Automatic testing equipment and method for horizontal tail distribution box

Abstract

The invention provides a horizontal tail distribution box automatic test device and method, the device comprises a three-phase AC power supply, a horizontal tail distribution box automatic test device electrical cabinet and a self-made simulation load, the three-phase AC power supply is used for providing a heating power supply in a test process, and the horizontal tail distribution box automatic test device electrical cabinet provides power for a tested horizontal tail distribution box. Circuit control required during each function test is provided, sampling resistance required by tests of a short-circuit sensor and an open-phase sensor in a tested product is provided, and heating current, short-circuit sensor output, open-phase sensor output and controllable silicon voltage drop tests are carried out; the self-made simulation load is used for simulating an airplane horizontal tail heater; related circuits are formed by the data acquisition unit, the switch module, the A / D conversion module, the programmable logic controller and the sampling resistor, and the signal input control function, the heating current measurement, the voltage at the two ends of the sampling resistor and the voltage at the two ends of the silicon controlled rectifier required by the performance test of the horizontal tail distribution box are met.

Description

Technical Field

[0001] The present application belongs to the technical field of ice detection, and specifically relates to an automatic testing device and method for a horizontal tail distribution box. Background Art

[0002] The company's horizontal tail distribution box is an important component of the aircraft's horizontal tail anti-icing system. Its performance needs to be tested after manufacturing, and a special equipment is needed to meet the testing requirements. Summary of the invention

[0003] Purpose of the invention: To design an automatic test equipment for a horizontal tail distribution box, which has the following functions: to provide the three-phase AC power supply and simulated load required for the test; to provide the DC power supply required by the tested product; to have on-off control of the input signal required for different functional tests; to measure the current output by the three-phase AC power supply; to provide the sampling resistor required for the performance test of the tested product; to test the voltage across the sampling resistor and the thyristor; to automatically store the test data and judge whether the data is qualified.

[0004] In the first aspect, the present application provides an automatic test device for a horizontal tail distribution box, including a three-phase AC power supply, an electrical cabinet for the automatic test device for the horizontal tail distribution box, and a self-made simulated load, wherein the three-phase AC power supply is used to provide a heating power supply during the test, and the electrical cabinet for the automatic test device for the horizontal tail distribution box provides power to the horizontal tail distribution box under test, provides the circuit control required for each function test, provides the sampling resistor required for the internal short-circuit sensor and the phase loss sensor test of the tested product, and performs heating current, short-circuit sensor output, phase loss sensor output, and controllable silicon voltage drop tests; the self-made simulated load is used to simulate the horizontal tail heater of the aircraft; the output end of the three-phase AC power supply is connected to the power input end of the electrical cabinet by a wire; the three-phase AC power output of the electrical cabinet is connected to the three-phase AC terminal of the horizontal tail distribution box under test by a wire; the output end of the horizontal tail distribution box under test is connected to the self-made simulated load by a wire; the test port of the horizontal tail distribution box under test is connected to the test port of the electrical cabinet by a wire;

[0005] Among them, the electrical cabinet of the automatic test equipment of the horizontal tail distribution box is composed of a display, an industrial computer, a DC power supply, a programmable logic controller, an A / D conversion module, a sampling resistor, a data acquisition unit and a switch unit, an AC current transmitter, a relay, and a cabinet.

[0006] Preferably, the internal sampling resistor is connected to both ends of the short-circuit sensor and the phase loss sensor of the product under test, and after being collected by the data acquisition unit, it is transmitted to the industrial computer through RS232 communication and displayed through the test software interface.

[0007] Preferably, the AC current transmitter is installed inside the electric cabinet, and the current of the heating loop circuit is measured by the AC current transmitter, which is converted into a DC voltage signal, collected by the A / D conversion module, and then transmitted to the programmable logic controller. The programmable logic controller calculates the actual current size according to the linear relationship of the transmitter, transmits it through communication, and displays it on the test software interface.

[0008] Preferably, the voltage across the short-circuit sensor sampling resistor, the voltage across the phase loss sensor sampling resistor, and the voltage across the internal thyristor of the tested product are measured through the data acquisition unit, and the multiplexing function is realized through the switch unit to perform 23-channel voltage measurement; the test data is transmitted in the form of communication between the acquisition unit and the industrial computer, decoded by special test software, and then displayed through the interface of the test software.

[0009] Preferably, a programmable logic device is used to control the internal time relay, counter, and output relay during different functional tests to control the on and off of the input signal required for the functional test and limit the time when the control signal is connected to protect the product under test.

[0010] Preferably, the programmable logic controller, A / D conversion module, DC power supply, AC current transmitter, sampling resistor installation, industrial computer, data acquisition unit and switch module are inside the cabinet, and the display screen is installed on the cabinet panel installation panel; the programmable logic controller is connected to the A / D conversion module through a dedicated communication line; the programmable logic controller is connected to the industrial computer through a dedicated communication port; the output port of the AC current transmitter is connected to the sampling port of the A / D conversion module through a wire; the sampling resistor is connected to the corresponding pin of the socket of the product under test, and is also connected to the switch module port; the socket pin corresponding to the thyristor of the product under test is connected to the switch module port; the switch module is plugged into the connection hole of the data acquisition unit; the data acquisition unit is connected to the industrial computer through a dedicated communication port; the display is connected to the industrial computer through a dedicated video line.

[0011] Preferably, the test software is specially compiled based on industrial computers and programmable logic controller application software.

[0012] In a second aspect, the present application also provides a method for automatically testing a horizontal tail distribution box, the testing method using the testing device as described above, the testing method is:

[0013] After the equipment is started, it will conduct self-test, internal alarm information check and communication status check. After the self-test passes, the equipment parameters will be initialized. The output voltage and current protection parameters of the three-phase AC power supply will be configured through the industrial computer, and the three-phase AC power supply output and DC power supply output will be controlled. The programmable logic controller will drive the relay to output the control signal through a certain output port, and start the test cycle counting and test time timing.

[0014] The industrial computer reads the flag bit of the output port of the programmable logic controller, and controls the multiplexing module of the data acquisition unit to open the acquisition channel according to the flag bit information. At the same time, the programmable logic controller collects current data through the A / D conversion module and the current sensor and sends it to the industrial computer;

[0015] When the internal timing of the programmable logic controller exceeds the test time, the output port is closed to stop outputting the control signal, the industrial computer simultaneously closes the acquisition channel of the data acquisition unit, and the internal timer of the programmable logic controller is reset. When the counting cycle does not meet the test quantity requirement, the above test steps are repeated until the test is completed;

[0016] The host computer automatically analyzes the test data, sends the test results to the test interface, controls the three-phase AC power supply and DC power supply to stop output and stop the test, saves the test data and results to a file, and generates a test report, thereby realizing the automated test of the horizontal tail distribution box.

[0017] This application has the following technical effects:

[0018] The automatic test equipment for the flat tail distribution box provides the power required for the test. It forms relevant circuits through data acquisition unit, switch module, A / D conversion module, programmable logic controller, sampling resistor and other components, which meets the signal input control function, heating current measurement, voltage measurement at both ends of the sampling resistor and voltage measurement at both ends of the thyristor required for the performance test of the flat tail distribution box. The test connection identification is easy to operate, with a high degree of automation and great practical application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a functional block diagram of an automatic test device for a horizontal tail power distribution box;

[0020] Figure 2 The present invention is a flow chart of a testing method of an automatic testing device for a horizontal tail distribution box. DETAILED DESCRIPTION

[0021] The present application provides an automatic test device for a horizontal tail power distribution box, which comprises a three-phase AC power supply, an automatic test device electrical cabinet for the horizontal tail power distribution box, and a self-made simulated load.

[0022] The three-phase AC power supply provides the heating power supply required during the test; the self-made simulated load simulates the aircraft horizontal tail heater; the electrical cabinet of the automatic test equipment of the horizontal tail distribution box controls the input signal required during the test and provides the sampling resistor required for the test; and measures the voltage at the heating current, the two ends of the sampling resistor, and the two ends of the internal thyristor of the tested product. The wire connects the output end of the three-phase AC power supply to the power input end of the electrical cabinet; the three-phase AC power output of the electrical cabinet is connected to the three-phase AC terminal of the horizontal tail distribution box under test through the wire; the output end of the horizontal tail distribution box under test is connected to the self-made simulated load using the wire; the test port of the horizontal tail distribution box under test is connected to the test port of the electrical cabinet through the wire.

[0023] The electrical cabinet of the automatic test equipment of the flat tail distribution box is composed of a display, an industrial computer, a DC power supply, a programmable logic controller, an A / D conversion module, a sampling resistor, a data acquisition unit and a switch unit, an AC current transmitter, a cabinet, etc. The programmable logic controller, the A / D conversion module, the DC power supply, the AC current transmitter, the sampling resistor are installed, the industrial computer, the data acquisition unit and the switch module are inside the cabinet, and the display screen is installed on the cabinet panel installation panel. The programmable logic controller is connected to the A / D conversion module through a dedicated communication line; the programmable logic controller is connected to the industrial computer through a dedicated communication port; the output port of the AC current transmitter is connected to the sampling port of the A / D conversion module through a wire; the sampling resistor is connected to the corresponding plug of the socket of the product under test, and is also connected to the switch module port; the socket plug corresponding to the thyristor of the product under test is connected to the switch module port; the switch module is plugged into the connection hole of the data acquisition unit; the data acquisition unit is connected to the industrial computer through a dedicated communication port; the display is connected to the industrial computer through a dedicated video line.

[0024] The present invention also proposes a test method based on the test device as described above, wherein the test method process is as follows: after the device is started, a self-check is performed, internal alarm information is checked, and communication status is checked. After the self-check is passed, the device parameters are initialized, and the output voltage and current protection parameters of the three-phase AC power supply are configured by an industrial computer, and the output of the three-phase AC power supply and the DC power supply are controlled; the programmable logic controller drives the relay to output a control signal through a certain output port, and starts the test cycle counting and the test time timing; the industrial computer reads the flag bit of the output port of the programmable logic controller, and controls the multiplexing module of the data acquisition unit to open the acquisition channel according to the flag bit information, and the programmable The logic controller collects current data through the A / D conversion module and the current sensor and sends it to the industrial computer; when the internal timing of the programmable logic controller exceeds the test time, the output port is closed to stop outputting the control signal, and the industrial computer simultaneously closes the acquisition channel of the data acquisition unit, and the internal timer of the programmable logic controller is reset. When the counting cycle does not meet the test quantity requirement, the above test steps are repeated until the test is completed; the host computer automatically analyzes the test data, sends the test results to the test interface, controls the three-phase AC power supply and DC power supply to stop output and stop the test, saves the test data and results to a file, and generates a test report, thereby realizing the automated test of the horizontal tail distribution box.

[0025] The following is combined with Figure 1 and attached Figure 2 The present application is further described with examples:

[0026] See also Figure 1 The automatic test equipment for a horizontal tail distribution box of the present invention is composed of a three-phase AC power supply, an electric cabinet for the automatic test equipment for a horizontal tail distribution box and a self-made simulated load; the output end of the three-phase AC power supply is connected to the power input end of the electric cabinet by a wire; the three-phase AC power output of the electric cabinet is connected to the three-phase AC terminal of the horizontal tail distribution box under test by a wire; the output end of the horizontal tail distribution box under test is connected to the self-made simulated load by a wire; the test port of the horizontal tail distribution box under test is connected to the test port of the electric cabinet by a wire.

[0027] See also Figure 1, the three-phase AC power supply provides heating power during the test; the self-made simulated load simulates the aircraft horizontal tail heater; the horizontal tail distribution box automatic test equipment electrical cabinet controls the input signal required during the test and provides the sampling resistor required for the test; and measures the heating current, the voltage at both ends of the sampling resistor, and the voltage at both ends of the internal thyristor of the tested product. The horizontal tail distribution box automatic test equipment electrical cabinet is installed with components such as a display, a programmable logic controller, an industrial computer, an A / D conversion module, an AC current transmitter, a sampling voltage, a data acquisition unit, and a switch unit. The programmable logic controller, A / D conversion module, DC power supply, AC current transmitter, sampling resistor installation, industrial computer, data acquisition unit, and switch module are inside the cabinet, and the display screen is installed on the cabinet panel installation panel. The programmable logic controller is connected to the A / D conversion module through a dedicated communication line; the programmable logic controller is connected to the industrial computer through a dedicated communication port; the output port of the AC current transmitter is connected to the sampling port of the A / D conversion module through a wire; the sampling resistor is connected to the corresponding pin of the socket of the product under test, and is also connected to the port of the switch module; the socket pin corresponding to the thyristor of the product under test is connected to the port of the switch module; the switch module is plugged into the connection hole of the data acquisition unit; the data acquisition unit is connected to the industrial computer through a dedicated communication port; the display is connected to the industrial computer through a dedicated video line.

[0028] When testing, use the wire to connect the three-phase AC power output of the electric cabinet to the three-phase AC terminal of the tested horizontal tail distribution box through the wire; use the wire to connect the output end of the tested horizontal tail distribution box to the self-made simulated load; use the wire to connect the test port of the tested horizontal tail distribution box to the test port of the electrical cabinet. Then start the industrial computer and open the special test software.

[0029] During the test, the programmable logic controller controls the internal time relay, counter, and output relay to complete the on-off control of the input signal required during the test. The time relay controls the duration of power on and off, and the counter records the number of completed cycles. The AC current transmitter measures the current in the heating circuit, converts it into a DC voltage signal, and transmits it to the programmable logic controller after being collected by the A / D conversion module. The programmable logic controller calculates the actual current according to the linear relationship of the transmitter. The data acquisition unit measures the voltage across the sampling resistor of the short-circuit sensor, the voltage across the sampling resistor of the phase loss sensor, and the voltage across the internal thyristor of the tested product. The switch unit realizes the multiplexing function and performs 23 voltage measurements. The interface of the special test software provides a human-machine interface for data display and operation; the special software completes the data conversion and storage functions, and displays them through the interface of the special test software; at the same time, a special report document is compiled according to the test requirements, and the test data is stored in the form of a report document, and can be printed out. The human-machine interface and running program are specially compiled based on the industrial computer application software.

[0030] The test method process is as follows: after the equipment is started, self-checking, internal alarm information checking and communication status checking are performed, and after the self-checking passes, the equipment parameters are initialized, and the output voltage and current protection parameters of the three-phase AC power supply are configured through the industrial computer, and the output of the three-phase AC power supply and the DC power supply are controlled; the programmable logic controller drives the relay to output a control signal through a certain output port, and starts the test cycle counting and test time timing; the industrial computer reads the flag bit of the output port of the programmable logic controller, and controls the multiplexing module of the data acquisition unit to open the acquisition channel according to the flag bit information, and the programmable logic controller collects current data through the A / D conversion module and the current sensor and sends it to the industrial computer; when the timing inside the programmable logic controller exceeds the test time, the output port is closed to stop outputting the control signal, the industrial computer simultaneously closes the acquisition channel of the data acquisition unit, and the internal timer of the programmable logic controller is reset, and when the counting cycle does not meet the test quantity requirement, the above test steps are repeated until the test is completed; the host computer automatically analyzes the test data, sends the test results to the test interface, controls the three-phase AC power supply and the DC power supply to stop outputting and stop testing, saves the test data and results to a file, and generates a test report, thereby realizing the automatic test of the horizontal tail power distribution box.

[0031] In other embodiments of the present application, the three-phase AC power supply uses Huayi 6345; the display uses NPM-5170GS, the industrial computer uses IPC-610L-MB, the programmable logic controller uses Mitsubishi FX3U-16M, the A / D conversion module uses Mitsubishi FX3U-4A / D, the AC current transmitter uses JLT4I2P1 from Precision Electronics, and the data acquisition unit uses DAQ970A. The switch unit uses DAQM901A; the DC power supply uses Chaoyang Power 4NIC-TQ320HK; the sampling resistor uses RJ48-1 / 4-500Ω±0.1% and RJ48-1 / 4-50Ω±0.1%; the cabinet uses Rittal TS8; the self-made load-pass RX24 resistor is customized and manufactured in parallel.

[0032] In other embodiments of the present application, a horizontal tail distribution box automatic test equipment is provided, which includes an external three-phase adjustable AC power supply, an electrical cabinet for the horizontal tail distribution box automatic test equipment, and a self-made simulated load. The three-phase adjustable AC power supply is used to provide three-phase AC power to the horizontal tail distribution box under test during the test. The self-made simulated load is manufactured according to the resistance and power of the aircraft horizontal tail heater, and is used to simulate the aircraft horizontal tail heater during the test. The electrical cabinet of the horizontal tail distribution box automatic test equipment is used to provide the circuit control required for each function test during the horizontal tail distribution box test; the electrical cabinet monitors the current in the heater power circuit during the test; the electrical cabinet provides a DC power supply to the horizontal tail distribution box under test; the electrical cabinet provides a short-circuit sensor sampling resistor and a phase loss sensor sampling resistor; the electrical cabinet measures the voltage across the short-circuit sensor sampling resistor and the phase loss sensor sampling resistor and the voltage drop across the thyristor of the horizontal tail distribution box under test. Use a wire to connect the output end of the three-phase AC power supply to the power input end of the electrical cabinet; use a wire to connect the three-phase AC power output of the electrical cabinet to the three-phase AC terminal of the horizontal tail distribution box under test through a wire; use a wire to connect the output end of the horizontal tail distribution box under test to the self-made simulated load; use a wire to connect the test port of the horizontal tail distribution box under test to the test port of the electrical cabinet.

Claims

1. An automatic test device for a horizontal tail distribution box, characterized in that: It includes a three-phase AC power supply, an electrical cabinet for automatic testing equipment of a horizontal tail distribution box, and a self-made simulated load. The three-phase AC power supply is used to provide a heating power supply during the test. The electrical cabinet for automatic testing equipment of the horizontal tail distribution box provides power to the horizontal tail distribution box under test, provides the circuit control required for each function test, provides the sampling resistance required for the internal short-circuit sensor and the phase loss sensor test of the tested product, and performs heating current, short-circuit sensor output, phase loss sensor output, and controllable silicon voltage drop tests; the self-made simulated load is used to simulate the horizontal tail heater of the aircraft; the output end of the three-phase AC power supply is connected to the power input end of the electrical cabinet by a wire; the three-phase AC power output of the electrical cabinet is connected to the three-phase AC terminal of the horizontal tail distribution box under test by a wire; the output end of the horizontal tail distribution box under test is connected to the self-made simulated load by a wire; the test port of the horizontal tail distribution box under test is connected to the test port of the electrical cabinet by a wire; Among them, the electrical cabinet of the automatic test equipment of the horizontal tail distribution box is composed of a display, an industrial computer, a DC power supply, a programmable logic controller, an A / D conversion module, a sampling resistor, a data acquisition unit and a switch unit, an AC current transmitter, a relay, and a cabinet.

2. The automatic test equipment for the horizontal tail distribution box according to claim 1 is characterized in that: The internal sampling resistor is connected to the short-circuit sensor and phase loss sensor of the product under test. After being collected by the data acquisition unit, it is transmitted to the industrial computer through RS232 communication and displayed on the test software interface.

3. The automatic testing equipment for the horizontal tail distribution box according to claim 1 is characterized in that: The AC current transmitter is installed inside the electric cabinet. The current of the heating loop circuit is measured by the AC current transmitter, which is converted into a DC voltage signal, collected by the A / D conversion module and transmitted to the programmable logic controller. The programmable logic controller calculates the actual current size according to the linear relationship of the transmitter, transmits it through communication, and displays it on the test software interface.

4. The automatic testing equipment for the horizontal tail distribution box according to claim 1 is characterized in that: The data acquisition unit is used to measure the voltage across the short-circuit sensor sampling resistor, the voltage across the phase loss sensor sampling resistor, and the voltage across the internal thyristor of the tested product. The switch unit is used to implement a multiplexing function to measure 23 voltages. The test data is transmitted through the acquisition unit in the form of communication with the industrial computer, decoded by dedicated test software, and then displayed on the interface of the test software.

5. The automatic testing equipment for the horizontal tail distribution box according to claim 1 is characterized in that: The programmable logic device is used to control the internal time relay, counter, and output relay during different functional tests to control the on and off of the input signal required for the functional test and limit the time when the control signal is connected to protect the product under test.

6. The automatic testing equipment for the horizontal tail distribution box according to claim 1 is characterized by: The programmable logic controller, A / D conversion module, DC power supply, AC current transmitter, sampling resistor installation, industrial computer, data acquisition unit and switch module are inside the cabinet, and the display screen is installed on the cabinet panel installation panel; the programmable logic controller is connected to the A / D conversion module through a dedicated communication line; the programmable logic controller is connected to the industrial computer through a dedicated communication port; the output port of the AC current transmitter is connected to the sampling port of the A / D conversion module through a wire; the sampling resistor is connected to the corresponding pin of the socket of the product under test, and is also connected to the switch module port; the socket pin corresponding to the thyristor of the product under test is connected to the switch module port; the switch module is plugged into the connection hole of the data acquisition unit; the data acquisition unit is connected to the industrial computer through a dedicated communication port; the display is connected to the industrial computer through a dedicated video line.

7. The automatic testing equipment for the horizontal tail distribution box according to claim 1 is characterized by: The test software is specially compiled based on industrial computers and programmable logic controller application software.

8. A method for automatically testing a horizontal tail distribution box, characterized in that: The test method adopts the test equipment as described in any one of claims 1 to 7, and the test method is: After the equipment is started, it will conduct self-test, internal alarm information check and communication status check. After the self-test passes, the equipment parameters will be initialized. The output voltage and current protection parameters of the three-phase AC power supply will be configured through the industrial computer, and the three-phase AC power supply output and DC power supply output will be controlled. The programmable logic controller will drive the relay to output the control signal through a certain output port, and start the test cycle counting and test time timing. The industrial computer reads the flag bit of the output port of the programmable logic controller, and controls the multiplexing module of the data acquisition unit to open the acquisition channel according to the flag bit information. At the same time, the programmable logic controller collects current data through the A / D conversion module and the current sensor and sends it to the industrial computer; When the internal timing of the programmable logic controller exceeds the test time, the output port is closed to stop outputting the control signal, the industrial computer simultaneously closes the acquisition channel of the data acquisition unit, and the internal timer of the programmable logic controller is reset. When the counting cycle does not meet the test quantity requirement, the above test steps are repeated until the test is completed; The host computer automatically analyzes the test data, sends the test results to the test interface, controls the three-phase AC power supply and DC power supply to stop output and stop the test, saves the test data and results to a file, and generates a test report, thereby realizing the automated test of the horizontal tail distribution box.

Images