Power switch controller of a sign board through with calculating of sunrising time and sunset time

摘要

An object of the present invention will automatically calculate the sunrise, which can calculate automatically the sunrise time and the sunset time using the local latitude and longitude values, and automatic on / off control of the advertising fixtures're streetlights signage lighting according to their calculations sunset time to provide a signboard lamps on and off control.; The present invention for achieving the above object, the microprocessor 10 and, O / S ROM 14, a sunrise the RAM 15. The program data for output, and the current latitude, longitude, time, weather, this pirom 12 that stores a timer value such as, chip select, clock, and a multiplexer 16 which by entering the third signal of the PIO output eight signals, is connected to the output of the multiplexer at the current time, latitude, longitude the switches for setting the values ​​in this pirom (41-45) and, by the LED's (46-50) for now display the operating mode of the switch, the digits of the seven segment display control output and the multiplexer of the microprocessor selecting the segment blocks (56) driven by the output drive receives from the latch 17 connected to the output of the multiplexer to the power control output signal to the relay 19, having a sign for the main power switch contact 20 and , the entire relay and circuit An operation voltage supplied to the supply, and characterized in that it comprises a power switch 21 for on / off controlling a power supply 40 including a backup battery circuit, that the voltage of the power source supplied to the entire circuit and the relay.