According to the requirement of four-way responder, two different methods of digital circuit and PLC are designed and compared in this paper. The first method is to use the integrated chip "4511" and "555" and the corresponding peripheral circuit to achieve, according to the four-way scrambler design block diagram, successfully designed the schematic diagram and the corresponding PCB diagram, and actually made the finished product; The other method is to use programmable logic controller PLC to realize, designed the ladder diagram and the corresponding statement table of the four-way responder PLC control, and actually made the finished product. Both of these methods have been successfully implemented, have good application value in practice, and can be based on this idea, expand into more and better multi-route responder.
KEYWORDS: Photonic integrated circuits, Control systems, Light emitting diodes, Digital electronics, Corrosion, Voltage controlled current source, Capacitors, Packaging, Clocks, Power supplies
The design of this timer, its function is the timing control circuit required to work for 1 second, and then stop for 3 seconds. This is a working cycle. When the timer works, the light-emitting diode lights up, when the timer stops, the light-emitting diode puts out, The number of working cycles of timer is displayed by digital tube. Stay after a period of seven shows on eight. NE555N is used as the clock control circuit, SN74LS161AN is used to count, CD4511BCNis used as the digital tube driver, and the common cathode digital tube is selected as the display. Two ways are used to design, that is, digital electronic technology and PLC control, and the actual circuit board, and have been successfully implemented according to the requirements.
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