An adaptive heating start-stop circuit and temperature monitoring and detection circuit

Abstract

The invention relates to an adaptive heating start-stop circuit and a temperature monitoring and detection circuit. The circuit includes: a temperature relay, a solid state relay, a photoelectric coupler, a heating component, and a filter circuit; the filter circuit includes a filter resistor and a filter capacitor; one end of the temperature relay is connected to a high voltage, and the other end of the temperature relay is One end is electrically connected, the other end of the heating component is grounded, the filter circuit is connected in parallel to the heating resistor, the two ends of the filter circuit are connected in parallel with a photocoupler, the output of the photocoupler indicates whether heating is in progress, and the control terminal of the solid state relay is connected to the control Control signal for opening and closing of solid state relays. The invention makes available more components and circuits with slightly lower quality levels but stable and controlled procurement, improves the ability of the system to resist harsh environments, and reduces the development cycle and cost of the system.

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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