Heart rate sensing signal receiving chip IRS2092STRPBF It is a special chip for receiving and processing the output signal of heart rate sensor. It is usually used for heart rate monitoring equipment in the field of infrared remote control, such as smart bracelets, smart watches, etc.
The main function of the heart rate sensing signal receiving chip is to receive infrared light signals, convert them into digital signals, and conduct signal processing and analysis to obtain the user's heart rate data. It usually consists of infrared receiver, amplifier, filter, analog-to-digital converter and digital signal processor.
The infrared receiver is the core component of the heart rate sensor signal receiving chip, which can receive the infrared light signal reflected by the user's skin surface. The intensity and frequency of the infrared light signal are related to the heart rate, so the infrared receiver needs to have the characteristics of high sensitivity and high precision. It usually uses photodiode or phototransistor as photosensitive element, and converts infrared light signal into voltage signal through amplification and filtering of photocurrent.
The amplifier is used to amplify the voltage signal output by the infrared receiver to increase the signal strength and stability. The amplifier is usually realized by operational amplifier or differential amplifier, which can adapt to different infrared signal strength and frequency by adjusting the magnification and gain.
The filter is a circuit used to remove noise and interference from the output signal of the infrared receiver. Since the heart rate sensing signal is usually weak and vulnerable to interference such as ambient light, it is necessary to filter the signal to improve the clarity and stability of the signal. The filter is usually realized by band-pass filter or digital filter, and the appropriate filtering frequency and filtering method can be selected according to the actual needs.
A/D converter is a circuit used to convert analog signals into digital signals. The heart rate sensing signal receiving chip needs to convert the analog signal output by the infrared receiver into a digital signal for subsequent digital signal processing and analysis. The analog-to-digital converter is usually realized by SAR or Delta Sigma, which can achieve high-precision and high-speed analog-to-digital conversion.
Digital signal processor is the core component for processing and analyzing digital signals. It can perform digital filtering, data calculation, power spectrum analysis and other operations on the heart rate sensing signal to extract the user's heart rate data, and perform corresponding algorithm processing and display. Digital signal processors usually have strong computing and storage capabilities, and can implement complex signal processing and analysis algorithms.
The application of heart rate sensing signal receiving chip in the field of infrared remote control mainly includes heart rate monitoring, motion monitoring and sleep monitoring. By receiving the user's heart rate signal, you can monitor the user's heart rate changes in real time to provide health management, exercise guidance and other functions. At the same time, it can also judge the movement state and sleep quality of users by analyzing the changes of heart rate signals to provide personalized movement and sleep suggestions.
In a word, the heart rate sensor signal receiving chip plays an important role in the field of infrared remote control. By receiving and processing the signal output from the heart rate sensor, it can monitor and analyze the user's heart rate, and provide users with health management, exercise guidance and other services.
