RFID nomen clature RFID Factory

News Industry News

RFID nomen clature

Release time：2024-08-22 Browse time： 68

Advantages of RFID systems: When we consider applications, manufacturing processes, and supply chains as a whole, the full advantages of RFID technology are realized. A unique advantage of RFID over other recognition technologies is its ability to send and receive data in the so-called downstream and upstream processes. Therefore, starting from the raw material stage, RFID identifies the product, completes manufacturing, quality assurance, registration in the warehouse, and the whole process from delivery to the customer to service. This really unleashed the full potential of RFID.
Amplitude: the maximum absolute value of the periodic curve measured along its vertical axis (the height of the wave).
Amplitude modulation: Change the amplitude of the radio waves. The higher waveform is interpreted as 1, while the normal waveform is interpreted as zero. By changing the waveform, RFID tags can pass a string of binary numbers to the reader. A computer can interpret these numbers as digital information. Methods for varying the amplitude are called amplitude shift keying or ASK.
Range-shift keying: Change the amplitude of the wave to convey the data stored on the label.
Collision protection: A common term used to prevent radio waves from one device from disturbing radio waves from another device. The conflict-proof algorithm is also used to read multiple labels in the same reader field.
API: A source code interface provided by a computer system or program library to support service requests for computer programs. Unlike application binary interfaces, the API is specified according to a programming language that can be compiled when building an application, rather than a clear low-level description of how the data is arranged in memory.
Dedicated integrated circuits (ASIC): integrated circuits (IC) customized for specific uses (such as chips designed to run mobile phones rather than for general purposes).
Asset tracking: one of the most common applications for RFID. Placing RFID transponders on or among high-value assets and recyclable shipping containers enables companies to quickly collect data on their location with little human intervention. Marking assets enables the company to improve asset utilization, identify the last known user of the asset, automate maintenance routines and reduce lost items.
Attenuation: To reduce the RF power.
Attenuator: A device connected to a transmission line (coaxial cable) that reduces the power of the RF signal when the signal passes from the reader to the antenna. The attenuators usually work by emitting the RF energy as heat.
Width: a frequency range or band defined within the electromagnetic spectrum capable of receiving or transmitting.
Block check character (BCC): To detect a transfer error, add the parity error check characters to the data.
Capacity frequency band: use the Shannon equation to measure the transmission capacity of the communication channel expressed in bits / s and related to the channel frequency width and signal-to-noise ratio;
Capacity data: data measures expressed in bits or bytes that can be stored in a transponder. The metric can simply involve bits accessible to the user or involve the sum of bits including data identifiers and error control bits.
Carrier: the abbreviation of the carrier frequency.
Carrier frequency: usually in the RFID system, through amplitude shift keyying (ASK), frequency shift
Error correction code (ECC): According to the specific calculation algorithm, supplementary bits are introduced or sources are encoded into the data stream to allow automatic correction of wrong bits and / bits or derivation of missing bits.
Error correction mode: a mode defined for data communication or processing process, where lost or wrong bits are automatically corrected.
Error correction protocol: the rules on which the error correction mode is based.
Error correction: a term representing the scheme or action used to correct errors detected in the data stream.
Error detection: a term for a scheme or action that determines the presence of an error in the data stream.
Error management: Technology used to identify and / or correct errors in a data capture and process the system to ensure the accuracy of data provided to users of the system.
Extended Binary Encoding Data Exchange Code (EBCDIC): An eight-bit binary code set, sometimes referred to as extended ASCII, contains 128 ASCII character sets and other characters and control functions, thus forming a total set of 256 characters.
Frequency: number of cycles performed in unit time. It is usually expressed in Hertz (cycle per second) or in appropriate weighted units such as kilohertz (kHz), MHz (MHz) and gigahertz (GHz).
Frequency hopping: the frequency at which the frequency hopping frequency expansion (FHSS) system moves between the transmission frequencies. It is equal to the reciprocal of the dwell time at the FHSS center frequency.
A single can be detected by checking the parity of the received characters. The same principle applies to the binary data blocks.
Penetration: This term is used to describe the ability of electromagnetic waves to propagate into or through a material. Non-conductive materials are essentially transparent to electromagnetic waves, but the absorption mechanism (especially at higher frequencies) reduces the energy transmitted through the material. Metal is a good reflector for freely propagating electromagnetic waves, and hardly any incident wave can propagate to the metal surface.
Phase modulation (PM): The phase of a fixed frequency sinusoidal carrier represents the data or signal state. In the case of binary form, the modulation involves a 180 degree phase difference between binary states, called phase shift keying (PSK).
Phase shift keying (PSK): binary data states 0 and 1 are represented by the phase of a fixed frequency sine carrier, with a phase difference of 180 degrees indicating the corresponding value.
Polar field diagram: a graphical representation of the electric field or magnetic field strength component of the electromagnetic field, expressed in a polar coordinate system (distance v angle, to 360 degrees). Usually used to illustrate the field characteristics of the antenna.
Polarization: a trajectory or path described by the electric field vector of the electromagnetic wave relative to time.
Power level and flux density: vector product of electric field and magnetic field strength in electromagnetic wave, expressed as level and power flux density in watts, in watt / square meter (W / m²) at a certain distance from the power supply. Low-power RF transmission is usually expressed in milliwatts or microwatts.
Protocol: A set of rules that control specific functions, such as data / information flow in a communication system.
Proximity: This term is usually used to indicate how close a system component is relative to another one, such as the transponder relative to the reader.
Proximity sensor: an electronic device that detects and displays the presence of a selected object. When working with the RFID system