Whether a person is healthy or not depends on a person's mental, social and other aspects in a good state. The heart is one of the important organs of the human body. Its role is to promote blood flow and provide adequate blood supply of oxygen and nutrients for organs and tissues. If a heart attack occurs, the health of the human body will be affected. Therefore, there must be a An instrument that can detect the health of the heart. The heart rate tester can detect the heartbeat frequency and judge whether you are healthy. After all, health is a guarantee, and having a healthy body is the wealth of life. But did you know that the function of this instrument is the infrared emitting tube in the infrared pair tube? Next, I will briefly introduce related matters.

　　 It is a sensor composed of an LED light and a photoresistor, which is used to detect the blood flow of the finger, thereby detecting the heart rate. Using Chengguang series infrared transmitters, the heart rate tester can penetrate human cells, but it is not easy to penetrate in the blood, so that the resistance of the photoresistor changes with the pulsation rate of the human body. The change in the resistance of the detector causes the LED lights to flash synchronously to indicate the heart rate of the person.

The luminous body of the heart rate tester is composed of IR light-emitting diodes. It is a miniature SMD packaged IR light-emitting diode. It is made of transparent water plastic and equipped with a flat-top lens. It has high emission power, good insulation, and moisture resistance. Wear resistance, long life and high reliability. In addition, this series of infrared emitting diodes are compatible with red and gas reflow welders and compatible with automatic discharge equipment.

　　 In addition to the infrared pair tube can play a role in the heart rate tester, it can also play a value in the oximeter and other medical equipment.