Body fat and oximeter design based on BLE technology

1. Introduction to the program

China is accelerating its entry into an aging society, and the prevalence of chronic diseases such as coronary heart disease, hypertension, and diabetes among people aged 65 and older is 3 to 7 times higher than that of people aged 15 to 45, causing a serious shortage of medical resources. It is especially important to monitor chronic diseases and provide medical health protection for the elderly population.

The Ministry of Industry and Information Technology and the Ministry of Science and Technology have separately listed personal medical monitoring and remote diagnosis into the development priorities of the 12th Five-Year Plan, and provided corresponding funding. The Ministry of Health has also initiated and sponsored some cooperative medical service demonstration projects. Within the mobile medical demonstration project; at the same time, mobile internet technology companies have also entered the health care field, launched health management products, applied technologies such as the Internet of Things and cloud computing to health management products, and the monitored health data can be transmitted through wireless technology. Go to portable devices such as mobile phones.

In response to the telehealth market trend, World Peace Group has introduced a body fat and oximeter solution based on Bluetooth 4.0 single mode (BLE) low power technology. Bluetooth 4.0 single mode is BLE (Bluetooth Low Energy), which features lower power consumption, longer battery life, lower cost and longer transmission distance.

2. Functional block diagram

3. Functional Description

1 Body fat signal measurement: Using the analog front end for measuring body fat, the sinusoidal current signal generated by the internal DDS and DAC is output through the filter, applied to the human body between the two measurement terminals, and the electrical signal is obtained, and then the SPI interface is used. Send data to the MCU for data processing;

2 Blood oxygen signal sampling: using the analog front end for measuring blood oxygen, the internal LED is driven to connect the external LED, and the light is emitted. After measuring the object, the data received by the LED is analyzed for analysis and blood oxygen content is obtained;

3 Signal data display: data processing by MCU, and display of real-time waveform changes of body fat, blood oxygen data, and blood oxygen content in LCM;

4 Signal data transmission: Send blood oxygen and body fat data to the Bluetooth device through the BLE module.

This article is selected from the Electronic Consumers Network September "Smart Medical Special" Change The World column, please indicate the source!

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