Thunderstorm season ** security monitoring how to mine?

In the construction of hospital security projects, for the application of cameras, in addition to other security projects in the floor hall, the main entrances and exits and entrances and exits to install cameras to monitor access personnel and vehicles, in its internal, such as: key operating room, registration, charges A corresponding number of cameras should also be set up in the financial department, the main control room, the intensive care unit, the pharmacy, and the drug store. Camera monitoring has a wide range of applications in hospitals. In the season when thunderstorms occur frequently in summer, how to prevent lightning becomes an indispensable course for hospital security.

The image signals collected by the cameras are transmitted to the duty room of the hospital through the coaxial video cable, and the video layer is displayed on the TV wall of the main control room through the switching of the matrix switcher. Another security guard, dean, vice president can be set up in three separate locations. In addition, it is also possible to use the network to transmit video signals. In this way, the equipment can be connected more easily and the integration of various systems is facilitated. This is the development trend of hospital security engineering in the future. For the application of IP cameras, taking into account the relationship between the cost, while taking up a large amount of bandwidth, excessive use will put pressure on the network, affect the transmission of other business data, and take up a lot of hard disk space, so you can according to need in the front gate The operating room and other places require high-definition images, smart identification functions, and places where the site is inconvenient to re-lay the line.

The lightning protection of the hospital security monitoring system should consider the lightning protection work of the system when integrating so many devices. The lightning protection design of the hospital security system includes four parts: lightning protection, video signal lightning protection, control signal lightning protection and grounding.

Most of the electronic equipment is damaged due to lightning strikes, and most of the equipment is damaged due to the induction of lightning to the power supply. According to the requirements of GB50174-93 "Computer Room Design Specification" and GB50057-94 "Lightning Protection Design Specification for Buildings", a large number of important computer equipment centers such as the central computer room should be designed with more than two levels of power supply lightning protection. For the lightning protection of the hospital security system, the secondary lightning protection is designed and established: The first level protection is at the incoming end of the main distribution cabinet of the equipment room. The design uses reinforced power surge arresters, and the second level protection is the UPS incoming power supply in the equipment room. Side, designed using a standard type of power arrester.

The system is designed to install a video lightning arrester at the front of the camera. When the overvoltage phenomenon occurs in the video signal, the arrester momentarily turns on to ensure the security of the front camera and the end matrix host.

The system control circuit adopts a shielded control cable. The shield of the control line is repeatedly grounded at the joint and the end of the control line. The control line enters the signal lightning arrester after entering the control room. When the control line has an inductive lightning overvoltage, the lightning arrester momentarily turns on. Directing excess charges to the earth ensures the safe operation of the front-end decoder and the end matrix control host.

According to GB50057-94 "Lightning Protection Design Code for Buildings" and JGJ/T16-92 "Electrical Design Code for Civil Buildings", the grounding electrode of all equipment in the control room shall be grounded. The specific grounding method is: a branch line from the common grounding trunk is connected to the central engine room, the busbar is installed in the equipment room, the power supply is grounded, the static electricity is grounded, the lightning protection is grounded, and the equipment shell ground is grounded. Rows, firmly connected to ensure the safety of electrical equipment and personnel.

Image storage of hospital security monitoring system Based on the digital storage technology of hard disk video recording system after several years of development, technology has been fully mature so far, a good solution to traditional image storage and playback and other technical problems. Digital hard disk video recording systems not only have low storage costs and high efficiency, but also have the advantages of network transmission, remote transmission, and cyclic storage. At the same time, advanced technologies such as digitalization and transmission networking of hard disk video recording systems can be linked with systems such as anti-theft alarms to provide timely and accurate feedback on site information and provide adequate and reliable evidence for alarm events.

Although the digital video recording system solves many shortcomings of the analog system, the digital video recording system is not perfect. For a certain number of monitoring points, relying on a single digital video recording system cannot solve the problem well. The system and simulation system are implemented in combination, so different actual conditions should be treated differently to obtain the optimal system solution.

Therefore, when designing a security system, it is necessary to base on the basic needs of the system, and to take the rationality, safety, reliability, mainstream product, low cost and low maintenance as the starting point, and to provide advanced, safe and reliable hospitals. Efficient system solutions.