CN103745609A - Short-distance communication protocol based vehicle alarming terminal - Google Patents
Short-distance communication protocol based vehicle alarming terminal Download PDFInfo
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Abstract
The invention discloses a vehicle alarming terminal, which comprises a satellite positioning module, a short-distance wireless communication module, an early warning notification module, a configuration module and a core processing module, wherein the satellite positioning module is used for acquiring the position information and traveling direction information of a current vehicle, and transmitting the position information and the traveling direction information to the core processing module; the configuration module is used for generating an alarming signal; the short-distance wireless communication module is used for transmitting or receiving alarming information; the core processing module is used for generating the alarming information when the current vehicle is dangerous, and judging whether an early warning notification triggering condition is met or not after receiving the alarming information when the current vehicle is not dangerous; the early warning notification module is used for transmitting the alarming signal according to the judgment of the core processing module. According to the technical scheme, a dangerous state on a road can be early-warned, and other vehicles within an effective transmission distance range can be rapidly notified of the alarming information when an accident occurs to a vehicle ahead, so that the phenomenon of tailgating is effectively prevented.
Description
Technical Field
The invention relates to the field of communication, in particular to a vehicle alarm terminal based on a near field communication protocol.
Background
With the economic development of China, the number of automobiles is gradually increased year by year, and road traffic is developed in a crossing manner, so that the road traffic accidents are greatly increased.
Meanwhile, communication terminals based on the short-range communication protocol are increasingly widely used in the fields of communication, traffic, and the like, such as IEEE 802.11p protocol, WIA-PA, RFID, zigbee …, and the like, which are widely used at present. Taking the IEEE 802.11p protocol as an example, which is a communication protocol extended by the IEEE 802.11 standard, is mainly used for vehicle-mounted electronic wireless communication, and it expands the conventional wireless short-distance network technology, can implement very useful functions for automobiles, and most importantly, can communicate on a vehicle-mounted specified frequency. Can serve as the basis for dedicated short-range communication or vehicle-mounted communication.
Based on the development of the existing communication technology, the information interaction between vehicles and between the vehicles and road traffic infrastructure can be improved, and the understanding of vehicle drivers on road conditions is enhanced, so that early warning can be realized, and traffic accidents can be effectively avoided. How to combine the existing communication technology into the vehicle-mounted equipment to realize the early warning processing is a problem to be solved.
Disclosure of Invention
The invention aims to reduce the occurrence rate of traffic accidents and enhance information interaction among vehicles, and provides a vehicle alarm terminal based on a short-distance communication protocol.
Therefore, the invention aims to provide a vehicle alarm terminal, which comprises a satellite positioning module, a short-distance wireless communication module, an early warning notification module, a configuration module and a core processing module, wherein the core processing module is connected with the satellite positioning module, the short-distance wireless communication module, the early warning notification module and the configuration module respectively;
the satellite positioning module is used for continuously acquiring the position information and the driving direction information of the current vehicle from the navigation system and transmitting the acquired position information and the driving direction information to the core processing module;
the configuration module is provided with an alarm key and is used for receiving the trigger of the alarm key and sending an alarm signal to the core processing module when the current vehicle is a dangerous vehicle;
the short-distance wireless communication module is used for broadcasting alarm information which is generated by the current vehicle core processing module and carries current vehicle position information and driving direction information; receiving alarm information which is broadcasted by surrounding dangerous vehicles and carries dangerous vehicle position information and driving direction information, and simultaneously transmitting the received alarm information to a core processing module;
the core processing module is used for generating alarm information carrying current vehicle position information and driving direction information when receiving the alarm signal transmitted by the configuration module; when the alarm information is received, judging whether an early warning notification triggering condition is met or not according to the position information and the driving direction information of the current vehicle and the position information and the driving direction information of the dangerous vehicle in the alarm information;
the early warning notification module is used for sending out warning signals according to the judgment of the core processing module.
Preferably, the warning notification triggering condition is:
when the current vehicle running direction is vertical to the running direction of the dangerous vehicle;
or,
the current vehicle driving direction is consistent with the dangerous vehicle driving direction, and the relative distance between the current vehicle and the dangerous vehicle is smaller and smaller.
Preferably, the current vehicle driving direction is perpendicular to the dangerous vehicle driving direction, which means that an included angle between the current vehicle driving direction and the dangerous vehicle driving direction is 90 °.
Preferably, the current vehicle running direction is consistent with the running direction of the dangerous vehicle, which means that an included angle between the current vehicle running direction and the running direction of the dangerous vehicle is less than 90 degrees; the relative distance between the current vehicle and the dangerous vehicle is smaller and smaller, namely the relative distance between the current vehicle and the dangerous vehicle of the Nth acquisition point after the alarm information is received is smaller than the relative distance between the current vehicle and the dangerous vehicle when the alarm information is received.
Preferably, the included angle between the current vehicle running direction and the dangerous vehicle running direction is larger than 90 degrees, and the early warning notification triggering condition is not met.
Preferably, the alert signal is an audio signal.
Preferably, the vehicle alarm terminal further comprises a power management module, and the power management module is connected with a USB interface of the vehicle.
Preferably, the dangerous vehicle refers to a vehicle that has a breakdown, accident or emergency stop.
Preferably, the satellite navigation system is a GPS or beidou navigation system.
Based on the vehicle alarm terminal, when the vehicle has an accident or needs to be stopped and overhauled, the driver manually opens the accident alarm switch, the alarm information can be rapidly notified to the subsequent vehicles in the effective transmission distance range of the short-distance communication protocol (such as 802.11P, WIA-PA, RFID and zigbee protocols), the delay of the response to the emergency caused by the fatigue state caused by the long-time driving of the subsequent vehicles is prevented, the accident state in front is early warned in advance, and the rear-end collision phenomenon is effectively prevented.
Drawings
Fig. 1 is a schematic structural diagram of a vehicle alarm terminal.
Fig. 2 shows a case where the vehicle runs in the reverse direction.
Fig. 3 is a case where the vehicle is crossly driven at an intersection.
Fig. 4 shows a case where the vehicles travel in the same direction.
Fig. 5 is an accident early warning process of the vehicle alarm terminal.
Detailed Description
A vehicle alarm terminal according to an embodiment of the present invention is described below with reference to the accompanying drawings of the specification.
Fig. 1 is a schematic structural diagram of a vehicle alarm terminal according to an embodiment of the present invention.
As shown in fig. 1, the vehicle alarm terminal includes a power management module, a satellite positioning module, a short-range wireless communication module, a configuration module, an early warning notification module, and a core processing module respectively connected to the satellite positioning module, the short-range wireless communication module, the configuration module, and the early warning notification module.
The power management module is connected with a USB interface of the vehicle, and provides power support for the terminal to ensure that the terminal can work normally.
The satellite positioning module is a module for receiving and analyzing satellite positioning data, and is used for continuously acquiring the position information and the driving direction information of the vehicle and transmitting the acquired position information and the driving direction information to the core processing module.
The configuration module is mainly used by the driver and is provided with an alarm key. When the current vehicle has an accident or a fault or meets a dangerous condition, namely the current vehicle is a dangerous vehicle, a driver can manually press an alarm key in the configuration module, and the configuration module sends an alarm signal to the core processing module, so that the core processing module generates alarm information carrying vehicle position information and driving direction information.
The short-distance wireless communication module is mainly used for carrying out bidirectional transmission of alarm information, on one hand, when the current vehicle is a dangerous vehicle, the short-distance wireless communication module acquires the alarm information carrying position information and driving direction information of the short-distance wireless communication module from the core processing module and broadcasts the alarm information to surrounding vehicles; and on the other hand, receiving alarm information carrying dangerous vehicle position information and driving direction information broadcasted by surrounding dangerous vehicles, and transmitting the alarm information to the core processing module.
The core processing module is a central processing unit of the vehicle alarm terminal. On one hand, if the current vehicle is a dangerous vehicle, after the configuration module transmits an alarm signal, generating alarm information carrying the position information and the driving direction information of the current vehicle based on the position information and the driving direction information of the current vehicle obtained from the satellite positioning module, and broadcasting the alarm information through the short-distance wireless communication module; on the other hand, if the current vehicle is a non-dangerous vehicle and other vehicles around the current vehicle are dangerous vehicles, the warning information which is transmitted by the short-distance wireless communication module and carries the position information and the driving direction information of the dangerous vehicles around the current vehicle is received, the position information and the driving direction information of the vehicle are compared with the position information and the driving direction information in the warning information of the dangerous vehicles, whether the current vehicle needs early warning notification or not is determined, and if the triggering condition of the early warning notification is met, the early warning notification module is triggered to notify that the front of the vehicle owner of danger exists.
The early warning notification triggering condition is mainly that the position information and the driving direction information of the dangerous vehicle are compared with the position information and the driving direction information of the vehicle, if the directions are consistent, the relative distance is closer and closer, or the directions are vertical, the early warning notification module is triggered to send out an alarm. Let the running direction of the dangerous vehicle be alpha and the direction of the normal running vehicle be beta.
If the included angle between alpha and beta is larger than 90 degrees, the dangerous vehicle and the normal vehicle are judged to run reversely, and the early warning notification module is not required to be triggered. As shown in FIG. 2, the velocity vectors of two vehicles are V1And V2The included angle between the driving directions of the vehicle a and the vehicle b is 180 degrees, and no matter which vehicle is in a dangerous condition, the driver of the other vehicle does not need to be informed.
If the angle between α and β is equal to 90 °, this situation is likely to occur at the intersection, as shown in fig. 3, where the velocity vectors of two vehicles b, a are V1And V2At the moment, the driving directions of the two vehicles are crossed and vertical, and the crossroad has more people and often blocks the sight of a driver, so that the early warning notification module also needs to be triggered at the moment to send out an alarm.
If the included angle between α and β is smaller than 90 °, it indicates that the dangerous vehicle and the normal vehicle are likely to travel in the same direction at this time, and it can be determined that the directions of the two vehicles are the same. However, a dangerous vehicle may be behind a normal running vehicle, so in order to improve the accuracy of early warning, whether to give an alarm or not is judged according to the relative distance between the vehicles. And if the relative distance is smaller and smaller, the early warning notification module gives an alarm, otherwise, the early warning notification module does not give an alarm. As shown in fig. 4, if the driver of the preceding vehicle a has manually triggered the hazard alarm, the alarm terminal installed in the normal running vehicle b will first compare the distance S between the hazardous vehicle a and the normal running vehicle b at the time of the alarm of the vehicle a1And judging whether to alarm according to the change condition of the distance between the N acquisition points which are more than or equal to 2 (N =3 in the example) after the alarm, and if the change condition of the distance between the N acquisition points and the N acquisition points is smaller, sending an alarm by the early warning notification module.
The early warning notification module is used for sending out a warning signal according to the judgment of the core processing module to remind the current vehicle driver. After the core processing module receives alarm information transmitted by a surrounding dangerous vehicle alarm terminal, the early warning notification module sends out an alarm signal in a ringing or other audio frequency or other modes to notify a driver of a vehicle that the front part is dangerous and remind the driver to decelerate when the early warning notification triggering condition is met, namely when the early warning notification triggering condition is met, the early warning notification module judges that the front part is dangerous according to the position information and the driving direction information of the early warning notification module and a dangerous vehicle; and if the early warning notification triggering condition is not met, not sending out the warning signal.
The accident early warning process of the vehicle alarm terminal of the present invention is further described by an example.
As shown in fig. 5, two vehicles a and b installed with the vehicle alarm terminal of the present invention are set to normally travel on the highway. After the vehicle a has an accident or needs to be parked on the spot due to other reasons, the vehicle alarm terminal receives manual trigger of a driver of the vehicle a through an alarm key in the configuration module, then the core processing module generates alarm information carrying the position information and the driving direction information of the vehicle a according to the position information and the driving direction information of the vehicle a acquired from the satellite positioning module, and then the alarm information is broadcasted through the short-distance wireless communication module of the vehicle a. After the vehicle alarm terminal of the vehicle b receives the alarm information of the vehicle a through the short-distance wireless communication module, the core processing module respectively compares the position information and the driving direction information of the vehicle a with the position information and the driving direction information of the core processing module: when the core processing module of the vehicle b judges that the running direction of the vehicle b is vertical to the running direction of the dangerous vehicle a, the accident condition possibly occurs at the intersection, the core processing module triggers the early warning notification module, and sends out a warning signal in a ringing mode to remind a driver; when the core processing module of the vehicle b judges that the driving direction of the vehicle b is not vertical to the driving direction of the dangerous vehicle a, if the core processing module of the vehicle b judges that the driving direction information of the vehicle b is consistent with the driving direction information of the dangerous vehicle a and the relative distance between the two vehicles is smaller and smaller, the vehicle b is proved to be subjected to the dangerous vehicle a and has the need of early warning, and therefore the core processing module triggers the early warning notification module; if the core processing module of the vehicle b judges that the information of the driving direction of the vehicle b is inconsistent with the information of the driving direction of the dangerous vehicle a or the driving direction is consistent but the relative distance between the two vehicles is farther and farther, the possibility of encountering the dangerous vehicle a is avoided, so that the early warning notification module is not triggered, and the vehicle b can still normally drive.
In view of the fact that the vehicle alarm terminal has the satellite positioning capability and the communication capability, the vehicle alarm terminal can also provide a plurality of extended applications, such as: based on the position information and the speed information acquired by the satellite navigation system, floating car data can be effectively acquired, and real-time traffic conditions can be judged. Based on the communication capability of the terminal, an accident broadcasting terminal can be installed on a road section where accidents easily occur, and when a vehicle enters the road section, the front of the vehicle is timely informed of the road section where accidents occur frequently.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A vehicle alarm terminal is characterized by comprising a satellite positioning module, a short-distance wireless communication module, an early warning notification module, a configuration module and a core processing module which is respectively connected with the satellite positioning module, the short-distance wireless communication module, the early warning notification module and the configuration module;
the satellite positioning module is used for continuously acquiring the position information and the driving direction information of the current vehicle from the satellite navigation system and transmitting the acquired position information and the driving direction information to the core processing module;
the configuration module is provided with an alarm key and is used for receiving the trigger of the alarm key and sending an alarm signal to the core processing module when the current vehicle is a dangerous vehicle;
the short-distance wireless communication module is used for broadcasting alarm information which is generated by the current vehicle core processing module and carries current vehicle position information and driving direction information; receiving alarm information which is broadcasted by surrounding dangerous vehicles and carries dangerous vehicle position information and driving direction information, and simultaneously transmitting the received alarm information to a core processing module;
the core processing module is used for generating alarm information carrying current vehicle position information and driving direction information when receiving the alarm signal transmitted by the configuration module; when the alarm information is received, judging whether an early warning notification triggering condition is met or not according to the position information and the driving direction information of the current vehicle and the position information and the driving direction information of the dangerous vehicle in the alarm information;
the early warning notification module is used for sending out warning signals according to the judgment of the core processing module.
2. The vehicle alarm terminal of claim 1, wherein the pre-warning notification trigger condition is:
when the current vehicle running direction is vertical to the running direction of the dangerous vehicle;
or,
the current vehicle driving direction is consistent with the dangerous vehicle driving direction, and the relative distance between the current vehicle and the dangerous vehicle is smaller and smaller.
3. The vehicle alarm terminal according to claim 2, wherein the current vehicle driving direction is perpendicular to the dangerous vehicle driving direction, and the angle between the current vehicle driving direction and the dangerous vehicle driving direction is 90 °.
4. The vehicle alarm terminal according to claim 2, wherein the current vehicle driving direction is identical to the dangerous vehicle driving direction, which means that the included angle between the current vehicle driving direction and the dangerous vehicle driving direction is less than 90 °; the relative distance between the current vehicle and the dangerous vehicle is smaller and smaller, namely the relative distance between the current vehicle and the dangerous vehicle of the Nth acquisition point after the alarm information is received is smaller than the relative distance between the current vehicle and the dangerous vehicle when the alarm information is received.
5. The vehicle alarm terminal of claim 1, wherein the angle between the current vehicle direction of travel and the direction of travel of the hazardous vehicle is greater than 90 ° and the pre-warning notification trigger condition is not satisfied.
6. The vehicle alarm terminal of claim 1, wherein the alarm signal is an audio signal.
7. The vehicle alarm terminal of claim 1, further comprising a power management module, the power management module being connected to a USB interface of the vehicle.
8. The vehicle alarm terminal of claim 1, wherein the dangerous vehicle is a vehicle that has a breakdown, accident or emergency stop.
9. The vehicle alarm terminal of claim 1, wherein the satellite navigation system is a GPS or beidou navigation system.
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| CN104134371A (en) * | 2014-07-09 | 2014-11-05 | 奇瑞汽车股份有限公司 | Method and device for early warning of vehicle collision |
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Application publication date: 20140423 |