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uwb electronic tag and its wake-up method and vehicle positioning system

An electronic label, positioning signal technology

Active Publication Date: 2019-03-05
SHENZHEN GENVICT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing UWB electronic tags use timing wake-up to enter the working state, and maintain the working state for a long time. The power consumption is large and the power consumption is fast, which not only seriously limits its service life, but also limits its popularization and application.

Method used

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  • uwb electronic tag and its wake-up method and vehicle positioning system
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  • uwb electronic tag and its wake-up method and vehicle positioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Based on the above technical principles, the present invention discloses a method for waking up a UWB electronic tag, which includes the following waking steps:

[0054] The UWB electronic tag receives the wireless signal sent by the base station of the intelligent transportation system;

[0055] After entering the communication area of ​​the base station, the vehicle equipped with UWB electronic tags receives the wireless signal sent by the base station. There are many kinds of wireless signals applied to the intelligent transportation base station. The base station is usually installed on the roadside, the entrance and exit of the parking lot, and each parking space.

[0056]The UWB electronic tag switches from a low power consumption state to a working state according to the wireless signal.

[0057] In this embodiment, wireless signals of different frequency bands can be selected. The UWB electronic tag is set with the preamble of the wireless signal frame, and can ...

Embodiment 2

[0061] Based on the above technical principles, the present invention also discloses a method for waking up a UWB electronic tag, comprising the following steps:

[0062] The UWB electronic tag receives the wireless signal sent by the base station of the intelligent transportation system; the UWB electronic tag detects the motion status signal;

[0063] The UWB electronic tag switches from a low power consumption state to a working state according to the wireless signal and the motion state signal.

[0064] In this embodiment, the UWB electronic tag not only receives the wireless signal sent by the base station, but also further determines whether it is in a scene that needs to wake up and enter the working state by detecting the movement state of the UWB electronic tag. In practical application, the vehicle equipped with UWB electronic tags is in the positioning area of ​​the base station and in the motion state. The two conditions that need to be positioned are the two condi...

Embodiment 3

[0071] Such as figure 1 and figure 2 As shown, based on the above technical principles, the present invention discloses a method for waking up a UWB electronic tag, including the following waking steps:

[0072] The UWB electronic tag receives the wireless signal sent by the base station of the intelligent transportation system;

[0073] The UWB electronic tag switches from a low power consumption state to a working state according to the wireless signal.

[0074] The specific wake-up process of this embodiment is the same as that of Embodiment 1 or 2, and will not be repeated here.

[0075] The UWB electronic tag judges whether the wireless signal satisfies the condition, and if yes, the UWB electronic tag sends a positioning signal to the base station. If not, switch the UWB electronic tag to a low power consumption state.

[0076] The UWB electronic tag judging whether the wireless signal satisfies the condition means that the UWB electronic tag judges whether the wire...

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Abstract

The invention discloses a UWB electronic label and a wake-up method thereof, and a vehicle positioning system and belongs to the intelligent traffic field. The wake-up method of the UWB electronic label comprises steps that a wireless signal sent by a base station of an intelligent traffic system is received by the UWB electronic label; the UWB electronic label is switched from a low power consumption state to a work state according to the wireless signal. According to the wake-up method, the wireless signal is employed to realize an awake-up effect, the UWB electronic label is waken up into the work state after a vehicle enters a communication area of the base station, the UWB electronic label communicates with the base station to carry out subsequent work, the UWB electronic label is prevented from being waken up in non-communication areas, so power consumption of the UWB electronic label is reduced, and service life of the UWB electronic label is prolonged.

Description

technical field [0001] The invention relates to an intelligent transportation system, in particular to a UWB electronic tag, a wake-up method thereof and a vehicle positioning system. Background technique [0002] With the increasing number of vehicles, the problem of difficult and difficult parking is becoming more and more obvious. As a result, applications such as on-street parking, parking space search, and reverse car search have emerged, all of which require wireless positioning technology. [0003] UWB (Ultra Wideband) is a carrier-free communication technology with a relative bandwidth greater than 25% and a center frequency greater than 500MHz. It uses nanosecond to picosecond non-sine wave narrow pulses to transmit data. It is used in vehicle positioning and vehicle distance testing. With many advantages such as high positioning accuracy and reliable positioning, it provides favorable conditions for the intelligent management of vehicles in parking lots, roadsides...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/123H04W4/021H04W4/44
CPCG08G1/123Y02D30/70
Inventor 王光明张建华熊江波孙占
Owner SHENZHEN GENVICT TECH
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