WO2012171297A1 - Procédé de réveil de correspondance de signal, appareil et étiquette - Google Patents

Procédé de réveil de correspondance de signal, appareil et étiquette Download PDF

Info

Publication number
WO2012171297A1
WO2012171297A1 PCT/CN2011/082159 CN2011082159W WO2012171297A1 WO 2012171297 A1 WO2012171297 A1 WO 2012171297A1 CN 2011082159 W CN2011082159 W CN 2011082159W WO 2012171297 A1 WO2012171297 A1 WO 2012171297A1
Authority
WO
WIPO (PCT)
Prior art keywords
wake
signal
square wave
matching
determining
Prior art date
Application number
PCT/CN2011/082159
Other languages
English (en)
Chinese (zh)
Inventor
李龙
贾桂丽
侯晓凡
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012171297A1 publication Critical patent/WO2012171297A1/fr

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

Definitions

  • the present invention relates to the field of radio frequency identification technologies, and in particular, to a wake-up signal matching method, apparatus, and tag. Background technique
  • Radio Frequency Identification is a non-contact automatic identification technology that automatically recognizes target objects and acquires relevant data through radio frequency signals.
  • the identification work can work in various harsh environments without manual intervention.
  • RFID technology recognizes high-speed moving objects and recognizes multiple labels at the same time, making operation quick and easy.
  • Radio frequency identification systems mainly include tags and readers.
  • RFID includes passive radio frequency identification and active radio frequency identification, the essential difference between the two is at the tag end.
  • the tags are specifically divided into active electronic tags, semi-active electronic tags, and passive electronic tags.
  • the active electronic tag also known as the active tag, is powered entirely by the internal battery, and the energy supply of the tag battery is also partially converted into the RF energy required for the tag to communicate with the reader.
  • the battery power supply in the semi-passive electronic tag only supports the circuit that requires power supply to maintain the data or the auxiliary voltage required for the operation of the tag chip, and the tag circuit that consumes little power itself.
  • the tag is always in a dormant state before it enters the working state, which is equivalent to a passive tag.
  • the internal battery energy consumption of the tag is less than 4, so the battery can last for several years, even up to 10 years; when the tag enters the reading area of the reader When excited by the RF signal from the reader, when entering the working state, the energy exchanged between the tag and the reader supports the RF energy supplied by the reader (reflective modulation mode), and the internal battery function of the tag mainly remedies the tag.
  • the RF field strength at the location is insufficient, and the energy of the battery inside the tag is not converted to RF energy.
  • Passive electronic tags also known as passive tags, do not have a built-in battery. When the reader is outside the reading range of the reader, the electronic tag is in a passive state. When the reader is within the read range of the reader, the electronic tag emits RF from the reader. The energy is extracted from the power required for its work. Passive electronic tags are generally used in reverse The modulation mode completes the transmission of the electronic tag information to the reader.
  • the active electronic tag itself is powered by a battery, has a long read/write distance, a large volume, and a high cost.
  • the disadvantage is that the battery cannot be used for a long time, and the battery needs to be replaced after the energy is exhausted.
  • Active tags are normally in a low-power standby state.
  • the internal battery energy of the tag is very low. Only a very short period of time is required to consume a limited amount of power. Therefore, the battery life can be very long.
  • the existing active tags can be classified into the following two types according to the wake-up mode: one is to match the wake-up signal through a hardware circuit or a chip; one is implemented by software.
  • the wake-up signals are matched by hardware circuits or chips, but the cost is high, and it is not easy to promote; and the wake-up signals are not basically matched by software.
  • other electromagnetic interferences cause the active tags to be awakened by mistakes, such as other electromagnetic interferences, mainly mobile phone signals in space, etc., and it is easy to wake up by mistake, even to wake up as long as there is a signal, then, active The tag is considered to require work, but is actually an invalid interference signal, which causes the tag to consume power and also greatly affects the battery life.
  • the technical problem to be solved by the present invention is to provide a wake-up signal matching method, device and tag, which can solve the defect that the active tag is erroneously awakened, and reduce the power consumption of the active tag.
  • the present invention provides a wake-up signal matching method, which is applied to a radio frequency identification system, and the method includes:
  • the reader sends a wake-up signal to the tag, and the wake-up signal is composed of a plurality of square waves of a fixed frequency; the tag determines whether a wake-up signal is received by matching a square wave, and if it is determined that the wake-up signal is received, the sleep state is Switch to working status.
  • the step of determining, by the method of matching a square wave, whether the wake-up signal is received includes:
  • the tag determines whether the number of consecutively matched square waves reaches a predetermined number of matched square waves, and if so, determines that a wake-up signal is received.
  • the step of determining, by the tag, whether the number of consecutively matched square waves reaches a predetermined number of the matched square waves comprises: Determining whether the number of consecutive square wave hopping interrupts reaches a predetermined number of hops, and if so, determining that the number of consecutively matched square waves reaches a predetermined number of matched square waves;
  • the number of the hops is the number of the matched square waves plus two.
  • the method further includes:
  • the start timer is interrupted on the rising or falling edge of the second square wave, and the timing of the timer is determined when the rising edge or the falling edge of the Nth square wave is interrupted, and whether the timing is determined according to the timing Satisfying the frequency range of the square wave, if yes, determining that the Nth square wave is matched; if not, determining that the Nth square wave is not matched; wherein N is greater than or equal to 3.
  • the label includes a wake-up signal matching unit
  • the wake-up signal matching unit is configured to: determine whether a wake-up signal is received by matching a square wave, and switch from a sleep state to an active state if it is determined that the wake-up signal is received.
  • the wake-up signal matching unit is configured to determine whether a wake-up signal is received by matching a square wave in the following manner:
  • the wake-up signal matching unit is further configured to: start a timer on a rising or falling edge of the second square wave, and determine the timer when the rising edge or falling edge of the Nth square wave is interrupted. The timing time, and determining whether the frequency range of the square wave is satisfied according to the timing time, if yes, determining that the Nth square wave is matched; if not, determining that the Nth square wave is not matched; , N is greater than or equal to 3.
  • the present invention also provides a wake-up signal matching apparatus for use in a radio frequency identification system, the apparatus comprising a reader and a tag, the reader comprising a wake-up signal transmitting unit, the tag comprising a wake-up signal matching unit, wherein:
  • the wake-up signal sending unit is configured to: send a wake-up signal to the tag, where the wake-up signal is composed of multiple square waves of a fixed frequency;
  • the wake-up signal matching unit is configured to: determine whether a wake-up signal is received by matching a square wave, and switch from a sleep state to an active state if it is determined that the wake-up signal is received.
  • the wake-up signal sending unit is configured to send to the label by using an air interface command.
  • the wake-up signal matching unit is configured to determine whether the wake-up signal is received according to the following matching square wave: determining whether the number of consecutively matched square waves reaches a predetermined number of matching square waves, and if so, determining that the wake-up is received signal.
  • the wake-up signal matching unit is further configured to: start a timer on a rising or falling edge of the second square wave, and determine the timer when the rising edge or falling edge of the Nth square wave is interrupted. The timing time, and determining whether the frequency range of the square wave is satisfied according to the timing time, if yes, determining that the Nth square wave is matched; if not, determining that the Nth square wave is not matched; , N is greater than or equal to 3.
  • radio frequency identification system solves the method of false wake-up of the active tag, reduces the cost of the active tag, solves the defect that the active tag is erroneously awakened, reduces the power consumption of the active tag, and reduces the volume of the active tag, which can satisfy A variety of application scenarios.
  • FIG. 1 is a schematic diagram of a matching wake-up signal according to an embodiment of the present invention.
  • FIG. 2 is a flow chart of a method for matching a wake-up signal according to an embodiment of the present invention. Preferred embodiment of the invention
  • the embodiment of the present invention provides a wake-up signal matching method, including: when the reader and the tag communicate, send an air interface command to the tag, and the tag responds to the command of the reader to implement the reader. Communication with the tag; the command sent by the reader is with a wake-up signal, that is, the notification tag is switched from the sleep state to the working state.
  • the wake-up signal is generally composed of several square waves of a fixed frequency.
  • the present invention specifically draws four consecutive methods of matching square waves. Since it is a square wave, there is no difference in phase. As long as 6 jumps are interrupted continuously, it can be considered that 4 parties have been completed. Wave matching.
  • the number of matching square waves ⁇ can be appropriately increased or decreased according to the actual effect.
  • the matching algorithm of the present invention is mainly divided into the following steps:
  • the first falling edge interrupts do some basic settings, including timer configuration, active electronic tag status settings, and so on.
  • the second falling edge interrupts the timer to start counting.
  • the timing can be implemented by a hardware timer inside the processor.
  • the configuration register of the software setting timer can start the timer to start counting, and determine the timing time by reading the count value of the timer when needed, that is, The length of time passed.
  • the third falling edge interrupt determines whether a square wave period is satisfied (that is, whether it is matched with the frequency of the wake-up signal), if it is satisfied, the subsequent matching is continued, and if not, the second step is restarted. Match, until timeout, exit.
  • the fourth falling edge determines whether two square wave periods are satisfied. If it is satisfied, the subsequent matching is continued, and if not, the user exits and sleeps.
  • the fifth falling edge determines whether three square wave periods are satisfied. If yes, the subsequent matching is continued, and if not, the user exits and sleeps.
  • the sixth falling edge determines whether four square wave periods are satisfied. If the matching is successful, the physical layer is received, and if not, the sleep is exited.
  • the interrupt can internally set the corresponding flag to determine the processing flow of the loop, that is: the interrupt internally sets the flag bit if the matching wake-up signal succeeds.
  • the flag is internally judged by the interrupt outer loop. If the judgment flag is set, the matching process is exited and the subsequent data receiving process is performed.
  • the falling edge of the square wave will generate a wake-up interrupt.
  • the timer is set in one interrupt.
  • the count clock frequency set by the timer cannot be too fast, and should match the frequency of the wake-up signal. Generally, it can be set to 0.5-1.5MHz; the second interrupt starts the timer to start counting, the third interrupt reads the count value in the timer, and the time is counted according to the counted count, and then it is judged whether a square wave is satisfied.
  • Frequency range (Because the counting clock is fixed, it is possible to calculate the elapsed time according to the counting value, that is, the period, the reciprocal of the period is the frequency, and determine whether the calculated frequency satisfies the frequency range of one square wave, and further It is judged whether it is roughly consistent with the frequency of the wake-up signal. If it is satisfied, the matching continues, otherwise it is re-matched. After the above process is repeated, after the four square waves are successfully matched, the wake-up signal is successfully matched, and the radio receiving is turned on for data reception. If there is no matching within a certain period of time, the timeout is exited and the sleep continues.
  • state 3 it is judged whether the two wake-up square wave frequency requirements are met. If it is satisfied, the counting is restarted, and the state is set to 4, otherwise the state is reset to 0 and sleep.
  • state 4 it is judged whether the three wake-up square wave frequency requirements are met. If it is satisfied, the counting is restarted, and the state is set to 5, otherwise the state is reset to 0 and sleep.
  • state 5 it is judged whether the four wake-up square wave frequency requirements are met. If it is satisfied, the wake-up signal flag is successfully matched, otherwise the state is reset to 0 and sleep.
  • the method of the present invention increases the matching process of the wake-up signal, which not only completes the matching of the wake-up signal, but also plays a good synchronous role for subsequent data reception.
  • the version coverage area in which the wake-up signal matching is increased is reduced. This is because the energy of the spatial signal will be lost during the propagation process, the signal energy at the edge of the coverage area is the weakest, and the signal received by the tag is also less effective. If the wake-up signal is matched, it is equivalent to the signal effect, so the coverage area of the matching wake-up signal will be reduced under the same conditions. But This change is not very large and can fully meet the requirements of practical applications.
  • the embodiment of the present invention further provides a label, where the label includes a wake-up signal matching unit.
  • the wake-up signal matching unit is configured to determine whether the wake-up signal is received by matching a square wave, and to switch from the sleep state to the active state if it is determined that the wake-up signal is received.
  • the wake-up signal matching unit determines whether the wake-up signal is received by matching a square wave, including:
  • the wake-up signal matching unit is further configured to: when the rising or falling edge of the second square wave is interrupted, the timer is started, and the timer is determined when the rising edge or the falling edge of the Nth square wave is interrupted. a timing time, and determining, according to the timing time, whether the frequency range of the square wave is satisfied, and if so, determining that the Nth square wave is matched; otherwise, determining that the Nth square wave is not matched; wherein, N is greater than Equal to 3.
  • the embodiment of the present invention further provides a wake-up signal matching device, which is applied to a radio frequency identification system, the device includes a reader and a tag, the reader further includes a wake-up signal sending unit, and the tag further includes a wake-up signal matching unit, where:
  • the wake-up signal sending unit is configured to send a wake-up signal to the tag, where the wake-up signal is composed of a plurality of square waves of a fixed frequency;
  • the wake-up signal matching unit is configured to determine whether the wake-up signal is received by matching a square wave, and to switch from the sleep state to the active state if it is determined that the wake-up signal is received.
  • the wake-up signal sending unit is configured to send the wake-up signal to the label by using an air interface command
  • the wake-up signal matching unit is configured to determine whether the wake-up signal is received according to the following method of matching a square wave: determining whether the number of consecutively matched square waves reaches a predetermined number of matching square waves, and if so, determining that the wake-up is received signal.
  • the wake-up signal matching unit is further configured to be on a rising or falling edge of the second square wave
  • the timer is started along the interrupt start timer, and the timing of the timer is determined when the rising edge or the falling edge of the Nth square wave is interrupted, and the frequency range of the square wave is determined according to the timing time. If yes, the determination is performed. Matching to the Nth square wave; if not, determining that the Nth square wave is not matched; wherein N is greater than or equal to 3.
  • the present invention can be applied to different application scenarios.
  • the following uses the national standard electronic non-stop charging application as an example to introduce the application of the present invention in these scenarios.
  • the wake-up signal is 15-17 14KHz square waves. After the active tag wakes up, only the wake-up link and the CPU are working. Since the 14K rate is very low, the CPU clock frequency can be reduced as much as possible to save power when just waking up.
  • the matching range is set to 11K-16.7K, and the matching number is 4 14K square waves.
  • the matching number is 4 14K square waves.
  • the tag will normally receive 7 square waves, and The received waveforms of other antennas are about 5 or so.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any particular combination of hardware and software.
  • radio frequency identification system solves the problem of false wake-up of active tags, reduces the cost of active tags, solves the defect that the active tags are falsely awakened, reduces the power consumption of the active tags, and reduces the active tag volume. , can meet a variety of application scenarios.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé pour réveiller une correspondance de signal, un appareil et une étiquette, appliqués à un système d'identification radiofréquence. Le procédé comprend : l'envoi, par un lecteur, d'un signal de réveil à une étiquette, le signal de réveil étant constitué de multiples ondes carrées à une fréquence fixe ; la détermination, par l'étiquette, si le signal de réveil est reçu d'une manière où il correspond à des ondes carrées, et s'il est déterminé que le signal de réveil est reçu, la commutation d'un état dormant à un état de travail. L'invention concerne un procédé pour résoudre le problème de réveil par erreur d'une étiquette active dans un système d'identification radiofréquence. Ce procédé réduit le coût de l'étiquette active, élimine le défaut de réveil par erreur de l'étiquette active, réduit la consommation d'énergie de l'étiquette active, réduit le volume de l'étiquette active, et permet de satisfaire divers scénarios d'application.
PCT/CN2011/082159 2011-06-16 2011-11-14 Procédé de réveil de correspondance de signal, appareil et étiquette WO2012171297A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110161922.7A CN102831364B (zh) 2011-06-16 2011-06-16 一种唤醒信号匹配方法、装置及标签
CN201110161922.7 2011-06-16

Publications (1)

Publication Number Publication Date
WO2012171297A1 true WO2012171297A1 (fr) 2012-12-20

Family

ID=47334497

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/082159 WO2012171297A1 (fr) 2011-06-16 2011-11-14 Procédé de réveil de correspondance de signal, appareil et étiquette

Country Status (2)

Country Link
CN (1) CN102831364B (fr)
WO (1) WO2012171297A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104680100A (zh) * 2013-12-03 2015-06-03 北京中电华大电子设计有限责任公司 一种有源rfid低功耗周期唤醒方法
CN105512696B (zh) * 2014-09-25 2018-09-14 北京浪奇捷联科技开发有限公司 区域识别统计方法、有源电子标签及区域识别统计系统
CN107862231B (zh) * 2017-11-23 2021-02-19 重庆华虹电子有限公司 一种防止电子标签误唤醒系统
CN110309093B (zh) * 2019-06-17 2021-06-22 深圳和而泰小家电智能科技有限公司 一种数据传输电路以及方法
CN110264649B (zh) * 2019-06-26 2022-10-14 佛山市顺德区海得曼电器有限公司 无线门铃的省电方法
CN113406945B (zh) * 2021-05-26 2022-11-18 东风电驱动系统有限公司 一种宽域频率唤醒信号处理方法及装置
CN113660714B (zh) * 2021-07-30 2024-04-26 烟台东方威思顿电气有限公司 基于特定特征码的低功耗唤醒方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101122945A (zh) * 2006-08-11 2008-02-13 香港中文大学 Rfid系统以及在节能模式下操作该系统的方法
CN101441706A (zh) * 2008-11-28 2009-05-27 武汉理工大学 有源电子标签的双激活方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8830035B2 (en) * 2005-06-30 2014-09-09 Farpointe Data, Inc. Power consumption management for an RFID reader

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101122945A (zh) * 2006-08-11 2008-02-13 香港中文大学 Rfid系统以及在节能模式下操作该系统的方法
CN101441706A (zh) * 2008-11-28 2009-05-27 武汉理工大学 有源电子标签的双激活方法

Also Published As

Publication number Publication date
CN102831364B (zh) 2016-11-23
CN102831364A (zh) 2012-12-19

Similar Documents

Publication Publication Date Title
WO2012171297A1 (fr) Procédé de réveil de correspondance de signal, appareil et étiquette
EP2509032B1 (fr) Système d'application, et procédé s'y rapportant
WO2010037330A1 (fr) Procédé permettant la réduction de consommation d’énergie de carte sim radiofréquence en mode d’attente
WO2014110842A1 (fr) Procédé et dispositif pour identifier rapidement une étiquette électronique
CN102612122A (zh) 一种低功耗无线传感器网络系统及其控制唤醒方法
WO2010051728A1 (fr) Procédé de réduction de consommation d'électricité au repos pour carte de module d'identité d'abonné radiofréquence à l'aide d'un déclenchement par séquence
CN105050025A (zh) 一种基于低功耗蓝牙射频唤醒方法及装置
CN103745181B (zh) 一种低频激活有源标签的防冲突方法
US10135494B2 (en) Connection and synchronization with a device in a non-active state based on near field communication
CN102184445B (zh) 电子标签唤醒方法及电子标签
CN112232463B (zh) 低功耗rfid读写系统及方法
US20110248833A1 (en) Rfid system
CN102521555A (zh) 一种唤醒信号匹配方法
CN102831452A (zh) 一种有源rfid系统的低功耗运行方法
CN201181479Y (zh) 一种有源身份识别标签
CN113141571A (zh) Uwb通信装置和对应的操作方法
CN101093549A (zh) 射频识别系统的读写器的数据读取及标签的数据发送方法
WO2009131197A1 (fr) Dispositif de lecture/écriture et programme
CN102799839B (zh) 有源rfid系统同步唤醒通信的方法
CN106779019A (zh) 一种智能包装的超低功耗无线传感标签硬件
KR101001681B1 (ko) 능동형 ｒｆｉｄ 시스템 및 그의 태그 웨이크 업 제어 방법
CN103605996B (zh) 一种有源射频识别系统
JP7394472B2 (ja) 低消費電力で通信衝突を低減する無線周波数識別通信方法及びそれを使用する無線周波数識別通信システム
EP4210234A1 (fr) Dispositif de communication et procédé de fonctionnement
CN105322977A (zh) 一种有源rfid标签低功耗数据接收装置及其方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11867921

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11867921

Country of ref document: EP

Kind code of ref document: A1