Self-powered wireless temperature field measuring device in closed rotating shaft

Abstract

The invention discloses a self-powered wireless temperature field measuring device in a closed rotating shaft. The device comprises a hot end tightly attached to the inner surface of the closed rotating shaft, a cold end exposed in the air and connected with a radiator, a self-powered component arranged between the hot end and the cold end and consisting of a closed loop formed by connecting n semiconductor pairs in series, an infrared transmitter for transmitting infrared signals of fixed wavelength, an infrared receiving device provided with a reference temperature sensor and a calculation and output device. By adopting a micro structure design, the device can be conveniently arranged on the inner surface of a closed shaft series part; and measurement of the radial temperature field in the high-speed closed rotating shaft is realized by self-powered wireless transmission, a power supply for supplying energy is not needed, and the measuring device can work normally for a long term under an unattended environment by using heat energy.

Description

technical field [0001] The invention belongs to the field of temperature wireless monitoring, in particular to a self-powered wireless temperature field measuring device in a closed rotating shaft. Background technique [0002] The shaft is an important part of the machine, its function is to support the rotating parts and transmit motion and power; the part that fixes the shaft and the parts on the shaft in the circumferential direction and transmits the torque is the key; the bearing is used to support the shaft and the parts on the shaft, and keep The rotation accuracy of the shaft and the reduction of friction and wear between the shaft and the bearing are all shaft parts. During the rotation of these parts, periodic friction heats up, and the temperature continues to rise, which has a great impact on the working environment of the shaft, especially for high-precision shafting parts that operate at high speed and heavy load for a long time. Heat is one of the most impor...

AI Technical Summary

Problems solved by technology

In method 1, since wireless radio frequency communication requires a large amount of energy, the power supply module is large in size and difficult to install, and it has a certain impact on the balance of the spindle in the high-speed rotation state, and the installation of the antenna in wireless communication has a great impact on the communication quality The impact is very huge, so how to install the antenna on the shafting parts has become one of the problems that affect the wide application of radio frequency communication in the temperature monitoring of shafting parts

In method 2, the infrared temperature probe measurement method used is a relatively common non-contact measurement method, but it cannot measure the internal temperature field distribution of closed shafting parts, and any object will emit infrared rays with different wavelengths and different radiant energies. They will affect each other, so the complex environment inside the closed shafting parts will affect the measurement accuracy

Images