The world's leading manufacturer of LED optoelectronics industry, Yiguang Electronics Industry Co., Ltd. launched the new ALS-PD50-42C series of ambient light sensors, adopting the 550nm band of green light sensing, low signal calculation error, high output current efficiency, easy to detect heart rate Signal, especially suitable for wearable applications such as sports watches. Figure: Yiguang's ALS-PD50-42C series is an ideal component for heart rate measurement Pure Green Color Led Display,0.56 Inch Grey Face Led Display,2 Digits Grey Face Led Display,0.56 Inch Led Display Wuxi Ark Technology Electronic Co.,Ltd. , https://www.arkledcn.com
In recent years, influenced by the concept of health, the national movement has flourished, and it has paid more attention to health management and exercise efficiency. With the evolution of technology, today's sensors are the most intelligent test methods, with non-invasive light volume principle PPG ( Photo plethysmo gram), the change in current output from the sensor after reflection of the emitted green LED to the sensor, the change in blood flow in the microvessel, and the calculation of the heartbeat frequency signal.
Yiguang ALS-PD50-42C series is the most advanced ambient light sensor. It adopts large photosensitive area design and has a photosensitive area of ​​8.1mm2. It mainly considers the skin contact of the subject and is easily interfered by skin color, tattoo or hair, and increases the sensing. The area can increase the recognition ability, the signal receiving is more intense and stable, and even the mobile or runner can detect the heartbeat frequency in the most real time and conveniently.
The ALS-PD50-42C series products have a 0.8μA current signal output (Vr=5V) under the illumination of 100Lux white LEDs. This excellent photoelectric conversion efficiency can better analyze the light energy signals reflected by the skin surface microvessels. The special coating design effectively reduces the ultraviolet light below 400nm and the infrared light interference above 650nm, and reduces the influence of excessive sunlight during outdoor sports, and the detected result is more accurate. The ALS-PD50-42C series withstand temperatures from -40 ° C to 85 ° C, can be used at 0 to 5 V, and is RoHS, lead-free and halogen-free, which is very suitable for wearable applications such as sports watches. The most lightweight way to extract heart rate information.