Fault latch circuit for improving stability of airborne computer

An airborne computer and latch circuit technology, applied in the direction of logic circuits with logic functions, reliability improvement and modification, etc., to achieve the effects of high fault identification ability, high portability, and accurate fault analysis.

Pending Publication Date: 2021-01-26
XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a fault latch circuit that improves the stability of the airborne computer to solve various hidden dangers in the existing fault latch circuit, thereby improving the reliability of the airborne computer system

Method used

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  • Fault latch circuit for improving stability of airborne computer
  • Fault latch circuit for improving stability of airborne computer
  • Fault latch circuit for improving stability of airborne computer

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Embodiment Construction

[0039] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0040] Aiming at the problems in the background technology, the present invention designs a kind of fault latch circuit that improves the stability of the airborne computer, and carries out anti-jamming design to the signal at the front end, avoids the somersault phenomenon caused by the jump of the latch output; in addition, the final monitoring As a result, a reset circuit is introduced, and once a fault occurs, the system automatically handles it; after anti-jamming, the system stability is improved through two-stage processing.

[0041] In addition, the innovation of the ...

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Abstract

The invention discloses a fault latch circuit for improving the stability of an airborne computer, and the circuit carries out the three-stage processing of preceding-stage anti-interference, fault latch and rear-end protection of a monitoring signal on hardware, enables a system to finally output a stable and reliable monitoring result, and carries out the latch processing of a fault. The circuitspecifically comprises a comparison monitoring sub-circuit, a fault latch sub-circuit and a control gate sub-circuit which are connected in sequence, the comparison monitoring sub-circuit is a front-end anti-interference circuit and is used for removing the interference of the excitation end of the latch and inputting a stable excitation source to the fault latch sub-circuit. The fault latch sub-circuit is used for acquiring a fault monitoring result and performing latch processing when a fault is monitored; the control gate sub-circuit is a rear-end protection circuit, and is used for enabling the fault latch circuit to be reset after a fault occurs, guaranteeing that the fault latch sub-circuit can work in a correct time sequence after reset, and carrying out circuit protection on the fault latch circuit in a power-on initial state. And various hidden dangers in the existing fault latch circuit are solved.

Description

technical field [0001] The invention belongs to the technical field of high-reliability design of an airborne computer and discloses a fault latch circuit for improving the stability of an airborne computer. Background technique [0002] For the design of high-reliability airborne computer, the reliability of airborne system is a very important performance index. In the design process of the airborne system, many important signals, such as power signal, secondary power effective signal, discrete control source, etc., not only need stable output capability, but also need a reliable fault latch circuit to obtain the fault status in real time. It is especially important to improve the safety and stability of the airborne system by carrying out corresponding control strategies according to the state of each monitoring signal. [0003] Fault latching is generally implemented by a gated latch, but in the traditional latch design, it is more sensitive to glitches during the effect...

Claims

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Application Information

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IPC IPC(8): H03K19/003H03K19/20
CPCH03K19/003H03K19/20Y02D10/00
Inventor 安书董李明郑久寿康晓东王昭马子飞
Owner XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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