【摘要】 设计了一种新型的无线数据采集系统。该系统由下位机、上位机和PC机3部分组成,采用LPC2131ARM7微控制器作为下位机和上位机的主控制器;无线收发电路工作频率为433MHz,发射功率为5dBm,接收灵敏度为-100dBm,无线数据传输速率为9600bps;具有8路10位和2路16位A/D转换通道。介绍了下位机和上位机的电路结构、数据采集处理程序和无线数据收发程序的流程图、数据存储程序和PC机程序的编写方法。该系统适合工业控制和医疗系统等无线数据采集与传输的应用。更多还原

【Abstract】 A wireless data collection system design based on LPC2131 and IA4421 is introduced. The system consists of three parts:the slave device, host device and PC. LPC2131 ARM7 microcontroller is used as the slave device and host device’s main controller. RF transceiver circuits operate at 433 MHz, the transmitting power is 5 dBm, the receive sensitivity is -100 dBm, the wireless data transfer rate is 9 600 bps. It has eight 10-bit and two 16-bit A/D conversion ports. One host device can perform wireless communications with 16 slave devices in the system. The data collection update rate can achieve 0.2 ms. The bit error rate is not more than 1×10-4. The circuit configuration of slave device and host device, the flow chart of data collection program and RF transceiver program, the compile techniques of data memory program and PC program are introduced. The wireless data collection system is suitable for medical system and industrial automation.更多还原