Airplane oxygen mask testboard

Abstract

The utility model relates to an aircraft oxygen mask testboard, and belongs to the technical field of aircraft oxygen box assembly testing. Comprising a test panel, a connector, an LCD display screen, an indicating lamp, a switch, a CAN bus controller and a power interface, the test panel is installed on a test board, the connector, the LCD display screen, the indicating lamp, the switch, the CAN bus controller and the power interface are all installed on the test panel, and a PCB is further installed on the test panel. The connector, the LCD display screen, the indicating lamp, the switch, the CAN bus controller and the power interface are all connected with the PCB, and the power interface is further connected with a power source. According to the utility model, the test piece is connected to the test board through the connector and the CAN bus controller and is connected with the PCB, so that signal transmission and control between the test piece and the test board are realized, BIT test and latch drive test of the test piece are realized, and whether the latch can be normally opened and the oxygen mask can be released is checked.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft oxygen box component testing, in particular to an aircraft oxygen mask testing platform. Background Art

[0002] An oxygen mask is a device that transfers oxygen from a storage tank to the human lungs. The oxygen mask can cover the nose and mouth or the entire face. It plays an important role in ensuring human health and protecting the safety of pilots and airline passengers. Oxygen masks on aircraft are generally stored in an oxygen box assembly. When needed, the latch of the oxygen box assembly is driven to release the oxygen mask. The normal driving and use of the latch is very important to ensure the normal release of the oxygen mask. Therefore, it is necessary to test the latch of the oxygen box assembly to check whether the oxygen mask can be released normally. The utility model provides an aircraft oxygen mask test bench to test whether the oxygen mask can be released normally to ensure normal use. Summary of the Invention

[0003] To overcome the problems mentioned in the background art, the present invention provides an aircraft oxygen mask test bench. The present invention connects a test piece to the test bench and connects it to a PCB circuit board, enabling signal transmission and control between the test piece and the test bench to check whether the latch can open normally and release the oxygen mask.

[0004] To achieve the above-mentioned purpose, the utility model is implemented through the following technical solution: an aircraft oxygen mask test bench includes a test panel 1, a connector 2, an LCD display 3, an indicator light 4, a switch 5, a CAN bus controller 6 and a power interface 7. The test panel 1 is installed on the test bench, and the connector 2, LCD display 3, indicator light 4, switch 5, CAN bus controller 7 and power interface 7 are all installed on the test panel 1. A PCB circuit board is also installed on the test panel 1. The connector 2, LCD display 3, indicator light 4, switch 5, CAN bus controller 6 and power interface 7 are all connected to the PCB circuit board, and the power interface 7 is also connected to a power supply.

[0005] Furthermore, the PCB circuit board includes a controller, and the controller is a CKS32F103C8T6 single-chip microcomputer.

[0006] Furthermore, the PCB circuit board also includes an AD collector, the AD collector is MCP3208, and the AD collector is connected to the controller.

[0007] Furthermore, the PCB circuit board also includes an RS485 chip, and the RS485 chip is connected to the controller.

[0008] Furthermore, the PCB circuit board also includes an inverter, which is SN74LVC2G04DBVR, and the inverter is connected to the controller.

[0009] Furthermore, there are three indicator lights 4.

[0010] Beneficial effects of the utility model:

[0011] The utility model connects the test piece to the test bench through a connector and a CAN bus controller, and connects it to a PCB circuit board, so as to realize signal transmission and control between the test piece and the test bench, implement BIT test and latch drive test on the test piece, check whether there is any fault, check whether the main power supply and the backup power supply are normally supplied, and check whether the latch can be opened normally, so as to ensure that when the oxygen mask needs to be used, the latch of the oxygen box assembly can automatically open to release the oxygen mask. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of a test PCB circuit of the utility model.

[0013] Figure 2 yes Figure 1 An enlarged schematic diagram of one of them.

[0014] Figure 3 yes Figure 1 An enlarged schematic diagram of one of them.

[0015] Figure 4 yes Figure 1 An enlarged schematic diagram of one of them.

[0016] Figure 5 This is a test connection diagram of the utility model.

[0017] Figure 6 It is a schematic diagram of the test panel of the present utility model.

[0018] Reference numerals: test panel 1, connector 2, LCD display 3, indicator light 4, switch 5, CAN bus controller 6, power interface 7 in the figure. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding by technicians.

[0020] like Figure 1-6The utility model discloses an aircraft oxygen mask test bench, which includes a test panel 1, a connector 2, an LCD display 3, an indicator light 4, a switch 5, a CAN bus controller 6 and a power interface (J1) 7. The test bench is equipped with a test panel 1, and the connector 2, the LCD display 3, the indicator light 4, the switch 5, the CAN bus controller 7 and the power interface 7 are all installed on the test panel 1. A PCB circuit board is also installed on the test panel 1. The connector 2, the LCD display 3, the indicator light 4, the switch 5, the CAN bus controller 6 and the power interface 7 are all connected to the PCB circuit board. The power interface 7 is also connected to a power supply; the connector is J2 , the CAN bus controller is J3, and there are 3 indicator lights, namely L1, L2, and L3, of which L1 is the BIT (built-in self-test) power indicator, L2 is the main power indicator, and L3 is the backup power indicator; there are 7 switches (S1-S7), S1-S4 are parameter setting switch buttons, S5 is the test piece BIT (built-in self-test) power switch, S6 is the test piece main power switch, and S7 is the test piece backup power switch. The test piece is the latch of the oxygen box assembly. The power interface is connected to a 220VAC / 50Hz power supply, which provides working power for the test after passing through the power circuit on the PCB (28±0.5 VDC); connect the test piece to the test bench through the connector and CAN bus controller, and connect it to the PCB circuit board to realize signal transmission and control between the test piece and the test bench, perform BIT test and latch drive test on the test piece, check for faults, check whether the main power supply and backup power supply are supplying normally, and whether the latch can be opened normally to ensure that when the oxygen mask needs to be used, the latch of the oxygen box assembly can automatically open to release the oxygen mask.

[0021] The PCB circuit board includes a controller, which is a CKS32F103C8T6 single-chip microcomputer; the PCB circuit board also includes an AD collector, which is an MCP3208, and is connected to the controller; the PCB circuit board also includes an RS485 chip, which is connected to the controller; the PCB circuit board also includes an inverter, which is an SN74LVC2G04DBVR, and is connected to the controller; the test bench is connected to the test piece through J2 and J3 on the test panel, and signal transmission and control between the test piece and the test bench are realized through the CAN bus controller, RS485 chip, AD collector and inverter SN74LVC2G04DBVR, thereby realizing BIT testing and latch drive testing of the test piece.

[0022] Working process:

[0023] The working principle of the utility model is as follows: the test piece is connected to the test bench through the connector (J2) 2 and the CAN bus controller (J3) 6, connected to the PCB circuit board, connected to the power supply through the power interface 7, and enters the test. The test parameters are set through the switches 5 (S1-S4), such as setting the number of oxygen masks. The LED display 3 can display the test status. When performing the BIT (built-in self-test) test, the BIT (built-in self-test) power is turned on through the switch 5 (S5), the indicator light (L1) 4 is lit, and the BIT (built-in self-test) test is performed to check whether there is a fault; the main power is turned on through the switch (S6) 5, the indicator light (L2) 4 is lit, and under normal circumstances, the latch is powered on and the door lock is automatically opened, thereby checking the power supply condition and whether the latch can be opened normally and the oxygen mask can be released normally; the backup power is turned on through the switch (S7) 5, the indicator light (L3) 4 is lit, and the backup power supply condition or whether the latch can be opened normally can be checked.

[0024] 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 limiting. 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. An aircraft oxygen mask test bench, characterized by: The aircraft oxygen mask test bench comprises a test panel (1), a connector (2), an LCD display (3), an indicator light (4), a switch (5), a CAN bus controller (6) and a power interface (7). The test bench is provided with a test panel (1), the connector (2), the LCD display (3), the indicator light (4), the switch (5), the CAN bus controller (6) and the power interface (7) are all installed on the test panel (1), a PCB circuit board is also installed on the test panel (1), the connector (2), the LCD display (3), the indicator light (4), the switch (5), the CAN bus controller (6) and the power interface (7) are all connected to the PCB circuit board, and the power interface (7) is also connected to a power supply.

2. The aircraft oxygen mask test bench according to claim 1, characterized in that: The PCB circuit board includes a controller, and the controller is a CKS32F103C8T6 single chip microcomputer.

3. The aircraft oxygen mask test bench according to claim 1, characterized in that: The PCB circuit board also includes an AD collector, which is MCP3208, and the AD collector is connected to the controller.

4. The aircraft oxygen mask test bench according to claim 1, characterized in that: The PCB circuit board also includes an RS485 chip, and the RS485 chip is connected to the controller.

5. The aircraft oxygen mask test bench according to claim 1, characterized in that: The PCB circuit board also includes an inverter, which is SN74LVC2G04DBVR. The inverter is connected to the controller.

6. The aircraft oxygen mask test bench according to claim 1, characterized in that: There are three indicator lights (4).

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