WO2008065337A1 - Power saving apparatus for an rfid-tag transponder - Google Patents

Power saving apparatus for an rfid-tag transponder Download PDF

Info

Publication number
WO2008065337A1
WO2008065337A1 PCT/GB2007/004326 GB2007004326W WO2008065337A1 WO 2008065337 A1 WO2008065337 A1 WO 2008065337A1 GB 2007004326 W GB2007004326 W GB 2007004326W WO 2008065337 A1 WO2008065337 A1 WO 2008065337A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio frequency
tag transponder
frequency identification
control means
electronic control
Prior art date
Application number
PCT/GB2007/004326
Other languages
French (fr)
Inventor
Andrew Lee Mepham
Paul Delooze
Original Assignee
Rftraq Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rftraq Limited filed Critical Rftraq Limited
Publication of WO2008065337A1 publication Critical patent/WO2008065337A1/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
    • G06K19/0702—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including a battery
    • G06K19/0705—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including a battery the battery being connected to a power saving arrangement
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • H04B5/79—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This invention relates to power saving apparatus and, more especially, this invention relates to power saving apparatus for at least one tag transponder in active radio frequency tag transponder apparatus.
  • Short range wireless systems operate in the unlicenced portion of the radio spectrum.
  • the short range wireless systems usually operate at 433MHz, 868MHz, 915MHz or 2.4GHz industrial, scientific and medical band.
  • Short range wireless systems can be combined with systems wired to the Internet in order to provide communication over longer distances via an access point.
  • Radio frequency identification apparatus is one area of automatic identification systems.
  • the radio frequency identification apparatus finds use in short range wireless communications systems specified as Low Rate Wireless Personal Area Network (LR-WPAN) from the IEEE 802.15.4 standard 2003.
  • Typical radio frequency identification apparatus includes a radio frequency identification reader, and a radio frequency identification tag transponder linked together by a radio frequency which is generated by the reader.
  • the tag transponder may be attached or coupled to an item for identification purposes.
  • the item may be a manufactured product or any other suitable and desired item.
  • the transmission of data over a radio frequency medium occurs by use of a transceiver modulating the radio frequency medium. This has some fixed parameters depending upon the operation of the transceiver.
  • the data is transmitted within the radio frequency identification apparatus, and there is two-way communication between the tag transponder and the reader.
  • the transponder In active radio frequency identification apparatus, the transponder is powered by a battery. The battery is usually limited in its size. Operation of the tag transponder and/or transmission or reception of data requires power from the battery. The consumption of the power is often inefficient, and thus the operating life of the active tag transponder is not maximised.
  • power saving apparatus for at least one tag transponder in active radio frequency identification apparatus, which power saving apparatus comprises:
  • transceiver which is able to transmit and receive data from a Low Rate Wireless Personal Area Network
  • first electronic control means for detecting the presence of the tag transponder within an operating area of the active radio frequency identification apparatus
  • the power saving apparatus of the present invention enables efficient consumption of power from the battery, and thereby enables the operating life of the tag transponder to be maximised.
  • the power saving apparatus is able to operate such that the first electronic control means detects the presence of the tag transponder within the radio frequency identification apparatus, the second electronic control means operates to vary the rate of transmission of the tag transponder in the active radio frequency identification apparatus, and the third electronic control means sets the tag transponder into the state of minimum electrical power consumption from the battery.
  • Each tag transponder contains data by which the tag transponder is individually identified. This data is transmitted by radio frequency medium means within the active radio frequency identification apparatus to the reader. The reader is able to access the radio frequency medium and receive the data from the tag transponder. The power is used when the tag transponder is operating.
  • the power saving apparatus may be one in which the second electronic control means operates to cause the time between transmissions to be fixed when the transceiver is in communication with the active radio frequency identification apparatus.
  • the power saving apparatus may be one in which the third electronic control means operates to cause the time that the tag transponder consumes the minimum amount of electrical power from the battery to be a fixed period of time, when the tag transponder is not present in communication with the active radio frequency identification network.
  • the power saving apparatus may be manufactured and sold with or without the battery. If the power saving apparatus of the present invention is manufactured and sold without the battery, then the battery can be inserted by a user of the active radio frequency identification apparatus.
  • an active radio frequency identification tag transponder 101 which contains a transceiver 110.
  • the tag transponder 101 is capable of detecting the presence of active radio frequency identification apparatus 116. This detection is achieved by the reception of some data from the active radio frequency identification apparatus 116, and the subsequent passing of the received data to combined electronic control means 112.
  • the combined electronic control means 112 changes the operation of the tag transponder 101.
  • the active radio frequency tag transponder 101 also comprises a battery 114.
  • the first electronic control means 120 decides when the tag transponder 101 is present in the active radio frequency identification apparatus 116. If the first electronic control means 120 decides that the tag transponder 101 is not in communication with the active radio frequency identification apparatus 116, then the third electronic control means 124 changes the operation of the tag transponder 101 to a state of minimum power consumption from the battery 114. This occurs for a period of time. This period of time of minimum power consumption can be fixed or variable, depending upon how the tag transponder 101 is desired to operate within the radio frequency identification apparatus 116.
  • the second electronic control means 122 waits for a period of time before transmitting to the active radio frequency identification apparatus. This period of time, which may be fixed or variable, is also a period of time in the minimum power consumption on the battery 114 is in effect.
  • the tag transponder 101 When the tag transponder 101 is judged to be present in the active radio frequency identification apparatus 116 then, the tag transponder 101 receives data through the transceiver 110.
  • the transceiver 110 allows the second electronic control means 122 to vary the time between transmissions, and the time period that the tag transponder 101 spends in the low power consumption time period consuming power from the battery 114.
  • the tag transponder 101 When the tag transponder 101 is judged not to be present in the active radio frequency identification apparatus 118, then the tag transponder 101 enters a low power consumption state.
  • the time period for this low power consumption state is set by data previously received from the active radio frequency identification apparatus, through the transceiver 110 or internal data to the tag transponder 101.
  • the third electronic control means 122 controls the entry of the tag transponder 101 into the low power consumption state, and its exit from this state.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

Power saving apparatus for at least one tag transponder (101) in active radio frequency identification apparatus, which power saving apparatus comprises: (i) at least one tag transponder which is powered by a battery (114); (ii) a transceiver (110) which is able to transmit and receive data from a Low Rate Wireless Personal Area Network; (iii) first electronic control means for detecting the presence of the tag transponder within an operating area of the active radio frequency identification apparatus (116, 118 - in communication or not in communication); (iv) second electronic control means for varying the rate of transmission of the tag transponder (101) within the operating area of the active radio frequency identification apparatus (116, 118 - in communication or not in communication); and (v) third electronic control means for setting the tag transponder into a state of minimum electrical power consumption from the battery for a period of time.

Description

POWER SAVING APPARATUS FOR AN RFID-TAG TRANSPONDER
This invention relates to power saving apparatus and, more especially, this invention relates to power saving apparatus for at least one tag transponder in active radio frequency tag transponder apparatus.
Short range wireless systems operate in the unlicenced portion of the radio spectrum. The short range wireless systems usually operate at 433MHz, 868MHz, 915MHz or 2.4GHz industrial, scientific and medical band. Short range wireless systems can be combined with systems wired to the Internet in order to provide communication over longer distances via an access point.
Short range wireless communications systems find use in automatic identification systems. Radio frequency identification apparatus is one area of automatic identification systems. The radio frequency identification apparatus finds use in short range wireless communications systems specified as Low Rate Wireless Personal Area Network (LR-WPAN) from the IEEE 802.15.4 standard 2003. Typical radio frequency identification apparatus includes a radio frequency identification reader, and a radio frequency identification tag transponder linked together by a radio frequency which is generated by the reader. The tag transponder may be attached or coupled to an item for identification purposes. The item may be a manufactured product or any other suitable and desired item.
The transmission of data over a radio frequency medium occurs by use of a transceiver modulating the radio frequency medium. This has some fixed parameters depending upon the operation of the transceiver. The data is transmitted within the radio frequency identification apparatus, and there is two-way communication between the tag transponder and the reader. In active radio frequency identification apparatus, the transponder is powered by a battery. The battery is usually limited in its size. Operation of the tag transponder and/or transmission or reception of data requires power from the battery. The consumption of the power is often inefficient, and thus the operating life of the active tag transponder is not maximised.
It is an aim of the present invention to obviate or reduce the above mentioned problem.
Accordingly, in one non-limiting embodiment of the present invention there is provided power saving apparatus for at least one tag transponder in active radio frequency identification apparatus, which power saving apparatus comprises:
(i) at least one tag transponder which is powered by a battery;
(ii) a transceiver which is able to transmit and receive data from a Low Rate Wireless Personal Area Network; (iii) first electronic control means for detecting the presence of the tag transponder within an operating area of the active radio frequency identification apparatus;
(iv) second electronic control means for varying the rate of transmission of the tag transponder within the operating area of the active radio frequency identification apparatus; and
(v) third electronic control means for setting the tag transponder into a state of minimum electrical power consumption from the battery for a period of time.
The power saving apparatus of the present invention enables efficient consumption of power from the battery, and thereby enables the operating life of the tag transponder to be maximised. The power saving apparatus is able to operate such that the first electronic control means detects the presence of the tag transponder within the radio frequency identification apparatus, the second electronic control means operates to vary the rate of transmission of the tag transponder in the active radio frequency identification apparatus, and the third electronic control means sets the tag transponder into the state of minimum electrical power consumption from the battery.
During operation of the active radio frequency identification apparatus, one or more of the tag transponders are employed. Each tag transponder contains data by which the tag transponder is individually identified. This data is transmitted by radio frequency medium means within the active radio frequency identification apparatus to the reader. The reader is able to access the radio frequency medium and receive the data from the tag transponder. The power is used when the tag transponder is operating.
The power saving apparatus may be one in which the second electronic control means operates to cause the time between transmissions to be fixed when the transceiver is in communication with the active radio frequency identification apparatus.
The power saving apparatus may be one in which the third electronic control means operates to cause the time that the tag transponder consumes the minimum amount of electrical power from the battery to be a fixed period of time, when the tag transponder is not present in communication with the active radio frequency identification network.
The power saving apparatus may be manufactured and sold with or without the battery. If the power saving apparatus of the present invention is manufactured and sold without the battery, then the battery can be inserted by a user of the active radio frequency identification apparatus.
An embodiment of the invention will now be described solely by way of example and with reference to the accompanying drawing which shows an active tag transponder and reader either inside radio frequency identification apparatus, or external to the radio frequency identification apparatus.
Referring to the drawing, there is shown an active radio frequency identification tag transponder 101 which contains a transceiver 110. The tag transponder 101 is capable of detecting the presence of active radio frequency identification apparatus 116. This detection is achieved by the reception of some data from the active radio frequency identification apparatus 116, and the subsequent passing of the received data to combined electronic control means 112. The combined electronic control means 112 changes the operation of the tag transponder 101. The active radio frequency tag transponder 101 also comprises a battery 114.
The first electronic control means 120 decides when the tag transponder 101 is present in the active radio frequency identification apparatus 116. If the first electronic control means 120 decides that the tag transponder 101 is not in communication with the active radio frequency identification apparatus 116, then the third electronic control means 124 changes the operation of the tag transponder 101 to a state of minimum power consumption from the battery 114. This occurs for a period of time. This period of time of minimum power consumption can be fixed or variable, depending upon how the tag transponder 101 is desired to operate within the radio frequency identification apparatus 116.
When the first electronic control means 120 decides that the tag transponder 101 is in communication with the active radio frequency identification apparatus 116, then the second electronic control means 122 waits for a period of time before transmitting to the active radio frequency identification apparatus. This period of time, which may be fixed or variable, is also a period of time in the minimum power consumption on the battery 114 is in effect.
When the tag transponder 101 is judged to be present in the active radio frequency identification apparatus 116 then, the tag transponder 101 receives data through the transceiver 110. The transceiver 110 allows the second electronic control means 122 to vary the time between transmissions, and the time period that the tag transponder 101 spends in the low power consumption time period consuming power from the battery 114.
When the tag transponder 101 is judged not to be present in the active radio frequency identification apparatus 118, then the tag transponder 101 enters a low power consumption state. The time period for this low power consumption state is set by data previously received from the active radio frequency identification apparatus, through the transceiver 110 or internal data to the tag transponder 101. The third electronic control means 122 controls the entry of the tag transponder 101 into the low power consumption state, and its exit from this state.
It is to be appreciated that the embodiment of the invention described above with reference to the accompanying drawing has been given by way of example and that modifications may be effected.

Claims

1. Power saving apparatus for at least one tag transponder in active radio frequency identification apparatus, which power saving apparatus comprises:
(i) at least one tag transponder which is powered by a battery;
(ii) a transceiver which is able to transmit and receive data from a Low Rate Wireless Personal Area Network;
(iii) first electronic control means for detecting the presence of the tag transponder within an operating area of the active radio frequency identification apparatus;
(iv) second electronic control means for varying the rate of transmission of the tag transponder within the operating area of the active radio frequency identification apparatus; and
(v) third electronic control means for setting the tag transponder into a state of minimum electrical power consumption from the battery for a period of time.
2. Power saving apparatus according to claim 1 in which the second electronic control means causes the time between transmissions to be fixed when the transceiver is in communication with the active radio frequency identification apparatus.
3. Power saving apparatus according to claim 1 or claim 2 in which the third electronic control means operates to cause the time that the tag transponder consumes the minimum electrical power from the battery to be a fixed period of time when the tag transponder is determined as not being in communication with the active radio frequency network.
4. Power saving apparatus according to any one of the preceding claims and including the battery.
PCT/GB2007/004326 2006-11-28 2007-11-12 Power saving apparatus for an rfid-tag transponder WO2008065337A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0623771.3A GB0623771D0 (en) 2006-11-28 2006-11-28 Power saving apparatus for at least one tag transponder in active radio frequency identification apparatus
GB0623771.3 2006-11-28

Publications (1)

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WO2008065337A1 true WO2008065337A1 (en) 2008-06-05

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WO (1) WO2008065337A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011138008A1 (en) * 2010-05-04 2011-11-10 Giesecke & Devrient Gmbh Network node for a wireless sensor network
CN111291842A (en) * 2020-01-16 2020-06-16 珠海格力电器股份有限公司 Cooking bench, pot and pot stove linkage system and pot stove linkage method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5448242A (en) * 1994-04-26 1995-09-05 Texas Instruments Incorporated Modulation field detection, method and structure
US20030107475A1 (en) * 2001-12-12 2003-06-12 Bautista Edwin Espanola Receiver for and method of extending battery life
WO2006003648A2 (en) * 2004-07-01 2006-01-12 Powerid Ltd. Battery-assisted backscatter rfid transponder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5448242A (en) * 1994-04-26 1995-09-05 Texas Instruments Incorporated Modulation field detection, method and structure
US20030107475A1 (en) * 2001-12-12 2003-06-12 Bautista Edwin Espanola Receiver for and method of extending battery life
WO2006003648A2 (en) * 2004-07-01 2006-01-12 Powerid Ltd. Battery-assisted backscatter rfid transponder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011138008A1 (en) * 2010-05-04 2011-11-10 Giesecke & Devrient Gmbh Network node for a wireless sensor network
US9204485B2 (en) 2010-05-04 2015-12-01 Giesecke & Devrient Gmbh Network node for a wireless sensor network
CN111291842A (en) * 2020-01-16 2020-06-16 珠海格力电器股份有限公司 Cooking bench, pot and pot stove linkage system and pot stove linkage method
CN111291842B (en) * 2020-01-16 2021-03-12 珠海格力电器股份有限公司 Cooking bench, pot and pot stove linkage system and pot stove linkage method

Also Published As

Publication number Publication date
GB0623771D0 (en) 2007-01-10

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