Radar Speed LED Signs
| Pixel Pitch | P4-P5-P10 |
|---|---|
| Cabinet size | 640*960mm,64*1280mm, |
| Module size: | 320*160mm |
| Refresh rate: | 1920Hz |
| Power: | Max:800W/sqm,Avg:250W/sqm |
| Waterproof : | IP65 |
| Brightness: | 6000cd |
| Input Voltage: | 110-220V |
Composition and Function of Radar Speed LED Screen
The radar speed measurement feedback LED screen is composed of three parts: speed sign board, multi-lane high-precision flat panel radar and LED display.
When the vehicle enters the position about 10-200 meters in front of the radar speed feedback instrument, the LED display will display the speed of the vehicle. If there are multiple vehicles driving in this area at the same time, the LED display will display the highest speed among these vehicles. vehicle speed (the closest display mode can be selected).
Radar speed screen – LED radar speed feedback instrument for real-time detection of vehicle speed”
The radar speed measurement feedback screen system can realize the speed measurement through the dedicated multi-lane high-precision microwave radar, and provide real-time feedback of the speed of the incoming vehicle and the change of the driving speed.
The radar speed measurement feedback system can be combined with a fixed speed camera system to capture and identify speeding vehicles that do not follow the speed specified by the signs in the past, so as to prepare for punishment by law enforcement agencies.
The radar speed measurement feedback system has unique and leading technical advantages in the industry to ensure high speed measurement accuracy, stable quality and durability. The LED light shows low power consumption, long life, and high brightness. The radar adopts multi-lane high-precision speed measurement flat radar. The speed measurement error is lower than 1KM/H below 100KM/H, and the speed measurement error is lower than 2KM/H below 100KM/H; 199KM/H. Speed range 1-199KM/H.
Top Shine LED Radar Speed Signs Advantage
Maximum detection speed: 199 km/h Prompt speed limit display mode: set the safe speed value, the green number will be displayed within the safe speed, and the red number will be displayed when the speed is exceeded. Only display the speed of oncoming vehicles, and filter out the speed interference of vehicles in the opposite direction
Speed limit LED sign with radar and camera Scope of application: urban expressways, expressways, suburban connecting lines, institutions and colleges and other road sections with limited speed, especially road sections where pedestrians and vehicles meet, curves, ramps, etc. are prone to safety accidents.
The standard screen display consists of 3 digits and 7 fields of digital words. The size of the display screen can be customized according to the design drawing, and a dual-color or full-color LED display screen can be selected. Drivers with normal eyesight can recognize the display content at a distance of 150m under non-speeding conditions; the LED color-changing speed can be set;
- Datasheet
1) Power: maximum 3W, current less than 0.25A
2) Internal speed measurement accuracy: 0.1km/h
3) Antenna type: panel antenna
4) Lens Type: Accurate Ground Reflection
5) Polarity: positive cycle
6) Beam width: 5.5 degrees
7) Radar frequency k-band (24G)
8) Detectable distance: 10~399m
9) Response time: 10ms
10) Output power: 15W LED display:
The basic steps of the radar speed LED Sign system work:
(1) The vehicle enters the detection area of the radar;
(2) Microwave radar detects the speed of the vehicle;
(3) The display controller controls the LED display to display the speed of the vehicle;
(4) If multiple vehicle speeds are detected, the highest speed will be displayed;
(5) If the detected vehicle speed is lower than the speed limit, the green display will be used to detect the vehicle speed
(6) If the detected vehicle speed is greater than the speed limit, the detected vehicle speed will be displayed in red;
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How do radar speed signs work with camera?
The radar speed measurement LED SIGN measures the speed of the mobile object through a microwave. The microwave emitted by the radar is scattered, and the target in the irradiation area will form a microwave reflection, thereby calculating the detected detection rate. Real -time speed of the vehicle.
1. According to the actual measurement requirements, the radar speed measurement LED screen is divided into two working modes:
(1) Static working mode
In other words, radar is still, not on the mobile patrol cars, detect the oncoming cars or moving cars in the same direction.
(2) Dynamic working mode
In the movement, the radar is usually in the mobile patrol car to detect the car that comes on the front or the car moving in the same direction. In dynamic working mode, testing is generally divided into reverse measurement and the same direction measurement. Reverse measurement refers to the opposite direction of the test target to the movement of the patrol vehicle; the same direction measurement means that the test target is the same as the movement direction of the patrol vehicle.
Using different test status, the radar speed measurement LED screen uses different arithmetic rules, but the radar itself is not easy to determine the direction of the target. The previous radar speed measuring meter could not determine the movement direction of the target due to technical restrictions. Therefore, when there are two cars in the measurement area in the same direction and opposite direction. The radar cannot determine which car the test is. With the development of technology, some new type of speed measuring radar can recognize the direction of the target’s movement, which greatly improves the reliability and credibility of testing.
Radar speed LED screen principle: 1. In fact, using a camera at the intersection to shoot the driver through the red light, many technologies can be achieved. There are no uniform standards and methods in this regard, and the design and construction unit of the bid is completely valued; 2. It can usually be triggered by radar, inductive coils or image recognition. When using a radar trigger mode, when the red light is on, a radar area is formed in front of the parking line. When there is a car, start the electronic shutter to take pictures, and then the radar speed test may work; Under the road. When the car runs through the red light, the inductive coil starts the electronic shutter to take pictures. When using image recognition technology, use the white line of the ground as the alert area. When there is a car through the red light, the camera is triggered after blocking the white line of the ground. 4. Due to different technologies, no equipment can fully predict the red light to take pictures. Because only radar or laser technology is used for speed measuring, the radar speed meter can be predictable.
1. The radar LED screen measures the radial speed of the target vehicle, but in practice, there is always angle α between the driving direction of the target vehicle and the radial. Theoretically, the smaller the angle α, the better, but due to the restrictions of the radar working distance (generally 800 meters to 1000 meters) and the impact of other vehicles, the general control angle is about 5 ° on both sides.
2. It is best to start measurement on a flat road. The speed of the patrol vehicle should not exceed 50 kilometers per hour. At the same time, pay attention to the short distance in front of the short distance and there must be too much reflective board and industrial interference.
3. When the radar is fixed, it should be erected along the right side of the road, and the antenna is about 0.6 meters from the ground. And keep the antenna launch direction parallel to parallel.
4. When used in fixing, it can generally be measured in two directions. However, when there are many vehicles, it is advisable to measure the target in the front direction (that is, far from the radar launch direction), and the operating distance should be reduced to avoid being affected by other vehicles.
5. The microwave beams from the LED radar speed screen have a certain divergence angle. Be sure to pay attention to the impact of other vehicles when using. The beam reflected by the car is much stronger than the beam of the ground reflection, so the speed displayed on the screen is not the speed of the patrol vehicle relative to the ground, but the speed of the patrol car relative to the truck. At this time, the data on the target car display cannot be recorded. In addition, if the fast -moving vehicle exceeds the patrol vehicle, the data on the target vehicle display cannot be recorded.
6. Metal reflection microwave ability is strong. When using radar on a patrol car, pay attention to the impact of large metal signs and metal guardrails.
7. High -voltage lines, radio tower and vehicle ignition will cause interference to radar. Users must observe at any time to eliminate the impact of interference.
8. When it is in the rain, snow, and fog, the radar working distance should be shortened, and the data should be observed carefully; please do not open the equipment during heavy rain and heavy snow.
9. Don’t disassemble the radar speed meter at will.