Is there a way to implement IP monitoring and IP restriction on a server with mod_qos?

I have an Apache Web server and I want to monitor incoming requests, so that I can detect and prevent too many requests from one client.

I already know how to limit the number of all requests coming to the server but I want to block one client if it sends too many requests and not block any others.

I found qsexec but there is not much documentation for it on the web except a manpage.

There is also a VIP list in mod_qos but that means giving fewer restrictions to certain IP addresses. I need the opposite of that. I need to implement more restrictions on an IP address if it sends too many requests.