demand analysis
With the development of economic growth and urbanization, new urban transportation infrastructure has been continuously put into construction, the flow of people and vehicles has shown rapid growth, and the traffic and road command tasks of relevant departments have become more and more onerous. Urban road traffic management has always been a major issue in the development of modern cities.
As an important part of the urban road traffic command system, the video surveillance system can provide traffic commanders with intuitive road traffic information and real-time traffic conditions, which is conducive to traffic commanders to detect various traffic violations and other suspicious situations and respond quickly . The real-time recording function of the video surveillance system is also a means of obtaining evidence for handling traffic accidents and assisting in social security rectification.
System software features
The Safe City Intelligent Transportation System is setting off a global surveillance revolution. The editor first introduces the principles and features of the intelligent video monitoring system dedicated to traffic.
Through the principle of intelligent video monitoring, collection-detection-upload data-alarm
The traffic supervision and detection system scheme based on principled intelligent video detection technology has the following characteristics:
(1) The collection method is excellent, the algorithm is advanced, and the accuracy of the data provided is high;
(2) Video detection technology for passenger flow monitoring can realize automatic monitoring in various complex areas, and has strong applicability; set up intrusion detection or warning tripwire detection (direction can be set) or warning area detection, the system automatically detects the picture situation and finds When someone breaks into the set area, such as the entrance of the outdoor high-voltage equipment area of the substation, the system will automatically alarm to remind the monitoring personnel to pay attention to the on-site situation.
(3) When data is collected, test indicators can be uploaded quickly and in time
Propose a plan
Video monitoring system software
Camera monitoring and intelligent video monitoring are combined to direct vehicles, pedestrians and cyclists, detect road incidents, and collect valuable traffic data. The main advantages of video monitoring software in traffic supervision include:
· Ground inspection
· Combination of data, alarms and video images
· High reliability
· Flexible configuration
· Wide detection area
· Installation and configuration do not affect road traffic
· Low maintenance cost
The software has a built-in algorithm called advanced image processing and analysis. This allows the detection sensor to detect even the smallest thermal differences.
Let's take a look at what contribution our company's intelligent video surveillance software can make to transportation construction.
Safe City Intelligent Transportation Application Range:
Vehicle status detection for intersection control
Sidewalk status detection
Queue detection and data collection
Traffic data
data monitoring
Automatic traffic incident detection
Public railway track level crossing detection on train/subway/tram tracks
Vehicle inspection at railway crossings
Detect people on track
Tunnel event detection
The surveillance camera can detect all major events within a few seconds: vehicles stopped, driving in the wrong direction, queuing, slow-moving vehicles, falling objects... Detection and rapid event verification in such a short period of time can greatly reduce the impact of the event. Prevent secondary accidents. Efficient incident management depends entirely on fast incident detection and verification! Each missed minute increases the risk of another traffic accident and greatly increases the time to clean up the accident site.
Transportation application field
Intersection monitoring:
1. Illegal steering and U-turn
Adopt the "mobile tracking and monitoring" mode of intelligent video surveillance. Once a vehicle violates the prescribed driving direction, an alarm will be triggered. When the route is prohibited, the system's monitoring function is activated through the traffic light signal line to monitor whether there are vehicles driving illegally; when the route is allowed to pass, the system's monitoring function is disabled through the traffic light signal line, and the alarm will not be triggered at this time.
2. Running a red light
Running a red light is the most common traffic violation and one of the important causes of traffic accidents. The camera at the intersection can monitor the location near the parking line, and set the "movement tracking monitoring" mode in the corresponding area. When the red light is on, the system's monitoring function is activated through the traffic light signal line to monitor whether a vehicle has passed the red light; when the green light is on When it is on, the monitoring function of the system is disabled through the signal line. At this time, the alarm will not be triggered when the vehicle passes.
Section monitoring:
Urban arterial roads generally have a relatively large flow of people and vehicles, and the traffic situation is more complicated. The current intelligent video surveillance here cannot identify all traffic violations, but it can still effectively share part of the work of the surveillance personnel. In some road sections where the traffic conditions are not complicated, intelligent video surveillance can take on most of the work. In this way, limited human resources and monitor resources can be allocated more effectively and reasonably.
Intelligent video surveillance can be used to monitor the following behaviors in road section monitoring:
1. One-way street monitoring
The reverse direction of the vehicle can easily cause serious traffic accidents. The "directional mobile monitoring" mode of intelligent video surveillance can be adopted. The system will automatically recognize vehicles traveling in the opposite direction.
2. Illegal parking
On certain road sections where parking is not allowed, especially on roads such as viaducts and overpasses, the speed is usually faster. Illegal parking is not only easy to block traffic, but also more likely to cause traffic accidents. The "object retention monitoring" mode of intelligent video surveillance can be adopted. An alarm will be triggered when the vehicle is stationary for more than a certain period of time in such a lot.
3. The goods fall
When a vehicle is passing by, the goods may fall off the road, which is usually not noticed by the driver. Objects falling on the road may cause danger when picked up by passers-by, or hinder subsequent vehicles from driving. Using the "object retention" mode of intelligent video surveillance, the system will alarm in time when a stationary object that does not exist on the road is detected by the system.
4. Monitor vehicle speed
Urban roads usually have a large flow of people and vehicles, and high-speed driving can easily cause traffic accidents. Many sections of roads have clear speed limits. Using the "speed monitoring" mode of intelligent video surveillance, an alarm is triggered when the vehicle is found to be overspeed.
5. Monitoring road crossing
Pedestrians crossing the green belt in the middle of the main road or crossing the isolation fence in violation of regulations can easily cause traffic accidents. The "sudden appearance monitoring" mode of intelligent video surveillance can be adopted. After such behavior is found in the no-passing zone, the system will immediately alarm.
6. Illegal overtaking and lane change
In the road section where lane change and overtaking are prohibited, the two sides of the solid line of the road center can be divided into two monitoring areas, and the "moving path monitoring" mode of intelligent video monitoring can be adopted. Once a vehicle crosses the lane from one lane to another, that is It is judged to be an illegal change of lane or illegal overtaking behavior. Due to the influence of the monitoring angle and other objective conditions, the delimitation of the two monitoring areas should maintain an appropriate distance to reduce false alarms.
7. Vehicle statistics
Provide real-time traffic flow information on important road sections in a timely manner, so that citizens can understand and adjust travel routes in advance, so that traffic diversion and diversion become a spontaneous behavior. The "vehicle statistics" function of intelligent video surveillance can count the traffic flow in two directions on a road section. This information not only has a certain reference value for the traffic control center, but also can be connected to the urban traffic guidance screen to display the road section under the integrated research and development situation. Traffic conditions provide convenience for the general public to travel.
