Electronic tag awakening sensitivity calibrating method and system

Abstract

The invention discloses an electronic tag awakening sensitivity calibrating method and system. The method comprises the following steps: a background testing platform sends an awakening signal to an electronic tag; when the electronic tag is awakened, the background testing platform judges if a difference value between the present awakening power of the awakening signal and the predetermined awakening power is in a predetermined sensitivity range; when the difference value is beyond the predetermined sensitivity range, the background testing platform corrects an awakening sensitivity calibrating parameter, and writes the corrected awakening sensitivity calibrating parameter in the electronic tag; the electronic tag allocates a radio frequency chip according to the corrected awakening sensitivity calibrating parameter, and returns to the step that the background testing platform sends the awakening signal to the electronic tag. The electronic tag awakening sensitivity calibrating method and system effectively guarantee the consistency of the radio frequency chip and the awakening sensitivity of the electronic tag, and avoids the condition that the electronic tag cannot be awakened in the OBU transaction range or is awakened in the non-traction area, so that the consistency demand of actual transaction areas is satisfied.

Description

technical field [0001] The invention relates to the technical field of electronic tag identification, in particular to a method and system for calibrating wake-up sensitivity of electronic tags. Background technique [0002] Electronic Toll Collection (ETC, Electronic Toll Collection) system uses the automatic vehicle identification technology to complete the wireless data communication between the vehicle and the toll station, to exchange the automatic vehicle identification and toll data, and to process the toll data through the computer network, so as to realize the Fully electronic charging system for parking charges. On-Board Unit (OBU, On Board Unit), also known as electronic tags and on-board equipment, is a mobile identification device with microwave communication function and information storage function. It is installed inside the vehicle and supports the use of dedicated short-range communication and roadside units. To exchange information. [0003] In the ETC a...

AI Technical Summary

Problems solved by technology

[0006] The current OBU wake-up circuit is integrated into the RF chip. Due to the individual differences of the RF chip, the consistency of the wake-up sensitivity of the RF chip will be different. This will cause the OBU transaction range to fail to meet the actual application scenario, and it also exists in the non-trading area. The situation of being awakened to the transaction

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