Hi, all!
Today I want to share with you how to choose a camera. I'm going to talk about it from the following aspects.
The necessity of installing the monitoring system
Surveillance Camera Selection Principles for Small- and Medium-Sized Stores
Selection Elements for Surveillance Cameras
The necessity of installing the monitoring system
If you haven't installed a security camera yet, you must see what it does and what it means.
Deterrence
Deterrence, yes, you heard me right! When you mount the camera in a conspicuous location (whether you use it or not), it's a deterrent. A thief who sees a camera is likely to give up the offense, which, after all, increases the difficulty and cost of stealing.
In his mind, it could be like breaking the law in front of the police.
Investigation and evidence collection
Of course, there are always people who want to give it a try. At this point, you can access surveillance video to quickly locate the thief's facial features. Provide valuable clues to the police.
Dispute resolution
Monitoring can be installed not only to prevent thieves, but also to resolve disputes. This is the important role of surveillance video, through the reappearance of the scene, can resolve disputes.
Night care and management
Connect the monitoring system to the alarm platform for real-time monitoring. Once an exception occurs, the system notifies the administrator of the exception through the mobile phone. In this way, the labor input is reduced, and the work becomes efficient and reliable.
Of course, a good monitoring system also comes with a management function that can provide you with analytics data based on your store's traffic and guide your subsequent operations.
Surveillance Camera Selection Principles for Small- and Medium-Sized Stores
For small- and medium-sized shops, the choice of the monitoring system is cost-effective. On the basis of cost-effectiveness, the monitoring system should be fully covered and monitor key areas.
Locations that need to be monitored include cashiers, customer concentration areas, and warehousing. Of course, this is an ideal situation. The specific deployment needs to be considered based on the area, structure, and power supply of the shop.
Selection Elements for Surveillance Cameras
The camera selection factors include appearance, focal length, storage mode, waterproof and dustproof, night vision, and other intelligent functions (alarm, conversation, and management).
Appearance Classification
Cameras include box cameras, dome cameras, semi-dome cameras, and PTZ cameras. In addition, there are some unusual cameras, such as fisheye cameras and card cameras.
For small and medium-sized shops, the most common are box cameras and semi-dome cameras. They're all fixed cameras, and the surveillance images are fixed.
The advantage of a box camera is that the lens selection is more flexible. It can be used for both remote and wide-angle surveillance. And the image is clear, the night vision function and waterproof and dustproof are better.
The dome camera is compact and easy to hide. It is suitable for small-scale surveillance and is installed on the suspended ceiling.
There's also a fisheye camera, mounted directly above the room, which has a wide range, allowing 360-degree surveillance without dead spots.
Cameras of different appearances have their own characteristics and application scenarios. You can select them based on your preferences and situations.
Lens focal length
The focal length of the lens determines the distance and range that this camera can monitor. Generally, the smaller the focal length, the wider the viewing angle, the smaller the viewing distance, and the larger the focal length, the narrower the viewing angle, and the longer the view can be seen.
Storage mode
One of the most important functions of the surveillance system is scene reproduction. This, of course, requires stocking up on daily recorded videos. Currently, surveillance cameras are stored in memory cards, NVR, and cloud storage.
The memory card is usually an SD card or TF card, which is installed on the camera. It is easy to use a memory card for storage. It is recommended that you use the memory card for storage of one camera or less than four cameras.
NVR storage can be used if there is a high requirement for video recording.
Cloud storage synchronizes surveillance files to the cloud in real-time, preventing video loss.
Waterproof and dustproof
For a description of the waterproofing equation, you can check it here.
(https://forum.huawei.com/enterprise/en/ip-camera-structure-and-imaging-principle/thread/722261-887)
If the camera is installed outdoors, use a high waterproof and city-proof camera.
Night vision
Today's webcams basically have infrared night vision. When the light is low, the camera starts the infrared light and enters the infrared night vision mode. In this mode, the video image is black and white. If you have higher requirements for video, you can choose a camera with full-color night vision, so the video is full color.
Other intelligent features
With the continuous expansion of customer requirements and the advancement of technologies, the surveillance system has many intelligent functions, such as alarm (motion detection, audible and visual alarm), and voice intercom.
Summary
Proper surveillance cameras not only prevent theft, but also help us reduce unnecessary disputes and improve efficiency.
When selecting cameras, we should focus on comprehensive coverage and key area surveillance, and select appropriate cameras based on the surveillance area and installation position.
