RFID refers to the transmission of data between RFID tags and RFID readers through remote wireless means. With the development of technology, RFID technology has been increasingly used and maintained rapid growth.
The difference between RFID and low-power wireless communications
RFID (Radio-Frequency Identification, Radio Frequency Identification) and low-power wireless communication are two different wireless communication technologies. They have many differences in applications, working principles and characteristics.
RFID (Radio-Frequency Identification):
Purpose: RFID is mainly used for automatic identification and tracking of objects, and is usually widely used in logistics, inventory management, item tracking, access control, payment systems and other fields.
How it works: An RFID system usually consists of a tag (or tag) and a reader. The tag contains a chip and an antenna that can receive and transmit radio frequency signals. The reader sends a request signal to the tag, and the tag receives and replies. This working principle makes RFID tags available in two types: passive (no built-in battery required) and active (built-in battery).
Communication range: The communication range of RFID is usually relatively short, usually between a few centimeters and several meters, depending on the tag type and frequency.
Power Consumption: Passive RFID tags consume very low power because they receive energy from the reader and do not require their own power source. Active RFID tags use built-in batteries and therefore consume higher power.
Low power wireless communication:
Purpose: Low-power wireless communication is usually used for data transmission and communication, and is suitable for applications such as the Internet of Things (IoT), smart devices, and sensor networks.
Working principle: Low-power wireless communication can use different technologies, such as LoRa, NB-IoT, Zigbee, etc. These technologies typically involve communication between devices, such as from a sensor to a gateway or from a device to a cloud server.
Communication range: Low-power wireless communication technologies generally have larger communication ranges, ranging from several kilometers to tens of kilometers, depending on the specific technology and deployment.
Power consumption: Low-power wireless communication technologies usually focus on reducing the power consumption of the device to extend battery life. This means the device can go into sleep mode when idle and only wake up when needed to transfer data.
RFID system consists of three parts: RFID tag or smart tag, RFID reader and antenna.
Radio frequency identification communication principle:
RFID tags are used to transmit data to RFID readers, and then the RFID readers convert radio signals into usable data. The readers transmit the data obtained from the tags to the computer system through the communication interface, and the data can be stored in the database for future reference. We extract and use the data when we need it, and we can also connect the data interface to the smart screen, so that we can implement some real-time monitoring applications.
RFID systems are mainly divided into three types according to communication frequency:
Low frequency (LF) RFID: The low-frequency RFID system operates in the 120~150KHz frequency band. At the same time, the low-frequency RFID system has a short communication range (0.1 meters) and a slow data transmission rate, making it suitable for low-speed and short-range communication applications.
High Frequency (HF) RFID: High frequency RFID systems operate in the 13.56MHz frequency range and can communicate at a distance of up to 1 meter.
Ultra-high frequency (UHF) RFID: Its operating frequency range is 860~960MHz, and the communication range of the UHF RFID system can reach 12 meters.
Common applications:
Achitechive
In construction and other construction-related industries, building materials are often the most expensive in projects, so the application of RFID technology in large construction sites can easily locate material quantity issues. The application of RFID technology can monitor the location and quantity of materials to ensure material safety.
Aerospace applications
Applying RFID technology to the aerospace field can simplify many supply chains and passenger baggage tracking. In air transportation, whether it is passenger transportation or freight transportation, goods often move on the plane, and real-time monitoring of the goods is very troublesome. If we place RFID readers in the cargo hold and electronically tag all goods, we can confirm the status of the goods in real time.
Healthcare and Medical Industry
We will have similar needs in the medical care field. We can monitor drugs in real time, understand the quantity of goods in real time, and prevent the goods from being lost inexplicably; we can also place RFID tags in the patient's wristband so that the doctor can scan and confirm. Patient personal information and medical record information.
Warehousing and transportation for the food industry
Product tracking of a single order of magnitude is beneficial to many industries, especially in the retail industry, which is more suitable for the deployment of RFID products. We can track goods in the entire supply chain while tracking the transportation status of the goods throughout the supply chain, just like In current self-service vending machines, when customers open the cabinet door and take out the goods, the vending machine automatically recognizes the products purchased by the customer and calculates the price, which can save the cost of manual vending and is suitable for large-scale deployment applications.
Car and bicycle rental industry:
The shared bicycles and cars we rent can also use RFID technology to detect vehicle returns. We only need to install an RFID reader at our designated parking spot. When we park the bicycle or car at the designated parking spot, the RFID reader will Automatically detect vehicle information, and automatically handle vehicle return matters in the background. At the same time, our background managers can also know vehicle parking information. The application of RFID technology in the car and bicycle rental industry can well complement GPS and reduce the cost of our GPS applications.
As RFID technology is widely used in all walks of life, it continues to provide more convenience in our lives and improves the quality of life.
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