WO2015101120A1 - 一种终端及近距离通信的方法 - Google Patents
一种终端及近距离通信的方法 Download PDFInfo
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- WO2015101120A1 WO2015101120A1 PCT/CN2014/092236 CN2014092236W WO2015101120A1 WO 2015101120 A1 WO2015101120 A1 WO 2015101120A1 CN 2014092236 W CN2014092236 W CN 2014092236W WO 2015101120 A1 WO2015101120 A1 WO 2015101120A1
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- low frequency
- terminal
- frequency magnetic
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- magnetic signal
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- 238000004891 communication Methods 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 53
- 230000006698 induction Effects 0.000 claims abstract description 22
- 230000001939 inductive effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 17
- 230000005540 biological transmission Effects 0.000 description 7
- 238000001914 filtration Methods 0.000 description 7
- 230000003068 static effect Effects 0.000 description 7
- 238000004804 winding Methods 0.000 description 6
- 239000000696 magnetic material Substances 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
- H04B5/26—Inductive coupling using coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
- H04M1/72412—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories using two-way short-range wireless interfaces
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/04—Details of telephonic subscriber devices including near field communication means, e.g. RFID
Definitions
- the present invention relates to the field of short-range communication, and in particular, to a terminal and a method for short-range communication.
- intelligent terminals are very common. How to use the existing resources of intelligent terminals to achieve close-range data communication with intelligent terminals is currently a hot spot.
- RFID-SIM technology enables communication with the reader through the RF channel of the SIM card or SD card by inserting a SIM card or an SD card with an RFID-SIM function on the smart terminal. This method requires the user to replace the SIM card. , bringing about an increase in user costs.
- the NFC terminal is based on the ordinary intelligent terminal, adding the NFC chip and supporting components, such as the coil and the SIM card with the SWP function interface, and the reader is required to perform data through the RF channel. Communication, this method requires ordinary users to purchase customized NFC-enabled terminals and replace SIM cards, which brings high cost to users and complex industrial chain.
- the sound wave is used for data transmission communication, that is, the smart terminal microphone is used to receive the sound signal.
- the speaker is used to transmit the sound signal.
- This method is affected by the multipath and narrow frequency band in the sound transmission process, and the difference in the frequency response between the microphone and the speaker of the smart terminal, so that the communication effect is not good, for example, the communication has a strong directivity.
- the user experience is poor; there is also the use of the smart terminal's own camera and flash for data communication, that is, flash control work and no work to send data, the camera senses the light changes to receive data, this method is susceptible to the surrounding environment and occlusion Communication success rate and effect are relatively poor.
- the invention provides a terminal and a method for short-distance communication, which solves the problem that in the case of short-distance communication, the terminal needs to be modified to realize short-range communication, thereby increasing the user cost.
- the present invention adopts the following technical solutions:
- a terminal the terminal itself has a low frequency magnetic induction module, and further includes:
- a trigger module for generating a trigger instruction
- the low frequency magnetic induction module is configured to sense an external low frequency magnetic signal according to a trigger instruction generated by the trigger module;
- a determining module configured to determine whether the low frequency magnetic signal sensed by the low frequency magnetic induction module carries data information
- the first processing module is configured to process the low frequency magnetic signal to obtain data information carried by the determining module when the determining module determines to be YES.
- the data information is a radio frequency communication parameter; the terminal further includes:
- the first radio frequency module is configured to establish radio frequency communication with the peer device according to the radio frequency communication parameter acquired by the first processing module.
- the frequency of the low frequency magnetic signal induced by the low frequency magnetic induction module is 10 Hz to 1 MHz.
- the intensity of the low frequency magnetic signal induced by the low frequency magnetic induction module is stepwise and higher than the geomagnetic intensity.
- a method of short-range communication comprising:
- the low frequency magnetic signal is processed to obtain the data information carried by the low frequency magnetic signal.
- the data information is a radio frequency communication parameter; and the method further includes:
- a terminal comprising:
- a second processing module configured to generate data information
- a low frequency magnetic emission module configured to generate a low frequency magnetic signal carrying data information generated by the second processing module, and transmit the low frequency magnetic signal.
- the data information is a radio frequency communication parameter; the terminal further includes:
- the second radio frequency module is configured to monitor the radio frequency signal transmitted by the peer device and establish radio frequency communication with the peer device.
- the frequency of the low frequency magnetic signal emitted by the magnetic transmitting module is 10 Hz to 1 MHz.
- the intensity of the low frequency magnetic signal emitted by the magnetic emission module is stepwise and higher than the geomagnetic intensity.
- the magnetic field of the magnetic emission module for transmitting the low frequency magnetic signal is a one-dimensional unidirectional magnetic field, a two-dimensional planar magnetic field or a three-dimensional magnetic field.
- a method of short-range communication comprising:
- the first terminal generates data information; generates a low frequency magnetic signal carrying the data information, and transmits the low frequency magnetic signal;
- the second terminal generates a trigger instruction, and according to the trigger instruction, senses an external low frequency magnetic signal; determines whether the low frequency magnetic signal carries data information; and when the determination is yes, processes the low frequency magnetic signal to obtain data carried thereby information.
- the data information is a radio frequency communication parameter; and the method further includes:
- the first terminal establishes radio frequency communication with the second terminal according to the acquired radio frequency communication parameter
- the second terminal monitors a radio frequency signal transmitted by the first terminal, and establishes radio frequency communication with the first terminal.
- the invention provides a terminal and a method for short-distance communication, which utilizes a low-frequency magnetic induction module of the terminal itself, thereby realizing communication in a close distance without changing or replacing the terminal, such as a coupon service of a shopping mall, a subway The advertisement push service, etc., the user can obtain relevant business data information only through the terminal, reduce the user cost, improve the stability, and reduce the promotion threshold because of having a large user base.
- FIG. 1 is a schematic structural diagram of a first terminal according to an embodiment of the present invention
- FIG. 2 is a schematic structural diagram of a first terminal with a radio frequency channel according to another embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a low frequency magnetic emission module in a first terminal according to an embodiment of the present invention
- FIG. 4 is a schematic diagram of a corresponding relationship between a current of a transmitting coil and a radiated magnetic field in a low frequency magnetic transmitting module in a first terminal according to an embodiment of the present invention
- FIG. 5 is a flow chart of a method for short-distance communication of a first terminal according to an embodiment of the present invention.
- FIG. 6 is a flowchart of a method for starting a radio channel operation by a first terminal according to an embodiment of the present invention
- FIG. 7 is a schematic structural diagram of a second terminal according to an embodiment of the present invention.
- FIG. 8 is a schematic structural diagram of a second terminal with a radio frequency channel according to another embodiment of the present invention.
- FIG. 9 is a schematic diagram of dimensions of a second terminal inducing a low frequency magnetic signal according to an embodiment of the present invention.
- FIG. 10 is a flowchart of a method for short-range communication of a second terminal according to an embodiment of the present invention.
- FIG. 11 is a flowchart of a method for starting a radio channel operation by a second terminal according to an embodiment of the present invention.
- FIG. 12 is a flowchart of a method for short-range communication according to an embodiment of the present invention.
- FIG. 13 is a schematic diagram of a short-range communication system according to an embodiment of the present invention.
- FIG. 1 is a schematic structural diagram of a first terminal according to an embodiment of the present invention. As shown in FIG. 1, the first terminal 1 includes:
- a second processing module 11 configured to generate data information
- the low frequency magnetic emission module 12 is configured to generate a low frequency magnetic signal carrying the data information generated by the second processing module 11 and transmit the low frequency magnetic signal.
- the second processing module 11 generates data information and processes the data information
- the second processing module 11 includes, but is not limited to, the sub-module 111, the modulation and coding sub-module 112, and the driver that are sequentially connected.
- the module 113, the main control sub-module 111 controls the working states of the modulation and coding sub-module 112 and the driving sub-module 113.
- the main control sub-module 111 generates data information that needs to be transmitted, and sends the data information to the tune.
- the coding sub-module 112 receives the data information sent by the main control sub-module 111, encodes and modulates the data information, and sends the data information to the driving sub-module 113.
- the driving sub-module 113 receives the modulation coding sub-module. 112.
- the encoded and modulated data information is sent, and the data information is power amplified, and the power amplified data information is sent to the low frequency magnetic emission module 12.
- the driving submodule 113 is also used for low frequency magnetic
- the transmitting module 12 is driven, and the low-frequency magnetic transmitting module 12 generates a low-frequency magnetic signal carrying the data information generated by the second processing module 11 through the transmitting coil, and transmits the low-frequency magnetic signal to the opposite device through a low-frequency alternating magnetic field method. .
- the data information can be data information such as a coupon service of the shopping mall, a push advertisement service of the subway, and the like, so that the fast data information transmission of the first terminal to the peer device can be realized, which is more convenient and faster than the scanning of the two-dimensional code, and can realize fast data communication or Conduct online transactions.
- FIG. 2 is a schematic structural diagram of a first terminal with a radio frequency channel, and the data may also be a radio frequency communication parameter.
- the first terminal 1 further includes a first radio frequency module 13 , and the main control submodule 111 The working state of the second radio frequency module 13 is also controlled.
- the first radio frequency module 13 establishes radio frequency communication with the peer device according to the obtained radio frequency communication parameter.
- the second processing module 11 generates the radio frequency communication parameter, and after performing the foregoing processing on the radio frequency communication parameter, generates a low frequency magnetic signal carrying the radio frequency communication parameter generated by the second processing module 11 through the low frequency magnetic emission module 12, and transmits the low frequency magnetic field.
- the second processing module 11 configures the second radio frequency module 13 according to the radio frequency communication parameter, and activates the second radio frequency module 13 to work.
- the second radio frequency module 13 transmits the radio frequency signal to the opposite end device. If the second RF module 13 monitors the radio frequency signal transmitted by the peer device, it establishes radio frequency communication with the peer device, otherwise enters the next round of establishing the connection process, and then transmits the low frequency magnetic signal to the peer device.
- the radio frequency communication parameters include, but are not limited to, information related to radio link operation, protocol information, and the like, and may be information such as a login password;
- the radio link working parameters include a radio frequency channel.
- the frequency information of the work, the matching communication address and the like, wherein the frequency information of the working of the radio frequency channel is a common working frequency band of the intelligent terminal, such as a Bluetooth frequency band, a wifi frequency band, a GSM frequency band, a CDMA frequency band, a TD-SCDMA frequency band, an LTE frequency band or EDGE band, etc.
- the modulation and coding sub-module 112 mainly implements modulation and coding of a baseband signal, wherein the modulation mode can be implemented by a modulation circuit, and the modulation power is implemented.
- the path may be one of a plurality of modulation circuits such as FSK (Frequency Shift Keying) modulation, PSK (Phase Shift Keying) modulation, ASK (Amplitude) modulation, or OOK modulation, and preferably, the modulation circuit is selected to be ASK (Amplitude) Modulation;
- the coding mode may be one of a plurality of coding modes such as Manchester code, differential Manchester code, return-to-zero code, non-return to zero code or no coding.
- the low-frequency magnetic emission module 12 may be a transmitting circuit formed by a ring-shaped air-core coil, or may be a toroidal coil wound around a magnetic material, and the magnetic material may be a ferrite, a strong magnet, or a magnetic steel. And other magnetic materials.
- the size of the low frequency magnetic emission module 12 is determined by rules or restrictions imposed by a particular application, such as square, circular, elliptical or irregular.
- 3 is a schematic structural diagram of the low-frequency magnetic emission module 12 in the first terminal, wherein the magnetic coil circuit 301 can be composed of a hollow wave coil 301, that is, the low-frequency magnetic wave transmitting module 12 is a transmitting circuit based on the annular air-core coil.
- the low-frequency magnetic transmitting module 12 After the air-core coil 301 is energized, the low-frequency magnetic transmitting module 12 emits a low-frequency magnetic signal 302.
- the energizing current in the transmitting coil in the transmitting circuit determines the magnetic field emission information change, the magnetic field strength, and the like, and the air-core coil 301 determines the magnetic field emission intensity;
- the magnetic material ferrite 304 is inserted into the air-core coil 303 to form a magnetic emission circuit, that is, the low-frequency magnetic emission module 12 is a transmitting circuit of a toroidal coil wound around the magnetic material. After the coil 303 is energized, the low-frequency magnetic emission is performed.
- the module 12 emits a low frequency magnetic signal 305, the energizing current in the transmitting coil in the transmitting circuit determines the magnetic field emission information change, the magnetic field strength, etc., and the coil 303 and the ferrite 304 jointly determine the magnetic field emission intensity.
- the energizing current flowing through the transmitting coil in the magnetic transmitting module 12 is stepwise, and the energizing current is proportional to the intensity of the radiated magnetic field of the coil. Therefore, the intensity of the low-frequency magnetic signal emitted by the magnetic transmitting module 12 is Stepwise, preferably, the intensity is 2 steps, 3 steps, 4 steps or 5 steps.
- 4 is a schematic diagram of the correspondence between the transmitting coil current and the radiated magnetic field in the first terminal, the waveform 401 is the operating current of the transmitting coil, and the waveform 402 is the magnetic field intensity variation reflected by the magnetic field radiated by the coil, and the current waveform 401 and the magnetic field strength waveform. 402 is consistent in phase and period.
- the low frequency magnetic signal strength is higher than the geomagnetic intensity.
- the winding method of the transmitting coil in the magnetic transmitting module 12 may be winding a coil on one plane (one-way radiation magnetic information), or winding the coil on two planes (two-dimensional radiation) Magnetic field information), can also be wound on three planes
- the low frequency alternating magnetic field of the magnetic emission module 12 for transmitting the low frequency magnetic signal may be a one-dimensional unidirectional magnetic field, a two-dimensional planar magnetic field, or a three-dimensional magnetic field, and preferably, the alternating magnetic field.
- the magnetic field is a three-dimensional magnetic field information.
- the low frequency alternating magnetic field of the magnetic emission module 12 for transmitting the low frequency magnetic signal has a low frequency, generally below 1 MHz.
- the frequency of the low frequency magnetic signal is 10 Hz to 1 MHz.
- the frequency of the low frequency magnetic signal is 200 Hz, 300 kHz, 500 Hz, 1 kHz, 1.5 kHz, 2 kHz, 2.5 kHz, 3 kHz, 4 kHz, 5 kHz, 10 kHz, 20 kHz, or 30 kHz.
- FIG. 5 is a flowchart of a method for short-range communication of a first terminal according to an embodiment of the present invention. As shown in FIG. 5, the method includes:
- S502 Generate a low frequency magnetic signal carrying data information, and transmit a low frequency magnetic signal.
- the first terminal generates data information that needs to be transmitted, encodes and modulates the data information, and performs power amplification on the data information, and the first terminal generates a low frequency magnetic signal that carries the data information by using a transmitting coil.
- the low frequency magnetic signal is transmitted to the opposite device through a low frequency alternating magnetic field.
- the data information can be data information such as a coupon service of the shopping mall, a push advertisement service of the subway, and the like, so that the fast data information transmission of the first terminal to the peer device can be realized, which is more convenient and faster than the scanning of the two-dimensional code, and can realize fast data communication or Conduct online transactions.
- FIG. 6 is a flowchart of a method for starting a radio channel operation by a first terminal according to an embodiment of the present invention. As shown in FIG. 6, the method includes:
- the data information carried in the low frequency magnetic signal is a radio frequency communication parameter
- the first terminal transmits the low frequency magnetic signal carrying the radio frequency communication parameter to the peer device.
- the first terminal configures the radio frequency channel according to the radio frequency communication parameter. After the configuration is complete, the radio channel of the first terminal is activated, and the first terminal performs real-time monitoring on the radio frequency signal transmitted by the peer device.
- S603 Receive radio frequency information
- the first terminal monitors the radio frequency signal transmitted by the peer device in real time, if If the first terminal receives the radio frequency signal transmitted by the peer device, the process proceeds to S504; if the first terminal does not receive the radio frequency signal transmitted by the peer device, the device jumps to S501 and continues to transmit the low frequency magnetic signal to the opposite end. device.
- S604 Establish radio frequency communication with the terminal.
- the radio communication is established with the peer device.
- FIG. 7 is a schematic structural diagram of a second terminal according to an embodiment of the present invention. As shown in FIG. 7, the second terminal 7 itself has a low frequency magnetic induction module 72, and further includes:
- a triggering module 71 configured to generate a trigger instruction
- the low frequency magnetic sensing module 72 is configured to sense an external low frequency magnetic signal according to a trigger command generated by the trigger module 71;
- the determining module 73 is configured to determine whether the low frequency magnetic signal induced by the low frequency magnetic sensing module 72 carries data information
- the first processing module 74 is configured to process the low frequency magnetic signal to obtain the data information carried by the determining module 73 when it is determined to be YES.
- the second terminal 7 senses an external low frequency magnetic signal through a built-in low frequency magnetic induction module 72.
- the low frequency magnetic induction module 72 is a built-in magnetic sensor, and the magnetic sensor is generally a Hall device, a giant magnetoresistance, etc. capable of detecting magnetic field information.
- the triggering module 71 generates a triggering command for controlling the operation of the low frequency magnetic sensing module 72.
- the low frequency magnetic sensing module 72 senses an external low frequency magnetic signal when the low frequency magnetic sensing module After sensing the low frequency magnetic signal, the determining module 73 determines whether the low frequency magnetic signal carries data information. If the low frequency magnetic signal does not carry data information, such as a static geomagnetic signal, the processing is not processed, and the trigger module 71 controls the low frequency magnetic sensing module. 72. Inductive external low frequency magnetic signal. If the low frequency magnetic signal carries data information, the first processing module 74 can read the electrical signal converted by the low frequency magnetic sensing module 72, perform filtering operation on the electrical signal, and perform filtering operation on the filtered data information.
- the data information can be a coupon business of a mall, a subway advertisement push service, etc.
- the data information the user can obtain the relevant service data information only through the terminal, and the second terminal 7 can quickly receive the data information sent by the peer device through the low frequency magnetic sensing module 72, thereby implementing fast data communication or network transaction.
- FIG. 8 is a schematic structural diagram of a second terminal with a radio frequency channel
- the data information may also be a radio frequency communication parameter
- the second terminal 7 further includes: a first radio frequency module 75, the first radio frequency
- the module 75 establishes radio frequency communication with the peer device according to the radio frequency communication parameters acquired by the first processing module 74.
- the low frequency magnetic sensing module 72 senses the external low frequency magnetic signal according to the triggering command generated by the triggering module 71, and the determining module 73 determines whether the low frequency magnetic signal carries the radio frequency communication parameter.
- the first processing module 74 The electrical signal converted by the low-frequency magnetic induction module 72 can be read, the electrical signal is filtered, the filtered data information is decoded, demodulated, and the data bit information is recovered, and the radio frequency communication parameter carried by the low-frequency magnetic signal is obtained.
- the first radio frequency module 75 configures the radio frequency channel parameters of the first radio frequency module 75 according to the radio frequency communication parameters acquired by the first processing module 74, activates the first radio frequency module 75, and transmits the radio frequency signal to the opposite end through the first radio frequency module 75.
- the device establishes radio frequency communication with the peer device.
- the first radio frequency module 75 may be a conventional channel of an intelligent terminal such as a Bluetooth or a wifi, or may be a wireless communication channel such as GSM, CDMA, TD-SCDMA, LTE, or EDGE.
- the low frequency magnetic signal may be a calculation of the communication distance by using a magnetic induction physical quantity metric.
- the magnetic induction intensity is attenuated by R -3 with the communication distance R, and the attenuation of the low-frequency magnetic signal when penetrating different objects is small, the anti-interference ability is strong, and the robust signal of the magnetic communication improves the communication security.
- the first processing module 74 can read the magnetic field signal value and the magnetic field signal strength value of the three-dimensional space of the X-axis, the Y-axis, and the Z-axis of the low-frequency sensing module 72 at the current position, and the magnetic field signal strength value can also be Calculated based on the magnetic field signal values of the X-axis, Y-axis, and Z-axis.
- FIG. 9 is a schematic diagram showing the dimension of the second terminal inducing the low frequency magnetic signal, and the second terminal can sense the three-dimensional magnetic field information, which are respectively the X-axis, the Y-axis, and the Z-axis, and the calculation of the magnetic field strength is If the second terminal is located at point A of the space, the magnetic field strength sensed by the second terminal is
- the radio frequency communication parameters include, but are not limited to, information related to radio link operation, protocol information, and the like, and may be information such as a login password;
- the radio link working parameters include a radio frequency channel. Frequency information of work, matching pass Information such as the address and address, wherein the frequency point information of the working of the radio frequency channel is a common working frequency band of the intelligent terminal, such as a Bluetooth frequency band, a wifi frequency band, a GSM frequency band, a CDMA frequency band, a TD-SCDMA frequency band, an LTE frequency band, an EDGE frequency band, and the like.
- the frequency of the low frequency magnetic signal induced by the low frequency magnetic induction module 72 is 10 Hz to 1 MHz.
- the frequency of the low frequency magnetic signal is 200 Hz, 300 kHz, 500 Hz, 1 kHz, 1.5 kHz, 2 kHz, 2.5 kHz, 3 kHz. 4KHz, 5KHz, 10KHz, 20KHz or 30KHz.
- the intensity of the low frequency magnetic signal induced by the low frequency magnetic induction module 72 is stepwise, and preferably, the intensity is 2 steps, 3 steps, 4 steps or 5 steps.
- the low frequency magnetic signal strength is higher than the geomagnetic intensity.
- FIG. 10 is a schematic diagram of a method for short-range communication of a second terminal according to an embodiment of the present invention. As shown in FIG. 10, the method includes:
- S1002 sensing an external low frequency magnetic signal according to the trigger instruction
- S1004 Processing the low frequency magnetic signal to obtain data information carried by the low frequency magnetic signal.
- the second terminal senses an external low-frequency magnetic signal through a built-in magnetic sensor
- the magnetic sensor is generally a device capable of detecting magnetic field information, such as a Hall device and a giant magnetoresistance, and the magnetic sensor can convert the magnetic signal into an electrical signal.
- the electrical signal can be processed, analyzed, computed, and the like.
- the second terminal controls the operation of the magnetic sensor according to the generated triggering instruction.
- the magnetic sensor senses the external low frequency magnetic signal. When the magnetic sensor senses the low frequency magnetic signal, the second terminal determines whether the low frequency magnetic signal carries the data information.
- the low frequency magnetic signal does not carry data information, such as a static geomagnetic signal, and is not processed.
- the second terminal again controls the magnetic sensor to sense an external low frequency magnetic signal.
- the second terminal reads through the magnetic sensor.
- the converted electrical signal is subjected to filtering operation on the electrical signal, and the filtered data information is decoded and demodulated to recover the data bit information, and the data information carried by the low frequency magnetic signal is obtained.
- the decoding mode may be one of a plurality of decoding modes such as a Manchester code, a differential Manchester code, a return-to-zero code, a non-return to zero code, or a direct acquisition of data.
- the data information can be data information such as a coupon business of a shopping mall, a push advertisement service of a subway, and the like, and the user can obtain relevant business data information only through the terminal.
- the second terminal can quickly receive the data information sent by the peer device through the magnetic sensor, and implement fast data communication or network transaction.
- FIG. 11 is a flowchart of a method for a second terminal to activate an RF channel according to an embodiment of the present invention. As shown in FIG. 11, the method includes:
- the peer device transmits a low frequency magnetic signal carrying a radio frequency communication parameter, and the second terminal continuously senses the external low frequency magnetic signal through the built-in magnetic sensor.
- the process jumps to S901; if the second terminal senses the low frequency magnetic signal, it is determined whether the low frequency magnetic signal carries the radio frequency communication parameter. If you carry it, go to S903.
- the second terminal when the second terminal senses the low frequency magnetic signal, the second terminal performs filtering, decoding, demodulation, and the like on the low frequency magnetic signal to obtain the radio frequency communication parameter carried by the second terminal.
- the second terminal configures the radio frequency channel according to the radio frequency communication parameter. After the configuration is complete, the radio channel of the second terminal is activated, and the second terminal transmits the radio frequency signal to the peer device to establish radio frequency communication with the peer device.
- FIG. 12 is a flowchart of a method for short-range communication according to an embodiment of the present invention. As shown in FIG. 12, the method includes:
- the first terminal generates data information; generates a low frequency magnetic signal carrying the data information, and transmits the low frequency magnetic signal;
- the second terminal generates a trigger instruction; senses an external low frequency magnetic signal according to the trigger instruction; determines whether the low frequency magnetic signal carries data information; and when the determination is yes, processes the low frequency magnetic signal to obtain the data information carried by the low frequency magnetic signal.
- the first terminal generates data information that needs to be radiated, and processes the data
- the first terminal generates a low-frequency magnetic signal carrying the data through a transmitting coil
- the low-frequency magnetic field is performed by a low-frequency alternating magnetic field.
- the signal is transmitted to the second terminal.
- the second terminal controls the operation of the magnetic sensor built in the second terminal according to the generated triggering instruction.
- the magnetic sensor senses the external low frequency magnetic signal.
- the second terminal determines whether the low frequency magnetic signal carries the data. Information if the low frequency magnetic signal does not carry data
- the information, such as the static geomagnetic signal is not processed, and the second terminal again controls the magnetic sensor to sense the external low frequency magnetic signal.
- the second terminal reads the electrical signal converted by the magnetic sensor, The electrical signal is subjected to a filtering operation, and the filtered data information is decoded and demodulated to recover the data bit information, and the data information carried by the low frequency magnetic signal is obtained.
- the data information can be data information such as a coupon service of the mall and a subway advertisement push service, and the user can obtain relevant service data information only through the terminal, thereby realizing fast data information transmission from the first terminal to the second terminal, which is more than two-dimensional. Code scanning is more convenient and fast, enabling fast data communication or network transactions.
- the data may also be a radio frequency communication parameter.
- the first terminal After the first terminal transmits the low frequency magnetic signal carrying the radio frequency communication parameter, the first terminal configures its radio frequency channel according to the radio frequency communication parameter, and starts the radio frequency of the first terminal. The channel works, and the first terminal monitors the radio frequency signal transmitted by the second terminal.
- the second terminal controls the operation of the magnetic sensor built in the second terminal according to the generated triggering instruction.
- the magnetic sensor senses the external low frequency magnetic signal. When the magnetic sensor senses the low frequency magnetic signal, the second terminal determines whether the low frequency magnetic signal carries the radio frequency.
- Communication parameters if the low frequency magnetic signal does not carry radio frequency communication parameters, such as static geomagnetic signals, then it is not processed, and the second terminal again controls the magnetic sensor to sense an external low frequency magnetic signal, and if the low frequency magnetic signal carries radio frequency communication parameters, then The second terminal reads the electrical signal converted by the magnetic sensor, performs filtering operation on the electrical signal, decodes and demodulates the filtered data information, recovers the data bit information, acquires the radio frequency communication parameter carried by the low frequency magnetic signal, and acquires the The radio frequency communication parameter carried by the low frequency magnetic signal, the second terminal configures the radio frequency channel according to the obtained radio frequency communication parameter, activates the radio channel of the second terminal, and transmits the radio frequency signal to the first terminal through the radio frequency channel. If the first terminal monitors the radio frequency signal transmitted by the second terminal, establishing radio frequency communication with the second terminal, otherwise entering the next round of establishing the connection process, and then transmitting the low frequency magnetic signal to the second terminal.
- radio frequency communication parameters such as static geomagnetic signals
- the frequency of the low frequency alternating magnetic field used by the first terminal to transmit the low frequency magnetic signal is low, generally below 1 MHz.
- the frequency of the low frequency magnetic signal is 10 Hz to 1 MHz.
- the frequency of the low frequency magnetic signal is 200 Hz, 300 kHz, 500 Hz, 1 kHz, 1.5 kHz, 2 kHz, 2.5 kHz, 3 kHz, 4 kHz, 5 kHz, 10 kHz, 20 kHz, or 30 kHz.
- the current flowing through the transmitting coil in the first terminal is stepwise, and the current is proportional to the intensity of the radiated magnetic field of the coil. Therefore, the first The intensity of the low frequency magnetic signal emitted by the terminal is stepwise. Preferably, the intensity is 2 steps, 3 steps, 4 steps or 5 steps.
- the winding method of the transmitting coil in the first terminal may be winding a coil on one plane (one-way radiation magnetic information), or winding the coil on two planes (two dimensional radiation magnetic field) Information) It is also possible to wind the coils (three dimensions of the radiated magnetic field information) in three planes, preferably the coils wound in three planes.
- the low frequency alternating magnetic field used by the first terminal to transmit the low frequency magnetic signal may be a one-dimensional unidirectional magnetic field, a two-dimensional planar magnetic field, or a three-dimensional magnetic field.
- the alternating magnetic field is Three-dimensional magnetic field information.
- FIG. 13 is a schematic diagram of a short-range communication system according to an embodiment of the present invention. As shown in FIG. 13, the short-range communication system includes:
- a first terminal configured to generate data information; generate a low frequency magnetic signal carrying the data information, and transmit a low frequency magnetic signal;
- the second terminal is configured to generate a trigger instruction; sense an external low frequency magnetic signal according to the trigger instruction; determine whether the low frequency magnetic signal carries data information; and when the determination is yes, process the low frequency magnetic signal to obtain the data information carried thereby .
- the short-range communication system is constructed on the basis of a magnetic sensor that the second terminal itself has.
- the first terminal generates data information that needs to be radiated, and processes the data.
- the first terminal generates a low-frequency magnetic signal carrying the data through a transmitting coil, and transmits the low-frequency magnetic signal to the low-frequency alternating magnetic field to the low-frequency magnetic signal.
- the second terminal controls the operation of the magnetic sensor built in the second terminal according to the generated triggering instruction.
- the magnetic sensor senses the external low frequency magnetic signal. When the magnetic sensor senses the low frequency magnetic signal, the second terminal determines whether the low frequency magnetic signal carries the data.
- the second terminal again controls the magnetic sensor to sense an external low frequency magnetic signal, and if the low frequency magnetic signal carries data information, the second terminal reads The electrical signal converted by the magnetic sensor is taken, the electrical signal is filtered, and the filtered data information is decoded and demodulated to recover the data bit information, and the data information carried by the low frequency magnetic signal is obtained.
- the data information can be data information such as a coupon service of the mall and a subway advertisement push service, and the user can obtain relevant service data information only through the terminal, thereby realizing fast data information transmission from the first terminal to the second terminal, which is more than two-dimensional. Code scanning is more convenient and fast, enabling fast data communication or network transactions.
- the data may also be a radio frequency communication parameter
- the first terminal transmits the low frequency magnetic signal carrying the radio frequency communication parameter
- the first terminal configures the radio frequency channel according to the radio frequency communication parameter
- the radio channel of the first terminal is activated, and the first terminal monitors the radio frequency signal transmitted by the second terminal.
- the second terminal controls the operation of the magnetic sensor built in the second terminal according to the generated triggering instruction.
- the magnetic sensor senses the external low frequency magnetic signal.
- the second terminal determines whether the low frequency magnetic signal carries the radio frequency.
- Communication parameters if the low frequency magnetic signal does not carry radio frequency communication parameters, such as static geomagnetic signals, then it is not processed, and the second terminal again controls the magnetic sensor to sense an external low frequency magnetic signal, and if the low frequency magnetic signal carries radio frequency communication parameters, then The second terminal reads the electrical signal converted by the magnetic sensor, performs filtering operation on the electrical signal, decodes and demodulates the filtered data information, recovers the data bit information, acquires the radio frequency communication parameter carried by the low frequency magnetic signal, and acquires the The radio frequency communication parameter carried by the low frequency magnetic signal, the second terminal configures the radio frequency channel according to the obtained radio frequency communication parameter, activates the radio channel of the second terminal, and transmits the radio frequency signal to the first terminal through the radio frequency channel. If the first terminal monitors the radio frequency signal transmitted by the second terminal, establishing radio frequency communication with the second terminal, otherwise entering the next round of establishing the connection process, and then transmitting the low frequency magnetic signal to the second terminal.
- radio frequency communication parameters such as static geomagnetic signals
- the built-in magnetic sensor of the terminal is used as a compass, compass, etc., and uses the earth's own static magnetic field distribution characteristics to achieve direction pointing.
- the magnetic sensor built in the terminal the magnetic sensor can detect the alternating magnetic field signal, thereby realizing communication in a close distance without changing or replacing the terminal, such as a coupon service of a shopping mall, a subway advertisement pushing service, and the like. Users can obtain relevant business data information only through the terminal, reduce user cost, improve stability, and reduce the promotion threshold due to a large user base.
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Abstract
本发明提供一种终端及近距离通信的方法，该终端自身具有低频磁感应模块，还包括：触发模块，用于生成触发指令；低频磁感应模块，用于根据触发模块生成的触发指令，感应外部低频磁信号；判断模块，用于判断低频磁感应模块感应的低频磁信号是否携带数据信息；第一处理模块，用于当判断模块判断为是时，对低频磁信号进行处理，获取其携带的数据信息。终端可实现在近距离情况下的通信，降低了用户成本，提高了稳定性。
Description
本发明涉及近距离通信领域，尤其涉及一种终端及近距离通信的方法。
目前智能终端已经非常普遍，如何利用智能终端现有的资源，实现与智能终端的近距离数据通信是当前的热点，现有基于2.4GHz RFID-SIM技术以及NFC(Near Field Communication，近距离无线通讯)技术能够实现近距离范围内的可靠通信与数据传输。
(1)RFID-SIM技术通过在智能终端上插入具备RFID-SIM功能的SIM卡或一张SD卡，通过SIM卡或SD卡的射频通道实现与阅读器通信，此种方式需要用户更换SIM卡，带来用户成本的增加。
(2)NFC终端是在普通智能终端的基础上，加入NFC芯片和配套的元器件，如线圈以及需要插入与之配套的带有SWP功能接口的SIM卡等，和阅读器通过射频通道进行数据通信，此种方式需要普通用户购买定制具备NFC功能的终端和更换SIM卡，给用户带来的成本非常高，产业链也非常复杂。
此外，现有技术中，在不要求用户更换手机等智能终端和更换SIM或SD卡方面实现和手机的近距离通信情况下，有采用声波进行数据传输通信，即利用智能终端麦克风实现接收声音信号，利用喇叭实现发送声音信号，此种方式受声音传输过程中多路径、频带窄等影响以及智能终端麦克风和喇叭频响差异大等影响使得通信效果不佳，如通信有比较强的方向性而引起的用户体验差；也有利用智能终端自带的摄像头和闪光灯进行数据通信，即闪光灯控制工作与不工作发送数据，摄像头感知灯光变化情况接收数据，此种方式易受周围环境以及遮挡影响而导致通信成功率和效果比较差。
发明内容
本发明提供一种终端及近距离通信的方法，解决了在近距离通信情况下，需要对终端进行改造才能实现近距离通信，从而增加用户成本的问题。
为解决上述技术问题，本发明采用以下技术方案：
一种终端，所述终端自身具有低频磁感应模块，还包括：
触发模块，用于生成触发指令；
所述低频磁感应模块，用于根据所述触发模块生成的触发指令，感应外部低频磁信号；
判断模块，用于判断所述低频磁感应模块感应的低频磁信号是否携带数据信息；
第一处理模块，用于当所述判断模块判断为是时，对所述低频磁信号进行处理，获取其携带的数据信息。
进一步地，所述数据信息为射频通信参数；所述终端还包括：
第一射频模块，用于根据所述第一处理模块获取的射频通信参数，与对端设备建立射频通信。
进一步地，所述低频磁感应模块感应的低频磁信号的频率为10Hz至1MHz。
进一步地，所述低频磁感应模块感应的低频磁信号的强度为阶梯变化的，且高于地磁强度。
一种近距离通信的方法，包括：
生成触发指令；
根据所述触发指令，感应外部低频磁信号；
判断所述低频磁信号是否携带数据信息；
当判断为是时，对所述低频磁信号进行处理，获取其携带的数据信息。
进一步地，所述数据信息为射频通信参数；还包括：
根据所述射频通信参数，与对端设备建立射频通信。
一种终端，包括：
第二处理模块，用于生成数据信息；
低频磁发射模块，用于生成携带所述第二处理模块生成的数据信息的低频磁信号，并发射所述低频磁信号。
进一步地，所述数据信息为射频通信参数；所述终端还包括：
第二射频模块，用于监测对端设备发射的射频信号，并与对端设备建立射频通信。
进一步地，所述磁发射模块发射的低频磁信号的频率为10Hz至1MHz。
进一步地，所述磁发射模块发射的低频磁信号的强度为阶梯变化的，且高于地磁强度。
进一步地，所述磁发射模块用于发射所述低频磁信号的磁场为一维单向磁场、两维平面磁场或三维立体磁场。
一种近距离通信的方法，包括：
第一终端生成数据信息；生成携带所述数据信息的低频磁信号，并发射所述低频磁信号；
第二终端生成触发指令；根据所述触发指令，感应外部低频磁信号；判断所述低频磁信号是否携带数据信息；当判断为是时，对所述低频磁信号进行处理，获取其携带的数据信息。
进一步地，所述数据信息为射频通信参数；还包括：
所述第一终端根据获取的射频通信参数，与第二终端建立射频通信；
所述第二终端监测所述第一终端发射的射频信号，并与所述第一终端建立射频通信。
本发明提供一种终端及近距离通信的方法，利用终端自身具有的低频磁感应模块，从而在不更改、置换终端的基础上，实现在近距离情况下的通信，如商场的优惠券业务、地铁广告推送业务等，用户仅通过终端就能获取相关业务数据信息，降低了用户成本，提高了稳定性，并且由于具备大量的用户群基础，从而降低了推广门槛。
图1为本发明一实施例提供的第一终端的结构示意图；
图2为本发明另一实施例提供的带有射频通道的第一终端的结构示意图；
图3为本发明一实施例提供的第一终端中低频磁发射模块的结构示意图；
图4为本发明一实施例提供的第一终端中低频磁发射模块内发射线圈电流和辐射磁场对应关系的示意图；
图5为本发明一实施例提供的第一终端近距离通信的方法的流
程图；
图6为本发明一实施例提供的第一终端启动射频通道工作的方法的流程图；
图7为本发明一实施例提供的第二终端的结构示意图；
图8为本发明另一实施例提供的带有射频通道的第二终端的结构示意图；
图9为本发明一实施例提供的第二终端感应低频磁信号的维度示意图；
图10为本发明一实施例提供的第二终端近距离通信的方法的流程图；
图11为本发明一实施例提供的第二终端启动射频通道工作的方法的流程图；
图12为本发明一实施例提供的近距离通信的方法的流程图；
图13为本发明一实施例提供的近距离通信系统的示意图。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例只是本发明中一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
下面通过具体实施方式结合附图对本发明作进一步详细说明。
图1为本发明一实施例提供的第一终端的结构示意图，如图1所示，该第一终端1包括：
第二处理模块11，用于生成数据信息；
低频磁发射模块12，用于生成携带第二处理模块11生成的数据信息的低频磁信号，并发射该低频磁信号。
具体地，该第二处理模块11生成数据信息，并对该数据信息进行处理，该第二处理模块11包括但不局限于顺次连接的主控子模块111、调制编码子模块112以及驱动子模块113，该主控子模块111控制调制编码子模块112和驱动子模块113的工作状态，此外，该主控子模块111还生成所需要发射的数据信息，将该数据信息发送至调
制编码子模块112，该调制编码子模块112接收主控子模块111发送的数据信息，对该数据信息进行编码并调制后，发送至驱动子模块113，该驱动子模块113接收调制编码子模块112发送的经编码、调制后的数据信息，并对该数据信息进行功率放大，并将经过功率放大的数据信息发送至低频磁发射模块12，此外，该驱动子模块113还用于对低频磁发射模块12进行驱动，该低频磁发射模块12通过发射线圈生成携带第二处理模块11生成的数据信息的低频磁信号，并通过低频率的交变磁场方式将该低频磁信号发射至对端设备。该数据信息可以为商场的优惠券业务、地铁广告推送业务等数据信息，从而可以实现第一终端到对端设备的快速数据信息传递，比二维码扫描更加方便快捷，能够实现快捷数据通信或进行网络交易。
在上述技术方案中，如图2为带有射频通道的第一终端的结构示意图，该数据还可以为射频通信参数，该第一终端1还包括第一射频模块13，该主控子模块111还控制第二射频模块13的工作状态，该第一射频模块13根据获取的射频通信参数，与对端设备建立射频通信。第二处理模块11生成该射频通信参数，并对该射频通信参数进行上述处理后，通过低频磁发射模块12生成携带第二处理模块11生成的射频通信参数的低频磁信号，并发射该低频磁信号，将该低频磁信号发射之后，该第二处理模块11根据射频通信参数配置第二射频模块13，启动该第二射频模块13工作，该第二射频模块13对对端设备发射的射频信号进行监测，若该第二射频模块13监测到对端设备发射的射频信号时，则与对端设备建立射频通信，否则进入下一轮的建立连接过程，再发射低频磁信号至对端设备。
在上述技术方案中，该射频通信参数包括但不局限于射频链路工作参数、协议信息等与射频链路工作相关的信息，也可以是登录口令等信息；该射频链路工作参数包括射频通道工作的频点信息、匹配通信地址等信息，其中，射频通道工作的频点信息为智能终端常见的工作频段，如蓝牙频段、wifi频段、GSM频段、CDMA频段、TD-SCDMA频段、LTE频段或EDGE频段等。
在上述技术方案中，该调制编码子模块112主要实现对基带信号的调制与编码，其中，其调制方式可以通过调制电路实现，该调制电
路可以是FSK(频移键控)调制、PSK(相移键控)调制、ASK(幅度)调制或OOK调制等多种调制电路中的一种，优选地，该调制电路选择为ASK(幅度)调制；其编码方式可以为曼彻斯特码、差分曼彻斯特码、归零码、不归零码或不编码等多种编码方式中的一种。
在上述技术方案中，该低频磁发射模块12可以是基于环状空心线圈构成的发射电路，也可以是磁材料四周绕制的环形线圈，该磁材料可以是铁氧体、强磁铁、磁钢等磁性材料。该低频磁发射模块12的大小由有关规则或特定应用所施加的限制决定，如方形、圆形、椭圆形或不规则等各种形状。如图3为第一终端中低频磁发射模块12的结构示意图，其中，可以由空心线圈301组成磁发射电路，即该低频磁发射模块12为基于该环状空心线圈构成的发射电路，对该空心线圈301通电后，该低频磁发射模块12发射低频磁信号302，该发射电路中的发射线圈内的通电电流决定磁场发射信息变化、磁场强度等，该空心线圈301决定磁场发射强度；还可以在空心线圈303中插入磁性材料铁氧体304后共同组成磁发射电路，即该低频磁发射模块12为磁材料四周绕制的环形线圈的发射电路，对该线圈303通电后，该低频磁发射模块12发射低频磁信号305，该发射电路中的发射线圈内的通电电流决定磁场发射信息变化、磁场强度等，线圈303以及铁氧体304共同决定磁场发射强度。
在上述技术方案中，该磁发射模块12中流过发射线圈的通电电流是阶梯变化的，该通电电流与线圈辐射磁场强度成正比关系，因此，该磁发射模块12发射的低频磁信号的强度为阶梯变化的，优选地，该强度为2阶梯、3阶梯、4阶梯或5阶梯变化的。如图4为第一终端中发射线圈电流和辐射磁场对应关系的示意图，波形401为发射线圈的工作电流，波形402为线圈辐射的磁场所体现的磁场强度变化情况，电流波形401与磁场强度波形402在相位、周期保持一致。此外，为了保证终端能够稳定可靠地接收到该低频磁信号，该低频磁信号强度高于地磁强度。
在上述技术方案中，该磁发射模块12中发射线圈的绕制方法可以为在一个平面上绕制线圈(单向辐射磁性信息)，也可以在两个平面上绕制线圈(两个维度辐射磁场信息)，还可以在三个平面上绕制
线圈(三个维度辐射磁场信息)，优选地，该发射线圈为在三个平面上绕制的线圈。相应地，该磁发射模块12用于发射低频磁信号的低频率的交变磁场可以为一维单向磁场，也可以为两维平面磁场，还可以为三维立体磁场，优选地，该交变磁场为三维立体磁场信息。
在上述技术方案中，该磁发射模块12用于发射低频磁信号的低频率的交变磁场的频率较低，一般在1MHz以下。该低频磁信号的频率为10Hz至1MHz，优选地，该低频磁信号的频率为200Hz、300KHz、500Hz、1KHz、1.5KHz、2KHz、2.5KHz、3KHz、4KHz、5KHz、10KHz、20KHz或30KHz。
图5为本发明一实施例提供的第一终端近距离通信的方法的流程图，如图5所示，该方法包括：
S501：生成数据信息；
S502：生成携带数据信息的低频磁信号，并发射低频磁信号。
具体地，该第一终端生成所需要发射的数据信息，对该数据信息进行编码并调制后，对该数据信息进行功率放大，该第一终端通过发射线圈生成携带该数据信息的低频磁信号，并通过低频率的交变磁场方式将该低频磁信号发射至对端设备。该数据信息可以为商场的优惠券业务、地铁广告推送业务等数据信息，从而可以实现第一终端到对端设备的快速数据信息传递，比二维码扫描更加方便快捷，能够实现快捷数据通信或进行网络交易。
图6为本发明一实施例提供的第一终端启动射频通道工作的方法的流程图，如图6所示，该方法包括：
S601：发射低频磁信号；
具体地，该低频磁信号中携带的数据信息为射频通信参数，第一终端发射携带该射频通信参数的低频磁信号至对端设备。
S602：配置射频通信参数，启动射频通道工作；
具体地，第一终端根据该射频通信参数，对射频通道进行配置，配置完成后，启动第一终端的射频通道工作，第一终端对对端设备发射的射频信号进行实时监测。
S603：接收射频信息；
具体地，该第一终端实时监测接收对端设备发射的射频信号，若
该第一终端接收到对端设备发射的射频信号，则跳转到S504；若该第一终端未接收到对端设备发射的射频信号，则跳转到S501，继续发射低频磁信号至对端设备。
S604：与终端建立射频通信；
具体地，当第一终端接收到对端设备发射的射频信号时，则与对端设备建立射频通信。
图7为本发明一实施例提供的第二终端的结构示意图，如图7所示，该第二终端7自身具有低频磁感应模块72，还包括：
触发模块71，用于生成触发指令；
低频磁感应模块72，用于根据触发模块71生成的触发指令，感应外部低频磁信号；
判断模块73，用于判断低频磁感应模块72感应的低频磁信号是否携带数据信息；
第一处理模块74，用于当判断模块73判断为是时，对低频磁信号进行处理，获取其携带的数据信息。
具体地，该第二终端7通过内置的低频磁感应模块72感应外部低频磁信号，该低频磁感应模块72为内置的磁传感器，该磁传感器一般为霍尔器件、巨磁电阻等能够探测磁场信息的器件，该磁传感器可以将磁信号转换为电信号，该电信号能够被进行存储、分析、运算等处理。该触发模块71生成触发指令，该触发指令用于控制该低频磁感应模块72工作，将该触发指令发送至该低频磁感应模块72后，该低频磁感应模块72感应外部低频磁信号，当该低频磁感应模块72感应到低频磁信号后，判断模块73判断该低频磁信号是否携带数据信息，若该低频磁信号不携带数据信息，如静态地磁信号，则不对其进行处理，触发模块71再控制低频磁感应模块72感应外部低频磁信号，若该低频磁信号携带数据信息，则第一处理模块74能够读取通过低频磁感应模块72转换的电信号，对该电信号进行滤波运算，对滤波后的数据信息进行解码、解调后恢复数据比特信息，获取该低频磁信号携带的数据信息，其中，其解码方式可以是曼彻斯特码、差分曼彻斯特码、归零码、不归零码或为直接获取数据等多种解码方式中的一种。该数据信息可以为商场的优惠券业务、地铁广告推送业务等
数据信息，用户仅通过终端就能获取相关业务数据信息，第二终端7能够通过低频磁感应模块72快速接收到对端设备发送的数据信息，实现快捷数据通信或进行网络交易。
在上述技术方案中，如图8为带有射频通道的第二终端的结构示意图，该数据信息还可以为射频通信参数，该第二终端7还包括：第一射频模块75，该第一射频模块75根据第一处理模块74获取的射频通信参数，与对端设备建立射频通信。该低频磁感应模块72根据触发模块71生成的触发指令，感应外部低频磁信号，判断模块73判断该低频磁信号是否携带射频通信参数，若该低频磁信号携带射频通信参数，则第一处理模块74能够读取通过低频磁感应模块72转换的电信号，对该电信号进行滤波运算，对滤波后的数据信息进行解码、解调后恢复数据比特信息，获取该低频磁信号携带的射频通信参数，该第一射频模块75根据第一处理模块74获取的射频通信参数，配置第一射频模块75的射频通道参数，启动该第一射频模块75工作，并通过第一射频模块75发射射频信号至对端设备，与对端设备建立射频通信，该第一射频模块75可以是蓝牙、wifi等智能终端常规通道，也可以是GSM、CDMA、TD-SCDMA、LTE、EDGE等无线通信通道。
在上述技术方案中，该低频磁信号可以是用磁感应强度物理量度量计算通信距离。磁感应强度随通信距离R呈R-3衰减，且采用低频磁信号穿透不同物体时的衰减小，抗干扰能力强，磁通信的鲁棒信号，提高通信的安全性。
在上述技术方案中，第一处理模块74能够读取低频感应模块72在当前位置的X轴、Y轴、Z轴的三维空间的磁场信号值及磁场信号强度值，该磁场信号强度值也可以根据X轴、Y轴、Z轴的磁场信号值计算得出。如图9为第二终端感应低频磁信号的维度示意图，第二终端可以感应三维立体磁场信息，分别为X轴、Y轴和Z轴，对磁场强度的计算为
如第二终端位于空间A点，则第二终端所感应的磁场强度为
在上述技术方案中，该射频通信参数包括但不局限于射频链路工作参数、协议信息等与射频链路工作相关的信息，也可以是登录口令等信息；该射频链路工作参数包括射频通道工作的频点信息、匹配通
信地址等信息，其中，射频通道工作的频点信息为智能终端常见的工作频段，如蓝牙频段、wifi频段、GSM频段、CDMA频段、TD-SCDMA频段、LTE频段、EDGE频段等。
在上述技术方案中，该低频磁感应模块72感应的低频磁信号的频率为10Hz至1MHz，优选地，该低频磁信号的频率为200Hz、300KHz、500Hz、1KHz、1.5KHz、2KHz、2.5KHz、3KHz、4KHz、5KHz、10KHz、20KHz或30KHz。
在上述技术方案中，该低频磁感应模块72感应的低频磁信号的强度为阶梯变化的，优选地，该强度为2阶梯、3阶梯、4阶梯或5阶梯变化的。此外，为了保证终端能够稳定可靠地接收到该低频磁信号，该低频磁信号强度高于地磁强度。
图10为本发明一实施例提供的第二终端近距离通信的方法，如图10所示，该方法包括：
S1001：生成触发指令；
S1002：根据触发指令，感应外部低频磁信号；
S1003：判断低频磁信号是否携带数据信息；
S1004：对该低频磁信号进行处理，获取其携带的数据信息。
具体地，该第二终端通过内置的磁传感器感应外部低频磁信号，该磁传感器一般为霍尔器件、巨磁电阻等能够探测磁场信息的器件，该磁传感器可以将磁信号转换为电信号，该电信号能够被进行存储、分析、运算等处理。第二终端根据生成的触发指令，控制该磁传感器工作，该磁传感器感应外部低频磁信号，当该磁传感器感应到低频磁信号后，第二终端判断该低频磁信号是否携带数据信息，若该低频磁信号不携带数据信息，如静态地磁信号，则不对其进行处理，第二终端再次控制磁传感器感应外部低频磁信号，若该低频磁信号携带数据信息，则第二终端读取通过磁传感器转换的电信号，对该电信号进行滤波运算，对滤波后的数据信息进行解码、解调后恢复数据比特信息，获取该低频磁信号携带的数据信息。其中，其解码方式可以是曼彻斯特码、差分曼彻斯特码、归零码、不归零码或为直接获取数据等多种解码方式中的一种。该数据信息可以为商场的优惠券业务、地铁广告推送业务等数据信息，用户仅通过终端就能获取相关业务数据信息，
第二终端能够通过磁传感器快速接收到对端设备发送的数据信息，实现快捷数据通信或进行网络交易。
图11为本发明一实施例提供的第二终端启动射频通道的方法的流程图，如图11所示，该方法包括：
S1001：持续感应低频磁信号；
具体地，对端设备发射携带射频通信参数的低频磁信号，第二终端通过内置的磁传感器持续感应外部低频磁信号。
S1002：感应到低频磁信号；
具体地，若第二终端未感应到低频磁信号或低频磁信号中不携带射频通信参数，则跳转到S901；若第二终端感应到低频磁信号，判断该低频磁信号是否携带射频通信参数，若携带，则跳转到S903。
S1003：处理该低频磁信号；
具体地，当第二终端感应到低频磁信号时，第二终端对该低频磁信号进行滤波、解码、解调等解析处理，获取其携带的射频通信参数。
S1004：配置射频通信参数，启动射频通道工作；
具体地，第二终端根据该射频通信参数，对射频通道进行配置，配置完成后，启动第二终端的射频通道工作，第二终端发射射频信号至对端设备，与对端设备建立射频通信。
图12为本发明一实施例提供的近距离通信的方法的流程图，如图12所示，该方法包括：
S1201：第一终端生成数据信息；生成携带数据信息的低频磁信号，并发射低频磁信号；
S1202：第二终端生成触发指令；根据触发指令，感应外部低频磁信号；判断该低频磁信号是否携带数据信息；当判断为是时，对该低频磁信号进行处理，获取其携带的数据信息。
具体地，该第一终端生成需要辐射的数据信息，并对该数据进行处理，该第一终端通过发射线圈生成携带该数据的低频磁信号，并通过低频率的交变磁场方式将该低频磁信号发射至第二终端。第二终端根据生成的触发指令，控制第二终端内置的磁传感器工作，该磁传感器感应外部低频磁信号，当该磁传感器感应到低频磁信号后，第二终端判断该低频磁信号是否携带数据信息，若该低频磁信号不携带数据
信息，如静态地磁信号，则不对其进行处理，第二终端再次控制磁传感器感应外部低频磁信号，若该低频磁信号携带数据信息，则第二终端读取通过磁传感器转换的电信号，对该电信号进行滤波运算，对滤波后的数据信息进行解码、解调后恢复数据比特信息，获取该低频磁信号携带的数据信息。该数据信息可以为商场的优惠券业务、地铁广告推送业务等数据信息，用户仅通过终端就能获取相关业务数据信息，从而可以实现第一终端到第二终端的快速数据信息传递，比二维码扫描更加方便快捷，能够实现快捷数据通信或进行网络交易。
在上述技术方案中，该数据还可以为射频通信参数，第一终端将携带该射频通信参数的低频磁信号发射之后，该第一终端根据射频通信参数配置其射频通道，启动第一终端的射频通道工作，该第一终端对第二终端发射的射频信号进行监测。第二终端根据生成的触发指令，控制第二终端内置的磁传感器工作，该磁传感器感应外部低频磁信号，当该磁传感器感应到低频磁信号后，第二终端判断该低频磁信号是否携带射频通信参数，若该低频磁信号不携带射频通信参数，如静态地磁信号，则不对其进行处理，第二终端再次控制磁传感器感应外部低频磁信号，若该低频磁信号携带射频通信参数，则第二终端读取通过磁传感器转换的电信号，对该电信号进行滤波运算，对滤波后的数据信息进行解码、解调后恢复数据比特信息，获取该低频磁信号携带的射频通信参数，获取该低频磁信号携带的射频通信参数，第二终端根据获取的射频通信参数，配置其射频通道，启动第二终端的射频通道工作，并通过该射频通道发射射频信号至第一终端。若该第一终端监测到第二终端发射的射频信号时，则与第二终端建立射频通信，否则进入下一轮的建立连接过程，再发射低频磁信号至第二终端。
在上述技术方案中，第一终端用于发射低频磁信号的低频率的交变磁场的频率较低，一般在1MHz以下。该低频磁信号的频率为10Hz至1MHz，优选地，该低频磁信号的频率为200Hz、300KHz、500Hz、1KHz、1.5KHz、2KHz、2.5KHz、3KHz、4KHz、5KHz、10KHz、20KHz或30KHz。
在上述技术方案中，该第一终端中流过发射线圈的通电电流是阶梯变化的，该通电电流与线圈辐射磁场强度成正比关系，因此，第一
终端发射的低频磁信号的强度为阶梯变化的，优选地，该强度为2阶梯、3阶梯、4阶梯或5阶梯变化的。
在上述技术方案中，第一终端中的发射线圈的绕制方法可以为在一个平面上绕制线圈(单向辐射磁性信息)，也可以在两个平面上绕制线圈(两个维度辐射磁场信息)，还可以在三个平面上绕制线圈(三个维度辐射磁场信息)，优选地，该发射线圈为在三个平面上绕制的线圈。相应地，第一终端用于发射低频磁信号的低频率的交变磁场可以为一维单向磁场，也可以为两维平面磁场，还可以为三维立体磁场，优选地，该交变磁场为三维立体磁场信息。
图13为本发明一实施例提供的近距离通信系统的示意图，如图13所示，该近距离通信系统包括：
第一终端，用于生成数据信息；生成携带数据信息的低频磁信号，并发射低频磁信号；
第二终端，用于生成触发指令；根据触发指令，感应外部低频磁信号；判断该低频磁信号是否携带数据信息；当判断为是时，对该低频磁信号进行处理，获取其携带的数据信息。
具体地，该近距离通信系统是在第二终端自身具有的磁传感器的基础上构建的。该第一终端生成需要辐射的数据信息，并对该数据进行处理，该第一终端通过发射线圈生成携带该数据的低频磁信号，并通过低频率的交变磁场方式将该低频磁信号发射至第二终端。第二终端根据生成的触发指令，控制第二终端内置的磁传感器工作，该磁传感器感应外部低频磁信号，当该磁传感器感应到低频磁信号后，第二终端判断该低频磁信号是否携带数据信息，若该低频磁信号不携带数据信息，如静态地磁信号，则不对其进行处理，第二终端再次控制磁传感器感应外部低频磁信号，若该低频磁信号携带数据信息，则第二终端读取通过磁传感器转换的电信号，对该电信号进行滤波运算，对滤波后的数据信息进行解码、解调后恢复数据比特信息，获取该低频磁信号携带的数据信息。该数据信息可以为商场的优惠券业务、地铁广告推送业务等数据信息，用户仅通过终端就能获取相关业务数据信息，从而可以实现第一终端到第二终端的快速数据信息传递，比二维码扫描更加方便快捷，能够实现快捷数据通信或进行网络交易。
在上述技术方案中，在上述技术方案中，该数据还可以为射频通信参数，第一终端将携带该射频通信参数的低频磁信号发射之后，该第一终端根据射频通信参数配置其射频通道，启动第一终端的射频通道工作，该第一终端对第二终端发射的射频信号进行监测。第二终端根据生成的触发指令，控制第二终端内置的磁传感器工作，该磁传感器感应外部低频磁信号，当该磁传感器感应到低频磁信号后，第二终端判断该低频磁信号是否携带射频通信参数，若该低频磁信号不携带射频通信参数，如静态地磁信号，则不对其进行处理，第二终端再次控制磁传感器感应外部低频磁信号，若该低频磁信号携带射频通信参数，则第二终端读取通过磁传感器转换的电信号，对该电信号进行滤波运算，对滤波后的数据信息进行解码、解调后恢复数据比特信息，获取该低频磁信号携带的射频通信参数，获取该低频磁信号携带的射频通信参数，第二终端根据获取的射频通信参数，配置其射频通道，启动第二终端的射频通道工作，并通过该射频通道发射射频信号至第一终端。若该第一终端监测到第二终端发射的射频信号时，则与第二终端建立射频通信，否则进入下一轮的建立连接过程，再发射低频磁信号至第二终端。
一般而言，终端内置磁传感器用作指南针、罗盘等应用，利用地球自身的静态磁场分布特点实现方向的指向。通过终端内置的磁传感器，该磁传感器能够探测交变磁场信号，从而在不更改、置换终端的基础上，实现在近距离情况下的通信，如商场的优惠券业务、地铁广告推送业务等，用户仅通过终端就能获取相关业务数据信息，降低了用户成本，提高了稳定性，并且由于具备大量的用户群基础，从而降低了推广门槛。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。
Claims (13)
- 一种终端，所述终端自身具有低频磁感应模块，其特征在于，还包括：触发模块，用于生成触发指令；所述低频磁感应模块，用于根据所述触发模块生成的触发指令，感应外部低频磁信号；判断模块，用于判断所述低频磁感应模块感应的低频磁信号是否携带数据信息；第一处理模块，用于当所述判断模块判断为是时，对所述低频磁信号进行处理，获取其携带的数据信息。
- 根据权利要求1所述的终端，其特征在于，所述数据信息为射频通信参数；所述终端还包括：第一射频模块，用于根据所述第一处理模块获取的射频通信参数，与对端设备建立射频通信。
- 根据权利要求1所述的终端，其特征在于，所述低频磁感应模块感应的低频磁信号的频率为10Hz至1MHz。
- 根据权利要求1所述的终端，其特征在于，所述低频磁感应模块感应的低频磁信号的强度为阶梯变化的，且高于地磁强度。
- 一种近距离通信的方法，其特征在于，包括：生成触发指令；根据所述触发指令，感应外部低频磁信号；判断所述低频磁信号是否携带数据信息；当判断为是时，对所述低频磁信号进行处理，获取其携带的数据信息。
- 根据权利要求5所述的近距离通信的方法，其特征在于，所述数据信息为射频通信参数；还包括：根据所述射频通信参数，与对端设备建立射频通信。
- 一种终端，其特征在于，包括：第二处理模块，用于生成数据信息；低频磁发射模块，用于生成携带所述第二处理模块生成的数据信 息的低频磁信号，并发射所述低频磁信号。
- 根据权利要求7所述的终端，其特征在于，所述数据信息为射频通信参数；所述终端还包括：第二射频模块，用于监测对端设备发射的射频信号，并与对端设备建立射频通信。
- 根据权利要求7所述的终端，其特征在于，所述磁发射模块发射的低频磁信号的频率为10Hz至1MHz。
- 根据权利要求7所述的终端，其特征在于，所述磁发射模块发射的低频磁信号的强度为阶梯变化的，且高于地磁强度。
- 根据权利要求7所述的终端，其特征在于，所述磁发射模块用于发射所述低频磁信号的磁场为一维单向磁场、两维平面磁场或三维立体磁场。
- 一种近距离通信的方法，其特征在于，包括：第一终端生成数据信息；生成携带所述数据信息的低频磁信号，并发射所述低频磁信号；第二终端生成触发指令；根据所述触发指令，感应外部低频磁信号；判断所述低频磁信号是否携带数据信息；当判断为是时，对所述低频磁信号进行处理，获取其携带的数据信息。
- 根据权利要求12所述的近距离通信的方法，其特征在于，所述数据信息为射频通信参数；还包括：所述第一终端根据获取的射频通信参数，与第二终端建立射频通信；所述第二终端监测所述第一终端发射的射频信号，并与所述第一终端建立射频通信。
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