The invention discloses a method and a device capable of shortening a feeder of a loop
vehicle detector. The method is characterized in that a loop
signal detector is placed beside a road in which a loop is located, the input end of the loop
signal detector is connected with the loop by a short feeder, and the output end of the loop
signal detector is connected with an auxiliary short-range
wireless communication module, wherein the loop
signal detector and the output end of the auxiliary short-range
wireless communication module are located at the same position; the detector inputs digital information of detecting road vehicles by the loop, then outputs the digital information to the auxiliary short-range
wireless communication module; and the auxiliary short-range wireless communication module sends the digital information to a primary short-range wireless communication module on a
road traffic signal controlling
machine. The device disclosed by the invention comprises a loop
signal detector, an auxiliary short-range wireless communication module, a primary short-range wireless communication module and a feeder. The feeder disclosed by the invention is usually several meters in length; the device is simple in installation and maintenance and low in cost; and by using the device disclosed by the invention, the damage on
urban road systems and
urban environment caused by feeder embedding is reduced to the largest degree, the construction cost is saved, and the construction period is shortened, therefore, the device is applicable to various
urban road environments.