CN116233788A

CN116233788A - Data transmission method, terminal device, system and readable storage medium

Info

Publication number: CN116233788A
Application number: CN202211678339.8A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Shenzhen Chenggu Technology Co ltd
Current assignee: Shenzhen Chenggu Technology Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-06-06

Abstract

The application is applicable to the technical field of intelligent transportation, and provides a data transmission method, terminal equipment, a system and a readable storage medium. The data transmission system comprises a vehicle-mounted unit and a road side unit; the road side unit is used for acquiring a first BST message, sequentially sending a wake-up signal and the first BST message to the vehicle-mounted unit, wherein the first BST message sequentially carries the event priority and the event information of the road event; the vehicle-mounted unit is used for responding to the wake-up signal sent by the road side unit, receiving the first BST message, analyzing the first BST message in the process of receiving the first BST message, and controlling a processing module of the vehicle-mounted unit to keep a dormant state when the current electric quantity of the vehicle-mounted unit and the event priority obtained through analysis meet the dormant condition, wherein the processing module is used for analyzing the event information in the first BST message. The embodiment of the application can reduce the power consumption of the vehicle-mounted unit.

Description

Data transmission method, terminal device, system and readable storage medium

Technical Field

The application belongs to the technical field of intelligent transportation, and particularly relates to a data transmission method, terminal equipment, a system and a readable storage medium.

Background

With the development of economy, the use of automobiles is becoming more and more common, and more frequent road accidents, especially in expressway scenes, are caused, and the running speed of the automobiles is higher, so that once the accidents happen, the automobiles on the whole road section can be influenced, and the travel plans of drivers are further influenced. In the related art, a Road Side Unit is often deployed On an expressway, and a beacon service table (Beacon Service Table, BST) with Road event information is transmitted to an On-Board Unit (OBU) through the Road Side Unit (RSU), so that a driver is notified. However, when the road event information is informed to the driver through the communication mode of the RSU and the OBU, the OBU is required to be awakened and then analyze the BST information sent by the RSU, and when the road event information is too much, the OBU is frequently awakened and analyzes the BST information, so that the power consumption of the OBU is higher, and the service life of the OBU is easy to reduce.

Disclosure of Invention

The embodiment of the application provides a data transmission method, a data transmission device, a data transmission terminal, a data transmission system and a data transmission system, and a readable storage medium, which can solve the problem of higher power consumption of a vehicle-mounted unit in the related technology.

An embodiment of the present application provides a data transmission method, applied to a vehicle-mounted unit, where the data transmission method includes: receiving a first BST message sent by a road side unit in response to a wake-up signal sent by the road side unit, wherein the first BST message sequentially carries event priority and event information of a road event; and in the process of receiving the first BST message, analyzing the first BST message, and controlling a processing module of the vehicle-mounted unit to keep a dormant state when the current electric quantity of the vehicle-mounted unit and the analyzed event priority meet a dormant condition, wherein the processing module is used for analyzing the event information in the first BST message.

A second aspect of the embodiments of the present application provides a data transmission method, applied to a roadside unit, where the data transmission method includes: acquiring a first BST message, wherein the first BST message sequentially carries the event priority and event information of a road event; and sequentially sending a wake-up signal and a first BST message to the vehicle-mounted unit, so that the vehicle-mounted unit receives the first BST message after receiving the wake-up signal, and analyzing the first BST message in the process of the first BST message, so as to control a processing module of the vehicle-mounted unit to keep a dormant state when the current electric quantity of the vehicle-mounted unit and the event priority obtained by analysis meet the dormant condition, wherein the processing module is used for analyzing the event information in the first BST message.

A third aspect of the embodiments of the present application provides a data transmission method, applied to a target roadside intelligent station, where the data transmission method includes: acquiring event priority and event information of a road event; and sending a second BST message to a road side unit, wherein the second BST message carries event priority and event information of a road event, the second BST message is used for enabling the road side unit to encode to obtain a first BST message, so that the vehicle-mounted unit receives the first BST message sent by the road side unit after receiving a wake-up signal sent by the road side unit, and analyzes the first BST message in the process of the first BST message, so that when the current electric quantity of the vehicle-mounted unit and the event priority obtained by analysis meet a dormancy condition, a processing module of the vehicle-mounted unit is controlled to keep a dormancy state, and the processing module is used for analyzing the event information in the first BST message.

A fourth aspect of the present application provides a data transmission method, applied to a central system device, where the data transmission method includes: acquiring event information and event priority of road events uploaded by each road side intelligent station; the method comprises the steps that event information and event priority are sent to target intelligent stations in all intelligent stations of a road side, the target intelligent stations of the road side generate second BST information according to the event information and the event priority, the second BST information is used for enabling a road side unit to encode to obtain first BST information, the vehicle-mounted unit receives the first BST information sent by the road side unit after receiving a wake-up signal sent by the road side unit, and in the process of the first BST information, the first BST information is analyzed, so that when the current electric quantity of the vehicle-mounted unit and the event priority obtained through analysis meet dormancy conditions, a processing module of the vehicle-mounted unit is controlled to keep a dormancy state, and the processing module is used for analyzing the event information in the first BST information.

A data transmission device provided in a fifth aspect of the present application is configured in a vehicle-mounted unit, and the data transmission device includes: the message receiving unit is used for responding to the wake-up signal sent by the road side unit and receiving a first BST message sent by the road side unit, wherein the first BST message sequentially carries the event priority and the event information of the road event; the data processing unit is used for analyzing the first BST message in the process of receiving the first BST message, and controlling a processing module of the vehicle-mounted unit to keep a dormant state when the current electric quantity of the vehicle-mounted unit and the event priority obtained through analysis meet the dormant condition, wherein the processing module is used for analyzing the event information in the first BST message.

A data transmission device provided in a sixth aspect of the present application is configured in a roadside unit, where the data transmission device includes: the first acquisition unit is used for acquiring a first BST message which sequentially carries the event priority and the event information of the road event; the first transmission unit is used for sequentially sending a wake-up signal and a first BST message to the vehicle-mounted unit, so that the vehicle-mounted unit receives the first BST message after receiving the wake-up signal, analyzes the first BST message in the process of the first BST message, and controls a processing module of the vehicle-mounted unit to keep a dormant state when the current electric quantity of the vehicle-mounted unit and the event priority obtained through analysis meet the dormant condition, wherein the processing module is used for analyzing the event information in the first BST message.

A data transmission device provided in a seventh aspect of the present application is configured in a target roadside intelligent station, where the data transmission device includes: the second acquisition unit is used for acquiring the event priority and the event information of the road event; the second transmission unit is configured to send a second BST message to a road side unit, where the second BST message carries an event priority and event information of a road event, the second BST message is configured to enable the road side unit to encode to obtain a first BST message, so that the vehicle-mounted unit receives the first BST message sent by the road side unit after receiving a wake-up signal sent by the road side unit, and analyzes the first BST message in the process of the first BST message, so that when a current electric quantity of the vehicle-mounted unit and the event priority obtained by analysis meet a sleep condition, a processing module of the vehicle-mounted unit is controlled to keep a sleep state, and the processing module is configured to analyze the event information in the first BST message. .

An eighth aspect of the present application provides a data transmission device configured in a central system device, where the data transmission device includes: the third acquisition unit is used for acquiring event information and event priority of the road event uploaded by each road side intelligent station; the transmission unit is used for transmitting the event information and the event priority to a target intelligent station in each intelligent station, the target intelligent station generates a second BST message according to the event information and the event priority, the second BST message is used for enabling the intelligent station to obtain a first BST message through encoding, the vehicle-mounted unit receives the first BST message transmitted by the intelligent station after receiving a wake-up signal transmitted by the intelligent station, and analyzes the first BST message in the process of the first BST message, so that when the current electric quantity of the vehicle-mounted unit and the event priority obtained through analysis meet a dormancy condition, a processing module of the vehicle-mounted unit is controlled to keep a dormancy state, and the processing module is used for analyzing the event information in the first BST message.

A ninth aspect of the embodiments of the present application provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the data transmission method described above when executing the computer program.

A tenth aspect of the embodiments of the present application provides a data transmission system, including a vehicle-mounted unit and a roadside unit; the road side unit is used for acquiring a first BST message, and sequentially sending a wake-up signal and the first BST message to the vehicle-mounted unit, wherein the first BST message sequentially carries the event priority and the event information of a road event; the vehicle-mounted unit is used for responding to a wake-up signal sent by the road side unit, receiving the first BST message, analyzing the first BST message in the process of receiving the first BST message, and controlling a processing module of the vehicle-mounted unit to keep a dormant state when the current electric quantity of the vehicle-mounted unit and the event priority obtained through analysis meet the dormant condition, wherein the processing module is used for analyzing the event information in the first BST message.

An eleventh aspect of the embodiments of the present application provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the data transmission method described above.

A twelfth aspect of the embodiments of the present application provides a computer program product for causing a terminal device to execute the above data transmission method when the computer program product is run on the terminal device

In the embodiment of the application, the on-board unit receives the first BST message sent by the road side unit in response to the wake-up signal sent by the road side unit, analyzes the first BST message in the process of receiving the first BST message, and controls the processing module of the on-board unit to keep the dormant state when the current electric quantity of the on-board unit and the event priority of the road event obtained by analysis meet the dormant condition, wherein the processing module is used for analyzing the event information in the BST message, that is, the processing module can be controlled to dormant by referring to the current electric quantity of the on-board unit and the event priority of the road event, and further analysis and processing of the event information in part of the first BST message can be stopped, so that the power consumption of the on-board unit can be reduced to a certain extent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a data transmission system according to an embodiment of the present application;

fig. 2 is a schematic diagram of a specific structure of a data transmission system according to an embodiment of the present application;

fig. 3 is a schematic flowchart of a first implementation of a data transmission method according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a central system device according to an embodiment of the present application;

fig. 5 is a schematic flow chart of a second implementation of the data transmission method provided in the embodiment of the present application;

fig. 6 is a schematic structural diagram of a roadside intelligent station provided in an embodiment of the present application;

fig. 7 is a schematic flow chart of a third implementation of the data transmission method provided in the embodiment of the present application;

fig. 8 is a schematic structural diagram of a road side unit according to an embodiment of the present disclosure;

fig. 9 is a schematic flowchart of a fourth implementation of the data transmission method provided in the embodiment of the present application;

fig. 10 is a schematic structural diagram of an on-board unit provided in an embodiment of the present application;

fig. 11 is a schematic first structural diagram of a data transmission device according to an embodiment of the present application;

fig. 12 is a second schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 13 is a third schematic structural diagram of a data transmission device according to an embodiment of the present application;

Fig. 14 is a fourth schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a terminal device provided in an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be protected herein.

When the road event information is informed to the driver through the communication mode of the RSU and the OBU, the OBU is required to be awakened and then the BST message sent by the RSU is required to be analyzed. When the road event information is too much, the OBU is frequently awakened and analyzes the BST information, so that the power consumption of the OBU is higher, and the service life of the OBU is easy to reduce. Based on the above, the application provides a data communication method, which can reduce the power consumption required by the OBU when sending the BST message with the event information to the OBU through the RSU, thereby prolonging the service life of the OBU.

In order to illustrate the technical solution of the present application, the following description is made by specific examples.

Fig. 1 shows a data transmission system provided in an embodiment of the present application, where the data transmission system may include a vehicle-mounted unit and a road side unit, and may be suitable for a situation where power consumption of the vehicle-mounted unit needs to be reduced.

The road side units can be deployed on two sides of the portal frame and the road, support communication with the vehicle-mounted units, and provide ETC electronic charging and various expansion services. The communication between the road side unit and the vehicle-mounted unit may include extended service wireless link communication, ETC dedicated short range communication, and/or communication of other protocols.

In the embodiment of the present application, the roadside unit may be configured to acquire the first BST message, and sequentially send a wake-up signal and the first BST message to the on-board unit. The first BST message may in turn carry event priority and event information for the road event.

In particular, the road event may include, but is not limited to: severe road weather, road construction, road accidents, etc., event information including, but not limited to, event type of road event, event location, etc. The event priority is used to characterize the importance of a road event, and can be related to the emergency degree of the road event itself and the distance between the event location and the location of the road side unit. Specifically, the event priority is positively correlated to the degree of urgency and negatively correlated to the distance between the event location and the location of the roadside unit. That is, the higher the degree of urgency of the road event itself, or the closer the event location is to the location of the roadside unit, the higher the event priority.

The vehicle-mounted unit can be deployed on the vehicle in a front loading or rear loading mode, can be communicated with the road side unit in a mode of expanding service wireless link communication, ETC special short-range communication and the like, and provides safety assistance, information service, efficiency support, electronic charging and other services for the vehicle.

In the embodiment of the application, the on-board unit may receive the first BST message in response to the wake-up signal sent by the road side unit, and analyze the first BST message in the process of receiving the first BST message, so as to control the processing module of the on-board unit to maintain the sleep state when the current electric quantity of the on-board unit and the event priority obtained by analysis meet the sleep condition.

Specifically, the vehicle-mounted unit may include a receiving module and a processing module, and because the first BST message may sequentially carry an event priority and event information of a road event, the receiving module may receive a wake-up signal and the first BST message, and analyze preferentially to obtain the event priority carried in the first BST message, and based on the event priority, may detect whether the current electric quantity of the vehicle-mounted unit and the event priority obtained by analysis satisfy a sleep condition.

If the sleep condition is satisfied, the on-board unit may control the processing module to maintain the sleep state. The processing module may be configured to parse the event information in the first BST message, for example, may refer to a micro control unit (Microcontroller Uni, MCU) of the on-board unit. Because the processing module keeps the sleep state, the on-board unit can stop receiving the first BST message, and the processing module does not analyze and process the event information in the first BST message.

More specifically, as shown in fig. 2, the data transmission System may further include a roadside intelligent station (Roadside intelligent station, RIS)/(Roadside Facilities, RSF) and a Center System device (CS).

The central system equipment is computing equipment deployed in the road segment center, and can be used for receiving event information and event priority of road events uploaded by each road side intelligent station and sending the event information and the event priority to a target road side intelligent station in each road side intelligent station. The target intelligent road side station is any one of intelligent road side stations managed by the central system equipment.

The road side intelligent stations can be deployed on the two sides of the portal, the toll station and the road to support the detection and generation of road events. A single roadside intelligent station may be connected to one or more roadside units. The target intelligent station on the road side can be used for sending a second BST message to the road side unit, wherein the second BST message carries the event priority and the event information of the road event.

Correspondingly, the roadside unit may be specifically configured to receive the second BST message sent by the target roadside intelligent station, and encode the event priority and the event information in the second BST message to obtain the first BST message. The first BST message is then sent to the on-board unit. Furthermore, the on-board unit may parse the first BST message during receiving the first BST message, so as to control the processing module of the on-board unit to maintain the sleep state when the current electric quantity of the on-board unit and the event priority obtained by parsing satisfy the sleep condition.

Specifically, fig. 3 shows a schematic implementation flow chart of a data transmission method provided in the embodiment of the present application, where the method may be applied to a central system device. Specifically, the data transmission method may include the following steps S301 to S302.

Step S301, obtaining event information and event priority of road events uploaded by each intelligent road station.

As shown in fig. 4, an event receiving module within the central system apparatus may receive event information and event priorities of a plurality of roadside intelligent stations. The event processing module is responsible for processing road events, including recording generation, cancellation, persistence, event information management, etc. of the road events.

Step S302, event information and event priority are sent to target intelligent stations in the intelligent stations.

Specifically, the central system device may determine an influence range of the road event according to the event information and the event priority, and then determine the target roadside intelligent station from the roadside intelligent stations according to the jurisdiction range and the influence range of the roadside intelligent stations.

In some embodiments, the event information may include an event location of the road event, and the impact range of the road event may be determined by rounding the event location with a preset radius. The preset radius may be positively correlated with the event priority, i.e., the higher the event priority, the greater the impact range. Based on the scope of influence, it may be determined whether the jurisdiction of each roadside intelligent station has an intersection with the scope of influence, and if so, it may be considered as the target roadside intelligent station. Correspondingly, the central system device can send the event information and the event priority to the target roadside intelligent station through the event sending module.

Fig. 5 shows a schematic implementation flow chart of a data transmission method provided in an embodiment of the present application, where the method may be applied to a target roadside intelligent station.

In step S501, the event priority and event information of the road event are acquired.

Specifically, in some embodiments, as shown in fig. 6, the target roadside intelligent station may detect a road event in the jurisdiction of the target roadside intelligent station, and event information of the road event. For example, the target road side intelligent station can receive the image collected by the camera through the camera data receiving module, and the event detecting module detects the road event in the image. For another example, the target road side intelligent station can acquire data acquired by a sensor such as a radar for collecting roads in the administrative region through the sensor receiving module, and the event detecting module detects a road event.

Accordingly, the target roadside intelligent station may calculate distances between the event location and the plurality of roadside units administered by the target roadside intelligent station based on the event location. The closer the distance, the higher the event priority. And setting a weight coefficient by combining two factors of the distance and the emergency degree of the road event, and obtaining the event priority by weighting operation. By way of example, event priority may be set as follows: events of general importance-events of general importance, priority centered; emergency event-event emergency, highest priority.

After the event priority is set, the target road side intelligent station can report the event information and the event priority to the central system equipment.

In other embodiments, the target intelligent road side station may also acquire, through the central system device receiving module, the event priority and event information of the road event detected by other intelligent road side stations sent by the central system device. And other intelligent road side stations, namely intelligent road side stations except the target intelligent road side station in the intelligent road side stations managed by the central system equipment.

Step S502, a second BST message is sent to the roadside unit.

Specifically, as shown in fig. 6, the target roadside intelligent station may generate a second BST message by using event information and event priority of the road event through the encoding module, and send the second BST message to the roadside unit through the sending module.

Fig. 7 is a schematic implementation flow chart of a data transmission method according to an embodiment of the present application, where the method may be applied to a roadside unit.

In step S701, a first BST message is acquired.

The first BST message sequentially carries an event priority and event information of the road event.

Specifically, as shown in fig. 8, the roadside unit may receive, through the BST message receiving module, a second BST message sent by the target roadside intelligent station, where the second BST message carries an event priority and event information. The first BST message may be obtained by encoding the event priority and the event information through an encoding module.

Specifically, after receiving the second BST message, the roadside unit may perform physical layer FM0 encoding. Wherein, FM0 codes use whether the level changes in a bit window to represent logic '1' and logic '0', and a bit window time length is set as T, wherein, logic '1' can be represented by '00' or '11', and logic '0' can be represented by '10' or '01'.

The FM0 encoding process is as follows: firstly, acquiring data of event information, turning over the level of a transmitting end, delaying for T/2, shifting the data, and judging whether the transmitting level needs to be turned over according to whether a shift-out bit is 0; after shifting 8 times, one byte is sent completely, the next data is taken, and the above operation is repeated until all data are sent completely, and coding is finished.

To embody the event priority, a code stream representing the event priority needs to be added in the FM0 encoding process. Before encoding the second BST message, 4 bit lengths are used to represent scene information in event information, such as "0000" for no event, "0001" for front fog, etc., and 4 bit lengths are used to represent event priority, such as "0000" for event not urgent, far distance, low priority, "1000" for event urgent, near distance, medium priority.

Step S702, a wake-up signal and a first BST message are sequentially sent to the on-board unit.

The wake-up signal may be used to wake up a receiving module of the on-board unit, and may specifically be a 14K square wave signal. Specifically, as shown in fig. 8, after the encoding of the code stream indicating the priority of the event is completed, the roadside unit may start to perform FM0 encoding, and after the encoding is completed, a square wave adding module adds a 14K square wave in front of the obtained data, so that a wake-up signal and a first BST message may be sequentially sent to the vehicle-mounted unit through a sending module.

Fig. 9 shows a schematic implementation flow chart of a data transmission method provided in the embodiment of the present application, where the method may be applied to a vehicle-mounted unit, and may be applicable to a situation where power consumption of the vehicle-mounted unit needs to be reduced.

Step S901, receiving a first BST message sent by a roadside unit in response to a wake-up signal sent by the roadside unit.

Specifically, as shown in fig. 10, when the receiving module of the in-vehicle unit receives the wake-up signal, the receiving module starts receiving data, and parses the code stream indicating the priority of the event therein. The receiving module may be a radio frequency receiving module.

In step S902, during the process of receiving the first BST message, the first BST message is parsed, and when the current electric quantity of the on-board unit and the event priority obtained by parsing meet the sleep condition, the processing module of the on-board unit is controlled to maintain the sleep state.

The processing module may be configured to parse event information in the first BST message.

Specifically, the vehicle-mounted unit can judge whether the sleep condition is met according to the current electric quantity and the event priority obtained through analysis, and if the sleep condition is met, the processing module of the vehicle-mounted unit can be controlled to keep the sleep state. Specifically, if the current electric quantity is smaller than a preset electric quantity threshold value and the analyzed event priority is lower than a priority threshold value, it can be confirmed that the current electric quantity and the analyzed event priority meet the dormancy condition. The electric quantity threshold and the priority threshold can be set according to actual conditions.

And if the current electric quantity is greater than or equal to a preset electric quantity threshold value, or the analyzed event priority is not lower than a priority threshold value, confirming that the current electric quantity and the analyzed event priority meet the wake-up condition. If the current electric quantity and the analyzed event priority meet the wake-up condition, a data processing module of the vehicle-mounted unit is waken, the first BST message is analyzed through the data processing module, event information is obtained and responded, and for example, prompt information can be output to remind a driver.

For example, if the current electric quantity of the vehicle-mounted unit is lower than 30%, only the road event with the highest event priority can trigger the receiving module to generate data interrupt, and the wake-up processing module processes and analyzes the data. The current power of the vehicle-mounted unit is higher and higher than 60%, and most road events can be processed. Otherwise, the receiving module will not generate interruption, the vehicle-mounted unit does not need to receive the data after that, and the processing module keeps the dormant state, so that the power consumption is reduced.

It should be noted that, for the sake of simplicity of description, the foregoing method embodiments are all expressed as a series of combinations of actions, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order according to the present application.

Fig. 11 is a schematic structural diagram of a data transmission device 1100 according to an embodiment of the present application, where the data transmission device 1100 is configured in a vehicle unit.

Specifically, the data transmission apparatus 1100 may include:

a message receiving unit 1101, configured to receive, in response to a wake-up signal sent by a roadside unit, a first BST message sent by the roadside unit, where the first BST message sequentially carries an event priority and event information of a road event;

the data processing unit 1102 is configured to parse the first BST message during receiving the first BST message, and when the current electric quantity of the on-board unit and the event priority obtained by parsing meet a sleep condition, control a processing module of the on-board unit to keep a sleep state, where the processing module is configured to parse the event information in the first BST message.

Fig. 12 is a schematic structural diagram of a data transmission device 1200 according to an embodiment of the present application, where the data transmission device 1200 is configured in a roadside unit.

Specifically, the data transmission apparatus 1200 may include:

a first obtaining unit 1201, configured to obtain a first BST message, where the first BST message sequentially carries an event priority and event information of a road event;

the first transmission unit 1202 is configured to sequentially send a wake-up signal and a first BST message to a vehicle-mounted unit, so that the vehicle-mounted unit receives the first BST message after receiving the wake-up signal, and analyze the first BST message in the process of the first BST message, so as to control a processing module of the vehicle-mounted unit to maintain a sleep state when a current electric quantity of the vehicle-mounted unit and the event priority obtained by analysis meet a sleep condition, where the processing module is configured to analyze the event information in the first BST message.

Fig. 13 is a schematic structural diagram of a data transmission device 1300 according to an embodiment of the present application, where the data transmission device 1300 is configured at a target roadside intelligent station.

Specifically, the data transmission apparatus 1300 may include:

A second acquiring unit 1301 configured to acquire an event priority and event information of a road event;

the second transmission unit 1302 is configured to send a second BST message to a road side unit, where the second BST message carries an event priority and event information of a road event, the second BST message is configured to enable the road side unit to encode to obtain a first BST message, so that the on-board unit receives the first BST message sent by the road side unit after receiving a wake-up signal sent by the road side unit, and analyze the first BST message in the process of the first BST message, so as to control a processing module of the on-board unit to maintain a sleep state when a current electric quantity of the on-board unit and the event priority obtained by analysis meet a sleep condition, where the processing module is configured to analyze the event information in the first BST message.

Fig. 14 is a schematic structural diagram of a data transmission device 1400 according to an embodiment of the present application, where the data transmission device 1400 is configured in a central system device.

Specifically, the data transmission apparatus 1400 may include:

a third acquiring unit 1401, configured to acquire event information and an event priority of a road event uploaded by each road side intelligent station;

A transmission unit 1402, configured to send the event information and the event priority to a target roadside intelligent station in each roadside intelligent station, where the target roadside intelligent station generates a second BST message according to the event information and the event priority, where the second BST message is used to enable the roadside unit to encode to obtain a first BST message, so that the on-board unit receives the first BST message sent by the roadside unit after receiving a wake-up signal sent by the roadside unit, and analyzes the first BST message in the process of the first BST message, so as to control a processing module of the on-board unit to maintain a sleep state when a current electric quantity of the on-board unit and the event priority obtained by analysis meet a sleep condition, where the processing module is configured to analyze the event information in the first BST message.

It should be noted that, for convenience and brevity of description, the specific working process of the data transmission device may refer to the corresponding process of the method described in fig. 1 to 10, which is not repeated herein.

Fig. 15 is a schematic diagram of a terminal device according to an embodiment of the present application. The terminal device 15 may be the aforementioned on-board unit, roadside intelligent station, or central system device.

Specifically, the terminal device 15 may include: a processor 150, a memory 151 and a computer program 152, such as a data transmission program, stored in the memory 151 and executable on the processor 150. The steps of the various data transmission method embodiments described above are implemented when the processor 150 executes the computer program 152. Alternatively, the processor 150, when executing the computer program 152, performs the functions of the modules/units of the apparatus embodiments described above.

The computer program may be divided into one or more modules/units, which are stored in the memory 151 and executed by the processor 150 to complete the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing the specified functions, which instruction segments are used for describing the execution of the computer program in the terminal device.

The terminal device may include, but is not limited to, a processor 150, a memory 151. It will be appreciated by those skilled in the art that fig. 15 is merely an example of a terminal device and is not meant to be limiting, and may include more or fewer components than shown, or may combine some components, or different components, e.g., the terminal device may also include input and output devices, network access devices, buses, etc.

The processor 150 may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 151 may be an internal storage unit of the terminal device, for example, a hard disk or a memory of the terminal device. The memory 151 may also be an external storage device of the terminal device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like, which are provided on the terminal device. Further, the memory 151 may also include both an internal storage unit and an external storage device of the terminal device. The memory 151 is used for storing the computer program and other programs and data required for the terminal device. The memory 151 may also be used to temporarily store data that has been output or is to be output.

It should be noted that, for convenience and brevity of description, the structure of the above terminal device may also refer to a specific description of the structure in the method embodiment, which is not repeated herein.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other manners. For example, the apparatus/terminal device embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical function division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each method embodiment described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium contains content that can be appropriately scaled according to the requirements of jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is subject to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims

1. A data transmission method, applied to an on-board unit, comprising:

receiving a first BST message sent by a road side unit in response to a wake-up signal sent by the road side unit, wherein the first BST message sequentially carries event priority and event information of a road event;

and in the process of receiving the first BST message, analyzing the first BST message, and controlling a processing module of the vehicle-mounted unit to keep a dormant state when the current electric quantity of the vehicle-mounted unit and the analyzed event priority meet a dormant condition, wherein the processing module is used for analyzing the event information in the first BST message.

2. The data transmission method of claim 1, further comprising, after parsing the first BST message:

if the current electric quantity and the event priority obtained through analysis meet a wake-up condition, waking up a data processing module of the vehicle-mounted unit;

and analyzing the first BST message through the data processing module to obtain the event information.

3. The data transmission method according to claim 1, wherein the data transmission method further comprises:

if the current electric quantity is smaller than a preset electric quantity threshold value and the event priority obtained through analysis is lower than a priority threshold value, confirming that the current electric quantity and the event priority obtained through analysis meet the dormancy condition;

otherwise, confirming that the current electric quantity and the analyzed event priority meet a wake-up condition.

4. A data transmission method, applied to a roadside unit, the data transmission method comprising:

acquiring a first BST message, wherein the first BST message sequentially carries the event priority and event information of a road event;

and sequentially sending a wake-up signal and a first BST message to the vehicle-mounted unit, so that the vehicle-mounted unit receives the first BST message after receiving the wake-up signal, and analyzing the first BST message in the process of the first BST message, so as to control a processing module of the vehicle-mounted unit to keep a dormant state when the current electric quantity of the vehicle-mounted unit and the event priority obtained by analysis meet the dormant condition, wherein the processing module is used for analyzing the event information in the first BST message.

5. A data transmission method, applied to a target roadside intelligent station, comprising:

acquiring event priority and event information of a road event;

and sending a second BST message to a road side unit, wherein the second BST message carries event priority and event information of a road event, the second BST message is used for enabling the road side unit to encode to obtain a first BST message, so that the vehicle-mounted unit receives the first BST message sent by the road side unit after receiving a wake-up signal sent by the road side unit, and analyzes the first BST message in the process of the first BST message, so that when the current electric quantity of the vehicle-mounted unit and the event priority obtained by analysis meet a dormancy condition, a processing module of the vehicle-mounted unit is controlled to keep a dormancy state, and the processing module is used for analyzing the event information in the first BST message.

6. A data transmission method, applied to a central system device, comprising:

acquiring event information and event priority of road events uploaded by each road side intelligent station;

the method comprises the steps that event information and event priority are sent to target intelligent stations in all intelligent stations of a road side, the target intelligent stations of the road side generate second BST information according to the event information and the event priority, the second BST information is used for enabling a road side unit to encode to obtain first BST information, the vehicle-mounted unit receives the first BST information sent by the road side unit after receiving a wake-up signal sent by the road side unit, and in the process of the first BST information, the first BST information is analyzed, so that when the current electric quantity of the vehicle-mounted unit and the event priority obtained through analysis meet dormancy conditions, a processing module of the vehicle-mounted unit is controlled to keep a dormancy state, and the processing module is used for analyzing the event information in the first BST information.

7. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the data transmission method according to any one of claims 1 to 3 when the computer program is executed;

alternatively, the processor, when executing the computer program, implements the steps of the data transmission method according to claim 4;

alternatively, the processor, when executing the computer program, implements the steps of the data transmission method according to claim 5;

alternatively, the processor, when executing the computer program, implements the steps of the data transmission method according to claim 6.

8. The data transmission system is characterized by comprising a vehicle-mounted unit and a road side unit;

the road side unit is used for acquiring a first BST message, and sequentially sending a wake-up signal and the first BST message to the vehicle-mounted unit, wherein the first BST message sequentially carries the event priority and the event information of a road event;

the vehicle-mounted unit is used for responding to a wake-up signal sent by the road side unit, receiving the first BST message, analyzing the first BST message in the process of receiving the first BST message, and controlling a processing module of the vehicle-mounted unit to keep a dormant state when the current electric quantity of the vehicle-mounted unit and the event priority obtained through analysis meet the dormant condition, wherein the processing module is used for analyzing the event information in the first BST message.

9. The data transmission system of claim 8, wherein the data transmission system further comprises a target roadside intelligent station and a central system facility;

the central system equipment is used for transmitting event information and event priority of road events uploaded by each road side intelligent station to a target road side intelligent station in each road side intelligent station;

the target road side intelligent station is used for sending a second BST message to the road side unit, wherein the second BST message carries the event priority and the event information of the road event;

the road side unit is specifically configured to receive a second BST message sent by the target road side intelligent station, and encode the event priority and the event information in the second BST message to obtain the first BST message.

10. A computer-readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the data transmission method according to any one of claims 1 to 3;

alternatively, the computer program when executed by a processor implements the steps of the data transmission method according to claim 4;

Alternatively, the computer program when executed by a processor implements the steps of the data transmission method according to claim 5;

alternatively, the computer program realizes the steps of the data transmission method according to claim 6 when being executed by a processor.