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    电动卷帘门远距离操作故障原因
    来源:http://www.jnjqjc.com   时间:2017-5-8 16:23:44
    电动卷帘门远距离操作故障因素主要有如下几点:
    The main factors of remote operating failure of electric shutter door are as follows:
    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: the power of transmitting power is far away, but the power consumption is large enough to cause interference.
    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;
    Receiving sensitivity: the receiver's receiving sensitivity increases, the remote distance increases, but it is easy to be disturbed 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: using linear antenna, and parallel to each other, remote control distance, but to occupy the space is large, antenna, straighten long can increase in the use of remote control distance;
    4、高度:天线越高,遥控距离越远,但受客观条件限制;
    Height: the higher the antenna, the farther away from the remote control, but under objective conditions.
    5、阻挡:目前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, block: currently used in wireless remote control using the UHF frequency bands stipulated by the state, its propagation characteristics and light approximation, linear propagation, diffraction is small, if there is a wall block between transmitters and receivers will be greatly discounted remote control distance, if it is reinforced concrete walls, due to the effect of absorption of the conductor to the waves, is even more impact.
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