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Method, device and system for awakening electronic tag

A technology of electronic tags and wake-up signals, applied in the field of intelligent transportation, can solve problems such as false wake-ups, achieve the effects of preventing false wake-ups, improving anti-interference performance and service life

Inactive Publication Date: 2014-04-16
SHENZHEN GENVICT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method, device and system for waking up an electronic tag to solve the technical problem that the existing electronic tag waking mechanism easily causes false wakeup

Method used

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  • Method, device and system for awakening electronic tag
  • Method, device and system for awakening electronic tag
  • Method, device and system for awakening electronic tag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Please refer to figure 1 , an embodiment of the present invention provides a method for waking up an electronic tag, including:

[0035] 110. Generate a low-frequency signal including wake-up information, and modulate the low-frequency signal into a radio frequency signal.

[0036] 120. Transmit the radio frequency signal to the radio frequency wake-up signal receiving device, so that the radio frequency wake-up signal receiving device obtains the wake-up information through demodulation and wakes up the electronic tag when the wake-up information matches a preset information code.

[0037] In some implementations, the subject of execution of the method of the embodiment of the present invention, that is, the radio frequency signal transmitting end, may be the first electronic tag, such as the vehicle-mounted station host, and the awakened object may be the second electronic tag, such as a tamper-evident Label.

[0038]For the convenience of application, there may be ...

Embodiment 2

[0047] Please refer to figure 2 , an embodiment of the present invention provides a method for waking up an electronic tag, including:

[0048] 210. Receive a radio frequency signal emitted by a radio frequency wake-up signal generating device;

[0049] After receiving the radio frequency signal, the radio frequency signal can be filtered first to filter out the interference signal outside the working frequency band, and then the subsequent processing can be performed.

[0050] 220. Demodulate the radio frequency signal into a low frequency signal including wake-up information;

[0051] 230. Acquire the wake-up information, and compare whether the wake-up information matches a preset information code;

[0052] Wherein, the step of acquiring the wake-up information may include: amplifying and shaping the low-frequency signal; demodulating the amplified and shaped low-frequency signal, so as to obtain the wake-up information in the low-frequency signal.

[0053] 240. If they...

Embodiment 3

[0063] Please refer to image 3 , an embodiment of the present invention provides a radio frequency wake-up signal generating device. The unit includes:

[0064] a low frequency (LF) modulation wave generating unit 310, configured to generate a low frequency signal containing wake-up information;

[0065] a radio frequency (RF) signal generating unit 320, configured to generate an initial radio frequency signal;

[0066] A radio frequency modulator 330, configured to modulate the initial radio frequency signal according to the low frequency signal to obtain a radio frequency signal including wake-up information;

[0067] The radio frequency antenna 340 is used to transmit the radio frequency signal to the radio frequency wake-up signal receiving device, so that the radio frequency wake-up signal receiving device obtains the wake-up information through demodulation and wakes up when the wake-up information matches a preset information code Electronic tags.

[0068] After th...

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Abstract

The invention discloses a method for awakening an electronic tag. The method comprises the steps that low-frequency signals containing awakening information are generated, and the low-frequency signals are modulated into radio-frequency signals; the radio-frequency signals are transmitted to a radio-frequency awakening signal receiving device, so that the radio-frequency awakening signal receiving device can obtain the awakening information through demodulation and awaken the electronic tag when the awakening information is matched with a preset information code. The embodiment of the invention further provides a corresponding device and system. According to the technical scheme, the preset information code is stored in the electronic tag, a transmitting terminal modulates the low-frequency signals containing the awakening information into the radio-frequency signals and transmits the radio-frequency signals to the electronic tag, and when the awakening information is matched with the information code, the electronic tag is awaken. Accordingly, the electronic tag can be prevented from being awakened mistakenly, the interference resistance of the electronic tag is improved, and the service life of the electronic tag is prolonged.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a method, device and system for waking up an electronic tag. Background technique [0002] Intelligent Transportation System (ITS) is a transportation-oriented service system based on modern electronic information technology, and is the development direction of the future transportation system. Electronic Toll Collection (ETC) system is an important part of ITS. The ETC system is mainly composed of background system, lane controller, road side unit (Road Side Unit, RSU) equipment and on-board unit (On Board Unit, OBU) equipment, etc. OBU is also called an electronic tag, which stores vehicle identity information and attribute information. RSU and OBU use DSRC (Dedicated Short Range Communication, dedicated short-range communication) technology to communicate to realize services such as vehicle identification and electronic toll collection. [0003] The exist...

Claims

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Application Information

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IPC IPC(8): G07B15/06
Inventor 陈育成吴嘉谊肖戈
Owner SHENZHEN GENVICT TECH
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