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Self-inspection circuit applied to aviation electric heating control system

A technology of control system and self-test circuit, which is applied in general control system, control/adjustment system, test/monitoring control system, etc., and can solve the problems of unrecognized open circuit fault mode, unrecognized wrong output instructions, and failure to collect processor instructions, etc. question

Active Publication Date: 2019-12-06
TIANJIN JINHANG COMP TECH RES INST
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  • Abstract
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AI Technical Summary

Problems solved by technology

Disadvantages of the self-inspection circuit of the traditional aviation electrothermal control system: 1. Since there is no output current detection of the output circuit, only the detection of the output voltage, no specific voltage value is detected, and when the circuit is open, the failure mode of the open circuit cannot be identified; 2. The on-off instruction judgment is based on the instruction of the processor operation, and the instruction output by the processor is not collected. When the on-off instruction is output by mistake, the wrong output instruction cannot be identified

Method used

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  • Self-inspection circuit applied to aviation electric heating control system

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Embodiment Construction

[0028] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Such as figure 1 As shown, the present invention provides a self-inspection circuit applied to the aviation electrothermal control system, including a processor circuit, a drive circuit, an output command recovery circuit, a power output circuit, an input AC voltage acquisition circuit, an output AC voltage acquisition circuit, an output AC current acquisition circuit;

[0030] The processor circuit is connected to the drive circuit, and the processor circuit is used to output a control signal to the drive circuit to control the power output circuit to be turned on and off;

[0031] The processor circuit is connected to the output command recovery circuit, and the processor circuit is also used for receiving th...

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Abstract

The invention relates to a self-inspection circuit applied to an aviation electric heating control system, and belongs to the technical field of aviation electric heating control systems. Through acquisition of a loop on-off output instruction, an input voltage, an output voltage and an output current, self-inspection is carried out on the aviation electric heating control system, so that judgmentand positioning of the processor on-off output function, the power output function, and the output loop normal, open circuit and short circuit states are realized.

Description

technical field [0001] The invention relates to the technical field of aviation electric heating control systems, in particular to a self-inspection circuit applied to aviation electric heating control systems. Background technique [0002] The aviation electric heating system uses the AC power supply on the aircraft to supply power to the heating element or pipeline valve, and feeds back the real-time temperature according to the surface temperature sensor of the heating element, and controls the output circuit to be turned on and off periodically to maintain the heating element or pipeline at a certain temperature within range. The working principle of the self-inspection circuit of the traditional aviation electrothermal control system is usually to judge the working state of the control system by detecting the presence or absence of the output circuit voltage and comparing it with the output on-off command. Disadvantages of the self-inspection circuit of the traditional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02G01R19/25
CPCG05B23/0208G01R19/25Y02P90/02
Inventor 仝步升刘强马云峰
Owner TIANJIN JINHANG COMP TECH RES INST
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