Motor failure diagnosis device and method
A fault diagnosis and electric motor technology, which is applied in the direction of engine testing, machine/structural component testing, measuring devices, etc., can solve problems such as time-consuming, inaccurate diagnosis accuracy, and high rigidity, so as to speed up data analysis and realize Effect of real-time diagnosis function
Inactive Publication Date: 2012-09-19
BEIQI FOTON MOTOR CO LTD
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[0002] At present, the fault diagnosis of on-board motors is basically evaluated and diagnosed by electronic means of current and voltage. The diagnosis result of electronic fault diagnosis needs many factors to be obtained comprehensively, and the rigidity is relatively large (the diagnosis result is only yes or no, and a fault occurs) , the diagnostic accuracy is not very accurate, and it takes a lot of time, so it cannot play the role of early warning of motor failure symptoms
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[0025] Specific embodiments of the present invention will be described in detail below. It should be noted that the embodiments described here are for illustration only, and are not intended to limit the present invention.
[0026] Please refer to figure 1 , is a structural block diagram of an embodiment of the motor fault diagnosis equipment of the present invention, including: a sound receiving device, used to collect real-time noise signals of the motor; a signal conversion device, connected to the sound receiving device, used to digitize the noise signal and a signal processing device, connected to the signal conversion device, receiving the digitized noise signal and obtaining a real-time characteristic curve of the noise signal after processing, and comparing the characteristic curve with the pre-stored noise signal reference curve, thereby Diagnose if the motor is malfunctioning.
[0027] The sound receiving device may be a microphone placed near the motor; the microp...
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The invention provides a motor failure diagnosis device which comprises a sound receiving device, a signal converter and a signal processing device, wherein the sound receiving device is used for collecting real time noise signals of a motor; the signal converter is connected with the sound receiving device and used for digitizing the noise signals; and the signal processing device is connected with the signal converter, receives the digitized noise signals, obtains a characteristic curve of the real time noise signals after processing, and compares the characteristic curve with prestored noise signal characteristic curve, so that whether a failure exists in the motor or not is diagnosed. The motor failure diagnosis device and a method have the advantages of being not high in rigidity, simple and convenient, short in time consumption and capable of play a role in early alarming when the motor breaks down.
Description
technical field [0001] The invention relates to a motor fault diagnosis device and method, in particular to a device and method for collecting motor noise signals for processing, analyzing and evaluating the sampled noise, and then comparing reference curves to realize real-time diagnosis of a vehicle motor. Background technique [0002] At present, the fault diagnosis of on-board motors is basically evaluated and diagnosed by electronic means of current and voltage. The diagnosis result of electronic fault diagnosis needs many factors to be obtained comprehensively, and the rigidity is relatively large (the diagnosis result is only yes or no, and a fault occurs) , the diagnostic accuracy is not very accurate, and it takes a lot of time, so it cannot play the role of early warning of motor failure symptoms. Contents of the invention [0003] In order to solve the deficiencies in the above-mentioned background technology, the present invention introduces mechanical diagnosi...
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IPC IPC(8): G01M15/00
Inventor 丁怀宇孙宁陈瀚高景伯甄顺田辛彦红
Owner BEIQI FOTON MOTOR CO LTD