Airborne power distribution unit test monitoring device

Abstract

A test monitoring device for an airborne power distribution device belongs to the technical field of airborne power distribution and comprises an electric connector, a K1 binding post, a load binding post, a power distribution circuit indicating lamp, a control end 28V + binding post, a control end 28V-binding post, a contact end 28V + binding post, a contact end 28V-binding post, a working state indicating lamp, a control switch and a contact switch. The control end 28V + binding post is connected with the K1 binding post through the control switch, the control end 28V-binding post is connected with the electric connector, the contact end 28V + binding post is connected with the electric connector through the contact switch, and the contact end 28V-binding post is connected with the electric connector through the working state indicator lamp and the resistor. According to the invention, real-time monitoring can be carried out in the test process of an airborne power distribution device product, and whether the product works normally or not is verified in the test.

Description

Technical Field

[0001] The invention belongs to the technical field of airborne power distribution, and in particular relates to an airborne power distribution device test monitoring device. Background Art

[0002] The function of the onboard power distribution device is to provide 28V DC power to some equipment on the aircraft. The onboard power distribution device is mainly composed of a housing, a contactor, a circuit breaker, a diode, an electrical connector and a terminal. The 28V power signal from the aircraft is loaded onto the two terminals K1 and K2 of the onboard power distribution device. K1 and K2 are connected to the normally open contact and the normally closed contact of the main contact of the contactor inside the onboard power distribution device respectively. The other end of the normally open contact and the normally closed contact are connected to the circuit breaker inside the onboard power distribution device. After the circuit breaker is overloaded, they are connected to the corresponding interface of the electrical connector of the onboard power distribution device. The onboard power distribution device controls the contactor inside the power distribution device to close or disconnect through an external control signal. If the contactor is closed, the onboard power distribution device takes power from K1. If the contactor is not closed, the onboard power distribution device takes power from K2, so that the onboard power distribution device can provide 28V DC power to some electrical equipment on the aircraft.

[0003] Airborne power distribution device products need to be tested before leaving the factory or being used. During the test, the connection method of the monitoring cable is as follows: Figure 1 As shown, the existing test and detection equipment can only test the functional performance of the product before and after the airborne power distribution device product test, and cannot perform real-time monitoring during the product test, and cannot verify whether the product is working normally during the test. Summary of the invention

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an airborne power distribution device test monitoring device to achieve real-time monitoring of the airborne power distribution device product test process and verify whether the product is working normally during the test.

[0005] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0006] A test monitoring device for an airborne power distribution device comprises an electric connector for connecting the airborne power distribution device, a K1 terminal, a load terminal for connecting a load, a power distribution circuit indicator light, a control terminal 28V+ terminal for connecting a DC power supply, a control terminal 28V- terminal, a contact terminal 28V+ terminal, a contact terminal 28V- terminal, a working status indicator light, a control switch, and a contact switch. The control terminal 28V+ terminal is connected to the K1 terminal via the control switch, the control terminal 28V- terminal is connected to the electric connector, the contact terminal 28V+ terminal is connected to the electric connector via the contact switch, and the contact terminal 28V- terminal is connected to the electric connector via the working status indicator light and a resistor. A plurality of groups of load terminals and power distribution circuit indicator lights are respectively arranged, and the number thereof matches the number of power distribution circuits of the airborne power distribution device to be tested. One end of a plurality of load terminals is connected in parallel to the electric connector, and the other end is connected to the contact terminal 28V- terminal. Each power distribution circuit indicator light is connected in series with a resistor and then connected in parallel to both ends of each load terminal.

[0007] Furthermore, the electrical connector, K1 terminal, load terminal, distribution circuit indicator light, control end 28V+ terminal, control end 28V- terminal, contact end 28V+ terminal, contact end 28V- terminal, working status indicator light, control switch, and contact switch are arranged on an aluminum profile box, and its terminal, display terminal, and operation terminal are integrated on the box panel.

[0008] Furthermore, the electrical connector model is JY27467T25B43PN.

[0009] Furthermore, the control switch and contact switch are toggle switches, the maximum current allowed to pass through the switch is 15A, the number of digits is 2, and the number of poles is single.

[0010] Furthermore, the K1 terminal, load terminal, control end 28V+ terminal, control end 28V- terminal, contact end 28V+ terminal, and contact end 28V- terminal are M6×45mm pure copper terminal blocks that carry 50A current, and the terminal nuts are high-voltage insulating nuts.

[0011] The beneficial effects of the present invention are as follows: the airborne power distribution device test monitoring device of the present invention can realize the monitoring of each power distribution circuit, and can monitor during the product load test, and the plug-in wiring method of the terminal head is simple to operate, improves efficiency and has a stable connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a monitoring connection diagram for the airborne power distribution device product test;

[0013] Figure 2 It is a schematic diagram of a panel of an airborne power distribution device test monitoring device of the present invention;

[0014] Figure 3 It is a schematic diagram of the circuit principle of the airborne power distribution device test monitoring device of the present invention;

[0015] Figure 4 A schematic diagram of line connections for the monitoring station of the present invention to monitor whether the onboard power distribution device is operating normally;

[0016] Figure 5 The diagram is a connection diagram of the load test circuit of the monitoring station of the present invention for monitoring the on-board power distribution device.

[0017] In the figure: 1 is the electrical connector, 2 is the K1 terminal, 3 is the contact switch, 4 is the load terminal, 5 is the distribution circuit indicator light, 6 is the control end 28V+ terminal, 7 is the control end 28V- terminal, 8 is the contact end 28V+ terminal, 9 is the contact end 28V- terminal, 10 is the working status indicator light, and 11 is the control switch. DETAILED DESCRIPTION

[0018] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0019] The present invention provides an airborne distribution device test monitoring device, which is used to perform real-time monitoring of distribution device products in tests such as environment, electromagnetic compatibility, power supply compatibility, functional performance, etc., and judge whether the contactor in the product is working normally and the on and off of each distribution circuit by the on and off of the indicator light. The circuit breaker point of the airborne distribution device test monitoring device connected to the load is led out to the panel indicator light of the monitoring station, so that each distribution circuit can be monitored when the product is tested. When the product needs to be connected to the load, the panel terminal and the load can be connected with a cable, which can be quickly connected and disassembled.

[0020] An airborne power distribution device test monitoring device of the present invention comprises an electrical connector 1 and a K1 terminal 2, wherein the electrical connector 1 and the K1 terminal 2 are used to connect an airborne power distribution device to be tested via a monitoring cable; a load terminal 4 is used to connect a load; a power distribution circuit indicator light 5 is used to monitor whether the power supply of each circuit of the product is normal; a control end 28V+ terminal 6, a control end 28V- terminal 7, a contact end 28V+ terminal 8, and a contact end 28V- terminal 9 are used to connect a DC power supply; a working status indicator light 10, a control switch 11, and a contact switch 3.

[0021] The control terminal 28V+ terminal 6 is connected to the K1 terminal 2 via the control switch 11, the control terminal 28V- terminal 7 is connected to the F point of the electrical connector 1, the contact terminal 28V+ terminal 8 is connected to the E point of the electrical connector 1 via the contact switch 3, and the contact terminal 28V- terminal 9 is connected to the R point of the electrical connector 1 via the working status indicator light 10 and a 10kΩ resistor.

[0022] Specifically, the electrical connector 1 can be an electrical connector of model JY27467T25B43PN, and the connector contact pair model is 20 16# and 23 20#. A plurality of groups of load terminals 4 and power distribution circuit indicator lights 5 are respectively provided, and the number thereof matches the number of power distribution circuits of the onboard power distribution device to be tested. One end of a plurality of load terminals 4 is connected in parallel to the electrical connector 1, and the other end is connected to the contact end 28V-terminal 9, and each power distribution circuit indicator light 5 is connected in series with a 10kΩ resistor and then connected in parallel to both ends of each load terminal 4. In this embodiment, 19 groups of load terminals 4 and power distribution circuit indicator lights 5 are arranged, and each of the 19 points of the electrical connector 1 is connected in the same manner as the power distribution circuit indicator lights 5, the resistors and the load terminals 4. For example, point A of the electrical connector 1 is connected to terminal X1: A, a 10kΩ resistor is connected to the indicator light X1: A and is connected in parallel to terminal X1: A, and is connected to terminal contact 28V- after being connected in parallel; point B of the electrical connector JX1 is connected to terminal X1: B, a 10kΩ resistor is connected to the indicator light X1: B and is connected in parallel to terminal contact 28V- after being connected in parallel; point L of the electrical connector JX1 is connected to terminal X2: A, a 10kΩ resistor is connected to the indicator light X2: A and is connected in parallel to terminal X2: A, and is connected to terminal contact 28V- after being connected in parallel, and so on. For details of the wiring relationship of the 19 routes, see Figure 3 .

[0023] Specifically, the electrical connector 1, K1 terminal 2, load terminal 4, distribution circuit indicator light 5, control terminal 28V+ terminal 6, control terminal 28V- terminal 7, contact terminal 28V+ terminal 8, contact terminal 28V- terminal 9, working status indicator light 10, control switch 11, and contact switch 3 are arranged on an aluminum profile box, the outer dimensions of the box are 320mm×240mm×150mm, the shell color is sprayed with TB06-9 zinc yellow primer and sprayed with TS70-60 black polyurethane semi-gloss magnetic paint, and its terminal, display terminal, and operation terminal are integrated on the box panel, such as Figure 2 shown.

[0024] Specifically, the control switch 11 and the contact switch 3 are toggle switches, the maximum current allowed to pass through the switch is 15A, the number of digits is 2, and the number of poles is single-pole. The K1 terminal 2, the load terminal 4, the control end 28V+ terminal 6, the control end 28V- terminal 7, the contact end 28V+ terminal 8, and the contact end 28V- terminal 9 are made of M6×45mm pure copper terminal blocks, carrying 50A current, and the terminal nuts are high-voltage insulating nuts. The distribution circuit indicator light 5 and the working status indicator light 10 are made of high-brightness light-emitting tubes for status indication. The indicator lights are shelf products for easy replacement.

[0025] According to the environmental conditions and working current of the wire, as well as the crimping relationship with the connector contact pair, in order to improve the reliability of the cable, the wire is selected with the same specifications as the product. The wire implements GJB773 / 8A-2000, suitable for aviation, aerospace, ships, weapons and equipment and instrument line connection. It is a special wire for military products. The operating environment temperature is -65℃~200℃, and the rated voltage is below 600V. It has the characteristics of high and low temperature resistance, oil resistance, water resistance, corrosion resistance, flame retardancy, light and strong, and excellent insulation performance. It is used in places with high ambient temperature and harsh conditions. The cross-sectional area and other parameters of the wire are shown in Table 1.

[0026] Table 1 Cross-sectional area and parameters of conductors

[0027] <![CDATA[Cross-sectional area of the wire (mm 2 )]]> Wire Gauge 0.4 22 0.6 20 1 18 1.2 16 3 12 5 10

[0028] The length of the wire is made according to the requirements, and the outer protection adopts canvas sheath. In order to ensure the reliability of the agency connection, the wire and the connector are crimped.

[0029] Monitor whether the onboard power distribution device is working properly:

[0030] Connection method: Figure 4 As shown, the electrical connectors (X1, X2, X3, X4) and the terminals on the airborne power distribution device are connected to the electrical connector 1 and K1 terminal 2 of the monitoring device of the present invention via monitoring cables, the control 28V+6 of the monitoring device of the present invention is connected to the + of the 28V DC power supply, and the control 28V-7 is connected to the - of the 28V DC power supply; the contact 28V+8 of the monitoring device of the present invention is connected to the + of another 28V DC power supply, and the contact 28V-9 is connected to the - of the 28V DC power supply, the control switch 11 and the contact switch 3 of the monitoring device of the present invention are both turned on, if the working status indicator light 10 and the distribution circuit indicator light 5 are on, the airborne power distribution device is working normally, if they are not on or flashing, the airborne power distribution device is working abnormally.

[0031] Monitoring of load test of onboard power distribution device:

[0032] Connection method: Figure 5 As shown, the electrical connectors (X1, X2, X3, X4) on the onboard power distribution device are connected to the electrical connector 1 of the monitoring device of the present invention via a monitoring cable, the load terminal 4 on the monitoring device of the present invention is connected to the load via a load cable, the 28V DC power supply - is connected to the load -, and the 28V DC power supply + is connected to the terminal of the onboard power distribution device. After the 28V DC power supply is supplied, the monitoring device of the present invention can perform load test monitoring of the product. If the indicator light 5 of the monitoring device of the present invention is on, the load test is qualified. If it is not on or flashing, it is unqualified.

[0033] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Alterations, modifications, substitutions and variations of the above embodiments by a person skilled in the art are all within the scope of the present invention.

Claims

1. An airborne power distribution device test monitoring device, characterized in that: The invention comprises an electric connector (1) for connecting an onboard power distribution device, a K1 terminal (2), a load terminal (4) for connecting a load, a power distribution circuit indicator light (5), a control terminal 28V+ terminal (6) for connecting a DC power supply, a control terminal 28V- terminal (7), a contact terminal 28V+ terminal (8), a contact terminal 28V- terminal (9), a working status indicator light (10), a control switch (11), and a contact switch (3). The control terminal 28V+ terminal (6) is connected to the K1 terminal (2) via the control switch (11), and the control terminal 28V- terminal (7) is connected to the electric connector. (1), the contact end 28V+ terminal (8) is connected to the electric connector (1) via the contact switch (3), the contact end 28V- terminal (9) is connected to the electric connector (1) via the working status indicator light (10) and the resistor, and the load terminals (4) and the distribution circuit indicator lights (5) are respectively arranged in a plurality of groups, the number of which matches the number of distribution circuits of the onboard power distribution device to be tested, one end of a plurality of load terminals (4) is connected in parallel to the electric connector (1), and the other end is connected to the contact end 28V- terminal (9), and each distribution circuit indicator light (5) is connected in series with a resistor and then connected in parallel to both ends of each load terminal (4).

2. The airborne power distribution device test monitoring device according to claim 1, characterized in that: The electrical connector (1), K1 terminal (2), load terminal (4), power distribution circuit indicator light (5), control end 28V+ terminal (6), control end 28V- terminal (7), contact end 28V+ terminal (8), contact end 28V- terminal (9), working status indicator light (10), control switch (11), and contact switch (3) are arranged on a box body of aluminum profile, and the terminal, display terminal, and operation terminal are integrated on the box body panel.

3. The airborne power distribution device test monitoring device according to claim 1, characterized in that: The model of the electrical connector (1) is JY27467T25B43PN.

4. The airborne power distribution device test monitoring device according to claim 1, characterized in that: The control switch (11) and the contact switch (3) are toggle switches, the maximum current allowed to pass through the switch is 15A, the number of digits is 2, and the number of poles is single.

5. The airborne power distribution device test monitoring device according to claim 1, characterized in that: The K1 terminal (2), the load terminal (4), the control end 28V+ terminal (6), the control end 28V- terminal (7), the contact end 28V+ terminal (8), and the contact end 28V- terminal (9) are made of M6×45mm pure copper terminal blocks, carrying a current of 50A, and the terminal nuts are high-voltage insulating nuts.

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