1. What does the professional civilian security surveillance camera system equipment include?
1. Embedded hard disk video recorder
Overview: Embedded hard disk video recorder generally refers to the DVR system, which is one of the main security monitoring equipment. It writes the internal operating system and application programs to the memory chips such as single-chip microcomputers, and is a video monitoring equipment for a specific application. The embedded monitoring device is a dedicated storage device, and a removable carrier such as a hard disk is only responsible for storing image files. This brings fast speed without waiting, strong anti-tampering ability, super stability, and makes the system more professional, more practical, more stable, and more reliable. Professional embedded monitoring equipment is a dedicated monitoring equipment.
How to choose security monitoring equipment: Generally speaking, there are more choices of embedded hard disk video recorder + display, because of its simple operation and stable performance. There are also some users who choose a video capture card, which can be used with a computer to achieve integrated entertainment monitoring. Which one is more suitable for you? Let's analyze it.
a. From the performance point of view: the embedded hard disk video recorder starts fast, and the video capture card performance is good (related to the computer configuration)
b. From the operation point of view: the embedded hard disk video recorder is fast to operate, and the video capture card is complicated to operate
c. From the perspective of stability: the embedded hard disk video recorder has stable performance, low failure rate, and the video capture card is susceptible to many interference factors and poor stability
d. From the perspective of energy consumption: embedded hard disk video recorder has low energy consumption, and video capture card has high energy consumption (computer must be turned on for 24 hours)
Purchase advice: Civilian use: supermarkets, Internet cafes, shops, small commercialization, the performance of the monitoring system must be stable and long-lasting, and simple to operate, with low failure rate. Therefore, it is recommended to use an embedded hard disk video recorder.
2. Surveillance cameras (commonly known as surveillance cameras, surveillance probes, surveillance heads, electronic eyes, etc.)
Overview: Surveillance cameras in surveillance equipment are also called 'monitoring eyes' CCD (Charge Coupled Device), or charge coupled device. Strictly speaking, the camera is the general term of the camera and the lens, and the surveillance camera is divided into the hemisphere camera and the gun camera.
Dome camera: Named for the shape of the hemisphere. It is small in size and beautiful in appearance, so it is suitable for indoor fixed monitoring locations such as office areas, elevators, corridors, beauty salons, etc. It is also commonly used in offices, governments, banks, etc. place
Box camera: Simply put, it is only named for the shape. It is suitable for large, medium and small sizes indoors and outdoors. There is no difference in performance from the dome camera. It only uses some differences in the monitoring environment, such as factories, scenic spots, and squares. Wait.
The difference between a gun-type surveillance camera and a dome camera:
a. The dome camera is beautiful and has good concealment. The gun camera is highly expandable.
b. The dome camera is directly equipped with a protective cover, while the gun-type camera needs to be equipped with a protective cover on site.
c. The zoom range of a dome camera is generally not too large, and its lens cannot be flexibly replaced. The monitoring range of the gun camera depends on the lens, which can be changed from several times to several tens of times, and the lens is easy to change.
d. Dome cameras are mainly used to monitor fixed fields of view such as elevators, stairs, corridors, etc. The scope of application of the gun camera is relatively wide, and it can realize long-distance monitoring and wide-angle monitoring according to the selected lens. It can be used more widely than dome cameras.
Recommendations for purchase: According to the site conditions, under normal circumstances, it is recommended to use a dome camera for civilian monitoring equipment
How to choose a surveillance camera: In fact, the selection and classification of CCD cameras CCD chips are like the human retina, which is the core of the camera. At present, my country is not capable of manufacturing. Most of the cameras on the market use chips produced by companies such as SONY, SHARP, Panasonic, and LG. South Korea is also capable of producing them, but the quality is a bit inferior. Generally speaking, civilian-grade cameras are selected by 420 lines, 480 lines, 520 lines, etc. to represent the definition of the camera. When purchasing, you can take the following methods to detect: turn on the power, connect the video cable to the monitor , Close the lens iris to see if there are bright spots when the image is completely black, and the snowflakes on the screen are not big. These are the simplest and direct methods to detect the CCD chip, and no other special equipment is needed. Then you can open the iris and look at a still life. If it is a color camera, it is best to capture a brightly colored object and check whether the image on the monitor is color cast, distorted, and whether the color or grayscale is smooth. A good CCD can restore the color of the scene very well and make the object look clear and natural; and the defective image will have a color cast phenomenon, even if it faces a piece of white paper, the image will show blue or red. Due to the dust in the production workshop of individual CCDs, there will be impurities on the CCD target surface. Under normal circumstances, the impurities will not affect the image, but in low light or microscopic imaging, small dust will also cause undesirable consequences, so be careful Pick.
3. Monitoring dedicated memory: (commonly known as: monitoring hard disk)
The special hard disk for monitoring is much more durable and practical than ordinary hard disks.
Difference: Ordinary hard disk will start at full speed when it is powered on, and the instantaneous current may reach 2A, or even higher ------ energy consumption.
When the monitoring hard disk starts, it will accelerate slowly, and the startup current will be controlled below 2A-energy saving.
In a professional monitoring system, multiple hard disks are usually installed, so that a large startup current will be generated at the moment of startup. If it is an ordinary hard disk, the power supply will be unbearable or even burned. In addition, the dedicated monitoring hard disk is only optimized for the read-write characteristics of the monitoring system in the magnetic head read-write mechanism to extend the life of the magnetic head. The theoretical average fault-free running time of surveillance hard disks is much longer than that of ordinary hard disks, with higher stability and reliability. The main features are more suitable for some special security protection industries, such as all-weather digital video surveillance systems.
Purchase suggestion: In order to make the civilian monitoring system more durable and practical in operation, it is recommended to purchase a professional monitoring hard disk.
4. Bracket
In order to better fix the camera to a certain position, choosing a suitable bracket is not a trivial matter. Indoor brackets are long, short, straight, and curved. Choose the appropriate bracket according to the different use environment. The outdoor bracket should be selected in consideration of its load capacity and outdoor environment. For example, if you need to install it to a special location, you should order a suitable bracket.
The method of installing the surveillance camera is explained: First: try to see if the screws of the bracket and the screw of the camera base are suitable, the determined installation position, whether the embedded pipeline interface is handled well, and whether the cable is unblocked. Take out the purchased infrared integrated surveillance camera (if it is not an integrated camera, install the lens carefully according to the pre-determined camera lens model and specifications). Be careful not to touch the lens and CCD with your hands (the part marked in the figure). If you need to install the shield, start to install the shield directly at this time. After confirming the fixation, turn on the power and connect the surveillance video recorder to the on-site display. Second: Take out the brackets, expansion plugs, screws, screwdrivers, hammers, electric drills and other accessories and tools, and install the brackets according to the predetermined position. After checking that it is secure, install the camera in the direction you need to monitor. 1. Open the cover and the rear baffle and pull out the fixed metal sheet to fix the camera; 2. Put the power supply into the shield; 3. Reset the upper cover and the rear baffle, straighten out the cables, fix them, and install them to the bracket superior. Insert the welded video cable BNC plug into the video cable socket and confirm that it is fixed. Finally: Insert the power output plug of the power adapter into the power socket of the surveillance camera, and confirm the firmness. Connect the other end of the cable to the surveillance video recorder and monitor (or TV) to ensure it is secure. Turn on the power of the surveillance video recorder and the camera, and adjust the angle of the surveillance camera to the predetermined range through the display. Surveillance camera installation suggestions: As it is a high-tech electronic product, it is recommended to find a local professional surveillance company to purchase professional surveillance products + professional surveillance installation + commissioning + maintenance == high-quality surveillance effects, the products of Hyde Security Equipment Co., Ltd. don't need to worry you The quality of the product, that is, worry-free and easy
