遥控车库门遥控距离的因素
Factors of remote control distance of remote garage door
1、发射功率：发射功率大则距离远，但耗电大，容易产生干扰；
1. Transmitting power: if the transmitting power is high, the distance will be far away, but the power consumption is large, and the interference is easy to occur;
2、接收灵敏度：接收器的接收灵敏度提高，遥控距离增大，但容易受干扰造成误动或失控；
2. Receiving sensitivity: the receiver's receiving sensitivity is improved, and the remote control distance is increased, but it is easy to be disturbed and cause misoperation or out of control;
3、天线：采用直线型天线，并且相互平行，遥控距离远，但占据空间大，在使用中把天线拉长、拉直可增加遥控距离
3. Antenna: linear antennas are used, and they are parallel to each other. The remote control distance is far, but it takes up a lot of space. Lengthening and straightening the antenna in use can increase the remote control distance
4、高度：天线越高，遥控距离越远，但受客观条件限制；
4. Height: the higher the antenna, the farther the remote control distance, but limited by objective conditions;
5、阻挡：使用的无线遥控器使用国家规定的UHF频段，其传播特性和光近似，直线传播，绕射较小，发射器和接收器之间如有墙壁阻挡将大大打折遥控距离，如果是钢筋混泥土的墙壁，由于导体对电波的吸收作用，影响更甚。
5. Blocking: the UHF frequency band specified by the state is used for the wireless remote control. Its propagation characteristics are similar to that of light, and the linear propagation and diffraction are small. If there is a wall blocking between the transmitter and the receiver, the remote control distance will be greatly reduced. If the wall is reinforced concrete, the influence will be more serious due to the absorption of electric wave by the conductor.