Adaptive heating start-stop circuit and temperature monitoring detection circuit

Abstract

The invention relates to an adaptive heating start-stop circuit and a temperature monitoring detection circuit. The adaptive heating start-stop circuit comprises a temperature relay, a solid relay, aphotoelectric coupler, a heating component and a filtering circuit; the filtering circuit comprises a filtering resistor and a filtering capacitor; one end of the temperature relay is connected with ahigh voltage, and the other end of the temperature relay is electrically connected with one end of the heating component through the solid relay; the other end of the heating component is grounded; the filtering circuit is connected to a heating resistor in parallel, and the two ends of the filtering circuit are connected with the photoelectric coupler in parallel; the output of the photoelectriccoupler is used for representing whether the state of heating is being carried out or not; and the control end of the solid relay is connected with a control signal for controlling opening and closing of the solid relay. According to the adaptive heating start-stop circuit disclosed by the invention, more components and circuits which are slightly low in quality grade while are stably controlledare available, so that the capability of the system for resisting the severe environment is improved, and the development period and cost of the system are reduced.

Description

technical field [0001] The invention belongs to the design technology of an aircraft management system, and relates to an adaptive heating start-stop circuit and a temperature monitoring and detection circuit. Background technique [0002] In the design of the aircraft management system, the reliability design of the circuit must be considered. The reliability of the circuit is affected by many aspects, and temperature stress is one of the influencing factors. The operating temperature of components or functional circuits is required to be limited within the recommended value, so as to avoid reducing the reliability of components or functional circuits due to exceeding the recommended value, resulting in reduced service life or even damage. At present, many high-quality components have high prices, long cycle times and limited procurement. After successful procurement, after-sales maintenance becomes a problem, which creates a bottleneck for circuit design and will inevitabl...

AI Technical Summary

Problems solved by technology

The operating temperature of components or functional circuits is required to be limited within the recommended value, so as to avoid reducing the reliability of components or functional circuits due to exceeding the recommended value, resulting in reduced service life or even damage

At present, the price of many high-quality components is high, the cycle is long, and the procurement is limited. After the successful procurement, the after-sales maintenance becomes a problem, which creates a bottleneck for the circuit design and will inevitably increase the development cycle and cost of the system.

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