Large external rotor permanent magnet synchronous motor permanent magnet rotor wireless temperature monitoring device

Abstract

The invention relates to a mine hoist, and particularly relates to a large external rotor permanent magnet synchronous motor permanent magnet rotor wireless temperature monitoring device comprising astator carrier which is arranged on the motor spindle and a stator which is arranged on the stator carrier. The external rotor is composed of a rotor shell and permanent magnet poles. The rotor shellsleeves the stator. The permanent magnet poles are installed on the internal wall of the rotor shell. The two ends of the rotor shell are provided with end plates. The end parts of the permanent magnet poles are provided with sensors which are connected with one end of a shielding signal line. The other end of the permanent magnet penetrates through the end plates to be connected with a sampling monitor. The sampling monitor is installed on the external side of the end plates. The sampling monitor comprises a micro-processing unit and a wireless transmitting unit. The wireless transmitting unit is matched with the wireless receiving unit in the control room. The problem of difficulty of temperature measurement of the large synchronous motor permanent magnet rotor can be effectively solved,wireless temperature measurement transmission is not interfered by the magnetic field and the working environment temperature of the micro-processing unit chip is great.

Description

technical field [0001] The invention relates to a mine hoist, in particular to a wireless temperature monitoring device for a permanent magnet rotor of a large outer rotor permanent magnet synchronous motor. Background technique [0002] Since the successful development of the world's first built-in hoist, the hoist has been gradually developed and perfected, and has been better applied in the field of mine hoists. Together, it is a mechatronic equipment with simple structure, small footprint, and incomparable advantages over conventional hoists. This equipment is the development direction of hoists. [0003] my country's processing and manufacturing industry has experienced more than 30 years of rapid development, and many fields have already ranked among the top in the world. It is fully capable of manufacturing large-scale equipment in terms of technology, equipment, and processing capabilities, and automation information technology and Internet of Things technology are a...

AI Technical Summary

Problems solved by technology

The problem brought by this method is that the temperature acquisition module and the wireless transmission unit are close to the strong alternating magnetic field area of ​​the rotor, and the module operation and wireless transmission signals are easily interfered by the magnetic field. Environmental impact, harsh working environment, poor system reliability

The post-processing module and receiving display unit described in this invention patent application is a short-distance transmission, which is sent to the wireless receiving unit to send the signal directly to the display unit. (1) There is no two-way MCU chip digital communication

(2) Intelligent processing cannot be realized according to the operating conditions of the equipment (starting and stopping, load size, etc.)

(3) There is no intelligent sleep to reduce the power consumption and heat dissipation of the rotating AP

(4) There is no software intelligent acquisition for sensors

(5) The wireless transmission described in this invention patent application uses bluetooth to solve long-distance transmission, and the industrial field application is limited. (6) The wireless transmission described in this invention patent application uses wifi transmission to consume a lot of power, and the capacity of the transmitting battery is limited. Limited, on-site maintenance is difficult

(7) High-frequency transmission industrial site shielding, limited application

(9) The system is complicated, the failure rate is high, the maintenance volume is large, and it is difficult to realize

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