What are the wireless remote control classification?
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Author:cj36
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Published time: 2017-05-13
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With the progress of society, the application of wireless remote control has also expanded to a very wide area, there are two common remote control, one is commonly used in household appliances infrared remote control, the other is the burglar alarm equipment, garage Doors, electric doors and windows, car alarm, and so commonly used wireless electronic signal remote control; both have different characteristics and advantages, the application of the field are also different; wireless remote control in the use of which basic types of wireless? Remote control industry leader - Shenzhen Chuang Technology - to answer your questions!
With the progress of society, the application of wireless remote control has also expanded to a very wide area, there are two common remote control, one is commonly used in household appliances infrared remote control, the other is the burglar alarm equipment, garage Doors, electric doors and windows, car alarm, and so commonly used wireless electronic signal remote control; both have different characteristics and advantages, the application of the field are also different; wireless remote control in the use of which basic types of wireless? Remote control industry leader - Shenzhen Chuang Technology - to answer your questions!
1, infrared remote control commonly used carrier frequency of 38kHz, which is used by the transmitter 455kHz crystal to decide. In the transmitter to the integer frequency of the crystal, the frequency coefficient is generally taken 12, so 455kHz ÷ 12 ≈ 37.9kHz ≈ 38kHz. There are also some remote control system using 36kHz, 40kHz, 56kHz, etc., generally by the oscillation frequency of the crystal oscillator to determine the advantages of infrared remote control will not affect the surrounding environment, do not interfere with other electronic equipment. The disadvantage is that it can not penetrate the wall, wireless remote control and receiver can not have any barrier between the control can be short distance and the sensitivity is not high.
2, the radio remote control commonly used frequency of 315mHz or 433mHz, wireless remote control using the state of the open frequency band, in this band, the transmission power is less than 10mW, coverage is less than 100m or not more than the unit range, Through the "Radio Management Committee" approval and free use. China's open band provides 315mHz, and Europe and the United States and other countries for the 433mHz, so exports to the country's products should use 433mHz remote control; radio remote control commonly used encoding there are three types, namely, fixed code, learning code and rolling code two Type, learning code and rolling code is a fixed code upgrade products, rolling code remote control is the highest security, and now where the requirements of high confidentiality, are using rolling coding. The advantages of the remote control remote control can be up to 100 meters long, low power can reach up to 100 meters, high power can reach 3000 meters, greatly improving the ease of operation and safety, and not subject to block interference, cost savings effectiveness. Its shortcomings are susceptible to the impact of peripheral electronic equipment.
