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A dual-redundancy CPU control panel based on a DSP and a CPLD

A control panel, dual redundancy technology, applied in hardware redundancy for data error detection, response error generation, instruments and other directions, can solve problems affecting aircraft flight safety, etc., to achieve the effect of improving reliability

Active Publication Date: 2019-04-02
天津航空机电有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bus module, acquisition module, and control module of the control board are taken as a whole. The failure of any one of them will cause the normal operation of the power supply system on the aircraft and affect the flight safety of the aircraft.

Method used

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  • A dual-redundancy CPU control panel based on a DSP and a CPLD

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] The double redundancy CPU control panel based on DSP and CPLD of the present invention, as figure 1 As shown, there are two switching modes: automatic switching mode and remote command switching mode.

[0022] In the automatic switching mode after the main board fails, the main board automatically switches to the standby board. Conditions: When the main board GJB289A fails, switch to the main board RS422 bus 1. When the RS422 bus 1 of the main board fails, it can switch to the standby board when the handshake communication between the main board and the standby board is normal and the standby board is normal.

[0023] In the automatic switching mode, the specific implementation method is as follows: after the automatic switching conditions are met, the main board sends the switching command 0xAA to the standby board through handshake communication, th...

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PUM

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Abstract

The invention discloses a dual-redundancy CPU control panel based on a DSP and a CPLD, which comprises a main board and a backup board which are mutually independent. The backup board is a hot backupCPU control panel of the main board, and the main board and the backup board exchange fault state information and a switching instruction through an RS422 bus 3; the main board and the standby board simultaneously obtain the discrete quantity and the analog quantity of the equipment on the airplane through the discrete quantity acquisition module and the analog quantity acquisition module; and theCPLD device on the standby board is connected to the CPLD device of the main board through two discrete magnitude output lines and is used for resetting the main board. According to the technical scheme that the redundant backup is used for improving the reliability of the system, the backup is conducted on key components in the system, when the key components break down, the faulted components are isolated, and the standby components are started, so that the normal operation of the system is guaranteed, and the reliability level of the system is improved.

Description

technical field [0001] The invention relates to redundancy switching control, which belongs to the field of embedded computer control, in particular to a dual-redundancy CPU control board based on DSP and CPLD. Background technique [0002] The flight control computer controls the power distribution management machine through the bus to manage the power consumption status of the electrical equipment on the aircraft. As an important power distribution management device on board, the power distribution management machine controls the power on and off of most devices on board. The fault state of the power distribution management machine directly affects the flight safety of the aircraft. [0003] In the prior art, the power distribution management machine of the flight control computer generally uses a control board for power distribution management and control. The bus module, acquisition module, and control module of the control board are taken as a whole, and the failure o...

Claims

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Application Information

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IPC IPC(8): G06F11/20
CPCG06F11/2038
Inventor 姬盼盼胡春枝王天南姚鉴峰
Owner 天津航空机电有限公司
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