Security industry seeks new ideas for energy conservation and development

In the increasingly grim situation of global energy issues, “electricity shortage”, “coal shortage”, “oil shortage”, and “water shortage” have all sounded the alarm one after another. The energy crisis has become increasingly prominent, and the world has set off a continuous In the wave of energy conservation and environmental protection, all countries are engaged in a green and low-carbon industrial revolution. More and more enterprises are participating in the research and development, production, and application promotion of energy-saving and environment-friendly products. Security products are all microelectronic products. These devices have features such as high density, high speed, low voltage, and low power consumption. The rapid development of security technology, the promotion of the construction of "Safe City", the emergence of millions of high-definition video surveillance equipment, and the massive storage requirements ... have made the security industry seek new ideas for energy conservation and development.

What is security? Energy conservation and security are reflected in two aspects: first, development and production of energy-saving products, and second, by changing the power supply to achieve energy-saving applications. Energy-saving products can be understood as low-power products, which can achieve energy-saving effects by reducing the power consumption of products. The transformation of the power supply mode is the use of wind power, solar energy and other renewable environmental protection energy sources to reduce the dependence and consumption of traditional energy sources such as coal, petroleum, and reduce the cost of traditional energy inputs to achieve environmental protection and energy conservation. The following examples illustrate how security products or security industry can achieve energy saving and environmental protection.

With the implementation of large-scale projects such as “Safe City”, video surveillance systems have become increasingly popular and large-scale, and their demand for data storage is also increasing. As a result, hard disk manufacturers have successively introduced products with larger storage capacities and hard disk capacities. The larger the energy consumption required, the more it will increase. Usually, 1 to 8 hard disks are to be installed in the DVR. For monitoring systems that require long-term image storage, 8 hard disks are usually installed. If you have 8 hard drives working at the same time, there will be considerable energy consumption. The current DVR and hard disk technology adopts hard disk hibernation technology. Under normal circumstances, only one hard disk is used for read and write operations, and other hard disks are in a standby state. Only when a hard disk needs to be switched to wake up a specified hard disk, this technology not only achieves The purpose of saving energy, and can greatly extend the life of the hard disk (extending the hard disk life is also energy-saving environmental protection). In addition, the power consumption of the existing 1TB hard disk is usually higher than 13.5W. Now the green energy-saving hard disk technology can save 4~5W of power compared with the conventional hard disk, and the performance remains stable.

Now, highways, outdoor unattended base stations, outdoor power towers and other fields will use wind-solar hybrid power generation systems to provide power for relatively low-power electronic devices, such as field monitoring cameras, microwave transmission equipment, etc., and can be designed for monitoring and transmission equipment. DC12V or DC24V power supply is matched with the DC power supply of the wind power generation system, so that the inverter or the transformer can be omitted and the energy consumption of the conversion equipment is not available.

The appearance of fingerprint access control allows the identification of the authorized person to be realized only by a finger contact. If the biometric access control system can be popularized, it will certainly make extraordinary contributions to energy conservation and environmental protection. After all, it is actually reducing a large number of access card production, which greatly eases the environmental pollution and energy consumption of discarded access cards.

The emergence of LCD splicing screens has transformed the video surveillance display system from the original high-power DLP screen to a new type of energy-saving and environmentally-friendly LCD splicing screen; the emergence of LCD monitors has gradually replaced the traditional CRT monitor, not only its power consumption. It is greatly reduced, and the amount of raw materials is also reduced in the manufacture of the device housing, which not only saves the industrial raw materials required for product manufacture, but also reduces energy consumption and manpower in the production process.

Now, global energy conservation has become a consensus. In the future, energy conservation will become a new indicator to measure the technical content of security products. The facts prove that this market trend has become very obvious. The future development of energy-saving security can be divided into internal and external factors. The internal factors are to start from the industry products, achieve energy conservation, and achieve environmental protection. Manufacturers, as subjective agents, must understand the significance of energy conservation and environmental protection, make products produced by R&D truly energy-efficient, and promote the sound development of energy-saving and environmental protection. External factors are the use of wind energy, solar energy and other new energy technologies to provide working power for the security system to achieve energy saving and environmental protection.

Most regions in China have abundant wind energy and solar energy resources, providing necessary environmental conditions for the promotion of wind and light energy-saving products in the security industry. With the further advancement of energy conservation and environmental protection, the rapid development of security industry technology and the improvement of energy-saving and environmental protection performance of security products, security and energy conservation are bound to go a step further.

The application of energy-saving security in highway monitoring The freeway street light system started construction now makes full use of green clean energy, and is powered by wind-solar hybrid systems, achieving zero power consumption, zero emission and zero pollution. Complementary wind and solar power refers to the complementary generation of wind energy and solar energy. This system uses solar cell arrays and wind turbines (converts alternating current into direct current) to store the electric energy generated by wind and solar power generation into the battery pack. When the user needs electricity, the inverter The device converts the stored DC power in the battery pack to AC power, which is sent to the user's load via the transmission line.

Wind-solar hybrid power generation system has the characteristics of no need to lay long-distance transmission lines, no need to excavate the road buried pipe, no power transmission, etc. Its unique advantages are prominent in the lighting areas such as urban roads and highways. The weather is bright in sunny days and windy in rainy days. In the summer, the sun is strong and the winds are strong in winter. It uses the complementarity of solar energy and wind energy to generate electricity through solar energy and wind energy integrated systems, stores electricity during the day, and provides street lighting through intelligent control systems at night. powered by. The wind-solar hybrid road lighting system embodies the concept of environmental protection and energy saving. The one-time investment is roughly the same as that of the conventional power transmission line-type circuit lighting system, but the funds invested by the wind-solar hybrid system can utilize the inexhaustible wind energy and solar energy to provide stability. Reliable electric energy has both obvious economic benefits and energy saving and environmental protection effects.

Considering energy conservation and environmental protection, DC12V or DC24V power supply equipment may be considered for the expressway monitoring equipment, so that the DC power of the wind power generation system can be directly used. For highway monitoring needs, security companies have launched energy-saving integrated high-speed PTZ cameras, which support DC24V power supply, the average daily power consumption of about 1000W (including cameras, lenses, PTZ, wipers, optical transceivers, heaters and fans, etc.) . Considering the power consumption of the integrated PTZ camera, the scenery conditions of the installation site, the average value of the annual sunshine, the average value of the wind, and related experience, the appropriate wind power generation system can be selected. For example, for the above-mentioned integrated PTZ camera, a wind turbine with a rated power of 500 W may be selected. The generator has a wind wheel diameter of 1.4 m, 5 blades, a starting wind speed of 2.4 m/s, a cut-in wind speed of 3 m/s, and a rating. Wind speed 12.5m/s; It can use solar panel monocrystalline silicon material, conversion efficiency ≥ 15%, open circuit voltage = 21.6V, optimal operating voltage = 18V, short circuit current L = 6.6A, optimal operating current = 5.56A , Peak wattage = 100W, annual solar radiation is 112.0 kcal/cm. According to the conversion, the average daily peak sunshine number is 4 hours, and the average daily power generation of a single solar panel is about 240W. h, according to the fan's monthly power generation, under the premise of ensuring the quality of power supply, calculate the optimal peak value of the solar panel wattage, use five 100W solar panels to form a matrix. Sealed lead-acid battery 12V/200Ah total 5 groups. The above design can guarantee the power consumption needed for a windless and dull 7-day integrated PTZ camera.

Energy-saving security power transmission line monitoring solutions High-voltage transmission lines and ancillary equipment are the lifeline of the power system. Once a failure occurs and problems arise, it is difficult to ensure the normal supply of electricity. In view of this situation, the power system requires remote monitoring of transmission lines, towers, and related equipment. It is necessary to remotely monitor in real time illegal actions such as excavation and dredging under power towers that cause damage to the tower base; it is possible to monitor humans for stealing tower steel angle pairs. Taki caused damage; can monitor the status of the line remotely, improve the inspection quality of the line, and greatly reduce the workload of inspection personnel; in the forest area, the threat of tree growth to high-voltage power transmission lines can be monitored; Theft of high-voltage steel towers for molecular alert and video surveillance, and has a voice warning deterrence function.

Due to the particularity of the power system, the power supply of the video surveillance equipment cannot be powered at a high voltage of 110 KV. Although the power monitor can achieve high voltage power, the monitor power is too small to meet the video surveillance, alarm system, and language. System requirements. Moreover, the power tower is very high (typically 35 meters or more) and it is impossible to build high-power solar panels and large-scale wind turbines. Therefore, the selected video surveillance product must be required to be an energy-saving and environmentally friendly low-power product. For example, a 36-fold power system dedicated network intelligent high-speed ball developed by a company uses DC12V power supply. The high-speed ball motor adopts a DC high-efficiency motor, and the heating strip also uses a low-power and high-energy type.

The total power of the camera, lens, head, heater, and fan is less than 30W. Supporting alarm detectors, voice intercoms, and pre-alarm siren devices also use low-power products, and the total power of alarms and voice equipment is less than 20W. Considering the problem of signal transmission, the system uses two methods to implement. One is the use of 3G networks to erect 3G transmission equipment developed by the company on the towers in the near-city area, which can transmit required video, alarm signals and speech signals. In another area where there is no coverage of 3G and GPRS signals in the mountains, remotely directed microwaves are used to transmit signals to the back-end substations. The power supply of the front-end equipment adopts the wind-solar hybrid power generation system, which operates around the clock and ensures the total power consumption required for windless and lightless seven-day monitoring, alarm, and voice.

In the back-end management center, substations are connected to the power supply bureau private network. Taking into account the energy saving and environmental protection of the back-end equipment, instead of using the previous server plus disk array method, a new mass storage system for enterprise-grade video surveillance dedicated to environmental protection products is adopted, which can provide 2 to 4 Gbps (expandable) transmission bandwidth and a single module. Up to 48TB of storage space. The system integrates the video monitoring codec data download software, which can directly connect the video surveillance codec to achieve direct download of monitoring data. At the same time, the video data retrieval and playback function of the system can allow the monitoring client platform to download and play back video data on demand, and optimize the video stream according to the characteristics of the video stream, which can carry the writing of multiple concurrent monitoring streams. The system uses RAID technology, hot swap hard disks, dual Gigabit Ethernet ports, redundant hot spare power supplies, and intelligent control fans to effectively protect user data security.

The system can operate directly on the Ethernet network and is fully compatible with existing Ethernet infrastructure and existing network management software. It does not require proprietary network equipment and provides an extremely economical, high-performance video surveillance network storage solution. Program. After the hard disk hibernation technology is used in the system, only the hard disks that need to work are powered on. All other hard disks are hibernated. Only when the hard disks need to be switched are used, the specified hard disks are awakened. The hard disks that do not perform read/write operations are still in the sleep dormant state, achieving the purpose of energy saving. . At the same time, the system also saves management servers, streaming media servers, storage servers, disk arrays and other equipment, also saves equipment configuration and reduces the loss of electrical energy, to achieve the purpose of energy conservation and environmental protection.