Introduction

The ANPR Lumo will read license plates out of the box without the need for triggering. We call this the free-run mode or non-triggered mode. In this mode the camera is always searching for number plates.

But sometimes the application where the ANPR Lumo is installed is requiring that the Lumo will only read plates when the third party system needs that. Typically we see those requests when the Lumo camera is used together with a parking application.

In those cases the Lumo can be set into a triggered mode, the ANPR lumo has 3 options for triggering, and for every option you have some different modes to choose from.

Trigger options

The following 3 types of triggering are supported by the Lumo camera

1. IO = The digital inputs of the camera are used to trigger the camera. This will need wiring to the camera.
2. TCP = The camera is triggered with a TCP command, with this option there is no extra wiring required.
3. HTTP = This type is almost the same as the TCP, but now a HTTP command is used to trigger the camera. For this there is also no need for extra wiring

The commands to send when using the TCP trigger are:

Start: when a messages with value 1 (0x01) Byte is received

Stop: when a messages with value 0 (0x00) Byte is received. * 

The commands to send when using the HTTP trigger are:

Start: HTTP GET Request gets to the endpoint: http://camera_ip/trigger/start

Stop: HTTP GET Request gets to the endpoint: http://camera_ip/trigger/stop *

* only required in the mode start-stop

Trigger Modes

For each trigger option, you can configure the way the camera should react to a trigger.

Start – Stop

Starts reading on digital input change or TCP/HTTP trigger and stops reading on digital input change/ TCP/HTTP request.

Start-Time

Starts reading on digital input change/ TCP/HTTP trigger and stops when the specified time has passed

Start-Sequence

Starts reading on digital input change/ TCP/HTTP trigger and stops when the specified sequence frames has passed

Single shot

Starts reading on digital input change/ TCP/HTTP trigger and ends after grabbing one shot

Single line

This mode only counts when digital input is used. The LUMO start reading when the digital input changes from low to high and stops when this input is low again.