Rotating speed measuring instrument of totally-enclosed variable frequency motor

• Main Authors: LUO QINGGANG, CHEN DA, CHEN LONG, XIE CHONGBAO, YAN DONG, WANG HUAN
• Format: Patent
• Language: Chinese; English
• Published: 05.12.2023
• Subjects: INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT; MEASURING; MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK; PHYSICS; TESTING

The utility model relates to a rotating speed measuring instrument of a totally-enclosed variable frequency motor. The rotating speed measuring instrument comprises a Hall sensor arranged on a motor cable and used for collecting frequency signals of alternating voltage, a signal amplification circuit used for processing the frequency signals of the alternating voltage, a key and display circuit, a signal processing circuit and a power supply used for supplying power to the rotating speed measuring instrument. The Hall sensor is connected with the signal amplification circuit, and the signal amplification circuit and the key and display circuit are connected with the signal processing circuit. The device can be used for detecting the rotating speed of the totally-closed variable frequency motor and displaying the rotating speed in real time, and is suitable for all types of variable frequency motors. 本实用新型涉及一种全封闭变频电机的转速测量仪，包括：设置在电机电缆上用于采集交流电压的频率信号的霍尔传感器、用于交流电压的频率信号处理的信号放大电路、按键与显示电路、信号处理电路以及为转速测量仪供电的电源；所述霍尔传感器与