CN102412869B

CN102412869B - System and method for fast accessing near field communication with controllable communication range

Info

Publication number: CN102412869B
Application number: CN201010288016.9A
Authority: CN
Inventors: 余运波; 朱杉
Original assignee: Nationz Technologies Inc
Current assignee: Nationz Technologies Inc
Priority date: 2010-09-21
Filing date: 2010-09-21
Publication date: 2014-05-28
Anticipated expiration: 2030-09-21
Also published as: CN102412869A; WO2012037751A1

Abstract

The invention relates to a system and a method for fast accessing high-efficiency near field communication with a controllable communication range. The system comprises at least one master module and at least one slave module, wherein the master module is used for sending a distance reference signal which includes master module information and communication distance information; the slave module is used for judging whether the distance between the master module and the slave module is in accordance with a preset range according to the received distance reference signal; and if the distance between the master module and the slave module is in accordance with the preset range, wireless communication connection between the master module and the slave module is established according to a preset protocol, and data exchange between the master module and the slave module is realized. A reference unit and a measuring unit communicate with each other by adopting a low-frequency magnetic signal or an ultrasonic wave signal, so a requirement for near access can be met. By the system and the method, instant, fast and high-efficiency wireless data exchange within a specific distance range is realized.

Description

Control quick access low coverage wireless communication system and the method for communication range

Technical field

The present invention relates to the communications field, relate in particular to the system and method for the controlled efficient low coverage radio communication of quick access of a kind of communication range.

Background technology

On current computer or mobile device, use in a large number high-speed radio transmission to carry out exchanges data, commonplace use be Wi-Fi(IEEE802.11a/b/g/n standard), bluetooth, Zigbee(IEEE802.15.4 standard), UWB(Ultra Wideband, super wideband wireless transmission) etc. technology.These high-speed radiocommunications make can carry out information exchange and function sharing etc. between intercomputer or mobile device, and user can realize files in stream media transmission, address list exchange, the operation of share and access internet in these mobile devices.These technology for be all long-time, multiple users, compared with the exchanges data application of far range (more than 10 meters); Using when this technology, user needs to carry out comparatively complicated configuration, as first use needs loaded down with trivial details setting, reuses and need to spend a period of time and wait for and find main frame and connect etc.In addition, these technology are owing to will consider that multiple users work and the factor such as radiofrequency signal poor quality simultaneously, and it has generally all defined complicated LMP Link Manager Protocol in communication process, and these protocol overheads cause wireless channel utilance not high.

Current, along with mobile electronic device variation and be widely used, between two equipment, the application demand of Instantaneous sharing data is more and more stronger.Distance between two equipment of conventionally shared data is nearly (in 1 meter) very, but require exchanges data very quick, timely and efficient, for example enter main equipment setting range from being dynamically connected and transmitting data from equipment, shift out setting range and automatically cut off connection etc.And the existing communication technology all can not meet in this short range user immediately, the requirement of swap data fast and efficiently.

In prior art, can in limited range, carry out wireless communication system and mainly contain RFID radio frequency identification systems.RFID radio-frequency (RF) tag has respectively 13.56MHz, 800-900MHz, 2.4GHz etc. by frequency categorization, and wherein 13.56M label reading/writing distance is less than 10 centimetres, and other two kinds can arrive several meters.And all there are two problems in these rfid systems: the too low and communication distance of traffic rate cannot be controlled flexibly; And label-side is all taked passive mode, very high to the transmitting power requirement of card reader, be not easy to be integrated in light mobile electronic device.

Summary of the invention

Technical problem to be solved by this invention is to provide system, the tool and method of the controlled efficient low coverage radio communication of quick access of a kind of communication context, make the various equipment rooms with high-speed radiocommunication function not need to rely on complicated access procedure, loaded down with trivial details setting and the data exchange agreement expense of poor efficiency, quick access and efficient communication that can be in specific distance range.

The technical scheme that the present invention solves the problems of the technologies described above is as follows:

Control a quick access low coverage wireless communication system for communication range, comprise that at least one primary module and at least one are from module; Described primary module is used for sending first apart from reference signal; Describedly described first judge apart from reference signal whether primary module and the distance from intermodule meet preset range from module according to what receive, if satisfied, described primary module is connected according to preset protocol Rapid Establishment radio communication with from module and carries out exchanges data;

Described primary module and send the first speed apart from reference signal higher than described primary module from the speed connecting according to preset protocol Rapid Establishment radio communication between module and carry out exchanges data;

Described first contains primary module information and communication distance information apart from reference signal; Described primary module comprises: reference cell, the first wireless communication unit and control described reference cell and the primary module control unit of the first wireless communication unit work; Describedly comprise from module: determination unit, the second wireless communication unit and control described determination unit and the second wireless communication unit work from module control unit; Described reference cell is for sending first apart from reference signal to described determination unit; Described determination unit judges apart from reference signal whether primary module and the distance from intermodule meet preset range according to receive from described reference cell first, if met, sends to from module control unit apart from the primary module information containing in reference signal first; Described from module control unit receives primary module information, play primary module by the first wireless communication unit and the second wireless communication unit according to preset protocol Rapid Establishment and connect and carry out exchanges data from the radio communication between module;

High-speed radiocommunication unit access parameter between the first wireless communication unit and the second wireless communication unit mainly comprises the SSID(service set of access channel, primary module), physical address, key or the certificate etc. of primary module, these parameters are mainly sent by the reference cell in primary module, by determination unit from module, within the scope of agreement, (as 1 meter) receives, from these parameters of module parses, and relevant parameter is set is connected with primary module; After connection, carry out authentication mutually by key or certificate and determine whether to carry out subsequent exchange of data.

The quick access low coverage wireless communication system of the control communication range in the present invention, its beneficial effect is: described system realized within the scope of predeterminable range immediately, radio communication and exchanges data fast and efficiently; Utilize communication distance information as access necessary condition, make the communication distance condition that meets regulation from equipment of access can set up immediately, fast and efficiently primary module and from the radio communication between module and carry out exchanges data, thereby can greatly simplify pre-configured between the required master-slave equipments of existing communication technology such as current Wi-Fi, bluetooth, and the problem such as the addressing needing in existing communication technology, handshake authentication, complicated exchange agreement expense, for instant exchanges data between electronic equipment provides very big facility.Realize and utilized low speed transmissions passage to adopt the form of Distance Judgment to set up high speed data transfer passage.First contains primary module information and communication distance information apart from reference signal is convenient to the determining and Distance Judgment primary module from module, primary module and between module respectively at primary module control unit with from the control of module control unit, utilize described reference cell and determination unit to realize the described first transmission apart from reference signal and distance confirmation, when receiving primary module information from module control unit, can connect and carry out exchanges data according to primary module preset protocol Rapid Establishment with from the radio communication between module by the first wireless communication unit and the second wireless communication unit, whole access procedure between module and primary module is simple, only need determining communication distance, primary module and pre-configured from module are simplified greatly.

For the technical scheme of the quick access low coverage wireless communication system of above-mentioned control communication range, can also do and further improve as follows.

Further, described reference cell comprises the first microcontroller in sequential series, the first coding circuit, the first drive circuit and the first emission of magnetic field coil; Described the first microcontroller is used for controlling the first coding circuit and the first drive circuit; Described the first coding circuit is used for the wireless data frame of primary module information to carry out by bits of encoded, and sends the first drive circuit to; Described the first drive circuit is for driving the first emission of magnetic field coil; Described the first emission of magnetic field coil is for generation of first sending apart from reference signal and with magnetic signal form of containing primary module information;

Described determination unit comprises the first magnetic conduction circuitry in sequential series, the first amplifying circuit, the first thresholding judgement and demodulator circuit and the second microcontroller; Described the first magnetic conduction circuitry for respond to receive magnetic signal form first apart from reference signal and convert thereof into electrical signal form, and send the first amplifying circuit to; Described the first amplifying circuit judges and demodulator circuit for amplifying and send the first thresholding to apart from reference signal first; Described the first thresholding judgement and demodulator circuit are used for judging whether first reach predetermined threshold value apart from reference signal, if reached predetermined threshold value, send the second microcontroller by first to apart from the primary module information in reference signal; Described the second microcontroller is used for controlling the first magnetic conduction circuitry, the first amplifying circuit and the judgement of the first thresholding and demodulator circuit, and the primary module information receiving is sent to described from module control unit.

Above-mentioned further scheme provides a kind of concrete scheme that carries out Distance Judgment apart from benchmark magnetic signal that adopts, by the transmitting power of pre-set magnetic signal, make can directly react primary module and from the communication distance between module from default distance threshold value in the middle of module, thereby be convenient to carry out Distance Judgment from module.

Further, described reference cell also comprises the first modulation circuit being arranged between the first coding circuit and the first drive circuit; Described the first modulation circuit, for the primary module information after the first coding circuit coding is modulated, and sends the first drive circuit to.

Adopt the beneficial effect of above-mentioned further scheme to be, make first can better be received from module apart from reference signal by modulation, avoid first lose and cause primary module and send not smooth from first between module apart from reference signal in when transmission apart from reference signal.

Further, described determination unit also comprises the second coding circuit, the second drive circuit and the second emission of magnetic field coil; Described the second microcontroller, the second coding circuit, the second drive circuit and the second emission of magnetic field coil are in sequential series; Described the second microcontroller is used for controlling the second coding circuit and the second drive circuit; Described the second coding circuit is used for the wireless data frame from module information to carry out by bits of encoded, and sends the second drive circuit to; Described the second drive circuit is for driving the second emission of magnetic field coil; Described the second emission of magnetic field coil is for generation of containing from the second distance reference signal of module information and sending with magnetic signal form;

Described reference cell also comprises the second magnetic conduction circuitry, the second amplifying circuit and the judgement of the second thresholding and demodulator circuit, and described the second magnetic conduction circuitry, the second amplifying circuit, the second thresholding judgement and demodulator circuit and the first microcontroller are in sequential series; Described the second magnetic conduction circuitry receives the second distance reference signal of magnetic signal form and converts thereof into electrical signal form for responding to, and sends the second amplifying circuit to; Described the second amplifying circuit judges and demodulator circuit for second distance reference signal being amplified and sending the second thresholding to; Described the second thresholding judgement and demodulator circuit are used for judging whether second distance reference signal reaches predetermined threshold value, if reached predetermined threshold value, will in second distance reference signal, send the first microcontroller to from module information; Described the first microcontroller is used for controlling the second magnetic conduction circuitry, the second amplifying circuit and the judgement of the second thresholding and demodulator circuit, and sends described primary module control unit by what receive to from module information.

Adopt above-mentioned further scheme, primary module in the quick access low coverage wireless communication system of control communication range of the present invention is to sending the first basis apart from reference signal from module, thereby also can be simultaneously sends second distance reference signal and realize two-way communication and the two-way judgement of the distance benchmark magnetic signal between reference cell and determination unit to primary module from module.

Further, described determination unit also comprises the second modulation circuit being arranged between the second coding circuit and the second drive circuit; Described the second modulation circuit is used for modulating from module information after the second coding circuit coding, and sends the second drive circuit to.

Further, described first is low-frequency magnetic signal apart from reference signal.

Adopt the beneficial effect of above-mentioned further scheme to be, adopt magnetic signal, can use magnetic flux density Physical Quantity Calculation communication distance.Magnetic flux density is R with communication distance R ^-3decay, and decay while adopting low-frequency magnetic signal to penetrate different objects is little, antijamming capability is strong, the robustness of magnetic flux letter is good, make primary module and between module first send apart from reference signal safe.

Further, the frequency of described low-frequency magnetic signal is 500Hz, 1KHz, 1.5KHz, 2KHz, 2.5KHz, 3KHz, 4KHz, 5KHz, 10KHz, 20KHz, 30KHz or 10MHz.

Further, described second distance reference signal is low-frequency magnetic signal.

Further, described reference cell comprises at least three ultrasound transmitter device and at least one modulation and startup control device, and described modulation and startup control device are connected with ultrasound transmitter device respectively; Described modulation and startup control device are for primary module information is modulated into first apart from reference signal, and at least three ultrasound transmitter device described in simultaneously starting; Described at least three ultrasound transmitter device for send respectively different frequency ultrasonic wave form first apart from reference signal; Described determination unit comprises at least three ultrasonic receivers and at least one demodulation and time comparison means, and described ultrasonic receiver is connected with demodulation and time comparison means respectively; The different ultrasonic frequencies that described at least three ultrasonic receivers send at least three ultrasound transmitter device described in receiving respectively simultaneously first apart from reference signal, and send demodulation and time comparison means by described first to apart from reference signal; Described demodulation and time comparison means for different ultrasonic frequencies of demodulation respectively first apart from reference signal, and judge whether primary module and the distance from intermodule meet preset range according to first of different ultrasonic frequencies the time difference that arrives described determination unit apart from reference signal, if met, send to from module control unit apart from the primary module information containing in reference signal first.

Above-mentioned further scheme provides a kind of first of ultrasonic wave form that adopts to carry out the concrete scheme of Distance Judgment apart from reference signal.Adopt ultrasonic signal, can use the time Physical Quantity Calculation communication distance of ultrasonic signal.The speed of ultrasonic propagation is slower, can calculate the distance of ultrasonic communication by comparing the time difference of sending and receiving.Adopt at least three ultrasound transmitter device to send the ultrasonic signal of different frequency simultaneously, and primary module information exchange is crossed to the mode such as OOK or FSK be modulated in ultrasonic wave, from module, receive respectively at least three ultrasonic signals, the time difference arriving by more at least three ultrasonic waves just can calculate primary module and from the communication distance between module.

Further, described reference cell comprises three ultrasound transmitter device and a modulation and starts control device; Described determination unit comprises three ultrasonic receivers and demodulation and time comparison means.

Adopt the beneficial effect of above-mentioned further scheme to be, comparison means minimum number guarantee to calculate primary module and from communication distance between module between ultrasound transmitter device, modulation and starting drive, ultrasonic receiver and the demodulation of use in time.

Further, described first is ultrasonic signal apart from reference signal.

Adopt the beneficial effect of above-mentioned further scheme to be, can realize accurate communication distance control, communication controlled range can reach several meters even farther, also can be at 1 meter, even in 10 cm range, accurately control communication etc. for 0.5 meter, adopt ultrasonic wave scheme both can adapt on desktop mutually instant between electronic equipment, exchange high speed data, also can adapt between vehicle, instant between vehicle and gate etc. under applicable cases, high-speed data exchange, and between the signal of communication between ultrasonic wave and the first wireless communication unit and the second wireless communication unit, phase mutual interference is less.

Further, described the first wireless communication unit and the second wireless communication unit are Wi-Fi module, bluetooth module or UWB module.

Adopt the beneficial effect of above-mentioned further scheme to be, primary module and can use various ways with communicating by letter from carrying out exchanges data between module, meets various ways communication requirement.

Further, between described the first wireless communication unit and the second wireless communication unit, wireless communication frequency band is 433MHz, 900MHz, 2.4GHz, 5.8GHz or 60GHz.

Adopt the beneficial effect of above-mentioned further scheme to be, realize high speed communication and exchanges data.

Further, describedly first judge that apart from reference signal primary module and the distance from intermodule meet preset range from module according to what receive, first send and determine signal to primary module from module, primary module stops sending described first apart from reference signal according to definite signal of receiving, and primary module is connected according to preset protocol Rapid Establishment radio communication with from module again and carries out exchanges data.

Further, describedly first judge that apart from reference signal primary module and the distance from intermodule meet preset range from module according to what receive, first stop receiving described first apart from reference signal from module, primary module is connected according to preset protocol Rapid Establishment radio communication with from module again and carries out exchanges data.

Adopt the beneficial effect of above-mentioned further scheme to be, after carrying out Distance Judgment at primary module with between module with set up that radio communication is connected and carry out exchanges data before, cut off the first transmission apart from reference signal, thereby anti-stop signal interferes with each other, improve efficiency of transmission and certainty of measurement, device structure is simple to operation, and can save system resource.

Further, described primary module and being arranged at respectively different main frames from module.

Adopt the beneficial effect of above-mentioned further scheme to be, make to set up between main frame one immediately, communication connection fast and efficiently, when two main frames distance each other meets the scope that mutual signal post stipulates, can automatically connect and mutually communicate by letter, greatly simplify pre-configured between the needed main frames of existing short-range communication technique such as current Wi-Fi, bluetooth, and the problem such as the addressing needing in existing communication technology, handshake authentication, complicated exchange agreement expense.

Further, described main frame is intelligent terminal and/or intelligent transportation instrument.

Further, described intelligent terminal is desktop computer, notebook computer, panel computer, palmtop PC, mobile phone, digital camera, Digital Video, electronic reader, audio and video display device or DPF; Described intelligent transportation instrument is for intelligent automobile or with automobile, train, aircraft or steamer that data interaction function is provided.

Adopt the beneficial effect of above-mentioned further scheme to be, the quick access low coverage wireless communication system of control communication range of the present invention can be applied to plurality of devices, as the communication between mobile phone and mobile phone, communicating by letter between digital camera and DPF, between computer and mobile phone, the communicating by letter between all kinds of intelligent terminals such as between computer and electronic reader, and as communication terminal and intelligent automobile, or communication terminal and the automobile of data, services is provided, train, communication between the vehicles such as aircraft or steamer, thereby meet the growing information requirement of people, people can and/or be carried out alternately with the vehicles that data, services is provided with other intelligent terminal around whenever and wherever possible, make the data message that obtains that people can be more convenient.

Further, described primary module sends first and carries out when being connected according to preset protocol Rapid Establishment radio communication with from module and carrying out exchanges data difference apart from reference signal and described primary module.

Adopt the beneficial effect of above-mentioned further scheme to be, anti-stop signal interferes with each other, and improves efficiency of transmission and certainty of measurement, and device structure is simple to operation, and can save system resource.

Further, described primary module transmission first is connected according to preset protocol Rapid Establishment radio communication with from module prior to described primary module apart from reference signal and carries out exchanges data and carry out.

Further, described primary module sends first discontinuously apart from reference signal, described primary module and carry out fast data exchange from module between described transmission first is apart from reference signal.

A kind of quick access low coverage wireless communications method of controlling communication range provided by the invention, comprises the steps:

Steps A: primary module transmission range reference signal, receives apart from reference signal described from module, and perform step B;

Step B: judge from the distance between module and primary module whether meet preset range, "Yes" performs step C if, otherwise execution step A;

Step C: primary module and set up radio communication between module, carries out exchanges data;

Describedly contain primary module information and communication distance information apart from reference signal;

Described step C comprises:

Step C1: describedly cross the definite link information of the second wireless communication unit to primary module passback from equipment from module according to received primary module information exchange;

Step C2: described primary module receives described definite link information by the first wireless communication unit, and set up primary module and from the radio communication between module by the first wireless communication unit and the second wireless communication unit;

Or described step C comprises:

Described step C comprises:

Step C1 ': describedly cross the definite link information of the second wireless communication unit to primary module passback from equipment from module according to received primary module information exchange;

Step C2 ': described primary module receives described definite link information by the first wireless communication unit, and stops transmission range reference signal;

Step C3 ': set up primary module and from the radio communication between module by the first wireless communication unit and the second wireless communication unit;

Wherein, in described definite link information, comprise described primary module information;

Or described step C comprises:

Step C1 ' ': describedly stop receiving range reference signal from module;

Step C2 ' ': describedly cross the definite link information of the second wireless communication unit to primary module passback from equipment from module according to received primary module information exchange;

Step C3 ' ': described primary module receives described definite link information by the first wireless communication unit, and set up primary module and from the radio communication between module by the first wireless communication unit and the second wireless communication unit;

Wherein, in described definite link information, comprise described primary module information.

Adopt the quick access low coverage wireless communications method of control communication range as above, realize primary module and from instant within the scope of predeterminable range between module, fast, wireless data exchange efficiently, thereby realize with primary module with from instant within the scope of predeterminable range between the main frame of module, fast, wireless data exchange efficiently, greatly simplify current Wi-Fi, pre-configured between the required master-slave equipment of the existing short-range communication technique such as bluetooth, and the addressing needing in existing communication technology, handshake authentication, the problems such as complicated exchange agreement expense, for instant exchanges data between electronic equipment provides very big facility.Realize primary module and confirmed from the connection between module, and having started to carry out radio communication.After carrying out Distance Judgment at primary module with between module with set up that radio communication is connected and carry out exchanges data before, stop primary module and transmission or reception from distance reference signal between module, with the Distance Judgment stopping, thereby anti-stop signal interferes with each other, improve efficiency of transmission and certainty of measurement, device structure is simple to operation, and can save system resource.

Further, describedly contain primary module information and communication distance information apart from reference signal;

Described steps A comprises:

Steps A 1: described primary module converts primary module information to the distance reference signal of low-frequency magnetic signal form, and sends described low-frequency magnetic signal, and performs step A2;

Steps A 2: describedly receive low-frequency magnetic signal convert thereof into the signal of telecommunication from module, and perform step B;

Described step B comprises:

Step B1: determine primary module according to primary module information contained the signal of telecommunication from module;

Step B2: from module, the signal of telecommunication is carried out to threshold value judgement, perform step C if the magnitude of voltage of the signal of telecommunication is more than or equal to default threshold value, otherwise execution step A1.

Adopt the beneficial effect of above-mentioned further scheme to be, contain primary module information and communication distance information apart from reference signal and be convenient to the determining and Distance Judgment primary module from module; Realize and adopted magnetic signal to carry out transmission and the Distance Judgment apart from reference signal.

Described steps A comprises:

Steps A 1 ': described primary module converts primary module information to the distance reference signal of the ultrasonic signal form of at least three kinds of different frequencies, and the ultrasonic signal of at least three kinds of different frequencies described in simultaneously sending, and performs step A2 ';

Steps A 2 ': the described ultrasonic signal from least three different frequencies described in module reception, and record the ultrasonic signal arrival of different frequency from the time difference of module, and perform step B;

Described step B comprises:

Step B1 ': describedly from module, ultrasonic signal is carried out to demodulation, and obtain primary module information, determine primary module according to described primary module information;

Step B2 ': describedly arrive from the time difference of module and calculate from the distance between module and primary module and judge primary module and whether meet preset range from the distance of intermodule according to the ultrasonic signal of at least three different frequencies from module, if satisfied perform step C, otherwise execution step A1 '.

Adopt the beneficial effect of above-mentioned further scheme to be, realized and adopted ultrasonic signal to carry out transmission and the Distance Judgment apart from reference signal.

Further, in described definite link information, comprise described primary module information.

Adopt the beneficial effect of above-mentioned further scheme to be, in the time that affiliated primary module is received the definite link information that includes described primary module information, can by described primary module information determine from module be receive primary module send apart from reference signal and determine be in default communication distance from module, thereby determine the uniqueness from module, make from module not counterfeitingly, and guarantee primary module and the safety from radio communication between module.

Further, when described primary module transmission range reference signal and described primary module are connected according to preset protocol Rapid Establishment radio communication with from module and carry out exchanges data difference, carry out.

Further, described primary module transmission range reference signal is connected according to preset protocol Rapid Establishment radio communication with from module prior to described primary module and carries out exchanges data and carry out.

Further, described primary module is transmission range reference signal discontinuously, described primary module and carry out fast data exchange from module between described transmission range reference signal.

Accompanying drawing explanation

Fig. 1 is the structural representation of controlling the quick access low coverage wireless communication system of communication range in the present invention;

Fig. 2 is that the quick access low coverage wireless communication system of controlling communication range in the present invention adopts one-way communication structure chart between the reference cell of magnetic signal embodiment and determination unit;

Fig. 3 is that the quick access low coverage wireless communication system of controlling communication range in the present invention adopts two-way communication structure chart between the reference cell of magnetic signal embodiment and determination unit;

Fig. 4 is that the quick access low coverage wireless communication system of controlling communication range in the present invention adopts the communication structure figure between reference cell and the determination unit of ultrasonic signal embodiment;

Fig. 5 is the flow chart of controlling the quick access low coverage wireless communications method of communication range in the present invention;

Fig. 6 is a kind of execution mode schematic diagram of controlling the data exchange process of the quick access low coverage wireless communications method of communication range in the present invention;

Fig. 7 is the flow chart of controlling the quick access low coverage wireless communications method employing magnetic signal communication mode of communication range in the present invention;

Fig. 8 is the flow chart of controlling the quick access low coverage wireless communications method employing ultrasonic signal communication mode of communication range in the present invention;

Fig. 9 is primary module and the first pass figure from establishing a communications link between module in the quick access low coverage wireless communications method of control communication range of the present invention;

Figure 10 is primary module and the second flow chart from establishing a communications link between module in the quick access low coverage wireless communications method of control communication range of the present invention;

Figure 11 is primary module and the 3rd flow chart from establishing a communications link between module in the quick access low coverage wireless communications method of control communication range of the present invention.

In accompanying drawing, the list of parts of each label representative is as follows:

1, primary module, 2, from module, 101, primary module control unit, 102, reference cell, 103, the first wireless communication unit, 201, from module control unit, 202, determination unit, 203, the second wireless communication unit, 1021, the first microcontroller, 1022, forward transmitting element, 2021, the second microcontroller, 2022, forward receives judging unit, 10221, the first coding circuit, 10222, the first drive circuit, 10223, the first emission of magnetic field coil, 10224, the first modulation circuit, 20221, the first magnetic conduction circuitry, 20222, the first amplifying circuit, 20223, the first thresholding judgement and demodulator circuit, 2023, oppositely transmitting element, 1023, oppositely receive judging unit, 20231, the second coding circuit, 20232, the second drive circuit, 20233, the second emission of magnetic field coil, 20234, the second modulation circuit, 10231, the second magnetic conduction circuitry, 10232, the second amplifying circuit, 10233, the second thresholding judgement and demodulator circuit, 1023, modulation and startup control device, 1024, the first ultrasound transmitter device, 1025, the second ultrasound transmitter device, 1026, the 3rd ultrasound transmitter device, 2023, demodulation and time comparison means, 2024, the first ultrasonic receiver, 2025, the second ultrasonic receiver, 2026, the 3rd ultrasonic receiver

Embodiment

Below in conjunction with accompanying drawing, principle of the present invention and feature are described, illustrated embodiment, only for explaining the present invention, is not intended to limit scope of the present invention.

Fig. 1 is the structural representation of controlling the quick access low coverage wireless communication system of communication range in the present invention.This system comprises primary module 1 and from module 2; Wherein, primary module 1 for send contain primary module information and communication distance information first apart from reference signal; Judge primary module 1 and whether meet preset range from the distance between module 2 apart from reference signal according to receive first from module 2, if satisfied, primary module 1 is connected according to preset protocol Rapid Establishment radio communication with from module 2 and carries out exchanges data.Wherein, primary module 1 and send the first speed apart from reference signal higher than primary module 1 from the speed connecting according to preset protocol Rapid Establishment radio communication between module 2 and carry out exchanges data.

As shown in Figure 1, primary module 1 comprises the primary module control unit 101 that reference cell 102, the first wireless communication unit 103 and control reference cell 102 and the first wireless communication unit 103 are worked; Comprise determination unit 202, the second wireless communication unit 203 and control determination unit 202 and the second wireless communication unit 203 is worked from module control unit 201 from module 2.Wherein, between reference cell 102 and determination unit 202, there is the forward communication port from reference cell 102 to determination unit 202, also can have as required the reverse channel communication from determination unit 202 to reference cell 102 directions; Between the first wireless communication unit 103 and the second wireless communication unit 203, there is bidirectional high speed radio communication channel.Reference cell 102 is for sending first apart from reference signal to determination unit 202 by forward communication port; Determination unit 202 also can be for sending second distance reference signal to reference cell 102 by reverse link communication passage as required.Determination unit 202 for receive that reference cell 102 sends first apart from reference signal, judge primary module 1 and whether meet preset range from the distance between module 2; If meet, send to from module control unit 201 apart from the primary module information containing in reference signal first; From module control unit 201 receives primary module information, play primary module 1 by the first wireless communication unit 103 and the second wireless communication unit 203 according to preset protocol Rapid Establishment and connect and carry out exchanges data from the radio communication between module 2.Certainly, as required, determination unit 202 and reference cell 102 also can have respectively the function of said reference unit 102 and determination unit 202, and determination unit 202 can send second distance reference signal to reference cell 102 by reverse link communication passage; Correspondingly primary module control unit 101 and can there is control function each other to realize primary module 1 and from the range determination between module 102 from module control unit 201.The first wireless communication unit 103 and the second wireless communication unit 203 carry out respectively radio communication at primary module control unit 101 with from the control of module control unit 201.

In the present invention, the first wireless communication unit 103 and the second wireless communication unit 203 can adopt Wi-Fi module, bluetooth module or the UWB module of 2.4GHz frequency range, to realize high-speed radio communication and the exchanges data between them; Also can adopt other frequency, for example 433MHz, 900MHz, 5.8GHz and 60GHz etc.

High-speed radiocommunication unit access parameter between the first wireless communication unit 103 and the second wireless communication unit 203 mainly comprises the SSID(service set of access channel, primary module 1), physical address, key or the certificate etc. of primary module 1.These parameters are mainly sent by the reference cell 102 in primary module 1, are received by determination unit 202 from module 2 (as 1 meter) within the scope of agreement.Resolve these parameters from module 2, and relevant parameter is set is connected with primary module 1; After connection, carry out authentication mutually by key or certificate and determine whether to carry out subsequent exchange of data.

As required, the communication between reference cell 102 and determination unit 202 can adopt magnetic signal communication mode, ultrasonic signal communication mode etc.The following stated describes the communication between reference cell 102 and determination unit 202 as an example of magnetic signal communication mode and ultrasonic signal communication mode example respectively.

Magnetic signal communication embodiment

As shown in Figure 2, reference cell 102 is magnetic signal reference cell, and determination unit 202 is magnetic signal determination unit, and what reference cell 102 sent to determination unit 202 first is magnetic signal form apart from reference signal.Wherein, reference cell 102 comprises the first microcontroller 1021, the first coding circuit 10221, the first drive circuit 10222 and the first emission of magnetic field coil 10223 in sequential series; Wherein the first microcontroller 1021 is for controlling the first coding circuit 10221 and the first drive circuit 10222; The first coding circuit 10221, the first drive circuit 10222 and the first emission of magnetic field coil 10223 have formed the first forward transmitting element 1022 apart from reference signal for sending magnetic signal form.Determination unit 202 comprises the first magnetic conduction circuitry 20221, the first amplifying circuit 20222, the first thresholding judgement and demodulator circuit 20223 and the second microcontroller 2021 in sequential series; Wherein the second microcontroller 2021 is for controlling the first magnetic conduction circuitry 20221, the first amplifying circuit 20222, the first thresholding judgement and demodulator circuit 20223; The first magnetic conduction circuitry 20221, the first amplifying circuit 20222, the first thresholding judgement and demodulator circuit 20223 have formed forward and have received judging unit 2022.Forward receives judging unit 2022 for receiving magnetic signal and judging primary module 1 and whether meet preset range from the distance between module 2, if meet, send the second microcontroller 2021, the second microcontrollers 2021 by first to apart from the primary module information containing in reference signal primary module information is sent to from module control unit 201.

Particularly, the first coding circuit 10221 in forward transmitting element 1022 is for the wireless data frame of primary module information is carried out by bits of encoded, and sends the first drive circuit 10222 to; The first drive circuit 10222 is for the first emission of magnetic field coil 10223 is driven, to produce low frequency alternating magnetic field; The first emission of magnetic field coil 10223 is for generation of first sending to from module 2 apart from reference signal and with magnetic signal form of containing primary module information.

Forward receive the first magnetic conduction circuitry 20221 in judging unit 2022 for respond to receive magnetic signal form that primary module 1 sends first apart from reference signal and convert thereof into electrical signal form; The first amplifying circuit 20222 is for amplifying apart from reference signal first of electrical signal form; The first thresholding judgement and demodulator circuit 20223 for example, for judging that whether electrical signal form first reaches predetermined threshold value (threshold voltage) apart from reference signal, if reached, sends the second microcontroller 2021 by first to apart from the primary module information in reference signal.

As required, forward transmitting element 1022 also can arrange the first modulation circuit 10224 between the first coding circuit 10221 and the first drive circuit 10222, for the primary module information after the first coding circuit 10221 codings is modulated, and send the first drive circuit 10222 to.

As required, can on the basis of one-way communication between the reference cell 102 shown in Fig. 2 and determination unit 202, expand, to realize the two-way communication between reference cell 102 and determination unit 202, its structure as shown in Figure 3.Determination unit 202 also comprises the second coding circuit 20231, the second drive circuit 20232 and the second emission of magnetic field coil 20233; Described the second microcontroller 2021, the second coding circuit 20231, the second drive circuit 20232 and the second emission of magnetic field coil 20233 are in sequential series; The second microcontroller 2021 is for controlling the second coding circuit 20231 and the second drive circuit 20232; The second coding circuit 20231, the second drive circuit 20232 and the second emission of magnetic field coil 20233 have formed for sending and have contained from module information with from the reverse transmitting element 2023 of the second distance reference signal of the magnetic signal form of module communication range information.Accordingly, reference cell 102 also comprises the second magnetic conduction circuitry 10231, the second amplifying circuit 10232 and the judgement of the second thresholding and demodulator circuit 10233; The second magnetic conduction circuitry 10231, the second amplifying circuit 10232, the second thresholding judgement and demodulator circuit 10233 and the first microcontroller 1021 are in sequential series; The first microcontroller 1021 is for controlling the second magnetic conduction circuitry 10231, the second amplifying circuit 10232 and the judgement of the second thresholding and demodulator circuit 10233; The second magnetic conduction circuitry 10231, the second amplifying circuit 10232 and the judgement of the second thresholding and demodulator circuit 10233 have formed reverse reception judging unit 1023.Oppositely receive judging unit 1023 for receiving the second distance reference signal of magnetic signal form and judging from the distance between module 2 and primary module 1 whether meet preset range, if met, send the first microcontroller 1021 by what contain in second distance reference signal to from module information; The first microcontroller 1021 will send primary module control unit 101 to from module information; Primary module control unit 101 receives from module information, plays primary module 1 and connect and carry out exchanges data from the radio communication between module 2 by the first wireless communication unit 103 and the second wireless communication unit 203 according to preset protocol Rapid Establishment.

Particularly, as shown in Figure 3, oppositely the second coding circuit 20231 in transmitting element 2023 is for the wireless data frame of primary module information is carried out by bits of encoded, and sends the second drive circuit 20232 to; The second drive circuit 20232, for the second emission of magnetic field coil 20233 is driven, produces the second low frequency alternating magnetic field; The second emission of magnetic field coil 20233 is for generation of containing from the second distance reference signal of module information and sending to primary module 1 with magnetic signal form.

The second magnetic conduction circuitry 10231 oppositely receiving in judging unit 1023 receives the second distance reference signal of the magnetic signal form sending from module 2 and converts thereof into electrical signal form for responding to; The second amplifying circuit 10232 is for amplifying the second distance reference signal of electrical signal form; The second thresholding judgement and demodulator circuit 10233 be for judging whether electrical signal form second distance reference signal reaches predetermined threshold value, if reached, will in second distance reference signal, send the first microcontroller 1021 to from module information.

As required, oppositely transmitting element 2023 also can arrange the second modulation circuit 20234 for modulating from module information after the second coding circuit 20231 is encoded between the second coding circuit 20231 and the second drive circuit 20232, and sends the second drive circuit 20232 to.

In this magnetic signal communication embodiment, magnetic conduction circuitry is by PCB(Printed Circuit Board, printed circuit board) circuit element that can induced field changes of coil, enamel wire coil, hall device or other forms; Thresholding judgement and demodulator circuit, do not reach not demodulation of thresholding and do not allow communication yet according to default distance threshold judgement magnetic detectable voltage signals, while reaching thresholding, signal are carried out to demodulation, and the signal after demodulation is given the second microcontroller.

In this magnetic signal communication embodiment, reference cell 102 and determination unit 202 can adopt low-frequency magnetic inductive communication circuit, optional 500Hz, 1KHz, 1.5KHz, 2KHz, 2.5KHz, 3KHz, 4KHz, 5KHz, 10KHz, 20KHz, 30KHz or the 10MHz of selecting of its corresponding frequency, utilizes the feature that low frequency alternating magnetic field penetration performance is good to carry out the controlled communication within the scope of predetermined distance.

The circuit that forward receives judging unit 2022 can adopt the formations such as PCB coil, enamel wire coil or hall device, giant magnetoresistance, magnetic induction switch conventionally.This circuit is not limited in these several elements.Any transducer that changes of magnetic field can be changed into the signal of telecommunication may be used to this module in principle, and unique restriction is can insert in the equipment that uses this unit.

In this magnetic signal communication embodiment, utilize low frequency alternating magnetic field to realize controlled communication distance scope, utilize high-speed radiocommunication passage realize primary module 1 in conjunction with reference cell 102 and determination unit 202 and be connected fast from the reliable of module 2, utilize the high-speed radiocommunication passage between the first wireless communication unit 103 and the second wireless communication unit 203 to realize primary module 1 and the data communication from high speed between module 2 simultaneously.It has following features: 1, the reference cell 102 of primary module 1 is launched low frequency alternating magnetic field signal, need to receive this field signal from 2 of modules, therefore can be by receiving coil or other receiving circuit miniaturization, be enough to meet and implant from the small and exquisite requirement of the mobile device of module 2; 2, due to receive signal a little less than, implant in the mobile device of module 2, need to increase amplifying circuit.Second wireless communication unit 203 of simultaneously inserting in mobile device in addition can be high-speed radiocommunication unit (Wi-Fi, bluetooth) thereby realizes bidirectional high speed communication.As previously mentioned, the antenna of the reference cell 102 on

primary module

1 and 202 circuit of the determination unit module 2 is very little, can be integrated into easily on mobile device.

According to the selected frequency of the present embodiment (500Hz, 1KHz, 1.5KHz, 2KHz, 2.5KHz, 3KHz, 4KHz, 5KHz, 10KHz, 20KHz, 30KHz or 10MHz), system is comparatively accurate at the following operating distance scope control of this frequency.As one expansion, system works more than frequency neither be not on your life at these, and possible effect is that the accuracy rating that distance is controlled reduces, and is a kind of extension application of performance change.

In present embodiment, system realizes Distance Judgment by pre-set threshold value, be that primary module is according to default emission parameter transmitting low-frequency magnetic signal, receive this low frequency signal and be converted to the signal of telecommunication from module 2, judging between module 2 and primary module 1 whether enter predefined coverage interval by predefined threshold value.This threshold value is to all identical from module 2, without for different from module 2 modify (i.e. so-called calibration).

In the present embodiment, the first modulation circuit 10224 or the second modulation circuit 20234 can adopt Different Modulations:

1) carrier modulation mode is modulated: the baseband signal that the first coding circuit 10221 or the second coding circuit 20231 produce is modulated carrier wave by the first modulation circuit 10224 or the second modulation circuit 20234, carrier wave can be sine wave, square wave and triangular wave etc., modulation can adopt switch frequency shift keying (OOK), phase shift keying, frequency shift keying (FSK) etc., and the signal after modulation is loaded on the first emission of magnetic field coil 10223 or the second emission of magnetic field coil 20233 by the first drive circuit 10222 or the second drive circuit 20232;

2) the direct baseband transmission of carrierfree: the baseband signal that the first coding circuit 10221 or the second coding circuit 20231 produce, is directly loaded on the first emission of magnetic field coil 10223 or the second emission of magnetic field coil 20233 by the first drive circuit 10222 or the second drive circuit 20232;

3) other modulation system: control because system of the present invention adopts the mode of threshold value judgement to carry out distance, therefore modulation system should not adopt amplitude modulation(PAM), and in every process of transmitting, can keep all can be for system of the present invention from the substantially invariable modulation system of the interior detection signal amplitude of module 2;

The first coding circuit 10221 or the second coding circuit 20231 can adopt Multi-encoding mode:

1) Manchester's code: bit 1 is encoded to two symbols 01, and bit 0 is encoded to 10.

2) Differential Manchester Encoding: have two kinds of bit symbol sequences: 01 and 10, bit 1 is encoded to different from a upper symbol sebolic addressing, and 0 of bit is identical, or coding also can conversely.

3) other coded system: control because system of the present invention adopts the mode of thresholding judgement to carry out distance, therefore low-frequency modulation signal should keep equal value stabilization.In a preferred embodiment, the sequence after coding does not contain DC component, and every coding coded system that average DC component is zero afterwards all can be for this preferred embodiment.

In above-mentioned specific implementation circuit, the first emission of magnetic field coil 10223 or the second emission of magnetic field coil 20233 can be enamel wire coil or PCB coil.The number of turn of the first emission of magnetic field coil 10223 or the second emission of magnetic field coil 20233 can be greater than 10 circles, and preferably, the number of turn is 50～500 circles.Preferably, the first emission of magnetic field coil 10223 or the interior filling of the second emission of magnetic field coil 20233 have FERRITE CORE or iron core.Preferably, the cross section of the first emission of magnetic field coil 10223 or the second emission of magnetic field coil 20233 area that surrounds at least comprises the square region of border circular areas or the 3cm × 3cm of diameter 3cm.

Ultrasonic signal communication embodiment

As shown in Figure 4, in the present embodiment, reference cell 102 comprises modulation and startup control device 1023, the first ultrasound transmitter device 1024, the second ultrasound transmitter device 1025 and the 3rd ultrasound transmitter device 1026, and modulation and startup control device 1023 are connected with the first ultrasound transmitter device 1024, the second ultrasound transmitter device 1025 and the 3rd ultrasound transmitter device 1026 respectively; Wherein, modulate and start control device 1023 for primary module information is modulated to first apart from reference signal, and starting the first ultrasound transmitter device 1024, the second ultrasound transmitter device 1025 and the 3rd ultrasound transmitter device 1026 to send the distance base signal of ultrasonic wave form simultaneously; The first ultrasound transmitter device 1024, the second ultrasound transmitter device 1025 and the 3rd ultrasound transmitter device 1026 are for sending respectively the ultrasonic signal of different frequency.Determination unit 202 comprises demodulation and time comparison means 2023, the first ultrasonic receiver 2024, the second ultrasonic receiver 2025 and the 3rd ultrasonic receiver 2026; Demodulation and time comparison means 2023 are connected with the first ultrasonic receiver 2024, the second ultrasonic receiver 2025 and the 3rd ultrasonic receiver 2026 respectively; Wherein, the first ultrasonic receiver 2024, the second ultrasonic receiver 2025 and the 3rd ultrasonic receiver 2026 be for the ultrasonic signal of the different frequency that receives respectively the first ultrasound transmitter device 1024, the second ultrasound transmitter device 1025 and the 3rd ultrasound transmitter device 1026 and send simultaneously, and send the ultrasonic signal of the different frequency receiving to demodulation and time comparison means 2023; Demodulation and time comparison means 2023 are for the ultrasonic signal of difference demodulation different frequency, and judge primary module 1 and whether meet preset range from the distance between module 2 according to the time difference that the ultrasonic signal of different frequency arrives determination unit 202, if satisfied, send to from module control unit 201 apart from the primary module information containing in reference signal first.

In the present embodiment, modulation and start control device 1023 can by OOK mode by primary module information be modulated to ultrasonic wave form first apart from reference signal; The first ultrasonic receiver 2024, the second ultrasonic receiver 2025 and the 3rd ultrasonic receiver 2026 can only distinguish corresponding receive different ultrasonic frequencies that the first ultrasound transmitter device 1024, the second ultrasound transmitter device 1025 and the 3rd ultrasound transmitter device 1026 send respectively first apart from reference signal; For example the first ultrasonic receiver 2024 can only receive the signal of the first ultrasound transmitter device 1024, the second ultrasonic receiver 2025 can only receive the signal of the second ultrasound transmitter device 1025, and the 3rd ultrasonic receiver 2026 can only receive the 3rd ultrasound transmitter device 1026.

In the present embodiment, reference cell 102 can adopt multiple modulation and start control device and three above ultrasound transmitter device, corresponding determination unit 202 also can adopt multiple demodulation and time comparison means and three above ultrasonic receivers, but optimization scheme is for a modulation adopting in the present embodiment and start control device, three sound transmitters, demodulation and time comparison means and three ultrasonic receivers.

In system of the present invention, primary module 1 is passed to primary module information from module 2 by low-frequency magnetic signal or ultrasonic signal, by the bidirectional high speed radio communication channel of the second wireless communication unit 203 and the first wireless communication unit 103, primary module information is returned to primary module 1 from module 2, the correctness of the primary module information that primary module 1 returns by identification, and then realized from the unique binding between module 2 and primary module 1.After binding, complete primary module 1 and the communication from the two-way high speed big data quantity between module 2 by the bidirectional high speed radio communication channel between the first wireless communication unit 103 and the second wireless communication unit 203.

As a kind of embodiment, the first transmission apart from reference signal is connected with Rapid Establishment radio communication and carries out exchanges data and can when difference, carry out.Such as, the first transmission apart from reference signal connects prior to Rapid Establishment radio communication and carries out exchanges data and carry out; Or primary module 1 sends first discontinuously apart from reference signal, primary module 1 and carry out fast data exchange from module 2 between described transmission first is apart from reference signal.In the quick access low coverage wireless communication system of above-mentioned control communication range, after judging that according to receive first primary module 1 and the distance between module 2 meet preset range from module 2 apart from reference signal, before being connected according to preset protocol Rapid Establishment radio communication with primary module 1 and carrying out exchanges data, primary module 1 and can disconnect the first transmission apart from reference signal therebetween from module 2, in case stop signal interferes with each other, improve efficiency of transmission and certainty of measurement, device structure is simple to operation, saves system resource.Particularly can be by following two kinds of modes:

1) send from module 2 to primary module 1 and determine signal, primary module 1 stops sending first apart from reference signal according to the definite signal receiving, and primary module 1 is connected according to preset protocol Rapid Establishment radio communication with from module 2 again and carries out exchanges data;

2) first stop receiving described first apart from reference signal from module, primary module 1 is connected according to preset protocol Rapid Establishment radio communication with from module 2 again and carries out exchanges data.

Primary module 1 in the quick access low coverage wireless communication system of above-mentioned control communication range and can being arranged at respectively different main frames from module 2.Like this, primary module information can be also host information, thereby can realize the quick access low coverage radio communication of the control communication range between main frame.

Described main frame includes but not limited to intelligent terminal and/or intelligent transportation instrument etc.Wherein, intelligent terminal comprises the products such as desktop computer, notebook computer, panel computer, palmtop PC, mobile phone, digital camera, Digital Video, electronic reader, audio and video display device and DPF; Intelligent transportation instrument comprises intelligent automobile or with other vehicles such as automobile, train, aircraft or the steamer of data interaction function are provided.

A kind of quick access low coverage wireless communications method of controlling communication range that the present invention provides simultaneously, as shown in Figure 5, Figure 6, comprising:

Steps A: primary module sends the distance reference signal that contains primary module information and communication distance information, receives, and perform step B from module to described apart from reference signal;

Step C: primary module and set up radio communication between module, carries out exchanges data.

Can realize primary module and the quick access low coverage radio communication from the control communication range between module by said method, and then make to establish and be equipped with respectively primary module and control the quick access low coverage radio communication of communication range from obtaining between two main frames of module.

If primary module with from adopting the communicate by letter mode of embodiment of magnetic signal between module, in said method, can adopt following steps, as shown in Figure 7:

Steps A 1: described primary module is modulated to primary module information the distance reference signal of low-frequency magnetic signal form, and send described low-frequency magnetic signal;

Wherein, the sub-step that steps A 1 and steps A 2 are steps A, step B1 and step B2 are the sub-step of step B.

If primary module with from adopting the communicate by letter mode of embodiment of ultrasonic signal between module, in said method, can adopt following steps, as shown in Figure 8:

Steps A 1 ': described primary module is modulated to primary module information the distance reference signal of the ultrasonic signal form of at least three kinds of different frequencies, and the ultrasonic signal of at least three kinds of different frequencies described in simultaneously sending;

Wherein, steps A 1 ' and steps A 2 ' be the sub-step of steps A, step B1 ' and step B2 ' they are the sub-step of step B.

In said method, as shown in Figure 9, step C also can be refined as:

Step C2: described primary module receives described definite link information by the first wireless communication unit, and set up primary module and from the radio communication between module by the first wireless communication unit and the second wireless communication unit.

Wherein, determine and in link information, comprise described primary module information.Like this, just can be at primary module with from determining unique annexation between module, preventing that miscellaneous equipment from pretending to be between module and primary module carries out exchanges data, and then has guaranteed that the quick access low coverage wireless communication facility of control communication range of the present invention carries out the safety of radio communication.

As a kind of embodiment, the transmission of wireless distances reference signal is connected with Rapid Establishment radio communication and carries out exchanges data and can when difference, carry out.For example, can connect and carry out exchanges data and carry out prior to primary module with from setting up radio communication at a high speed between module apart from the transmission of reference signal.Or described primary module is transmission range reference signal discontinuously, described primary module and carry out fast data exchange from module between described transmission range reference signal.When meeting predeterminable range scope from module judgement, primary module and from first closing the transmission apart from reference signal between module, then set up primary module and connect and carry out exchanges data from the radio communication of the high speed between module.Concrete, step C can be made up of following step, as shown in figure 10:

Step C3 ': set up primary module and from the radio communication between module by the first wireless communication unit and the second wireless communication unit.

Step C also can be made up of following step, as shown in figure 11, carry out when realizing difference apart from the transmission of reference signal with set up that high-speed radiocommunication is connected and carry out exchanges data:

Step C1 ' ': describedly stop receiving range reference signal from module;

Step C3 ' ': described primary module receives described definite link information by the first wireless communication unit, and set up primary module and from the radio communication between module by the first wireless communication unit and the second wireless communication unit.

In the refinement scheme of above-mentioned two kinds of step C, determine and in link information, comprise described primary module information.

The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a quick access low coverage wireless communication system of controlling communication range, is characterized in that: comprise that at least one primary module and at least one are from module; Described primary module is used for sending first apart from reference signal; Describedly described first judge apart from reference signal whether primary module and the distance from intermodule meet preset range from module according to what receive, if satisfied, described primary module is connected according to preset protocol Rapid Establishment radio communication with from module and carries out exchanges data;

Described first contains primary module information and communication distance information apart from reference signal;

Described primary module comprises: reference cell, the first wireless communication unit and control described reference cell and the primary module control unit of the first wireless communication unit work;

Describedly comprise from module: determination unit, the second wireless communication unit and control described determination unit and the second wireless communication unit work from module control unit;

Described reference cell is for sending first apart from reference signal to described determination unit;

Described determination unit judges apart from reference signal whether primary module and the distance from intermodule meet preset range according to receive from described reference cell first, if met, sends to from module control unit apart from the primary module information containing in reference signal first;

Described from module control unit receives primary module information, play primary module by the first wireless communication unit and the second wireless communication unit according to preset protocol Rapid Establishment and connect and carry out exchanges data from the radio communication between module;

High-speed radiocommunication unit access parameter between the first wireless communication unit and the second wireless communication unit comprises the SSID(service set of access channel, primary module), physical address, key or the certificate of primary module; These parameters are sent by the reference cell in primary module, are received within the scope of agreement by determination unit from module; From these parameters of module parses, and relevant parameter is set is connected with primary module; After connection, carry out authentication mutually by key or certificate and determine whether to carry out subsequent exchange of data.

2. system according to claim 1, is characterized in that:

Described reference cell comprises the first microcontroller in sequential series, the first coding circuit, the first drive circuit and the first emission of magnetic field coil; Described the first microcontroller is used for controlling the first coding circuit and the first drive circuit; Described the first coding circuit is used for the wireless data frame of primary module information to carry out by bits of encoded, and sends the first drive circuit to; Described the first drive circuit is for driving the first emission of magnetic field coil; Described the first emission of magnetic field coil is for generation of first sending apart from reference signal and with magnetic signal form of containing primary module information;

Described determination unit comprises the first magnetic conduction circuitry in sequential series, the first amplifying circuit, the first thresholding judgement and demodulator circuit and the second microcontroller; Described the first magnetic conduction circuitry for respond to receive magnetic signal form first apart from reference signal and convert thereof into electrical signal form and send the first amplifying circuit to; Described the first amplifying circuit judges and demodulator circuit for amplifying and send the first thresholding to apart from reference signal first; Described the first thresholding judgement and demodulator circuit are used for judging whether first reach predetermined threshold value apart from reference signal, if reached predetermined threshold value, send the second microcontroller by first to apart from the primary module information in reference signal; Described the second microcontroller is used for controlling the first magnetic conduction circuitry, the first amplifying circuit and the judgement of the first thresholding and demodulator circuit, and the primary module information receiving is sent to described from module control unit.

3. system according to claim 2, is characterized in that:

Described reference cell also comprises the first modulation circuit being arranged between the first coding circuit and the first drive circuit; Described the first modulation circuit, for the primary module information after the first coding circuit coding is modulated, and sends the first drive circuit to.

4. according to the system described in claim 2 or 3, it is characterized in that:

Described determination unit also comprises the second coding circuit, the second drive circuit and the second emission of magnetic field coil; Described the second microcontroller, the second coding circuit, the second drive circuit and the second emission of magnetic field coil are in sequential series; Described the second microcontroller is used for controlling the second coding circuit and the second drive circuit; Described the second coding circuit is used for the wireless data frame from module information to carry out by bits of encoded, and sends the second drive circuit to; Described the second drive circuit is for driving the second emission of magnetic field coil; Described the second emission of magnetic field coil is for generation of containing from the second distance reference signal of module information and sending with magnetic signal form;

5. system according to claim 4, is characterized in that:

Described determination unit also comprises the second modulation circuit being arranged between the second coding circuit and the second drive circuit; Described the second modulation circuit is used for modulating from module information after the second coding circuit coding, and sends the second drive circuit to.

6. according to the system described in claims 1 to 3 any one, it is characterized in that: described first is low-frequency magnetic signal apart from reference signal.

7. system according to claim 6, is characterized in that: the frequency of described low-frequency magnetic signal is 500Hz, 1KHz, 1.5KHz, 2KHz, 2.5KHz, 3KHz, 4KHz, 5KHz, 10KHz, 20KHz, 30KHz or 10MHz.

8. system according to claim 4, is characterized in that: described second distance reference signal is low-frequency magnetic signal.

9. system according to claim 8, is characterized in that: the frequency of described low-frequency magnetic signal is 500Hz, 1KHz, 1.5KHz, 2KHz, 2.5KHz, 3KHz, 4KHz, 5KHz, 10KHz, 20KHz, 30KHz or 10MHz.

10. system according to claim 1, is characterized in that:

Described reference cell comprises at least three ultrasound transmitter device and at least one modulation and startup control device, and described modulation and startup control device are connected with ultrasound transmitter device respectively; Described modulation and startup control device are for primary module information is modulated into first apart from reference signal, and at least three ultrasound transmitter device described in simultaneously starting; Described at least three ultrasound transmitter device for send respectively different frequency ultrasonic wave form first apart from reference signal;

Described determination unit comprises at least three ultrasonic receivers and at least one demodulation and time comparison means, and described ultrasonic receiver is connected with demodulation and time comparison means respectively;

The different ultrasonic frequencies that described at least three ultrasonic receivers send at least three ultrasound transmitter device described in receiving respectively simultaneously first apart from reference signal, and send demodulation and time comparison means by described first to apart from reference signal;

Described demodulation and time comparison means for different ultrasonic frequencies of demodulation respectively first apart from reference signal, and judge whether primary module and the distance from intermodule meet preset range according to first of different ultrasonic frequencies the time difference that arrives described determination unit apart from reference signal, if met, send to from module control unit apart from the primary module information containing in reference signal first.

11. systems according to claim 10, is characterized in that: described reference cell comprises three ultrasound transmitter device and a modulation and starts control device; Described determination unit comprises three ultrasonic receivers and demodulation and time comparison means.

12. systems according to claim 1, is characterized in that: described first is ultrasonic signal apart from reference signal.

13. according to the system described in claim 1 to 2,10 or 11 any one, it is characterized in that: described the first wireless communication unit and the second wireless communication unit are Wi-Fi module, bluetooth module or UWB module.

14. according to the system described in claims 1 to 3,10 or 11 any one, it is characterized in that: between described the first wireless communication unit and the second wireless communication unit, wireless communication frequency band is 433MHz, 900MHz, 2.4GHz, 5.8GHz or 60GHz.

15. according to the system described in claims 1 to 3,10 or 11 any one, it is characterized in that: describedly first judge that apart from reference signal primary module and the distance from intermodule meet preset range from module according to what receive, first send and determine signal to primary module from module, primary module stops sending described first apart from reference signal according to definite signal of receiving, and primary module is connected according to preset protocol Rapid Establishment radio communication with from module again and carries out exchanges data.

16. according to the system described in claims 1 to 3,10 or 11 any one, it is characterized in that: describedly first judge that apart from reference signal primary module and the distance from intermodule meet preset range from module according to what receive, first stop receiving described first apart from reference signal from module, primary module is connected according to preset protocol Rapid Establishment radio communication with from module again and carries out exchanges data.

17. according to the system described in claims 1 to 3,10 or 11 any one, it is characterized in that: described primary module and being arranged at respectively different main frames from module.

18. systems according to claim 17, is characterized in that: described main frame is intelligent terminal and/or intelligent transportation instrument.

19. systems according to claim 18, is characterized in that: described intelligent terminal is desktop computer, notebook computer, panel computer, palmtop PC, mobile phone, digital camera, Digital Video, electronic reader, audio and video display device or DPF; Described intelligent transportation instrument is for intelligent automobile or with automobile, train, aircraft or steamer that data interaction function is provided.

20. according to the system described in claims 1 to 3,10 or 11 any one, it is characterized in that: described primary module sends first to carry out when being connected according to preset protocol Rapid Establishment radio communication with from module and carrying out exchanges data difference apart from reference signal and described primary module.

21. systems according to claim 20, is characterized in that: described primary module sends first and is connected according to preset protocol Rapid Establishment radio communication with from module prior to described primary module apart from reference signal and carries out exchanges data and carry out.

22. systems according to claim 20, is characterized in that: described primary module sends first discontinuously apart from reference signal, described primary module and carry out fast data exchange from module between described transmission first is apart from reference signal.

Control the quick access low coverage wireless communications method of communication range for 23. 1 kinds, it is characterized in that, comprise the steps:

Described step C comprises:

Or described step C comprises:

Step C1 ' ': describedly stop receiving range reference signal from module;

24. methods according to claim 23, is characterized in that:

Described steps A comprises:

Described step B comprises:

Step B2: from module, the signal of telecommunication is carried out to threshold value judgement, perform step C if the signal of telecommunication is more than or equal to default threshold value, otherwise execution step A1.

25. methods according to claim 23, is characterized in that:

Described steps A comprises:

Described step B comprises:

26. methods according to claim 25, is characterized in that: in described definite link information, comprise described primary module information.

27. methods according to claim 25, is characterized in that: in described definite link information, comprise described primary module information.

28. methods according to claim 26, is characterized in that: in described definite link information, comprise described primary module information.

29. according to the method described in claim 23 to 25 any one, it is characterized in that: described primary module transmission range reference signal and described primary module carry out when being connected according to preset protocol Rapid Establishment radio communication with from module and carrying out exchanges data difference.

30. methods according to claim 29, is characterized in that: described primary module transmission range reference signal is connected according to preset protocol Rapid Establishment radio communication with from module prior to described primary module and carries out exchanges data and carry out.

31. methods according to claim 29, is characterized in that: described primary module is transmission range reference signal discontinuously, described primary module and carry out fast data exchange from module between described transmission range reference signal.