Descrição
艾谱柯微心率传感器EM7028可替代原相：PAH8001/PAH8002/PAH8003
主要应用在智能手机，平板电脑，智能穿戴，智能定位手表，运动手环，计步器，运动耳机，运动眼镜，儿童早教机、智能运动器材，医疗器械等产品上.
EM7028 series is a low-power I2C interface module including Heart Rate Sensor(HRS) and internal LED Current Drivers with 2 Green LEDs. It can work in both continuous mode and pulse mode. It is designed for applications of Heart Beat Rate detection ESP. such as smart watch etc.
Heart Rate Sensor in continuous mode is designed to monitor heart rate by optical detection. A 16-bit ADC detects HR constantly with adjustable gain and resolutions.
Heart Rate Sensor in pulse mode is designed to monitor heart rate by optical detection in low-power mode. It also acts as a proximity sensor with rejection of ambient light noise. In order to remove component variations and eliminate offset caused by IR reflection, 2 registers are specially defined for compensation and high dynamic range of detection.
HRS in continuous mode stores ADC output result into HRS1 registers, while HRS in pulse mode stores ADC output result into HRS2 registers. All pixels are controlled by analog-MUX in different modes.