First, solar power technology introduction
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In the current global energy shortages and soaring prices, many countries have adopted preferential policies to encourage the development and application of solar technology. As a high-tech, solar power supply technology was first used in high-end applications such as aviation exploration. With the promotion of various countries, solar power supply technology has also been developed with each passing day. Solar power generation and solar power supply technology are increasingly entering civilian applications. In forests, roads, rivers, mountains and other communication or audio and video electronic equipment applications, mainly power grid and battery power supply methods, battery power can often only solve the temporary needs, can not be used as a long-term power supply; Many disadvantages:
1. The power supply mode is cable transportation, which is difficult to construct and costly;
2, system maintenance is inconvenient, high-voltage transmission has potential safety hazards, high operating costs;
3. Installation and networking are difficult.
The solar power supply system does not need water, oil, steam, fuel, and can generate electricity as long as it has light. It is clean and pollution-free renewable energy, and it is easy to install and maintain, has a long service life, and can be unattended. Favored by people, it is the leader of new energy. In recent years, the application of solar energy has become more and more widespread all over the world. Especially in the field, solar power systems are gradually replacing some traditional power supply devices and are getting more and more popular applications.
The solar cell array converts solar energy into electrical energy during a clear day, charging the load while also charging the battery pack; when there is no light, the battery supplies power to the load. The solar power supply system is composed of a solar cell array composed of a solar cell module, a solar charging control device, an inverter, and a battery pack.
Solar Panel Array Assembly â— The surface of the solar panel array is made of composite material and laminated by an imported laminator. Good air tightness, weather resistance, corrosion resistance and good mechanical strength.
â— The solar cell is a monocrystalline silicon solar cell, and the solar cell has high conversion efficiency. Moreover, the solar panel array has good performance at one time.
â— When the solar cell is manufactured, it is chemically treated first, and the surface is made into a pyramid-like suede, which can reduce reflection and better absorb light energy.
â— Double gate lines are used to make the package of the module more reliable.
â—The solar panel array has good impact resistance and meets IEC international standards.
â— Double-layer EVA material and TPT composite material are used between the solar panel array layers. The components have good air tightness, moisture resistance, good UV resistance and are not easy to age.
â— ABS plastic junction box, good resistance to aging, water and moisture.
â— With bypass diodes can reduce damage caused by local shadows.
Charge and Discharge Controller â— The intelligent controller can control the multi-channel solar cell array to charge the battery pack and realize the battery to supply power to the load.
â— Adopt advanced step-by-step current-limiting charging method to automatically control the parallel or cut-off of multi-channel solar cell array according to the change trend of battery pack terminal voltage, which can fully utilize valuable solar battery resources and guarantee The battery pack works safely and reliably.
â— Battery pack over-discharge protection.
â— Battery pack overcharge protection.
â— Solar battery, battery, and load reverse connection protection.
â— Solar battery anti-back charge function.
â— Solar battery charging control function.
â— Load power control function.
â— Provide RS232 and RS485 communication interfaces for remote and near-end monitoring.
Battery Pack â— The battery pack is an indispensable part of the independent solar power supply system, because the solar power supply system itself has only photoelectric conversion. In order to solve the synchronization and energy storage effects of solar power supply, to meet the normal power supply during rainy days and nights, a reasonable battery pack must be provided.
â— The battery capacity should be able to guarantee the longest continuous rainy day.
Second, solar power wireless communication and video surveillance solutions
ZD has developed a solar-powered wireless communication and video surveillance system based on customer needs. The system uses solar power for power supply, and adopts the international standard 801.11a OFDM wireless technology for transmission. The system can get rid of the restraint of the cable, realize quick installation, short construction time, low input and good effect. This system can get rid of the special geographical environment such as mountains, forests, rivers, open areas, etc., without having to consider the wiring and construction problems of power lines and communication cables, and completely solve the difficulties of long wiring engineering, high construction cost or even impossible to achieve, especially Suitable for forests, mines, water conservancy, border areas, roads, oil fields and other departments, the application of rapid construction of centralized monitoring systems, but also to the needs of wireless monitoring of construction sites, tourist attractions and other important places.
The advantages of this solar-powered wireless communication and video surveillance system are as follows:
1, using solar energy independent power supply, wireless transmission, thorough wireless;
2, the components are flexible, compact, easy to install and network;
3, AC and DC power supply mode to meet the needs of a variety of load power;
4, good security, low maintenance costs, low cost;
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