WO2009109075A1 - 一种用于校准射频sim卡通信距离的装置及方法 - Google Patents

一种用于校准射频sim卡通信距离的装置及方法 Download PDF

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Publication number
WO2009109075A1
WO2009109075A1 PCT/CN2008/001789 CN2008001789W WO2009109075A1 WO 2009109075 A1 WO2009109075 A1 WO 2009109075A1 CN 2008001789 W CN2008001789 W CN 2008001789W WO 2009109075 A1 WO2009109075 A1 WO 2009109075A1
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Prior art keywords
radio frequency
sim card
power
communication distance
calibration device
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PCT/CN2008/001789
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English (en)
French (fr)
Inventor
王仁发
余运波
朱杉
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深圳市中兴集成电路设计有限责任公司
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Publication of WO2009109075A1 publication Critical patent/WO2009109075A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/04Interfaces between hierarchically different network devices
    • H04W92/08Interfaces between hierarchically different network devices between user and terminal device

Definitions

  • This invention relates to record carriers for use with machines, and more particularly to record carriers with semiconductor circuit components, and more particularly to apparatus and methods for calibrating the communication distance of a radio frequency SIM card. Background technique
  • SIM Subscriber Identity Model
  • mobile phones ordinary mobile phones
  • the radio frequency SIM card involved in the present invention is a mobile phone card having these functions, and is a mobile phone smart card with radio frequency wireless communication function after modifying a normal mobile phone SIM card.
  • the mobile smart card not only has all the functions of the conventional SIM card, but also has an interface for short-distance two-way data communication with other external processing devices.
  • the mobile phone can have both functions such as Card functions such as credit card, micro payment card, time card, etc., and the information generated during the card process can be directly seen on the cardholder's mobile phone screen, and the cardholder needs to complete the various items through the mobile phone keyboard. operating.
  • Card functions such as credit card, micro payment card, time card, etc.
  • the radio frequency SIM (Subscriber Identity Model) card of the present invention comprises a card body and a circuit in the card body; the card body is provided with an interface that can be matched with the mobile phone card holder, and the card circuit includes a CPU, a memory, and a radio frequency transceiver circuit. , RF transceiver antenna, the entire circuit is connected to the corresponding end of the interface. In this way, the whole circuit can start to work by first obtaining power from the mobile phone. Next, under the control of the CPU, the entire circuit can communicate with the mobile phone to realize the standard functions of the conventional SIM, and can also pass the RF transceiver circuit and the RF transceiver antenna. Communicate with the supporting peripheral processing device within a short distance. The communication content and process are specifically processed by the CPU in the card. If necessary, the CPU sends a command to the mobile phone through the data line on the SIM card holder of the mobile phone and uses a standard protocol to control the screen display of the mobile phone. keyboard input.
  • the memory referred to herein may also be included in the CPU to make the CPU and the memory an integral part; the memory in the card circuit stores an IMSI (international Mobile Subscriber Identification Number), and may also store other applications.
  • IMSI international Mobile Subscriber Identification Number
  • the RF transceiver antenna is a loop antenna or a dipole antenna or a spiral antenna or a whip antenna;
  • the function of the mobile phone smart card in the mobile phone is running software
  • the APDU protocol communicates with the mobile phone to control and use the screen, keyboard and other resources of the mobile phone through the STK (SIM card Tool Kit) function of the mobile phone.
  • STK SIM card Tool Kit
  • the mobile phone B with poor signal shielding effect is far away from the card reader, and when the two mobile phones are close to the card reader at the same time (the mobile phone A is close to the card reader, the mobile phone B is far away from the card reader), at this time If the card reader is outside the card reading operation distance of the mobile phone A, and within the reading distance of the mobile phone B, the actual operation is that the mobile phone B is performing the card reading operation, and it is considered that the distance should be the distance.
  • the recent mobile phone A is contrary to the phenomenon of reading the card; another example is that, for the mobile phone B in the above example, since the card reading distance is relatively long, when it passes near the card reader but does not need to read the card operation, Produces the behavior of a card reading operation, which results in an erroneous card reading operation.
  • the radio frequency SIM card according to the present invention is a SIM card applied to a mobile terminal such as a mobile phone, which works in a radio frequency band or even a higher frequency band, and is capable of performing communication and payment functions, and is based on an existing mobile phone SIM card. On the other, additional functions such as wireless payment, access control and attendance have been added.
  • the technical problem to be solved by the present invention is to avoid the above-mentioned deficiencies of the prior art and to provide an apparatus and method for calibrating the short-range wireless communication distance of a radio frequency SIM card.
  • the invention utilizes a radio frequency power calibration device to compare the value of the radio frequency SIM card in the mobile terminal with the calibration value set in the radio frequency power calibrator, and if the detected value is inconsistent with the calibration value, The power calibration device sends an instruction to request the radio frequency SIM card to change the transmit power until the requirements are met.
  • the transmission power of the radio frequency SIM card in different mobile phones is adjusted to be different, but the power when reaching the card reader is the same or the power is the same when the surface of the mobile phone is the same, thus achieving the solution.
  • the purpose of the problem is to be different, but the power when reaching the card reader is the same or the power is the same when the surface of the mobile phone is the same, thus achieving the solution.
  • a radio frequency power calibration device for calibrating the communication distance of a radio frequency SIM card, including a microcontroller MCU, a radio frequency transmitting and receiving modem, a radio frequency power detecting module, and an analog to digital conversion And RF antennas.
  • the RF antenna of the microcontroller is electrically connected to the RF power detection module and the RF transmitting and receiving modem respectively; the RF power detection module is electrically connected to the analog-to-digital converter; the analog-to-digital converter and the corresponding port of the microcontroller MCU are The bus is electrically connected; the RF transmitting and receiving modem and the corresponding port of the microcontroller MCU are electrically connected through the bus.
  • the instruction of the microcontroller MCU is modulated by the radio frequency transmitting and receiving modem into a radio frequency signal and then transmitted through the radio frequency antenna; the radio frequency power detecting module converts the radio frequency signal received from the radio frequency antenna into an analog voltage signal; the analog to digital converter The analog signal is converted into a digital signal and transmitted to the microcontroller MCU for comparison processing, and the relevant command is sent according to the comparison result to control the radio frequency SIM card to increase or decrease the transmission power to achieve the communication distance of the calibration SIM card.
  • the RF power calibration device has the same operating frequency as the RF SIM card.
  • the radio frequency power calibration device has the same communication protocol as the radio frequency SIM card device, and is capable of data exchange with each other.
  • the microcontroller MCU converts the command data through a radio frequency transmitting and receiving modem and transmits it to the radio frequency antenna.
  • the RF power detection module is configured to detect a power intensity of an external RF signal and convert it into an analog voltage signal; the analog to digital converter converts the analog voltage signal into a digital signal; the microcontroller MCU will Digital signals are processed.
  • the present invention solves the technical problem described above, and can further implement the following technical solutions, and a calibration
  • the method for communicating the distance of the radio frequency SIM card is based on creating a radio frequency power calibration device for calibrating the communication distance of the radio frequency SIM card, and the method includes the following steps in sequence:
  • the RF power calibration device sends an instruction to the RF SIM card, and the RF SIM card receives the command of the power calibration device, and continuously transmits power;
  • the RF power calibration device detects the power transmitted by the RF SIM card and performs correlation calculation to convert into a voltage value.
  • step B if the judgment result is "Yes", that is, the operation result is greater than or equal to the set value, it is further determined whether the operation result is greater than or equal to the calibration value, and if it is determined that the calculation result is greater than the calibration value, the RF power calibrator Sending an instruction to the radio frequency SIM card, reducing the radio frequency SIM card transmission power, and returning to step D;
  • step F if it is determined that the calculation result is equal to the calibration value, it indicates that the radio frequency SIM card satisfies the power transmission requirement, and the process of calibrating the short-range wireless communication distance of the radio frequency SIM card is completed.
  • the method works in the SHF band, the VHF band or the UHF ultra-high band.
  • the calibration value in the RF power calibration device described in step A can be changed.
  • FIG. 1 is a working principle diagram of a method for calibrating a communication distance of a radio frequency SIM card according to the present invention
  • 2 is an internal logic block diagram of a radio frequency power calibration apparatus
  • 3 is a flow chart showing the operation of the method for calibrating the communication distance of the radio frequency SIM card of the present invention. detailed description
  • the apparatus includes a microcontroller MCU 200, a radio frequency transmitting and receiving modem 201, and a radio frequency power detecting module 202, which is a radio frequency power calibration apparatus 100 for calibrating a radio frequency SIM card 104.
  • Analog to digital converter 203 and radio frequency antenna 204 As shown in FIG. 2 , the apparatus includes a microcontroller MCU 200, a radio frequency transmitting and receiving modem 201, and a radio frequency power detecting module 202, which is a radio frequency power calibration apparatus 100 for calibrating a radio frequency SIM card 104. Analog to digital converter 203 and radio frequency antenna 204. As shown in FIG.
  • the microcontroller radio frequency antenna 204 is electrically connected to the radio frequency power detecting module 202 and the radio frequency transmitting and receiving modem 201, respectively; the radio frequency power detecting module 202 is electrically connected to the analog to digital converter 203; The digital converter 203 is electrically connected to the corresponding port of the microcontroller MCU 200 via a bus; the corresponding port of the RF transmitting and receiving modem 201 and the microcontroller MCU 200 is electrically connected through the bus.
  • the instruction of the microcontroller MCU 200 is modulated into a radio frequency signal by the radio frequency transmitting and receiving modem 201 and then transmitted through the radio frequency antenna 204.
  • the radio frequency power detecting module 2 G2 converts the radio frequency signal received from the radio frequency antenna 201 into an analog voltage signal.
  • the analog-to-digital converter 203 converts the analog signal into a digital signal and transmits it to the microcontroller MCU 200 for comparison processing, and sends a relevant command according to the comparison result to control the radio frequency SIM card 104 to increase or decrease the transmission power to implement calibration of the SIM card. Communication distance.
  • the RF power calibration device 100 has the same operating frequency as the RF SIM card 104.
  • the RF power calibration device 100 and the RF SIM card 104 device have the same communication protocol and are capable of data exchange with each other.
  • the microcontroller MCU 200 converts the command data through the RF transmitting and receiving modem 201 and transmits it to the RF antenna 204.
  • the RF power detecting module 202 is configured to detect the power intensity of the external RF signal. Converting it to an analog voltage signal; the analog to digital converter 203 converts the analog voltage signal into a digital signal; the microcontroller MCU 200 processes the digital signal.
  • the working principle diagram of the radio frequency power calibration apparatus 100 when controlling the transmission power of the radio frequency SIM card 104 can refer to FIG. 1.
  • the radio frequency power detection module 202 in the radio frequency power calibration apparatus 100 detects the power transmitted from the radio frequency SIM card 104, and then performs correlation. Processing, and transmitting the relevant operation instruction to the radio frequency SIM card 104 through the microcontroller MCU 200, to implement the transmission power control of the radio frequency SIM card 104.
  • the technical solution may further provide a method for calibrating the short-range wireless communication distance of the radio frequency SIM card 104, based on creating a communication distance of the calibration radio frequency IM card 104.
  • the RF power calibration apparatus 100 comprising the following steps, as shown in FIG. 3:
  • the mobile terminal 102 with the built-in RF SIM card 104 is placed in an assumed position in the sensing area of the RF power calibration apparatus 100;
  • the radio frequency power calibration apparatus 100 sends an instruction to the radio frequency SIM card 104, and the radio frequency SIM card 104 receives the instruction of the power calibration apparatus 100 to continuously transmit power.
  • the radio frequency power calibration apparatus 100 detects the power transmitted by the radio frequency SIM card 104, and performs correlation calculation to convert into a voltage value, and performs the next step;
  • step 304 of FIG. 3 it is determined whether the operation result in the radio frequency power calibration apparatus 100 is greater than or equal to the calibration value described in step A. If the determination result is "NO", the operation result is less than the calibration value, and the radio frequency power is The calibrator 100 sends an instruction to the radio frequency SIM card 104 to increase the transmit power of the radio frequency SIM card 104 and returns to step D.
  • step E if the determination result is "Yes", that is, the operation result is greater than or equal to the set value, it is further determined whether the operation result is greater than or equal to the calibration value, and if it is determined as the operation result Greater than the calibration value, the RF power calibrator 100 sends an instruction to the radio frequency SIM card 104, reducing the radio frequency SIM card 104 transmit power, and returns to step D;
  • step F if the determination is "NO”, the operation result is equal to the calibration value, indicating that the radio frequency SIM card 104 satisfies the power transmission requirement, and the short-range wireless communication distance of the radio frequency SIM card 104 is completed. process.
  • the method works in the SHF band, the VHF band or the UHF ultra-high band.
  • the method is to calibrate the short-range wireless communication distance of the radio frequency SIM card 104, and the different mobile terminals 102 with the built-in radio frequency SIM card 104 must be placed in the same assumed position in the sensing area described in step B, by the present invention.
  • the method for calibrating the short-range wireless communication distance of the radio frequency SIM card 104 is such that when the radio frequency SIM card 104 in different mobile phones is at the same distance from the sensing area of the card reader, the power when reaching the card reader is the same or The power on the surface of the phone is the same, so that different phones maintain the same card reading distance.
  • the calibration value in the RF power calibration device 100 described in step A can be changed.

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  • Computer Networks & Wireless Communication (AREA)
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Description

一种用于校准射频 SIM卡通信距离的椠置及方法
技术领域
本发明涉及连同机器一起使用的记录载体,特别涉及带有半导体电路元件的记录 载体, 尤其涉及校准射频 SIM卡通信距离的装置及方法。 背景技术
随着技术发展, 可以通过多种方法在普通移动电话(以下简称 "手机")内的 SIM ( Subscriber Identity Model) 卡卡体内增加各种智能电路模块, 使之除了有基本的 SIM卡功能外, 还有其它更加贴近于生活的功能。 通过改造手机 SIM卡使之成为具备 支付功能的手机 SIM卡, 也可以让手机兼有各种诸如***、 小额支付、 考勤之类的 功能。 本发明所涉及的射频 SIM卡就是具备这些功能的手机卡, 它是一种经改造普通 手机 SIM卡后使之带射频无线通信功能的手机智能卡。该手机智能卡不仅具备常规 SIM 卡的所有功能, 还加有一个与外部其它处理装置进行短距离双向数据通信的接口, 利 用该接口及智能卡的原有数据处理及存储功能, 可让手机兼有诸如***, 小额支付 卡、 考勤卡等之类的卡功能, 而且其用卡过程中产生的信息能直接在持卡人的手机屏 幕上看到, 且需要持卡人通过手机键盘来完成各项操作。
本发明所涉及的射频 SIM ( Subscriber Identity Model ) 卡, 包括卡体以及卡体 内的电路; 卡体上设有可与手机卡座匹配使用的接口, 卡内电路包括有 CPU、 存储器、 射频收发电路、 射频收发天线, 整个电路与所述接口的相应端点连接。 这样, 整个电 路首先能通过手机得到电源而开始工作, 接下来, 在 CPU的控制下, 整个电路即能与 手机通信以实现常规 SIM的标准功能, 同时也能通过射频收发电路和射频收发天线在 短距离内与配套的***处理装置通信, 通信内容和过程由卡内的 CPU具体处理, 必要 时 CPU通过手机的 SIM卡座上的数据线并用标准协议向手机发指令去控制手机的屏幕 显示和键盘输入。
这里所说的存储器,也可以包含在 CPU之中,使 CPU和存储器成为一块整体部件; 所述卡内电路中的存储器存储有 IMSI(international Mobile Subscriber Identification Number),也可以存储有实现其它应用所需的信息,从而使其具备基本的 SIM卡功能, 还能够兼作其它的功能卡; 所述的射频收发天线为环行天线或偶极子天线或螺旋天线 或鞭状天线; 所述的带射频无线通信功能的手机智能卡内的 CPU所运行的软件是利用 APDU协议与手机通信, 从而通过手机的 STK ( SIM card Tool Kit ) 功能来控制和使用 手机的屏幕、 键盘及其它资源。
然而, 随着手机等移动通信终端逐渐成为具备电子钱包、 手机门禁通行等消费功 能的移动支付工具, 在现实生活中, 对手机等移动终端读卡搡作距离的控制也提出了 更加高的要求, 为了避免误读卡操作和错读卡操作, 必须对手机等移动终端读卡操作 时距离读卡器的距离进行限制, 只有在一定的距离时, 读卡操作才能进行。
上述的这些应用场合都属于近距离通信, 而对于手机这样的移动终端, 由于其外 壳所用的结构、 材料的不同, 会导致对信号的屏蔽效果不相同, 特别是对射频或更高 频率的信号尤为明显。 这样, 对于相同的读卡器或其他装置, 不同的移动终端例如手 机, 其通信的距离就会远近不一, 从而可能引起错误的读卡操作, 例如对信号屏蔽效 果好的手机 A读卡距离较近, 而对信号屏蔽效果差的手机 B 读卡距离较远, 而当两 手机同时靠近读卡器时 (手机 A离读卡器距离近, 手机 B离读卡器距离远), 此时, 如果读卡器在手机 A的读卡操作距离之外, 而在手机 B的读卡搡作距离之内, 这样实 际是手机 B在进行读卡搡作, 与人们的常识认为即应该是距离近的手机 A在读卡搡作 这一现象相违背; 另外一个例子是, 对于上述例子中的手机 B, 由于其读卡距离比较 远, 当其在读卡器附近经过但不需要读卡操作时也产生读卡操作的行为, 这样导致错 误的读卡操作。
目前的射频 SIM卡产品中, 对不同的手机其通信距离有很大的差距, 屏蔽效果差 的手机, 与读卡器的通信距离可达 1米左右, 而对于屏蔽效果好的手机, 即使手机与 读卡器相互贴近也不能通信。
本发明所涉及的射频 SIM卡, 是一种应用于移动终端如手机中的 SIM卡, 其工作 于射频甚至更高的频段,能够执行通信和支付功能,是在现有的手机 SIM卡的基础上, 增加了无线支付、 门禁考勤等其他功能。
基于上述, 对读卡器与内置于移动终端的射频 SIM卡的通信距离进行校准使其对 不同的移动终端保持相同的读卡搡作距离显得相当重要。
上面所述的读卡方法存在以下不足:
1、 对于相同的读卡器或其他装置, 不同的移动终端如手机与其通信距离就会远 近不一, 从而可能引起错误的读卡搡作;
2、 由于不同的手机终端屏蔽效果不同, 从而影响手机卡与读卡器的搡作。 发明内容
本发明要解决的技术问题在于避免上述现有技术的不足之处而提出一种校准射 频 SIM卡近距离无线通信距离的装置及方法。
本发明就是利用一种射频功率校准装置, 通过检测移动终端***频 SIM卡的发射 功率值, 把该值与射频功率校准器内设置好的校准值比较, 如果检测到的值与校准值 不一致,功率校准装置则发送指令要求射频 SIM卡改变发射功率,直到满足要求为止。
通过这样一个校准, 把不同手机内的射频 SIM卡的发射功率调整成不一样, 但是 其到达读卡器时的功率是一样的或者说在手机表面时的功率是一样的, 这样就达到了 解决问题的目的。
本发明解决所述技术问题可以通过采用以下技术方案来实现: 一种校准射频 SIM 卡通信距离的射频功率校准装置, 包括微控制器 MCU、 射频发射及接收调制解调 器、 射频功率检测模块、 模数转换器和射频天线。
所述微控制器射频天线分别与射频功率检测模块和射频发射及接收调制解调器作 电连接; 所述射频功率检测模块与模数转换器作电连接; 模数转换器与微控制器 MCU 相应端口通过总线作电连接;射频发射及接收调制解调器与微控制器 MCU 对应端口通 过总线作相应电连接。
所述微控制器 MCU 的指令通过射频发射及接收调制解调器调制成射频信号后通 过射频天线发射出去; 所述射频功率检测模块将从射频天线接收的射频信号转换成模 拟电压信号;模数转换器把该模拟信号转换成数字信号并传递给微控制器 MCU 进行比 较处理, 根据比较结果发送相关指令控制射频 SIM卡增大或减少发射功率从而实现校 准通 SIM卡的通信距离。
所述射频功率校准装置与射频 SIM卡的工作频率相同。
所述射频功率校准装置与射频 SIM 卡装置具有相同的通信协议, 相互之间能够 进行数据交换。
所述微控制器 MCU 把指令数据通过射频发射及接收调制解调器转换后交由射频 天线发射。
所述射频功率检测模块用于检测外部的射频信号的功率强度并把其转换为模拟 电压信号; 所述模数转换器将所述模拟电压信号转换成数字信号; 微控制器 MCU将所 述的数字信号进行进行处理。
本发明解决所述的技术问题, 还可以进一步采用以下技术方案来实现, 一种校准 射频 SIM卡通信距离的方法, 基于创建一种校准射频 SIM 卡通信距离的射频功率校 准装置, 所述方法依次包括以下步骤:
A、 在射频功率校准装置内设定一个用于比较的校准值;
B、将内置了射频 SIM卡的移动终端放置于射频功率校准装置的感应区内的假定位 置;
C、 射频功率校准装置发送指令给射频 SIM卡, 射频 SIM卡接收所述功率校准装 置的指令, 连续发射功率;
D、射频功率校准装置检测射频 SIM卡发射的功率,并进行相关运算转换成电压值; B、 判断射频功率校准装置将步骤 D中的运算结果是否大于或等于步骤 A中所述的 校准值, 若判断结果为 "否", 即运算结果小于校准值, 射频功率校准器向射 频 SIM卡发送指令, 增加射频 SIM卡发射功率, 并返回到执行步骤 D。
F、 上述步骤 B 中, 若判断结果为 "是", 即运算结果大于或等于设定值, 则进一 步判断运算结果是大于还是等于校准值, 若判断为运算结果大于校准值, 射频 功率校准器向射频 SIM卡发送指令, 减少射频 SIM卡发射功率, 并返回执行 步骤 D;
G、步骤 F中,若判断为运算结果等于校准值,说明射频 SIM卡满足功率发射要求, 完成校准射频 SIM卡近距离无线通信距离过程。
所述方法工作在 SHF频段、 VHF频段或 UHF超高频段。
所述方法在控制不同的射频 SIM卡的发射功率时,使之与射频功率校准装置的校 准值一致时,必须将内置了射频 SIM卡的不同的移动终端放置在步骤 B所述的感应区 内的相同的假定位置。
步骤 A所述射频功率校准装置内的校准值可以更改。
同现有技术相比较, 本发明釆用的上述技术方案的有益效果在于:
1、 通过控制射频 SIM卡的发射功率,可以消除由于移动终端对射频 SIM卡的信 号屏蔽差异造成的影响;
2、 通过控制射频 SIM卡的发射功率, 使不同的移动终端具有相同的读卡距离。 附图说明
图 1是本发明所述校准射频 SIM卡通信距离的方法的工作原理图;
图 2是射频功率校准装置内部逻辑框图; 图 3是本发明之校准射频 SIM卡通信距离的方法的工作流程图。 具体实施方式
以下结合各附图所示之最佳实施例作进一步详述。
本发明之一种校准射频 SIM 卡 104 近距离无线通信距离的射频功率校准装置 100, 如图 2所示, 该装置包括微控制器 MCU 200、 射频发射及接收调制解调器 201、 射频功率检测模块 202、 模数转换器 203和射频天线 204。 如图 2所示,所述微控制器射频天线 204分别与射频功率检测模块 202和射频发 射及接收调制解调器 201作电连接; 所述射频功率检测模块 202与模数转换器 203作 电连接; 模数转换器 203与微控制器 MCU 200相应端口通过总线作电连接; 射频发射 及接收调制解调器 201与微控制器 MCU 200对应端口通过总线作相应电连接。
所述微控制器 MCU 200的指令通过射频发射及接收调制解调器 201调制成射频信 号后通过射频天线 204发射出去; 所述射频功率检测模块 2 G2将从射频天线 201接收 的射频信号转换成模拟电压信号; 模数转换器 203把该模拟信号转换成数字信号并传 递给微控制器 MCU 200进行比较处理,根据比较结果发送相关指令控制射频 S IM卡 104 增大或减少发射功率从而实现校准 SIM卡的通信距离。
如图 2所示, 所述射频功率校准装置 100与射频 SIM卡 104的工作频率相同。 所述射频功率校准装置 100与射频 SIM卡 104装置具有相同的通信协议, 相互 之间能够进行数据交换。
如图 2所示, 所述微控制器 MCU 200把指令数据通过射频发射及接收调制解调器 201转换后交由射频天线 204发射; 所述射频功率检测模块 202用于检测外部的射频 信号的功率强度并把其转换为模拟电压信号; 所述模数转换器 203将所述模拟电压信 号转换成数字信号; 微控制器 MCU 200将所述的数字信号进行进行处理。
射频功率校准装置 100在控制射频 SIM卡 104的发射功率时的工作原理图可以 参照图 1 , 射频功率校准装置 100内的射频功率检测模块 202检测从射频 SIM卡 104 发过来的功率, 然后进行相关处理, 并通过微控制器 MCU 200将相关操作指令发送给 射频 SIM卡 104 , 进行实现对射频 SIM卡 104的发射功率控制。
为了解决本发明所提出的技术问题, 其技术方案还可以是, 提供一种校准射频 S IM卡 104近距离无线通信距离的方法, 基于创建一种校准射频 S IM卡 104通信距离 的射频功率校准装置 100, 所述方法包括以下步骤, 如图 3所示:
A、 在射频功率校准装置 100内设定一个用于比较的校准值;
B、将内置了射频 SIM卡 104的移动终端 102放置于射频功率校准装置 100的感应 区内的假定位置;
C、 如图 3步骤 301和步骤 302所示, 射频功率校准装置 100发送指令给射频 SIM 卡 104 , 射频 SIM卡 104接收所述功率校准装置 100的指令, 连续发射功率;
D、如图 3步骤 303所示,射频功率校准装置 100检测射频 SIM卡 104发射的功率, 并进行相关运算转换成电压值, 执行下一步骤;
E、 如图 3步骤 304所示, 判断射频功率校准装置 100中的运算结果是否大于或等 于步驟 A 中所述的校准值, 若判断结果为 "否", 即运算结果小于校准值, 射 频功率校准器 100向射频 SIM 卡 104发送指令, 增加射频 SIM 卡 104发射功 率, 并返回到执行步骤 D。
F、 如图 3步骤 305所示, 上述步骤 E中, 若判断结果为 "是", 即运算结果大于 或等于设定值, 则进一步判断运算结果是大于还是等于校准值, 若判断为运算 结果大于校准值, 射频功率校准器 100 向射频 SIM 卡 104发送指令, 减少射 频 SIM 卡 104发射功率, 并返回执行步骤 D;
G、 如图 3步骤 305所示, 步骤 F中, 若判断为 "否," 则说明运算结果等于校准 值, 说明射频 SIM卡 104满足功率发射要求, 完成校准射频 SIM卡 104近距 离无线通信距离过程。
所述方法工作在 SHF频段、 VHF频段或 UHF超高频段。
所述方法在校准射频 SIM卡 104的近距离无线通信距离,必须将内置了射频 SIM 卡 104的不同的移动终端 102放置在步骤 B所述的感应区内的相同的假定位置, 通过 本发明所述的校准射频 SIM卡 104近距离无线通信距离的方法,使不同手机内的射频 SIM卡 104在距离读卡器感应区内的相同距离时, 到达读卡器时的功率是一样的或者 说在手机表面时的功率是一样的, 从而使不同的手机保持相同的读卡搡作距离。
步骤 A所述射频功率校准装置 100内的校准值可以更改。

Claims

权 利 要 求 、 一种用于校准射频 SIM卡(104)通信距离的射频功率校准装置(100), 其特征在 于, 包括微控制器 MCU (200)、 射频发射及接收调制解调器(201)、 射频功率检测 模块( 202 )、 模数转换器( 203 )和射频天线 ( 204 )。
所述射频天线 ( 204 )分别与射频功率检测模块( 202 ) 和射频发射及接收调 制解调器(201)作电连接; 所述功率检测模块( 202 ) 与模数转换器( 203 )作电 连接; 模数转换器( 203 ) 与微控制器 MCU (200)相应端口通过总线作电连接; 射 频发射及接收调制解调器(201) 与微控制器 MCU (200)对应端口通过总线作相应 电连接。
所述微控制器 MCU (200)的指令通过射频发射及接收调制解调器 (201)调制 成射频信号后通过射频天线 ( 204 )发射出去; 所述射频功率检测模块( 202 )将 从射频天线 (201 ) 接收的射频信号转换成模拟电压信号; 模数转换器 ( 203 )把 该模拟信号转换成数字信号并传递给微控制器 MCU (200)进行比较处理, 根据比较 结果发送相关指令控制射频 SIM卡(104)增大或减少发射功率从而实现校准 SIM 卡的通信距离。
、 如权利要求 1 所述的用于校准射频 SIM 卡(104)通信距离的射频功率校准装置 (100), 其特征在于:
所述射频功率校准装置(100) 与射频 SIM卡(104) 的工作频率相同。
、 如权利要求 1 所述的用于校准射频 SIM 卡(104)通信距离的射频功率校准装置
(100), 其特征在于:
所述射频功率校准装置(100) 与射频 SIM卡(104)装置具有相同的通信 协议, 相互之间能够进行数据交换。
、 如杈利要求 1 所述的用于校准射频 SIM 卡(104)通信距离的射频功率校准装置
(100), 其特征在于:
所述微控制器 MCU ( 200 )把指令数据通过射频发射及接收调制解调器 Ol) 调后交由射频天线 ( 204 )发射。
、 如权利要求 1 所述的用于校准射频 SIM 卡(104)通信距离的射频功率校准装置
(100), 其特征在于:
所述射频功率检测模块( 202 )用于检测外部的射频信号的功率强度并把其转 换为模拟电压信号; 所述模数转换器( 203 )将所述模拟电压信号转换成数字信号; 微控制器 MCU ( 200 ) 将所述的数字信号进行处理。
、 一种用于校准射频 SIM 卡(104) 通信距离的方法, 基于创建一种校准射频 SIM 卡(104)通信距离的射频功率校准装置(100), 其特征在于, 所述方法包括步骤:
A、 在射频功率校准装置(100) 内设定一个用于比较的校准值;
B、将内置了射频 SIM卡( 104 )的移动终端( 102 )放置于射频功率校准装置( 100 ) 的感应区内的假定位置;
C、 射频功率校准装置(100)发送指令给射频 SIM卡(104), 射频 SIM卡(104) 接收所述功率校准装置 (100) 的指令, 连续发射功率;
D、 射频功率校准装置(100)检测射频 SIM卡(104)发射的功率, 并进行相关运 算转换成电压值, 执行下一步骤;
E、 判断射频功率校准装置(100) 中的运算结果是否大于或等于步骤 A 中所述的 校准值, 若判断结果为 "否", 即运算结果小于校准值, 射频功率校准器(100) 向射频 SIM卡 (104)发送指令, 增加射频 SIM 卡(104)发射功率, 并返回 到执行步骤 D。
F、 上述步驟 E 中, 若判断结果为 "是", 即运算结果大于或等于设定值, 则进一 步判断运算结果是大于还是等于校准值, 若判断为运算结果大于校准值, 射频 功率校准器(100) 向射频 SIM卡(104)发送指令, 减少射频 SIM卡(104) 发射功率, 并返回执行步骤 D;
G、 步骤 F中, 若判断为运算结果等于校准值, 说明射频 SIM卡(104) 满足功率 发射要求, 完成校准射频 SIM卡(104)近距离无线通信距离过程。
、 如权利要求 6所述的用于校准射频 SIM卡(104)通信距离的方法, 其特征在于: 所述方法工作在 SHF频段、 VHF频段或 UHF超高频段。
、 如杈利要求 6所述的用于校准射频 SIM卡(104)通信距离的方法, 其特征在于: 所述方法在控制不同的射频 SIM 卡(104)的发射功率时, 使之与射频功率校 准装置(100) 的校准值一致时, 必须将内置了射频 SIM卡(104) 的不同的移动 终端(102)放置在步骤 B所述的感应区内的相同的假定位置。
、 如权利要求 6所述的用于校准射频 SIM卡(104) 通信距离的方法, 其特征在于: 步骤 A所述射频功率校准装置(100) 内的校准值可以更改。
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