Discrete magnitude acquisition power on BIT self-detection circuit based on miniature relay

Abstract

The invention relates to a discrete magnitude acquisition power on BIT self-detection circuit based on a miniature relay, belonging to the field of aviation electrical technologies. In the circuit provide by the invention, a dual-path multi-contact relay is used for respectively realizing switching of discrete magnitude acquisition channels and simulation of discrete magnitude signals, and scale and complexity level of the BIT self-detection circuit are reduced greatly; by a mode of power on BIT detection, influence on system works is reduced, and false alarm rate is reduced effectively. Design of the circuit and a high level voltage division calculation process meet aviation product top-down design requirements, elements and devices parameters are simple to calculate, and the circuit hasa wide range of application and is a discrete magnitude acquisition BIT self-detection circuit with higher use value. The circuit is applied to a discrete magnitude power on BIT self-detection circuitalready, has good BIT detection effect, is highly reliable and has low false alarm rate.

Description

Technical field [0001] The invention belongs to the technical field of aeronautics, and specifically relates to a discrete quantity collection and power-on BIT self-detection circuit based on a miniature relay. Background technique [0002] Airborne electromechanical controllers need to collect a large number of external and internal discrete signals of the controller due to the system working requirements. The signals are generally used as the basis for judgment of start / stop control, cross-linking equipment status feedback, and product power supply status. Due to the improvement of the level of aircraft intelligence, the requirements for the BIT self-detection ability of the system are getting higher and higher, and for some discrete signals that affect the working sequence and status of the system, there is still a higher importance level, which requires the controller The discrete quantity acquisition circuit is designed for BIT self-detection circuit. For discrete collectio...

AI Technical Summary

Problems solved by technology

However, the introduction of the BIT self-detection circuit increases the volume, weight and total component failure rate of the product.

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