Sequence circuit during automatic control, please
action
When a person passes by, the sensor operates and the motor starts. Timer set value
It's possible up to here, but the next one is fine.....
ex) When No. 1 person passes, the sensor operates and the motor runs for 25 seconds (the distance that the person needs to move takes about 20 seconds)
However, if person #2 enters after 15 seconds while person #1 is passing by, the motor stops before moving to the end.
So, if the Sensor operates again during operation, please ask me how the Timer operates from the beginning.
Self-made method using 555 timer IC.
[Part constant]
1.RA 220K ohm
2.C to 100uF
3.A5T3644(TR)--->2SA562 (usually called A562)
4. Connect the sensor output signal (low when operating) to the input (trigger terminal 2).
[Overview of operation]
1. Normally, Out terminal (terminal 3) is low.
2.Sensor operates and the Out terminal (No. 3 terminal) turns off from the input (No. 2 trigger terminal) low signal.
It goes high. The time is about 25 seconds (time can be adjusted by attaching a variable resistor to the RA.
3. If the sensor operates again during time operation and the input is retriggered, it operates again for 25 seconds from that point.
If the sensor operates repeatedly, the time continues to extend.
4. It is convenient to use 12V power and attach a 12V relay to the output terminal (terminal 3).
** As shown in the attached circuit at the bottom, if you put 100k ohms on the 2nd terminal again, the operation is very stable.
**It is even better if terminal 5 is set to 0.01-->0.1.
[Relay Attachment Reference Circuit]