Comparison of Radio Frequency Technology and Infrared Technology
When the elderly use nightlights, the first problem is to look for switches, and the remote control solves the inconvenience of the aging looking for switches.
Many remote lighters on the market use infrared remote control, but infrared remote control has numerous disadvantages.
First of all, infrared rays have strong directionality and cannot penetrate obstacles such as walls, furniture, and human bodies. That is, there must be not any obstruction between the above-mentioned obstacles between the remote controller and the device. Secondly, the remote control angle is limited. The remote control cannot be remotely controlled if it is too far away from the receiver;
Also, infrared is only suitable for one-way communication. Two-way communication is difficult to implement and costly.
For the above shortcomings of infrared, RF wireless remote control has the following four advantages:
1) The radio frequency transmitter uses hundreds of megahertz of radio waves instead of infrared light as a carrier of remote control information. Because it has no direction,
Can penetrate or bypass the obstacles, transmission distance, anti-interference ability and other advantages, the use of infrared remote control of the various limitations exists. For example, home appliances will no longer be constrained by the angle of the remote control, but will be completely determined by the user’s preferences. It now appears that set-top boxes may not be put on the roof of the aircraft.
2) The remote control distance of wireless radio frequency technology is equally far greater than the distance of a normal infrared remote control (a few meters to ten meters). Under the same operating conditions, RF remote control can easily reach tens of meters. According to different application requirements, the remote control can be further extended by increasing the RF output power
3) Wireless RF remote control also makes a very obvious advantage of low power consumption. Infrared remote controllers generally use two AA batteries or batteries, and they are generally replaced every year. The RF remote controller can replace the battery for four years. Because of low power consumption, RF remote control can be even
Button-powered batteries are beneficial for miniaturization of the product and a more stylish look.
4) Using radio frequency remote control, one-way or two-way remote control functions can also serve as easily implemented. More importantly, semiconductor manufacturers provide mature radio frequency transceiver integrated circuits and provide detailed reference designs. Users can design their own RF remote controllers without involving radio frequency expertise.