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Improvements in RFID tracking

A sensor tag and sensor technology, applied in the field of RFID tags, can solve problems such as food quality and safety impact, and achieve the effect of prolonging the effective life and reducing the overall power consumption

Inactive Publication Date: 2015-12-23
SENSADATA PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If at any time the ambient temperature falls outside this range, the quality and safety of the food being stored may be compromised

Method used

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  • Improvements in RFID tracking
  • Improvements in RFID tracking
  • Improvements in RFID tracking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0108] figure 1 is a high-level block diagram of a sensor tag 100 according to an embodiment of the present invention.

[0109] The sensor tag 100 includes a control module 102 having a memory 104 . The memory 104 may include: non-volatile storage for operating on programs and data; and volatile storage used as scratch space and / or for temporary variables.

[0110] The sensor tag 100 also includes a battery 106 as a primary power source for the control module 102 and other components of the tag 100 .

[0111] figure 1 The particular embodiment of the RFID sensor tag 100 shown in FIG. 100 also includes a temperature sensor 108 . Within this description, temperature sensor 108 is used as an example of environmental sensing that may be performed by an RFID sensor tag, however it is understood that it is not intended to limit the scope of the invention. For example, other forms of environmental sensors, such as ambient light sensors or humidity sensors, and / or other types of s...

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PUM

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Abstract

A low-power RFID sensor tag (100) comprises a processor (102), a power source (106), an RF transceiver (112, 114, 116), one or more sensors (108) accessible to the processor via a sensor interface, and at least one memory device (104). In one aspect, the tag (100) is configured to operate in three power-consumption states: a low power-consumption state; a medium power-consumption state in which sensor measurements are performed; and a high power-consumption state used when engaged in RF communications. In another aspect, power consumption and memory usage are reduced by configuring the tag (100) to record sensor data only upon satisfaction of a predetermined condition. In a further aspect, the tag (100) is configured to respond to an RF interrogation signal only when the signal comprises an instruction in accordance with a predetermined communications protocol. In another aspect, the tag is configured, upon interrogation, to confirm whether new recorded sensor data is available as a preliminary step, to minimise transmission in the event that no new data is available.

Description

technical field [0001] The present invention relates to the use of RFID tags for tracking and sensing of items and equipment, and in particular to improvements to RFID sensor tags configured to detect, record and relay environmental information, etc. Embodiments of the present invention may find application in a variety of fields, including security, food safety, surveillance, logistics, transportation, agriculture, inventory management, asset tracking, and the like. Background technique [0002] Radio Frequency Identification (RFID) is a widely deployed technology with a range of applications in logistics, transportation, inventory management, asset tracking, and more. [0003] Existing RFID deployments typically operate in the very high frequency (VHF) band between 30 MHz and 300 MHz; and / or in the ultra high frequency (UHF) band between 300 MHz and 3 GHz. A common working frequency is, for example, in the 2.4GHz unlicensed band. [0004] Most RFID deployments are used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K17/00
CPCG06K19/0705G06K19/0709G06K19/0716G06K19/0723G06K19/0715G06K19/0717G06K7/10207
Inventor 阿尼鲁达·阿尼尔·德塞克里耶巴伊·维诺德巴伊·沙赫大卫·菲特里奥穆图塔思里贾·拉西特·伊朗加·费尔南多尤格达特·辛格
Owner SENSADATA PTY LTD