会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • Passenger detection system
    • 乘客检测系统
    • US06208249B1
    • 2001-03-27
    • US09146231
    • 1998-09-03
    • Takashi SaitoMasahiro OfujiKazunori Jinno
    • Takashi SaitoMasahiro OfujiKazunori Jinno
    • G08B1326
    • B60R21/01532
    • A passenger detection system comprises an antenna electrode, an oscillation circuit, a current detection circuit, a phase difference detection circuit, and a control circuit. The antenna electrode is placed on the upper side of a seat. The oscillation circuit generates a high frequency low voltage oscillation signal in order to generate a weak alternating electric field around the antenna electrode. The current detection circuit detects a transmission current which passes between the oscillation circuit and the antenna electrode according to the weak alternating electric field which is generated around the antenna electrode. The phase difference detection circuit detects the phase difference between the oscillation signal supplied from the oscillation circuit and an output signal which is supplied to the antenna electrode. And the presence or absence of a passenger seated on the seat is judged by the control circuit based on the outputs of the current detection circuit and the phase difference detection circuit. Especially, the passenger detection system needs only one antenna electrode, therefore judgment on the presence or absence of a passenger seated on the seat can be executed with simplified circuit composition and low cost.
    • 乘客检测系统包括天线电极,振荡电路,电流检测电路,相位差检测电路和控制电路。 天线电极放置在座椅的上侧。 振荡电路产生高频低压振荡信号,以产生天线电极周围的弱交变电场。 电流检测电路根据在天线电极周围产生的弱交变电场来检测通过振荡电路与天线电极之间的传输电流。 相位差检测电路检测从振荡电路提供的振荡信号与提供给天线电极的输出信号之间的相位差。 并且由控制电路基于电流检测电路和相位差检测电路的输出来判断坐在座位上的乘客的存在或不存在。 特别地,乘客检测系统仅需要一个天线电极,因此可以以简化的电路组成和低成本来执行坐在座椅上的乘客的存在或不存在的判断。