Non-contact testing system and method for rfid tag antenna

Abstract

The invention discloses a non-contact test system and method of an RFID label antenna. The non-contact test system of the RFID label antenna comprises a display unit, a data processing and controlling unit, a radio-frequency signal transmit / receive unit, a feed mechanism unit and a test antenna unit. The data processing and controlling unit is connected with the display unit, the radio-frequency signal transmit / receive unit and the feed mechanism unit in sequence, and the test antenna unit is connected with the radio-frequency signal transmit / receive unit. Due to the fact that non-contact test is adopted, test can be carried out free of requirement of binding a chip, dissipation of the chip is reduced, and working strength of testing personnel is reduced; the fault testing rate and the leak testing rate are low; automatic testing can be achieved, and testing efficiency is high; indirect measurement to electrical property can be achieved. The non-contact test system and method of the RFID label antenna can achieve automatic test and greatly reduces demands for mechanical mechanisms, and are very suitable for large-batch production testing.

Description

technical field [0001] The invention relates to the technical field of radio frequency identification technology testing, in particular to a system and method for testing RFID tag antennas. Background technique [0002] The full name of RFID is Radio Frequency Identification (Radio Frequency Identification), which is a non-contact automatic identification technology realized by radio frequency technology. RFID tags have the characteristics of small size, fast reading and writing speed, various shapes, long service life, reusability, large storage capacity, and ability to penetrate non-conductive materials. Combining with RFID readers can realize multi-target identification and mobile target identification , Further, through the combination with Internet technology, it can also realize the tracking of items and the sharing of information on a global scale. RFID technology is used in logistics, manufacturing, public information services and other industries, which can greatly...

AI Technical Summary

Problems solved by technology

Manual visual inspection has the following disadvantages: the visual inspection method has a high work intensity for the inspectors; the eyes are prone to fatigue; the rate of false detection and missed detection is high; the inspection efficiency is low

Machine vision has the following deficiencies: it cannot measure the electrical performance; it requires high resolution of the camera, especially when the antenna line width or line spacing is small; it cannot measure the connection impedance of the stamping bridge; it is difficult to identify the overlapping parts of the aluminum foil

The measurement after bonding the chip has the following shortcomings: the loss rate of the chip is increased, because the chip price is high, and the waste caused by the bad antenna far exceeds the price of the antenna itself

Probe instrument detection has the following deficiencies: the impedance of the probe itself, the contact impedance of the probe, and the output impedance of the instrument affect the test results; for the aluminum antenna, the dense oxide layer on the surface is likely to cause poor contact of the probe; Needle positioning is difficult; it is easy to leave unsightly traces at the contact position of the probe and affect the appearance of the antenna; the high positioning requirements affect the efficiency of the test, and the cost of the precise positioning mechanism is high

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