Bus bar power supply control assembly automatic test bench

Abstract

The utility model discloses an automatic test board for a bus bar power supply control assembly. The automatic test board comprises a front panel; the main connector is arranged on one side of the front panel and is electrically connected with the front panel; the test board maintenance module is arranged at one end, far away from the main connector, of the front panel and is used for monitoring the state of the automatic test board; the rear panel is provided with a test equipment interface, a power supply protection module and a power supply interface; the power interface is connected with an external power supply; the test equipment interface is used for being connected with test equipment; the power supply protection module is used for carrying out overcurrent protection on a circuit internal power supply. According to the utility model, various performance parameters of the bus bar power supply control assembly can be completely tested, and related fault hidden troubles of the bus bar power supply control assembly can be checked; and the test cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to busbar power control assembly automatic test bench technical field, especially a kind of busbar power control assembly automatic test bench. BACKGROUND

[0002] Busbar power control assembly (BPCU) provides control and protection between the main alternating current (AC) distribution busbar of aircraft, external power supply (EP) and auxiliary power unit (APU) generator power supply. It provides load monitoring for load distribution function, and provides overload protection for external power supply. BPCU works with integrated drive generator, APU starter, generator control unit (GCU), differential protection current transformer (DPCT) and flight cockpit control panel switch. BPCU provides contactor control for primary and secondary external power supply, and provides system protection for connecting busbar and main alternating current distribution busbar. BPCU also provides protection functions related to external power supply, flight cabin indicator light control and system load distribution control. Built-in test (BIT) can be used for fault isolation and indication.

[0003] The special automatic test equipment for testing at present cannot test various performance parameters of busbar power control assembly completely, and check related fault hidden dangers of busbar power control assembly.

[0004] Therefore, how to test various performance parameters of busbar power control assembly completely and check related fault hidden dangers of busbar power control assembly becomes a problem to be solved by the person skilled in the art. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of busbar power control assembly automatic test bench, to solve the foregoing problems existing in prior art.

[0006] In order to realize the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0007] A kind of busbar power control assembly automatic test bench, including front panel;

[0008] Main connector, it is arranged at one side of front panel, and is electrically connected with front panel;

[0009] Test bench maintenance module, it is arranged at the end of front panel away from main connector, and is used to monitor the state of automatic test bench;

[0010] Rear panel, test equipment interface, power protection module and power interface are arranged on it;

[0011] Power interface is used to connect with external power supply;

[0012] The test equipment interface is used for connecting with test equipment.

[0013] The power protection module is used for over-current protection of internal power supply of the circuit.

[0014] In some embodiments, the automatic test equipment is arranged between the main connector and the test bench maintenance module and connected with the front panel.

[0015] In some embodiments, the automatic test equipment is arranged between the main connector and the test bench maintenance module and connected with the front panel.

[0016] The power control is arranged at the end of the test bench maintenance module away from the main connector and connected with the front panel, and is used for controlling 220V mains switch, state indication and over-current protection.

[0017] In some embodiments, the test equipment interface comprises an industrial computer connection port, a multimeter connection port and an oscilloscope connection port.

[0018] In some embodiments, the test bench further comprises a relay switch board card, a relay matrix board card, a power supply board card, a communication board card, a transformer board card, an interconnection board card, a signal generator board card, a load board card and a power amplifier board card arranged in the interior of the test bench.

[0019] The utility model discloses a busbar power control assembly automatic test bench, including front panel, main connector is arranged at one side of front panel, and is connected with front panel electricity, test bench maintenance module is arranged at the end of front panel away from main connector, is used for the state monitoring of automatic test bench, rear panel is set up with test equipment interface, power protection module and power interface on it, power interface is used for connecting with external power, test equipment interface is used for connecting with test equipment, power protection module is used for over -current protection to the internal power supply of circuit. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the test block diagram of the utility model discloses a busbar power control assembly automatic test bench;

[0021] Figure 2 It is the front panel structure schematic drawing of the utility model discloses a busbar power control assembly automatic test bench;

[0022] Figure 3 It is the rear panel structure schematic drawing of the utility model discloses a busbar power control assembly automatic test bench;

[0023] Figure 4 It is the signal generation board card design schematic drawing of the utility model discloses;

[0024] Figure 5 is the integral connection frame diagram of the utility model;

[0025] Figure 6 is the pin definition diagram of the utility model's integral connection frame diagram;

[0026] Figure 7 is the working principle schematic diagram of the signal generating board card of the utility model;

[0027] Figure 8 is the working principle schematic diagram of the power amplification board card of the utility model;

[0028] Figure 9 is the schematic diagram of the load board card and transformer board of the utility model;

[0029] Figure 10 is the FPGA system diagram of the utility model;

[0030] Figure 11 is the front panel processing diagram of the utility model;

[0031] Figure 12 is the rear panel processing diagram of the utility model.

[0032] In the drawing, 1, front panel;2, main connector;3, test bench maintenance module;4, power supply control;5, rear panel;6, power supply interface;7, test equipment interface;8, power protection. DETAILED DESCRIPTION

[0033] In order to make the utility model's purpose, technical scheme and advantage more clearly, the following is combined with the drawing, and the utility model is further detailed.The specific embodiment described here is merely used to explain the utility model, and is not used to limit the utility model.

[0034] Referring to Figures 1 to 12 The busbar power supply control assembly automatic test bench shown in the drawing, including front panel 1;

[0035] Main connector 2 is arranged at one side of front panel 1 and is electrically connected with front panel 1;Main connector 2 is connected with BPCU through test cable.

[0036] Test bench maintenance module 3 is arranged at the end of front panel 1 away from main connector 2 and is used to monitor the state of automatic test bench;As standby function.

[0037] Rear panel 5 is provided with test equipment interface 7, power protection 8 module and power supply interface 6;

[0038] Power supply interface 6 is used to connect with external power supply;

[0039] The test equipment interface 7 is used for connecting with the test equipment; the test equipment interface 7 connects all test pins of the BPCU to the inside of the automatic test bench, and a special test interface is designed to facilitate the test connection with the tested part, the test equipment and the industrial computer.

[0040] The power protection 8 module is used for over-current protection of the internal power supply of the circuit.

[0041] In some specific embodiments, the automatic test equipment is arranged between the main connector 2 and the test bench maintenance module 3 and is connected with the front panel 1.

[0042] In some specific embodiments, the automatic test equipment is arranged between the main connector 2 and the test bench maintenance module 3 and is connected with the front panel 1.

[0043] The power control 4 is arranged at the end of the test bench maintenance module 3 away from the main connector 2 and is connected with the front panel 1; the power control 4 is used for controlling the 220V mains switch, the state indication and the over-current protection.

[0044] The power control 4: for the test of the BPCU and the required power supply of the internal board card of the automatic test bench, only the 220V mains is required to be connected outside to obtain the required power supply, so as to avoid the human error caused by the complex connection.

[0045] In some specific embodiments, the test equipment interface 7 comprises an industrial computer connection port, a multimeter connection port and an oscilloscope connection port.

[0046] In some specific embodiments, the relay switch board card, the relay matrix board card, the power supply board card, the communication board card, the transformer board card, the interconnection board card, the signal generator board card, the load board card and the power amplifier board card are arranged inside the test bench.

[0047] In the embodiment, the application mainly comprises the main connector 2, the power control 4, the maintenance module, the test interface and the power interface 6 outside; and the relay switch board card, the relay matrix board card, the power supply board card, the communication board card, the transformer board card, the interconnection board card, the signal generator board card, the load board card and the power amplifier board card inside. Figure 1All functions and performance tests of the BPCU are automatically executed by a self-programmed graphical visual test software program in the industrial computer, the industrial computer communicates with the test equipment such as the multimeter, oscilloscope, signal source and the like through a wireless router or a wired network port, and controls the mode conversion, functions and parameter settings and the like of the test equipment through the test software. Meanwhile, the industrial computer controls the automatic test table through a communication board card. The BPCU to be tested is connected with the automatic test table of the application through the connector J1, and the pins of the BPCU and the test equipment are controlled through the relay matrix board card and the switch board card. The automatic test table is connected with 220V mains, and the power required for the operation of each board card in the test table and the BPCU is converted by an internal power board card. The signal generation board card generates the analog signal required for the test of the BPCU, and the power amplifier board card, the transformer board card and the load board card process the analog signal to achieve the required parameters.

[0048] Data communication: data communication between the BPCU and the automatic test table and peripherals can be realized through a general serial data interface, and a shielding ground is designed on the interface to filter out external interference.

[0049] Relay switch board card and matrix board card design: the automatic test table designs the relay switch board card and matrix board card circuit required in the BPCU test process through the research on the pin definition and test steps of the 4-component busbar power supply control, so as to facilitate the mutual connection between various modules and provide necessary connection for the test. A field programmable logic array (hereinafter referred to as FPGA) with the characteristics of reprogrammable is selected as the core device to form an FPGA system. RS485 or WLAN is used for data interaction. When the FPGA receives communication data from RS485 / WLAN, the function domain and data domain are decoded, and the operation information, relay address and state information are transmitted to the FPGA through the internal communication interface, and the FPGA completes the operation of the subsequent functions.

[0050] A triode is used as a command control switch tube. When the base level is high, the triode is turned on, the negative control end of the relay is connected to the ground, so that the 5V coil of the relay is turned on, and the switch is attracted, so that the real switch is turned on.

[0051] The difference between the relay switch board card and the matrix board card is that the matrix board card connects the test equipment through the bus, and the relay switch is arranged in a matrix mode, which can freely control the on-off sequence of each port on the bus. When the number of pins to be tested is large, the number of relays can be reduced, and the pins of the components connected through the matrix can be reduced, which is converted to be directly connected in the adapter.

[0052] Signal generation board card design: the automatic test bench analyzes the signals required for testing the 4-component busbar power supply control assembly by using the minimum system design signal generation board card of FPGA. The digital signal that can be processed by the industrial computer is generated by programming the FPGA chip, the digital signal is converted into analog signal by the digital-to-analog conversion chip DAC8551, and the analog signal is preliminarily amplified by the operational amplifier.

[0053] Signal processing design: the analog signal generated by the signal generation board card is power amplified by the power amplifier board card composed of the TDA7498 power amplifier module, then the signal is boosted by the transformer board card, the boosted signal is connected to the load board card, and finally the required signal is introduced into the required pin through the relay switch board card, and the signal voltage, current, frequency and other parameters are monitored through the load board card.

[0054] The busbar power supply control 4-component automatic test bench can be internally connected and assembled according to the drawings shown in Figures 5 to 10 All resources and interfaces are integrated together; the panel can be processed according to the drawings shown in Figures 11 to 12 The hardware of the busbar power supply control 4-component automatic test bench can be completed through these drawings.

[0055] The utility model discloses a busbar power supply control 4-component automatic test bench, including front panel 1, main connector 2 sets up one side at front panel 1, with front panel 1 electricity is connected, test bench maintenance module 3 sets up the one end of front panel 1 away from main connector 2, is used to carry out state monitoring to automatic test bench, rear panel 5, is provided with test equipment interface 7, power protection 8 module and power interface 6 thereon, power interface 6 is used for connecting with external power supply, test equipment interface 7 is used for connecting with test equipment, and power protection 8 module is used for carrying out overcurrent protection to circuit internal power supply. The utility model not only can test the various performance parameters of busbar power supply control 4-component completely, but also can troubleshoot the related fault hidden danger of busbar power supply control 4-component, saves the test cost. The tester simulates the connection of the upper component of the airplane, connects through the positioning pin and the professional connector matched with the component, provides a good environment for the test of the component, can guarantee the stability and safety of signal and power supply, reduces the damage to the maintenance engineer and the component.

[0056] The above only is the preferred implementation of the utility model, should point out, for ordinary skill for the technical field, on the premise that without departing from the principle of the utility model, can make a number of improvements and refinements, these improvements and refinements also should view the protection scope of the utility model.

Claims

1. A busbar power control assembly automatic test bench, characterized in that, The utility model relates to a busbar power supply control assembly automatic test table, including: A front panel; A main connector arranged on one side of the front panel and electrically connected with the front panel; A test bench maintenance module arranged on the end of the front panel away from the main connector and used for state monitoring of an automatic test bench; A rear panel provided with a test equipment interface, a power supply protection module and a power supply interface; The power supply interface is used for connection with an external power supply; The test equipment interface is used for connection with a test equipment; The power supply protection module is used for overcurrent protection of internal power supply of a circuit.

2. The busbar power supply control assembly automatic test table according to claim 1, further comprising: An automatic test equipment arranged between the main connector and the test bench maintenance module and connected with the front panel.

3. The busbar power supply control assembly automatic test table according to claim 2, further comprising: A power supply control arranged on the end of the test bench maintenance module away from the main connector and connected with the front panel, and used for control of a 220V mains switch, state indication and overcurrent protection.

4. The busbar power supply control assembly automatic test table according to claim 3, wherein: The test equipment interface comprises an industrial computer connection port, a multimeter connection port and an oscilloscope connection port.

5. The busbar power supply control assembly automatic test table according to claim 4, further comprising: A relay switch board card, a relay matrix board card, a power supply board card, a communication board card, a transformer board card, an interconnection board card, a signal generator board card, a load board card and a power amplifier board card arranged inside the test bench. ​ ​

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