Universal testboard for aircraft entertainment system

Abstract

The utility model relates to a general testboard for an aircraft entertainment system, and belongs to the technical field of aircraft entertainment system testing. Comprising a test panel, a power supply connection circuit, a transformation rectification circuit, a step-down circuit, a video playing circuit and a test master control circuit, the test panel is provided with a plurality of test connectors, test switches and indicating lamps, and the power supply connection circuit, the transformation rectification circuit and the step-down circuit are connected in sequence. The step-down circuit is connected with the test master control circuit and the video playing circuit, and the video playing circuit and the test master control circuit are respectively connected with the test machine part; according to the utility model, the system test bench is connected with the to-be-tested machine part, so that each function of the to-be-tested machine part can be tested, display assemblies produced by multiple companies can be tested, calibration and troubleshooting can be carried out, and normal use of an entertainment system can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft entertainment system testing, and particularly relates to a general test bench for aircraft entertainment systems. Background Art

[0002] At present, in order to attract passengers, airlines have installed a large number of multi-functional passenger entertainment systems on aircraft to meet the entertainment needs of passengers during flights. The display components are the most common. During the production and use of aircraft, it is necessary to calibrate, test, and troubleshoot the entertainment system to ensure the normal use of the system, improve the flight experience of passengers, and ensure service quality. Therefore, the utility model provides a general test bench for aircraft entertainment systems to test the display components produced by multiple companies, which is convenient for calibration, testing, and troubleshooting. Summary of the Invention

[0003] In order to overcome the problems mentioned in the background art, the utility model provides a general test bench for aircraft entertainment systems. The utility model connects the system test bench with the parts to be tested, can test various functions of the parts to be tested, can test the display components produced by multiple companies, and can perform calibration and troubleshooting to ensure the normal use of the entertainment system.

[0004] To achieve the above object, the utility model is realized by the following technical solution: A general test bench for aircraft entertainment systems includes a test panel 1, a power connection circuit 2, a step-down rectification circuit 3, a voltage reduction circuit 4, a video playback circuit 5, and a test main control circuit 6. A plurality of test connectors, test switches, and indicator lights are respectively arranged on the test panel 1. The power connection circuit 2, the step-down rectification circuit 3, and the voltage reduction circuit 4 are connected in sequence. The voltage reduction circuit 4 is connected to the test main control circuit 6 and the video playback circuit 5. The video playback circuit 5 and the test main control circuit 6 are respectively connected to the parts to be tested.

[0005] Further, the step-down rectification circuit 3 includes a transformer and a bridge full-wave rectification circuit. The transformer is connected to the power connection circuit 2 to step down the 115VAC external power supply to 28VAC voltage. The bridge full-wave rectification circuit is connected to the transformer to rectify and output the stepped-down 28VAC voltage as 40VDC voltage.

[0006] Further, the voltage reduction circuit 4 includes a voltage reduction module M1, a voltage reduction module M2, and a voltage reduction module M3. The voltage reduction module M1, the voltage reduction module M2, and the voltage reduction module M3 are connected in sequence. The voltage reduction module M1 is connected to the rectification circuit. The voltage reduction module M1 steps down the 40VDC voltage to 28VDC voltage. The voltage reduction module M2 steps down the 28VDC voltage to 18VDC voltage. The voltage reduction module M3 steps down the 18VDC voltage to 5VDC voltage.

[0007] Further, the test main control circuit 6 includes a main test circuit and a standby test circuit. Both the main test circuit and the standby test circuit include a control chip IC, and the control chip IC uses an STC89C52RC single-chip microcomputer.

[0008] Further, the main test circuit and the standby test circuit further include a relay. The relay is connected to the control chip IC and is also connected to the test component.

[0009] Further, both the main test circuit and the standby test circuit include an RS232 communication serial port, and the control chip IC is connected to the RS232 communication serial port.

[0010] Advantages of the present utility model:

[0011] The present utility model is provided with a test panel, a power connection circuit, a step-down rectification circuit, a voltage reduction circuit, a video playback circuit, and a test main control circuit. At the same time, a plurality of test connectors, test switches, and indicator lights are respectively provided on the test panel. Multiple levels of voltage can be provided through the step-down rectification circuit and the voltage reduction circuit, which is convenient for providing voltage to the test bench and the test components to facilitate testing. A standby test circuit is also provided to ensure the normal progress of the test. By connecting the system test bench to the test components, various functions of the test components can be tested, and display components produced by multiple companies can be tested for calibration and fault troubleshooting to ensure the normal use of the entertainment system. Description of the Drawings

[0012] Figure 1 is a schematic diagram of the test system of the present utility model.

[0013] Figure 2 is a schematic diagram of the test panel of the present utility model.

[0014] Figure 3 is a schematic diagram of the power connection circuit of the present utility model.

[0015] Figure 4 is a schematic diagram of the step-down rectification circuit of the present utility model.

[0016] Figure 5 is a schematic diagram of the voltage reduction circuit of the present utility model.

[0017] Figure 6 is a schematic diagram of the video playback circuit of the present utility model.

[0018] Figure 7 is a schematic diagram of the test main control circuit of the present utility model.

[0019] Figure 8 is a schematic diagram of the test interface connection of the present utility model.

[0020] Figure 9This is a schematic diagram showing the connection of the communication interface for testing the utility model.

[0021] Reference numerals in the drawings: test panel 1, power connection circuit 2, step-down rectification circuit 3, voltage reduction circuit 4, video playback circuit 5, test main control circuit 6. Detailed implementation manner

[0022] In order to make the purpose, technical solutions and beneficial effects of the present utility model clearer, the preferred embodiments of the present utility model will be described in detail below with reference to the drawings for the convenience of those skilled in the art to understand.

[0023] As Figures 1-9 , the present utility model discloses a general test bench for an aircraft entertainment system. The general test bench for an aircraft entertainment system includes a test panel 1, a power connection circuit 2, a step-down rectification circuit 3, a voltage reduction circuit 4, a video playback circuit 5, and a test main control circuit 6. A plurality of test connectors, test switches, and indicator lights are respectively provided on the test panel 1. The power connection circuit 2, the step-down rectification circuit 3, and the voltage reduction circuit 4 are connected in sequence. The voltage reduction circuit 4 is connected to the test main control circuit 6 and the video playback circuit 5. The video playback circuit 5 and the test main control circuit 6 are respectively connected to the test components; the test components are the display screens. A plurality of test connectors, test switches, and indicator lights are respectively provided on the test panel 1. As shown in the attached Figure 2As shown, it includes a 115V_Power connector for accessing an external power supply. Both the main test circuit and the standby test circuit are equipped with switches such as 115VAC SW, 28VDC SW, 18VDC SW, ON CONT / OFF CONT switch, NO SMOKING, and FASTEN SEAT BELT switch. The main test circuit also includes main connectors J1, J2, RS232, and Video_1 interface. The standby test circuit also includes main connectors J3, J4, RS232, and Video_2 interface. The video playback circuit 5 is connected to the test component through Video_1 / Video_2 to transmit video signals to the test component and test whether the test display screen can display the video. The test component to be tested is connected to the test bench through connectors J1 / J3, J2 / J4, Video_1 / Video_2. The 115VAC SW switch is used to control the 115VAC power supply of the test component. The 28VDC SW switch is used to control the 28VDC power supply of the test component. The 18VDC SW switch is used to control the 18VDC power supply of the test component. The ON CONT / OFF CONT switch controls the test component, that is, the lowering and retracting of the test display screen. Among them, by paralleling relay switches, the test of the cyclic lowering and retracting process of the test component is realized. The NO SMOKING and FASTEN SEAT BELT switches are used to control the corresponding NO SMOKING and FASTEN SEAT BELT functions of the test component. Main connectors (J1, J2, J3, J4, RS232), where J1 / J3 are used as main connectors for testing most functions of the test component. J2 / J4 are communication ports, and the internal RS232 connector is transferred to achieve real-time communication of the test component. The ON IND LED indicator is used to indicate the ON IND signal of the test component.The test bench is equipped with a test panel, a power connection circuit, a step-down rectification circuit, a voltage reduction circuit, a video playback circuit, and a test main control circuit. At the same time, the test panel is respectively provided with a plurality of test connectors, test switches, and indicator lights. Multiple levels of voltage can be provided through the step-down rectification circuit and the voltage reduction circuit, which is convenient for providing voltage for the test bench and the components to be tested, facilitating testing. By connecting the system test bench to the components to be tested, various functions of the components to be tested can be tested. It can test display components produced by multiple companies and is applicable to the P / N: 1310458-XXX series LCD displays produced by Rockwell Collins; the P / N: 617-6265-XXX series 8.6-inch retractable LCD components produced by Sony; the P / N: RD-AA90212X-XX series video module / PSU panel components, P / N: RD-AV213X series / RD-AV213X-01 series 13-inch display screens and other series of display screens produced by Panasonic for testing, calibration, and troubleshooting to ensure the normal use of the entertainment system.

[0024] The step-down rectification circuit 3 includes a transformer and a bridge full-wave rectification circuit. The transformer is connected to the power connection circuit 2 to step down the 115VAC external power supply to 28VAC voltage. The bridge full-wave rectification circuit is connected to the transformer to rectify and output the stepped-down 28VAC voltage as 40VDC voltage.

[0025] The voltage reduction circuit 4 includes voltage reduction modules M1, M2, and M3. The voltage reduction modules M1, M2, and M3 are connected in sequence. The voltage reduction module M1 uses an LM2596BHV chip, and the voltage reduction modules M2 and M3 use LM2596BB chips. The voltage reduction module M1 is connected to the rectification circuit. The voltage reduction module M1 steps down the 40VDC voltage to 28VDC voltage. Part of this voltage is used to supply power to the components to be tested, and part of it is input to module M2. The voltage reduction module M2 steps down the 28VDC voltage to 18VDC voltage. Similarly, part of this voltage is used to supply power to the components to be tested, and part of it continues to be input to module M3. The voltage reduction module M3 steps down the 18VDC voltage to 5VDC voltage, which is mainly used for the internal circuit of the test bench.

[0026] The described test main control circuit 6 includes a main test circuit and a standby test circuit. Both the main test circuit and the standby test circuit include a control chip IC, and the control chip IC uses an STC89C52RC single-chip microcomputer. The main test circuit and the standby test circuit also include a relay. The relay is connected to the control chip IC and is also connected to the test component. The control chip IC is powered by 5V and is externally connected to a 12MHz crystal oscillator. It is mainly responsible for controlling the cyclic lowering and retracting process of the test component, and controls the release and retraction of the display screen of the test component by controlling the relay switch to perform the test work of the test component.

[0027] Both the main test circuit and the standby test circuit include an RS232 communication serial port, and the control chip IC is connected to the RS232 communication serial port; this is for convenient communication to perform signal transmission and control.

[0028] Working process:

[0029] The working principle of the present invention is as follows: During testing, a 115VAC, 400Hz power supply is connected through the 115V_Power connector plug, and the test component to be tested is connected to the test bench through connectors J1 / J3, J2 / J4, Video_1 / Video_2. The 115VAC PWR switch in the panel power supply part is turned on to supply 115VAC, the 28VDC PWR and 18VDC PWR are both turned on to turn on the corresponding power supplies, and the 115VAC SW and 28VDC SW switches are turned on to provide 115V and 28V voltages for the test component. Press the ON CONT switch to release the display screen of the test component and observe whether there is video content displayed on the display screen. Press the OFF CONT switch to retract the display screen. Turn on the NO SMOKING switch to light up the corresponding indicator light of the test component, and turn on the FASTEN SEAT BELT switch to light up the corresponding indicator light of the test component. During cyclic testing, the control chip IC controls the relay to control the display screen, and observes the cyclic release - retraction - release of the display screen of the test component.

[0030] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A universal test bench for aircraft entertainment systems, characterized in that: The universal test bench for an aircraft entertainment system comprises a test panel (1), a power connection circuit (2), a transformer rectifier circuit (3), a step-down circuit (4), a video playback circuit (5) and a test main control circuit (6); the test panel (1) is provided with a plurality of test connectors, test switches and indicator lights; the power connection circuit (2), the transformer rectifier circuit (3) and the step-down circuit (4) are connected in sequence; the step-down circuit (4) is connected to the test main control circuit (6) and the video playback circuit (5); and the video playback circuit (5) and the test main control circuit (6) are respectively connected to a test device.

2. The universal test bench for aircraft entertainment system according to claim 1, characterized in that: The transformer rectifier circuit (3) comprises a transformer and a bridge full-wave rectifier circuit. The transformer is connected to the power connection circuit (2) to reduce the voltage of the 115VAC external power supply to 28VAC. The bridge full-wave rectifier circuit is connected to the transformer to rectify the reduced 28VAC voltage and output it as a 40VDC voltage.

3. The universal test bench for aircraft entertainment system according to claim 1, characterized in that: The step-down circuit (4) comprises a step-down module M1, a step-down module M2 and a step-down module M3, which are connected in sequence. The step-down module M1 is connected to a rectifier circuit. The step-down module M1 reduces the 40VDC voltage to the 28VDC voltage, the step-down module M2 reduces the 28VDC voltage to the 18VDC voltage, and the step-down module M3 reduces the 18VDC voltage to the 5VDC voltage.

4. The universal test bench for aircraft entertainment system according to claim 1, characterized in that: The test main control circuit (6) comprises a main test circuit and a standby test circuit, and both the main test circuit and the standby test circuit comprise a control chip IC, and the control chip IC uses a STC89C52RC single-chip microcomputer.

5. The universal test bench for aircraft entertainment system according to claim 4, characterized in that: The main test circuit and the standby test circuit both include relays, the relays are connected to the chip IC, and the relays are connected to the test device.

6. The universal test bench for aircraft entertainment system according to claim 4, characterized in that: The main test circuit and the standby test circuit both include an RS232 communication serial port, and the control chip IC is connected to the RS232 communication serial port.

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