Method for an acquisition of data from external digital sensors with an RFID smart tag and a tag integrated circuit for carrying out said method
First Claim
1. A method for an acquisition of data from a natural number of external digital sensors with a Radio-Frequency Identification (RFID) smart tag, the method comprising:
- storing, in a permanent memory of the RFID smart tag,addresses of the external digital sensors,enabling flags for pages of a microprogram, which is required and sufficient for executing communication between the RFID smart tag and the sensors, anda frequency of a clock signal intended for communicating of a digital communication interface with the sensors,wherein the microprogram is stored in a tag memory being accessible by an RFID interrogator, the tag memory comprising at least one of the permanent memory or a buffer, andwherein a hard-wired dedicated processing unit of the RFID smart tag reads, decodes and executes the microprogram through the digital communication interface.
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Abstract
A microprogram for performing communication between an RFID smart tag and external digital sensors (EDS1, EDSK) is loaded in a buffer (Bu). A hard-wired dedicated processing unit (DPU) of the tag reads, decodes and executes said microprogram through the digital communication interface (DCI). The sensor data is stored at beginning locations of said buffer (Bu), wherefrom they are read by an RFID interrogator. The tag functionality in an application is settable with the RFID interrogator to an automatic data logger or RFID wireless sensor. The tag is adjustable to various types of digital sensors from various manufacturers. A hardwired dedicated processing unit makes it possible that the tag saves more energy, has smaller dimensions and is faster.
10 Citations
19 Claims
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1. A method for an acquisition of data from a natural number of external digital sensors with a Radio-Frequency Identification (RFID) smart tag, the method comprising:
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storing, in a permanent memory of the RFID smart tag, addresses of the external digital sensors, enabling flags for pages of a microprogram, which is required and sufficient for executing communication between the RFID smart tag and the sensors, and a frequency of a clock signal intended for communicating of a digital communication interface with the sensors, wherein the microprogram is stored in a tag memory being accessible by an RFID interrogator, the tag memory comprising at least one of the permanent memory or a buffer, and wherein a hard-wired dedicated processing unit of the RFID smart tag reads, decodes and executes the microprogram through the digital communication interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An integrated circuit of a Radio-Frequency Identification (RFID) smart tag for an acquisition of data from a natural number of external digital sensors, the integrated circuit comprising:
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a digital communication interface, to which a natural number of external digital sensors are attached; an RFID interface; a serial interface; a permanent memory; a logic sequential circuit, which is connected to the RFID interface and the serial interface on one hand and to the permanent memory on the other hand; and a timer, wherein the integrated circuit comprises the logic sequential circuit as a hard-wired dedicated processing unit, which is only able to carry out a microprogram, the microprogram being required and sufficient to perform communication between the RFID smart tag and the sensors, wherein the dedicated processing unit is connected to the digital communication interface, wherein the dedicated processing unit is connected to the logic sequential circuit through the permanent memory on one hand and through a buffer of such type that the first stored data is retrieved therefrom first on the other hand, and wherein the dedicated processing unit is connected to the timer. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification