CN105322977B - A kind of active RFID tag low power consumption data reception device and its method - Google Patents
A kind of active RFID tag low power consumption data reception device and its method Download PDFInfo
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- CN105322977B CN105322977B CN201510759888.1A CN201510759888A CN105322977B CN 105322977 B CN105322977 B CN 105322977B CN 201510759888 A CN201510759888 A CN 201510759888A CN 105322977 B CN105322977 B CN 105322977B
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Abstract
The invention provides a kind of active RFID tag low power consumption data reception device and its method, including single-chip microcomputer, external chip, external chip is connected by SPI/I2C interfaces, data effective port, data clock port and data stream port with single-chip microcomputer.When rising edge occurs in data effective port level, single-chip microcomputer is waken up so that enabled behind data clock port, single-chip microcomputer enters back into park mode；When to data clock port output level rising edge, single-chip microcomputer is waken up, the single-chip microcomputer enters park mode after preserving 1 data in data flow.In BIT data procedures are received, single-chip microcomputer working time dutycycle is 20%~30%, and actual power loss is reduced to as the 20%~30% of original power consumption, realizes the communication process that single-chip microcomputer carries out low-power consumption with external chip.
Description
Technical field
The present invention provides a kind of active RFID tag low power consumption data reception device and its method, more particularly to active RFID
Label low power consumption data receives field.
Background technology
China RFID industry experienced the growth stage of one section of high speed in past several years, start within 2015 so far, in
State's RFID industries will again go into the stage of Rapid Expansion, it is contemplated that market growth rate by from current 25% or so lifting to
More than 30%.
Compared with passive RFID technology, active RFID technology has unrivaled advantage, and such as identification distance is remote, transmission number
According to amount is big, small transmission power, reliability and compatibility it is good etc..In the near future, active RFID will be applied even more extensively
Into our daily life, a convenient, efficient, ubiquitous perception net is formed.But, also there is power consumption in active RFID
One of the defect such as higher, the key factor being widely used as restriction active RFID technology.Therefore, power problemses have been solved
It is extremely urgent！
The content of the invention
Present invention is mainly used for the problem of active RFID power consumption is too high is overcome, there is provided a kind of active RFID tag low-power consumption number
According to reception device and its method.
The technical solution of the present invention：
The invention provides a kind of active RFID tag low power consumption data reception device, including：External chip and single-chip microcomputer；
The single-chip microcomputer (MCU) passes through SPI/I2C interfaces, data effective port, data clock port, data stream port and external chip
Connection；
The external chip is used to：
When not being responsive to RFID tag feedack, outputs level signals to the data effective port
When responding RFID tag feedack：
When receiving information, and verify it after useful signal, to change the level letter exported to the data effective port
Number；Then：
The high/low level signal of predeterminated frequency is exported to the data clock port, while by the information received with phase
The traffic spike that should be matched reaches the data stream port；
After traffic spike is transferred, the level signal exported to the data clock port no longer changes；
The single-chip microcomputer is used to：
After start, data effective port is enabled, into park mode；
Rising edge/trailing edge that the external chip feeds back is responsive to by the data effective port, is waken up, enables
The data clock port, subsequently into park mode；Otherwise, park mode is kept；
The external chip feedback level is responsive to for high level/low level situation by the data effective port
Under：
The rising edge occurred is fed back by the data clock port responses to the external chip, is waken up, number is preserved
According to after the n-bit data in stream enter park mode；Otherwise, park mode is kept；
The level of the data clock port responses keeps constant when exceeding setting time, and the data to preservation are decoded
And storage.
The single-chip microcomputer further enters park mode to preserve after 1 data in data flow.
The active RFID tag low power consumption data reception device, wherein data effective port, data clock port, data
Flow port is the component of external chip.
Present invention also offers a kind of SCM Based active RFID tag low power consumption data method of reseptance, including it is following
Step：
S0：Single-chip microcomputer is provided；The single-chip microcomputer passes through SPI/I2C interfaces, data effective port, data clock port, number
It is connected according to flow port with external chip；
After the single-chip microcomputer start, into step S2；
S2:Enable after the data effective port, the single-chip microcomputer enters park mode；
S3:By responding the change of the data effective port level, the single-chip microcomputer is waken up, into step S4；It is no
Then, the single-chip microcomputer keeps park mode；
S4：Enable behind the data clock port, the single-chip microcomputer enters park mode, into step S5；
S5：By responding the data clock port level rising edge, single-chip microcomputer is waken up, into step S6；Otherwise, institute
State single-chip microcomputer and keep park mode；
S6：The single-chip microcomputer enters after preserving the n-bit data in the data flow transmitted by the data stream port
Park mode；
S7：Repeat step S5-S6, until keeping constant by the level of the data clock port exceedes setting time
When, the single-chip microcomputer is decoded and stored to the data of preservation.
After the single-chip microcomputer start, before the step S2, in addition to：
The single-chip microcomputer completes initialization, into holding state；
The single-chip microcomputer implements the step S2 in the holding state.
In the step S3, by responding the rising edge of the data effective port level, the single-chip microcomputer is waken up,
Into step S4.
In the step S6, the single-chip microcomputer enters park mode after preserving 1 data in data flow
Present invention also offers a kind of active RFID tag low power consumption data method of reseptance based on external chip, including such as
Lower step：
S10：External chip is provided, the external chip passes through SPI/I2C interfaces, data effective port, data clock end
Mouth, data stream port and single-chip microcomputer are connected；
S20：The external chip is to the data effective port outputs level signals；
S30：Respond the information of the RFID tag RF FEEDBACK；It is verified after useful signal, to change to the data
The level signal of effective port output；
S40：The high/low level signal of predeterminated frequency is exported to the data clock port, while by the information received
The data stream port is reached with the traffic spike accordingly matched；Until traffic spike is transferred, into step S50；
S50：The level signal exported to the data clock port no longer changes.
In the step S20, the external chip exports low level to the data effective port；
In the step S30, change the level signal exported to the data effective port and further rise for output
Edge.
Beneficial effects of the present invention：
In BIT data procedures are received, the single-chip microcomputer working time, dutycycle was 20%~30% compared with Normal practice,
Actual power loss is reduced to the 20%~30% of original power consumption.
Brief description of the drawings
Fig. 1 is the system block diagram of one embodiment of the invention；
Fig. 2 is the workflow diagram of one embodiment of the invention；
Fig. 3 is the working timing figure of one embodiment of the invention.
Embodiment
Single-chip microcomputer (MCU) uses asynchronous communication meanses with external chip communication interface；
After external chip response external radiofrequency signal, meeting active transmission real time data, and received by single-chip microcomputer；
Communication physical port includes SPI/I2C interfaces, data effective port, data clock port and data stream port.
When single-chip microcomputer enters park mode, external crystal-controlled oscillation failure of oscillation, CPU, timer, serial port it is wholly off it is middle make, only
External interrupt works on.The instruction for making single-chip microcomputer enter park mode refers to the last item performed as single-chip microcomputer before dormancy
Order, into after park mode, the data in data storage and special function register that chip Program is not directed to all will
Keep initial value.It can be triggered or be triggered by trailing edge by external interrupt low level and interrupted or hardware reset mode wake-up single-chip microcomputer,
It should be noted that when waking up single-chip microcomputer using interruption, program is continued to run with original stopping.
A kind of method that active RFID tag low power consumption data is received, comprises the following steps：
1. initialized after system electrification, configure parameters, after the completion of enter holding state：Enable data live end
Mouthful, single-chip microcomputer enters park mode, and internal clocking stops.
2. external chip is responded to external radio-frequency signal, data effective port can produce high level.When data have
When imitating port generation high level rising edge, single-chip microcomputer is waken up, and is then enabled behind data clock port, single-chip microcomputer is reentered not
Sleep mode, internal clocking stops.
3. when high level rising edge occurs in data clock port, single-chip microcomputer is waken up.Single-chip microcomputer preserves 1 in data flow
Position data (1bit), subsequently into park mode.
4. when data clock port level no longer changes, during more than setting time, then judge the data of this event response
It is over.
5. single-chip microcomputer is decoded to the data received, stored, after the completion of, come back to holding state.
The embodiment of the present invention is as follows：
There is provided a kind of SCM Based active RFID tag low power consumption data as shown in Figure 1 to Figure 3 for embodiment one
Method of reseptance, comprises the following steps：
S0：Single-chip microcomputer is provided；The single-chip microcomputer passes through SPI/I2C interfaces, data effective port, data clock port, number
It is connected according to flow port with external chip；
After the single-chip microcomputer start, into step S2；
S2:Enable after the data effective port, the single-chip microcomputer enters park mode；
S3:By responding the change of the data effective port level, the single-chip microcomputer is waken up, into step S4；It is no
Then, the single-chip microcomputer keeps park mode；
S4：Enable behind the data clock port, the single-chip microcomputer enters park mode, into step S5；
S5：By responding the data clock port level rising edge, single-chip microcomputer is waken up, into step S6；Otherwise, institute
State single-chip microcomputer and keep park mode；
S6：The single-chip microcomputer enters after preserving the n-bit data in the data flow transmitted by the data stream port
Park mode；
S7：Repeat step S5-S6, until keeping constant by the level of the data clock port exceedes setting time
When, the single-chip microcomputer is decoded and stored to the data of preservation.
After the single-chip microcomputer start, before the step S2, in addition to：
The single-chip microcomputer completes initialization, into holding state；
The single-chip microcomputer implements the step S2 in the holding state.
In the step S3, by responding the rising edge of the data effective port level, the single-chip microcomputer is waken up,
Into step S4.
In the step S6, the single-chip microcomputer enters park mode after preserving 1 data in data flow
There is provided a kind of active RFID tag low-power consumption number based on external chip as shown in Figure 1 to Figure 3 for embodiment two
According to method of reseptance, comprise the following steps：
S10：External chip is provided, the external chip passes through SPI/I2C interfaces, data effective port, data clock end
Mouth, data stream port and single-chip microcomputer are connected；
S20：The external chip is to the data effective port outputs level signals；
S30：Respond the information of the RFID tag RF FEEDBACK；It is verified after useful signal, to change to the data
The level signal of effective port output；
S40：The high/low level signal of predeterminated frequency is exported to the data clock port, while by the information received
The data stream port is reached with the traffic spike accordingly matched；Until traffic spike is transferred, into step S50；
S50：The level signal exported to the data clock port no longer changes.
In the step S20, the external chip exports low level to the data effective port；
In the step S30, change the level signal exported to the data effective port and further rise for output
Edge.
There is provided a kind of active RFID tag low power consumption data reception device, bag as shown in Figure 1 to Figure 3 for embodiment three
Include：External chip and single-chip microcomputer；The single-chip microcomputer passes through SPI/I2C interfaces, data effective port, data clock port, data
Flow port is connected with external chip；
The external chip is used to：
When not being responsive to RFID tag feedack, outputs level signals to the data effective port
When responding RFID tag feedack：
When receiving information, and verify it after useful signal, to change the level letter exported to the data effective port
Number；Then：
The high/low level signal of predeterminated frequency is exported to the data clock port, while by the information received with phase
The traffic spike that should be matched reaches the data stream port；
After traffic spike is transferred, the level signal exported to the data clock port no longer changes；
The single-chip microcomputer is used to：
After start, data effective port is enabled, into park mode；
Rising edge/low level that the external chip feeds back is responsive to by the data effective port, is waken up, enables
The data clock port, subsequently into park mode；Otherwise, park mode is kept；
The external chip feedback level is responsive to for high level/low level situation by the data effective port
Under：
The rising edge occurred is fed back by the data clock port responses to the external chip, is waken up, number is preserved
According to after the n-bit data in stream enter park mode；Otherwise, park mode is kept；
The level of the data clock port responses keeps constant when exceeding setting time, and the data to preservation are decoded
And storage.
The single-chip microcomputer further enters park mode to preserve after 1 data in data flow.
The SPI/I2C interfaces, data effective port, data clock port, data stream port are the external chips
Component.
In BIT data procedures are received, the single-chip microcomputer working time, dutycycle was 20%~30% compared with Normal practice,
Actual power loss is reduced to the 20%~30% of original power consumption, realizes the communication that single-chip microcomputer carries out low-power consumption with external chip
Journey.
Claims (9)
1. a kind of SCM Based active RFID tag low power consumption data method of reseptance, it is characterised in that：Comprise the following steps：
S0：Single-chip microcomputer is provided；The single-chip microcomputer passes through data effective port, data clock port, data stream port and external core
Piece is connected；
After the single-chip microcomputer start, into step S2；
S2:Enable after the data effective port, the single-chip microcomputer enters park mode；
S3:By responding the change of the data effective port level, the single-chip microcomputer is waken up, into step S4；Otherwise, institute
State single-chip microcomputer and keep park mode；
S4：Enable behind the data clock port, the single-chip microcomputer enters park mode, into step S5；
S5：By responding the data clock port level rising edge, single-chip microcomputer is waken up, into step S6；Otherwise, the list
Piece machine keeps park mode；
S6：The single-chip microcomputer enters dormancy after preserving the n-bit data in the data flow transmitted by the data stream port
Pattern；
S7：Repeat step S5-S6, when the level holding by the data clock port is constant exceedes setting time, institute
State single-chip microcomputer the data of preservation are decoded and stored.
2. SCM Based active RFID tag low power consumption data method of reseptance as claimed in claim 1, it is characterised in that：Institute
State after single-chip microcomputer start, before the step S2, in addition to：
The single-chip microcomputer completes initialization, into holding state；
The single-chip microcomputer implements the step S2 in the holding state.
3. SCM Based active RFID tag low power consumption data method of reseptance as claimed in claim 1, it is characterised in that：
In the step S3, by responding the rising edge of the data effective port level, the single-chip microcomputer is waken up, into step
S4。
4. SCM Based active RFID tag low power consumption data method of reseptance as claimed in claim 1, it is characterised in that：
In the step S6, the single-chip microcomputer enters park mode after preserving 1 data in data flow.
5. a kind of active RFID tag low power consumption data method of reseptance based on external chip, it is characterised in that：Including following step
Suddenly：
S10：External chip is provided, the external chip passes through data effective port, data clock port, data stream port and list
Piece machine is connected；
S20：The external chip is to the data effective port outputs level signals；
S30：Respond the information of the RFID tag RF FEEDBACK；It is verified after useful signal, to change effective to the data
The level signal of port output；
S40：The high/low level signal of predeterminated frequency is exported to the data clock port, while by the information received with phase
The traffic spike that should be matched reaches the data stream port；Until traffic spike is transferred, into step S50；
S50：The level signal exported to the data clock port no longer changes.
6. the active RFID tag low power consumption data method of reseptance as claimed in claim 5 based on external chip, it is characterised in that：
In the step S20, the external chip exports low level to the data effective port；
In the step S30, it is further output rising edge to change the level signal exported to the data effective port.
7. a kind of active RFID tag low power consumption data reception device, it is characterised in that including：External chip and single-chip microcomputer；It is described
Single-chip microcomputer is connected by data effective port, data clock port, data stream port and external chip；
The external chip is used to：
When not being responsive to RFID tag feedack, outputs level signals to the data effective port；
When responding RFID tag feedack：
When receiving information, and verify it after useful signal, to change the level signal exported to the data effective port；So
Afterwards：
The high/low level signal of predeterminated frequency is exported to the data clock port, while by the information received with corresponding
The traffic spike matched somebody with somebody reaches the data stream port；
After traffic spike is transferred, the level signal exported to the data clock port no longer changes；
The single-chip microcomputer is used to：
After start, data effective port is enabled, into park mode；
Rising edge/trailing edge that the external chip feeds back is responsive to by the data effective port, is waken up, is enabled described
Data clock port, subsequently into park mode；Otherwise, park mode is kept；
The external chip feedback level is responsive to in the case of high level/low level by the data effective port：
The rising edge occurred is fed back by the data clock port responses to the external chip, is waken up, data flow is preserved
In n-bit data after enter park mode；Otherwise, park mode is kept；
The level of the data clock port responses keeps constant when exceeding setting time, and the data to preservation are decoded and deposited
Storage.
8. active RFID tag low power consumption data reception device as claimed in claim 7, it is characterised in that：The single-chip microcomputer enters
One step enters park mode to preserve after 1 data in data flow.
9. the active RFID tag low power consumption data reception device as described in claim 7 or claim 8, wherein data are effective
Port, data clock port, data stream port are the components of external chip.
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| CN107422874B (en) * | 2017-07-24 | 2023-10-24 | 广东迪控电子科技有限公司 | Multifunctional key communication method |
| CN109033915A (en) * | 2018-08-06 | 2018-12-18 | 上海易钥电子科技有限公司 | A kind of storable double frequency temperature label of low-power consumption |
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| 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 |
| CN102801871B (en) * | 2011-12-07 | 2014-01-22 | 深圳中科讯联科技有限公司 | Radio frequency smart card and control method thereof |
| CN103476096A (en) * | 2012-06-07 | 2013-12-25 | 中兴通讯股份有限公司 | Active radio frequency tag communication method and active radio frequency tag |
| CN103412634B (en) * | 2013-07-30 | 2016-08-10 | 深圳市汇顶科技股份有限公司 | The MCU Rouser of a kind of SOC and method |
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