IO equipment and microcomputer protection device
A technology of microcomputer protection device and IO device, applied in the direction of instruments, electrical digital data processing, etc., can solve the problems of non-interchangeability of positions, difficult to expand, etc., to reduce the scope of faults, reduce the development scale, and have strong scalability Effect
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Embodiment 1
[0032] An IO device, IO device is the abbreviation of Input&Output, that is, input and output, which is composed of a general-purpose core board and an expandable backplane. The general-purpose core board completes various IO module functions, and the expandable backplane cooperates with the core board to complete data input and output and isolation , can have various changes according to the requirements, and the IO devices with new features only need to design the expansion baseboard, which has strong scalability. The configuration file is solidified when the IO device leaves the factory, and the configuration file is sent to the protection CPU through the CAN bus. The protection CPU parses the configuration file to generate a linked list of IO device description words, and makes adaptive control of the IO device according to the device description word during operation, realizing the IO device position independent. The problem of poor scalability of IO equipment resources o...
Embodiment 2
[0034] Please refer to figure 1 , a microcomputer protection device system architecture diagram, the protection CPU1 and the protection CPU2 are connected to the CAN bus through the FPGA, the IO device is connected to the CAN bus through the core board, and the CAN bus establishes a high-bandwidth communication channel between the protection CPU and the IO device. Uniform hardware encoding of the address bit Addr, so as to assign a unique address to each IO device, and the IO device identifies the Addr port to obtain its own address, so that each IO device has a unique legalized identity in the system.
[0035] figure 2 A schematic diagram of the IO device architecture is given. The IO device adopts the design method of the core board and the expandable backplane. The core board is designed with FPGA and Flash storage unit. The FPGA is connected to the CAN bus to realize the communication between the IO device and the protection CPU. The Flash stores the IO Device configurat...
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