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High wake-up sensitivity card, obu, obu component and communication method

A technology of sensitivity card and wake-up signal, applied in the field of intelligent transportation, can solve the problems of OBU unable to wake up, unable to wake up OBU, vehicles unable to pass through ETC lanes normally, etc., so as to improve the success rate and ensure the success of ETC transactions.

Active Publication Date: 2017-06-16
SHENZHEN GENVICT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of a metal insulation layer with a large microwave attenuation will cause the OBU to fail to wake up to complete the communication transaction with the RSU, so that the vehicle cannot pass the ETC lane normally
[0004] In addition, due to the improvement of product integration, products are generally mass-produced with uniform specifications, and users will coat different types of metal heat insulation layers on the windshield according to different needs. The general OBU can meet the wake-up signal passing through with a small attenuation. After the metal insulation layer, the OBU can still be woken up to complete the communication transaction, but for the metal insulation layer with a large attenuation, the OBU may not be able to wake up

Method used

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  • High wake-up sensitivity card, obu, obu component and communication method
  • High wake-up sensitivity card, obu, obu component and communication method
  • High wake-up sensitivity card, obu, obu component and communication method

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Experimental program
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Effect test

Embodiment 1

[0027] Please refer to figure 1 , this embodiment is mainly applicable to the situation where the microwave attenuation is relatively large. The OBU assembly of this embodiment mainly includes an OBU101 and a high wake-up sensitivity card 102 used in conjunction with the OBU101, wherein the OBU101 mainly includes a connected antenna 1011, a main control module 1012 and The main interface circuit 1013 , while the high wake-up sensitivity card 102 mainly includes a detection control circuit 1021 and a card interface circuit 1022 connected.

[0028] Antenna 1011 is a device for transmitting or receiving electromagnetic waves;

[0029] The main control module 1012 is used to send a configuration signal to the connected high wake-up sensitivity card 102 before the OBU 101 wakes up, and after the high wake-up sensitivity card 102 completes the configuration of the processing signal according to the configuration signal, control the transmission of the initial signal received from th...

Embodiment 2

[0042] Please refer to image 3 The difference between the OBU assembly of this embodiment and the first embodiment is that the high wake-up sensitivity card 102 also includes: a transmitting amplifier circuit 1023, which is connected to the card interface circuit 1022, and is used to pass through the card interface circuit 1022 after the OBU 101 is woken up. The service signal to be sent received from the OBU101 is amplified and returned to the OBU101 for transmission. The OBU 101 also includes a first receiving branch 1014, a transceiver processing module 1015, a first transmitting branch 1016, and a radio frequency switch 1017. The first receiving branch 1014 is connected to the antenna 1011, the main interface circuit 1013 and the main control module 1012 respectively. The module 1015 is connected to the main control module 1012 , the first transmitting branch 1016 is respectively connected to the antenna 1011 , the main interface circuit 1013 and the transceiver processin...

Embodiment 3

[0046] Please refer to Figure 4 The difference between the OBU component of this embodiment and the second embodiment is that the OBU 101 also includes a second receiving branch 1018 and a second transmitting branch 1019, wherein the second receiving branch 1018 is connected to the antenna 1011 and the transceiver processing module 1015 respectively , the second transmitting branch 1019 is connected to the antenna 1011 and the transceiver processing module 1015 respectively.

[0047] When the main control module 1012 detects that the high wake-up sensitivity card 102 is not connected, after the OBU 101 is woken up, it controls the radio frequency switch 1017 to select the second transmission branch 1019 to transmit the service signal to be sent obtained from the transceiver processing module 1015 to the antenna 1011 Send, and gate the second receiving branch 1018 to transmit the service receiving signal received from the antenna 1011 to the transceiver processing module 1015;...

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Abstract

The application discloses a high wake-up sensitivity card, OBU, OBU components and a communication method. Before the OBU wakes up, after the high wake-up sensitivity card is connected to the OBU, the high wake-up sensitivity card extracts the signal to be detected from the initial signal received by the OBU and Amplify it to make it meet the requirements of wake-up signal validity detection, then perform wake-up signal validity detection on the signal to be detected after the amplification process, and return an interrupt signal to the OBU after detecting that the signal to be detected is a valid wake-up signal In order to wake up the OBU, in this way, the amplified signal to be detected is sufficient for validity detection, so that when the signal to be detected is an effective wakeup signal, the OBU is triggered to wake up, which greatly improves the success rate of OBU wakeup and ensures the success of ETC transactions.

Description

technical field [0001] The present application relates to the field of intelligent transportation, in particular to a high wake-up sensitivity card, OBU, OBU components and a communication method. Background technique [0002] Electronic Toll Collection (ETC) is a charging technology that does not require parking to pay to pass through toll booths. The vehicle completes the charging process by installing the on-board unit (On-Board Unit, OBU) and the road-side unit (Road-Side Unit, RSU) to communicate. OBU stores its identification information, vehicle information (such as license plate number, model, etc.), and can read card information. The RSU is generally installed on the gantry at the front end of the toll station lane. It first sends a wake-up signal to the OBU. After the OBU wakes up, it communicates with the RSU wirelessly. The RSU obtains the card information from the OBU and sends it to the billing subsystem. Corresponding deduction processing. [0003] With the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K17/00G06K19/07G07B15/06
Inventor 王仁发杨成向涛
Owner SHENZHEN GENVICT TECH