发明名称 |
CONNECTION DIAGNOSIS SYSTEM FOR ANTENNA MOUNTED ON VEHICLE, OPTICAL COMMUNICATION SYSTEM MOUNTED ON VEHICLE, AND DIAGNOSIS PROGRAM |
摘要 |
<P>PROBLEM TO BE SOLVED: To suppress cost increase in an optical beacon by realizing inspection of connection status of an antenna mounted on a vehicle regardless of communication procedures specified by the VICS(Vehicle Information Communication System). <P>SOLUTION: The program diagnoses connection status of an optical beacon antenna and an optical beacon transceiver by a computer mounted on the vehicle and is provided with a High/Low check step (S32) which checks High/Low status of an input signal from a receiving port in a specified timing, a High/Low count step (S34 to S37) which count the number of High/Low of the input signal switching the output signal to High/Low to a transmitter port according to the above check result, and a determining step (S40) which determines that the connection status is normal when the count result is over a specified value or over a specified ratio after the High/Low count steps are executed specified number of times. <P>COPYRIGHT: (C)2004,JPO |
申请公布号 |
JP2004007341(A) |
申请公布日期 |
2004.01.08 |
申请号 |
JP20020232607 |
申请日期 |
2002.08.09 |
申请人 |
DENSO CORP |
发明人 |
UKAI ATSUSHI |
分类号 |
G08G1/09;G01S1/70;H04B10/07;H04B10/11;H04B10/114;H04B10/524;H04B10/54;H04B17/00 |
主分类号 |
G08G1/09 |
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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