Detecting multiple events

Hello
I am working on using sound as a condition monitoring tool. I currently have a system setup where a microphone monitors a set of metal shears. Input is via the PC soundcard. I have a VI setup that listens for the cutting action. It then extracts a portion of the signal, in this portion it should be possible to detect a second sound which is the cut (cropped) metal falling into the bin.
I have the system working such that there are two indicators on screen. One indicator denotes a crop detected and the second indicates that it has been succesful. What I want to do is combine this into a single indicator - i.e. if crop=true and succes=true then indicator =green, and, if crop=true and success=false then indicator=red.
The problem I have is that the two events occur at different times so I need to 'latch' the first crop signal for a period of time while listening for the second event. However I can't seem to create a latch that works.
Any help greatfuly received.
Thanks
Dave Murray

One possibility is to have the first instance's result stored in a shift register (one that is initialized before you are looking for the data), which get compared with the second's result to provide your Pass/Fail. Then the shift register can be reset to its initial state. If you have a snippet of your code that you can show, either actual code or a .jpeg or .png picture of the diagram (please no BMP's) it might help.
P.M.
Message Edited by LV_Pro on 09-22-2005 09:45 AM
Putnam
Certified LabVIEW Developer
Senior Test Engineer
Currently using LV 6.1-LabVIEW 2012, RT8.5
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Message was edited by:
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Detecting multiple events

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