A centralized control panel assembly system for an aircraft cockpit

Abstract

This invention discloses a centralized control panel assembly system for an aircraft cockpit. The centralized control panel assembly system includes a control panel assembly and a digital processing module. The control panel assembly has a control panel operation switch, a switch signal acquisition circuit module, and a switch signal gating circuit module. The switch signal of the control panel operation switch is connected to the switch signal input terminal of the switch signal acquisition circuit module. The switch signal output terminal of the switch signal acquisition circuit module is connected to the corresponding switch signal input terminal of the switch signal gating circuit module. The switch signal output terminal of the switch signal gating circuit module is connected to a common switch signal input terminal of the digital processing module. The beneficial effect of this invention is that it realizes centralized acquisition and transmission of switch signals in the control panel assembly system.

Description

Technical Field

[0001] This invention relates to an aircraft cockpit control panel assembly system, and more particularly, to an aircraft cockpit centralized control panel assembly system. Background Technology

[0002] The control panel assembly serves as the human-machine interface between the pilot and the various systems in the aircraft cockpit. Control panel assemblies are located in areas such as the overhead panel, sun visors, instrument panel, and control console of the aircraft cockpit, forming a control panel assembly system. Currently, the drawbacks of the control panel assembly system are: its overall complexity and its limitations in terms of weight, reliability, and cost-effectiveness. Summary of the Invention

[0003] The purpose of this invention is to solve the technical problem that existing control panel assembly systems are too complex, and to provide a centralized control panel assembly system for aircraft cockpits.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: A centralized control panel assembly system for an aircraft cockpit, comprising: a control panel assembly and a digital processing module. The control panel assembly includes a control panel operation switch, a switch signal acquisition circuit module, and a switch signal gating circuit module. The switch signal of the control panel operation switch is connected to the switch signal input terminal of the switch signal acquisition circuit module. The switch signal output terminal of the switch signal acquisition circuit module is connected to the corresponding switch signal input terminal of the switch signal gating circuit module. The switch signal output terminal of the switch signal gating circuit module is connected to a common switch signal input terminal of the digital processing module. The gating control signal output terminal of the switch signal gating circuit module is connected to the corresponding gating control signal input terminal of the digital processing module.

[0005] As a preferred solution for the centralized control panel assembly system in the aircraft cockpit, the switch signal acquisition circuit module has a switch signal acquisition channel with built-in debounce filtering function.

[0006] As a preferred embodiment of a centralized control panel assembly system in an aircraft cockpit, the control panel operation switch is selected from the following: rotary switch, toggle switch, potentiometer switch, and push-button switch.

[0007] Compared with the prior art, the beneficial effects of the present invention are at least as follows: it realizes centralized acquisition and transmission of switching signals of the control board assembly system, reduces the number of controllers, reduces the transmission harness between the control board assembly and the digital processor, reduces the weight of the airborne control board assembly system, reduces system complexity, improves reliability, and is easy to verify.

[0008] In addition to the technical problems solved by the present invention, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions as described above, other technical problems that the present invention can solve, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail with reference to the accompanying drawings. Attached Figure Description

[0009] Figure 1 This is a structural schematic diagram of an embodiment of the present invention. Detailed Implementation

[0010] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. It should be noted that these descriptions of embodiments are intended to aid in understanding the invention and do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0011] See Figure 1 The figure shows a centralized control panel assembly system for an aircraft cockpit. The centralized control panel assembly system includes a control panel assembly. The control panel assembly has a dual-redundant architecture. The control panel assembly integrates one or more combinations of control panel operation switches requiring digitization, such as rotary switches, toggle switches, potentiometer switches, and push-button switches.

[0012] The control board operation switch requires digital acquisition of the switch status. The common terminal of the control board operation switch is grounded. The normally closed and normally open contacts of the toggle switch, potentiometer switch, and push switch, and each position of the rotary switch are connected to the input terminal of the switch signal acquisition circuit module.

[0013] The switch signal acquisition circuit module includes 8 acquisition channels and has a switch debounce filtering function, converting the on and off states of the switch into low-level "0" and high-level "1". Taking switch signal acquisition circuit module 1 as an example, the circuit implementation is described as follows: one end of R1, R2, R3, R4, R5, R6, R7, and R8 is connected to the electrical network VCC; one end of C1, C2, C3, C4, C5, C6, C7, and C8 is connected to the electrical network GND; one end of R1 and one end of C1 are connected to the switch state input INPUT1_1, and then connected to pin 2 of the selection module U1 in the switch signal selection circuit module 1; one end of R2 and one end of C2 are connected to the switch state input INPUT1_2, and then connected to pin 3 of the selection module U1 in the switch signal selection circuit module 1; one end of R3 and one end of C3 are connected to the switch state input INPUT1_3, and then connected to pin 4 of the selection module U1 in the switch signal selection circuit module 1; one end of R4... One end of C4 is connected to the switch state input INPUT1_4, and then to pin 5 of the selection module U1 in the switch signal selection circuit module 1. One end of R5 and one end of C5 are connected to the switch state input INPUT1_5, and then to pin 6 of the selection module U1 in the switch signal selection circuit module 1. One end of R6 and one end of C6 are connected to the switch state input INPUT1_6, and then to pin 7 of the selection module U1 in the switch signal selection circuit module 1. One end of R7 and one end of C7 are connected to the switch state input INPUT1_7, and then to pin 8 of the selection module U1 in the switch signal selection circuit module 1. One end of R8 and one end of C8 are connected to the switch state input INPUT1_8, and then to pin 9 of the selection module U1 in the switch signal selection circuit module 1. The circuits of switch signal acquisition circuit module 1 to switch signal acquisition circuit module n are the same. Switch signal acquisition circuit module 1 to switch signal acquisition circuit module n are respectively connected to gating modules 1 to gating modules n in switch signal gating circuit module 1 to realize the conversion of 8×n switch states to high and low level states.

[0014] The switch signal gating circuit module 1 includes n gating modules. Each gating module has the same circuit. Taking gating module U1 as an example, the circuit implementation is explained. Pin 20 of U1 is the power supply pin, connected to the electrical network VCC. One end of C9 is connected to the electrical network VCC, and the other end is connected to the electrical network GND; it is a bypass capacitor for U1. Pin 10 of U1 is the power ground pin, connected to the electrical network GND. Pin 1 of U1 is the data direction selection pin, connected to the electrical network VCC via R9. The data transmission direction is from port A to port B. Pin 19 of U1 is the gating control signal pin, connected to INPUT_N_C11. A high level disconnects port A from port B; a ground level transmits data from port A to port B. Pins 2-9 of U1 are the input for port A, and pins 11-18 of U1 are the output for port B.

[0015] The switch signal gating circuit module 1 includes n gating modules. The output terminals of channels B1, B2, B3, B4, B5, B6, B7, and B8 are respectively connected to the switch signal output bus INPUT_N_D0, INPUT_N_D1, INPUT_N_D2, INPUT_N_D3, INPUT_N_D4, INPUT_N_D5, INPUT_N_D6, and INPUT_N_D7. Each gating module has an independent gating control signal. The switch channel capacity of the switch signal gating circuit module 1 is 8 times the number of gating modules n, and the number of wires in the control board assembly 1 with reduced redundancy is 7*n-8.

[0016] The centralized control board assembly system comprises five control board assemblies, each with similar switch signal acquisition circuits. A set of switch signal input buses, INPUT_N_D0, INPUT_N_D1, INPUT_N_D2, INPUT_N_D3, INPUT_N_D4, INPUT_N_D5, INPUT_N_D6, and INPUT_N_D7, are connected to the output terminals of the respective control board assembly's switch signal output buses, INPUT_N_D0, INPUT_N_D1, INPUT_N_D2, INPUT_N_D3, INPUT_N_D4, INPUT_N_D5, INPUT_N_D6, and INPUT_N_D7. These eight outputs are then connected to the GPIO ports of the digital processor for data acquisition. Each gating module has an independent gating control signal.

[0017] The digital processor provides selection control signals for the switching signal gating circuit modules of each control board component and acquires the switching status information on the switching signal input bus. After determining the validity of the signal and digitizing it, it communicates with external systems through the external connection bus.

[0018] The method for acquiring and transmitting switch signals of the centralized control panel assembly system in an aircraft cockpit includes the following steps: Step S1. The switch status signal is processed by the switch signal acquisition circuit module through de-jitter filtering and then sent to the gating module in the switch signal gating circuit module. Step S2. The digital processor first outputs a valid gating control signal for one gating module, corresponding to the 8 switch status signals on the left side of the gating module, which are then transmitted to the switch signal input bus. After a delay, the digital processor acquires the data on the bus. The digital processor then outputs a valid gating control signal for the next gating module, and acquires the data on the bus again as above. This process is repeated sequentially until all switch status signals have completed one status acquisition.

[0019] Step S3. The digital processor collects the mutual exclusion of the level based on the on / off state of the normally closed and normally open contacts of the toggle switch, potentiometer switch, and push switch. Each position of the rotary switch has one and only one position with a low level. It checks the validity of the input switch signal, converts it into a digital signal or fault status, and sends it to other systems through the external connection bus.

[0020] Step S4. The digital processor proceeds to the next round of switch status signal acquisition and transmission according to steps S2 and S3. This enables real-time acquisition and transmission of the output status of all switches.

[0021] In this embodiment, eight digital controllers are reduced, and 154 transmission cables between the control board assembly and the digital processor are reduced, thereby reducing the weight of the airborne control board assembly system, lowering circuit complexity, and improving reliability.

[0022] The above description merely illustrates embodiments of the present invention and is quite specific and detailed; however, it should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A centralized control panel assembly system for an aircraft cockpit, characterized in that, include: The control board assembly includes a control board operation switch, a switch signal acquisition circuit module, and a switch signal gating circuit module. The switch signal of the control board operation switch is connected to the switch signal input terminal of the switch signal acquisition circuit module. The switch signal output terminal of the switch signal acquisition circuit module is connected to the corresponding switch signal input terminal of the switch signal gating circuit module. The switch signal output terminal of the switch signal gating circuit module is connected to the common switch signal input terminal of the digital processing module.

2. The centralized control panel assembly system for an aircraft cockpit according to claim 1, characterized in that, The switch signal acquisition circuit module has a switch signal acquisition channel with built-in debounce filtering function.

3. The centralized control panel assembly system for an aircraft cockpit according to claim 1, characterized in that, The control panel operation switches are selected from the following: rotary switches, toggle switches, potentiometer switches, and push-button switches.

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