CN108269416A - A kind of ETC releases news method for pushing and system - Google Patents

Abstract

The invention proposes an ETC dynamic information push method and system. First give the score value of the release information; match the release information with the vehicle and its traffic information, and calculate the matching value according to the matched content; calculate the ranking value of the release information according to the score value and matching value; Release information, the roadside unit RSU pushes the optimized release information to the on-board unit OBU unit for output. The present invention can dynamically select relevant information and push it to the vehicle-mounted terminal according to the specific conditions of passing vehicles, so that vehicle drivers can obtain more valuable information.

Description

A method and system for pushing ETC release information

technical field

The invention relates to the technical field of intelligent transportation, in particular to a method and system for pushing information issued by ETC.

Background technique

Electronic Toll of Collection (ETC) is an electronic automatic toll collection system commonly used in highways, bridges and tunnels. ETC's Road-Side Unit (RSU) and On-Board Unit (OBU) communicate through professional short-range microwave communication technology (Dedicated Short Range Communications, DSRC), which can automatically calculate the fare without stopping Rates and deductions for tolls.

The OBU is installed on the marked vehicle and is mainly used for storage of information such as identity and attributes, and as a communication repeater interacting with the DSRC microwave antenna. It has the characteristics of low cost, stable and reliable operation, and low power consumption. The communication between OBU and RSU is mainly to realize non-cash automatic payment. Existing DSRC communication can realize richer information interaction between highway management and vehicles, but frequent information interaction will consume a lot of battery power, and a lot of information may not be practical for drivers, which will greatly reduce the user experience. Therefore, the existing OBU is still based on a single payment function.

Designing intelligent message screening and push methods and systems based on existing communication methods, and establishing a channel for vehicles to communicate with the outside world will help solve various problems in user travel and expressway management, and improve the service level of management departments.

Contents of the invention

The present invention provides an ETC dynamic information push method and system, and the ETC can dynamically select relevant information and push it to the vehicle terminal according to the specific conditions of passing vehicles, so that vehicle drivers can obtain more valuable information.

In order to solve the above-mentioned technical problems, the present invention provides a push method for ETC release information, which gives the score value of the release information; matches and associates the release information with the vehicle and its traffic information, and calculates the matching value according to the matched content; value and matching value to calculate the ranking value of the released information; according to the sorting value to optimize the released information, the roadside unit RSU pushes the optimized released information to the on-board unit OBU unit for output.

Further, the ETC release information push method includes the following steps:

Step 1. The OBU unit sends the vehicle information and traffic information to the RSU unit, and the RSU unit records the received information and the corresponding location information of the RSU unit itself into the database;

Step 2. Match and associate the released information with the vehicle and its traffic information, and calculate the ranking value according to the score value and matching value of the released information;

The score value is used to describe the importance of the published information;

The matching value is used to describe the degree of association between the released information and the current vehicle;

The calculation method of the sorting value SortValue(m _k ) is shown in the following formula,

SortValue(m _k )=α×ScoreValue(m _k )+β×MatchValue(m _k )

in,

m _k is the kth published information, 0≤k≤MessageNum, and MessageNum is the total number of published information;

ScoreValue(m _k ) is the score value of the kth published information;

MatchValue(m _k ) is the matching value between the information recorded in the database and the kth published information, and its calculation method is: Among them, w _{i, j} is the j-th field in the i-th information record in the database, 0≤i≤N, N is the total number of information records in the database, 0≤j≤M, and M is the number used in a single information record The number of fields used to calculate the matching degree; ClassValue(w _i,j ) is the matching value when the jth field in the i-th information record appears in the k-th published information, and the value is determined by the information of the j-th field category determination;

Both α and β are weight values, and α+β=1;

Step 3: Sorting all published information from large to small according to the size of the sorting value;

Step 4. According to the sorting results of the published information, select one or more pieces of published information and send the published information to the OBU unit according to the predefined communication protocol format;

Step 5, the OBU unit outputs release information through the output interface.

The present invention also proposes an ETC release information push system, including an OBU unit and an RSU unit;

The OBU unit includes: a vehicle-mounted radio frequency transceiver unit for sending and receiving radio frequency signals; a vehicle-mounted protocol processing unit for parsing the received data according to the agreement and encoding the information sent; a vehicle-mounted data processing unit for Analyze and process various data; information storage unit, used to store vehicle information and traffic information; billing information management unit, used to manage vehicle payment cards and payment transactions; power management unit, used to provide Power supply; display unit, used to output information in the form of text; voice unit, used to output information in the form of voice;

The RSU unit includes: a roadside radio frequency transceiver unit, used to send and receive radio frequency signals; a roadside protocol processing unit, used to analyze the received data according to the agreement, and encode the information sent; the roadside data processing unit , used to analyze and process various types of data; information matching unit, used to calculate the ranking value of each published information, and sort the published information according to the size of the sorted value from large to small; information management unit, used to manage Addition, modification and deletion of published information; log management unit, used to record the running status of other units and vehicle traffic status; billing unit, used to calculate vehicle traffic fees and automatic deduction of fees; user interaction unit, use It is used to provide human-computer interaction interface for operators; roadside database unit is used for storage and management of various data and information.

Further, when a vehicle equipped with an OBU unit passes through an area occupied by an RSU unit, the OBU unit is activated; the on-board data processing unit reads vehicle information and traffic information from the information storage unit, and encodes the information through the on-board protocol processing unit, The vehicle-mounted radio frequency transceiver unit sends the coded information to the RSU unit; the roadside radio frequency transceiver unit receives the information sent by the vehicle-mounted radio frequency transceiver unit, the roadside protocol processing unit analyzes the received information according to the agreement, and the roadside data processing unit The information is analyzed and processed; the matching unit calculates the sorting value of each piece of published information, and sorts the published information from large to small according to the size of the sorting value, and then the roadside data processing unit selects one or more pieces of information corresponding to the received information The matching release information is handed over to the roadside protocol processing unit for encoding, and after encoding, the roadside radio frequency transceiver unit sends it to the OBU unit; after the vehicle radio frequency transceiver unit receives the release information sent by the roadside radio frequency transceiver unit, the vehicle protocol processing unit The received release information is analyzed according to the agreement, the on-board data processing unit stores the release information obtained by analysis in the information storage unit, the display unit outputs the content of the release information in the form of text on the display screen, and the voice unit outputs the content of the release information in the form of text voice output.

Preferably, the RSU unit calculates the ranking value according to the score value and matching value of the published information; the scoring value is used to describe the importance of the published information; the matching value is used to describe the degree of association between the published information and the current vehicle; the ranking value The calculation method of SortValue(m _k ) is shown in the following formula,

SortValue(m _k )=α×ScoreValue(m _k )+β×MatchValue(m _k )

in,

m _k is the kth published information, 0≤k≤MessageNum, and MessageNum is the total number of published information;

ScoreValue(m _k ) is the score value of the kth published information;

MatchValue(m _k ) is the matching value between the information recorded in the database and the kth published information, and its calculation method is: Among them, w _{i, j} is the j-th field in the i-th information record in the database, 0≤i≤N, N is the total number of information records in the database, 0≤j≤M, and M is the number used in a single information record The number of fields used to calculate the matching degree; ClassValue(w _i,j ) is the matching value when the jth field in the i-th information record appears in the k-th published information, and the value is determined by the information of the j-th field category determination;

Both α and β are weight values, and α+β=1.

Compared with the prior art, the present invention has the remarkable advantage that the present invention designs an intelligent message screening and push method and system based on the existing ETC communication mode, establishes a channel for the vehicle to communicate with the outside world, and communicates the released information with the vehicle and the outside world. The traffic information is matched and correlated, the sorting value of the released information is given, and the information is pushed according to the sorting result, which is beneficial to the vehicle driver to obtain more valuable information during driving, reduce the harassment of irrelevant information, and improve the travel experience; At the same time, it screens out more targeted receiving groups for information publishers, improves the efficiency of information release, and improves the service level of highway management departments.

Description of drawings

FIG. 1 is a schematic flowchart of the method for pushing ETC release information in the present invention.

Fig. 2 is a structural block diagram of the ETC release information push system of the present invention.

Detailed ways

It is easy to understand that, according to the technical solution of the present invention, those skilled in the art can imagine various implementations of the ETC release information push method and system of the present invention without changing the essence of the present invention. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the entirety of the present invention or as a limitation or limitation on the technical solution of the present invention.

The present invention designs an intelligent message screening and pushing method based on the existing ETC communication mode, and establishes a channel for the vehicle to communicate with the outside world. Firstly, the score value of the published information is given; secondly, the published information is matched with the vehicle and its traffic information, and the matching value is calculated according to the matched content; then, the sorting value of the published information is calculated according to the scoring value and matching value, and sorted according to The size of the value is sorted; finally, according to the sorting result, the optimal release information is pushed to the on-board unit for output.

As shown in Figure 1, an embodiment of the ETC release information push method includes the following basic steps:

Step 101, when a vehicle equipped with an OBU passes through an area occupied by an RSU, the OBU is activated, and the OBU sends the vehicle, traffic and other information to the RSU, and the RSU records the received information and the corresponding position of the RSU itself into the database .

According to this specific embodiment, the vehicle information can be OBU unique number, vehicle brand, vehicle model, license plate number, date of registration, contact person, contact information and other information; the traffic information can be route information and payment information, etc.; The position information corresponding to the RSU itself may be the geographical position information where the RSU is installed.

Furthermore, the route information may include information such as entrance location, entry time, exit location, exit time, and the shortest distance between entrances and exits; the payment information may include information such as driving mileage, payment amount, and payment time.

Step 102, matching and associating the published information with the vehicle and its traffic information, and calculating the ranking value according to the score value and matching value of the published information.

According to this specific embodiment, the score value is used to describe the importance of the published information; the matching value is used to describe the relationship between the published information and the current vehicle, the vehicle and traffic information is stored in the database, and the record entries of the same vehicle Distinguished by the same OBU unique number; the sorting value integrates the release information itself and the relationship between the release information and the vehicle, and its calculation function is:

SortValue(m _k )＝α×ScoreValue(m _k )+β×Match Value(m _k )

in,

m _k is the kth published message, 0≤k≤MessageNum, where MessageNum is the total number of published messages.

ScoreValue(m _k ) is the scoring value of the kth published information, 0≤ScoreValue(m _k )≤100, which is used to describe the importance of the published information. The way is given.

MatchValue(m _k ) is the matching value between the information recorded in the database and the kth published information. The higher the matching value, the greater the relationship between the published information and the current vehicle. The calculation method is:

Among them, w _i,j is the j-th field in the i-th information record in the database, 0≤i≤N, N is the total number of information records in the database, 0≤j≤M, M is used in a single information record The number of fields to calculate the degree of matching;

ClassValue(w _{i, j} ) is the matching value when the jth field in the i-th information record appears in the k-th published information. This value is determined by the category of the information to which the j-th field belongs. The category of the information can be For time, location, vehicle brand, vehicle model, license plate number, etc., the actual value can be obtained according to experience. 0≤ClassValue(w _i,j )≤100, ClassValue(w _i,j ) can usually be less than 10.

α+β=1, α≥0, β≥0, where α and β are weight values, when α=0, the ranking value is completely determined by the matching degree; when β=0, the ranking value is completely determined by the importance of the published information degree of decision.

Step 103, sorting all published information from large to small according to the size of the sorting value.

According to this specific implementation manner, the sorting can use classic sorting algorithms such as quick sorting and bubble sorting.

Step 104, according to the sorting result of the published information, select one or more pieces of published information and send the published information to the OBU according to the predefined communication protocol format.

According to this specific implementation manner, the number of published information records actually returned may be a predetermined constant value.

Step 105, after the OBU record receives the release information sent by the RSU, it outputs the information through the output interface.

According to this specific embodiment, the information output mode may be voice output or liquid crystal screen output.

Fig. 2 is an embodiment of the ETC release information push system of the present invention. The ETC release information push system mainly includes an OBU unit 210 and an RSU unit 310 . Wherein, the OBU unit includes a vehicle-mounted radio frequency transceiver unit 211, a vehicle-mounted protocol processing unit 212, a vehicle-mounted data processing unit 213, an information storage unit 214, a billing information management unit 215, a power management unit 216, a display unit 217, a voice unit 218; an RSU unit Including roadside radio frequency transceiver unit 311, vehicle protocol processing unit 312, vehicle data processing unit 313, information matching unit 314, information management unit 315, log management unit 316, billing unit 317, user interaction unit 318, roadside database unit 319 .

Specifically, the OBU unit 210 is installed in the vehicle, and is used for recording the state of the vehicle, exchanging information with the user, and communicating with the roadside unit 310 . Furthermore, the vehicle-mounted radio frequency transceiver unit 211 is used for sending and receiving radio frequency signals. The on-vehicle protocol processing unit 212 is used to analyze the received data according to the agreement, and encode the sent information. The on-board data processing unit 213 is the core processing unit in the OBU unit, which analyzes and processes various data. The information storage unit 214 is used to store on-vehicle information such as vehicles and traffic. The billing information management unit 215 is used to manage the vehicle payment card and payment transactions. The power management unit 216 is used to provide power for the operation of the OBU unit. The display unit 217 is used to output tolls, balances, release information and other contents in the form of text on the display screen. The voice unit 218 is used to output tolls, balances, release information and other content in the form of voice.

The RSU unit 310 is installed on the lane, and is used for recording the status of passing vehicles, managing and publishing information, and communicating with the vehicle-mounted unit 210 . Furthermore, the roadside radio frequency transceiver unit 311 is used for sending and receiving radio frequency signals. The roadside protocol processing unit 312 is used to analyze the received data according to the agreement, and encode the sent information. The roadside data processing unit 313 is the core processing unit of the RSU, which analyzes and processes various data. The information matching unit 314 is used to calculate the ranking value of each piece of published information, and sort the published information according to the size of the sorting value from large to small. The information management unit 315 is used to manage operations such as addition, modification and deletion of published information. The log management unit 316 is used to record the records of the operation status of each unit and the record of the vehicle traffic status. The billing unit 317 is used for calculating the fee of vehicle passing and the automatic deduction of the fee. The user interaction unit 318 is used to provide the operator with a human-computer interaction interface. The roadside database unit 319 is a basic support unit for various types of data, and is used for storing and managing data such as release information and vehicle traffic status.

According to this specific embodiment, when a vehicle equipped with an OBU passes through an area occupied by an RSU, the OBU unit 210 is activated, and vehicle information such as vehicles and passages are sent to the RSU unit 310. The RSU unit calculates the matching release information and ranks the highest value One or more pieces of release information are returned to the OBU unit 210, and the OBU unit outputs the release information through display or voice after receiving the release information.

Specifically, the vehicle-mounted radio frequency transceiver unit 211 receives radio frequency signals, the vehicle-mounted protocol processing unit 212 analyzes the received data according to the agreement, and the vehicle-mounted data processing unit 213 analyzes and processes various data, and reads the information of the vehicle from the information storage unit 214. , traffic and other on-board information, the information to be sent is encoded by the on-board protocol processing unit 212, and the information is sent to the RSU unit 310 through the on-board radio frequency transceiver unit 211, and the power management unit 216 is used to provide power for the operation of the OBU, billing information The management unit 215 manages vehicle payment cards and payment transactions.

The roadside radio frequency transceiver unit 311 receives radio frequency signals, the roadside protocol processing unit 312 analyzes the received data according to the agreement, the roadside data processing unit 313 analyzes and processes various data, and the log management unit 316 analyzes the operating status of each unit. The records of the record and the record information of the vehicle traffic state are recorded in the roadside database unit 319, and the matching unit 314 calculates the sorting value of each piece of published information, and sorts the published information from large to small according to the sorting value, and then the roadside data The processing unit 313 selects one or more release information, and the release information is encoded by the roadside protocol processing unit 312 and sent to the OBU unit 210 through the roadside radio frequency transceiver unit 311 . The information management unit 315 manages operations such as addition, modification and deletion of published information, the information is stored in the roadside database unit 319, and the user interaction unit 318 provides a human-computer interaction interface for operators. When a toll fee transaction occurs, the billing unit 317 calculates the vehicle toll fee and completes the automatic deduction of the fee.

The vehicle-mounted radio frequency transceiver unit 211 receives the radio frequency signal, the vehicle-mounted protocol processing unit 212 analyzes the received release information data according to the protocol agreement, the vehicle-mounted data processing unit 213 stores the release information obtained by the analysis into the information storage unit 214, and the display unit 217 releases the information. Content such as information is output on the display screen in the form of text, and the voice unit 218 outputs content such as release information in the form of voice.

Claims (5)

1. A push method for ETC release information, characterized in that, the scoring value of the release information is given; the release information is matched with the vehicle and its traffic information, and the matching value is calculated according to the matched content; according to the scoring value and the matching Calculate the sorting value of the published information; according to the sorting and sorting value, the published information is optimized, and the roadside unit RSU pushes the optimized published information to the on-board unit OBU for output. 2. according to the described ETC release information pushing method of claim 1, it is characterized in that, comprising the following steps: Step 1. The OBU unit sends the vehicle information and traffic information to the RSU unit, and the RSU unit records the received information and the corresponding location information of the RSU unit itself into the database; Step 2. Match and associate the released information with the vehicle and its traffic information, and calculate the ranking value according to the score value and matching value of the released information; The score value is used to describe the importance of the published information; The matching value is used to describe the degree of association between the published information and the current vehicle; The calculation method of the sorting value SortValue(m _k ) is shown in the following formula, SortValue(m _k )=α×ScoreValue(m _k )+β×MatchValue(m _k ) in, m _k is the kth published information, 0≤k≤MessageNum, and MessageNum is the total number of published information; ScoreValue(m _k ) is the score value of the kth published information; MatchValue(m _k ) is the matching value between the information recorded in the database and the kth published information, and its calculation method is: Among them, w _{i, j} is the j-th field in the i-th information record in the database, 0≤i≤N, N is the total number of information records in the database, 0≤j≤M, and M is the number used in a single information record The number of fields used to calculate the matching degree; ClassValue(w _i,j ) is the matching value when the jth field in the i-th information record appears in the k-th published information, and the value is determined by the information of the j-th field category determination; Both α and β are weight values, and α+β=1; Step 3: Sorting all published information from large to small according to the size of the sorting value; Step 4. According to the sorting results of the published information, select one or more pieces of published information and send the published information to the OBU unit according to the predefined communication protocol format; Step 5, the OBU unit outputs release information through the output interface. 3. A kind of ETC publishes information pushing system, is characterized in that, comprises OBU unit and RSU unit; The OBU unit includes: a vehicle-mounted radio frequency transceiver unit for sending and receiving radio frequency signals; a vehicle-mounted protocol processing unit for parsing the received data according to the agreement and encoding the information sent; a vehicle-mounted data processing unit for Analyze and process various data; information storage unit, used to store vehicle information and traffic information; billing information management unit, used to manage vehicle payment cards and payment transactions; power management unit, used to provide Power supply; display unit, used to output information in the form of text; voice unit, used to output information in the form of voice; The RSU unit includes: a roadside radio frequency transceiver unit, used to send and receive radio frequency signals; a roadside protocol processing unit, used to analyze the received data according to the agreement, and encode the information sent; the roadside data processing unit , used to analyze and process various types of data; information matching unit, used to calculate the ranking value of each published information, and sort the published information according to the size of the sorted value from large to small; information management unit, used to manage Addition, modification and deletion of published information; log management unit, used to record the running status of other units and vehicle traffic status; billing unit, used to calculate vehicle traffic fees and automatic deduction of fees; user interaction unit, use It is used to provide human-computer interaction interface for operators; roadside database unit is used for storage and management of various data and information. 4. according to the described ETC release information push system of claim 1, it is characterized in that, when the vehicle that OBU unit is housed passes through the zone that an RSU unit occupies, OBU unit is activated; The vehicle-mounted data processing unit reads vehicle information and traffic information from the information storage unit, encodes the information through the vehicle-mounted protocol processing unit, and the vehicle-mounted radio frequency transceiver unit sends the encoded information to the RSU unit; The roadside radio frequency transceiver unit receives the information sent by the vehicle radio frequency transceiver unit, the roadside protocol processing unit analyzes the received information according to the agreement, and the roadside data processing unit analyzes and processes the received information; the matching unit calculates each published information sorting value, and sort the released information from large to small according to the sorting value, and then the roadside data processing unit selects one or more pieces of published information that match the received information, and sends them to the roadside protocol processing unit for processing. Encoding, after encoding, it is sent to the OBU unit by the roadside RF transceiver unit; After the vehicle-mounted radio frequency transceiver unit receives the release information sent by the roadside radio frequency transceiver unit, the vehicle-mounted protocol processing unit will analyze the received release information according to the agreement, and the vehicle-mounted data processing unit will store the analyzed release information in the information storage unit, and the display unit The content of the published information is output in the form of text on the display screen, and the voice unit outputs the content of the published information in the form of voice. 5. according to the described ETC release information pushing system of claim 4, it is characterized in that, calculate sorting value according to the score value and matching value of release information; The score value is used to describe the importance of the published information; The matching value is used to describe the degree of association between the published information and the current vehicle; The calculation method of the sorting value SortValue(m _k ) is shown in the following formula, SortValue(m _k )=α×ScoreValue(m _k )+β×MatchValue(m _k ) in, m _k is the kth published information, 0≤k≤MessageNum, and MessageNum is the total number of published information; ScoreValue(m _k ) is the score value of the kth published information; MatchValue(m _k ) is the matching value between the information recorded in the database and the kth published information, and its calculation method is: Among them, w _{i, j} is the j-th field in the i-th information record in the database, 0≤i≤N, N is the total number of information records in the database, 0≤j≤M, and M is the number used in a single information record The number of fields used to calculate the matching degree; ClassValue(w _i,j ) is the matching value when the jth field in the i-th information record appears in the k-th published information, and the value is determined by the information of the j-th field category determination; Both α and β are weight values, and α+β=1.