ECG Sampling System Based On ARM And Bluetooth Communication

With the improvement of wireless communication and new request in medical treatment, an electrocardiogram(ECG) wireless transmission system based on embedded system LPC2290, is developed for long-distance first aid or home healthcare.This system uses embedded MCU LPC2290 and collects the ECG data through former amplifier circuit, the system can storage, display data by flash storage and LCM. Besides, it can transmit ECG data to PC through Bluetooth interface, Bluetooth Technology is flexible and convenient, so it is fit for short-distance communication.Detailely introduced process and method to develop The former amplifier circuit,The display of LCM, Self-adopted filter and charator detection of ECG, Bluetooth communication, The integrated debug of hareware and software in this paper. Firstly, the whole system is designed from the point of performance. with method of module;After that, each one is introduced emphasesed on the former amplifier circuit and the display of LCM; Secondly, Self-adopted filter and character detection of ECG, Bluetooth communication are two keypoints of this article, FIR filter and LMS arithmetic are used to eliminate noise of 50Hz and baseline-drift., aftert that, The QRS is detected for former analyzing; The start system and protocol structure of the Bluetooth are introdued on the basis of diffuse communication. This system use Bluetooth module ROK101 008 to transmit ECG data on the layer of UART to PC, the HCI communication flow is also designed.Finally, the integrated debug of hareware and software is introduced. The disply of RT12864M and ECG signal with VC++6.0 are given. This system can work effectly.