As a lifting machine, the guide rail elevator can transport materials and personnel, but due to serious interference, it can not ensure the safe operation of the lifting platform. In order to solve this problem, the automatic leveling controller can be set on the guide rail elevator, but there are still strong interference sources. How to resist interference?

液位控制器主要由單片機作為核心部件，通過固態(tài)繼電器控制交流接觸器，進而控制三相交流電動機。由于交流接觸器和交流電動機是強干擾源，解決這一部分的干擾是關鍵。我們采取的措施主要分為兩個方面，一是硬件抗干擾措施，二是軟件抗干擾措施。

The liquid level controller is mainly composed of a single chip microcomputer as the core component, which controls the AC contactor through the solid-state relay, and then controls the three-phase AC motor. As AC contactor and AC motor are strong interference sources, the key is to solve this part of interference. The measures we have taken are mainly divided into two aspects: hardware anti-interference measures and software anti-interference measures.

為了提高升降平臺調平控制系統(tǒng)的可靠性，輸出端采用光電隔離技術等具有保護和抗干擾雙重功能的隔離技術，為主控系統(tǒng)提供兩部分光電隔離。同時，還可以找到提高信號傳輸容量的方法，達到抗共模干擾的目的。

In order to improve the reliability of the leveling control system of the lifting platform, the output terminal adopts photoelectric isolation technology and other isolation technologies with dual functions of safety protection and anti-interference, providing two parts of photoelectric isolation for the main control system. At the same time, we can also find ways to improve the signal transmission capacity to achieve the purpose of anti common mode interference.

除了在控制器硬件上采取相應的屏蔽措施外，在軟件上也采取了相應的抗干擾措施，包括指令冗余、定時器設置、手動復位等，大大提高了系統(tǒng)的可靠性，保證了升降平臺的運行。

In addition to the corresponding shielding measures on the controller hardware, the corresponding anti-interference measures are also taken on the software, including command redundancy, timer setting, manual reset, etc., which greatly improves the reliability of the system and ensures the safe operation of the lifting platform.

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