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Counter with increment acknowledge

B

Baroje

Jan 1, 1970
0
I thank you all for your help. I try to work something out. Only I know now
that there is people always ready to help. I think I'll go for the micro
switch, or if it won't be mechanical counter I'll try to monitor LSB.

THX Again
 
B

Brian Oakley

Jan 1, 1970
0
I
Baroje said:
Hello!

I need a digital counter which has the ability of sending the
acknowledgement signal on one of its outputs! I need to be 100 percent sure
that counter is incremented when button is pressed or some other event ocur!
When counter is incremented electrical signal must be send to one of the
counter outputs so that some other device can know for sure that the counter
was inrcemented.

Where can I buy counter with this ability or if not how can I modify one of
the existing counters to act like I want and need???

TNX
It seems after all these good ideas that there is one problem. Even if you
receive some sort of acknowledgement that the counter has incremented, you
dont know that it has actually made the count. In otherwords, say the train
comes through and the circuits indicate an increment of the counter, but the
actual number in the counter, for whatever reason, does not change. Then
your stuck with a false count. The ONLY way you can KNOW that the counter
has actually incremented is to LOOK AT THE COUNTER DISPLAY. If you are going
to trust that a signal is telling you it has incremented, you could just as
well trust the signal from the switch that increments the counter. Its
either/or, but you still dont KNOW its incremented without seeing the
counter. You either trust the circuit to do its job, or you babysit it to
make sure it does it, then you kill the whole reason to have an automated
counter. The BEST way to implement a relatively safe system is redundancy
in the counters and circuits. Then you periodically compare the counters
either manually or by a software program. If the numbers are the same, the
software just keeps comparing. If for some reason the two counters get out
of sync, then the software can send an alarm to you so you can check the
counters. That would be what I might do. Hope this helps somewhat. God
bless.
Brian
 
C

CWatters

Jan 1, 1970
0
Brian Oakley said:
It seems after all these good ideas that there is one problem. Even if you
receive some sort of acknowledgement that the counter has incremented, you
dont know that it has actually made the count.

Heck if you are that worried you could have a computer "look" at the counter
with a camera and do image recognition on it to be sure if changes before
sending the acknowledge... or perhaps have the operator at the other end
retype the number back and send it to the button end for checking.
 
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