摘要:
An antenna, a read/write unit, an radio frequency identification (RFID) arrangement and a method, wherein the antenna is configured to connect to an external antenna connection of the read/write unit via an antenna line, wherein the antenna includes a data memory having type information and/or having property information, the content of the data memory being readable by the read/write unit, and includes a measuring device for determining a value of the field strength or power of a radio frequency signal fed into the antenna by the read/write unit, and includes a device for informing the read/write unit about the value being reached or exceeded.
摘要:
A read/write device and a method for detecting, selecting and reporting a number of transponders from a multiplicity of contactlessly readable transponders to an application, where the read/write device is configured to detect a plurality of transponders within a radio range using at least one read/write cycle, the read/write device is set up with a filter device to select one of the detected transponders, and the read/write device is configured to report the selected transponder to the application. Each transponder belong to functional group, where the read/write device is configured to determine the respective affiliation of detected transponders with one functional group using the data provided by the transponders during their respective detection, and the filter device is configured to select at least one transponder from each of the groups, and the read/write device is configured to report all selected transponders to the application.
摘要:
A radio frequency identification (RFID) reader antenna includes a feeding frame, a upper stub unit connected with the first side of the feeding frame, and a lower stub unit connected with the second side of the feeding frame, wherein the upper stub unit includes M first stubs extending towards the second side of the feeding frame, the lower stub unit includes N second stubs extending towards the first side of the feeding frame, the M first stubs and the N second stubs are arranged alternately intervallic, where M, N are integers that are greater than one.
摘要:
An RFID reader is provided. The RFID reader includes a transmitter section and a receiver section. The transmitter section is configured to transmit a first RF signal which includes several carrier frequencies that are effective to simultaneously illuminate a tag at the plurality of carrier frequencies. The receiver section is configured to receive a second RF signal which includes several frequencies which each have the same information.
摘要:
An RFID reader/writer including a reader/writer body, antennas and an antenna switching unit is provided. The reader/writer body distributes to each of its own ports a length of sustained time for transmitting a signal. One end of the antenna switching unit is connected to one port of the reader/writer body, while the other end is connected to two antennas. The antenna switching unit acquires a length of sustained time for the signal transmission distributed to the port by the reader/writer body, configures the time-length for the signal transmission and the sequence thereof of the two antennas according to the length of sustained time for the signal transmission, obtains a configuration result for signal transmission, and performs a switching control on the signal transmission of the two antennas according to the signal transmission configuration result. Further, an implementation method for the antenna switching of the RFID reader/writer is described.
摘要:
An RFID reader comprises a receiver section for receiving an RF signal and a transmitter section for transmitting an RF signal. The reader is a multicarrier RFID reader and both the transmitted RF signal and the received RF signal comprise at least two frequencies.
摘要:
A method for coding a sequence of data bits (B1-B5), at least one of said bits having a logical on value or a logical off value. The data bits are organized in a sequence of time slot frames (Fr1-FR5). At least one time slot frame has a plurality of time slots (ZS11-ZS13). Each of the plurality of times slots are capable of having an on value or an off value (Z1 or Z0). The coding comprises preloading a time slot (ZS14, AF) from the plurality of time slots with an off value (Z0). Each of the time slots (ZS11-ZS13) other than the preloaded time slot (ZS14) are loaded with an on value or an off value to form a logical on value or logical off value for the at least one of said data bits. A time slot with an off value from the plurality of time slots always follows another time slot with an on value from the plurality of time slots. The logical on value is complementary to the logical off value.
摘要:
A method for coding a sequence of data bits (B1-B5), at least one of said bits having a logical on value or a logical off value. The data bits are organized in a sequence of time slot frames (Fr1-FR5). At least one time slot frame has a plurality of time slots (ZS11-ZS13). Each of the plurality of times slots are capable of having an on value or an off value (Z1 or Z0). The coding comprises preloading a time slot (ZS14, AF) from the plurality of time slots with an off value (Z0). Each of the time slots (ZS11-ZS13) other than the preloaded time slot (ZS14) are loaded with an on value or an off value to form a logical on value or logical off value for the at least one of said data bits. A time slot with an off value from the plurality of time slots always follows another time slot with an on value from the plurality of time slots. The logical on value is complementary to the logical off value.
摘要:
A method for configuring and operating a read/write unit connected to an industrial control device in a system including multiple transponders having unique identification numbers, the read/write unit. During a recognition phase, a plurality of the transponders are detected, at least two of the transponders are repeatedly detected, and during each detection, the unique identification number of each detected transponder and a number of features relating to each detection of that transponder are registered. During an evaluation phase, the registered features are evaluated statistically for each detected transponder, statistical variables are determined for each detected transponder, and the statistical variables are respectively filtered using filter criteria. The unique identification number of one of the detected transponders that meets the filter criteria is reported to the industrial control device as a detected transponder to provide unambiguous identification of the closest transponder to the read/write unit, even in densely packed surroundings.
摘要:
A method and read/write unit for configuring read/write units in an RFID arrangement, wherein an operating parameter is adjusted for the configuration in at least one of the read/write units, and direct interchange of messages relating to the configuration occurs between read/write units, where respective wireless interfaces configured for communication by the read/write units with RFID transponders and communication methods and protocols provided for communication with RFID transponders are used for the interchange of the messages, at least one of the read/write units simulates an RFID transponder to another of the read/write units such that read/write units in the complex are configurable without communicating via host interfaces and without separate hardware devices or separate data links between the read/write units, and such that read/write units in the complex without a host interface or unconnected to a data network (e.g., standalone units) can also be configured with one another.