Trigger once over time period

Hello,

I need to trigger a recording to start when a value goes over a threshold. However, when the value goes over the threshold, it stays there, so I'm getting a lot of record signals sent at once. How do I make it send only one trigger signal in a set period of time, to account for the lag?

I hope this is clear enough--the actual project is rather complicated and hard to explain. But I'm recording to multiple buffers, and incrementing the buffer number each time a record trigger is sent, so I need there to be only one record trigger sent. If there's an easier way to do the whole thing, let me know.

Thanks in advance.