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Intelligent card checking and reading method and device for OBU

A technology of intelligent card reading and card reading, which is applied in the field of intelligent transportation, can solve the problems of aging and failure of mechanical toggle switches, and achieve the effect of reducing the risk of failure

Active Publication Date: 2020-02-21
BEIJING WATCH DATA SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the longer the OBU is used, the risk of aging and failure of the mechanical toggle switch

Method used

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  • Intelligent card checking and reading method and device for OBU
  • Intelligent card checking and reading method and device for OBU
  • Intelligent card checking and reading method and device for OBU

Examples

Experimental program
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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] figure 1 For OBU's smart card reading process, figure 2 It is a schematic structural diagram of the smart card reader device of the OBU.

[0028] Such as figure 2 As shown, the smart card reading device of the OBU is composed of a non-contact card reading module 100, an external oscillator 1101, an MCU 150, and peripheral components not shown. MCU 150 and peripheral components not shown constitute an OBU controller.

[0029] The contactless card reading module 100 includes an internal oscillator 1102 , a low power consumption timer 120 , a detection module 140 , an interrupt module 160 and a calibration module 180 .

[0030] The external oscillator 1101 is used to provide a clock for the contactless card reading module 100 to ensure its normal operation.

[0031] The internal oscillator 1102 generates an oscillation signal of a certain f...

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PUM

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Abstract

The invention provides an intelligent card checking and reading method and an intelligent card checking and reading device for an OBU. The intelligent card checking and reading method comprises the steps of: setting an RSSI wake-up threshold value without card insertion; extracting RSSI from an initial signal, quantizing the RSSI in real time, detecting an RSSI quantized value, comparing the current RSSI value with the wake-up threshold value, and sending an interrupt signal when the RSSI value is lower than the wake-up threshold value; and starting card operation and other operations after anMCU is awakened. By applying the intelligent card checking and reading method and the intelligent card checking and reading device, the risk of aging failure of a mechanical switch when a user IC card is inserted is avoided, the cost of the mechanical toggle switch is saved, and the service life of the OBU is prolonged.

Description

technical field [0001] The invention relates to the field of intelligent transportation, in particular to a method and device for intelligent card detection and card reading of an OBU. Background technique [0002] ETC is the abbreviation of electronic non-stop charging system. Its main function is to use the computer through the special short-range communication DSRC between the on-board electronic label OBU installed on the vehicle windshield and the roadside unit RSU antenna on the ETC lane of the toll station. The network technology and the bank carry out background settlement processing, so as to achieve the purpose of paying road and bridge tolls without stopping when vehicles pass through the road and bridge toll stations. [0003] There are currently two types of ETC user cards, one is a debit card and the other is a stored value card. When the card is inserted into the OBU for use, the OBU will display the card type, and if it is a stored-value card, it will also d...

Claims

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Application Information

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IPC IPC(8): G07B15/06G06K7/08
CPCG06K7/082G07B15/063
Inventor 任俊杰
Owner BEIJING WATCH DATA SYST
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