发明名称 |
DEVICE FOR MEASURING TRAFFIC VOLUME |
摘要 |
PROBLEM TO BE SOLVED: To provide a traffic volume measuring device using magnetic sensors capable of accurately measuring traffic volume regardless of the speed of a vehicle. SOLUTION: This device has a 1st magnetic sensor 2 arranged in the neighborhood of a road and a 2nd magnetic sensor 3 arranged along the advancing direction of a vehicle and separated from the sensor 2, and is provided with a timer means 10 which outputs a detection signal when outputs of the sensors 2 and 3 become equal to or more than a prescribed value and calculates a period required for passing the vehicle through between the sensors 2 and 3 due to the time difference between the detection signals of 1st and 2nd detectors 7 and 9, and the means 10 outputs a count signal that is also used as a reset signal resetting the detectors 7 and 9 to a counter 11.
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申请公布号 |
JP2001076119(A) |
申请公布日期 |
2001.03.23 |
申请号 |
JP19990253576 |
申请日期 |
1999.09.07 |
申请人 |
ALPS ELECTRIC CO LTD |
发明人 |
SUDOU YOSHIHIRO;OUCHI JUNICHI |
分类号 |
G06M7/00;G08G1/042;(IPC1-7):G06M7/00 |
主分类号 |
G06M7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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