RFID antenna radiation performance strengthening device

Abstract

The invention relates to an RFID antenna radiation performance strengthening device. According to the RFID antenna radiation performance strengthening device, a low-radiation brushless motor and a mechanism control module are fixed in a motor shielding cover on the lower surface of a mechanism bracket in parallel. A driving cam arm is fixed on an output shaft of the low-radiation brushless motor through a transmission pin, an inner ring of the driving bearing is fixed in an inner hole of the driving cam arm through a pressing sleeve, an outer ring of the bearing can rotate freely and is embedded into a supporting plate groove frame, the groove width of the supporting plate groove frame is slightly larger than the outer diameter of the driving bearing, and the driving bearing can rotate androll in a groove of the supporting plate groove frame; the supporting plate groove frame is fixed with the antenna supporting plate; the RFDI antenna is fixed on the antenna supporting plate; the supporting plate shaft is fixed on the central plane of the antenna supporting plate, the inner ring of the supporting plate bearing sleeves the supporting plate shaft and is fixed by a shaft check ring,and the inner ring of the supporting plate bearing is embedded into the inner hole of the supporting seat; and the supporting seat is fixed to the upper surface of the mechanism bracket.

Description

technical field [0001] The field of the invention belongs to the uniform field field of electromagnetic radiation of an RFID antenna of an RFID reading and identification system of the Internet of Things, and in particular relates to an electromechanical module system for enhancing the radiation range of an RFID antenna. Background technique [0002] The Internet of Things technology is another revolution in the information industry after computers, the Internet and mobile communications. As one of the supporting technologies of the Internet of Things industry, RFID technology has a strong vitality because of this opportunity. Now the RFID industry is developing rapidly. RFID systems are widely used in warehouse management, valuables, confidential items, dangerous chemicals, securities, archives, book management, production lines, transportation, unmanned supermarkets and other fields. [0003] However, the current RFID antenna still has great disadvantages. It is difficult ...

AI Technical Summary

Problems solved by technology

After the antenna is enlarged, the uneven radiation intensity of the antenna will lead to the problem of missed reading of the label

In order to increase the radiation range of the reader antenna, more readers and RFID antennas can be deployed in the reading area, but the cost of the whole system will also increase

By improving the sensitivity of the reader, the transceiver module of the RFID reader can receive weaker tag signals, or by reducing the power consumption of the tag, improving the sensitivity and forward power of the tag circuit, and expanding the reading range of the RFID system, it is necessary to develop new technologies. chips, it is difficult to meet the urgent application needs

Other methods such as multi-antenna polling, phased array antennas, and RFID antennas with reciprocating mechanisms can solve some problems in application, but they still have certain limitations, such as: multi-antenna and phased array antennas There is a problem of high cost due to the limited number of direction angles; adding a reciprocating mechanism to the RFID antenna can only extend the reciprocating movement of the one-way axis. The radiation range of the RFID antenna is limited, and the reciprocating mechanism requires a large space to meet the travel of the mechanism, resulting in the volume of the RFID antenna module increased etc.

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