摘  要：设计一种基于射频芯片nRF905为无线通信核心的电子天平无线遥测子系统的实现方案，整个系统通过STM32微控制器来控制，由24位超低噪声的模数转换器ADS1232来对称重传感器的模拟信号进行转换，在微控制器内进行数字滤波等一系列处理，把所需要的数据通过SPI接口写到nRF905的寄存器中并发射出去，接收部分接收数据，微控制器再通过SPI接口将nRF905寄存器中数据读出，并通过UART发送到计算机用于显示和分析，实现一台计算机来同时操作多个称重台。
关键词：电子天平；STM32微控制器；ADS1232模数转换器；nRF905芯片；CN3702芯片
中图分类号：TP212.1；TH715.1+16；TP274+.2；TP391.45   文献标志码：A    文章编号：1674-5124（2013）05-0099-03
Implementation of wireless telemetry subsystem for electronic balance
LI Wen-bao， CHEN Jian-zheng， DENG Fei
（Traction Power State Key Laboratory，Southwest Jiaotong University，Chengdu 610031，China）
Abstract: This paper designs an implementation taking the RF chip nRF905 as wireless telemetry subsystem for elecronic balance. The controller of entire system is STM32 microcontrollers. The low-noise analog-to-digital converter ADS1232 converts the analog signal of the weighing sensor. The required data are writtern to the nRF905 register through the SPI interface and launch out after digital filtering. After the receiving terminal gains the data， the microcontrollers will send the data read out from nRF905 register through the UART to the computer for display and analysis. This can be operated simultaneously from one computer to multiple weighting units.
Key words: electronic balance； STM32； ADS1232； nRF905； CN3702