CN102801871A - Radio frequency smart card and control method thereof - Google Patents
Radio frequency smart card and control method thereof Download PDFInfo
- Publication number
- CN102801871A CN102801871A CN2011104038076A CN201110403807A CN102801871A CN 102801871 A CN102801871 A CN 102801871A CN 2011104038076 A CN2011104038076 A CN 2011104038076A CN 201110403807 A CN201110403807 A CN 201110403807A CN 102801871 A CN102801871 A CN 102801871A
- Authority
- CN
- China
- Prior art keywords
- mcu
- radio
- smart card
- frequency
- radio frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
Abstract
The invention provides a radio frequency smart card, which comprises a micro control unit (MCU), a radio frequency module and a timer, wherein the timer is used for awakening the MCU in a suspended state at preset time or in a preset mode; and the radio frequency module outputs a varied voltage signal when receiving data, and the varied voltage signal serves as an external interrupt signal of the MCU to awaken the MCU. The invention also provides a method for controlling the radio frequency smart card. According to the method, standby power consumption can be lowered by software control over the receiving time of each radio frequency channel and the sleep mode time of the radio frequency smart card.
Description
Technical field
The present invention relates to the smart card techniques of communication technical field, relate in particular to the smart card techniques of mobile payment field band radio-frequency enabled.
Background technology
Along with development of wireless communication devices, the particularly development of close range communication techniques, mobile phone mobile payment the short distance wireless communication technology has had the application of scale in social life.Can realize that the carrier of this application technology is radio frequency smart card and the reader/writer module that can discern this card.
Radio frequency smart card is combined by a radio-frequency module+sim module, and is consistent with traditional SIM on the profile.Sim module is accomplished traditional telecommunication service, and radio frequency smart card can be accomplished new business function, for example the function that can accomplish of gate inhibition's card, credit card, small amount payment card, attendance card and other smart card.Radio frequency smart card is because the RF module that increases newly (being radio-frequency module, down together) has been expanded mobile phone card institute ability loaded service greatly.Make people carry a mobile phone that radio frequency smart card is housed, just can realize the many application in the daily lifes such as gate inhibition, work attendance, consumption.
But, be radio-frequency module and some other necessary electronic components and parts because radio frequency smart card has increased RF, when increasing product function, also increased the power consumption of product.Under the situation that does not have to increase at cell-phone battery electric-charge quantity, the cell phone standby time significantly shortens.This will cause user's use inconvenience, even can make people refuse to use this new product.
Summary of the invention
The present invention provides a kind of radio frequency smart card and control method thereof of effective reduction stand-by power consumption.
The present invention provides a kind of radio frequency smart card, comprises MCU and radio-frequency module, and said radio frequency smart card also comprises timer, is used under Preset Time or pattern, the MCU that is in halted state being waken up.
Preferably, said timer is integrated on MCU or the radio-frequency module or is element independently.
Preferably, the voltage signal that output changed when radio-frequency module received data, the voltage signal of said variation wakes said MCU up as the external interrupt signal of MCU.
The present invention also provides a kind of control method of radio frequency smart card, and this method comprises the steps:
A: the good frequency-hopping method of software setting, carry out initialization to radio-frequency devices;
B:MCU drives radio-frequency module and gets into the Data Receiving pattern, after MCU sets outside arousal function and low-power consumption timer arousal function, gets into shutdown mode;
C: if radio-frequency module receives data, wake MCU up, after MCU is waken up, proceed to step e through the external interrupt wakeup function;
D: radio-frequency module does not receive data, can not wake MCU up, in such cases, after low-power consumption timer timing arrives, wakes MCU up, after MCU is waken up, proceeds to next procedure;
E:MCU is waken up, according to predefined software frequency-hopping method, resets the receiving channels of next radio-frequency module, gets back to step B.
Preferably, in step B, when all preset receiving channelss are all intercepted, been scanned and do not receive data, MCU resets the low-power consumption timer, gets into park mode, and in this pattern, radio-frequency module also gets into standby mode.
Preferably, the park mode time of time of reception and the radio frequency smart card through each channel of software control.
Through above radio frequency smart card and control method thereof; Increase timer and neither influence the application of wireless radiofrequency function with the park mode time that software is controlled time of reception and the radio frequency smart card of each channel; Can power consumption be reduced in the critical field simultaneously; Promptly increase the RF intelligent card function, the power consumption of increase does not influence the stand-by time of battery of mobile phone basically less than 5%.Because the further reduction of power consumption can also promote mobile phone and radio frequency smart card fitting percentage.Content of the present invention can make the user satisfaction of this product of radio frequency smart card be improved.
Description of drawings
Fig. 1 is a radio frequency smart card module frame chart of the present invention;
Fig. 2 is radio frequency smart card working time slot figure;
Fig. 3 is the control method flow chart of radio frequency smart card of the present invention.
Embodiment
To combine accompanying drawing and specific embodiment to come the present invention is done further explain below.
As shown in Figure 1, be radio frequency smart card module frame chart of the present invention, wherein sim module is accomplished traditional telecommunication service, is accomplished the management of institute's loaded service function and power consumption by chip operating system.The present invention provides a kind of radio frequency smart card, comprises MCU, and said radio frequency smart card also comprises timer, and said MCU gets into shutdown mode after setting said timer arousal function, when said timer timing to after wake the MCU that is in shutdown mode up.The voltage signal that output changed when radio-frequency module received data, the voltage signal of said variation wakes said MCU up as the external interrupt signal of MCU.Wherein, said timer is integrated in MCU and goes up or be integrated on the RF module, and certainly, timer also can be an independent devices.
Based on said radio frequency smart card, main following 2 devices and corresponding work mode are arranged in this card:
A: the MCU of control radio-frequency module has 2 kinds of mode of operations, general mode and shutdown modes at least.When MCU is operated in general mode, the data transmit-receive work of control radio-frequency module, this moment, the MCU current drain was in the mA level; When MCU is operated in shutdown mode, radio-frequency module is not controlled, self gets into the extremely low state of power consumption, and CPU core all quits work with all peripheral hardwares, only leaves external interrupt wakeup function and low-power consumption timer arousal function.At this moment, the MCU current drain is in tens uA ranks.
B: radio-frequency module has 2 kinds of mode of operations, data transmit-receive pattern and standby mode.The data transmit-receive pattern belongs to normal mode of operation, and power consumption is in the mA rank; Standby mode, radio-frequency module stop data transmit-receive work, and power consumption is in tens uA ranks.
C: among the above-mentioned steps A, the external interrupt wakeup function is meant, sends or receive when the radio-frequency module data to finish, and radio-frequency module wakes an IO pin level upset on the MCU up MCU; Low-power consumption timer arousal function is meant that it is very low that a frequency is set, thereby the also extremely low timer of power consumption wakes MCU up from shutdown mode, thus work such as the frequency hopping of control radio-frequency devices, data transmit-receive.What pay special attention to is that this low-power consumption timer generally all is integrated in the MCU the inside, also can be integrated in RF device the inside, can also be an independently timer.In one embodiment, this timer is inner at MCU, RC running clock source, and frequency range 32K～80KHz, typical frequencies 40KHz can be referred to as LSI, i.e. Low Speed InternalRC Oscillator.When this timer work, typical current consumption is 0.65uA 40KHz, and maximum is no more than 1.2uA80KHz.Among the above-mentioned steps B, the mode of operation of radio-frequency module is controlled by MCU fully.As shown in Figure 2, for radio frequency smart card working time slot figure, in the operating time of radio-frequency module, MCU be divided into the operating time and downtime 2 kinds of patterns.In the operating time, consume big electric current; In downtime, the MCU current drain is very low.Than the operating time, can ignore.Wherein, the single channel of said MCU is meant on a channel work-downtime, and MCU is waken up back work and the one-period that gets into shutdown mode again, comprises single channel operating time of MCU and the single channel of MCU downtime.The single channel operating time of said MCU is meant in the time that a channel is intercepted the time that MCU is in running order; The single channel of MCU is meant that in the time that a channel is intercepted, MCU is in the time of shutdown downtime, the operating state that have only RF to be in to intercept this moment.On same channel, be meant: radio-frequency module is operated in frequency-hopping mode, so-called frequency hopping, and promptly radio-frequency module receives at a fixed time on a channel, if time is up, then changes a channel and continues to receive.So circulation.Such as, RF being set in 5 channels, working, each channel evenly receives 1mS.Be that channel 1 receives 1mS, channel 2 receives 1mS... channel 5 and receives 1mS then, and RF device dormancy then is after dormancy time arrives, from the reception work of channel 1 a beginning new round.
As shown in Figure 3, be the control method flow chart of radio frequency smart card of the present invention, a kind of control method of radio frequency smart card is provided, this method comprises the steps:
A: the good frequency-hopping method of software setting, carry out initialization to radio-frequency devices;
B:MCU drives radio-frequency module and gets into the Data Receiving pattern, after MCU sets outside arousal function and low-power consumption timer arousal function, gets into shutdown mode;
C: if radio-frequency module receives data, wake MCU up, after MCU is waken up, proceed to step e through outside arousal function;
D: radio-frequency module does not receive data, can not wake MCU up, in such cases, after low-power consumption timer timing arrives, wakes MCU up, after MCU is waken up, proceeds to next procedure;
E:MCU is waken up, according to predefined software frequency-hopping method, resets the receiving channels of next radio-frequency module, gets back to step B.
In step B, when all preset receiving channelss are all intercepted, been scanned and do not receive data, MCU resets the low-power consumption timer, gets into long shutdown mode, is called park mode, and in this pattern, radio-frequency devices also gets into standby mode.At this moment, the current drain of radio frequency smart card is extremely low, greatly about about 20uA.
In above-mentioned steps B and step e, MCU is in mode of operation, but owing to MCU only need reset RF device working channel and reset the low-power consumption timer, thereby the operating time is very short, in 1mS, thereby the power consumption of MCU is also very low.The park mode time of time of reception and radio frequency smart card through each channel of software control, promptly can control the size of average stand-by power consumption.By software setting, this timer timing length has 2: single channel receives the timing of duration, refers to that MCU is operated in the frequency modulation pattern; The time of reception of each channel is fixed; As at a fixed time, the RF device is not received data, and this timer wakes MCU up; After MCU wakes up, RF is set gets into another channel reception data; The timing of radio-frequency module dormancy duration refer to if all channels are intercepted successively to finish, and the RF device is not received any data, at MCU RF is set and gets into park mode, self gets into shutdown mode simultaneously yet, to save current drain.
Through the control method of above step, neither influence the application of wireless radiofrequency function, can power consumption be reduced in the critical field simultaneously, promptly increase the RF intelligent card function, the power consumption of increase approximates the RF device operating time greatly.The electric current that the RF device is operated in receiving mode is generally about 15mA, and with RF device work in 1 second 4 times, each operating time is that 5mS calculates: the average current that the RF device consumes=(4*5*15)/1000=0.3mA=300uA.The mobile phone of selling on the open market; Standby current is generally all in 10mA, if be that 6mA calculates with average standby current, after radio frequency smart card has increased the RF smart card module; The current drain that increases does not influence the stand-by time of battery of mobile phone basically less than 5% of former stand-by power consumption.Because the further reduction of power consumption can also promote mobile phone and radio frequency smart card fitting percentage.Content of the present invention can make the user satisfaction of this product of radio frequency smart card be improved.
It is understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection range that all should belong to claim of the present invention with distortion.
Claims (6)
1. a radio frequency smart card comprises MCU and radio-frequency module, it is characterized in that: said radio frequency smart card also comprises timer, is used under Preset Time or pattern, the MCU that is in halted state being waken up.
2. radio frequency smart card according to claim 1 is characterized in that: said timer is integrated on MCU or the radio-frequency module or is element independently.
3. radio frequency smart card according to claim 1 is characterized in that: the voltage signal that output changed when radio-frequency module received data, the voltage signal of said variation wakes said MCU up as the external interrupt signal of MCU.
4. the control method of a radio frequency smart card as claimed in claim 1, it is characterized in that: this method comprises the steps:
A: the good frequency-hopping method of software setting, carry out initialization to radio-frequency devices;
B:MCU drives radio-frequency module and gets into the Data Receiving pattern, after MCU sets outside arousal function and low-power consumption timer arousal function, gets into shutdown mode;
C: if radio-frequency module receives data, wake MCU up, after MCU is waken up, proceed to step e through the external interrupt wakeup function;
D: radio-frequency module does not receive data, can not wake MCU up, in such cases, after low-power consumption timer timing arrives, wakes MCU up, after MCU is waken up, proceeds to next procedure;
E:MCU is waken up, according to predefined software frequency-hopping method, resets the receiving channels of next radio-frequency module, gets back to step B.
5. the control method of radio frequency smart card as claimed in claim 4; It is characterized in that: in step B; When all preset receiving channelss are all intercepted, been scanned and do not receive data, MCU resets the low-power consumption timer, gets into park mode; In this pattern, radio-frequency devices also gets into standby mode.
6. the control method of radio frequency smart card as claimed in claim 5 is characterized in that: the park mode time of time of reception and radio frequency smart card through each channel of software control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110403807.6A CN102801871B (en) | 2011-12-07 | 2011-12-07 | Radio frequency smart card and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110403807.6A CN102801871B (en) | 2011-12-07 | 2011-12-07 | Radio frequency smart card and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102801871A true CN102801871A (en) | 2012-11-28 |
| CN102801871B CN102801871B (en) | 2014-01-22 |
Family
ID=47200828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110403807.6A Active CN102801871B (en) | 2011-12-07 | 2011-12-07 | Radio frequency smart card and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102801871B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105307251A (en) * | 2015-11-13 | 2016-02-03 | 罗中良 | Low-power-consumption Internet of Things module and control method thereof |
| CN105322977A (en) * | 2015-11-10 | 2016-02-10 | 上海十贝电子科技有限公司 | Low-power-consumption data receiving device and method for active RFID tag |
| CN105511345A (en) * | 2015-11-30 | 2016-04-20 | 罗中良 | Zigbee IOT (Internet of Things) module and low-power-consumption control method therefor |
| CN106228098A (en) * | 2016-07-12 | 2016-12-14 | 华立科技股份有限公司 | Electric energy meter radio-frequency module low-power consumption inspection X 2 method |
| CN112055404A (en) * | 2020-10-15 | 2020-12-08 | 力同科技股份有限公司 | Communication device and standby method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5794137A (en) * | 1995-07-17 | 1998-08-11 | Ericsson Inc. | Method for increasing stand-by time in portable radiotelephones |
| EP1677424A2 (en) * | 2005-01-04 | 2006-07-05 | Samsung Electronics Co., Ltd. | Apparatus and method for reducing electric power consumption in mobile communication terminal |
| CN101727599A (en) * | 2008-10-30 | 2010-06-09 | 国民技术股份有限公司 | Software method for reducing standby power consumption of radio frequency SIM card |
| CN101742619A (en) * | 2008-11-06 | 2010-06-16 | 国民技术股份有限公司 | Method for reducing stand-by power consumption of radio-frequency SIM (subscriber identity module) card by sequential trigger |
-
2011
- 2011-12-07 CN CN201110403807.6A patent/CN102801871B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5794137A (en) * | 1995-07-17 | 1998-08-11 | Ericsson Inc. | Method for increasing stand-by time in portable radiotelephones |
| EP1677424A2 (en) * | 2005-01-04 | 2006-07-05 | Samsung Electronics Co., Ltd. | Apparatus and method for reducing electric power consumption in mobile communication terminal |
| CN101727599A (en) * | 2008-10-30 | 2010-06-09 | 国民技术股份有限公司 | Software method for reducing standby power consumption of radio frequency SIM card |
| CN101742619A (en) * | 2008-11-06 | 2010-06-16 | 国民技术股份有限公司 | Method for reducing stand-by power consumption of radio-frequency SIM (subscriber identity module) card by sequential trigger |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105322977A (en) * | 2015-11-10 | 2016-02-10 | 上海十贝电子科技有限公司 | Low-power-consumption data receiving device and method for active RFID tag |
| CN105307251A (en) * | 2015-11-13 | 2016-02-03 | 罗中良 | Low-power-consumption Internet of Things module and control method thereof |
| CN105511345A (en) * | 2015-11-30 | 2016-04-20 | 罗中良 | Zigbee IOT (Internet of Things) module and low-power-consumption control method therefor |
| CN105511345B (en) * | 2015-11-30 | 2019-02-26 | 惠州爱镝威电气有限公司 | A kind of Zigbee Internet of Things module and its Low-power-consumptiocontrol control method |
| CN106228098A (en) * | 2016-07-12 | 2016-12-14 | 华立科技股份有限公司 | Electric energy meter radio-frequency module low-power consumption inspection X 2 method |
| CN112055404A (en) * | 2020-10-15 | 2020-12-08 | 力同科技股份有限公司 | Communication device and standby method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102801871B (en) | 2014-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101739583B (en) | Radio frequency SIM card, radio frequency card reader and magnetic induction control method for radio frequency communication | |
| CN109690574A (en) | Method and apparatus for the access of code-on-demand migration equipment | |
| CN102801871B (en) | Radio frequency smart card and control method thereof | |
| CN105050025A (en) | Awakening method and device based on low-power-consumption Bluetooth radio frequency | |
| WO2010048857A1 (en) | Software method for reducing standing-by power consumption of radio frequency sim card | |
| CN101742619A (en) | Method for reducing stand-by power consumption of radio-frequency SIM (subscriber identity module) card by sequential trigger | |
| WO2010037330A1 (en) | Method for reducing the power consumption of rf sim card on the waiting mode | |
| CN101969510A (en) | Method, equipment and system for automatically adjusting mobile phone state | |
| CN102957811B (en) | Radio frequency subscriber identity module (SIM) card with regular awakening function and implementation method of card | |
| CN103857021B (en) | Control method, blue-tooth device and the electronic installation of blue-tooth device | |
| CN110568919B (en) | Device for reducing chip power consumption | |
| CN112232463B (en) | Low-power-consumption RFID read-write system and method | |
| CN103209466A (en) | Method and device for receiving paging channel message | |
| CN110268754A (en) | A kind of method, smart machine and storage medium adjusting wakeup frequency | |
| CN113141571A (en) | UWB communication device and corresponding operating method | |
| CN102256345A (en) | Low-power consumption parallel processing implementation method for high-frequency wireless smart card | |
| CN113242081B (en) | Intelligent terminal based on satellite communication | |
| US9841804B2 (en) | Clocking a processor | |
| CN105426949B (en) | A kind of low-power consumption timing wake-up method and apparatus | |
| CN101369318A (en) | Energy-saving operation method for multi-interface card and control circuit thereof | |
| CN103024878A (en) | Low-energy-consumption wireless communication method | |
| CN107368764B (en) | Electromagnetic coupling reader | |
| CN102467678B (en) | Radio-frequency subscriber identity module (SIM) card with double-frequency communication mechanism | |
| CN206532318U (en) | A kind of active RF card and its system with dormancy awakening function | |
| CN202049517U (en) | High frequency wireless intelligent card suitable for wide voltage scope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518055 1407 floor, 14 floor, Fuguang business building, 1 Nanshan District Road, Taoyuan, Shenzhen, Guangdong Patentee after: Shenzhen Bureau of Polytron Technologies Inc Address before: 301401, building six, building B, No.1 building, No.1 Industrial Road, Nanshan District, Guangdong, Shenzhen, 518055 Patentee before: Shenzhen Zhongke Xunlian Technology Co., Ltd |