Provided is a driver warning system capable of enhancing safety. A bicycle includes: a first transmission circuit for transmitting first ultrasonic waves; a first reception circuit for receiving second ultrasonic waves; a calculation circuit for detecting the presence/absence of an object from the second ultrasonic waves; and a second transmission circuit for transmitting third ultrasonic waves. The driver wears a second housing having a second receiving circuit for receiving the third ultrasonic waves. The calculation circuit comprises: a first selection circuit for selecting, at different timings, a potential corresponding to the second ultrasonic waves; a plurality of signal holding circuits for holding the potential corresponding to the second ultrasonic waves; a second selection circuit for selecting any one of the plurality of signal holding circuits; and a signal processing circuit into which is input the signal selected by the second selection circuit and output. The second selection circuit generates a signal in which the second ultrasonic waves are delayed by selecting the plurality of signal holding circuits at different timings. The third ultrasonic waves generated on the basis of the signal are transmitted to the second housing.
提供一种能够提高安全性的驾驶员报警系统。自行车包括发射第一超声波的第一发射电路、接收第二超声波的第一接收电路、从第二超声波检测出物体有无的运算电路及发射第三超声波的第二发射电路。驾驶员穿戴包括接收第三超声波的第二接收电路的第二外壳。运算电路包括以不同时序分别选择对应于第二超声波的电位的第一选择电路、保持对应于第二超声波的电位的多个信号保持电路、选择多个信号保持电路中的任一的第二选择电路及被输入由第二选择电路选出并输出的信号的信号处理电路。第二选择电路以不同时序分别选择多个信号保持电路来生成拖延了第二超声波的信号。将根据该信号生成的第三超声波发送到上述第二外壳。
DRIVER WARNING SYSTEM
驾驶员报警系统
2021-05-14
Patent
Electronic Resource
Chinese
Driver warning system Sudden sleep warning system
British Library Conference Proceedings | 1995
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