Non-contact angle tracking system and method based on passive RFID

Abstract

The invention discloses a non-contact angle tracking system and method based on passive RFID (Radio Frequency Identification), which are used for measuring the rotation angle of a rotating shaft in an industrial environment. The system comprises a passive angle sensor, an angle sensing all-in-one machine and a data processing platform, wherein the angle sensing all-in-one machine is provided with an RFID reader and a linear polarized antenna; the passive angle sensor comprises a communication module pasted with an RFID tag and a metal reflection object used for reflecting rotation characteristics. The angle sensing all-in-one machine continuously communicates with the passive angle sensor to obtain label signal data returned by the passive angle sensor and transmits the data to the data processing platform, and the data processing platform constructs a polarization model according to data characteristics to quantify the relation between the rotating shaft rotation angle and metal object reflection signal energy. Therefore, the rotation angle at each moment is calculated, and angle tracking is realized. According to the invention, a non-contact sensing technology is adopted, a rotating shaft does not need to be contacted, and accurate rotation angle tracking is realized by obtaining passive angle sensing.

Description

technical field [0001] The invention belongs to the technical field of RFID passive perception and industrial Internet, and in particular relates to a non-contact angle tracking system and method based on passive RFID. Background technique [0002] In today's industrial environment, rotating shafts are widely used in all kinds of machines to realize the rotation and movement of machines, such as conveyor belts, raw material reels and so on. figure 2 Two real industrial scenarios are shown, both of which need to use a rotating shaft to achieve continuous rotation and provide rotation power through a motor. But as the shaft ages and the friction on the shaft increases, the shaft often cannot continue to turn as intended, leading to stalling problems. Stalled rotor not only endangers safety, such as electrical hazards caused by the sudden stop of the motor, but also affects product quality, such as insufficient machine tool power leading to product manufacturing defects. Ther...

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Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a non-contact angle tracking system and method based on passive RFID, so as to solve the relatively high cost and delay caused by manual periodic detection in the prior art, And the unnecessary maintenance overhead caused by the use of inertial sensors or cameras

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