Vehicle detector
专利汇可以提供Vehicle detector专利检索，专利查询，专利分析的服务。并且PURPOSE: To inhibit adjacent closed sections from being indicated as "vehicle present", by preventing a logical circuit for the succeeding closed section from going into a state "vehicle present" until vehicle detector elements of logical circuits of both the closed sections go into a state "vehicle absent".
CONSTITUTION: A plurality of loop transmission lines LA, LB, LC are provided along a train track 1, which is divided into a plurality of closed sections AT, BT, CT by the loop transmission lines. A check-in signal generator 3 and a transmitter 4 for transmitting a check-in signal to the loop transmission lines are mounted on each train 2, which runs while transmitting the check-in signal. The loop transmission lines are connected to the logical circuits 5AW5C, which have detector circuits 6AW6C consisting of filter, amplifier, level detector circuit, etc., train detecting relays ATR, BTR, CTR and closing protection circuits 7AW7C. A combined circuit of relay contacts corresponding to the train detecting relays is operated to prevent that the signal received from the train having reached the border between both closed sections is counted as if received from two trains
COPYRIGHT: (C)1979,JPO&Japio，下面是Vehicle detector专利的具体信息内容。
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