When the infrared connector is in use, its receiving distance directly affects the signal reception, so now we need to find out the factors that affect the distance of the infrared emitting tube.

　　 One, related to infrared emission tube

Infrared emission tube chips generally have 10μ, 12μ, 14μ, and the emission angle is 30, 45, 60 degrees. The larger the chip, the greater the emission power, and the smaller the angle, the more concentrated the infrared. So if you want to choose long-distance infrared emission, you should choose Big chip, small angle. The domestically-made chips have a high Vf value and can withstand much lower current values. This is also prone to dead lights, and the domestically-made chips have a large attenuation.

　　 The launch distance of the launcher is inversely proportional to the launch angle and proportional to the size of the launch tube's wafer.

　　 2. Related to the infrared receiver

　　 The sensitivity and anti-interference of the infrared receiver are directly related to the receiving distance of the infrared receiver, and are closely related to the remote control distance. At present, the infrared receivers on the market are all the carrier 38KHZ, what is the difference between each one?

　　 3. It is related to the use environment of the infrared emitting tube

　　Different materials, different packaging processes, and different chips make infrared receivers have the following differences: sensitivity, anti-interference ability, rated voltage, positive and negative current. Sensitivity and anti-interference ability are factors that affect the connection distance. There are also domestic and imported infrared receiver chips on the market. The prices are basically domestic chips. In addition to the price difference between domestic and imported chips, the main performance differences are also obvious, such as sensitivity, anti-interference ability and long-term stability. Not as good as imported chips.

　　 If the infrared remote control is used outdoors, the light interference may be stronger. It is recommended to use a slightly larger infrared transmitter and use a higher quality infrared receiver in a strong electromagnetic interference environment.