Cold and hot standby load cross control method and circuit considering power-on and reset
A control circuit, heating and cooling technology, applied in general control systems, control/regulation systems, instruments, etc., can solve the problems of reduced reliability, weak versatility, single circuit control mode, etc., to prevent series power and simplify control circuits , the effect of reliable control
Pending Publication Date: 2020-04-28
SHANDONG INST OF AEROSPACE ELECTRONICS TECH
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Problems solved by technology
[0003] The existing circuit control method is relatively simple and has limitations:
[0004] It is only suitable for pure cold standby applications, and does not consider the application of cross-controlled public kneading hot standby loads in cold standby systems; only considers mutual exclusion during power-on; the use of multiple circuit designs is more complicated, and the reliability is reduced. Weak
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[0022] A cold and hot standby load cross control circuit that takes into account both power-on and reset is derived from the task of a central management unit of a spacecraft. The FPGA of the storage multiplexing module is designed for AB cold backup, but the USB main control chip is a hot standby module that can be powered off. Both FPGA A and B need to reliably cross-control the active and standby ARMs. The current control circuit can effectively enable and switch control rights and related input and output signals, effectively ensuring that FPGA A can effectively control the active and standby ARMs (FPGA B The machine is the same), the single machine works stably, and the function is normal during the high and low temperature cycle.
[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0024] Such as figure 2 ...
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The invention relates to a cold and hot standby load cross control method considering power-on and reset. Main and standby power supply systems, main and standby reset systems, main and standby enableright generation logic systems, and main and standby enable signal receiving and transmitting systems with control are arranged. The main and standby enable right generation logic systems are external control terminal power supplies. If the main machine is powered on and resets to an effective state and the standby machine is powered off, the main machine has an enabling right; otherwise, the standby machine is powered on and resets to the effective state, the main machine is powered off, and the standby machine has the enabling right; if the main machine and the standby machine are powered up at the same time or any one of the main machine and the standby machine is powered up but is not reset effectively, the main machine and the standby machine do not have the enabling right. The method has the beneficial effects that the method is suitable for the application situation that the common kneading hot standby load (warm standby or cold standby) needs to be controlled in a crossed modewhile main and standby machine cold standby redundancy is achieved; in addition, reliability control in the power-on process and the reset process is achieved; and the method has the advantages of being simple, reliable and the like.
Description
technical field [0001] The invention belongs to the technical field of cold and hot standby redundant control, and in particular relates to a cold and hot standby load cross control method and circuit which take into account power-on and reset. Background technique [0002] In order to improve reliability, the circuit system often adopts redundant fault-tolerant circuits, usually with cold standby, hot standby, hot standby that can be powered off (referred to as warm standby), or public kneading load / signal, etc. How to deal with different forms of Reliable and effective load control is a problem that needs to be considered frequently. [0003] The existing circuit control method is relatively simple and has limitations: [0004] It is only suitable for pure cold standby applications, and does not consider the application of cross-controlled public kneading hot standby loads in cold standby systems; only considers mutual exclusion during power-on; the use of multiple circui...
Claims
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IPC IPC(8): G05B9/03
CPCG05B9/03Y04S20/20Y02B70/30
Inventor 刘梅乔军卿于俊杰刘杰邱庆林王晓宇杨将
Owner SHANDONG INST OF AEROSPACE ELECTRONICS TECH