A beam-forming forklift conformal reader antenna and a forklift using the antenna

Abstract

The invention relates to a beam forming forklift conformal reader antenna and a forklift using the beam forming forklift conformal reader antenna. The beam forming forklift conformal reader antenna comprises a top-layer rectangular metal sheet, a plurality of intermediate-layer metal sheets, a metal plate conforming to the forklift at a bottom layer, and a feed probe; the top-layer rectangular metal sheet and the metal plate are parallel to each other, and the top-layer rectangular metal sheet, the plurality of intermediate-layer metal sheets, and the metal plate surround an air cavity with one side open; a strip through hole is opened on the top the rectangular metal sheet along a longitudinal direction; and the feed probe is arranged at one end of the strip through hole. The invention fully utilizes the advantages of a metal strip through hole antenna, and takes the metal surface of a cigarette logistics forklift as a part of an antenna radiator, so that the antenna has excellent electromagnetic characteristics, and the antenna and the forklift are conformal; therefore, the problem that the antenna beam is uncontrollable and the reading range of the reader is unstable after the conventional reader antenna is mounted on the forklift is solved.

Description

Technical field[0001]The invention relates to the field of tobacco logistics RFID, in particular to a beam-shaped forklift conformal reader antenna and a forklift adopting the antenna.Background technique[0002]RFID is a radio frequency identification wireless communication technology. There is no need to establish mechanical or optical contact between the identification system and a specific target. It uses radio signals to identify specific targets and read and write related data. RFID devices are devices that use this communication technology, including RFID chips and RFID readers.[0003]The State Tobacco Monopoly Administration puts forward suggestions on the improvement of enterprise management level and process optimization and reorganization based on the application of new RFID technology, in order to help tobacco industrial and commercial enterprises to maximize their investment benefits. Since the implementation of the “No. 1 Project” system, RFID technology has gradually bee...

AI Technical Summary

Problems solved by technology

Common reader antennas radiate towards the front, but the metal plate behind the antenna and the metal arm below the antenna will affect the communication direction of the reader antenna

In addition, the plastic tray superimposed on the metal arm will also affect the antenna; through field testing, we found that the polarization direction (horizontal polarization) of the tag antenna and the polarization direction (vertical polarization) of the reader antenna do not match , which seriously affects the communication distance between the reading head and the tag, and the reading rate of the corresponding tag

[0007] In addition, in the tobacco logistics warehouse, forklifts need to frequently read location label data and pallet label data. During the movement of forklifts, they are often accompanied by severe vibrations and severe collisions.

The common reader antenna, due to its insufficient structural strength, is easy to crack and break at the welding point, resulting in an open circuit of the antenna, and often needs to replace the antenna, which is difficult to meet the practical requirements; in addition, the ordinary reader antenna shell is made of plastic material, When installed on a forklift, it is easy to be damaged after a violent collision, which increases the operation and maintenance cost

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