卷闸门的使用可以和墙壁起到水平分割的作用。
The use of roller shutter can play the role of horizontal division with the wall.
从卷闸门遥控器的接受部分，我们可以将其分为超外差和超再生两种方式，超外差式解调电路同超外差收音机相似，是设置一本机振荡电路产生振荡信号，同接收到的载频信号混频后，得到的中频信号，经中频放大和检波，然后解调出数据信号。超再生解调电路也被称为超再生检波电路，实际上就是在间歇振荡状态下的再生检波电路。在卷帘门遥控器的配置上也常常采取这两种方式。检查井钢模具 隔离墩模具 隔离墩钢模具 流水槽模具 U型槽模具 螺杆启闭机 卷扬式启闭机 铜雕佛像
From the receiving part of the rolling gate remote controller, we can divide it into superheterodyne and superheterodyne regeneration. The superheterodyne demodulation circuit is similar to the superheterodyne radio. It is to set a local oscillation circuit to generate an oscillation signal, mix it with the received carrier frequency signal, obtain the medium frequency signal, amplify and detect it through the if, and then demodulate the data signal. Super regenerative demodulation circuit is also called super regenerative detection circuit, which is actually a regenerative detection circuit in intermittent oscillation state. These two methods are often used in the configuration of the remote controller of the rolling shutter door.
卷帘门遥控器配置中常用的载波频率液压钢坝  为433mHz和315mHz，遥控器使用的载波频率是国家规定的开放频段，在这一频段内，发射功率小于10mW和覆盖范围小于100m，只要不超过本单位范围，都不必经过“无线电管理委员会”审批可以自由使用。
The carrier frequencies commonly used in the configuration of roller shutter remote controller are 433MHz and 315MHz. The carrier frequency used by the remote controller is the open frequency band specified by the state. In this frequency band, the transmission power is less than 10MW and the coverage is less than 100m. As long as it does not exceed the scope of the unit, it can be used freely without the approval of the "Radio Regulatory Committee".