Basler Vision Technologies BIP-1000c, Руководство пользователя

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Day/Night Functionality
74 Basler IP Camera
6.2 IR-Cut Filter Control Options
Controlling the IR-Cut Filter Position Via Input Pin 0
As mentioned in Section 6.1 on page 71 , the IR-cut filter can be set for several different modes of
operation. If you set the IR-cut filter mode to "Input Pin 0 Controlled" this will let you control the
position of the IR-cut filter (open or closed), by inputting a signal into input pin 0 on the camera.
When the input is active, the filter will be placed in the open position. And when the input is inactive,
the filter will be placed in the closed position.
At night or in low light situations, you may be using an "IR illuminator" to illuminate the area being
viewed by you camera with infrared light. Many IR illuminators include a photocell that detects the
change from day to night and from night to day. Often, the photocell in an illuminator will be
associated with an internal switch that opens and closes based on the conditions detected by the
photocell. As illustrated in Figure 8, when the IR-cut filter mode is set to "Input Pin 0 Controlled",an
internal switch such as this can be connected to input pin 0 on the camera and used to control the
position of the IR-cut filter.
NOTICE
The text in this section and the illustration shown in Figure 8 are intended as a general description
of how you can use the input to control the IR-cut filter position. Any device that you attach to the
input of the camera must adhere to the specifications for the input as given in Table 3 on
page 66 .
Using the input in a way that does not meet specifications can result in severe damage to
the camera.
1. Always make sure that any circuit attached to the input meets the input’s specifications.
Input
1
2
3
4
5
6
Illuminator
Camera
Internal switch
associated with
a photocell
Fig. 8: Input Used to Control IR-Cut Filter Position