The tower clock is divided into indoor and outdoor parts from the exterior, and there is a master clock control system in the room. The outdoor is the sub-clock part, which can be divided into watch core, clock needle, scale, lighting system and the whole time speaker part.
The outdoor clock controller itself has a crystal oscillator circuit to form a signal, and its precision is 2 seconds/month, while the CPU continues to receive the time signal from GPS and Beidou signal, calibrating its own time signal, and then ensuring the degree of its time signal. The GPS satellite time calibration clock automatically receives the satellite time standard signal, calibrates the mother clock time, and synchronizes the operation of the tower clock with the standard clock to achieve no cumulative deviation. Intelligent travel time intelligent microcomputer control, computer monitoring, three needle travel time, second hand continuous operation, enhance the building's dynamic, tower clock controller selection selection of closed-loop control system.
The mother clock continuously sends the time signal to the child clock, and the output drive signal drives the motor to work and realize the travel time. The sub-clock transfers its status back to the mother clock, which is monitored by the mother clock, and the travel time of the sub-clock is also monitored by the feedback switch, thus ensuring that the entire sub-clock constitutes a closed-loop system. The master clock and the child clock form a large closed-loop system. Thus ensuring the accuracy of the entire building clock system.
The time signal of the mechanical clock comes from the balance wheel and the escapement fork or the pendulum and the escapement fork; The time signal of the tower clock comes from the GPS(time signal from the global positioning satellite) and the control (master clock). It can track more than eight satellites.
