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Publication numberCN101809815 A
Publication typeApplication
Application numberCN 200880108363
PCT numberPCT/US2008/011002
Publication date18 Aug 2010
Filing date23 Sep 2008
Priority date24 Sep 2007
Also published asCA2696413A1, CA2696413C, CN101809815B, EP2195880A1, EP2195880A4, US7916000, US20090109003, WO2009042109A1
Publication number200880108363.X, CN 101809815 A, CN 101809815A, CN 200880108363, CN-A-101809815, CN101809815 A, CN101809815A, CN200880108363, CN200880108363.X, PCT/2008/11002, PCT/US/2008/011002, PCT/US/2008/11002, PCT/US/8/011002, PCT/US/8/11002, PCT/US2008/011002, PCT/US2008/11002, PCT/US2008011002, PCT/US200811002, PCT/US8/011002, PCT/US8/11002, PCT/US8011002, PCT/US811002
InventorsGT凯罗, JT凯罗, RL塔克
Applicant库珀轮胎和橡胶公司
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
Automatic antenna tuner system for RFID
CN 101809815 A
Abstract
An automatic antenna tuner system for radio frequency identification system includes a pulse width modulator, a microprocessor for controlling the generation of a source signal from the modulator, capacitors for receiving the source signal from amplifiers and transmitting it to an inductor, a gate communicating with the capacitors for transmitting a resonating signal from the inductor and capacitors as a carrier signal and means for gating the carrier signal with the source signal to produce a compared signal to produce a string of pulses and means for varying capacitance to increase or decrease the count of the string of pulses.
Claims(10)  translated from Chinese
  1. 一种自动天线调谐系统,包括:(a)脉冲宽度调制器;(b)微处理器,用于控制来自所述调制器的源信号的频率的生成;(c)电感;(d)多个继电器触点和电容器,用于从所述放大器接收所述源信号并且将该源信号传送到所述电感,所述电感和所述电容器生成谐振信号;(e)门,该门通过一个或多个继电器触点与所述电容器通信以将所述谐振信号作为载波信号传送;(f)用于对所述载波信号与所述源信号进行门控以产生与晶体进行门控的比较信号从而产生脉冲串的装置,所述微处理器具有(i)用于确定所述脉冲串的计数值的计数器以及(ii)用于改变电容以增加或减小所述脉冲串的计数值的装置。 An automatic tuning antenna system comprising: (a) a pulse width modulator; (b) a microprocessor for controlling the frequency of the source signal generated from said modulator; (c) the inductor; (d) a plurality of relay contacts and a capacitor, for receiving said source signal from the amplifier and the source signal is transmitted to said inductor, said inductor and said capacitor to generate a resonant signal; (e) a door through one or more a capacitor in communication with said relay contacts to said resonant signal transmitted as a carrier signal; (f) for the carrier signal with the source signal to produce a gated gated crystal to generate the comparison signal burst means, said microprocessor having (i) means for determining said burst counter count value and (ii) for changing the capacitance to increase or decrease the count value of said pulse train means.
  2. 2.根据权利要求1所述的自动天线调谐系统,其中所述调谐系统连接到位于设施中的天线并且连接到计算机或微处理器,并且所述自动天线调谐系统还包括多个定位在所述设施中的间隔开的RFID发射机应答器,所述RFID发射机应答器适合于从所述计算机或微处理器接收信号并且将这样的信号传送回所述天线。 2. The automatic tuning antenna system according to claim 1, wherein said tuning system is connected to an antenna located in the facility and is connected to a computer or microprocessor, and the automatic tuning antenna system further comprises a plurality of positioning in the facility spaced RFID transponder, the RFID transponder is adapted to receive a signal from the computer or microprocessor, and thus a signal transmitted back to the antenna.
  3. 3. 一种自动天线调谐系统,包括:(a)脉冲宽度调制器;(b)微处理器,用于控制来自所述调制器的源信号的频率的生成;(c) 一个或多个放大器,用于放大所述源信号;(d)电感;(e)多个继电器触点和电容器,用于从所述放大器接收所述源信号并且将该源信号传送到所述电感,所述电感和所述电容器生成谐振信号;(f)门,该门通过一个或多个继电器触点与所述电容器通信以将所述谐振信号作为载波信号传送;(g)用于对所述载波信号与所述源信号进行门控以产生与晶体进行门控的比较信号从而产生脉冲串的装置,所述微处理器具有(i)用于确定所述脉冲串的计数值的计数器以及(ϋ)用于改变电容以增加或减小所述脉冲串的计数值的装置。 An automatic tuning antenna system comprising: (a) a pulse width modulator; (b) a microprocessor for controlling the frequency of the source signal generated from said modulator; (c) one or more amplifiers , for amplifying said signal source; (d) inductors; (e) a plurality of relay contacts and a capacitor, for receiving said source signal from the amplifier and the source signal is transmitted to the inductance, the inductance and generating said resonant capacitor signal; (f) a door through one or more relay contact and the capacitor to the resonant communication signal as a carrier signal transmitted; (g) for the carrier signal and the source signal is gated to produce a crystal gated comparison signal to produce bursts of means, said microprocessor having (i) for determining the pulse count value of the counter and train (ϋ) with change in the capacitance to increase or decrease the count value of said pulse train means.
  4. 4. 一种用于调谐射频识别系统(RFID)的天线的方法,包括以下步骤:(a)以一个频率从脉冲宽度调制器发出源信号;(b)放大所述源信号并将所述源信号传送到多个电容器并且传送到电感,每个电容器具有继电器触点;(c)通过一个或多个电容器传送来自所述电感的信号以形成载波信号;(d)对所述载波信号与所述源信号进行门控以产生比较信号;(e)比较所述载波信号与所述源信号相比在相位方面是否超前或滞后90度;(f)添加或减少电容以根据需要来改变所述比较信号的每个周期的计数值,从而在所述载波信号和所述源信号之间建立90度相位。 4. A method for tuning a radio frequency identification system (RFID) antenna, comprising the steps of: (a) at a frequency source signal sent from the pulse width modulator; the source signal and (b) amplifying the source signal is transmitted to a plurality of capacitors and transferred to the inductor, each capacitor having a relay contact; (c) transmitting a signal from the inductor through one or more capacitors to form a carrier signal; (d) for the carrier signal and the gating said source signal to produce a comparison signal; (e) comparing the carrier signal is compared with the source signal lead or lag by 90 degrees in terms of phase; (f) to add or reduce the capacitance required to change the the count value of each cycle of the comparison signal, so as to establish between the 90 degree phase carrier signal and said source signal.
  5. 5.根据权利要求4所述的方法,还包括增加电容以减小每个周期的脉冲数目或者减小电容以增加每个周期的脉冲数目的步骤。 5. The method according to claim 4, further comprising increasing the capacitance to reduce the number of pulses per cycle to increase or decrease the capacitance of the pulse number of the step of each cycle.
  6. 6.根据权利要求4所述的方法,还包括以下步骤:(a)在与所述调谐系统通信的设施中定位所述天线;(b)将多个RFID发射机应答器定位在所述设施中;(c)将来自计算机或微处理器的信号传送到所述RFID发射机应答器中的一个或多个;以及(d)将来自所述一个或多个RFID发射机应答器的信号传送到所述天线和所述计算机。 6. The method according to claim 4, further comprising the steps of: (a) positioning said tuning system in communication with the antenna facility; (b) a plurality of RFID transponders located in the facility signal transmission and (d) from the one or more RFID transponders;; the signal (c) from the computer or microprocessor to said RFID transponder in one or more of to the antenna and the computer.
  7. 7.根据权利要求4所述的方法,还包括通过与门来将所述比较信号与晶体进行门控以产生限定每个周期的计数值的脉冲串。 7. The method according to claim 4, further comprising comparing by the signal to the AND gate gating the crystal to produce a count value defining each cycle of the pulse train.
  8. 8.一种用于调谐射频识别系统的天线的方法,包括以下步骤:(a)通过源信号以一个频率、一个相位将功率递送到电感;(b)通过一个或多个电容将来自所述电感的谐振信号传送到门;(c)传送来自所述门的载波信号并且通过与门对所述载波信号进行门控以与所述源信号结合,从而产生与晶体进行门控以产生脉冲串的比较信号;(d)将所述源信号的相位与所述载波信号的相位进行比较;以及(e)如果而且仅如果所述源信号的相位和所述载波信号的相位的相差大于或小于90 度,则向来自所述电感的信号添加或减少电容。 8. A method of tuning the antenna for the radio frequency identification system, comprising the steps of: (a) the source signal by a frequency, a phase of the power delivered to the inductor; (b) from the one or more capacitors resonant inductor is transferred to the gate signal; (c) transmitting a carrier signal from the gate through the AND gate of the carrier signal is gated with the combination of the source signal, thereby generating a crystal to generate a burst gating The comparison signal; (d) with the phase of the phase of the carrier signal of the source signal is compared; and (e) if and only if the phase of the phase of the carrier signal and the source signal is greater than or less than the difference between 90 degrees, the signals from the inductor to add or reduce the capacitance.
  9. 9.根据权利要求8所述的方法,还包括对来自所述天线的信号进行编码并且将经过编码的信号传送到远程接收设备的步骤。 9. The method according to claim 8, further comprising a signal from the antenna and the encoding of the encoded signal is transmitted to a remote receiving device step.
  10. 10.一种用于控制设施中的物品的库存的方法,包括以下步骤:(a)将天线和多个RFID发射机应答器定位在所述设施中;(b)将天线调谐系统用于所述天线,所述调谐系统包括脉冲宽度调制器和电感;(c)将来自所述脉冲宽度调制器的源信号传送到多个电容器并且传送到所述电感,每个电容器具有继电器触点;(d)将来自所述电感的信号传送通过一个或多个电容器以形成载波信号;(e)对所述载波信号与所述源信号进行门控以产生比较信号;(f)比较所述载波信号与所述源信号相比在相位方面是否超前或滞后90度;(g)添加或减少电容以根据需要来改变所述比较信号的每个周期的计数值,从而在所述载波信号和所述源信号之间建立90度相位;(h)将来自计算机或微处理器的信号传送到所述RFID发射机应答器中的一个或多个;以及(i)将来自所述一个或多个RFID发射机应答器的信号传送到所述天线和所述计算机。 10. An inventory control facility for articles, comprising the steps of: (a) the antenna and a plurality of RFID transponders located in the facility; (b) the antenna tuning system for the said antenna, said tuning system includes a pulse width modulator and an inductor; (c) from the pulse width modulator of the source signal is transmitted to a plurality of capacitors and transferred to the inductor, each capacitor having a relay contact; ( d) transmitting a signal from the inductor through one or more capacitors to form a carrier signal; (e) for said source signal and said carrier signal to produce a comparison signal gating; (f) comparing the carrier signal Compared with the source signal in terms of whether the phase lead or lag by 90 degrees; (g) to add or subtract capacitance required to change each period of the comparison signal, the count value, whereby said carrier signal and said 90 is established between the phase of source signals; (h) from the computer or microprocessor signal to the RFID transponder of one or more; and (i) from the one or more RFID transponder signal is transmitted to the antenna and the computer.
Description  translated from Chinese

用于RFID的自动天线调谐器系统[0001] 相关申请的交叉引用 Cross-automatic system for RFID antenna tuner of [0001] REFERENCE TO RELATED APPLICATIONS

[0002] 本申请基于并且要求2007年9月24日提交的美国临时申请No. 60/994,834的权 [0002] This application is based upon and claims the United States September 24, 2007 filed Provisional Application No. 60 right / 994,834 of

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背景技术 Background

[0003] 在制造和使用RFID (射频识别)时,该技术被分成两个主要的组;第一组是通过紧密耦合到阅读器来获取功率的无源标签,由此使得该无源标签能够传送信息或将信息返回到阅读器。 [0003] In the manufacture and use of RFID (radio frequency identification), the technology is divided into two main groups; the first group is to get the power of a passive tag by tightly coupled to the reader, thereby making the passive tags can transfer information or return information to the reader. 第二组是有源标签,有源标签具有它们自己的功率存储能力,比如电池、电容器或其它设备。 The second group is active tags, active tags have their own power storage capacity, such as a battery, capacitor or other device. 利用由阅读器生成以请求有源标签传送数据的RF信号来查询该有源标签,其中所述数据由该阅读器接收。 Generated by the reader to use active tags transmit data request signals to check the active RF tag, wherein said data received by the reader. 无源标签典型地具有几英寸到一米的范围。 Passive tags typically have a range of several inches to one meter. 有源标签可以传送几十米,但是因为电池的限制而具有有限的寿命。 Active tags can transmit several tens of meters, but because of limitations which have limited battery life. 有源标签因为电池或电容器的有限保存期限而具有有限的寿命。 Active tags because of the limited shelf life of a battery or a capacitor having a limited lifetime.

[0004] 现有技术包括许多针对用于RFID系统的天线调谐的专利。 [0004] The prior art includes a plurality of antennas for RFID system for tuning the patent. 这些专利中的一个是美国专利No. 5,491,715,其提供了用于将天线谐振电路的谐振频率与发射机输出的输出频率匹配的方法和系统。 One of these patents is U.S. Patent No. 5,491,715, which provides a method and system for the resonance frequency of the transmitter output and the antenna resonance circuit to match the output frequency. 供电信号被传送到天线谐振电路,该天线谐振电路包括在操作中可变地更改谐振电路的谐振频率的调谐电路。 Power signal is transmitted to the antenna resonance circuit, the antenna resonant circuit comprises a change in the operating variable to the resonance frequency of the resonant circuit tuned circuit. 在天线谐振电路的输出端提供与谐振频率和供电信号之间的频率差具有已知关系的相位相关信号。 Frequency difference between the output terminal of the antenna resonance circuit and the resonance frequency and power providing signal having a known relationship between the phase correlation signal. 然后,相位比较接收该供电信号和相位相关信号,并相应地基于该已知的相位关系调整谐振电路的谐振频率。 Then, the received phase comparison signal and the phase of the power-related signal, and accordingly, based on the known phase relationship adjusting the resonant frequency of the resonant circuit.

发明内容 DISCLOSURE

[0005] 本发明的自动天线调谐设备提供(1)用于有源RFID发射机应答器标签的唤醒信号以及(2)用于操作无源RFID发射机应答器无源标签或大量传感器、接收机、发射机或其它电气或电子设备的功率。 [0005] The automatic antenna tuning device of the invention provides (1) a wake-up signal active RFID transponder tag and (2) for the operation of the passive RFID passive tag or transponder number of sensors, receivers , transmitter power or other electrical or electronic equipment.

[0006] 本发明的天线调谐器可以为四英尺之外的30乘以60英尺的范围中的无源标签加电,并且可以被用来唤醒在被唤醒之前不使用电池电流的有源发射机应答器标签,从而将其寿命增加到超过在其处于持续唤醒状态情况下的期望寿命。 [0006] The antenna tuner of the present invention may be four feet beyond the 30 by 60-foot range passive tag is powered up and can be used to wake up without a battery current active transmitter before being awakened transponder tag, which will increase its life than it is in life expectancy continued in the awake state case.

[0007] 在本发明的指导下,功率生成系统被用来控制远程操作的回路天线。 [0007] Under the guidance of the present invention, the power generation system is used to control loop antenna remote operation. 该回路天线生成可以被用来对RFID发射机应答器标签设备、传感器、接收机、发射机或其它电气或电子设备加电的电磁场。 The loop antenna may be used to generate the RFID transponder tag equipment, sensors, receivers, transmitters, or other electrical or electronic equipment powered electromagnetic field. 这一概念使得大量的位于架子、物架、货板等上的这些远程电子设备收集数据、报告返回到用于管理的中央计算机以用于跟踪该设施的操作。 This concept makes a lot of located the shelf, these remote electronic device to collect data rack, on pallets, etc., reported back to a central computer for management to operate the facility for tracking. 这些电子设备典型地没有电池并因此需要最小维护或者无需维护。 These electronic devices are typically no batteries and therefore require minimal maintenance or no maintenance. 某些设备会有电池但完全处于休眠状态、汲取很少电流或不汲取电流,并且由来自天花板、墙壁或地板中的回路天线的电磁信号唤醒。 Some devices have a battery but totally dormant, draw little or no current draw current, and is woken up by an electromagnetic signal from the ceiling, wall or floor of the loop antenna.

[0008] 为了高效,该回路天线应该具有最高品质或“Q因子”。 [0008] In order to efficiently, the loop antenna should be of the highest quality or "Q factor." Q是感抗除以其电阻的比值。 Q is the ratio of the inductance divided by its resistance. 通过这样的关系,线圈(导线)的电阻越低,回路的Q或品质就越高。 Through this relationship, a coil (wire), the lower the resistance, Q or quality of the circuit is higher. 这意味着调谐很关键并且必须一直保持。 This means that the tuning is critical and must be kept. 在设施中的远程功率生成回路天线可能容易被其所处的环境影响。 In power generation facilities in remote loop antenna may easily be the environmental impact of its located. 如果大的金属架或物品被远离或者靠近天线移动,则会影响调谐。 If large metal rack or items to be moving away from or close to the antenna, it will affect the tuning. 天线的效率可能会被严重影响到该天线不再被调谐到峰值并因此不能够执行其所需的功能。 The efficiency of the antenna may be seriously affected longer the antenna is tuned to a peak and thus can not perform its required function.

[0009] 为了一直使功率的生成最大化,重新调谐回路天线的需求很重要。 [0009] In order to maximize the power has been generated, the antenna needs re-tuned circuit is very important. 因为装置被重新定位在该设施中并且功率生成天线变成失谐的,所以效率降低了。 Because the device is repositioned in the facility and power generation antenna becomes detuned, the efficiency is reduced. 工人将不得不一次又一次到工厂去优化所述回路天线的调谐。 Workers will have to again and again to the factory to optimize the loop antenna tuning.

[0010] 在本发明的优选实施例的指导下,当天线生成功率时,该天线将电磁耦合到遍布该设施的远程电子设备。 [0010] Under the guidance of a preferred embodiment of the present invention, when the antenna power is generated, which is electromagnetically coupled to the antenna across the facility remote electronic device. 如果每次将一件装置重新定位在局部区域都可以自动地重新调谐回路天线,则无源电子设备的效率被保持在峰值并且对手动调整回路天线的需求被取消。 If every piece of the apparatus repositioned in the local area may be automatically re-tuning loop antenna, the efficiency of the passive electronic device is held in the peak and the demand for manual adjustment of the antenna circuit is canceled.

[0011] 本发明的自动天线调谐器被设计成以预定间隔测试回路天线的谐振以保持该回路天线的完整性。 [0011] Automatic antenna tuner of the present invention is designed to test the circuit at predetermined intervals to keep the antenna resonant antenna circuit integrity. 于是,当正在进行区域查询的计算机系统需要对遍布该设施的电子设备加电时,该回路天线将像被设计成对例如RFID发射机应答器标签或其它电子设备加电那样有效地工作。 Thus, when the computer system queries the ongoing regional needs throughout the facility when the electronic device is powered on, the loop antenna will be designed to be as such as RFID transponder tag or other electronic device is powered on so effectively.

[0012] 由该天线生成的电磁场还可以被编码以给接收设备提供指令以接通、断开或执行例如将新数据存储在存储器中、清除存储器或进入休眠之类的其它特定任务或操作。 [0012] The electromagnetic field generated by the antenna can also be encoded to provide instructions to the receiving device to turn on, off or to perform for example, the new data is stored in the memory, remove memory or enter other specific tasks like hibernate or operations.

[0013] 本发明的一个优选实施例是通过保持持续充电来增加超过当前电池技术的容量以对远程定位的电子设备供电,由此为这样的设备提供潜在无限的保存期限。 [0013] A preferred embodiment of the present invention is sustained by the charging current to increase beyond the capacity of the battery technology to power an electronic device located remotely, thereby providing potentially unlimited shelf life for such devices. 这将在利用装置的可靠性方面具有重要的优点。 This will have important advantages in terms of reliability use of the device. 本发明还提供用于医学、生物医学、夜视、GPS、无线电、 传感器、执行器和智能收集技术的外部功率源。 The present invention also provides for the medical, biomedical, night vision, GPS, radios, sensors, actuators and smart collection techniques external power source.

[0014] 电磁场天线典型地用来对RFID发射机应答器标签加电以回读用户或设备的标识。 [0014] electromagnetic field antenna is typically used for RFID transponder tag powered with readback identifies a user or device. 本发明的一个优选实施例是将天线放置在仓库、工厂或装运/接收台的天花板、墙壁或地板中。 A preferred embodiment of the present invention, the antenna is placed in warehouses, factories or shipping / receiving station ceiling, wall or floor. RFID发射机应答器标签设备、传感器、接收机、发射机或其它电气或电子设备被放置在这些天线的范围中并且不时地被它们的天线加电或唤醒。 RFID transponder tag equipment, sensors, receivers, transmitters, or other electrical or electronic device is placed in the scope of these antennas and from time to time they are powered up or wake-up antennas. 当这些RFID发射机应答器标签或其它电子设备被唤醒时,它们将会将它们的数据传送回正在控制这些天线的计算机系统。 When these RFID transponder tag or other electronic device to be awakened, they will transfer their data back to the computer is controlling the antenna system.

[0015] 本发明的自动调谐系统包括与主计算机通信的微处理器。 Automatic Tuning System [0015] The present invention comprises a microprocessor to communicate with a host computer. 主计算机将不时地用信号通知自动调谐系统要唤醒在其区域中的RFID设备、传感器、接收机、发射机或者电气或电子设备,并且将所接收的数据发送回计算机。 The host computer will occasionally signaled automatic tuning system to wake RFID equipment in its area, sensors, receivers, transmitters or electrical or electronic equipment, and the received data is sent back to the computer.

[0016] 微处理器将通过以指定的频率将电流驱动到天线中来为该天线加电。 [0016] microprocessor that will be powered by the antenna at a specified frequency in the current drive to the antenna. 例如,可以以125kHz的频率来驱动该天线。 For example, at a frequency of 125kHz to drive the antenna. 然后,微处理器将利用软件查看驱动或源信号的相位并且将其与天线上的载波信号的结果相位进行比较。 Then, the microprocessor will use the software to view the source signal or drive phase and comparing it with the results of the phase of the carrier signal on the antenna. 如果它们彼此异相接近90度,则该天线被适当的调谐。 If they are close to 90 degrees out of phase with each other, the antenna is properly tuned. 如果信号没有异相90度,则微处理器将或者添加或者移去电容以适当地调谐该天线。 If the signal is not 90 degrees out of phase, the microprocessor will either add or remove capacitor to properly tuning the antenna.

[0017] 在查阅了下面的对优选实施例和附图的详细描述之后,本发明的其它目的和优点对本领域技术人员来说将变得显而易见的。 [0017] After the inspection of the drawings and detailed description of the preferred embodiments below, other objects and advantages of the present invention to those skilled in the art will become apparent.

附图说明 Brief Description

[0018] 图1是示出由微处理器控制的自动天线调谐器的基本概念的示意图。 [0018] FIG. 1 is a schematic diagram illustrating a microprocessor controlled automatic antenna tuner basic concepts.

[0019] 图2是说明适当调谐的时序图。 [0019] FIG. 2 is a timing diagram appropriate tuning.

[0020] 图3是说明利用太多电容来调谐的时序图。 [0020] FIG. 3 is a diagram illustrating the use of too much capacitance to tune the timing chart. [0021] 图4是说明利用太少电容来调谐的时序图。 [0021] FIG. 4 is a diagram illustrating the use of too little capacitance to tune the timing chart.

[0022] 图5说明工厂中的无线RFID发射机应答器的供电。 [0022] Figure 5 illustrates powered wireless RFID transponder in the factory.

具体实施方式 DETAILED DESCRIPTION

[0023] 图1说明本发明的自动天线调谐器系统121的示意性基本电路。 [0023] Figure 1 illustrates the automatic antenna tuner system 121 of the present invention, a schematic basic circuit. 类似于Microchip 有限公司的PIC16F628的微处理器101控制脉冲宽度调制(PWM)输出管脚外部的源信号102的频率的生成。 Like PIC16F628 Microchip Limited microprocessor 101 controls the pulse width modulation (PWM) output pin external frequency source signal is generated 102. 对于该设计来说,该源信号102是125kHz,但是几乎可以是期望对其电磁场中的无线外围设备加电的任何频率。 For this design, the 102 is the source signal 125kHz, but it can be almost any desired frequency electromagnetic radio peripheral devices powered. 源信号102被M0SFET驱动器103放大并且然后被驱动到一对大型的(heavy)M0SFET晶体管104中。 M0SFET source signal 102 is amplified and then drive 103 is driven to a pair of large (heavy) M0SFET transistor 104. 例如,M0SFET驱动器103可以是由Microchip制造的像其模型No. TC4422那样的驱动器,其将功率放大到M0SFET 104需要的高容量输入的水平。 For example, M0SFET drive 103 may be manufactured by the Microchip as its model No. TC4422 as drive, which will be amplified to high power input required capacity M0SFET 104 levels. 这些M0SFET被设计成驱动大电流和高电压以便驱动一组电容器106。 These M0SFET is designed to drive high current and high voltage capacitor to drive a group of 106. M0SFET 104 可以是被International Rectifier 制造成像其模型No. JRF9530 和IRF530 那样的M0SFET。 M0SFET 104 can be manufactured by International Rectifier its imaging model No. JRF9530 and IRF530 as M0SFET. 这些电容器106各自由继电器触点105选择以调谐电容器106和电感107在125kHz处谐振。 These capacitors 106 free relay contacts 105 each selected to the tuning capacitor 106 and the inductor 107 resonates at 125kHz place.

[0024] 电感107可以是大量设备中的任何一个。 [0024] The inductor 107 may be any of a large number of devices. 例如,电感107可以是拉伸穿过设施的天花板、墙壁或地板的24规格线(24 gauge wire)或者一长段导线或导管形成的小的两英寸回路,或者是能够传导电流的许多其它材料形成的小的两英寸回路。 For example, the inductor 107 may be stretched a small two-inch 24 gauge wire through the loop facility ceiling, wall or floor (24 gauge wire) or a long guide wire or catheter segment is formed, it is capable of conducting current or many other materials the formation of a small two-inch loop. 该电感107的尺度可以一直达到30乘以60英尺,并且导线尺寸可以是2规格那么长。 The inductor 107 can always scale up to 30 by 60 feet and can be 2 wire size specifications so long. 在工厂中的典型应用可以是30乘以60英尺以便在覆盖合理范围的同时允许装置的自由流动。 Typical applications are in plant may be 30 multiplied by 60 feet in order to cover a reasonable range while allowing the free flow device. 成功的测试已示出电感107可以具有从自动调谐器拉伸到末端被接地到建筑物的金属框架的距离点的导线长度,该建筑物的地是回路的返回路径。 Successful tests have shown the inductor 107 may have stretched from the auto tuner to the end of the wire length is grounded to the metal frame of a building from the point of the building is a circuit ground return path. 在不限制本发明的范围或这样的导线的最大长度的情况下,在该测试中使用的导线长度是60英尺。 In the case of the maximum length do not limit the scope of the invention or of such wires, wire length used in this test is 60 feet.

[0025] 由M0SFET驱动器103、104加电的源信号102被通过一个或多个电容器106传送到电感107,该电感107选择性地通过一个或多个电容器106将谐振信号转发到门108。 [0025] by the source driver 103 M0SFET signal 102 is powered by one or more of the inductor 107 is transferred to capacitor 106, the inductor 107 selectively pass one or more of the resonant capacitor 106 forwards the signal to the gate 108. 该门108的输出是载波信号109。 The output of the gate 108 is the carrier signal 109. 期望的是,该载波信号109与源信号102相比在相位方面超前或滞后90度。 Desirably, the carrier signal 109 as compared to the signal source 102 is advanced or retarded by 90 degrees in terms of phase. 通过与门130对该载波信号109和源信号102进行门控以产生比较信号110。 AND gate 130 through 109 and the carrier signal source signal 102 is gated to produce a comparison signal 110. 通过与门131对该比较信号110和20MHz晶体112进行门控以产生一个脉冲串113, 微处理器101将使用该脉冲串113来确定该天线是否被适当地调谐。 AND gate 131 by the comparison signal 110 and 112 gated 20MHz crystal to generate a pulse train 113, the microprocessor 101 will use the burst 113 to determine whether the antenna is properly tuned.

[0026] 图2说明源信号102与来自门108的载波信号109之间的时序关系。 [0026] Figure 2 illustrates the timing relationship between the source signals 109 and 102 from the gate 108 of the carrier signal. 如果该天线被调谐到谐振,则如所示出的那样这两个信号之间的关系是90度。 If the antenna is tuned to resonance, as shown as the relationship between the two signals is 90 degrees. 如上面所指出的那样, 比较信号110是两个信号——即一起通过与门130进行逻辑与操作的源信号102和载波信号109——的结果。 As above, the comparison signal 110 is indicated above the two signals - i.e., together with the logic gate 130 and the operation of the source signal and the carrier signal 102 109-- results. 脉冲113被门控到该微处理器101中的计数器。 Pulse 113 is gated to the microprocessor 101 in the counter.

[0027] 在125kHz处,源信号102的“接通”时间是4uS,并且“断开”时间也是4uS。 [0027] In at 125kHz, the signal source 102 of the "on" time is 4uS, and "off" time is 4uS. 当天线被适当地调谐时,比较信号110 “接通”6uS并且“断开”2uS。 When the antenna is properly tuned, the comparison signal 110 "ON" 6uS and "off" 2uS. 这允许120个脉冲从20MHz 晶体112通过与门131的门控而到微处理器101及其计数器。 This allows 120 pulses from 20MHz crystal 112 through 131 and the gated door to the microprocessor 101 and the counter. 适当调谐的天线将产生近似120的数目的计数值。 Appropriate tuned antenna will produce approximately 120 the number of counts. 门延迟、上升和下降的次数将影响实际计数值。 Gate delay, rise and fall times will affect the actual count.

[0028] 图3说明当存在太多电容并且源信号102和载波信号109之间的相差被扩展时源信号102和载波信号109之间的时序关系。 [0028] Figure 3 illustrates capacitance and when there is too much difference when it is extended source signal and the carrier signal 102 109 102 between the source signal and the carrier signal timing relationships between the 109. 脉冲113的数目现在小于120,并且微处理器中的软件可以使得通过控制电容器106及其继电器触点105来添加更多电容直到计数值大约 Pulse number 113 is now less than 120, and the microprocessor in the software so that by controlling the capacitor 106 and the relay contacts 105 to add more capacitance until the count value of approximately

6为120。 6 to 120.

[0029] 图4说明当存在太少电容时源信号102和载波信号109之间的时序关系。 [0029] Figure 4 illustrates the timing relationship when too little capacitance between 109 102 and the carrier signal source signal is present. 再次, 软件将看到存在多于120个脉冲113并且添加一些电容直到计数值大约为120。 Again, the software will see there are more than 120 pulses 113 and add some capacitor until the count value of about 120.

[0030] 图5说明位于工厂的天花板中的天线122。 [0030] Figure 5 illustrates the factory in the ceiling of the antenna 122. 天线调谐器121被连接到控制该天线的操作的计算机120。 Computer antenna tuner 121 is connected to control the operation of the antenna 120.

[0031] 在天线下面是一堆货板123,在该货板上具有物品124。 [0031] In the antenna beneath a pile of pallets 123, the pallets have 124 items. 这些货板123中的三个货板被堆叠成一个单元。 123 of these pallets are stacked three pallets into one unit. 在每个货板上有RFID发射机应答器标签125,当该RFID发射机应答器标签125是有源标签时其将接收唤醒信号,或者当RFID发射机应答器标签125是无源标签时其将接收功率。 In each pallets with RFID transponder tag 125, when the RFID transponder tag is an active tag 125 when it will receive the wake-up signal, or when the RFID transponder tag 125 is a passive tag when it The received power. 计算机120将不时地发送命令到调谐器121。 Computer 120 sends a command to the tuner 121 from time to time. 该命令将告诉调谐器对该调谐器磁场中的所有发射机应答器标签125检查库存。 This command tells the tuner to the tuner in a magnetic field all transponder tag 125 to check inventory. 在该调谐器磁场中的那些发射机应答器标签将唤醒并发送回其ID,由此为计算机给出在那时以及在那个位置处在工厂地板上有什么的简短描述(snapshot)。 Those transponder tag field in the tuner will wake up and sent back to their ID, whereby the computer is given at that time and in that position in what is a short description (snapshot) on the factory floor. 如果库存不被经常移动,则该操作可能仅每天发生一次或者甚至每周一次。 If the stock is not moved frequently, the operation can take place only once a day or even once a week. 但是如果以更大的比例移动该库存,则计算机将在需要的情况下每一小时或者甚至每一分钟进行一次库存检查。 However, if a larger proportion of the movement of the stock, the computer will perform a stock check in case of need every hour or even every minute. 然后发射机应答器标签将其ID发送回到天线122,并且如果发射机应答器标签被其它数据编程的话,该发射机应答器标签可能将这样的数据发送回到天线122,。 Then the transponder sends back its ID tag antenna 122, and if the transponder tag by other data programming, the transponder tags may transmit such data back to the antenna 122 ,. 天线调谐器系统是计算机系统的外围设备。 Antenna tuner system is a peripheral device of the computer system. 这意味着计算机可以在任何时候访问(一个或多个)调谐器,并且更新或检验库存,或者在该库存在工厂中移动的时候跟踪其位置。 This means that the computer can access at any time (one or more) tuner, and update inventory or inspection, or in the stock moved in the factory when the track its location.

[0032] 本发明的上面详细描述以说明性的目的给出。 [0032] The present invention will be described in detail above, to give illustrative purposes. 对本领域技术人员来说显而易见的是,在不偏离本发明范围的情况下可以进行许多改变和修改。 The skilled artisan is obvious that without departing from the scope of the present invention may be made that many changes and modifications. 因此,将以说明并且非限制的意义来解释前面描述的整体,本发明的范围仅由所附权利要求限定。 Accordingly, and will be described non-limiting sense to interpret the whole previously described, the scope of the present invention is limited only by the appended claims.

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Classifications
International ClassificationH01Q1/50
Cooperative ClassificationH03H7/40, H03J2200/10
European ClassificationH03H7/40
Legal Events
DateCodeEventDescription
18 Aug 2010C06Publication
6 Oct 2010C10Request of examination as to substance
12 Feb 2014C14Granted