CN108470202A - 一种nfc-蓝牙双界面非接触式卡片系统 - Google Patents
一种nfc-蓝牙双界面非接触式卡片系统 Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
- G06K19/0707—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation
- G06K19/0708—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation the source being electromagnetic or magnetic
- G06K19/071—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation the source being electromagnetic or magnetic the source being a field other than an interrogation field, e.g. WLAN, cellular phone network
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- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
- G06K19/0724—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs the arrangement being a circuit for communicating at a plurality of frequencies, e.g. for managing time multiplexed communication over at least two antennas of different types
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07766—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement
- G06K19/07767—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement the first and second communication means being two different antennas types, e.g. dipole and coil type, or two antennas of the same kind but operating at different frequencies
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Abstract
本发明公开了一种NFC‑蓝牙双界面非接触式卡片系统,可以实现NFC和蓝牙两种方式的通信,以及利用供电配件对蓝牙通信供电。系统包括NFC‑蓝牙双界面非接触式卡片和供电配件两个部分,供电配件提供NFC载波并通过所述驱动电路进行功率放大和阻抗匹配,将NFC载波耦合到NFC天线,从而传输到所述NFC‑蓝牙双界面非接触式卡片的NFC天线上,为卡片提供电能。卡片在进行NFC通信时,通过NFC读写器对NFC和蓝牙通信同时供电;卡片只进行蓝牙通信而外部没有NFC读写器时,通过供电配件对蓝牙通信供电。
Description
技术领域
本发明涉及非接触通信领域,尤其是一种NFC-蓝牙双界面非接触式卡片系统。
背景技术
随着射频识别技术和IC卡技术的快速发展和有机结合,基于射频技术的非接触式卡片得到广泛应用,具有可靠性高、操作方便、应用范围广等优点。应用较广的是利用NFC(Near Field Communication,近场通信)通信的RFID(Radio Frequency Identification,无线射频识别)卡片,可以用于物品防伪和身份管理等领域。
目前,许多智能手机还不支持NFC功能,而支持NFC功能的智能手机受供应商的限制,其NFC功能通常是受限或不开放的(往往只支持标签功能),这也给NFC卡片与智能手机的通信带来了巨大的问题,比如无法使用智能手机对NFC卡进行访问操作(如无法充值、查询或进行更新)。由于智能手机的蓝牙功能均是不受限的,因此可以通过支持蓝牙通信的RFID卡,与智能手机建立蓝牙通信,使智能手机得以对NFC卡进行操作,或使不支持NFC功能智能手机具备NFC功能。
但是支持蓝牙通信的RFID卡的蓝牙通信需要供电,常用的电池或外部供电装置成本较大,将增加支持蓝牙通信的RFID卡片的制作成本,不利于RFID卡片的推广;而将电池或供电装置集成到支持蓝牙通信的RFID卡片上,将使卡片尺寸变大变厚,给用户使用带来极大不便,同时成本也将增加,这与使用RFID卡片的初衷相悖。
NFC卡片或支持蓝牙通信的RFID卡片一般均是以较低廉的方式发放给用户使用的,如公交公司发放公交卡,银行发放银行卡等。考虑到商业应用,需要RFID卡片具有低成本、便捷性的要求,虽然利用NFC通信的RFID在外部有NFC读写器时可以对卡片供电实现NFC通信和蓝牙通信。但当不存在NFC读写器又需要对卡片进行访问操作时,则仍显得捉襟见肘,这就是由于此时卡片的NFC功能和蓝牙功能均因没有供电装置无法工作而造成的;而且由于蓝牙功能的高功耗(相对于NFC通信),即使移动终端与卡片建立了NFC通信,也往往不能使支持蓝牙功能的NFC卡片启动蓝牙功能,仍然无法满足蓝牙通信要求。因此急需一种供电配件解决蓝牙通信的供电问题。
发明内容
本发明提出了一种NFC-蓝牙双界面非接触式卡片系统,卡片可以同时支持与NFC读写器的NFC通信和与移动终端的蓝牙通信,并利用供电配件解决蓝牙通信的供电问题。
本发明解决其技术问题所采用的技术方案为:
一种NFC-蓝牙双界面非接触式卡片系统包括NFC-蓝牙双界面非接触式卡片和供电配件,所述NFC-蓝牙双界面非接触式卡片包括:蓝牙天线、蓝牙接口电路、NFC接口电路、NFC天线、整流电路和功能模块,所述蓝牙天线和蓝牙接口电路用于蓝牙通信;所述NFC天线和NFC接口电路用于NFC通信;所述整流电路用于从所述NFC天线上获取电能,为所述蓝牙接口电路、NFC接口电路和功能模块供电;所述供电配件包括:NFC载波生成电路、驱动电路和NFC天线,所述的NFC载波生成电路、驱动电路和NFC天线顺次相连,供电配件的NFC天线发射NFC载波,卡片的NFC天线耦合载波,并利用整流电路提取电能;所述供电配件只为卡片供电,不进行数据通信。
优选的,所述供电配件只提供NFC载波,不负载NFC信号;所述NFC载波生成电路产生NFC载波,并通过所述驱动电路进行功率放大和阻抗匹配,将NFC载波耦合到所述NFC天线,从而传输到所述NFC-蓝牙双界面非接触式卡片的NFC天线上,为卡片提供电能。
优选的,所述的供电配件通过外接电源获取电能,如USB供电、家用电源经变压器后供电。所述的NFC载波生成电路提供的电压为5V±10%。所述的驱动电路包括功率放大电路和阻抗匹配电路。供电配件为卡片供电时,NFC-蓝牙双界面非接触式卡片和供电配件的距离小于10cm。
功能模块(6)主要包括控制单元(CPU及RAM等)和/或存储单元(EEPROM和flash存储器等),用于实现卡片的基本功能。
NFC-蓝牙双界面非接触式卡片进行NFC通信时,外部利用NFC读写器对卡片供电,首先通过NFC天线耦合NFC读卡器发出的调制后NFC载波,利用整流电路提取电能,同时为功能模块、NFC接口和蓝牙接口供电,此时,卡片既可以进行NFC通信,也可以进行蓝牙通信。
当外部没有NFC读写器时,卡片不进行NFC通信,需要利用供电配件为卡片供电,利用供电配件发出的未调制的NFC载波,卡片的NFC天线耦合载波,并利用整流电路提取电能,为功能模块和蓝牙接口供电,卡片只进行蓝牙通信。
本发明可以有效解决NFC-蓝牙双界面非接触式卡片的供电问题,本发明的NFC-蓝牙双界面非接触式卡片在存在NFC读卡器时,可以脱离供电配件单独使用;而当外部没有NFC读写器又需要利用移动终端对其进行访问操作时,通过供电配件为卡片供电,实现蓝牙通信。
附图说明
图1是本发明NFC-蓝牙双界面非接触式卡片和供电配件的整体框图。
具体实施方式
下面结合附图对本发明作进一步描述。
参照图1,一种NFC-蓝牙双界面非接触式卡片系统,卡片可以同时支持与NFC读写器的NFC通信和与移动终端的蓝牙通信,并利用供电配件解决蓝牙通信的供电问题,主要包括以下两个部分:NFC-蓝牙双界面非接触式卡片1和供电配件2。
NFC-蓝牙双界面非接触式卡片1进行NFC通信时,外部利用NFC读写器对卡片1供电,首先通过NFC天线3耦合NFC读卡器发出的调制后NFC载波,利用整流电路5提取电能,同时为功能模块6、NFC接口4和蓝牙接口7供电,此时,卡片1既可以进行NFC通信,也可以进行蓝牙通信。
当外部没有NFC读写器时,卡片1不进行NFC通信,需要利用供电配件2为卡片1供电,利用供电配件2发出的未调制的NFC载波,之后,卡片1的NFC天线3耦合载波,并利用整流电路5提取电能,为功能模块6和蓝牙接口7供电,卡片只进行蓝牙通信。
供电配件2中NFC载波生成电路9用于产生NFC载波,频率为13.56MHz,并通过驱动电路10进行功率放大和阻抗匹配,将NFC载波耦合到NFC天线11,通过空间电磁场,传输到卡片1的NFC天线3上。供电配件2,作为卡片1未进行NFC通信或外部没有NFC读写器时的供电设备,此时卡片的蓝牙通信的供电由供电配件2提供。
所述的供电配件通过外接电源获取电能。所述的NFC载波生成电路提供的电压为5V±10%。所述的驱动电路包括功率放大电路和阻抗匹配电路。供电配件为卡片供电时,NFC-蓝牙双界面非接触式卡片和供电配件的距离小于10cm。
上述实施例用来解释说明本发明,而不是对本发明进行限制,在本发明的精神和权利要求的保护范围内,对本发明做出的任何修改和改变,都落入本发明的保护范围。
Claims (6)
1.一种NFC-蓝牙双界面非接触式卡片系统,其特征在于,包括NFC-蓝牙双界面非接触式卡片和供电配件,所述NFC-蓝牙双界面非接触式卡片包括:蓝牙天线、蓝牙接口电路、NFC接口电路、NFC天线、整流电路和功能模块,所述蓝牙天线和蓝牙接口电路用于蓝牙通信;所述NFC天线和NFC接口电路用于NFC通信;所述整流电路用于从所述NFC天线上获取电能,为所述蓝牙接口电路、NFC接口电路和功能模块供电;所述供电配件包括:NFC载波生成电路、驱动电路和NFC天线,所述的NFC载波生成电路、驱动电路和NFC天线顺次相连,供电配件的NFC天线发射NFC载波,NFC-蓝牙双界面非接触式卡片卡片的NFC天线耦合载波,并利用整流电路提取电能;所述供电配件只为卡片供电,不进行数据通信。
2.根据权利要求1所述的NFC-蓝牙双界面非接触式卡片系统,其特征在于:所述供电配件只提供NFC载波,不负载NFC信号;所述NFC载波生成电路产生NFC载波,并通过所述驱动电路进行功率放大和阻抗匹配,将NFC载波耦合到所述NFC天线,从而传输到所述NFC-蓝牙双界面非接触式卡片的NFC天线上,为卡片提供电能。
3.根据权利要求1所述的NFC-蓝牙双界面非接触式卡片系统,其特征在于所述的供电配件通过外接电源获取电能。
4.根据权利要求1所述的NFC-蓝牙双界面非接触式卡片系统,其特征在于所述的驱动电路包括功率放大电路和阻抗匹配电路。
5.根据权利要求1所述的NFC-蓝牙双界面非接触式卡片系统,其特征在于供电配件为卡片供电时,NFC-蓝牙双界面非接触式卡片和供电配件的距离小于10cm。
6.根据权利要求1所述的NFC-蓝牙双界面非接触式卡片系统,其特征在于所述的功能模块包括存储单元、控制单元中的一种或多种。
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CN205354075U (zh) * | 2014-12-15 | 2016-06-29 | 珠海艾派克微电子有限公司 | 非接触式卡片 |
CN206402217U (zh) * | 2017-02-06 | 2017-08-11 | 烟台淼盾物联技术有限公司 | 一种集语音对讲蓝牙nfc于一体的读卡器 |
CN107257165A (zh) * | 2017-07-31 | 2017-10-17 | 青岛众海汇智能源科技有限责任公司 | 无线电器系统及多模式无线供电方法 |
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CN109921832A (zh) * | 2019-02-20 | 2019-06-21 | 浙江讯联信息技术有限公司 | 无线传输系统、采用其的双频读卡器及其磁场供电方法 |
CN110708096A (zh) * | 2019-09-20 | 2020-01-17 | 广州小鸡快跑网络科技有限公司 | 智能外设以及nfc供电方法 |
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