期刊论文

Design and Fabrication of Embedded Wireless Monitoring System Based on Bluetooth Low Energy Transmission for Potentiometric Sensors

Xiao Zhong-Liang

中文

分析化学

0253-3820

2019

47

2

229-236

10.19756/j.issn.0253-3820.181684

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31527803, 21545010]; Science and Technology Service; net (STS) Program of the Chinese Academy of Sciences [KFJ-SW-STS-173]

本校为第一且通讯机构

设计并制作了一种可用于电位型传感器的小型嵌入式无线监测系统,此系统以精密双路运放 TLC4502为前置放大器,低功耗蓝牙(BLE)芯片CC2541作为主控制器,主控制器集成14位模数转换器(ADC)。此系统使用BLE开发应用程序(App),与CC2541建立蓝牙连接,实现对传感电位的无线实时读取。监测系统软件部分由嵌入式开发软件IAR Embedded Workbench在BLE-CC254X-1.41协议栈基础上开发。为验证系统可靠性与精度,采用精密稳压电源进行模拟电位采集测试,并使用pH复合电极对pH值变化进行监测。测试结果表明,此系统能对电位进行实时测量,信号放大3倍,精度达到0.4 mV,对pH值变化能快速输出一致性响应,监测响应的线性...

A small embedded wireless monitoring system for potentiometric sensors was designed and fabricated. The system employed a dual precision op amp of TLC4502 as the preamplifier and a bluetooth low energy ( BLE) chip of CC2541 as the main controller, and the main controller integrated 14 bits analog to digital convertor ( ADC). The system used the BLE development application program ( App) to establish a Bluetooth connection with the CC2541 14 wireless real-time reading of sensing potentials. The monitoring system software was developed on the basis of a BLE-CC254X-1. 41 protocol stack by the emb...