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Reliable power supply circuit of triple redundancy embedded computer system

An embedded computer and power supply circuit technology, applied in circuit devices, emergency protection circuit devices, electrical components, etc., to achieve the effect of improving power supply reliability, eliminating system failure, and eliminating failure modes

Active Publication Date: 2010-07-14
BEIJING INST OF ASTRONAUTICAL SYST ENG
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  • Abstract
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Problems solved by technology

[0004] The technical problem of the present invention is: to overcome the deficiencies of the prior art, to provide a reliable power supply circuit for a triple-redundant embedded computer system, and to solve the problem of triple-redundant embedded computer system The reliability of the power supply circuit of the computer can be solved, and the single-point failure mode of the system failure caused by the open circuit or short circuit fault is eliminated

Method used

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  • Reliable power supply circuit of triple redundancy embedded computer system
  • Reliable power supply circuit of triple redundancy embedded computer system
  • Reliable power supply circuit of triple redundancy embedded computer system

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Embodiment Construction

[0019] Specific embodiments of the present invention are respectively as figure 2 with image 3 Shown:

[0020] Such as figure 2 As shown, it includes two independent DC stabilized power supplies, four fuses 1, two resistors 2, four DC / DC secondary power supply modules and two diodes 3, one fuse is connected in series with one resistor, and one fuse is connected in parallel It is then connected to the output end of the positive busbar of each DC regulated power supply, and the busbar is short-circuit protected. After short-circuit protection, each DC regulated power supply is divided into two circuits to supply power for two DC / DC secondary power supply modules. Select two DC / DC secondary power supply modules from the DC / DC secondary power supply modules powered by different DC regulated power supplies, and the outputs of the selected two DC / DC secondary power supply modules are each connected in series with a diode and connected in parallel as one of them. One CPU board ...

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Abstract

The invention relates to a reliable power supply circuit of a triple redundancy embedded computer system, in which a fuse is connected with an output end of a positive bus bar of each DC stabilized power source after being connected with a resistor in series and then connected with a fuse in parallel so as to carry out short circuit protection on the bus bar, each DC stabilized power source is divided into two paths after short circuit protection to supply power for two DC / DC secondary power source modules, two DC / DC secondary power source modules for which power is supplied by different DC stabilized power sources are selected, the output ends of the two selected DC / DC secondary power source modules are respectively connected with a diode in series and then are connected together in parallel to supply power for a CPU board, and the other two DC / DC secondary power source modules respectively supply power for another two CPU boards. The invention solves the problem of reliability of the power supply circuit of the triple redundancy embedded computer and eliminates the single point failure mode of system failure caused by open circuit or short circuit failure.

Description

technical field [0001] The invention relates to a reliable power supply circuit for a triple redundant embedded computer system. Background technique [0002] In high-reliability applications such as launch vehicles, some core embedded computers adopt a triple-redundant design. Three identical CPUs work independently and in parallel. One of the key links of reliability. [0003] In the past, the three-redundant embedded computer was powered by a single power supply, or it was powered by a dual power supply directly connected in parallel, such as figure 1 As shown, both power supply circuits have a single-point failure failure mode, that is, a failure in one place leads to the collapse of the entire system. Contents of the invention [0004] The technical solution problem of the present invention is: overcome the deficiency of prior art, provide a kind of reliable power supply circuit of triple redundant embedded computer system, solve the reliability problem of the power...

Claims

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Application Information

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IPC IPC(8): H02J9/00H02H7/22
Inventor 张学英
Owner BEIJING INST OF ASTRONAUTICAL SYST ENG
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