Finding sensor data in an RFID network
First Claim
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1. A method comprising:
- receiving, from an interrogator, a query of data from a sensor that records data about a physical parameter, wherein the data is acquired by an RFID tag, a determination is made as to what category the sensed physical parameter that the sensor recorded is, a flag for the determined category of the data acquired is created, and the data is stored in the RFID tag along with a flag indicating what category the physical parameter that the sensor is recording is, wherein the flag is different for different categories of physical parameters;
searching the RFID tag for the indicator that identifies the category; and
reading the sensor data identified by the indicator from the RFID tag.
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Abstract
A system and method of selectively reading sensor data from a memory device is able to search the memory device for an indicator that identifies the sensor data, and read only the sensor data identified by the indicator from the memory device. In this way, interrogating devices are able to sort through sensor data stored in a network of memory devices, such as an RFID network, and report specific data of interest despite the existence of a variety of data types in the network. In some embodiments, flags are stored and associated with specific types of data, such as various sensor data, thereby allowing numerous memory devices and sensors to operate and be read efficiently in the same environment.
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Citations
22 Claims
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1. A method comprising:
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receiving, from an interrogator, a query of data from a sensor that records data about a physical parameter, wherein the data is acquired by an RFID tag, a determination is made as to what category the sensed physical parameter that the sensor recorded is, a flag for the determined category of the data acquired is created, and the data is stored in the RFID tag along with a flag indicating what category the physical parameter that the sensor is recording is, wherein the flag is different for different categories of physical parameters; searching the RFID tag for the indicator that identifies the category; and reading the sensor data identified by the indicator from the RFID tag. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 21, 22)
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10. A method comprising:
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acquiring, by an RFID tag, data from a sensor by recording signals about a sensed physical parameter; determining what category the sensed physical parameter that the sensor recorded is; creating a flag for the determined category of the data acquired, wherein the flag is different for different categories of physical parameters; and storing the data in the RFID tag with the flag indicating the category of the sensed physical parameter to allow selective reading of the data from the RFID tag by the category. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method comprising:
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reading an out-of-channel identifier stored in an out-of-channel portion of a memory device separate and distinguishable from the data stored in the memory device that includes sensor data, the out-of-channel identifier comprising a command executable by a reader to search the memory device for an indicator that identifies a directory of data types, to search the directory of data types for a particular data category that corresponds to the sensor data, and to read the sensor data indicated in the directory of data types from the memory device, wherein the directory lists the types of data that are stored in the memory device; and controlling the reader to execute the command, thereby reading the sensor data indicated in the directory of data types from the memory device. - View Dependent Claims (20)
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Specification