ANPR LUMO | installation guide
7.2.1 TRIGGER MODES
The ANPR Lumo may not only operate in free running mode, it can also be triggered by external signals. These trigger
signals can enable and disable the operation of the camera in a flexible way.
Within a trigger period, when the camera is active, it behaves like in free running mode. This means that reading and
sending of LP texts, list matching etc. is performed as usual.
If no LP has been detected at the end of an active trigger period, the camera can also create a NoRead event and
perform an action. This feature may be useful if you are expecting a vehicle within the trigger period, but it fails to show
up.
TRIGGER TYPE NONE:
This is the default freerunning mode, no external or internal trigger is active.
The optional NoRead parameter allows you to trigger NoRead events in regular intervals, it specifies the time span
without any plate readings before a NoRead event is triggered.
By using this parameter you can set up the camera to trigger an action if no license plate has been detected.
The NoRead event mechanism can be used in all modes of operation (parking, single, etc.). For example, if parking
mode is used, the camera will send the first reading of LP to a server. As long as the same car is detected, no further
readings will be sent, nor will a NoRead be triggered. When the car leaves the gate, after NoRead event seconds, an
action will be triggered if no other car enters the field of view of the camera.
If the NoRead interval is set to 0, it will be ignored.
trigger type IO Start/Stop:
Start and stop reading is controlled by separate Digital Inputs
Setup: Define Start trigger Input, Start trigger polarity. In addition,
define Stop trigger input and Stop trigger polarity. If Start trigger
polarity high is enabled, the session will start when the input
signal is transitioning from low to high. If Start trigger polarity high
is disabled, the session will start when the input signal is
transitioning from high to low.
Start: The session will start when the signal from Start trigger line
is received.
Stop: The session stops when the signal from Stop trigger line is
received. In case a new trigger signal is received while the old
session is still open, the camera closes the old session and opens
a new session immediately.
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