摘要
介绍的无线抢答计分器,具有8路无线抢答判断功能,无须布线,具有移动方便灵活等优点。选用专用的编解码芯片PT2262/2272构成数据加解密,用FM调制电路构成无线发射器,用FM解调芯片MC3362构成无线数据接收器,构成了无线编解码抢答电路,使得系统在使用时更可靠,性能价格比方面的指标也得到了加强。同时采用AT89C52单片机为主控芯片,能实时控制、显示现场抢答情况。另外还预留出RS-232串行接口,以便与PC机通讯,提高抢答器的功能。
Introduces the wireless machine of grabbing for replying and displaying theresult, which has the function of judgment with 8 channels of grabbing for replying. It does need to distribute the electrical wire, so it is moved expediently. Chooses the familiar coding-decoding chip PT2262/2272 that forms the data coding-decoding circuit. The wireless emitter is composed of the FM modulate circuit, and the wireless receiver is composed of the FM demodulation chip MC3362. Chooses the AT89C52 SCM as main controlling chip, which can control by real time and display the result currently. Reserves RS-232 to communicate with PC to enhance its function.
出处
《浙江工程学院学报》
2004年第2期107-111,共5页
Journal of Zhejiang Institute of Science and Technology
