Detection circuit and automatic detection device
A technology for detecting circuits and circuits, applied in measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as inability to judge intuitively, complicated operation, etc.
Active Publication Date: 2019-03-01
SHENZHEN GONGJIN ELECTRONICS CO LTD
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[0004] Based on this, it is necessary to provide a detection circuit and an automatic detection device for the detection of the uninterrupted power supply switching process, which needs to be judged by collecting waveforms through an oscilloscope, and the operation is complicated and cannot be judged intuitively.
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[0028] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of ...
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The present invention relates to a detection circuit connected to a power supply system. The detection circuit comprises a switch tube with high level conduction, a photoelectric coupling unit, an indicating circuit, a touch switch, and a voltage divider filter circuit. In the process of uninterrupted power supply switching, through pressing the touch switch of the above detection, the switch tube is switched on, a loop is formed by the indicating circuit and a photoelectric coupling light emitting source, the indicating circuit starts to work, and the normality of the power supply system is indicated. When the touch switch resumes to a normally open state, a photoelectric coupling unit light receiving device is switched on, the indicating circuit starts to work, and the normality of the power supply system is indicated. When a momentary power interruption appears, the photoelectric coupling unit is switched off, and the touch switch is in a normally open state. When the momentary power interruption is stopped and power is restored, the switch tube has no driving, and the indicating circuit is switched on and in a normal state. In the process of uninterruptedly switching a power supply system, the detection circuit can effectively prompt the state of momentary power interruption. In addition, the invention also provides an automatic detection device.
Description
technical field [0001] The invention relates to the field of uninterrupted power supply circuit system, in particular to a detection circuit and an automatic detection device. Background technique [0002] A variety of backup power supplies are widely used in many electrical equipment to provide uninterrupted power supply to the system to maintain normal operation after a sudden power failure in the mains. In the production test of this kind of backup power supply, it is necessary to strictly test the switching action of the uninterrupted power supply, mainly to test whether there is an instantaneous power failure during the switching from the mains to the backup power supply, and whether the power supply voltage fluctuates downward and drops to the receiving power supply. The range where the system cannot work, causing the work of the power receiving system to be interrupted or reset. [0003] At this stage, the general detection method for the uninterrupted power supply s...
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IPC IPC(8): G01R31/00G01R31/02
CPCG01R31/00G01R31/50
Inventor 王小强李晓增张巧文
Owner SHENZHEN GONGJIN ELECTRONICS CO LTD