Many netizens are asking whether the electronic dog is a radar velocimeter? My answer: there is a world of difference between the two. Then many people will ask what is the difference between speedometer and electronic dog? Here, we will discuss the difference between radar velocimeter and electronic dog.

1. Product definition:

(1) Radar velocimeter, as the name suggests, refers to the radar that measures the speed of objects by transmitting radio waves

(2) The electronic dog can also be called an anti radar speedometer or a safety warning device. It is an on-board equipment composed of hardware system and software system, including radar, GPS positioning, CPU and intelligent speed measurement and early warning system. The main purpose is to use GPS satellite positioning and radar signal retrieval to remind car owners of the existence of speed measuring equipment such as electronic eye or speed measuring radar in advance, so as to prevent fines and deductions for speeding and other violations. It is divided into ordinary e-dog, intelligent e-dog, cloud e-dog, cloud intelligent e-dog, etc.

3. Working principle:

(1) The principle of radar velocimeter is to apply Doppler effect, that is, the wave received by electromagnetic moving object has frequency shift effect. The radar velocimeter calculates the moving speed of the measured object according to the frequency shift of the received reflected wave.

(2) The principle of electronic dog is to give voice reminder to the driver by receiving the electromagnetic wave sent by the radar speedometer. In short, the electronic dog can not measure the speed, but can only detect the existence of the radar speedometer. When the car is within a certain range of the radar speedometer, the electronic dog will detect the radar speedometer to remind the driver of the speed limit and prevent the driver from being caught for speeding.

The above is the difference between radar velocimeter and electronic dog shared by De'an technology.