CN201749478U - A radio frequency card reader device communicating in the 2.4G frequency band - Google Patents
A radio frequency card reader device communicating in the 2.4G frequency band Download PDFInfo
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Abstract
Description
技术领域technical field
本实用新型涉及一种在2.4G频段通信的射频读卡设备。The utility model relates to a radio frequency card reading device for communication in the 2.4G frequency band.
背景技术Background technique
随着经济的快速发展，越来越多的科技创新产品普及到人们的日常生活和工作中，其中物联网技术和移动通信技术的日益完善的结合，比如在2.4GHz频段通信的射频读卡设备，给人们展示了一种新的生活应用，极大方便了人们的生活。With the rapid development of the economy, more and more scientific and technological innovation products are popularized in people's daily life and work, among which the increasingly perfect combination of Internet of Things technology and mobile communication technology, such as radio frequency card reader devices that communicate in the 2.4GHz frequency band , showing people a new life application, which greatly facilitates people's life.
现有的在2.4GHz频段通信的射频读卡设备，比如售货机、售饭机或POS机，它们的感应区域很广，可以适合中远距离的信号传输，但由于感应区域很广，会造成误刷卡、误感应，所以要在射频读卡设备里安装一个屏蔽电路，对射频读卡设备的感应信号进行限定，但安装屏蔽电路会屏蔽信号的强度，造成射频读卡设备工作不稳定。Existing radio frequency card reader devices that communicate in the 2.4GHz frequency band, such as vending machines, rice vending machines, or POS machines, have a wide sensing area and are suitable for medium and long-distance signal transmission. However, due to the wide sensing area, it will cause errors. Card swiping and false induction, so a shielding circuit should be installed in the radio frequency card reader device to limit the induction signal of the radio frequency card reader device, but installing a shielding circuit will shield the signal strength, resulting in unstable operation of the radio frequency card reader device.
实用新型内容Utility model content
本实用新型提供了一种在2.4G频段通信的射频读卡设备，其工作稳定。The utility model provides a radio frequency card reading device for communication in the 2.4G frequency band, which works stably.
本实用新型的技术方案是：The technical scheme of the utility model is:
一种在2.4G频段通信的射频读卡设备，包括采用在2.4GHz频段无线通信的第一信号收发器、第一天线、控制器、距离检查芯片和信号接收模块；A radio frequency card reading device for communication in the 2.4GHz frequency band, including a first signal transceiver using wireless communication in the 2.4GHz frequency band, a first antenna, a controller, a distance checking chip and a signal receiving module;
所述第一信号收发器的一端与第一天线连接，另一端依次通过控制器、距离检查芯片、功分器与信号接收模块连接；One end of the first signal transceiver is connected to the first antenna, and the other end is sequentially connected to the signal receiving module through the controller, the distance checking chip, and the power splitter;
控制器通过第一信号收发器和第一天线发射激活信号，安装在移动终端里的在2.4GHz频段通信的智能卡收到该激活信号时，向第一信号收发器发送反馈信号，第一信号收发器将该反馈信号发送给控制器，控制器在接收到该反馈信号时向距离检查芯片发送启动信号，距离检查芯片根据该启动信号启动信号接收模块接收智能卡发射的侦测信号，信号接收模块将该接收到的侦测信号发给距离检查芯片，距离检查芯片在该侦测信号的强度达到预定阀值时向控制器发送数据传输信号，控制器根据该数据传输信号通过第一信号收发器和第一天线与智能卡进行数据传输。The controller transmits an activation signal through the first signal transceiver and the first antenna. When the smart card installed in the mobile terminal and communicating in the 2.4GHz frequency band receives the activation signal, it sends a feedback signal to the first signal transceiver, and the first signal is transmitted and received. The controller sends the feedback signal to the controller, and the controller sends a starting signal to the distance checking chip when receiving the feedback signal, and the distance checking chip starts the signal receiving module to receive the detection signal emitted by the smart card according to the starting signal, and the signal receiving module will The received detection signal is sent to the distance inspection chip, and the distance inspection chip sends a data transmission signal to the controller when the strength of the detection signal reaches a predetermined threshold, and the controller passes the first signal transceiver and the first signal transceiver according to the data transmission signal. The first antenna performs data transmission with the smart card.
本实用新型通过距离检查芯片检测智能卡发射的侦测信号的强度，在侦测信号的强度达到预定阀值时，控制器才开始通过第一信号收发器和第一天线与智能卡进行数据传输，即可以根据实际感应距离来设定预定阀值，不会减弱第一信号收发器发送的数据信号强度，保证了控制器和智能卡的数据传输稳定性。The utility model detects the strength of the detection signal emitted by the smart card through the distance inspection chip. When the strength of the detection signal reaches a predetermined threshold, the controller starts to transmit data with the smart card through the first signal transceiver and the first antenna, that is The predetermined threshold can be set according to the actual sensing distance, and the strength of the data signal sent by the first signal transceiver will not be weakened, thereby ensuring the stability of data transmission between the controller and the smart card.
附图说明Description of drawings
图1是本实用新型射频读卡设备在一实施例中的结构原理图；Fig. 1 is the structural schematic diagram of the utility model radio frequency card reading equipment in an embodiment;
图2是本实用新型射频读卡设备在另一实施例中的结构原理图；Fig. 2 is the structural principle diagram of the utility model radio frequency card reading device in another embodiment;
图3是本实用新型射频读卡设备在又一实施例中的结构原理图。Fig. 3 is a structural principle diagram of another embodiment of the radio frequency card reading device of the present invention.
具体实施方式Detailed ways
下面结合附图对本实用新型的具体实施例做一详细的阐述。Specific embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings.
本实用新型的在2.4G频段通信的射频读卡设备，如图1，包括采用在2.4GHz频段无线通信的第一信号收发器(该第一信号收发器是在2.4GHz频段进行通信的RF通信芯片)、第一天线、控制器、距离检查芯片和信号接收模块；The radio frequency card reader device of the present utility model communicating in the 2.4G frequency band, as shown in Figure 1, includes the first signal transceiver that adopts wireless communication in the 2.4GHz frequency band (the first signal transceiver is an RF communication device that communicates in the 2.4GHz frequency band) chip), a first antenna, a controller, a distance checking chip and a signal receiving module;
所述第一信号收发器的一端与第一天线连接，另一端依次通过控制器、距离检查芯片、功分器与信号接收模块连接；One end of the first signal transceiver is connected to the first antenna, and the other end is sequentially connected to the signal receiving module through the controller, the distance checking chip, and the power splitter;
控制器通过第一信号收发器和第一天线发射激活信号，安装在移动终端里的在2.4GHz频段通信的智能卡(移动终端对智能卡进行供电，保证智能卡能够工作)收到该激活信号时，向第一信号收发器发送反馈信号，第一信号收发器将该反馈信号发送给控制器，控制器在接收到该反馈信号时向距离检查芯片发送启动信号，距离检查芯片根据该启动信号启动信号接收模块接收智能卡发射的侦测信号(智能卡会不断或不定时的发射侦测信号)，信号接收模块将该接收到的侦测信号发给距离检查芯片，距离检查芯片在该侦测信号的强度达到预定阀值(该预定阀值可以根据具体的感应距离进行设定，保证射频读卡设备不会误刷、误感应)时向控制器发送数据传输信号，控制器根据该数据传输信号通过第一信号收发器和第一天线与智能卡进行数据传输。The controller transmits an activation signal through the first signal transceiver and the first antenna, and when the smart card installed in the mobile terminal communicates in the 2.4GHz frequency band (the mobile terminal supplies power to the smart card to ensure that the smart card can work), when receiving the activation signal, send The first signal transceiver sends a feedback signal, and the first signal transceiver sends the feedback signal to the controller. When the controller receives the feedback signal, the controller sends a starting signal to the distance checking chip, and the distance checking chip starts receiving the signal according to the starting signal. The module receives the detection signal emitted by the smart card (the smart card will continuously or irregularly transmit the detection signal), and the signal receiving module sends the received detection signal to the distance check chip. When the predetermined threshold value (the predetermined threshold value can be set according to the specific sensing distance to ensure that the RF card reader device will not be swiped or sensed by mistake) sends a data transmission signal to the controller, and the controller passes the first signal according to the data transmission signal. The signal transceiver and the first antenna perform data transmission with the smart card.
由此可见，本实用新型是通过距离检查芯片检测智能卡发射的侦测信号的强度，在侦测信号的强度达到预定阀值时，控制器才开始通过第一信号收发器和第一天线与智能卡进行数据传输，即可以根据实际感应距离来设定预定阀值，不会减弱第一信号收发器发送的数据信号强度，保证了控制器和智能卡的数据传输稳定性。It can be seen that the utility model detects the strength of the detection signal emitted by the smart card through the distance inspection chip. When the strength of the detection signal reaches a predetermined threshold, the controller begins to communicate with the smart card through the first signal transceiver and the first antenna. For data transmission, the predetermined threshold can be set according to the actual sensing distance, without weakening the strength of the data signal sent by the first signal transceiver, ensuring the stability of data transmission between the controller and the smart card.
在一较优实施例中，如图2，本实用新型还包括支持Zigbee协议的第二信号收发器及第二天线，该第二信号收发器的一端与第二天线连接，另一端与所述控制器连接；In a preferred embodiment, as shown in Figure 2, the utility model also includes a second signal transceiver and a second antenna supporting the Zigbee protocol, one end of the second signal transceiver is connected to the second antenna, and the other end is connected to the second antenna. controller connection;
控制器通过所述第二信号收发器和第二天线发射激活信号，安装在移动终端里的支持Zigbee协议的智能卡收到该激活信号时，向第二信号收发器发送反馈信号，第二信号收发器将该反馈信号发送给控制器，控制器在接收到该反馈信号时向距离检查芯片发送启动信号，距离检查芯片根据该启动信号启动信号接收模块接收智能卡发射的侦测信号，信号接收模块将该接收到的侦测信号发给距离检查芯片，距离检查芯片在该侦测信号的强度达到预定阀值时向控制器发送数据传输信号，控制器根据该数据传输信号通过第二信号收发器和第二天线与智能卡进行数据传输。The controller transmits an activation signal through the second signal transceiver and the second antenna, and when the smart card supporting the Zigbee protocol installed in the mobile terminal receives the activation signal, it sends a feedback signal to the second signal transceiver, and the second signal is sent and received. The controller sends the feedback signal to the controller, and the controller sends a starting signal to the distance checking chip when receiving the feedback signal, and the distance checking chip starts the signal receiving module to receive the detection signal emitted by the smart card according to the starting signal, and the signal receiving module will The received detection signal is sent to the distance inspection chip, and the distance inspection chip sends a data transmission signal to the controller when the strength of the detection signal reaches a predetermined threshold, and the controller passes the second signal transceiver and The second antenna performs data transmission with the smart card.
在一较优实施例中，所述信号接收模块包括功分器和第三天线，功分器的一端与距离检查芯片连接，另一端与第三天线连接。如图2是信号接收模块的一个具体应用实例，在该实例中，信号接收模块包括功分器1、2、3和天线1、2、3、4、5......n，功分器1的一端与距离检查芯片连接，功分器1的另一端分别与功分器2及功分器3连接，功分器2连接有天线1、2、3、4，功分器3连接有天线5......天线n。In a preferred embodiment, the signal receiving module includes a power divider and a third antenna, one end of the power divider is connected to the distance checking chip, and the other end is connected to the third antenna. Figure 2 is a specific application example of the signal receiving module. In this example, the signal receiving module includes power dividers 1, 2, 3 and antennas 1, 2, 3, 4, 5...n, the power One end of splitter 1 is connected to the distance checking chip, the other end of splitter 1 is connected to splitter 2 and splitter 3 respectively, splitter 2 is connected to antennas 1, 2, 3, 4, splitter 3 Antenna 5 ... Antenna n are connected.
在一较优实施例中，移动终端可以是手机或其他便携移动设备，在手机里安装有在2.4GHz频段通信的智能卡，该智能卡通过手机进行供电，保证智能卡能够发送反馈信号、发射侦测信号、与控制器进行数据传输。In a preferred embodiment, the mobile terminal can be a mobile phone or other portable mobile devices, and a smart card communicating in the 2.4GHz frequency band is installed in the mobile phone, and the smart card is powered by the mobile phone to ensure that the smart card can send feedback signals and launch detection signals , Data transmission with the controller.
以上所述的本实用新型实施方式，并不构成对本实用新型保护范围的限定。任何在本实用新型的精神和原则之内所作的修改、等同替换和改进等，均应包含在本实用新型的权利要求保护范围之内。The embodiments of the utility model described above do not constitute a limitation to the protection scope of the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principle of the utility model shall be included in the protection scope of the claims of the utility model.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104660353A (en) * | 2013-11-15 | 2015-05-27 | 国民技术股份有限公司 | Method, device and system for triggering data processing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104660353A (en) * | 2013-11-15 | 2015-05-27 | 国民技术股份有限公司 | Method, device and system for triggering data processing |
| CN104660353B (en) * | 2013-11-15 | 2019-02-26 | 国民技术股份有限公司 | A kind of data processing triggering method, apparatus and system |
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