A method for refreshing redundant controllers based on can lines
A controller and redundant technology, applied in general control systems, control/regulation systems, instruments, etc., can solve problems affecting the progress of controller development and test stages, refresh mode is not easy to reuse, refresh time is long, etc., to speed up development and test progress, improve refresh efficiency, and high applicability
Active Publication Date: 2019-09-20
安徽航瑞航空动力装备有限公司
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Problems solved by technology
[0004] Due to the particularity of the industry, aero-engines have high safety performance requirements and standard requirements, so redundant controllers are generally used to improve the safety of the control system in hardware, but the refresh time of the controller is generally too long, and the refresh efficiency is relatively low. Low, and the refresh mode of different controllers is not easy to reuse, which affects the progress of the development and test phase of the controller, and also increases the difficulty of verifying and checking the data update of after-sales controllers
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[0013] Referring to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention include the shape, structure, mutual position and connection relationship of each part, the function and working principle of each part, and the manufacturing process of the various components involved. And the method of operation and use, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.
[0014] Feature 1: Refreshed network composition
[0015] In the present invention, the external refresh device and the redundant controller form a CAN network, and the network includes each node of the external refresh device and the internal control unit of the redundant controller, and the external refresh device loads and parses the code and data and then sends them to the control unit node, The b...
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The invention discloses a method for refreshing a redundant controller based on a CAN line. The method is based on a CAN network including an external refreshing device and a redundant controller. The external refreshing device includes a code data unit and an external refreshing device control unit, the code data unit loads the parsing code and the data, and then transmits the parsing code and the data to the external refreshing device control unit, and the guiding program of the external refreshing device control unit receives the code and data and writes the code and data into the FLASH in the control unit. The external refreshing device is connected to the CAN network via a CANBUS device, the control unit inside the redundant controller is connected to the CAN network via a CAN circuit interface on a chip, and a controller EAU_A and a controller EAU_B are arranged in the redundant controller. The interaction of the controller EAU_A and the controller EAU_B is connected via the CAN interface.
Description
technical field [0001] The invention belongs to the technical field of avionics control, and in particular relates to a method for refreshing a redundant controller based on a CAN line. Background technique [0002] The engine controller code or data refresh is generally an external data flashing tool that sends data information to the ECU through the ECU communication network (mostly CAN bus at present), so as to realize the management and update of ECU data. [0003] In the development stage of the controller, the debugging tool can be directly connected to the controller circuit board through a specific interface such as the JTAG port for refreshing, without refreshing the controller through an external refreshing tool. In the testing stage of the controller, the complex test environment may interfere with the signal and damage the control In this case, the controller circuit board cannot be directly refreshed through a specific interface, and the program or data of the c...
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IPC IPC(8): G05B9/03
Inventor郭靖周俊袁东东汪兴
Owner安徽航瑞航空动力装备有限公司