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Direct-current fan and running control and detection circuit thereof

A DC fan and operation control technology, which is applied to excitation or armature current control, pump control, non-variable pumps, etc., can solve the problems of low accuracy of detection results and low detection efficiency, and achieve improved detection accuracy, The effect of reducing the possibility of missed detection and improving detection efficiency

Inactive Publication Date: 2014-11-26
OCEANKING DONGGUAN LIGHTING TECH +2
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Problems solved by technology

[0004] The purpose of the present invention is to provide a DC fan operation control and detection circuit, which aims to solve the problem of low detection efficiency and low detection results caused by the output of the speed detection signal and the alarm signal on different signal lines in the existing DC fan. The problem of low accuracy

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  • Direct-current fan and running control and detection circuit thereof
  • Direct-current fan and running control and detection circuit thereof

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] The embodiment of the present invention uses a DC fan operation control and detection circuit including a Hall sensor, a main control module, and a signal output module. The speed detection pulse signal and stall detection level signal output by the control module output the speed detection signal or alarm signal from the same output terminal, thereby realizing the purpose of outputting the speed detection signal and alarm signal on the same signal line, which is convenient for users to detect. The detection efficiency is improved, and the signal detection at the same output terminal can gre...

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Abstract

The invention, which belongs to the field of fan control and running state detection, provides a direct-current fan and a running control and detection circuit thereof. The running control and detection circuit including a hall sensor, a main control module and a signal output module is used. The hall sensor is sued for detecting a motor running state of the direct-current fan; the signal output module outputs a rotating speed detection signal or an alarm signal from the same output terminal according to a rotating speed detection pulse signal and a stopping detection level signal that are outputted by the main control module. Therefore, an objective of outputting of the rotating speed detection signal and an alarm signal at the same signal line is achieved; the user can carry out detection conveniently; and the detection efficiency is improved. Because signal detection is carried out at the same output terminal, the missing detection possibility can be substantially reduced, thereby further improving the detection accuracy.

Description

technical field [0001] The invention belongs to the field of fan control and operation state detection, in particular to a DC fan and its operation control and detection circuit. Background technique [0002] At present, while DC fans are widely used in various places, in order to allow users to grasp the actual speed and operating status of DC fans, the main control chip inside the existing DC fan will output a speed detection signal according to the operating status of the fan, and Output an alarm signal when the fan stops rotating due to failure (such as being blocked by external force or motor burnout), and the user can know the working status of the DC fan by detecting the speed detection signal and alarm signal, and when the fan motor fails and stops rotating Repair the DC fan in time. [0003] However, although the existing DC fan can provide the speed detection signal and the alarm signal, these two signals are not output on the same signal line, so the user must de...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P7/29F04D27/00
Inventor 周明杰徐亮亮
Owner OCEANKING DONGGUAN LIGHTING TECH
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