WO2015078036A1 - Ultra-long distance bluetooth communication module - Google Patents
Ultra-long distance bluetooth communication module Download PDFInfo
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- WO2015078036A1 WO2015078036A1 PCT/CN2013/088664 CN2013088664W WO2015078036A1 WO 2015078036 A1 WO2015078036 A1 WO 2015078036A1 CN 2013088664 W CN2013088664 W CN 2013088664W WO 2015078036 A1 WO2015078036 A1 WO 2015078036A1
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- 239000000758 substrate Substances 0.000 claims abstract description 8
- 239000000919 ceramic Substances 0.000 claims abstract description 7
- 241001417527 Pempheridae Species 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0485—Dielectric resonator antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2291—Supports; Mounting means by structural association with other equipment or articles used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN]
Definitions
- the present invention relates to the field of Bluetooth communication, and in particular, to a Bluetooth communication module of a super long distance.
- Bluetooth 4.0 is a new generation of high speed and low power Bluetooth specifications.
- the current Bluetooth 4.0 communication module has a relatively short transmission distance, which is far from reaching a super long distance of 400 to 500 meters.
- the demand for ultra-long-distance communication of Bluetooth modules is becoming more and more urgent. For example, in an application that uses a smartphone to control a sweeper device via Bluetooth, the communication distance between the smartphone and the sweeper needs to reach 400 to 500 meters. It is obvious that the prior art is difficult to meet this demand.
- the utility model utilizes the 915 MHz radio frequency communication technology to transmit the Bluetooth data to a distant distance, thereby realizing the ultra-long-distance Bluetooth communication.
- the present invention provides a super long-distance Bluetooth communication module, the module includes a substrate and a Bluetooth communication unit disposed on the substrate, the Bluetooth communication unit includes a Bluetooth chip, a balun circuit, and an impedance connected in sequence.
- the matching circuit and the 3dBi ceramic antenna are characterized in that the module further comprises a radio frequency communication unit connected to the Bluetooth communication unit.
- the Bluetooth chip is a CC2540 chip
- the CC2540 chip comprises an 8051 microcontroller
- the 8051 microcontroller comprises a Bluetooth communication protocol stack program running unit.
- the radio frequency communication part includes a 915 MHz radio frequency chip, a matching circuit, a radio frequency switch, and a ceramic antenna which are sequentially connected.
- the Bluetooth chip further includes an internal memory, and the 915 MHz radio frequency chip is connected to the Bluetooth chip and is capable of reading and writing access to the internal memory.
- the 915 MHz radio frequency chip is an SI4432 chip.
- the 8051 microcontroller further comprises a radio frequency communication protocol stack program running unit and a radio frequency switch control program running unit.
- FIG. 1 is a schematic structural view of a preferred embodiment of a super long distance Bluetooth communication module according to the present invention.
- DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The ultra long-distance Bluetooth communication module of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
- 1 is a schematic structural diagram of a preferred embodiment of a super long distance Bluetooth communication module according to the present invention.
- the ultra long-distance Bluetooth communication module includes a substrate and a Bluetooth communication portion and a radio frequency communication portion disposed on the substrate.
- the Bluetooth communication part includes a Bluetooth chip, a balun circuit, an impedance matching circuit and a 3dBi ceramic antenna which are sequentially connected;
- the RF communication unit includes a 915MHz RF chip, a matching circuit, a RF switch, and a ceramic antenna that are sequentially connected; a connection between the Bluetooth chip and the 915MHz RF chip.
- the Bluetooth chip is a CC2540 chip
- the 915 MHz RF chip is a SI4432 chip.
- the CC2540 Bluetooth chip is a low-power Bluetooth 4.0 SOC chip designed and manufactured by TI, which includes an 8051 microcontroller.
- the SI4432 chip is an RF transceiver chip designed and manufactured by Cilicon LABs, which requires an external micro-control unit (MCU). Perform control operations. Therefore, you can use the 8051 microcontroller inside the CC2540 to control the SI4432 through the GPIO analog SPI bus.
- MCU micro-control unit
- ⁇ use the CC2540 as the main controller of the Bluetooth communication part and the RF communication part, and run the Bluetooth communication protocol on the 8051 microcontroller.
- the stack program, the RF communication protocol stack program, the RF switch control program, and other hardware and software control programs can simultaneously realize the communication functions of the Bluetooth communication unit and the RF communication unit.
- the CC2540 chip also includes internal memory, and the SI4432 chip can be read and written.
- the 915MHz RF communication distance can easily reach about 500 meters.
- the SI4432 chip has a built-in 20dB power amplifier module, and its receiving sensitivity is -121dBm, so it can achieve a long stable communication distance.
- the 915MHz RF communication can transmit Bluetooth data to a long distance, thus achieving ultra-long-distance Bluetooth communication, for example, the communication distance between the mobile phone with the module and other devices (for example, the leveling device) can reach 400. ⁇ 500 meters.
- the module works by using the module as a smartphone and communicating with the scanner device as an example.
- the sweeper control software in the smartphone will need to be sent via the Bluetooth protocol.
- the transmitted data is transmitted to the module, and the Bluetooth chip in the module forwards the received Bluetooth data to the 915MHz radio frequency chip in the module and controls the radio frequency chip to perform data transmission; the 915MHz radio frequency chip in the leveling device receives the data, according to The control command carried in the data is processed, and then the data is returned to the module; the 915MHz radio frequency chip in the module receives the returned data and forwards the data to the Bluetooth chip, and the Bluetooth chip transmits the data to the sweeper in the smart phone through the Bluetooth protocol. controlling software. In this way, data exchange between the smartphone and the sweeper is achieved.
- the ultra-long-distance Bluetooth communication module of the utility model can greatly increase the communication distance of the Bluetooth communication module, and the communication distance thereof reaches 400 to 500 meters.
- the RF communication unit is integrated inside the Bluetooth communication module, the cost brought by the external module is reduced, and the module is miniaturized. At the same time, users of the Bluetooth communication module do not need to purchase and install other modules to achieve long-distance communication, thereby improving the user experience.
- the above specific embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the present invention.
- the scope of the present invention is defined by the claims. A person skilled in the art can make various modifications or equivalents to the present invention within the spirit and scope of the present invention. These modifications and equivalents are also considered to fall within the scope of the present invention.
Abstract
Provided in this utility model is an ultra-long distance Bluetooth communication module, comprising: a substrate and a Bluetooth communication part disposed on the substrate; the Bluetooth communication part comprises a Bluetooth chip, a balun circuit, an impedance matching circuit and a 3dBi ceramic antenna all sequentially connected; the module further comprises an RF communication part connected to the Bluetooth communication part. The ultra-long distance Bluetooth communication module of this utility model provides a communication distance of 400-500 meters for the Bluetooth module, while ensuring low cost and module miniaturization.
Description
超远距离蓝牙通信模块 技术领域 本实用新型涉及蓝牙通信领域， 特别涉及一种超远距离的蓝牙通 信模块。 背景技术 蓝牙 4.0是新一代的高速并且低功耗的蓝牙规格。 目前的蓝牙 4.0 通信模块的传输距离都比较近， 远不能达到 400~500米这样的超远距 离。 随着智能手机的普及应用， 对蓝牙模块超远距离通信的需求也越 来越迫切。 比如在用智能手机通过蓝牙控制扫平仪设备的应用中， 需 要智能手机与扫平仪之间的通信距离达到 400~500米。 显然现有技术 难以满足该需求。 实用新型内容 为了解决现有技术中的蓝牙通信距离较近的问题， 本实用新型利 用 915MHz的射频通信技术将蓝牙数据传送到较远的距离， 实现了超 远距离的蓝牙通信。 为此， 本实用新型提供了一种超远距离蓝牙通信模块， 该模块包 括基板以及设置于所述基板上的蓝牙通信部， 所述蓝牙通信部包括依 次连接的蓝牙芯片、 巴伦电路、 阻抗匹配电路和 3dBi陶瓷天线， 其特 征在于， 该模块还包括与所述蓝牙通信部连接的射频通信部。
优选地， 所述蓝牙芯片为 CC2540芯片， 所述 CC2540芯片包括 8051微控制器，所述 8051微控制器包括蓝牙通信协议栈程序运行单元。 具体地， 所述射频通信部包括依次连接的 915MHz射频芯片、 匹 配电路、 射频开关和陶瓷天线。 优选地， 所述蓝牙芯片还包括内部存储器， 所述 915MHz射频芯 片与所述蓝牙芯片连接并能够读写访问所述内部存储器。 优选地， 所述 915MHz射频芯片为 SI4432芯片。 优选地， 所述 8051微控制器还包括射频通信协议栈程序运行单元 以及射频开关控制程序运行单元。 与现有技术相比， 本实用新型的超远距离蓝牙通信模块， 在保证 低成本、 模块小型化的同时， 使蓝牙模块的通信距离达到 400~500米。 附图说明 图 1 为本实用新型的超远距离蓝牙通信模块的优选的实施方式的 结构示意图。 具体实施方式 下面结合附图和具体实施方式对本实用新型的超远距离蓝牙通信 模块作进一歩的详细描述， 但不作为对本实用新型的限定。 参照图 1，为本实用新型的超远距离蓝牙通信模块的优选的实施方 式的结构示意图。 在该优选的实施方式中， 超远距离蓝牙通信模块包 括基板以及设置于基板上的蓝牙通信部和射频通信部。 蓝牙通信部包 括依次连接的蓝牙芯片、 巴伦电路、 阻抗匹配电路和 3dBi陶瓷天线；
射频通信部包括依次连接的 915MHz射频芯片、 匹配电路、 射频开关 和陶瓷天线； 蓝牙芯片和 915MHz射频芯片之间连接。 本实施例中蓝 牙芯片为 CC2540芯片， 915MHz射频芯片为 SI4432芯片。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of Bluetooth communication, and in particular, to a Bluetooth communication module of a super long distance. BACKGROUND OF THE INVENTION Bluetooth 4.0 is a new generation of high speed and low power Bluetooth specifications. The current Bluetooth 4.0 communication module has a relatively short transmission distance, which is far from reaching a super long distance of 400 to 500 meters. With the popularization of smart phones, the demand for ultra-long-distance communication of Bluetooth modules is becoming more and more urgent. For example, in an application that uses a smartphone to control a sweeper device via Bluetooth, the communication distance between the smartphone and the sweeper needs to reach 400 to 500 meters. It is obvious that the prior art is difficult to meet this demand. SUMMARY OF THE INVENTION In order to solve the problem that the Bluetooth communication distance in the prior art is relatively close, the utility model utilizes the 915 MHz radio frequency communication technology to transmit the Bluetooth data to a distant distance, thereby realizing the ultra-long-distance Bluetooth communication. To this end, the present invention provides a super long-distance Bluetooth communication module, the module includes a substrate and a Bluetooth communication unit disposed on the substrate, the Bluetooth communication unit includes a Bluetooth chip, a balun circuit, and an impedance connected in sequence. The matching circuit and the 3dBi ceramic antenna are characterized in that the module further comprises a radio frequency communication unit connected to the Bluetooth communication unit. Preferably, the Bluetooth chip is a CC2540 chip, the CC2540 chip comprises an 8051 microcontroller, and the 8051 microcontroller comprises a Bluetooth communication protocol stack program running unit. Specifically, the radio frequency communication part includes a 915 MHz radio frequency chip, a matching circuit, a radio frequency switch, and a ceramic antenna which are sequentially connected. Preferably, the Bluetooth chip further includes an internal memory, and the 915 MHz radio frequency chip is connected to the Bluetooth chip and is capable of reading and writing access to the internal memory. Preferably, the 915 MHz radio frequency chip is an SI4432 chip. Preferably, the 8051 microcontroller further comprises a radio frequency communication protocol stack program running unit and a radio frequency switch control program running unit. Compared with the prior art, the ultra-long-distance Bluetooth communication module of the utility model ensures the communication distance of the Bluetooth module reaches 400-500 meters while ensuring low cost and miniaturization of the module. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view of a preferred embodiment of a super long distance Bluetooth communication module according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The ultra long-distance Bluetooth communication module of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but not as a limitation of the present invention. 1 is a schematic structural diagram of a preferred embodiment of a super long distance Bluetooth communication module according to the present invention. In the preferred embodiment, the ultra long-distance Bluetooth communication module includes a substrate and a Bluetooth communication portion and a radio frequency communication portion disposed on the substrate. The Bluetooth communication part includes a Bluetooth chip, a balun circuit, an impedance matching circuit and a 3dBi ceramic antenna which are sequentially connected; The RF communication unit includes a 915MHz RF chip, a matching circuit, a RF switch, and a ceramic antenna that are sequentially connected; a connection between the Bluetooth chip and the 915MHz RF chip. In this embodiment, the Bluetooth chip is a CC2540 chip, and the 915 MHz RF chip is a SI4432 chip.
CC2540蓝牙芯片是 TI公司设计生产的低功耗蓝牙 4.0 SOC芯片， 其包括 8051微控制器； SI4432芯片是 Cilicon LABs公司设计生产的射 频收发芯片， 其需要外置的微控制单元 （MCU) 对其进行控制操作。 因此， 可以利用 CC2540内部的 8051微控制器通过 GPIO模拟 SPI总 线对 SI4432进行控制， §Ρ， 将 CC2540同时作为蓝牙通信部和射频通 信部的主控制器， 在 8051微控制器上运行蓝牙通信协议栈程序、 射频 通信协议栈程序、 射频开关控制程序以及其他软硬件控制程序， 从而 可以同时实现蓝牙通信部和射频通信部的通信功能。 此外， CC2540芯片还包括内部存储器， SI4432芯片能够读写访问The CC2540 Bluetooth chip is a low-power Bluetooth 4.0 SOC chip designed and manufactured by TI, which includes an 8051 microcontroller. The SI4432 chip is an RF transceiver chip designed and manufactured by Cilicon LABs, which requires an external micro-control unit (MCU). Perform control operations. Therefore, you can use the 8051 microcontroller inside the CC2540 to control the SI4432 through the GPIO analog SPI bus. §Ρ, use the CC2540 as the main controller of the Bluetooth communication part and the RF communication part, and run the Bluetooth communication protocol on the 8051 microcontroller. The stack program, the RF communication protocol stack program, the RF switch control program, and other hardware and software control programs can simultaneously realize the communication functions of the Bluetooth communication unit and the RF communication unit. In addition, the CC2540 chip also includes internal memory, and the SI4432 chip can be read and written.
CC2540芯片的内部存储器。这样就实现了蓝牙通信部和射频通信部的 数据透传， 即蓝牙通信部和射频通信部中的一个通信部可以转发另一 个通信部发送或接收的数据。 Internal memory of the CC2540 chip. In this way, data transmission through the Bluetooth communication unit and the RF communication unit is realized, that is, one communication unit in the Bluetooth communication unit and the RF communication unit can forward data transmitted or received by another communication unit.
915MHz射频通信距离可以轻易达到 500米左右， SI4432芯片内 置了 20dB的功放模块， 其接收灵敏度为 -121dBm， 因此可以实现较远 的稳定通信距离。 利用 915MHz射频通信能够把蓝牙数据传送到较远 的距离， 从而实现了超远距离的蓝牙通信， 比如可以使得内置该模块 的手机与其他设备（例如， 扫平仪设备）之间的通信距离达到 400~500 米。 以该模块用于智能手机并且与扫平仪设备进行通信为例说明该模 块的工作原理。 智能手机中的扫平仪控制软件通过蓝牙协议将需要发
送的数据传输给该模块， 该模块中的蓝牙芯片把接收到的蓝牙数据转 发给该模块中的 915MHz射频芯片并控制射频芯片进行数据发送； 扫 平仪设备中的 915MHz射频芯片接收到数据， 根据数据中携带的控制 命令进行处理， 之后返回数据给该模块； 该模块中的 915MHz射频芯 片接收该返回的数据并转发给蓝牙芯片， 蓝牙芯片再通过蓝牙协议将 数据发送给智能手机中的扫平仪控制软件。 如此， 就实现了智能手机 和扫平仪之间的数据交换。 本实用新型的超远距离蓝牙通信模块， 能够大大增加蓝牙通信模 块的通信距离， 使其通信距离达到 400~500米。 由于在蓝牙通信模块 内部集成射频通信部来实现， 降低了外置模块带来的成本， 并且实现 了模块的小型化。 同时， 蓝牙通信模块的使用者也不需要再购买和安 装其他模块就可以实现远距离通信， 从而提高了用户体验。 以上具体实施方式仅为本实用新型的示例性实施方式， 不能用于 限定本实用新型， 本实用新型的保护范围由权利要求书限定。 本领域 技术人员可以在本实用新型的实质和保护范围内， 对本实用新型做出 各种修改或等同替换， 这些修改或等同替换也应视为落在本实用新型 的保护范围内。
The 915MHz RF communication distance can easily reach about 500 meters. The SI4432 chip has a built-in 20dB power amplifier module, and its receiving sensitivity is -121dBm, so it can achieve a long stable communication distance. The 915MHz RF communication can transmit Bluetooth data to a long distance, thus achieving ultra-long-distance Bluetooth communication, for example, the communication distance between the mobile phone with the module and other devices (for example, the leveling device) can reach 400. ~500 meters. The module works by using the module as a smartphone and communicating with the scanner device as an example. The sweeper control software in the smartphone will need to be sent via the Bluetooth protocol. The transmitted data is transmitted to the module, and the Bluetooth chip in the module forwards the received Bluetooth data to the 915MHz radio frequency chip in the module and controls the radio frequency chip to perform data transmission; the 915MHz radio frequency chip in the leveling device receives the data, according to The control command carried in the data is processed, and then the data is returned to the module; the 915MHz radio frequency chip in the module receives the returned data and forwards the data to the Bluetooth chip, and the Bluetooth chip transmits the data to the sweeper in the smart phone through the Bluetooth protocol. controlling software. In this way, data exchange between the smartphone and the sweeper is achieved. The ultra-long-distance Bluetooth communication module of the utility model can greatly increase the communication distance of the Bluetooth communication module, and the communication distance thereof reaches 400 to 500 meters. Since the RF communication unit is integrated inside the Bluetooth communication module, the cost brought by the external module is reduced, and the module is miniaturized. At the same time, users of the Bluetooth communication module do not need to purchase and install other modules to achieve long-distance communication, thereby improving the user experience. The above specific embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the present invention. The scope of the present invention is defined by the claims. A person skilled in the art can make various modifications or equivalents to the present invention within the spirit and scope of the present invention. These modifications and equivalents are also considered to fall within the scope of the present invention.
Claims
1、 一种超远距离蓝牙通信模块， 该模块包括基板以及设置于所述 基板上的蓝牙通信部， 所述蓝牙通信部包括依次连接的蓝牙芯片、 巴 伦电路、 阻抗匹配电路和 3dBi陶瓷天线， 其特征在于， 该模块还包括 与所述蓝牙通信部连接的射频通信部。 1. An ultra-long-distance Bluetooth communication module. The module includes a substrate and a Bluetooth communication part disposed on the substrate. The Bluetooth communication part includes a Bluetooth chip, a balun circuit, an impedance matching circuit and a 3dBi ceramic antenna connected in sequence. , characterized in that the module also includes a radio frequency communication unit connected to the Bluetooth communication unit.
2、 根据权利要求 1所述的超远距离蓝牙通信模块， 其特征在于， 所述蓝牙芯片为 CC2540芯片，所述 CC2540芯片包括 8051微控制器， 所述 8051微控制器包括蓝牙通信协议栈程序运行单元。 2. The ultra-long-distance Bluetooth communication module according to claim 1, characterized in that: the Bluetooth chip is a CC2540 chip, the CC2540 chip includes an 8051 microcontroller, and the 8051 microcontroller includes a Bluetooth communication protocol stack program Run the unit.
3、 根据权利要求 1所述的超远距离蓝牙通信模块， 其特征在于， 所述射频通信部包括依次连接的 915MHz射频芯片、 匹配电路、 射频 开关和陶瓷天线。 3. The ultra-long-distance Bluetooth communication module according to claim 1, characterized in that the radio frequency communication part includes a 915MHz radio frequency chip, a matching circuit, a radio frequency switch and a ceramic antenna connected in sequence.
4、 根据权利要求 3所述的超远距离蓝牙通信模块， 其特征在于， 所述蓝牙芯片还包括内部存储器， 所述 915MHz射频芯片与所述蓝牙 芯片连接并能够读写访问所述内部存储器。 4. The ultra-long-distance Bluetooth communication module according to claim 3, wherein the Bluetooth chip further includes an internal memory, and the 915MHz radio frequency chip is connected to the Bluetooth chip and can read and write access to the internal memory.
5、 根据权利要求 3所述的超远距离蓝牙通信模块， 其特征在于， 所述 915MHz射频芯片为 SI4432芯片。 5. The ultra-long-distance Bluetooth communication module according to claim 3, characterized in that the 915MHz radio frequency chip is an SI4432 chip.
6、 根据权利要求 2所述的超远距离蓝牙通信模块， 其特征在于， 所述 8051微控制器还包括射频通信协议栈程序运行单元以及射频开关 控制程序运行单元。
6. The ultra-long-distance Bluetooth communication module according to claim 2, characterized in that the 8051 microcontroller also includes a radio frequency communication protocol stack program running unit and a radio frequency switch control program running unit.
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| CN201320759268.4U CN203590225U (en) | 2013-11-26 | 2013-11-26 | Ultra long distance bluetooth communication module |
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| CN104507040B (en) * | 2014-12-29 | 2018-03-20 | 重庆甲虫网络科技有限公司 | The control method of low-power consumption distance transmission system |
| US9820082B2 (en) | 2015-05-18 | 2017-11-14 | International Business Machines Corporation | Data communication with low-energy devices |
| CN107968672A (en) * | 2016-10-20 | 2018-04-27 | 国民技术股份有限公司 | A kind of method and its circuit for improving Bluetooth communication distance |
| CN110366154A (en) * | 2019-07-26 | 2019-10-22 | 深圳市瑞荣达电子有限公司 | A kind of Bluetooth audio frequency wireless networking system |
| CN110392327A (en) * | 2019-07-26 | 2019-10-29 | 深圳市瑞荣达电子有限公司 | A kind of ad hoc network Bluetooth speaker system |
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|---|---|---|---|---|
| US20050113138A1 (en) * | 2002-03-18 | 2005-05-26 | Greg Mendolia | RF ID tag reader utlizing a scanning antenna system and method |
| CN101453249A (en) * | 2007-12-04 | 2009-06-10 | 希姆通信息技术（上海）有限公司 | Wireless communication module integrated with Bluetooth receiving function |
| CN202533976U (en) * | 2012-02-08 | 2012-11-14 | 深圳市远望谷信息技术股份有限公司 | Wireless programming device used for electronic label |
| CN202906905U (en) * | 2012-10-17 | 2013-04-24 | 福州海峡职业技术学院 | Bluetooth module |
-
2013
- 2013-11-26 CN CN201320759268.4U patent/CN203590225U/en not_active Expired - Lifetime
- 2013-12-05 WO PCT/CN2013/088664 patent/WO2015078036A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050113138A1 (en) * | 2002-03-18 | 2005-05-26 | Greg Mendolia | RF ID tag reader utlizing a scanning antenna system and method |
| CN101453249A (en) * | 2007-12-04 | 2009-06-10 | 希姆通信息技术（上海）有限公司 | Wireless communication module integrated with Bluetooth receiving function |
| CN202533976U (en) * | 2012-02-08 | 2012-11-14 | 深圳市远望谷信息技术股份有限公司 | Wireless programming device used for electronic label |
| CN202906905U (en) * | 2012-10-17 | 2013-04-24 | 福州海峡职业技术学院 | Bluetooth module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203590225U (en) | 2014-05-07 |
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