Design of the intelligent energy-saving cardiotachometer based on Mbed

The Journal of Engineering

Yuxiang Guo¹  Chenhui Zhu¹ 

[1] Glasgow College UESTC Joint School University of Electronic Science and Technology of China;

关键词: tachometers;    led displays;    cardiology;    low-power electronics;    energy conservation;    biomedical measurement;    wearable device;    battery life;    heartbeats;    led modules;    audio p-type metal oxide semiconductor;    photoelectronic sensor;    pulse signal;    electronic signal;    core microprocessor;    mbed;    photoelectric mode cardiotachometer;    intelligent energy-saving;    light-emitting diode;   

DOI  :  10.1049/joe.2018.9052

来源: DOAJ

【 摘 要 】

In order to deal with the shortcomings of a photoelectric mode cardiotachometer, such as wasting energy and slowly refreshing results, this study mainly focuses on a real-time displayed, portable, low-cost, and energy-saving cardiotachometer. The design is based on the Mbed, which is the core microprocessor, controlled and dispatched by the built-in function. Before filtering and amplifying the electronic signal, the pulse signal is collected by the photoelectronic sensor at the beginning of the whole process of the cardiotachometer. The energy-saving function can be achieved through audio p-type metal oxide semiconductor to switch on and off the light-emitting diode (LED) which is in the sensor. Eventually, the real-time ratio of the heartbeats and the waveforms can be displayed on the two 8 × 8 LED modules at the same time with overall energy-saving of about 50%. This design can be applied in many fields focusing on long battery life and portable, especially as a part of a wearable device.

【 授权许可】

Unknown