CN111325863A - Method, device and equipment for rapidly waking up vehicle-mounted unit - Google Patents
Method, device and equipment for rapidly waking up vehicle-mounted unit Download PDFInfo
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- CN111325863A CN111325863A CN202010226872.5A CN202010226872A CN111325863A CN 111325863 A CN111325863 A CN 111325863A CN 202010226872 A CN202010226872 A CN 202010226872A CN 111325863 A CN111325863 A CN 111325863A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
- G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
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Abstract
The embodiment of the invention discloses a method, a device and equipment for rapidly awakening a vehicle-mounted unit, which relate to the field of electronic toll collection and comprise the following steps: when the vehicle-mounted unit is in a dormant state, starting a radio frequency awakening module of the vehicle-mounted unit; when the first 14KHz square wave and the beacon service table are received, the quantity of the received 14KHz square waves is accumulated; and if the number of the cumulatively received 14KHz square waves in the preset awakening detection time reaches a preset number threshold, awakening the vehicle-mounted unit. The invention can ensure that the OBU can make VST response after receiving the first wake-up signal (14KHz square wave) and the BST data frame issued by the RSU on the premise that the RSU signal of the lane is stronger than that of the adjacent lane, and quickly and accurately establish the ETC communication link, thereby realizing zero wake-up and having important significance for saving transaction time and preventing adjacent lane interference.
Description
Technical Field
The embodiment of the invention relates to the field of electronic toll collection, in particular to a method, a device and equipment for rapidly waking up a vehicle-mounted unit.
Background
Electronic Toll Collection (ETC) is more and more mature in use at entrances and exits of expressway Toll stations in various regions, a small number of manual Toll windows are reserved subsequently, the distribution of Road Side Units (RSUs) is more and more complex, and wake-up signals sent by the RSUs received by On-Board units (OBUs) are also complex and diversified.
At present, a lane RSU comprises a barrier gate system, the passing speed of a vehicle is only 30 km/h on average, and congestion is easy to occur when the traffic flow is large on holidays. For a traffic scene that a plurality of adjacent ETC lanes are arranged at a toll gate, an OBU is easily awakened by the RSU of the adjacent lane by mistake to establish an ETC communication link, so that the RSU signal of the lane is shielded and is not accessed, and the adjacent lane lifts the rod without lifting the rod, so that adjacent lane transaction occurs, and great trouble is caused to a vehicle owner and toll station staff.
Disclosure of Invention
The embodiment of the invention aims to provide a method, a device and equipment for rapidly awakening a vehicle-mounted unit, which are used for solving the problem that the conventional OBU is mistakenly awakened by an adjacent road RSU.
In order to achieve the above object, the embodiments of the present invention mainly provide the following technical solutions:
in a first aspect, an embodiment of the present invention provides a method for quickly waking up a vehicle-mounted unit, including: when the vehicle-mounted unit is in a dormant state, starting a radio frequency awakening module of the vehicle-mounted unit; when a first 14KHz square wave and a Beacon Service Table (BST) are received, accumulating the number of the received 14KHz square waves; and if the number of the cumulatively received 14KHz square waves in the preset awakening detection time reaches a preset number threshold, awakening the vehicle-mounted unit.
According to an embodiment of the invention, the preset number threshold is 14.
According to one embodiment of the invention, waking up the on-board unit comprises: the radio frequency awakening module outputs awakening interruption to a control module of the vehicle-mounted unit; the control module responds to the wake-up interrupt and enables the chip; reading the beacon service table, decoding and storing in a memory; a Vehicle Service Table (VST) is sent to the roadside unit.
According to an embodiment of the present invention, after the accumulation of the number of received 14KHz square waves is started, the method further comprises: and if the quantity of the cumulatively received 14KHz square waves in the preset awakening detection time is less than the preset quantity threshold value, keeping the vehicle-mounted unit in a dormant state.
In a second aspect, an embodiment of the present invention further provides a device for quickly waking up an on-board unit, including: the communication module is used for receiving signals sent by the road side unit when the vehicle-mounted unit is in sleep; and the awakening control module is connected with the communication module and used for accumulating the number of the received 14KHz square waves when the first 14KHz square waves and the beacon service table are received, and awakening the vehicle-mounted unit if the number of the accumulated 14KHz square waves reaches a preset number threshold value within preset awakening detection time.
According to an embodiment of the invention, the preset number threshold is 14.
According to one embodiment of the present invention, the wake-up control module is configured to output a wake-up interrupt to a control module of the on-board unit; the control module is used for responding to the awakening interrupt and enabling a chip; the control module is used for reading the beacon service table, decoding the beacon service table, storing the decoded beacon service table in a memory of the vehicle-mounted unit, and sending the vehicle service table to the road side unit through a communication module of the vehicle-mounted unit.
According to an embodiment of the present invention, after the wake-up control module is configured to receive the number of the 14KHz square waves, if the number of the cumulatively received 14KHz square waves in the preset wake-up detection time is smaller than the preset number threshold, the on-board unit is kept dormant.
In a third aspect, an embodiment of the present invention further provides an electronic device, including: at least one processor and at least one memory; the memory is to store one or more program instructions; the processor is configured to execute one or more program instructions to perform the method for rapidly waking up the on-board unit according to the first aspect.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium containing one or more program instructions for being executed to perform the method for quickly waking up an on-board unit according to the first aspect.
The technical scheme provided by the embodiment of the invention at least has the following advantages:
according to the method, the device and the equipment for rapidly waking up the vehicle-mounted unit, the wake-up detection time is changed by configuring the relevant register, the wake-up interrupt is rapidly generated, and meanwhile, the internal enable clock starts a chip to receive. After delivery regulation and measurement, on the premise of ensuring that the RSU signal of the lane is stronger than that of an adjacent lane, the OBU can make VST response after receiving a first wake-up signal (14KHz square wave) + BST data frame issued by the RSU, and quickly and accurately establish an ETC communication link, so that zero wake-up is realized, and the method has important significance for saving transaction time and preventing adjacent lane interference.
Drawings
Fig. 1 is a flowchart of a method for rapidly waking up a vehicle-mounted unit according to an embodiment of the present invention.
Fig. 2 is a block diagram of a device for rapidly waking up a vehicle-mounted unit according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, interfaces, techniques, etc. in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In the description of the present invention, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as meaning directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 is a flowchart of a method for rapidly waking up a vehicle-mounted unit according to an embodiment of the present invention. As shown in fig. 1, a method for rapidly waking up a vehicle-mounted unit according to an embodiment of the present invention includes:
s1: and when the vehicle-mounted unit is in a dormant state, starting a radio frequency awakening module of the vehicle-mounted unit.
Specifically, after the vehicle enters the entrance of the highway, the OBU on the vehicle is written into the entrance information of the highway by the RSU at the entrance. Then, as the vehicle runs in the highway, before the OBU is not activated by the awakening model sent by the RSU within a period of time, the OBU is in a dormant state, so that the energy consumption of the OBU can be reduced. When the OBU is in a sleep state, modules such as a control module (e.g., a Micro Controller Unit (MCU)) of the OBU, a storage module, and an anti-detachment module are in a sleep state, and the rf wakeup module is turned on. The radio frequency wake-up module is used for receiving wake-up signals issued by the RSU through 5.8G signals, namely 14KHz square waves are modulated on 5.8GHz carriers in an OOK mode.
S2: upon receipt of the first 14KHz square wave and the BST signal, the number of received 14KHz square waves begins to be accumulated.
Specifically, when the vehicle is ready for ETC charging, the RSU of the lane in which the vehicle is located sends a wake-up signal and a BST signal to the OBU. The OBU starts to accumulate the number of the received 14KHz square waves after receiving the first 14KHz square wave and BST signal transmitted by the RSU of the lane.
S3: and if the quantity of the cumulatively received 14KHz square waves in the preset awakening detection time reaches a preset quantity threshold value, awakening the OBU.
Specifically, the preset wake-up detection time is N times of the wake-up signal period. And N is an integer and can be configured through corresponding parameters in a register, and the larger N is, the more accurate the awakening is, but the longer the required time is. When N is 1, i.e. the wake-up detection time is equal to the wake-up signal period, the completed wake-up signal may not be accurately detected within the wake-up detection time. Preferably, N is 2 or 3. The OBU can output the wake-up interrupt after the wake-up detection is successful.
In an embodiment of the present invention, the preset number threshold is 14, that is, when the rf wake-up signal detects 14KHz square waves, it is determined that the RSU wake-up signal is received, and at this time, the OBU is woken up to perform ETC charging.
In one embodiment of the present invention, the process of waking up the OBU includes: the radio frequency wake-up module outputs a wake-up interrupt to a control module of the OBU and enables the interior to establish a clock; the control module responds to the wake-up interrupt and enables the chip; the SPI reads BST and stores the decoded BST in a memory; a Vehicle Service Table (VST) is sent to the RSU.
In an embodiment of the present invention, after step S2, the method further includes: and if the quantity of the accumulated received 14KHz square waves in the preset awakening detection time is less than a preset quantity threshold value, which indicates that the OBU does not receive a correct and complete awakening signal, keeping the OBU in dormancy and enabling the radio frequency awakening module to enter the dormancy mode again.
According to the method for rapidly waking up the vehicle-mounted unit, the wake-up detection time is changed by configuring the relevant register, the wake-up interrupt is rapidly generated, and meanwhile the internal enable clock starts a chip to receive. After delivery regulation and measurement, on the premise of ensuring that the RSU signal of the lane is stronger than that of an adjacent lane, the OBU can make VST response after receiving a first wake-up signal (14KHz square wave) + BST data frame issued by the RSU, and quickly and accurately establish an ETC communication link, so that zero wake-up is realized, and the method has important significance for saving transaction time and preventing adjacent lane interference.
Fig. 2 is a block diagram of a device for rapidly waking up a vehicle-mounted unit according to an embodiment of the present invention. As shown in fig. 2, the apparatus for rapidly waking up a vehicle-mounted unit according to an embodiment of the present invention includes: a communication module 100 and a wake-up control module 200.
The communication module 100 is configured to receive a signal sent by the roadside unit when the on-board unit is sleeping; the wake-up control module 200 is connected to the communication module 100, and configured to start accumulating the number of received 14KHz square waves when receiving the first 14KHz square wave and the beacon service table, and wake up the vehicle-mounted unit if the number of the accumulated received 14KHz square waves reaches a preset number threshold within a preset wake-up detection time.
In one embodiment of the present invention, the predetermined number threshold is 14.
In one embodiment of the present invention, the wake-up control module 200 is configured to output a wake-up interrupt to a control module of the on-board unit and internally enable the setup clock; the control module is used for responding to the awakening interrupt and enabling the chip; the control module is used for reading the beacon service table, decoding the beacon service table, storing the decoded beacon service table in a memory of the vehicle-mounted unit, and transmitting the vehicle service table to the road side unit through a communication module of the vehicle-mounted unit.
In an embodiment of the present invention, the wake-up control module 200 is configured to keep the vehicle-mounted unit in sleep if the number of the received 14KHz square waves accumulated within the preset wake-up detection time is less than a preset number threshold after the number of the received 14KHz square waves.
It should be noted that, a specific implementation manner of the apparatus for rapidly waking up a vehicle-mounted unit in the embodiment of the present invention is similar to a specific implementation manner of the method for rapidly waking up a vehicle-mounted unit in the embodiment of the present invention, and specific reference is specifically made to the description of the method portion for rapidly waking up a vehicle-mounted unit, and details are not repeated for reducing redundancy.
In addition, other configurations and functions of the device for rapidly waking up the on-board unit according to the embodiment of the present invention are known to those skilled in the art, and are not described in detail for reducing redundancy.
An embodiment of the present invention further provides an electronic device, including: at least one processor and at least one memory; the memory is to store one or more program instructions; the processor is configured to execute one or more program instructions to perform the method for rapidly waking up the on-board unit as described above.
The disclosed embodiments provide a computer-readable storage medium having stored therein computer program instructions that, when run on a computer, cause the computer to perform the above-described method of rapidly waking up an on-board unit.
In an embodiment of the invention, the processor may be an integrated circuit chip having signal processing capability. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, discrete hardware component.
The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The processor reads the information in the storage medium and completes the steps of the method in combination with the hardware.
The storage medium may be a memory, for example, which may be volatile memory or nonvolatile memory, or which may include both volatile and nonvolatile memory.
The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory.
The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (ddr Data Rate SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), synclink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM).
The storage media described in connection with the embodiments of the invention are intended to comprise, without being limited to, these and any other suitable types of memory.
Those skilled in the art will appreciate that the functionality described in the present invention may be implemented in a combination of hardware and software in one or more of the examples described above. When software is applied, the corresponding functionality may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method of quickly waking a vehicle-mounted unit, comprising:
when the vehicle-mounted unit is in a dormant state, starting a radio frequency awakening module of the vehicle-mounted unit;
when the first 14KHz square wave and the beacon service table BST are received, the number of the received 14KHz square waves is accumulated;
and if the number of the cumulatively received 14KHz square waves in the preset awakening detection time reaches a preset number threshold, awakening the vehicle-mounted unit.
2. Method for quickly waking up an on-board unit according to claim 1, characterized in that said preset number threshold is 14.
3. The method of rapidly waking up an on-board unit as recited in claim 1, wherein waking up the on-board unit comprises:
the radio frequency awakening module outputs awakening interruption to a control module of the vehicle-mounted unit;
the control module responds to the wake-up interrupt and enables the chip;
reading the beacon service table, decoding and storing in a memory;
the vehicle service table VST is sent to the road side unit.
4. The method of rapidly waking up an on-board unit as recited in claim 1, further comprising, after beginning to accumulate the number of received 14KHz square waves:
and if the quantity of the cumulatively received 14KHz square waves in the preset awakening detection time is less than the preset quantity threshold value, keeping the vehicle-mounted unit in a dormant state.
5. An apparatus for rapidly waking up an on-board unit, comprising:
the communication module is used for receiving signals sent by the road side unit when the vehicle-mounted unit is in sleep;
and the awakening control module is connected with the communication module and used for accumulating the number of the received 14KHz square waves when the first 14KHz square waves and the beacon service table are received, and awakening the vehicle-mounted unit if the number of the accumulated 14KHz square waves reaches a preset number threshold value within preset awakening detection time.
6. Device to wake up rapidly an on-board unit according to claim 5, characterised in that said preset number threshold is 14.
7. The apparatus for rapidly waking up an on-board unit as recited in claim 5, wherein the wake-up control module is configured to output a wake-up interrupt to the control module of the on-board unit; the control module is used for responding to the awakening interrupt and enabling a chip; the control module is used for reading the beacon service table, decoding the beacon service table, storing the decoded beacon service table in a memory of the vehicle-mounted unit, and sending the vehicle service table to the road side unit through a communication module of the vehicle-mounted unit.
8. The apparatus of claim 5, wherein the wake-up control module is configured to keep the on-board unit asleep if the number of cumulative 14KHz square waves received during the preset wake-up detection time is less than the preset number threshold after the number of received 14KHz square waves.
9. An electronic device, characterized in that the electronic device comprises: at least one processor and at least one memory;
the memory is to store one or more program instructions;
the processor, configured to execute one or more program instructions to perform the method of fast wake-up of a vehicle unit according to any of claims 1-4.
10. A computer readable storage medium containing one or more program instructions for performing the method of fast wake up of a on board unit as claimed in any of claims 1 to 4.
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| CN202010226872.5A CN111325863A (en) | 2020-03-27 | 2020-03-27 | Method, device and equipment for rapidly waking up vehicle-mounted unit |
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| CN202010226872.5A CN111325863A (en) | 2020-03-27 | 2020-03-27 | Method, device and equipment for rapidly waking up vehicle-mounted unit |
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| CN112203255A (en) * | 2020-09-11 | 2021-01-08 | 北京万集科技股份有限公司 | Control method and system for on-board unit, storage medium, and electronic apparatus |
| CN114373237A (en) * | 2021-12-15 | 2022-04-19 | 北京万集科技股份有限公司 | Method and device for controlling road side unit, road side unit and storage medium |
| CN114389888A (en) * | 2022-01-20 | 2022-04-22 | 高新兴物联科技有限公司 | Vehicle-mounted equipment, network awakening method and device thereof, and storage medium |
| CN115226069A (en) * | 2021-07-09 | 2022-10-21 | 广州汽车集团股份有限公司 | Method, device and equipment for reducing response waiting time of vehicle-mounted equipment and automobile |
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| CN114389888B (en) * | 2022-01-20 | 2024-03-08 | 高新兴物联科技股份有限公司 | Vehicle-mounted equipment, network awakening method and device thereof and storage medium |
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