Principle of electronic eye capture

In recent years, with the further improvement of intelligent transportation construction in smart cities, electronic eyes on the road have become ubiquitous, while providing protection for traffic safety, and effectively regulating the illegal behavior of drivers. But many drivers have a fluke mentality about running red lights, thinking that they accidentally "wrongly ran", but in fact, they will be punished as well. Some drivers felt that they did not run through the red light, but were punished and succumbed. In fact, to avoid accidentally running through the red light, you must first understand the principle of the electronic police to catch the red light.

Shooting vehicle electronic monitoring violations

"Electronic Eye" is also known as "Electronic Police" and is the common name of "Intelligent Traffic Violation Supervision and Management System". There are two types of video electronic police, video surveillance 24 hours a day and digital electronic police by time. So how does the electronic eye take illegal photos?

1. The electronic eye uses the induction line to sense the pressure from the car on the road, collects the signal to the central processor through the sensor, and sends it to the register for temporary storage (the data is valid within a red light cycle); 2. At the same time interval In the (red light cycle), if two pulse signals are generated at the same time, it is regarded as "valid". Simply put, if the red light at that time, your head wheel passed the line, and the rear wheel did not exit the line, then only generated One pulse, when there are no two consecutive pulses, do not take pictures; 3. Some cases are: Some people drive the front wheel across the line, afraid of being photographed, so he reversed the car again, returned to the line, the result is still Photographed, what's the reason? It is because one after the other, a "pair" of pulse signals is generated (this pair of pulses are generated within the same red light cycle); 4. When the yellow light is on, the camera system starts after 2s delay; the red light is on At this time, the system has been started; when the green light is about to turn on, shut down the system 2s in advance, mainly to prevent false shooting.

At present, the red light electronic eyes are ground pressure magnetic induction coils. The intersections with electronic eyes are dug with diamond-shaped slots before and after the warning line, and the induction coil is buried inside.

The principle of electronic eye patting red light

1. When the front wheel of your car presses the induction coil on the ground, take the first photo of you electronically; 2. When the rear wheel of your car presses the induction coil on the ground, take the second photo of you electronically; 3. When your car presses the induction coil on the ground opposite through the intersection, electronically take a third photo of you.

Therefore, according to the working principle of the electronic eye, as long as we do n’t take three photos when we drive through the intersection with the electronic eye, we will not be considered to run through the red light, that is, do n’t touch the third item above, it ’s okay.

Electronic eye system characteristics: vehicle capture rate-100% (not including two-wheeled motorcycles); recognition time-about 1 second (must be much faster than your response); license plate recognition rate-more than 95% during the day and 90% at night Above (relatively high); the applicable speed is 5-180km / h (if you drive 190 in the city, you can run away, but the consequences of speeding are also very serious).

The principle of shooting yellow lights should be the same as that of red lights. Xinjiao said that when the yellow light is on, once any part of the body crosses the stop line, the vehicle can continue to pass, and it can not be considered as a yellow light. However, it is sometimes difficult to judge whether the body is passing the warning line when the yellow light is on at the intersection.

Violation handling process: The command center receives the picture and compares the license plate number information with the vehicle management office information, so as to call up the comprehensive information of the vehicle, such as the owner, model, color, etc., and then the information processing personnel website makes the illegal owner Ability to make inquiries.

Information loss problem: Not all illegal vehicles can be photographed. Only when the license plate picture is clear, the information entry personnel can enter the illegal vehicles into the database for processing. (However, do not intentionally block the number plate, otherwise according to the revised "Motor Vehicle Driver's License Application and Use Regulations" provisions: not hanging or failing to install the number plate according to the regulations, deliberately covering or deface the illegal behavior of the number plate 12 points )

Shooting range: A camera usually only shoots one lane, a few can shoot two lanes, and they are usually located on the first and second lanes from left to right. Digital cameras have a wide shooting range, so most of the urban areas can photograph all lanes in the same direction.

How to avoid being captured

First, it is the safest, that is, it does not violate the regulations; second, pay attention to the road conditions, see the camera (camera) on the crossbar in front, don't go; third, the recommended way, take the rightmost lane (front It doesn't work if you have a digital camera); Fourth, when you feel wrong, check it on the website. If there is no notice within a week, the information has not been processed and you are safe.

Through the above analysis of clicking on the police to take illegal shots, you know how to avoid being punished by accidentally breaking the red light!