WO2012151861A1 - 降低nfc装置功耗的方法及终端设备 - Google Patents

降低nfc装置功耗的方法及终端设备 Download PDF

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Publication number
WO2012151861A1
WO2012151861A1 PCT/CN2011/081203 CN2011081203W WO2012151861A1 WO 2012151861 A1 WO2012151861 A1 WO 2012151861A1 CN 2011081203 W CN2011081203 W CN 2011081203W WO 2012151861 A1 WO2012151861 A1 WO 2012151861A1
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Prior art keywords
sensor
calling module
terminal device
foreign object
nfc device
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PCT/CN2011/081203
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English (en)
French (fr)
Inventor
陈俊
饶海波
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中兴通讯股份有限公司
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Publication of WO2012151861A1 publication Critical patent/WO2012151861A1/zh

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Classifications

    • 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
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0254—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
    • H04M1/72412—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories using two-way short-range wireless interfaces
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/04—Details of telephonic subscriber devices including near field communication means, e.g. RFID
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/12—Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
    • 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

  • the present invention relates to the field of NFC technology, and in particular, to a method and a terminal device for reducing power consumption of an NFC device. Background technique
  • NFC Near Field Communication
  • NFC's integration of contactless readers, contactless cards and Peer-to-Peer functionality into a single chip opens up countless new opportunities for consumers' lifestyles. It can be an open interface platform that can be quickly and actively set up for wireless networks, or it can be a virtual connector that serves existing cellular networks, Bluetooth and wireless 802.11 devices.
  • NFC NFC's listening function
  • the terminal device when used as the calling device, it usually takes one.
  • the fixed frequency initiates the calling party.
  • the frequency will be very high. Therefore, the listening will consume more power for the terminal equipment, and the calling party should also initiate at a fixed frequency during most of the time periods that do not need to be detected. Detection, there is a case where power consumption is meaningless.
  • the main object of the present invention is to provide a method for reducing power consumption of an NFC device, which aims to reduce power consumption of the terminal device.
  • the present invention provides that the NFC device is disposed in a terminal device, and the terminal device includes a sensor for sensing a distance of a foreign object, and the method includes the following steps:
  • the calling module of the preset NFC device is in a sleep state
  • the sensor is enabled to detect whether a foreign object is within the working range of the calling module; if yes, controlling the sensor to issue a start signal to activate the calling module to operate.
  • the sensor is a light sensor for detecting whether a foreign object is in the working range of the calling module according to the opacity.
  • the method further includes:
  • the sensor is controlled to notify the calling module to stop working and enter a sleep state.
  • the calling module performs the work specifically:
  • the present invention further provides a terminal device provided with an NFC device, the NFC device being disposed in a terminal device, the terminal device comprising a sensor for sensing a distance of a foreign object, the terminal device further comprising:
  • a state setting module configured to preset a calling module of the NFC device to be in a sleep state
  • a sensor control module configured to enable the sensor to detect whether a foreign object is in a working range of the calling module
  • the sensor is controlled to issue a start signal to activate the calling module to operate.
  • the senor is a laser sensor or an infrared sensor.
  • the sensor control module is further configured to:
  • the sensor is enabled after the calling module performs work to detect whether the foreign object leaves the working range of the calling module; If so, the sensor is controlled to notify the calling module to stop working and enter a sleep state.
  • the calling module is specifically configured to:
  • the terminal device is a mobile communication terminal.
  • the present invention first sets the calling module of the NFC device to a sleep state, and senses whether the foreign object is close to the terminal device and is in the working range of the calling module through the sensor in the terminal device, and if so, starts the calling module.
  • the work can keep the calling module in a sleep state when no foreign object is in the working range of the calling module, and does not need to consume power, thereby reducing the power consumption of the terminal device.
  • FIG. 1 is a flow chart of an embodiment of a method for reducing power consumption of an NFC device according to the present invention
  • FIG. 2 is a flow chart of another embodiment of a method for reducing power consumption of an NFC device according to the present invention
  • FIG. 3 is a flow chart of the operation of the calling module of the present invention
  • FIG. 4 is a schematic structural diagram of an embodiment of a terminal device including power consumption of an NFC device according to the present invention
  • FIG. 5 is a flowchart showing the operation of the terminal device according to the present invention including power consumption of the NFC device.
  • the NFC device is built in the terminal device, and the terminal device may be a handheld mobile terminal device, such as a mobile phone, a PDA, or other mobile payment device.
  • the NFC device is provided with a calling module for initiating a calling request, and communicating with the called party to implement data interaction.
  • a flowchart of a method for reducing power consumption of an NFC device includes:
  • Step S10 The preset calling module is in a sleep state.
  • the sleep state means that the calling module is in the power saving mode, and does not initiate the calling request mode according to the fixed frequency.
  • Step S20 enabling the sensor to detect whether a foreign object is in the working range of the calling module;
  • the terminal device is provided with a proximity sensor for sensing the distance between the foreign object and the terminal device, and the sensor may be a light sensor. It can also be a laser sensor or an infrared sensor.
  • a laser sensor or a light sensor for sensing a human face is provided.
  • the control of the state of the calling module of the NFC device is realized by controlling the original sensor in the terminal device to transmit a signal to the NFC device.
  • the output pin of the sensor is connected to the main control chip of the NFC device through the control circuit, and the signal is output to the main control chip of the NFC device, and then the control chip sends a control signal to control the calling module.
  • the working range of the calling module refers to the working distance that it can establish a connection with the called party and perform data interaction.
  • the sensor can detect whether a foreign object is close to the terminal device in real time, and determine whether it moves to the working range of the calling module.
  • Step S30 if yes, the control sensor sends a start signal to start the calling module to work.
  • the sensor can sense the actual distance between the foreign object and the terminal device, for example, 20cm or 10cm. If it reaches 10cm, it means that the foreign object is within the working range of the calling module of the NFC device. At this time, the control sensor sends a start signal to end it. Sleep state. The process of this step is related to whether the mobile phone senses that the face is close, and then the result is that a certain part is in a working state or a closed state according to the sensing result.
  • the calling module of the NFC device is set to the sleep state, and the existing sensor of the terminal device is effectively utilized to sense whether the foreign object is close to the terminal device and is in the calling mode.
  • the working range of the block if it is, the calling module is activated, and the starting time and frequency of the calling module of the NFC device in the terminal device can be adjusted as needed, thereby avoiding the NFC device being in a meaningless work for most of the time, It can well control the power consumption of the terminal equipment, extend the use time of the single charging of the terminal equipment, and also save the CPU load of some terminal equipment.
  • the senor is preferably a light sensor that detects in real time whether or not foreign objects are within the working range of the calling module based on the degree of shading.
  • the sensor can also be a laser sensor or an infrared sensor.
  • the laser sensor or the infrared sensor can be used to sense the distance between the foreign object and the local device. In practical applications, the processing of the distance signal is similar to that of the light sensor, and will not be described in detail here.
  • the method further includes:
  • Step S40 Enable the sensor to detect whether the foreign object leaves the working range of the calling module.
  • Step S50 if yes, control the sensor to notify the calling module to stop working and enter a sleep state.
  • the calling module works, the distance between the foreign object and the terminal device is still detected.
  • the light sensor (or other sensor) detects that the object starts to move away from the terminal device and determines whether the detection distance has been exceeded; if the sensor detection module detects that the object has exceeded the detection distance, the object Exceeding the working range of the calling module, the calling module is notified to stop the sending of the fixed-frequency calling request, thereby further reducing power consumption.
  • step S30 the calling module performs the following operations: Step S31, according to the received start signal, the calling request is sent according to the preset frequency; if the start signal is received, the object is indicated. Entering the working range, the calling request is sent at this time to establish a connection relationship with the foreign object.
  • the sending frequency of the calling request can be flexibly set according to the working environment.
  • Step S32 receiving feedback information of the foreign object to the calling request; if receiving the feedback information, It is a peer device that can be used for data interaction and is compatible with the party.
  • the next step can be performed. If there is no feedback information, the object is not the peer device that is adapted to the local end.
  • Step S33 establishing a connection with the foreign object and performing data interaction.
  • a mobile phone establishes a connection with an external device and makes a payment.
  • the present invention provides a terminal device including an NFC device, which can implement the above method.
  • the terminal device is provided with an NFC device 100, and the NFC device 100 is provided with a calling module 101.
  • the terminal device further includes:
  • the state setting module 200 is configured to preset that the calling module 101 is in a sleep state
  • a sensor 300 configured to sense a foreign object distance
  • the sensor control module 400 is configured to enable the sensor 300 to detect whether a foreign object is in the working range of the calling module 101;
  • the control sensor 300 issues a start signal to activate the calling module 101 to operate.
  • the sensor 300 is a proximity sensor originally provided in the terminal device for sensing the distance between the foreign object and the terminal device.
  • the sensor 300 may be a light sensor or a laser sensor or an infrared sensor.
  • the sensor control module 400 can be a control circuit, or a control chip, or control software loaded on the terminal device.
  • the working range of the calling module 101 refers to the working distance that it can establish a connection with the called party and perform data interaction. In the embodiment of the present invention, the sensor 300 can detect whether a foreign object is close to the terminal device in real time, and determine whether it moves to the working range of the calling module 101.
  • the calling module 101 of the NFC device 100 is set to the sleep state, and the existing sensor 300 of the terminal device is effectively used to sense whether the foreign object is close to the terminal device and is in the working range of the calling module. If yes, Then, the startup signal is sent to start the operation of the calling module 101, and the startup time and frequency of the calling module 101 of the NFC device 100 in the terminal device can be adjusted as needed, thereby avoiding that the NFC device 100 is in a meaningless operation for most of the time, Good control of the power consumption of the terminal device, extending the use time of the single device of the terminal device, It can save the CPU load of some terminal devices.
  • the sensor control module 400 is further configured to:
  • the sensor 300 is activated after the calling module 101 performs work to detect whether the foreign object leaves the working range of the calling module 101;
  • the control sensor 300 notifies the calling module 101 to stop working and enters a sleep state. That is to say, when the calling module 101 is working, the sensor control module 400 still controls the sensor 300 to detect the distance between the foreign object and the terminal device. When the foreign object starts to leave the terminal device, the sensor 300 (or other sensor) detects that the object starts to move away from the terminal device and determines whether the detection distance has been exceeded. If the sensor 300 detects that the object has exceeded the detection distance, the object Exceeding the working range of the calling module 101, the calling module 101 is notified to stop the transmission of the fixed-frequency calling request, thereby achieving the purpose of further reducing power consumption.
  • the calling module 101 is specifically configured to:
  • the calling request is sent according to the preset frequency; the activation signal is sent by the sensor 300, and if the calling module 10 receives the activation signal, it indicates that an object enters the working range, and the calling module 10 sends the calling request.
  • the sending frequency of the calling request can be flexibly set according to the working environment.
  • Receiving feedback information of the foreign object to the calling request if receiving the feedback information, it is a peer device that can perform data interaction and is adapted to the party, and can establish a connection with the foreign object and perform data interaction; if there is no feedback information , indicating that the object is not the peer device that is adapted to the local end, and can enter the sleep state at this time.
  • the terminal device is preferably a mobile communication terminal, such as a mobile phone, a personal digital assistant (PDA), or the like.
  • a mobile communication terminal such as a mobile phone, a personal digital assistant (PDA), or the like.
  • PDA personal digital assistant
  • Step S201 turning on the sensor 300;
  • Step S202 determining whether the object is approaching; taking the light sensor as an example, determining whether the distance of the calling module is met after the object is approached by the shading degree. If not, the detection continues and the calling module 101 continues to sleep. If yes, proceed to step S203;
  • Step S203 it is determined whether the calling module can be started; if not, return to step S202; if yes, execute step S204;
  • Step S204 the calling module 101 is started; for example, the sensor 300 sends a start signal to the calling module 101, the calling module 101 stops sleeping, enters a normal working mode, and initiates a calling request to the called party in real time according to a certain frequency.
  • Step S205 performing data interaction with the foreign object
  • Step S206 the sensor 300 continues to detect whether the distance of the object changes. If not, no operation is performed; if not, the process proceeds to step S207.
  • Step S207 it is determined whether the calling module can be hibernated; if yes, then proceeds to step S208, and if not, returns to step S205;
  • Step S208 notifying the calling module 101 to stop working and entering the sleep mode.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明公开了一种降低NFC装置功耗的方法和终端设备，所述NFC装置置于终端设备中，该终端设备包括用以感应外物距离的传感器，所述方法包括以下步骤：预设NFC装置的主叫模块处于休眠状态；启用所述传感器，检测是否有外物处于所述主叫模块的工作范围内；若是，则控制所述传感器发出启动信号启动所述主叫模块进行工作。本发明可在无外物处于主叫模块的工作范围时，使主叫模块一直处于休眠状态，而无需耗电，从而降低终端设备的功耗。

Description

降低 NFC装置功耗的方法及终端设备 技术领域
本发明涉及 NFC技术领域，尤其是涉及一种降低 NFC装置功耗的方法 和终端设备。 背景技术
近场通信（ NFC, Near Field Communication )是一种短距离的高频无线 通信技术， 该技术允许电子设备之间进行非接触式点对点数据传输（在十 厘米内）， 以交换数据。
NFC将非接触读卡器、 非接触卡和点对点 （ Peer-to-Peer )功能整合到 一块芯片， 为消费者的生活方式开创了不计其数的全新机遇。 其可以是一 个开放接口平台， 可以对无线网络进行快速、 主动设置； 也可以是一个虚 拟连接器， 服务于现有蜂窝状网络、 蓝牙和无线 802.11设备。
由于 NFC技术的广泛应用和小巧化， 使其在很多终端设备上都能够得 到很好的应用， 为终端设备的支付或者各种加密信息的共享等开辟了道路。 但也正是因为其的广泛应用， 使 NFC的侦听功能也集成到终端设备中来， 由此带来功耗问题： 现有技术中， 当终端设备作为主叫设备时， 通常会以 一个固定频率发起主叫， 为了达到实时检测性， 该频率会很高， 因此， 侦 听对于终端设备而言会比较耗电， 而且在大部分无需检测的时间段， 主叫 也要以固定频率发起检测， 存在没有意义地耗电的情况。 发明内容
本发明的主要目的在于提供一种降低 NFC装置功耗的方法， 旨在降低 终端设备的功耗。 为了实现发明目的， 本发明提出所述 NFC装置置于终端设备中， 该终 端设备包括用以感应外物距离的传感器， 所述方法包括以下步驟：
预设 NFC装置的主叫模块处于休眠状态；
启用所述传感器， 检测是否有外物处于所述主叫模块的工作范围内； 若是， 则控制所述传感器发出启动信号启动所述主叫模块进行工作。 优选地， 所述传感器为光感传感器， 用以根据遮光度实时检测是否有 外物处于主叫模块的工作范围内。
优选地， 在主叫模块进行工作之后还包括：
启用所述传感器， 检测外物是否离开主叫模块的工作范围；
若是， 则控制所述传感器通知主叫模块停止工作， 进入休眠状态。 优选地， 所述主叫模块进行工作具体为：
根据传感器发出的所述启动信号， 按预设频率发出主叫请求； 接收外物对主叫请求的反馈信息；
与外物建立连接并进行数据交互。
本发明还提供一种设有 NFC装置的终端设备，所述 NFC装置置于终端 设备中， 该终端设备包括用以感应外物距离的传感器， 所述终端设备还设 有：
状态设置模块， 用以预设 NFC装置的主叫模块处于休眠状态； 传感器控制模块， 用于启用所述传感器， 检测是否有外物处于所述主 叫模块的工作范围内；
若是， 则控制所述传感器发出启动信号启动主叫模块进行工作。
优选地， 所述传感器为激光传感器或红外传感器。
优选地， 所述传感器控制模块还用于：
在主叫模块进行工作之后启用所述传感器 , 检测外物是否离开主叫模 块的工作范围； 若是， 则控制所述传感器通知主叫模块停止工作， 进入休眠状态。 优选地， 所述主叫模块具体用于：
根据传感器发出的所述启动信号， 按预设频率发出主叫请求； 接收外物对主叫请求的反馈信息；
与外物建立连接并进行数据交互。
优选地， 所述终端设备为移动通信终端。
由上可知， 本发明首先将 NFC装置的主叫模块设置为休眠状态， 并通 过终端设备中的传感器感应外物是否靠近终端设备并是否处于主叫模块的 工作范围， 若是， 则启动主叫模块工作， 可在无外物处于主叫模块的工作 范围时， 使主叫模块一直处于休眠状态， 而无需耗电， 从而降低终端设备 的功耗。 附图说明
图 1是本发明降低 NFC装置功耗的方法一实施例的流程图；
图 2是本发明降低 NFC装置功耗的方法另一实施例的流程图； 图 3是本发明主叫模块进行工作的流程图；
图 4是本发明包含 NFC装置功耗的终端设备一实施例的结构示意图； 图 5 是本发明包含 NFC装置功耗的终端设备一实施例的工作流程图。 本发明目的的实现、 功能特点及优点将结合实施例， 参照附图做进一 步说明。 具体实施方式
应当理解， 此处所描述的具体实施例仅仅用以解释本发明， 并不用于 限定本发明。
应当说明的是， 本发明中， NFC装置内置在终端设备中， 该终端设备 可以是手持式移动终端设备， 例如手机、 PDA或者其他进行移动支付的设 备等。 NFC装置设有主叫模块， 用以发起主叫请求， 与被叫方进行通信， 实现数据交互。
参见图 1 , 为本发明一实施例中降低 NFC装置功耗的方法流程图， 该 方法包括：
步驟 S10, 预设主叫模块处于休眠状态； 本发明中， 休眠状态是指， 主 叫模块处于省电模式， 不启动按固定频率发起主叫请求模式。
步驟 S20, 启用传感器，检测是否有外物处于所述主叫模块的工作范围 内； 终端设备中设有近距离传感器， 用以感应外物与终端设备的距离， 该 传感器可以是光感传感器， 也可以是激光传感器或者红外传感器。 例如， 手机中， 设有用以感应人脸的激光传感器或者光感传感器等。 本发明实施 例中， 通过控制终端设备中原有的传感器， 使其传输信号至 NFC装置， 从 而实现对 NFC装置主叫模块状态的控制。 具体的， 可通过控制电路， 使传 感器的输出脚与 NFC装置的主控芯片相连，输出信号至 NFC装置的主控芯 片， 然后由该主控芯片发出控制信号控制主叫模块。 主叫模块的工作范围 是指其可以与被呼叫方建立连接并进行数据交互的工作距离。 本发明实施 例中， 传感器可实时检测是否有外物靠近终端设备， 并判断其是否移动至 主叫模块的工作范围之内。
步驟 S30, 若是， 则控制传感器发出启动信号启动主叫模块进行工作。 传感器可以感知外物与终端设备的实际距离， 例如是 20cm还是 10cm, 如 果到达 10cm, 则说明有外物处于 NFC装置主叫模块的工作范围之内， 此 时， 控制传感器发出启动信号使其结束休眠状态。 该步驟流程与手机感应 人脸是否靠近， 然后根据感应结果是某部分处于工作状态或关闭状态的原 理一样。
本发明实施例中， 将 NFC装置的主叫模块设置为休眠状态， 并有效的 利用终端设备现有的传感器感应外物是否靠近终端设备并是否处于主叫模 块的工作范围，若是，则启动主叫模块工作，可以按需调节终端设备中 NFC 装置主叫模块的启动时间和频率， 从而避免了大部分时间 NFC装置都处在 无意义的工作中， 可以很好的控制终端设备的功耗， 延长终端设备的单次 充电的使用时间， 同时也可以节省部分终端设备的 CPU负荷。
上述实施例中， 传感器优选为光感传感器， 其根据遮光度实时检测是 否有外物处于主叫模块的工作范围内。 传感器也可以为激光传感器或者红 外传感器。 激光传感器或者红外传感器均可用来感应外物与本端设备的距 离， 实际应用中， 对其距离信号的处理过程与光感传感器大同小异， 在此 就不作详述。
进一步的， 参照图 2, 在前述实施例的基础上， 本发明另一实施例中， 上述方法在主叫模块进行工作之后还包括：
步驟 S40, 启用所述传感器， 检测外物是否离开主叫模块的工作范围； 步驟 S50, 若是， 则控制所述传感器通知主叫模块停止工作， 进入休眠 状态。
也就是说， 在主叫模块进行工作时， 仍对外物与终端设备的距离进行 检测。 当外物开始离开终端设备时， 光感传感器（或者其他传感器）检测 到物体开始远离终端设备并且判断是否已经超出了自己的检测距离； 如果 传感器检测模块检测到物体已经超出检测距离， 则该物体超出了主叫模块 的工作范围， 此时通知主叫模块停止固定频率的主叫请求的发送， 从而达 到进一步降低功耗的目的。
参照图 3 , 上述实施例中， 步驟 S30中， 主叫模块进行工作具体为： 步驟 S31 , 根据接收到的启动信号， 按预设频率发出主叫请求； 如果接 收到启动信号， 则表示有物体进入到工作范围， 此时发送主叫请求， 以与 外物建立连接关系。 该主叫请求的发送频率可根据工作环境进行灵活设置。
步驟 S32, 接收外物对主叫请求的反馈信息； 如果接收到反馈信息， 则 是可进行数据交互的、 与本方适配的对端设备， 可进行下一步驟； 如果无 反馈信息， 则说明物体不是与本端适配的对端设备， 此时可进入休眠状态。
步驟 S33 , 与外物建立连接并进行数据交互。 例如， 手机与外部设备建 立连接并进行支付。
本发明提供一种包含 NFC装置的终端设备， 可实现上述方法。 参照图 4, 在一实施例中， 该终端设备设有 NFC装置 100, 该 NFC装置 100设有 主叫模块 101 , 除 NFC装置 100外， 终端设备还包括：
状态设置模块 200, 用以预设主叫模块 101处于休眠状态；
传感器 300, 用于感应外物距离；
传感器控制模块 400, 用于启用传感器 300, 检测是否有外物处于所述 主叫模块 101的工作范围内；
若是， 则控制传感器 300发出启动信号启动主叫模块 101进行工作。 传感器 300是终端设备中原本设有的近距离传感器， 用以感应外物与 终端设备的距离。 传感器 300可以是光感传感器， 也可以是激光传感器或 者红外传感器。 传感器控制模块 400可以为一控制电路， 或者控制芯片， 或者加载于终端设备上的控制软件。 主叫模块 101 的工作范围是指其可以 与被呼叫方建立连接并进行数据交互的工作距离。 本发明实施例中， 传感 器 300可实时检测是否有外物靠近终端设备， 并判断其是否移动至主叫模 块 101的工作范围之内。
本发明实施例中， 将 NFC装置 100的主叫模块 101设置为休眠状态， 并有效的利用终端设备现有的传感器 300感应外物是否靠近终端设备并是 否处于主叫模块的工作范围， 若是， 则发出启动信号启动主叫模块 101 工 作， 可以按需调节终端设备中 NFC装置 100主叫模块 101的启动时间和频 率， 从而避免了大部分时间 NFC装置 100都处在无意义的工作中， 可以很 好地控制终端设备的功耗， 延长终端设备的单次充电的使用时间， 同时也 可以节省部分终端设备的 CPU负荷。
进一步的， 传感器控制模块 400还用于：
在主叫模块 101进行工作之后启用传感器 300,检测外物是否离开主叫 模块 101的工作范围；
若是， 则控制传感器 300通知主叫模块 101停止工作， 进入休眠状态。 也就是说， 在主叫模块 101进行工作时， 传感器控制模块 400仍控制 传感器 300对外物与终端设备的距离进行检测。 当外物开始离开终端设备 时， 传感器 300 (或者其他传感器 )检测到物体开始远离终端设备并且判断 是否已经超出了自己的检测距离， 如果传感器 300检测模块检测到物体已 经超出检测距离， 则该物体超出了主叫模块 101 的工作范围， 此时通知主 叫模块 101停止固定频率的主叫请求的发送， 从而达到进一步降低功耗的 目的。
上述主叫模块 101具体用于：
根据启动信号， 按预设频率发出主叫请求； 启动信号由传感器 300发 出， 如果主叫模块 10接收到启动信号， 则表示有物体进入到工作范围， 此 时主叫模块 10发送主叫请求， 以与外物建立连接关系。 该主叫请求的发送 频率可根据工作环境进行灵活设置。
接收外物对主叫请求的反馈信息； 如果接收到反馈信息， 则是可进行 数据交互的、 与本方适配的对端设备， 可与外物建立连接并进行数据交互； 如果无反馈信息， 则说明物体不是与本端适配的对端设备， 此时可进入休 眠状态。
本发明实施例中， 终端设备优选为移动通信终端， 例如手机、 个人数 字助理（PDA, Personal Digital Assistant )等。
参照图 5, 本发明实施例中， 包含 NFC装置的终端设备的工作流程如 下： 步驟 S201 , 开启传感器 300;
步驟 S202, 判断有无物体靠近； 以光感传感器为例， 通过遮光度来判 断如果有物体靠近后， 是否符合启动主叫模块的距离。 如果无， 则继续检 测， 主叫模块 101继续休眠。 如果有， 则进入步驟 S203;
步驟 S203 ,判断是否可以启动主叫模块；如果不可以，则返回步驟 S202; 如果可以， 则执行步驟 S204;
步驟 S204, 启动主叫模块 101 ; 例如传感器 300发出启动信号至主叫 模块 101 , 主叫模块 101停止休眠， 进入正常的工作模式， 并按照一定的频 率实时的向被叫方发起主叫请求。
步驟 S205 , 与外物进行数据交互；
步驟 S206, 传感器 300继续检测物体距离是否发生变化， 如果没有， 则不做任何操作； 如果不符合， 则进入步驟 S207 ,
步驟 S207, 判断是否可以休眠主叫模块； 如果是， 则进入步驟 S208, 如果否， 则返回步驟 S205;
步驟 S208 , 通知主叫模块 101停止工作， 进入休眠模式。
应当理解的是， 以上仅为本发明的优选实施例， 不能因此限制本发明 的专利范围， 凡是利用本发明说明书及附图内容所作的等效结构或等效流 程变换， 或直接或间接运用在其他相关的技术领域， 均同理包括在本发明 的专利保护范围内。

Claims

权利要求书
1、 一种降低 NFC装置功耗的方法， 所述 NFC装置置于终端设备中， 该终端设备包括用以感应外物距离的传感器， 其特征在于， 所述方法包括 以下步驟：
预设 NFC装置的主叫模块处于休眠状态；
启用所述传感器， 检测到有外物处于所述主叫模块的工作范围内时， 控制所述传感器发出启动信号启动所述主叫模块进行工作。
2、 根据权利要求 1所述的方法， 其特征在于， 所述传感器为光感传感 器， 用以根据遮光度实时检测是否有外物处于所述主叫模块的工作范围内。
3、 根据权利要求 1或 2所述的方法， 其特征在于， 在主叫模块进行工 作之后还包括：
启用所述传感器， 检测外物离开主叫模块的工作范围时， 控制所述传 感器通知主叫模块停止工作， 进入休眠状态。
4、 根据权利要求 3所述的方法， 其特征在于， 所述主叫模块进行工作 为：
根据传感器发出的所述启动信号， 按预设频率发出主叫请求； 接收外物对主叫请求的反馈信息；
与外物建立连接并进行数据交互。
5、 一种设有 NFC装置的终端设备， 所述 NFC装置置于终端设备中， 该终端设备包括用以感应外物距离的传感器， 其特征在于， 所述终端设备 还设有：
状态设置模块， 用以预设 NFC装置的主叫模块处于休眠状态； 传感器控制模块， 用于启用所述传感器， 检测到有外物处于所述主叫 模块的工作范围内时， 控制所述传感器发出启动信号启动主叫模块进行工
6、 根据权利要求 5所述的终端设备， 其特征在于， 所述传感器为光感 传感器， 用以根据遮光度实时检测是否有外物处于主叫模块的工作范围内。
7、 根据权利要求 5所述的终端设备， 其特征在于， 所述传感器为激光 传感器或红外传感器。
8、 根据权利要求 5至 7中任一项所述的终端设备， 其特征在于， 所述 传感器控制模块还用于：
在主叫模块进行工作之后启用所述传感器， 检测到外物离开主叫模块 的工作范围时， 控制所述传感器通知主叫模块停止工作， 进入休眠状态。
9、 根据权利要求 8所述的终端设备， 其特征在于， 所述主叫模块具体 用于：
根据传感器发出的所述启动信号， 按预设频率发出主叫请求； 接收外物对主叫请求的反馈信息；
与外物建立连接并进行数据交互。
10、 根据权利要求 9所述的终端设备， 其特征在于， 所述终端设备为 移动通信终端。
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