Control system of the Neon Lamp
Requirements:
¡¡A. The neon lamp shall be automatically turned on at 18:00 and turned off at 24£º00 every day.
 
¡¡B. The control can be switched over with the manual/automatic/off selection switch.
¡¡ ¡¡Manual: The neon lamp control system can be activated through the manual switch at any time.
¡¡¡¡ Automatic: The neon lamp control system can be automatically activated when the clock switch or light
¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡sensitive switch triggers the output.
¡¡¡¡¡¡Off: The neon lamp system can be switched off as the manual/automatic/off selection switch is pressed
¡¡¡¡¡¡¡¡¡¡¡¡twice and switched on as it is pressed for the third time.
 
¡¡C. The light sensitive switch shall be provided to complement the time switch so that the lamp will be
¡¡¡¡¡¡automatically turned on when it is dark and off when the light is sufficient.
 
¡¡D. Over (Under) voltage detector: the system will be automatically switched off when the operating voltage
¡¡¡¡¡¡of the neon lamp is too high or too low.
The function block program diagram is as following.

 

  Explanations:

 

¡¡a. I0 rain detector
¡¡b. I1 over (under) voltage detector
¡¡c. I2 light sensitive switch
¡¡d. I3 manual/automatic/off selection switch
¡¡e. I4 manual switch
¡¡f. Q1 to be connected to the enable terminal of ¡°ARRAY¡±.
¡¡g. Q2 to be connected to the enable terminal of ¡° Electronic¡±
¡¡h. Q3 to be connected to the enable terminal of ¡°Welcome you¡±.