Elevating work platform leveling controller in outdoor work, harsh environment, many sources of interference, the system is controlled by the microcontroller via solid state relay exchanges and contacts, and then control the three-phase AC motor. The following experts Jinan bridge machinery manufacturing'll tell you about elevating work platforms automatic leveling control anti-jamming measures.
升降作业平台现场开关与计算机输入接口之间，传输线路较长，容易引起强电干扰。因此，为提高升降作业平台平层控制系统的可靠性，输出端多用具有安全保护和抗干扰双重作用的隔离技术。隔离双方无电路联系，各用独立电源和公共接地地段。
Elevating work platforms scene switches and computer input interface between the transmission line is longer, likely to cause strong electrical interference. Therefore, in order to improve the reliability of lifting platforms leveling control system, the output of multi-use with security protection and anti-jamming technology dual role of isolation. The two sides no contact isolation circuit, each with a separate power supply and lots of common ground.
升降作业平台差分电路输入端是两个信号的输入，这两个信号的差值为电路有效输入信号，电路的输出是对这两个输入信号之差的放大。如果存在干扰信号，会对两个输入信号产生相同的干扰，通过二者之差，干扰信号的有效输入为零，这就达到了抗共模干扰的目的。除了在升降作业平台控制器的硬件上采取相应的屏蔽措施，在软件上同时也采取相应的抗干扰措施。
Lifting working platforms differential circuit input is an input of two signals, the difference between these two signals is a valid input signal circuit, output circuit is the difference between these two input signals of the amplification. If the jamming signal is present, the two input signals will produce the same interference, by difference between the two, the effective input disturbance signal is zero, this achieves resistance to common mode interference. In addition to taking the appropriate measures to shield the hardware controller on elevating work platform, but also to take appropriate measures on anti-jamming software.
In elevating work platform leveling controller actual work, if and when the cage is already in high altitude, CPU instantly freezes, then press the reset button to restore the system, but the system will consider the current position as the starting position. At this function automatically leveling has been out of action. Then you can use the manual way to get back to the reference point to the cage.