CN108597098B - Energy-saving method and device for RFID (radio frequency identification) emitter and POS (point of sale) machine - Google Patents
Energy-saving method and device for RFID (radio frequency identification) emitter and POS (point of sale) machine Download PDFInfo
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- CN108597098B CN108597098B CN201810188287.3A CN201810188287A CN108597098B CN 108597098 B CN108597098 B CN 108597098B CN 201810188287 A CN201810188287 A CN 201810188287A CN 108597098 B CN108597098 B CN 108597098B
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- Prior art keywords
- rfid
- card
- emitter
- magnetic field
- field emission
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
- G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
- G07F7/0873—Details of the card reader
- G07F7/0893—Details of the card reader the card reader reading the card in a contactless manner
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10118—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the sensing being preceded by at least one preliminary step
- G06K7/10128—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the sensing being preceded by at least one preliminary step the step consisting of detection of the presence of one or more record carriers in the vicinity of the interrogation device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
- G06K7/10415—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM
- G06K7/10425—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM the interrogation device being arranged for interrogation of record carriers passing by the interrogation device
Abstract
The invention discloses an energy-saving method and device for an RFID (radio frequency identification) emitter and a POS (point-of-sale) machine, wherein the method comprises the steps of identifying the magnetic field emission intensity of the RFID emitter, comparing the change value of the magnetic field emission intensity with a preset threshold value, and determining whether an RFID card is close to an identification area of the RFID emitter or not; when no RFID card is close to the RFID card, the magnetic field emission intensity of the RFID emitter is reduced; when an RFID card approaches, the magnetic field emission intensity of the RFID emitter is increased, and the card reading is identified. The device comprises an identification module and a control module, and the POS machine is provided with the RFID emitter energy-saving device. Because the normal card reading time is very short, the non-contact power consumption can be reduced by more than 90%, and meanwhile, because the card can be controlled to be close to a specified area to start communication with the card, the problems of mistaken card reading and communication errors caused by starting communication when the card is far away can be effectively avoided.
Description
Technical Field
The invention relates to the technical field of POS machines, in particular to an energy-saving method and device for an RFID emitter and a POS machine.
Background
For the RFID/non-connection working mechanism used by the current POS, the transmitting end continuously transmits a strong magnetic field, and when the card approaches to a magnetic field area, power is supplied to generate an interference magnetic field and the interference magnetic field is changed back to communication.
The card is driven to convert magnetic energy into electric energy and then the received electric energy is converted into the magnetic energy to interfere a magnetic field, so that more energy is needed, and for handheld equipment and other equipment with high energy consumption requirements, the power consumption is overlarge in a transmitting state for a long time, the actual useful use time is only short time of playing the card, more electric energy is consumed unnecessarily, the standby time of handheld equipment can be influenced, and in addition, the external radiation interference caused by opening a non-connection circuit for a long time is also strong. In addition, the emitted magnetic field is strong to meet the requirements of different cards, and when the card is positioned on the side or at a far position, card information can be sent back mistakenly.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide an energy saving method and apparatus for an RFID transmitter, and a POS machine, which can reduce unnecessary power consumption and prevent erroneous recognition.
The technical scheme adopted by the invention is as follows: an energy-saving method for an RFID (radio frequency identification) emitter comprises the steps of identifying the magnetic field emission intensity of the RFID emitter, comparing the change value of the magnetic field emission intensity with a preset threshold value, and determining whether an RFID card is close to an identification area of the RFID emitter or not; when no RFID card is close to the RFID card, the magnetic field emission intensity of the RFID emitter is reduced; when an RFID card approaches, the magnetic field emission intensity of the RFID emitter is increased, and the card reading is identified.
An RFID transmitter power saving device comprising an identification module: a magnetic field emission strength for identifying the RFID emitter; a control module: comparing the change value of the magnetic field emission intensity with a preset threshold value, and determining whether an RFID card is close to an identification area of an RFID emitter;
when no card is close to the RFID reader, reducing the magnetic field emission intensity of the RFID emitter; when a card approaches, the magnetic field emission intensity of the RFID emitter is increased, and the card reading is identified.
Further, the control module comprises a single chip microcomputer, an ARM or an FPGA.
Furthermore, the identification module comprises an identification antenna and a rectification filter circuit, and the output end of the identification antenna is connected with the input end of the control module through the rectification filter circuit.
Further, the identification antenna and the transmitting antenna of the RFID transmitter are the same antenna.
A POS machine is provided with the RFID transmitter. The power consumption of the POS machine can be reduced, and the misrecognition card reading is prevented.
The invention has the beneficial effects that: the invention judges whether an RFID card is close to the identification area of the RFID emitter; when no RFID card is close to the RFID card, the magnetic field emission intensity of the RFID emitter is reduced; when an RFID card approaches, the magnetic field emission intensity of the RFID emitter is increased, and the card reading is identified. Because the normal card reading time is very short, the non-contact power consumption can be reduced by more than 90%, and meanwhile, because the card can be controlled to be close to a specified area to start communication with the card, the problems of mistaken card reading and communication errors caused by starting communication when the card is far away can be effectively avoided.
Drawings
The following further describes embodiments of the present invention with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of the interconnection of an RFID transmitter power saving device with an RFID in accordance with the present invention;
fig. 2 is a circuit schematic diagram of the rectifying-filtering circuit of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
An energy-saving method for an RFID (radio frequency identification) emitter comprises the steps of identifying the magnetic field emission intensity of the RFID emitter, comparing the change value of the magnetic field emission intensity with a preset threshold value, and determining whether an RFID card is close to an identification area of the RFID emitter or not; when no RFID card is close to the RFID card, the magnetic field emission intensity of the RFID emitter is reduced; when an RFID card approaches, the magnetic field emission intensity of the RFID emitter is increased, and the card reading is identified.
The problem that a large amount of electric energy is consumed when the RFID is in a transmitting state for a long time is avoided, the normal card reading time is very short, so that the non-contact power consumption can be reduced by over 90%, and meanwhile, the card can be controlled to be close to a specified area to start communication with the RFID card, so that the problems of mistaken card reading and communication errors caused by the fact that the RFID card is far away from the specified area or is positioned on the side face to start communication can be effectively avoided.
As shown in fig. 1, an RFID transmitter power saving device includes an identification module: a magnetic field emission strength for identifying the RFID emitter; a control module: comparing the change value of the magnetic field emission intensity with a preset threshold value, and determining whether an RFID card is close to an identification area of an RFID emitter; when no card is close to the RFID reader, reducing the magnetic field emission intensity of the RFID emitter; when a card approaches, the magnetic field emission intensity of the RFID emitter is increased, and the card reading is identified. The control module comprises a single chip microcomputer, an ARM or an FPGA.
Further as a preferred implementation manner, the identification module includes an identification antenna and a rectification filter circuit, and an output end of the identification antenna is connected with an input end of the control module through the rectification filter circuit.
As shown in fig. 2, a rectifying and filtering circuit is shown, which includes a fifth diode D5, a sixth diode D6, a seventh diode D7, an eighth diode D8, a sixth capacitor C6, an eighth capacitor C8, a thirty-second resistor R32, a thirty-third resistor R33, a ninth capacitor C9, a fourth capacitor C4, a thirty-fourth resistor R34, a thirty-sixth resistor R36, a thirty-eleventh resistor R31, a fifth diode D5, a sixth diode D6, a seventh diode D7, and an eighth diode D8, a sixth capacitor C6 and an eighth capacitor C8 are connected in series with two ends of an identification antenna, a fourteenth resistor R34, a thirty-sixth resistor R36, a fifth diode D5, a sixth diode D5, a seventh diode D5, and an eighth rectifying diode D5 are connected in series with an output port of the rectifying and the ninth rectifying bridge is connected in series with the input port C5, The fourth capacitor C4 and the thirty-fourth resistor R34 are connected in series with the thirty-sixth resistor R36 and the thirty-first resistor R31 to 2 output ports of the rectifier bridge, a signal output port MAG-STR is connected to the junction of the thirty-sixth resistor R36 and the thirty-first resistor R31, and the signal output port MAG-STR is connected with the input end of the control module.
An identification antenna is added on the basis of the original RFID antenna or the original RFID antenna is shared to be compatible as the identification antenna, a matched circuit is added to convert alternating current signals received by the identification antenna into direct current voltage, and the RFID transmitting intensity at the moment is confirmed through voltage identification. The identification antenna has larger impedance and has little influence on RFID receiving. The loop antenna inside the contactless card when it is close to the field strength area of the RFID will increase the load on the RFID circuit and thus reduce the strength of the emitted magnetic field. At this time, the change of the field intensity can be converted into the change of the voltage through the identification antenna and the rectification filter circuit of the invention 1, and the voltage is identified by the main control end. Whether an RFID card approaches an RFID identification area can be confirmed through the change value/threshold value of the discrimination confirmation level. When no card is close to the RFID card, the control module controls the RFDI transmitter to reduce the magnetic field emission intensity of the RFID to a very low level, thereby greatly reducing energy loss and radiation. When the card is recognized to be close to the card reader, the emission intensity is increased, and the card reading is recognized. The invention can reduce the non-connection power consumption by more than 90% because the normal card reading time is very short, and can effectively avoid the problems of mistaken card reading and communication error caused by starting communication when the card is far away because the card can be controlled to approach to the appointed area to start the communication with the card.
A POS machine is provided with the RFID transmitter.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. An RFID transmitter economizer characterized in that: comprises that
An identification module: a magnetic field emission strength for identifying the RFID emitter;
a control module: comparing the change value of the magnetic field emission intensity with a preset threshold value, and determining whether an RFID card is close to an identification area of an RFID emitter;
when no RFID card is close to the RFID card, the magnetic field emission intensity of the RFID emitter is reduced; when an RFID card approaches, the magnetic field emission intensity of the RFID emitter is increased, and the card reading is identified;
the identification module comprises an identification antenna and a rectification filter circuit, the output end of the identification antenna is connected with the input end of the control module through the rectification filter circuit, the rectification filter circuit is used for converting the magnetic field emission intensity change value into a voltage change value, and whether an RFID card is close to an RFID identification area or not can be confirmed by comparing the change value of the level with a threshold value; the identification antenna and the transmitting antenna of the RFID transmitter are the same antenna.
2. The RFID transmitter power saving device of claim 1, wherein: the control module comprises a single chip microcomputer, an ARM or an FPGA.
3. A POS machine, its characterized in that: provided with an RFID transmitter power saving device as claimed in any one of claims 1 to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810188287.3A CN108597098B (en) | 2018-03-07 | 2018-03-07 | Energy-saving method and device for RFID (radio frequency identification) emitter and POS (point of sale) machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810188287.3A CN108597098B (en) | 2018-03-07 | 2018-03-07 | Energy-saving method and device for RFID (radio frequency identification) emitter and POS (point of sale) machine |
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| Publication Number | Publication Date |
|---|---|
| CN108597098A CN108597098A (en) | 2018-09-28 |
| CN108597098B true CN108597098B (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810188287.3A Active CN108597098B (en) | 2018-03-07 | 2018-03-07 | Energy-saving method and device for RFID (radio frequency identification) emitter and POS (point of sale) machine |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111967281A (en) * | 2020-07-09 | 2020-11-20 | 深圳市金溢科技股份有限公司 | CPC card and power management method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944959A (en) * | 2010-07-01 | 2011-01-12 | 北京泛在电子标签技术有限公司 | Wireless short distance communication method and system based on distance control |
| CN203491375U (en) * | 2013-08-23 | 2014-03-19 | 速码波科技股份有限公司 | Wireless reader apparatus |
| CN103778396A (en) * | 2013-05-21 | 2014-05-07 | 深圳市证通电子股份有限公司 | RFID system and method for automatically adjusting emission field intensity thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080078100A (en) * | 2007-02-22 | 2008-08-27 | 권혁숙 | Wireless bar code and rfid scanner for cellular phone |
| CN101770598B (en) * | 2008-12-30 | 2012-07-25 | 刘俊勇 | Active frequency identification label, system and identification method |
| CN106682554B (en) * | 2016-11-29 | 2019-08-16 | 大唐微电子技术有限公司 | A kind of Contactless IC Card Reader and its implementation |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944959A (en) * | 2010-07-01 | 2011-01-12 | 北京泛在电子标签技术有限公司 | Wireless short distance communication method and system based on distance control |
| CN103778396A (en) * | 2013-05-21 | 2014-05-07 | 深圳市证通电子股份有限公司 | RFID system and method for automatically adjusting emission field intensity thereof |
| CN203491375U (en) * | 2013-08-23 | 2014-03-19 | 速码波科技股份有限公司 | Wireless reader apparatus |
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| CN108597098A (en) | 2018-09-28 |
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