The Smoke and fire detection analytics. The camera requirements
In this guide, you find the requirements for the main specifications of the IP video camera, the placement of the camera, and the images in the database to ensure the performance of the Smoke and fire detection analytics.
The camera specifications
When selecting an IP videocamera, you should take into consideration the requirements for captured images, the camera specifications, the installation requirements, the control zone peculiarities, and the location and operating conditions.
For the Smoke and fire detection analytics, an IP video camera should have the following specifications:
Specifications | Value |
|---|---|
Matrix It is a key component of a camera that defines image quality. The value of this component reflects the size of the matrix diagonal in inches. | 1/3 inches and larger if the control zone is poorly illuminated. |
Lens aperture ratio (light sensitivity) Plays a crucial role in overall image quality. Lens aperture – is the maximum light capacity of a lens, which determines how much light can pass through to the camera sensor. The F-number means the maximum size of the aperture. The smaller the F-number, the more light the lens can gather. | F1.4 and better to ensure image contrast and clarity at night. |
Focal length It is one of the key specifications that determines the camera field of view (vision angle), measured in millimeters. | The focal length of the camera lens should correspond to the distance between the camera mounting placement and the anticipated area of recognition to ensure compliance with the video image requirements. To calculate the required focal length, you may use the Lens Calculator. |
To define the required camera specifications, in addition to the list mentioned above, you may use the Lens Calculator. On the opened service page, specify the matrix size, the focal length, the distance from the camera placement to the object of recognition, the mounting height, and so on.
As a result, you’ll receive the relevant camera specifications required for the relevant analytics type in the specified operating conditions, as well as the geometric placement of the camera (the mounting height and distance from the object of recognition).
The camera placement requirements
Below, you find the camera placement requirements for the Smoke and fire detection analytics.
Camera placement parameters | Value |
|---|---|
Mounting height | Not higher than three meters |
Maximum allowed vertical mounting angle | 70° |
Distance to the anticipated object of detection (smoke, fire) | In the camera vision field |
Stable mounting | Ensure the camera is free from vibration |
Illumination |
|
The image requirements
A minimal detection area (smoke, fire) – 20х30 pixels.
The image and background should be static without constantly moving objects within the camera view field.
Within the camera view field, avoid placing so-called “useful” smoke and fire sources, for example, stoves, steam generators, and welding equipment.
