摘要
采用远距离射频技术和单片机技术,设计公交车自动报站系统。当射频卡(公交车站)进入发射天线(公交车)工作区域时产生感应电流,射频卡获得能量被激活;射频卡将自身编码等信息通过卡内置发送天线发送出去;系统接收天线接收到从射频卡发送来的载波信号,经天线调节器传送到阅读器,阅读器对接收的信号进行解调和解码然后送到单片机主系统进行相关处理;单片机通过判断后识别出车站身份,然后将相应的语音信息通过扬声器读出,从而完成自动报站。整个过程无需驾驶员参与,既减轻了驾驶员的工作强度,又确保了公交车的安全性和报站的准确性,该设计具有很高的实用价值。
Adopting remote RFID technology and MCU,an automatic bus-stop reporting system is designed.When RFID card enters into the working area of the antenna（the bus）,current is induced,then RFID card gains energy to be activated.The information of the RFID card such as its own codes will be sent out through the transmitting antenna built in the card.The receiving antenna receives the carrier signal from the RFID card,and the carrier signal is transferred to reader through antenna tuner.The reader demodulates and decodes the received signals,and then sends them to MCU conducting related process.The MCU identifies the stop identity by judging,and then sends out corresponding voice messages through speakers,thus completing automatic stop reporting function.The whole process eliminates the participation of the driver,not only reduces the working strength of drivers,but also ensures the bus＇s safety and the accuracy of the stop reporting.This design has high practical value.
出处
《电子技术（上海）》
2011年第8期42-43,共2页
Electronic Technology
关键词
自动报站
射频技术
单片机
语音
automatic stop reporting
RFID technology
MCU
voice
