Monitoring device for motor operation efficiency under complex conditions and method thereof

Abstract

The invention relates to the field of motor operation state detection, and particularly relates to a monitoring device for motor operation efficiency under complex conditions and a method thereof. The device comprises a power supply module, a motor, a signal acquisition module, a processor module, a motor control module and a display module. The input end of the motor is electrically connected with the output end of the power supply module. The input end of the signal acquisition module is electrically connected with the output end of the motor. The input end of the processor module is electrically connected with the output end of the signal acquisition module and used for calculating real-time operation efficiency of the motor. The input end of the motor control module is electrically connected with the output end of the processor module. The output end of the motor control module is electrically connected with the input end of the power supply module. The input end of the display module is electrically connected with the output end of the processor module. A motor operation system having a frequency converter can be monitored so as to be simple and reliable with no requirement for installation of a torque sensor. The device is also suitable for the occasions of high motor power, and efficiency and monitoring precision are high.

Description

technical field [0001] The invention relates to the field of motor running state monitoring and detection, in particular to a monitoring device and method for motor running efficiency under complex working conditions. Background technique [0002] In the field of motor operation status monitoring and detection, a very important link is the online real-time measurement of motor operation efficiency, that is, the use of scientific motor efficiency measurement methods to obtain the real-time operation efficiency of the motor. [0003] Existing motor efficiency measurement devices generally obtain the output power of the motor by installing a speed sensor and a torque sensor. The disadvantages of this online monitoring method are: [0004] 1. Special connection tooling is required. Improper installation will increase the torque measurement error or even damage the torque meter; [0005] 2. The measurement range of the torque sensor is narrow, too large torque, too high speed wi...

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Problems solved by technology

[0011] In order to solve the above problems, the object of the present invention is to propose a monitoring system and method for motor operating efficiency under complex working conditions, which can solve the problem that the operating efficiency of the motor cannot be monitored under complex working conditions

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