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How to choose a uhf rfid card reader? How does it work?

October 01 , 2022

How to choose a uhf rfid card reader? How does it work?

sales1@s4a-access.com


RFID is the English abbreviation of Radio Frequency Identification. In layman's terms, an RFID reader is an automatic identification device that can read electronic tag data. According to the frequency of reading tags, it is divided into low frequency, high frequency and ultra-high frequency card readers. The rfid card uhf needs to be equipped with an RFID antenna to read the tag information.


Introduce


RFID is the English abbreviation of Radio Frequency Identification. In layman's terms, an RFID reader is an automatic identification device that can read electronic tag data. RFID radio frequency identification is a non-contact automatic identification technology. It automatically identifies target objects and obtains relevant data through radio frequency signals. The identification work does not require manual intervention and can work in various harsh environments. RFID technology can identify high-speed moving objects and identify multiple tags at the same time, which is fast and convenient to operate.


"First, it can identify a single very specific object, instead of only identifying one type of object like a barcode; second, 10dbi uhf rfid antenna,it uses radio frequency, which can Data is read through external materials, while barcodes must rely on lasers to read information; third, multiple objects can be read at the same time, while barcodes can only be read one by one. In addition, the amount of stored information is also very large"


Soft ferrite


When the antenna of the non-contact IC card reader/writer is in an environment with a lot of metal substances, installing a plate made of ferrite material on the back of the antenna can reduce the impact of metal substances on the card reading performance and stability. Soft ferrite is easy to cut, but its performance is not as good as that of hard ferrite. The thickness is 1.7mm, the size can be cut arbitrarily, and the frequency range is wide.


Hard ferrite


When the antenna of the non-contact IC card reader/writer is in an environment with a lot of metal substances, installing a plate made of ferrite material on the back of the antenna can reduce the impact of metal substances on the card reading performance and stability. Hard ferrite is cumbersome to manufacture, requires mold opening and machining, but has good performance, is hard, cannot be cut, needs to be customized in size, and has better properties than soft ferrite.


Principle


The basic working principle of rfid tag passive uhf ,RFID technology is not complicated: after the tag enters the magnetic field, it receives the radio frequency signal sent by the reader, and transmits the product information (Passive Tag, passive tag or passive tag) stored in the chip with the energy obtained by the induced current. , or actively send a signal of a certain frequency (Active Tag, active tag or active tag); after the reader reads and decodes the information, it is sent to the central information system for related data processing.


The rapid rise of radio frequency identification technology (RFID) is not only the result of technological development, but also the embodiment of application requirements. Since the 1990s, various applications around RFID have sprung up like mushrooms after a rain. Today, we will briefly introduce RFID technology and its most important product - uhf rfid reader.


Division of frequency bands


In the field of radio frequency, electromagnetic waves are divided into 6 parts by frequency. The main frequency bands of RFID: low frequency, high frequency, ultra-high frequency and microwave.


Low frequency (30~300kHz)


Common operating frequencies are low-frequency 125kHz and 134.2kHz. Low-frequency RFID is mainly used in short-distance, low-cost applications, such as access control, campus cards, gas meters, water meters, etc.

rfid access reader

High frequency (3~30MHz)


The high-frequency HF RFID equipment works in the 13.56MHz frequency band. The system transmits energy through the inductive coupling of the antenna coil, and the magnetic field energy decreases rapidly through inductive coupling. The magnetic field signal has distinct read area boundaries. It is mainly used to identify people or items within 1 meter. It mainly follows two protocols: ISO/IEC14443 (A, B) protocol, ISO/IEC15693 protocol.


ultra-high frequency(825MHz--905MHz) for UHF car access control system

uhf rfid 20 meter rfid reader


Contact Us
  S4A-Security For All.S4A Industrial Co., Limited, Founded in 2010, We have been dedicating in access control production R&D and sales for 10year till now. With the belief that we do one thing well in a lifetime, our CEO has been in this industry for 15 years. During the past 10 years, our products have been exported to various countries and regions. And 90% of customers come from the recommendations of cooperative customers, and 80% of the turnover comes from cooperative customers in the past 10years.Your business is a plant, we are the gardener, our mission is to water and fertilize the plant, and make it become the towering tree. We attach great importance to the partner's appeal, customer's suggestions, and feedbacks. To strengthen Product quality awareness, client's service awareness. Our clients and S4A are on the same path walking for many years.       S4A's future would be even more brilliant, this is related to all of our staff's working sweat. When you join this team, you will feel an invisible power to drive walk forward. S4A mainly produces a series of security Door Access Control such as:Network Access Controller, Locker board, Electromagnetic lock, Standalone door Controller, Automatic door opener, etcOur team can manufacture products, sell products, and do after-sales.In the realm of access control, one company stands out for its unwavering commitment to providing security services for everyone. S4A, which stands for "Security for All," has been at the forefront of access control technology for the past 13 years. With its own state-of-the-art factory and a strong focus on research and development, S4A has continuously delivered cutting-edge access control machines with the latest functions. Their dedication to product quality, customer feedback, practicability, and cost performance sets them apart as a leader in the industry.Factory and R&D Expertise:S4A takes pride in its fully-equipped factory, where skilled engineers and technicians work tirelessly to develop and manufacture access control solutions that meet the highest standards. The company's investment in research and development has resulted in a steady stream of innovative products that cater to evolving security needs.By staying ahead of the curve, S4A ensures that their customers have access to the latest advancements in access control technology.Quality Assurance and Customer Feedback:At S4A, product quality is of paramount importance. The company adheres to rigorous quality control procedures throughout the manufacturing process to guarantee the reliability and durability of their access control machines. Each product undergoes comprehensive testing to ensure it meets industry standards and exceeds customer expectations. S4A also places great value on customer feedback, actively seeking input to continuously improve their products and services. By listening to their customers, S4A maintains a customer-centric approach and delivers solutions that address real-world security challenges.Practicability and Cost Performance:S4A understands that access control solutions must not only be technologically advanced but also practical and cost-effective. The company's emphasis on practicability means that their products are designed to be user-friendly, easily integrated into existing systems, and adaptable to various environments. S4A's access control machines are known for their intuitive interfaces, simple installation processes, and seamless compatibility with other security systems. Additionally, S4A strives to provide cost-effective solutions without compromising on quality. Their competitive pricing ensures that security is accessible to businesses and individuals of all sizes.With 13 years of industry experience, S4A has cemented its position as a leading provider of access control solutions. Through their dedication to "Security for All," the company has set a benchmark for excellence in product quality, customer satisfaction,practicability, and cost performance. S4A's in-house factory and research and development capabilities enable them to stay at the forefront of technological advancements in the field of access control. As the company continues to evolve and innovate, S4A remains committed to empowering individuals and organizations with the highest level of security, ensuring that everyone can enjoy the peace of mind that comes with a reliable and efficient access control system.We can create value for you!Quality takes great importance for a company's credibility, and buyer's every penny spend must worth it. That is our most basic principle. Our business mainly for wholesale, so we could offer large quantities at competitive prices. During the past 10 years, We work hard to create value for our customers, and with our help, customers have an increasing market share. 99% of the customer...<
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