CN103617748A - Third-generation (3G) mobile phone-based real-time highway safety pre-warning system - Google Patents

Abstract

The invention discloses a third-generation (3G) mobile phone-based real-time highway safety pre-warning system. The system comprises three parts, namely a vehicle-mounted information acquisition device, a 3G smart phone and a central server. The vehicle-mounted information acquisition device acquires the state information, the position information and the speed and acceleration information and transmits the acquired data to the central server by connecting with the 3G mobile phone; the central server receives the data transmitted by all the vehicles, calculates safety-related vehicles of each vehicle and transmits the data of the related vehicles to each vehicle-mounted smart phone, so that each vehicle can monitor surrounding vehicles beyond visual range, and when an accident occurs in a front place out of sight, the smart phone alarms to remind a driver, and the driver can take effective measures in advance according to the pre-warning information, and a secondary accident is avoided.

Description

Real-time Safety Early Warning System of Expressway Based on 3G Mobile Phone

technical field

The invention belongs to a real-time safety early warning system, that is, the status information of the vehicle is sent to a remote server through a 3G mobile phone, and the remote server will send the information of the surrounding vehicles of the vehicle to the vehicle after receiving the data from the vehicle, thereby realizing the security of the vehicle. Monitor the status of surrounding vehicles beyond the line of sight, and then realize the safety warning function.

Background technique

Since the expressway is a fully enclosed road with a high index and linear shape, drivers usually have insufficient expectations for lateral obstacles and sudden obstacles ahead. When there is an accident ahead and the speed of the vehicle is high, the brakes are often insufficient, causing secondary accidents. Secondary accidents have become the first major hidden danger with the largest number of casualties in expressway accidents. If the vehicle enters the expressway, it sends its status information to the server in real time, and the server broadcasts it to the surrounding vehicles. Then when the vehicle has a traffic accident, the surrounding vehicles will immediately receive the early warning information from the server, and then take effective measures in advance. measures to avoid secondary accidents.

Contents of the invention

The invention provides a 3G mobile phone-based real-time safety early warning method for expressways. The method sends the status information to the server in real time after the on-board information collection device is connected to the 3G mobile phone, and the server broadcasts the received information to the surrounding vehicles, thereby realizing the real-time perception of the status of the surrounding vehicles by the vehicle, thereby realizing the safety warning function.

Traffic accidents are an important issue in the development of today's society, causing huge numbers of casualties and economic losses every year, especially on highways. Once an accident occurs, it is likely to cause continuous vehicle collisions and heavy losses. Therefore, in order to effectively solve this problem, the research on real-time security early warning technology is imminent. If one vehicle has an accident, the surrounding vehicles will quickly perceive the accident information through the real-time safety warning technology, especially in the area very close to the accident site, so that serial collision accidents can be avoided and losses can be reduced.

To realize the real-time security early warning function, high-speed and stable network transmission capability is required. my country's 3G network construction has been very mature, and the price of 3G mobile phones has been accepted by the general public. It is conceivable that in the next few years, the penetration rate of 3G mobile phones will definitely increase. The maturity of 3G network construction and the popularization of 3G mobile phones provide important support for the high-speed and stable network transmission capability required for real-time security warning.

The on-board information collection device integrates GPS, gyroscope, WIFI, OBD interface, and can collect the vehicle's position information, speed acceleration information and other information in real time. When the vehicle is driving, the user connects the 3G mobile phone to the vehicle-mounted information collection device, and the data collected by the vehicle-mounted information collection device is sent to the server through the network provided by the 3G mobile phone. After receiving the data from all the vehicles, the server will send the data of the surrounding vehicles to the vehicle after calculation, so as to realize the status monitoring of the surrounding vehicles beyond the visual distance by the vehicle, and then realize the safety warning function.

Description of drawings

Figure 1 is a working diagram of real-time security early warning. When a traffic accident occurs ahead, the vehicle A next to it will take the driving behavior of emergency braking. The on-board information collection device collects the sudden increase in the deceleration of vehicle A, and sends this data to the central server through the 3G network. After receiving it, the server sends it to On the 3G mobile phone of car B, the mobile phone client of car B will have an alarm message, thereby reminding the driver that there is emergency braking ahead to avoid secondary accidents.

Detailed ways

The system is divided into three parts. The on-board information collection device integrates GPS, gyroscope, WIFI, OBD interface. When in use, insert the on-board information collection device into the vehicle OBD interface to obtain vehicle status data, GPS and gyroscope can obtain vehicle position information and speed acceleration information. The on-vehicle information collection device connects to the 3G network of the mobile phone through the WIFI function, and transmits the collected data to the central server through the 3G network.

The central server is a powerful processor with fixed IP. The central server receives the data from each vehicle, and then analyzes the relevant vehicles of each vehicle (vehicles closely related to the safety of the vehicle, that is, surrounding vehicles), and sends the data of the relevant vehicles to the 3G mobile phone of the vehicle.

The mobile phone receives the data from the server, and the early warning software will calculate and display to the user whether it is safe beyond the line of sight according to the received data, so as to achieve the real-time security early warning function.

In this system, the mobile phone client software is realized by android programming language, and the server part is realized by javascript language programming.

After each vehicle enters the expressway, it uses a 3G mobile phone to establish a connection with the central server. In this way, the data transmission between the vehicle-mounted information collection device and the central server, and between the central server and the 3G mobile phone is smooth. Then the 3G mobile phone client software of each car will have status information such as the position information, speed acceleration information of the surrounding vehicles of the car. When a rear-end collision occurs in front, the vehicle next to it will have an emergency brake driving behavior. The vehicle-mounted information collection device collects the abnormal situation of sudden increase in deceleration, and sends this situation to the central server through the 3G mobile phone. After receiving it, the central server will Send this abnormal information to several vehicles immediately behind the vehicle. After the subsequent vehicles receive the data from the central server, the 3G mobile phone client software will have an abnormal alarm, thereby reminding the driver that there is an emergency brake of the vehicle ahead. Information, take effective measures in advance, so as to avoid the occurrence of secondary accidents.

Claims (5)

1. a highway actual time safety method for early warning of applying 3G network transmission, comprises on-vehicle information harvester, integrated GPS, gyroscope, WIFI module, OBD interface etc.On-vehicle information harvester connects 3G mobile by WIFI module and utilizes 3G network that the data that collect are sent to central server.Central server receives the data that all vehicles transmit, and after analyzing, can will send on the mobile phone of each car with the security-related data of each car.Software client on each car 3G mobile can demonstrate the traffic of periphery, and the place ahead sighting distance has warning while having abnormal conditions outward, with this, reach the function of actual time safety early warning.

2. as claimed in claim 1, it is characterized in that: being mainly used in highway actual time safety early warning field, is a kind of for improving the data transmission and processing technology of vehicle safety.

3. as claimed in claim 1, it is characterized in that: on-vehicle information harvester can connect vehicle OBD interface, Real-time Collection car status information.GPS module and gyro module can a vehicle of collection per second positional information and Velocity-acceleration information.On-vehicle information harvester can be shared the 3G network of mobile phone by WIFI module, by 3G network, image data can be transferred to remote center's server.

4. as claimed in claim 1, remote center's server receives the information of vehicles that on highway, each car transmits, and then can judge the nearby vehicle of each car, and each car nearby vehicle information is sent on each parking by mobile phone.By each car of cell phone software client, can see intuitively like this positional information of nearby vehicle, Velocity-acceleration information etc., thus realize the over the horizon monitoring of many peripheries of vehicle situation, reach the function of actual time safety early warning.

Due to GPS information be renewal per second once, so data acquisition and transmission time interval are all set to once per second.

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