Events monitoring and triggers
Events monitoring and triggers
Is there a way to send events to an external script or trigger a script to execute based on some event?
Re: Events monitoring and triggers
Search for zmtrigger.pl and zmx10.pl to see what others have done. From the main doc:
zmx10.pl
This is an optional script that can be used to initiate and monitor X10 Home Automation style events and interface with an alarm system either by the generation of X10 signals on ZoneMinder events or by initiating ZoneMinder monitoring and capture on receipt of X10 signals from elsewhere, for instance the triggering of an X10 PIR. For example I have several cameras that don’t do motion detection until I arm my alarm system whereupon they switch to active mode when an X10 signal is generated by the alarm system and received by ZoneMinder.
zmtrigger.pl
This is an optional script that is a more generic solution to external triggering of alarms. It can handle external connections via either internet socket, unix socket or file/device interfaces. You can either use it ‘as is’ if you can interface with the existing format, or override connections and channels to customise it to your needs. The format of triggers used by zmtrigger.pl is as follows "<id>|<action>|<score>|<cause>|<text>|<showtext>" where
* 'id' is the id number or name of the ZM monitor
* 'action' is 'on', 'off', 'cancel' or ‘show’ where 'on' forces an alarm condition on, 'off' forces an alarm condition off and 'cancel' negates the previous 'on' or 'off'. The ‘show’ action merely updates some auxiliary text which can optionally be displayed in the images captured by the monitor. Ordinarily you would use 'on' and 'cancel', 'off' would tend to be used to suppress motion based events. Additionally 'on' and 'off' can take an additional time offset, e.g. on+20 which automatically 'cancel's the previous action after that number of seconds.
* 'score' is the score given to the alarm, usually to indicate it's importance. For 'on' triggers it should be non-zero, otherwise it should be zero.
* 'cause' is a 32 char max string indicating the reason for, or source of the alarm e.g. 'Relay 1 open'. This is saved in the ‘Cause’ field of the event. Ignored for 'off' or 'cancel' messages
* 'text' is a 256 char max additional info field, which is saved in the ‘Description’ field of an event. Ignored for 'off' or 'cancel' messages.
* 'showtext' is up to 32 characters of text that can be displayed in the timestamp that is added to images. The ‘show’ action is designed to update this text without affecting alarms but the text is updated, if present, for any of the actions. This is designed to allow external input to appear on the images captured, for instance temperature or personnel identity etc.
Note that multiple messages can be sent at once and should be LF or CRLF delimited. This script is not necessarily intended to be a solution in itself, but is intended to be used as ‘glue’ to help ZoneMinder interface with other systems. It will almost certainly require some customisation before you can make any use of it. If all you want to do is generate alarms from external sources then using the ZoneMinder::SharedMem perl module is likely to be easier.
Re: Events monitoring and triggers
I believe this is only to trigger an alarm in Zoneminder based on external trigger. I'm looking at the other way around, triggering a script to execute based on live events happening inside Zoneminder. Yes I have looked at Event Filter as well which allow you to execute an external script based on some matched criteria but I think this is only a manual process and it does not have the ability to trigger an external script based on current events.
bb99 wrote:Search for zmtrigger.pl and zmx10.pl to see what others have done. From the main doc:
zmx10.pl
This is an optional script that can be used to initiate and monitor X10 Home Automation style events and interface with an alarm system either by the generation of X10 signals on ZoneMinder events or by initiating ZoneMinder monitoring and capture on receipt of X10 signals from elsewhere, for instance the triggering of an X10 PIR. For example I have several cameras that don’t do motion detection until I arm my alarm system whereupon they switch to active mode when an X10 signal is generated by the alarm system and received by ZoneMinder.
zmtrigger.pl
This is an optional script that is a more generic solution to external triggering of alarms. It can handle external connections via either internet socket, unix socket or file/device interfaces. You can either use it ‘as is’ if you can interface with the existing format, or override connections and channels to customise it to your needs. The format of triggers used by zmtrigger.pl is as follows "<id>|<action>|<score>|<cause>|<text>|<showtext>" where
* 'id' is the id number or name of the ZM monitor
* 'action' is 'on', 'off', 'cancel' or ‘show’ where 'on' forces an alarm condition on, 'off' forces an alarm condition off and 'cancel' negates the previous 'on' or 'off'. The ‘show’ action merely updates some auxiliary text which can optionally be displayed in the images captured by the monitor. Ordinarily you would use 'on' and 'cancel', 'off' would tend to be used to suppress motion based events. Additionally 'on' and 'off' can take an additional time offset, e.g. on+20 which automatically 'cancel's the previous action after that number of seconds.
* 'score' is the score given to the alarm, usually to indicate it's importance. For 'on' triggers it should be non-zero, otherwise it should be zero.
* 'cause' is a 32 char max string indicating the reason for, or source of the alarm e.g. 'Relay 1 open'. This is saved in the ‘Cause’ field of the event. Ignored for 'off' or 'cancel' messages
* 'text' is a 256 char max additional info field, which is saved in the ‘Description’ field of an event. Ignored for 'off' or 'cancel' messages.
* 'showtext' is up to 32 characters of text that can be displayed in the timestamp that is added to images. The ‘show’ action is designed to update this text without affecting alarms but the text is updated, if present, for any of the actions. This is designed to allow external input to appear on the images captured, for instance temperature or personnel identity etc.
Note that multiple messages can be sent at once and should be LF or CRLF delimited. This script is not necessarily intended to be a solution in itself, but is intended to be used as ‘glue’ to help ZoneMinder interface with other systems. It will almost certainly require some customisation before you can make any use of it. If all you want to do is generate alarms from external sources then using the ZoneMinder::SharedMem perl module is likely to be easier.