| 摘要 |
<p>PURPOSE: To provide a radio communication processing system which reduces processing errors due to conventional frequent interference with a precedent and a following vehicle and can correctly communicate with radio cards mounted on vehicles. CONSTITUTION: When the head of a entering vehicle is detected by a CPU 31 with the output signal of an optical sensor device 4, a communication control part 35 starts communicating with the radio card 3 mounted on the vehicle by radio through an antenna 10. Further, the CPU 31, by placing shaft number counter 34 in operation by a shaft detection signal from the step plate 9, detects the number of the shafts of the vehicle and stops the radio communication with the radio card 3 mounted on the vehicle once detecting the 2nd shaft.</p> |
