【摘要】 应用基于蓝牙技术的无线收发芯片nRF401,设计了车辆运行工况记录装置的数据采集前端和便携机。运用单片机C51语言编程,设计了记录装置的配套发送和接收软件,并建立了无线数据采集系统。试验结果表明,采用nRF401芯片进行数据传输,记录装置便于携带,且传输效率高,最高通信速率可达19.2kB.s-1;该系统可实现1个便携机对应多个用户,不仅使用成本降低,而且可构成无线数据采集网络,便于集中采集和控制。更多还原

【Abstract】 Applying the wireless transceiver chip nRF401 based on bluetooth technique, the data acquisition system and portable device of recorder were designed. By programming language C51, transmit software and receive software were developed. The results indicate that it is convenient and efficient to transmit data by nRF401, and one portable device can be shared by many users, which not only can reduce the cost, but also is easy to constitute the network of wireless data collecting. Its maximum speed for transmiting data can reach 19.2 kB·s^-1. 1 tab, 5 figs, 6 refs.更多还原