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Common camera erection and working principle

In fact, the camera at the intersection to take pictures of the driver running a red light can be achieved through many technologies. There is no unified standard and method in this regard, and it depends entirely on the construction unit that won the bid. Under normal circumstances, it can be triggered by radar to take a picture, and the induction coil can trigger a picture or trigger a picture through image recognition. When using the radar trigger photographing method, when the red light is on, a radar area is formed in front of the parking line, and when a car passes, the electronic shutter is activated to take pictures. At this time, the radar speed detector may work. When the induction coil is used to take pictures, the induction coil is buried under the road during road construction. When a car runs a red light, the induction coil car starts the electronic shutter to take pictures. When using image recognition technology, the white line on the ground is used as the warning area. When a vehicle runs a red light, the white line on the ground is blocked and the camera is triggered. Due to the different technologies used, no device can predict the red light running to take pictures. Unlike speed measurement, only radar laser technology is used, so radar speed detectors can fully predict speed detection.

2021-11-09

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Flow Velocity Measurement and Principle

It is the indefinite point speed measurement, which is different from the fixed point speed measurement. For example, the movable speedometer and handheld speedometer used by the speed measuring vehicle parked on the roadside can detect the speed of the vehicle through the speed measuring radar machine, freely adjust the direction, and shoot the speeding vehicle from different directions. In other words, either the rear license plate or the front license plate can be photographed. The specific difference is only that the parking position of the speed measuring vehicle is different from the direction of the speed measuring instrument.

2021-11-09

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