Novus NVAHD-2DN3201MH/IR-1-PIR, Руководство пользователя

Страница: 8 / 32

NVAHD - 2DN3201MH/IR - 1 - PIR - User’s manual ver. 1.0
All rights reserved © AAT Holding S.A.
8
PIR FUNCTION
4. PIR FUNCTION
4.1 PIR detector - introduction
Passive infrared detectors ( PIR ) are widely used, in the alarm systems for motion detection. Operation
of the sensor is based on precise measurement of the temperature of objects in a specific area, and
each change of this temperature is interpreted as motion by integrated electronics
- and generates an
alarm.
4.2 PIR detector in the AHD camera
The task of the PIR detector in the AHD camera is to limit the number of false motion detection
alarms. The PIR detector, working in conjunction with the motion detection function, detects moving
objects with a temperature higher than the ambient temperature. It is only the simultaneous detection
of motion by the PIR detector and the motion detection function that generates an alarm event. In this
way, the PIR sensor significantly reduces the number of false motion detection alarms related to light
flashes, snowfall or day/night switching.
4.3 Configuration of the PIR function
WARNING:
Configuration of the PIR function in the camera and receiving events is possible only through
the menu of the Novus brand recorder, supporting the PIR functionality.
After connecting the camera with the PIR detector to the recorder, it is automatically recognized and
the recorder activates the "PIR" option for the channel in the "Alarm" section. Configuration is
performed similarly as for motion detection: specify the detection zone, sensitivity, time post
- alarm
recording and enable recording.
Recordings of events from PIR detection are marked in purple in the schedule and on the recording
graph.
Enabling in the recorder the PIR event receiving, disables the ability to control the camera
functions via the COAX protocol. In order to display the menu and control the functions of the
camera, it is necessary to disable receiving PIR events in the option Alarm
- > PIR (option Enable
- > Disable)