Washer Spray Nozzle,Amine Inlet Flange,Air Washer Spray Nozzle,Cleaning Spare Parts Changzhou Jier Precision Machinery Manufacturing Co., Ltd. , https://www.jier-spinneret.com
Security monitoring beginners necessary knowledge manual
With the development of computer technology, network technology and security systems, visual control systems, electronic patrol systems and other modules are widely used in crowded areas such as residential quarters. The following is the content of the security monitoring equipment organized by the Xiaobian, I hope you like it!
Security monitoring equipment basic knowledge - installation application tutorial
The monitoring system installation first determines whether the existing computer is equipped with a monitoring card or an embedded hard disk recorder as your monitoring host. The use of a computer to install a monitoring card, the overall investment is relatively low, suitable for places familiar with computer installation, professionals on duty, more functional requirements. The computer needs to be turned on for 24 hours; the use of an embedded hard disk recorder requires no special knowledge, no need to watch, and the operation is very simple, just as easy as using a VCD;
Second, installing monitoring equipment requires determining the number of cameras to be installed and determining the monitoring range and image quality of each camera. First determine the number of cameras for surveillance, and then determine the scope of camera surveillance according to specific conditions: The distance from the camera to the monitoring point and the area to be monitored must be clearly defined. As for the definition, we believe that the camera of the 480 TV line is sufficient.
Third: Is there a night vision function? If your surveillance equipment is installed in a dark place such as a corridor, foyer, aisle, and warehouse, consider the infrared night vision camera. Note that the infrared camera is not only professional night. In addition to special or custom orders, IR cameras also need to have light-assisted five fingers at the scene, and the infrared distance will be shortened exponentially. If the scene is a garden lawn, the infrared effect is even worse.
Fourth: Is it directly wired or wirelessly installed? In addition to the expensive price, the wireless network does eliminate the troublesome and unattractive installation of the camera, but it needs to pay attention to the problems of distance and obstacles. In principle, cement materials will shorten the wireless transmission distance. Metal materials will completely block the wireless signal. The transmitter (on the camera) and the receiver (on the host) should be far away from other electrical appliances to avoid interference. If you want to use a wireless network, , there must be more than 2 times the price of monitoring equipment. We recommend using wired transmission for installation unless necessary.
Fifth: On-site monitoring and network monitoring When you determine the installation of the monitoring system, you need to consider whether you need the network function. That is to say, if you need to monitor and control the monitoring site at any time on the Internet, you need to select a monitoring host with network function. . Avoid installation and no network transmission.
Security monitoring equipment basic knowledge - monitoring equipment basic knowledge and installation
The first step is to determine whether the existing computer is equipped with a monitoring card or an embedded hard disk recorder as your monitoring host.
The use of a computer to install a monitoring card has a relatively low overall investment, and is suitable for places that are familiar with computer installations, have professionals on duty, and have more functional requirements. The computer needs to be turned on for 24 hours; the use of an embedded hard disk recorder requires no special knowledge, no need to watch, and the operation is very simple, just as easy as using a VCD;
Step 2: Determine the need for several cameras and determine the surveillance range and image quality of each camera
First determine the number of cameras for surveillance, and then determine the scope of camera surveillance according to specific conditions: the distance from the camera to the monitoring point and the area to be monitored must be clearly defined. We can obtain the approximate lens parameters based on the following formula. As for clarity, we believe that the 420 TV line camera is sufficient.
The third step: whether to have night vision function
In dark places such as corridors, foyers, aisles, and warehouses, infrared night vision cameras may be considered. It should be noted that, in addition to professional night vision or special orders, infrared cameras also need to have lighting assistance on the spot. Under the conditions, the infrared distance will be shortened by several times. If the scene is a garden lawn, the infrared effect is even worse.
Step 4: Is it wired or wireless
In addition to the expensive price, the wireless network does eliminate the troublesome and unattractive camera wiring, but it needs to pay attention to distance and obstacles. In principle, cement and building materials will shorten the wireless transmission distance. Metal materials will completely block the wireless signal. The transmitter (on the camera) and the receiver (on the host) should be far away from other electrical appliances to avoid interference. If you want to use a wireless network, , there must be more than 2 times the price of preparation. We recommend using wired transmission as much as possible unless necessary.
Step 5: Site Monitoring and Network Monitoring
When you determine the monitoring system, you need to consider whether you need the network function. That is to say, if you need to monitor and control the monitoring site at any time on the Internet, you need to select a host with network function.
Security monitoring equipment selection guide
1, system upgrades and maintenance convenience. Due to the large scale of the system, the system software and core equipment should have automatic upgrade and maintenance functions. In addition, the security monitoring system consists of a number of complex systems, including networks, storage, operating systems, platform software, various front-end devices, etc. It is required that each subsystem should have a working log record, including system modules and core equipment.
2, practicality. The system should take into account factors such as local environmental conditions, monitoring objects, monitoring methods, maintenance, and investment scales to meet the needs of the normal operation of the monitoring system and social public safety management.
3, scalability. Should adopt the distributed system and the modular structure design, in order to meet the system scale expansion, the function expansion, the matching software upgrade demand. Users can expand or tailor the system as needed to provide sufficient flexibility.
4, Reliability (Reliability) and stability. The system should use mature technologies and reliable equipment, and have backup or redundancy measures for key equipment. The system software has maintenance support capabilities and strong fault tolerance and system recovery capabilities to ensure that the system runs as long as possible, and can be repaired or restored as soon as the system fails.
5, the system's management capabilities and ease of operation. Considering the scale and complexity of the networked system, the management software platform should have a good system architecture. The system core management and business management must be clearly separated to ensure that they meet different application requirements. Due to the large number of various management servers, storage and forwarding servers in the system, the network management functions of the system must be powerful. Otherwise, routine maintenance cannot be performed. The management and user interface provided by the system should be clear, concise and friendly, and the operation should be simple and convenient. Flexible, easy to learn and use, easy to manage and maintain.
6, performance and price ratio. The designer should reasonably set the system function, correctly configure the system and select the equipment. Under the premise of good grades of key equipment, the overall price of the system is guaranteed to be low, so that the system has a higher cost performance.
7, compatibility and standardization. Compatibility is the key to interconnecting devices from many different manufacturers and protocols. The system should be able to effectively communicate and share data, as far as possible to achieve device or system compatibility and interoperability. The higher the degree of standardization of the system and the better the openness, the longer the life cycle of the system. Control protocols, transmission protocols, interface protocols, video/audio codec, and video/audio file formats, etc., should all comply with the requirements of the corresponding national or industry standards.
8, advanced and inherited. The construction of the monitoring system is impossible to abandon the original simulation-based system. The proper approach is to include the original simulation system as far as possible on the premise of planning a fully digital system. The ideal system is a seamless connection between the two to form a complete security monitoring system.