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Solar street light controller has many types, there are common type of split controller, built-in boost constant current control integrated controller, built-in buck constant current control integrated controller, there are plastic shell waterproof class IP32 controller, waterproof class IP68 Full waterproof street light controller. Today I will tell you about the way by charging, solar controller can be divided into PWM type controller and MPPT type controller.
 

With the rapid development of Internet technology and barcode technology, under the existing technical conditions, the combination of RFID technology and the construction of digital archives, building a highly efficient and highly modernized archives has become possible.
 
File management system based on RFID technology consists of a central database and terminal manager, which is the system's data access center and information input and output terminals. The terminal manager includes RFID tags, RFID gate reader, handheld terminals, RFID reader writer and other devices integrated with RFID function. The function of RFID writer device is to write the information in the database into the label into the database. The RFID handheld reader is the hardware that the administrator collects and communicates on-site information. Card issuer role is to complete the issuance of librarian privileges card function.

The dream of an extremely flexible production structure would be that workstations are standing freely in the production hall grouped by certain production functions. The orders would navigate autonomously from workstation to workstation guided by their own working plans and by both efficiency and engineering KPIs. They would communicate as cyber-physical systems with both, the working stations and the entities providing the necessary material.
If the workstations were also designed to include redundancy, the flexibility would increase a lot. The Industry 4.0 scenario offers the opportunity of digitalizing objects via the RFID technology and connecting self-organizing orders and workstations.
 

With so many options and specifications available when considering handheld terminals and mobile computers for your enterprise, it is helpful to know some of the key features from which to choose from.
 

Solar street lamp project includes solar street light controller, battery, solar panels, light pole, light source, which solar panels generally life is 15 to 20 years, light pole is almost bad, light source life can be up to 8 years, solar street light Controller and battery warranty period General manufacturers commitment is 2 to 3 years, that is, in the entire solar street light system, the solar street light controller and battery are vulnerable products.
 

At present, many industries have used RFID technology. RFID technology is closely related to the security industry, RFID technology plays an important role in applications such as intelligent transportation, intelligent parking, intelligent access control, RF anti-theft and other products and solutions.
Intelligent parking
With the vigorous development of the intelligent city, parking becomes an urgent problem need to solve, the importance of intelligent parking more and more prominent. The most common application for parking is automatic parking barrier system. An authorized cars would be tagged with an UHF RFID label, while moving towards barrier boom, the long distance RFID reader could identify the label and open the gate. Moreover, automated technology helps car drivers quickly find a usable parking space and provide drivers with precise navigation routes.
Intelligent transportation
RFID technology in the field of intelligent transportation is an important carrier of automotive electronic logo, also known as electronic license plate, is combination of UHF RFID technology and other related technologies. Based on the RFID technology of urban electronic transport system can adapt to a variety of mining environment, in the low visibility, multi-lane vehicles under normal driving speed can still be accurately identified to enhance the real-time and accurate urban traffic management, urban traffic more scientific , Intelligent.
Anti-theft management
RFID car anti-theft using RFID linkage camera tracking video, associated with binding the audit through the electric bicycle vehicle information and RFID tag, in each road and bayonet install fixed RFID reader, when the vehicle through the reader. The vehicle information will be automatically read and reported to the background, according to the platform to achieve real-time traffic, track playback, real-time video, associated video, alarm and other functions.

Not all of the RFID reader devices with same specification, because different environmental conditions. So how to choose an ideal RFID reader products for your projects? First of all to understand the four parts of RFID system: tags, RFID readers, antennas, management software.
1. Distinguish what RFID protocol
If the reader is different from the label protocol, the tag will not be read. Commonly used protocols are 18000-6B, 18000-6C or EPC-GEN2. Each protocol has different characteristics and is suitable for different applications. If an RFID tag already exists, it must be determined that the selected reader is supporting the electronic tag. For RFID tags that have multiple protocols at the same time, RFID readers are required to support multiple protocols at the same time.
2. How many labels and data to read each time
Due to the different applications, the number of labels required to read is also different. Sometimes need to read only one label at a time, sometimes need to read more than one label, and the amount of data per label is relatively large. Different manufacturers and models of RFID readers in reading multiple labels and a lot of data in this regard is relatively large, especially once read a lot of data, read the speed will directly affect the performance. Hopeland’s fixed RFID reader could read 400pcs of labels one time and store over 100,000pcs of data offline.
3. Antenna matching
RFID readers have 2 types, hand-held and fixed, for the need of moving will choose handheld RFID reader terminal. For those who do not need to move, fixed RFID reader. Handheld terminals and antennas are basically one, you need to select the antenna efficiency of the reader. In some intelligent patrol, warehouses and other occasions, you could choose RFID reader handheld, to facilitate mobile reading information.
For fixed readers, sometimes need to consider multiple directions of the antenna, to select the reader can work with multiple antennas, in order to facilitate the installation of all directions to ensure that the label can be read, so the choice of the antenna is also very important.
 

The U.S. residential photovoltaic solar industry is booming in two, creating a new world record of the annual total installed capacity. At present, the United States residential photovoltaic solar installed capacity ranked third in the world, after Japan and germany. The cost of residential PV systems in the United States is about 2 times the cost of other mature markets. The U.S. residential solar market competition pattern has some special, mainly occupy more than 50% market share in the large-scale suppliers; four States accounted for the total installed capacity of more than 80%, of which the vast majority of owners for high income earners. Indeed believes that in the next few months, the solar industry is expected to become the largest energy industry employer. In January, there was news that the number of jobs in the solar power sector in the United States has exceeded the number of jobs in the American oil and gas industry.
 

In recent years automatic identification procedures (Auto ID) have become very popular in many service industries, purchasing and distribution logistics, industry, manufacturing companies and material flow systems. Automatic identification procedures exist to provide information about people, animals, goods and products.
 
RFID technology uses radio frequency signals, can be completed without physical contact automatic identification. RFID does not need to align the object itself, the use of a dedicated RFID reader and can be attached to the RFID unit to the target items, RF signals from the RFID unit of information transmitted to the RFID reader to identify the multiple targets simultaneously.

Today's society, high productivity, product is extremely rich, science and technology in rapid development, however, the profits that enterprises get through increase productivity, abundant products, improving quality, using advanced technology are more and more limited.
 
A typical RFID system generally consists of three parts: tags, RFID readers, antennas. Antenna transmits radio signal between tag and reader; Tag is made up of components and chips, and each tag with a unique electronic code, attached to the object to identify the target object.