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Multipath power supply power-on detection circuit

A technology of multi-channel power supply and power supply detection, applied in the field of multi-channel power supply power-on detection circuit and a certain type of infrared search and tracking system, can solve the problems of increasing the difficulty of product repair and troubleshooting, complex circuit form and false alarm, etc., to achieve reliable High performance, simple circuit and strong scalability

Pending Publication Date: 2021-03-09
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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AI Technical Summary

Problems solved by technology

[0003] At present, power detection is generally implemented by a combination of single-chip microcomputer, voltage comparator, or AD acquisition circuit. The circuit form of this implementation method is complex and there are certain false alarms in use, which increases the difficulty of product repair and troubleshooting.

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  • Multipath power supply power-on detection circuit

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Embodiment Construction

[0013] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0014] A multi-channel power supply detection circuit includes a power supply detection circuit and a power-on indication circuit.

[0015] The functional description of the multi-channel power supply power-on detection circuit is as follows:

[0016] The power supply detection circuit completes the detection of the signal after the power supply voltage division and outputs the corresponding detection signal. If the front-end power supply is normal, the output is a high-level signal, and if any of the front-end power supply has no output, the output is a low-level signal. In this paper, 2-way power supply is taken as an example. The number of power supply detection circuits in this circuit can be expanded to the next level according to actual needs (the part marked with a rectangular frame in the figure). After the power signal is converted, it is output as a TT...

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Abstract

The invention relates to a multipath power supply power-on detection circuit, and belongs to the technical field of photoelectric circuit detection. The circuit comprises a power supply detection circuit and a power-on indication circuit, the power supply detection circuit completes detection of signals after power supply voltage division and outputs corresponding detection signals, if front-end power supplies are normal, the signals are output as high-level signals, and if any one of the front-end power supplies has no output, the signals are output as low-level signals. The power-on indication circuit completes voltage division of different types of power supply signals and drives a light emitting diode to work so as to complete indication of the power-on state of the power supply. A power supply power-on detection circuit method is simple in principle, detection and power-on indication of multiple paths of direct-current power supplies are achieved by selecting universal components,and the method is flexible to use, high in universality and capable of being expanded.

Description

technical field [0001] The invention belongs to the technical field of circuit detection, and in particular relates to a multi-channel power supply power-on detection circuit, which is applied to a certain type of infrared search and tracking system. Background technique [0002] According to the requirements of the use process of a certain type of infrared search and tracking system, it is necessary to monitor and detect the power-on working status of each power supply. However, due to the variety of power supply types and the limited space size of the circuit board, it is necessary to design a circuit with strong versatility and simple and reliable interface. to meet system usage requirements. [0003] At present, power supply detection is generally implemented by a combination of single-chip microcomputer, voltage comparator or AD acquisition circuit. The circuit form of this implementation method is complex and there are certain false alarms in use, which increases the d...

Claims

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Application Information

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IPC IPC(8): G01R31/40
CPCG01R31/40
Inventor 谢青波李鹏飞张福明
Owner LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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