multimeter 7.

[0023] In order to facilitate the transportation of the electromechanical safety device to be tested and ensure stability and safety during testing, it also includes a loading module 3 for conveying and fixing the electromechanical safety device to be tested; the explosion-proof module 2 includes a second control unit connected to the signal of the first control unit, a protective cover 11 covering the loading module 3, a pneumatic non-contact locking structure for locking the protective cover 11, and a first control switch 12 for controlling the state of the pneumatic non-contact locking structure, and the first control switch 12 signal is connected to the second control unit.

[0024] The explosion-proof module 2 also includes a loading detection unit 13 for detecting whether the loading module 3 and the electromechanical safety device to be tested are installed in place, an adsorption component for adsorbing the loading module 3 and a second control switch 14 for controlling the state of the adsorption component. The loading detection unit and the second control switch 14 are both signal-connected to the second control unit.

[0025] In order to facilitate the connection of the test connector to the electromechanical safety device to be tested, such as Figure 3 As shown, a fixing hole 15 for fixing the test connector can be provided on the protective cover 11.

[0026] The second control unit here is a lower computer, which realizes the control of the locking and unlocking status of the protective cover 11, the detection and locking of the loading module 3, and the coordinated work of the upper computer and the lower computer to realize the automatic testing of the electrical performance parameters of the electromechanical safety device by the entire device.

[0027] In order to facilitate the transportation of the electromechanical safety device, the loading module 3 includes a turnover vehicle 17 and a fixing seat 16 disposed on the turnover vehicle 17 for fixing the electromechanical safety device to be tested.

[0028] There are many ways to implement the switch group 4, and a matrix switch is preferably used, for example, a 4X24 matrix switch, the maximum switching voltage of each switch is 1000VDC, the maximum switching current is 2A, and the matrix switch line resistance is <0.5Ω.

[0029] In order to facilitate viewing of various electrical performance parameters of the electromechanical safety device, a display is also connected to the first control unit.

[0030] With the above device, the electromechanical safety device to be tested is installed on the fixing seat 16 and then pushed to the explosion-proof module 2. At this time, the feeding detection unit 13 detects that the turnover vehicle 17 has moved into place, and the second control unit controls the second control switch 14 to close, and the adsorption component adsorbs the turnover vehicle 17 to achieve the locking of the feeding module 3 and the electromechanical safety device. The electromechanical safety device is manually connected to the test connector and the protective cover 11 is covered. After the first control unit detects that the electromechanical safety device is connected in place, the first control switch 12 is closed, and the locking structure is actuated to achieve the locking of the protective cover 11. Next, the first control unit controls the opening of the corresponding switches of the DC low resistance tester, insulation resistance tester, voltage test multimeter, current test multimeter and oscilloscope respectively, until all low resistance tests, insulation resistance tests, conductivity tests, power-on tests, feedback voltage tests, open circuit tests, resistance tests and tests of the corresponding telemetry signals of the safety device are completed, so as to achieve the test collection of various electrical performance parameters.

[0031] Specifically, during the electrical performance parameter test, the first control unit obtains the electrical performance parameters of the electromechanical safety device to be tested. If the electrical performance parameters are lower or higher than the specified value, it is unqualified, the device alarms and stops the test. If the electrical performance parameters are within the specified value range, the values ​​are displayed on the display screen, the test data is saved, and all test instruments and switch groups are turned off.

[0032] By adopting the above device, automatic testing and collection of electrical performance parameters of electromechanical safety devices can be realized.

[0033] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations that do not deviate from the essence of the present invention based on the technical revelations disclosed by the present invention, and these variations and combinations are still within the protection scope of the present invention.

Claims

1. An automatic test device for electrical performance parameters of an electromechanical safety device, characterized in that: include: A test connector, the test connector being used to connect the electromechanical safety device to be tested; A switch group (4), the switch group comprising a plurality of switches; A testing unit, the testing unit comprising a DC low resistance tester (9), an insulation resistance tester (8), a voltage test multimeter (5), a current test multimeter (7) and an oscilloscope (6), the DC low resistance tester, the insulation resistance tester, the voltage test multimeter, the current test multimeter and the oscilloscope being connected to the test connector via corresponding switches in the switch group respectively; A first control unit, wherein the first control unit is signal-connected to the signal output terminals of the DC low resistance tester, the insulation resistance tester, the voltage test multimeter, the current test multimeter and the oscilloscope, and the first control unit is signal-connected to the switch group; A power supply (10), the power supply (10) electrically connecting the test unit and the first control unit via a corresponding switch in the switch group (4); An explosion-proof module (2), the explosion-proof module (2) being used to fix an electromechanical safety device to be tested; A control box (1), wherein the switch group (4), the test unit, the first control unit and the power supply (10) are placed inside the control box (1), and the explosion-proof module (2) is placed on one side of the control box (1).

2. The automatic testing device for electrical performance parameters of an electromechanical safety device according to claim 1 is characterized in that: The control box (1) has a first cavity and a second cavity disposed above and below, respectively. The switch group (4), the insulation resistance tester (8), the DC low resistance tester (9) and the power supply (10) are placed in the first cavity. The voltage test multimeter (5), the current test multimeter (7) and the oscilloscope (6) are placed in the second cavity.

3. The automatic testing device for electrical performance parameters of an electromechanical safety device according to claim 1 is characterized in that: It also includes a loading module (3) for conveying and fixing the electromechanical safety device to be tested; The explosion-proof module (2) comprises a second control unit connected to the first control unit by signal, a protective cover (11) covering the feeding module (3), a pneumatic non-contact locking structure for locking the protective cover (11), and a first control switch (12) for controlling the state of the pneumatic non-contact locking structure, wherein the first control switch (12) is connected to the second control unit by signal.

4. The automatic testing device for electrical performance parameters of an electromechanical safety device according to claim 3 is characterized in that: The explosion-proof module (2) further comprises a loading detection unit (13) for detecting whether the loading module (3) and the electromechanical safety device to be tested are installed in place, an adsorption component for adsorbing the loading module (3), and a second control switch (14) for controlling the state of the adsorption component, wherein the loading detection unit and the second control switch (14) are both signal-connected to the second control unit.

5. The automatic testing device for electrical performance parameters of an electromechanical safety device according to claim 3 is characterized in that: The loading module (3) comprises a trolley (17) and a fixing seat (16) arranged on the trolley (17) for fixing an electromechanical safety device to be tested.

6. The automatic testing device for electrical performance parameters of an electromechanical safety device according to claim 1, characterized in that: The switch group (4) is a matrix switch, the maximum switching voltage of each switch is 1000 VDC, the maximum switching current is 2 A, and the line resistance of the matrix switch is less than 0.5 Ω.

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