The invention provides a traffic safety pre-warning system for pedestrians using mobile phones. The system comprises mobile terminals arranged in the mobile phones of the pedestrians; on-board units arranged in vehicles; a pedestrian crossing warning light arranged on a pedestrian crossing and used for giving alarm light when receiving a pre-warning instruction sent by a road side unit; and the road side unit arranged at the roadside of a pedestrian crossing of an intersection or a road section and used for analyzing whether conflict occurs between vehicles and pedestrians according to pedestrian dynamic information and vehicle dynamic information in a radiation area, and sending the pre-warning instruction to the mobile terminals of the pedestrians and the on-board units of the vehicles, wherein the pedestrians and the vehicles may have conflict, as well as the pedestrian crossing warning light. The system is arranged on the pedestrian crossing of an unsignalized intersection or road section, so that information sharing between drivers and crossing pedestrians can be realized efficiently and safely; and a unified safety early warning judgment criteria is established, thereby making up for the dangers possibly brought about by sensory differences between the drivers and the pedestrians.

A traffic safety pre-warning system and method for pedestrians using mobile phones

The invention discloses a method for leading a blind man across a road, a mobile terminal and a road indication device. The method comprises the steps of receiving pavement information of an intersection of the road indication device from the road indication device by the mobile terminal, wherein the pavement information is sent while the road indication device detects that the mobile terminal is within the preset range; acquiring the first operation time that all vehicles can first arrive at the intersection and the intersection width under the monitoring range of the road indication device from the pavement information; detecting the user moving speed; determining the second operation time that a user moves across the intersection according to the moving speed and the pavement width; providing strategy to the user to move across the road according to the relationship between the first operation time and the second operation time. According to the mode above, the method has the advantages that the strategy can be provided to the blind man to directly and effectively move across the road according to the pavement condition, and thus the safety of the blind man can be protected.

Method for leading blind man across road, mobile terminal and road indication device

The invention discloses a work method of an identification and early-warning system based on pedestrians and bicycle riders in front of a vehicle. An offline training module selects positive and negative samples of the upper half of the body from a video shot by the practical vehicle, an Adboost algorithm is used for training to obtain a cascaded classifier for identifying the upper half of the body, the cascaded classifier is provided for an online detection module, the online detection module uses a CCD camera to collect images, a video collection card is used for conversion, and an improved multi-scale scanning method is used for preprocessed images to obtain a subwindow; and the online detection module selects an identified target frame, and transmits the target frame to a collision early-warning module, and the collision early-warning module uses a monocular visual range-finding geometric model to calculate the horizontal distance X and the vertical distance D between a target and the vehicle, the vertical speed Vy of the target and the vertical collision time TTC; and such information and the speed of the vehicle u are integrated to determine the danger degree of the target, a driver is prompted timely, and accidents can be reduced o protect the pedestrians and bicycle riders.

Work method of identification and early-warning system based on pedestrians and bicycle riders in front of vehicle

The invention provides an intersection pedestrian anti-collision method based on vehicle-road coordination. The method comprises the steps that vehicle-borne monitoring equipment and road side monitoring equipment monitor a monitored area at the same time, and road pedestrians are detected; whether the road pedestrians are in a safe area is judged; the vehicle-borne monitoring equipment and/or the road side monitoring equipment emits alarm information to the road pedestrians if the road pedestrians are not in the safe area; and if the road pedestrians do not enter into the safe area within the predetermined time, the vehicle-borne monitoring equipment and/or the road side monitoring equipment emits early warning information to the road pedestrians and vehicles in and/or near the monitoring area. The invention also discloses a system for realizing the above method. According to the method and the system, the collision accidents of the vehicle and the pedestrians can be alarmed in advance, and the problem that risk can not be accurately predicted under light and sound wave shielding is solved.

Intersection pedestrian anti-collision method based on vehicle-road coordination and device thereof

The invention discloses a driving environment perception system based on vehicle-vehicle coordination. A driving state recognition module used for collecting a physical state of a driver is mounted in a vehicle; a collected signal is transmitted to a dedicated short range communication module by the driving state recognition module; the dedicated short range communication module transmits the signal to a human-computer interaction interface, and interacts information with a vehicle nearby, on which the driving environment perception system is mounted. On the basis of own driving performance and a consensus rule, a driving path, through which a user can regularly, safely and rapidly reaches a destination can be identified and planned reliably and accurately in real time. In the driving process, objects possibly having potential safety hazards on driving safety and around the driving path can be accurately identified in real time, so that the necessary operation can be carried out to avoid traffic accidents. Compared with a common driving environment perception system, the driving environment perception system and the method provided by the invention are more effective.

Driving environment perception system based on vehicle-vehicle coordination and method

The invention discloses a method and a system for avoiding the vehicle and pedestrian collision in road-vehicle coordination environment. The method comprises the following steps including (1) information collection: information used for identifying collision risk is collected; (2) driving state discrimination: the current driving state of a vehicle is discriminated; (3) collision risk identification: whether the collision risk exists or not is identified according to the collected collision risk information and the current driving state of the vehicle; (4) driving state discrimination: if the collision risk exists, whether the current driving state of a driver is normal or not is discriminated; (5) collision avoiding: a targeted avoiding method is adopted according to the driving state of the driver for implementing the collision avoidance. The method provided by the invention has the advantage that the in-time adaptation to the actual driving condition can be realized for realizing effective avoidance on different dangerous conditions.

Tan Qingshan

Papers

Method and system for avoiding vehicle and pedestrian collision in road-vehicle coordination environment