Automatic dynamic overall dimension measuring device for vehicles

The utility model belongs to the measurement technical field, and particularly relates to an automatic dynamic overall dimension measuring device for vehicles. The measuring device comprises a ranging sensor set, a signal processing module, a computer data acquisition system and a computer software processing module, wherein the ranging sensor set comprises a height measuring sensor, a width measuring sensor and a length measuring sensor; the length measuring sensor comprises an infrared curtain sensor and gleam infrared positioning switches; and the transmitting terminals and the receiving terminals of the gleam infrared positioning switches are mounted relatively and equidistantly arranged on two sides of a laneto be detected. By virtue of the gleam infrared positioning switches, not only is the security guaranteed, but also a larger fan-shaped mirror side can be formed with the help of the combination of transmitting and receiving infrared light gleam, so that the blind zone of the maximum long edges at th