Tips & Tricks For Perimeter Protection

Choosing a Suitable Installation Site

The installation site should provide a large visual field in an open space, without drastic changes in lighting conditions. The scene should be free of visual distractions and frequently moving targets. It should not include large obstacles around the target area that can block the view of intruders.
Sites with clearly-defined borders are ideal for installation, such as gated communities, store entrances, garage entrances, railways, and highways. The absence of a physical barrier doesn’t impede one’s ability to protect a defined perimeter, however. Perimeter protection can be used to detect people falling into bodies of water or intruders on rooftops. The target filter can quickly distinguish a car driving on a sidewalk or people walking on a freeway on-ramp.

Selecting the Right Installation Type

The installation type is also essential to successful perimeter protection. Cameras should be installed at a high position perpendicular to the area being monitored. The recommended installation height is greater than 9.8 feet (3 meters) and the maximum height varies with different lenses. The recommended installation angle is 0°– 45°.
Consider what the scene will look like at night. If the camera will be capturing vehicle headlights head-on, the drastic change in lighting conditions will negatively impact detection performance. If ambient light is not bright enough, detection accuracy may be impacted.

Using the Right Lens

The recommended lens is one with a focal length that’s wide enough to cover an entire perimeter if possible. If not, you can design using multiple perimeter ­protection cameras to provide full area coverage. Make sure the lens you choose is within the installation distance reference below. For fixed lenses, use this reference table:

 
For vari-focal lenses, follow this guide: When the installation distance is between 16–72 feet (5–22 meters) from the target, select a lens with a focal length of 2.7mm~13.5 mm.

Video Tips

When you are ready to give it a try, we recommend to watch the following step-by-step video instructions on how to set up perimeter protection:
https://bit.ly/3CCwRT2
Dahua Technology is recognized internationally as a video-centric smart IoT solution and service provider that offer highly efficient, reliable, and cost-effective visual systems powered by AI and constantly improved with cutting-edge techniques to ensure high-quality performance. Recently, to better meet various demands of users, Dahua Technology introduced the latest innovations in highly accurate perimeter protection. This technology greatly enhances tripwire and active deterrence functions by including a target filter, a highly accurate way to distinguish between people and vehicles. Targets that cross a defined line can be categorized as humans or motor vehicles, making it easier to search for the target and allowing the option to set up alerts for specific types of intrusions. This solution has reached high standards of accuracy, farther detection, alarm target classification and quick tracking.

More info about Dahua Technology’s perimeter protection solution and its application are summarized in this video:
https://bit.ly/2U7KhoG