Stall management computer test board

Abstract

The utility model discloses a stall management computer test board which comprises a case, a test panel is arranged at the front end of the case, and a test circuit is arranged in the case. And the control circuit, the synchronizing signal test circuit and the signal selection switch of the test circuit are respectively connected with the stall management computer. The industrial control computer is connected with the current-voltage acquisition module and the signal selection switch, and the signal selection switch is connected with the second switching power supply, the voltage signal conditioning board, the pulse signal control circuit and the current-voltage acquisition module. The industrial control computer is used for outputting a discrete magnitude output signal, a discrete magnitude input signal and an ARINC429 signal to the stall management computer by controlling the signal selection switch; and the test panel is provided with a plurality of groups of test interfaces corresponding to the test circuits. According to the utility model, the UUT working power supply can be provided, the voltage and current values of the UUT working power supply can be detected, discrete quantity and analog quantity input signals can be provided, discrete output signal test interfaces and various communication signal test interfaces can be provided, and the practicability is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of stall management computer test equipment, in particular to a stall management computer test bench. Background Art

[0002] Stall management computers (SMCs), such as those in Boeing 737s, are crucial components of aircraft systems. Within the stall warning system, these computers process angle of attack and flap position signals and output signals to control the stick shaker. Therefore, SMC testing requirements are extremely stringent. Currently, SMC testing is complex, requiring the integration of numerous test equipment. Most testing is performed manually, resulting in low efficiency, high costs, and a heavy reliance on operator experience. This situation severely impacts airworthiness and requires urgent resolution. Utility Model Content

[0003] The purpose of this utility model is to provide a stall management computer test bench to address the aforementioned issues. This utility model is particularly suitable for testing stall management computers with a PN: 65-52822 model. By utilizing various control switches and measuring instruments on the test bench panel, various performance tests of the stall management computer can be effectively completed, demonstrating its high practicality.

[0004] The utility model is mainly realized through the following technical solutions:

[0005] A stall management computer test bench comprises a chassis, a front end of the chassis being provided with a test panel and an interior thereof being provided with a test circuit; the test circuit comprising an industrial control computer, a transformer, a first switching power supply, a second switching power supply, a control circuit, a voltage signal conditioning board, a pulse signal control circuit, a current-voltage acquisition module, a signal selection switch, and a synchronization signal test circuit; the control circuit, the synchronization signal test circuit, and the signal selection switch being respectively connected to the stall management computer;

[0006] The industrial control computer is respectively connected to the current-voltage acquisition module and the signal selection switch, and the signal selection switch is respectively connected to the second switching power supply, the voltage signal conditioning board, the pulse signal control circuit and the current-voltage acquisition module, and the voltage signal conditioning board is respectively connected to the second switching power supply and the pulse signal control circuit. The industrial control computer is used to output a discrete output signal, a discrete input signal and an ARINC429 signal to the stall management computer by controlling the signal selection switch;

[0007] The 115VAC power supply is connected to the control circuit through a transformer to provide working power for the stall management computer, and the 220VAC power supply is connected to the first switching power supply, the second switching power supply and the industrial control computer respectively; the test panel is provided with several groups of test interfaces corresponding to the test circuits.

[0008] In order to better implement the present invention, further, an electrical connector XS1 and an electrical connector XS2 are provided on one side of the chassis, and the electrical connector XS1 and the electrical connector XS2 are respectively used to connect to the 220VAC power supply and the 115VAC power supply through power cables, and the electrical connector XS1 is connected to the first switching power supply and the second switching power supply through the 220VAC power switch; the electrical connector XS2 is connected to the transformer through the 115VAC power switch; the 220VAC power switch and the 115VAC power switch are respectively arranged on the test panel.

[0009] In order to better implement the present invention, an electrical connector XS3 is further provided on one side of the chassis, and several interfaces of the electrical connector XS3 are respectively connected to the control circuit, the synchronization signal test circuit, the signal selection switch and the test interface.

[0010] In order to better implement the present invention, further, the test interface includes a voltage signal test hole, a signal isolation test interface, a synchronization signal input interface and an ARINC429 signal test interface.

[0011] In order to better implement the present utility model, the test panel is further provided with a 28VDC voltmeter, a voltage adjustment knob, a power indicator light and a discrete output signal indicator light; one side of the test panel is provided with a 28VDC voltmeter, a voltage adjustment knob, and a power indicator light from top to bottom, and the middle is provided with a discrete output signal indicator light, a signal test interface, a transient suppressor test interface, and a voltage signal test hole from top to bottom; the other side is provided with an ARINC429 signal test interface, a synchronization signal input interface and a Signal isolation test interface from top to bottom.

[0012] In order to better implement the present invention, further, the industrial control computer is connected to each I / O module and the signal selection switch via an RS485 communication bus.

[0013] In order to better implement the present invention, further, the signal selection switch is a relay board.

[0014] The beneficial effects of the utility model are as follows:

[0015] This utility model is a dedicated test device for stall management computers, particularly suitable for testing the PN: 65-52822 stall management computer. By utilizing the various control switches and measuring instruments on the test bench panel, it effectively tests the various performance characteristics of the stall management computer. It provides power to the UUT and detects its voltage and current values. It also provides discrete and analog input signals, discrete output signal test interfaces, and various communication signal test interfaces, offering excellent practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the stall management computer test bench of the utility model;

[0017] Figure 2 It is a structural diagram of the test panel;

[0018] Figure 3 This is the principle block diagram of the test circuit;

[0019] Figure 4 This is the circuit diagram for connecting the electrical connector XS1 to the 220VAC power supply;

[0020] Figure 5 This is a circuit diagram for connecting the electrical connector XS2 to a 115VAC power supply;

[0021] Figure 6 A signal isolation test circuit diagram for connecting the XP3-1 interface to the XP3-4 interface of the electrical connector XS3;

[0022] Figure 7 The circuit diagram of the XP3-7 interface to the XP3-14 interface of the electrical connector XS3 and the discrete output signal indicator lights L1 to L4 and L7 and L8;

[0023] Figure 8 A circuit diagram of the XP3-42 interface to the XP3-43 interface of the electrical connector XS3 and the discrete output signal indicator lights L5 to L6;

[0024] Figure 9 This is the ARINC429 signal test circuit diagram for connecting the XP3-7 interface to the XP3-14 interface of the aviation plug electrical connector XS3;

[0025] Figure 10 Circuit diagram for transient suppressor testing.

[0026] Among them: 1-28VDC voltmeter, 2-voltage adjustment knob, 3-power indicator light, 4-220VAC power switch, 5-115VAC power switch, 6-voltage signal test hole, 7-Signal isolation test interface, 8-synchronization signal input interface, 9-ARINC429 signal test interface, 10-discrete output signal indicator. DETAILED DESCRIPTION

[0027] Example 1:

[0028] A stall management computer test bench, such as Figure 1 and Figure 2 As shown, it includes a chassis, a test panel is provided at the front end of the chassis, and a test circuit is provided inside the chassis; an electrical connector XS1, an electrical connector XS2 and an electrical connector XS3 are provided on one side of the chassis.

[0029] like Figure 2 As shown, the test panel is also provided with a 28VDC voltmeter 1, a voltage adjustment knob 2, a power indicator light 3, and a discrete output signal indicator light 10; one side of the test panel is provided with a 28VDC voltmeter 1, a voltage adjustment knob 2, a power indicator light 3, a 220VAC power switch 4, and a 115VAC power switch 5 in sequence from top to bottom, and the middle is provided with a discrete output signal indicator light 10, a signal test interface, a transient suppressor test interface, and a voltage signal test hole 6 in sequence from top to bottom, and the other side is provided with an ARINC429 signal test interface 9, a synchronous signal input interface 8, and a signal isolation test interface in sequence from top to bottom. Specifically, the circuit diagram of the transient suppressor test interface is shown in FIG. Figure 10 shown.

[0030] like Figure 3 As shown, the test circuit includes an industrial control computer, a transformer, a first switching power supply, a second switching power supply, a control circuit, a voltage signal conditioning board, a pulse signal control circuit, a current-voltage acquisition module, a signal selection switch and a synchronization signal test circuit. The control circuit, the synchronization signal test circuit and the signal selection switch are respectively connected to the stall management computer.

[0031] The industrial control computer is respectively connected to the current-voltage acquisition module and the signal selection switch, and the signal selection switch is respectively connected to the second switching power supply, the voltage signal conditioning board, the pulse signal control circuit and the current-voltage acquisition module. The voltage signal conditioning board is respectively connected to the second switching power supply and the pulse signal control circuit. The industrial control computer is used to output discrete output signals, discrete input signals and ARINC429 signals to the stall management computer through the control signal selection switch; the 115VAC power supply is connected to the control circuit through a transformer to provide UUT working power supply for the stall management computer, and the 220VAC power supply is respectively connected to the first switching power supply, the second switching power supply and the industrial control computer; and several groups of test interfaces are provided on the test panel corresponding to the test circuit.

[0032] Specifically, if Figure 4 and Figure 5 As shown, the electrical connector XS1 and the electrical connector XS2 are respectively used to connect to the 220VAC power supply and the 115VAC power supply through power cables. The electrical connector XS1 is connected to the first switching power supply G2 and the second switching power supply G1 through the 220VAC power switch 4S2; the electrical connector XS2 is connected to the 26VAC transformer through the 115VAC power switch 5S3.

[0033] The several XP3 interfaces of the electrical connector XS3 are connected to the control circuit, the synchronization signal test circuit, the signal selection switch and the test interface respectively. Figure 6 As shown, the XP3-1 interface to the XP3-4 interface of the electrical connector XS3 are provided with a signal isolation test circuit. Figure 7 and Figure 8 As shown, the XP3-7 interface to the XP3-17 interface and the XP3-42 interface to the XP3-43 interface of the electrical connector XS3 are provided with discrete output signal indicator lights 10. Figure 9 As shown, the XP3-26 interface to the XP3-31 interface of the electrical connector XS3 are provided with ARINC429 test circuits. The definitions of the various interfaces of the electrical connector XS3 are shown in Table 1.

[0034] like Figure 3 As shown, the test bench is used to provide UUT working power and detect its voltage and current values, provide discrete and analog input signals, and provide discrete output signal test interfaces and various communication signal test interfaces. During use, the utility model uses an industrial control computer to connect to each I / O module and relay board via the RS485 communication bus. The host computer sends test commands through the test software to control the on / off status of the relay module, and reads the electrical signals (voltage and current) collected by the I / O module, which are displayed on the software interface after processing.

[0035] The conditions for use of this utility model are as follows:

[0036] 1.1 Power Supply

[0037] AC power supply: 220VAC / 50Hz, 5A.

[0038] AC power supply: 115VAC / 400Hz, 2A.

[0039] 1.2 Environment

[0040] Temperature: -10℃~+50℃;

[0041] Humidity: 10% RH ~ 85% RH;

[0042] Air pressure: field pressure.

[0043] It should be used indoors in an environment free of dust, acid, alkali and other corrosive gases, strong mechanical vibration and shock, and strong electromagnetic fields.

[0044] The steps of using this utility model are as follows:

[0045] 1) Preparation before testing

[0046] Step 1: Turn off all toggle switches on the front panel and connect the workshop's 220VAC / 50Hz power supply and 115VAC / 400Hz power supply to the test equipment power box via power cables.

[0047] Step 2: Turn on the 220VAC power switch 4 on the front panel, confirm that the 220VAC indicator light and all meter heads are on, then turn off the switch.

[0048] Step 3: Connect the DUT to the test bench via the test cable, connect the industrial computer to the test bench via the communication cable, and then start the industrial computer.

[0049] 2) Testing

[0050] Step 4: Turn on the 220VAC and 115VAC power switches 5 on the front panel, open the test software on the industrial computer, and enter the test main interface;

[0051] Step 5: Open the test item selection interface, select the test item, and then click the Start Test button. The system will start automatic testing.

[0052] 3) Test completed

[0053] Step 6: Close the test software and turn off the 220VAC and 115VAC power switches 5 on the front panel.

[0054] Step 7: Disconnect all cables and store the equipment as specified.

[0055] Notes for this utility model:

[0056] 1) Before powering on, confirm that the 220VAC and 115VAC power switches 5 on the front panel are in the down position, and carefully check to ensure that there are no hanging wires or other unnecessary conductive objects on the test bench.

[0057] 2) Do not plug or unplug the device under test while it is powered on. After the test is completed, flip up all power switches and disconnect all cables.

[0058] 3) In case of emergency, please turn off the 220VAC or 115VAC power switch 5 first.

[0059] Verification of this utility model:

[0060] 1. Equipment detection

[0061] Test the equipment according to YMGHCSN-250-YG "Acceptance Test Outline for Stall Management Computer Test Bench".

[0062] 2 Header calibration

[0063] Remove the meter head and send it to a regular calibration unit for calibration once a year.

[0064] 3. Verification cycle

[0065] The calibration cycle of this equipment is once every two years.

[0066] Fault analysis of this utility model:

[0067] Power failure:

[0068] 1) If the 220VAC power indicator light 3 is not on: Check whether the 220VAC power input circuit is normal and whether the power switch wiring is correct.

[0069] 2) If there is no 28VDC power output: Check whether the internal switching power supply of the test bench is working properly.

[0070] Table 1

[0071]

[0072]

[0073]

[0074] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention falls within the scope of protection of the present invention.

Claims

1. A stall management computer test bench, characterized in that: The invention comprises a chassis, a test panel is provided at the front end of the chassis, and a test circuit is provided inside the chassis; the test circuit comprises an industrial control computer, a transformer, a first switching power supply, a second switching power supply, a control circuit, a voltage signal conditioning board, a pulse signal control circuit, a current-voltage acquisition module, a signal selection switch and a synchronization signal test circuit, and the control circuit, the synchronization signal test circuit and the signal selection switch are respectively connected to the stall management computer; The industrial control computer is respectively connected to the current-voltage acquisition module and the signal selection switch, and the signal selection switch is respectively connected to the second switching power supply, the voltage signal conditioning board, the pulse signal control circuit and the current-voltage acquisition module, and the voltage signal conditioning board is respectively connected to the second switching power supply and the pulse signal control circuit. The industrial control computer is used to output a discrete output signal, a discrete input signal and an ARINC429 signal to the stall management computer by controlling the signal selection switch; The 115VAC power supply is connected to the control circuit through a transformer to provide working power for the stall management computer, and the 220VAC power supply is connected to the first switching power supply, the second switching power supply and the industrial control computer respectively; the test panel is provided with several groups of test interfaces corresponding to the test circuits.

2. The stall management computer test bench according to claim 1, characterized in that: An electrical connector XS1 and an electrical connector XS2 are provided on one side of the chassis. The electrical connector XS1 and the electrical connector XS2 are respectively used to connect to a 220VAC power supply and a 115VAC power supply via power cables. The electrical connector XS1 is connected to a first switching power supply and a second switching power supply via a 220VAC power switch (4); the electrical connector XS2 is connected to a transformer via a 115VAC power switch (5); and the 220VAC power switch (4) and the 115VAC power switch (5) are respectively provided on a test panel.

3. The stall management computer test bench according to claim 2, characterized in that: An electrical connector XS3 is also provided on one side of the chassis, and several interfaces of the electrical connector XS3 are respectively connected to the control circuit, the synchronization signal test circuit, the signal selection switch and the test interface.

4. The stall management computer test bench according to claim 1, characterized in that: The test interface comprises a voltage signal test hole (6), a signal isolation test interface (7), a synchronization signal input interface (8) and an ARINC429 signal test interface (9).

5. The stall management computer test bench according to claim 4, characterized in that: The test panel is also provided with a 28VDC voltmeter (1), a voltage adjustment knob (2), a power indicator light (3) and a discrete output signal indicator light (10); one side of the test panel is provided with a 28VDC voltmeter (1), a voltage adjustment knob (2) and a power indicator light (3) in sequence from top to bottom, the middle portion is provided with a discrete output signal indicator light (10), a signal test interface, a transient suppressor test interface and a voltage signal test hole (6) in sequence from top to bottom, and the other side is provided with an ARINC429 signal test interface (9), a synchronization signal input interface (8) and a signal isolation test interface (7) in sequence from top to bottom.

6. The stall management computer test bench according to claim 1, characterized in that: The industrial control computer is connected to each I / O module and the signal selection switch via an RS485 communication bus.

7. The stall management computer test bench according to claim 1, characterized in that: The signal selection switch is a relay board.

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