The invention provides a flat-opening astronomical dome terminator automatic opening and closing
control system with a rain and
snow sensing function, and relates to the field of astronomical dome
automatic control, and the
system comprises a control
decision unit and a hardware execution mechanism, the control
decision unit comprises a terminator reference calculation module and a
security policy arbitration module, the terminator reference calculation module calculates based on an astronomical model, and the
security policy arbitration module determines the terminator of the astronomical dome; the safety strategy arbitration module takes a rain and
snow signal and a manual remote instruction as the highest priority, cooperatively processes the reference instruction and a
morning and
evening timing
signal and outputs a final control instruction, and the hardware execution mechanism comprises a
programmable logic controller, a frequency converter, a
skylight motor and a
stroke end point switch. And the control module is used for receiving and executing the control instruction, driving the
skylight motor to realize flat opening and closing of the dome, and carrying out double limiting protection by the travel end point switch, so that an autonomous operation
system which takes astronomical timing as a core and is coordinated with rain and
snow induction is finally formed, and high-reliability and unattended
intelligent control is realized.