SENSOR OF VEHICLES FOR CONTROLLING TRAFFIC

PURPOSE: A sensor of vehicles for controlling traffic is provided to reduce the ratio of trouble to minimum by preventing the generation of a short circuit by transformation of the road in advance. CONSTITUTION: A sensor of vehicles for controlling traffic includes a signal generator(10), a radar mo...

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Bibliographic Details
Main Author WOO, HYUN DONG
Format Patent
LanguageEnglish
Korean
Published 07.05.2001
Edition7
Subjects
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Summary:PURPOSE: A sensor of vehicles for controlling traffic is provided to reduce the ratio of trouble to minimum by preventing the generation of a short circuit by transformation of the road in advance. CONSTITUTION: A sensor of vehicles for controlling traffic includes a signal generator(10), a radar module(13) with an antenna(22) and a signal managing instrument(20). The signal managing instrument(20) includes a band pass filter(34), the first voltage comparer(36), a control logic portion(54), a count portion(40), a digital/analog converter(42), a low band pass filter(46), the second voltage comparer(50) and an output interface(52). The band pass filter(34) amplifies the specific frequency band and controls the remaining frequency band of the signal received in the radar module(13). The first voltage comparer(36) fixes the wave form of the bit frequency signal, which passed the band pass filter(34). The control logic portion(54) outputs the control signal for counting and remembering the bit frequency signal only in the sending/receiving frequency section. The count portion(40) counts the bit frequency of the fixed wave form output from the first voltage comparer(36). The digital/analog converter(42) converts the digital signal of the result value counted in the count portion(40) into the analog signal. The low band pass filter(46) is connected to the digital/analog converter(42) and removes the error generated in counting. The second voltage comparer(50) compares the signal, which passed the low band pass filter(46), with the reference voltage. The output interface(52) sends the signal compared in the second voltage comparer(50) to the outside.
Bibliography:Application Number: KR19990043799