CN109922463A - A kind of point-to-point wireless lan communication system and method - Google Patents
A kind of point-to-point wireless lan communication system and method Download PDFInfo
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Abstract
The present invention provides a kind of point-to-point wireless lan communication system and method, the system comprises master device, concentrator and terminal devices, at least one described concentrator and the master device are wirelessly connected, the concentrator has unique ID, it is wirelessly connected with terminal device described at least one, the concentrator is associated with the ID of the concentrator with the communication channel frequencies of the terminal device.Point-to-point wireless lan communication system of the invention and method use master device, concentrator, terminal device 3-tier architecture, and communication structure is simple；Using the communication channel that frequency is different between the concentrator and the terminal device, it can be very good to prevent co-channel interference, simultaneously as communication channel is the several channels of the quantity of center frequency front and back offset seldom, communication channel configurations are simple, can meet requirement with money wireless communication module.
Description
Technical field
The present invention relates to wireless communication fields, and in particular to a kind of point-to-point wireless lan communication system and method.
Background technique
Point-to-point WLAN has the advantages that low in cost, communication is simple, but point to point wireless communication is not due to having
There are complicated algorithm and routing, there are problems that co-channel interference, especially in the case where sending data with multiple equipment, does
Disturbing the moment may occur, and cause communication failure.
Application No. is 201310198765.6 Chinese invention patents to disclose a kind of wireless network multichannel combined communication
Method, including S1, main website are to concentrator networking: main website is communicated with concentrator foundation, and main website is concentrator allocation of communication channels, and
Adjacent concentrator uses different communication channels；S2, concentrator are to collector networking: concentrator is using basic channel to acquisition
Device broadcast transmission networking instruction, after networking success, main website is collector allocation of communication channels, is established between concentrator and collector
Communication, and adjacent collector uses different communication channels；S3, collector are to terminal device networking: collector uses basis
Channel sends networking instruction to terminal device, and after networking success, terminal device receives the communication channel from collector, acquisition
It establishes and communicates between device and terminal device；The operating frequency range of the basis signal and communication channel be 470MHz~
Between 510MHz；The frequency interval of two adjacent groups basic channel is 5MHz, and the frequency interval of two adjacent groups communication channel is
200kHz.The wireless network multichannel combination communication method of the invention is less prone to that co-channel interference, the transmitting-receiving ability of data be strong, energy
Avoid one layer of equipment to the false wake-up of next layer of equipment, but the communication system of the disclosure of the invention has main website, concentrator, adopts
Storage, terminal device four-layer structure, structure is complicated；It is adopted respectively between concentrator and collector, between collector and terminal device
With the channel of different frequency, when equipment in network is large number of, number of communication channels is huge, and channel configuration is complicated, wirelessly
Communication module cannot be general.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of point-to-point wireless lan communication system and methods.
A kind of point-to-point wireless lan communication system, including master device, concentrator and terminal device, at least one institute
Concentrator and the master device is stated to be wirelessly connected, the concentrator has unique ID, with terminal device described at least one without
Line connection, the concentrator are associated with the ID of the concentrator with the communication frequency of the terminal device.
Preferably, according to concentrator ID, multiple frequency F for deviating before and after centre frequency are distributedmid-N,…,
Fmid-1,Fmid,Fmid+1,…,Fmid+NAs the communication channel frequencies of the concentrator and the terminal device, wherein the Fmid
For center frequency, the N is positive integer.
Any of the above-described scheme is preferably, and near same place, concentrator communication frequency is different, is effectively avoided dry with frequency
Disturb problem.
Any of the above-described scheme is preferably, and the communication system configuration Terminal Alert information receives concentrator, works in announcement
Alert channel, frequency is fixed and and Fmid-N,…,Fmid-1,Fmid,Fmid+1,…,Fmid+NIt is different.
Any of the above-described scheme is preferably, and the concentrator receives the data that the master device issues and is handed down to described
Terminal device receives the data that the terminal device uploads and is uploaded to the master device.
Any of the above-described scheme is preferably, and the terminal device and the concentrator are established before communication connection, the end
The ID of end equipment is associated with the ID of the concentrator.
Any of the above-described scheme is preferably, and the terminal device and the concentrator are established before communication connection, communication
Frequency is defaulted as the centre frequency Fmid。
Any of the above-described scheme is preferably, and the terminal device and the concentrator are established when communicating to connect, and is used first
The centre frequency FmidRequest is sent to the concentrator and establishes communication connection data, and the data include the terminal device
ID.
Any of the above-described scheme is preferably, if the terminal device can not be with centre frequency FmidIt is established with the concentrator
Communication connection, the terminal device is successively with frequency Fmid-N,…,Fmid-1,Fmid+1,…,Fmid+NNumber is sent to the concentrator
According to the data include the ID of the terminal device.
Any of the above-described scheme is preferably, and concentrator identical with the terminal equipment in communication frequency receives the data
Afterwards, check whether the ID of the terminal device is associated with the ID of the concentrator, if so, the concentrator is set to the terminal
Standby echo back data, is established with respective communication frequency and is communicated to connect, and local area network is added in the terminal device, if it is not, the concentrator
It does not respond.
Any of the above-described scheme is preferably, and the terminal device and the concentrator are established after communication connection, saves phase
Communication frequency is answered, and keeps communication frequency constant, until local area network communication frequency shift needs networking again.
Any of the above-described scheme is preferably, when the terminal device has active alarm to report task, using on alarm channel
Report, avoids co-channel interference.
Any of the above-described scheme is preferably, and the terminal device receives the data that the concentrator issues, to the concentration
Device uploads data.
Any of the above-described scheme is preferably, and the terminal device can be realized the communication system active networking.
Any of the above-described scheme is preferably, the master device be the concentrator and the terminal device be arranged ID and its
His running parameter.
Any of the above-described scheme is preferably, and the master device is realized the replacement of communication frequency in the communication system and set
Standby adjustment replacement.
Any of the above-described scheme is preferably, and the master device receives the concentrator to the concentrator transmitting order to lower levels
The data of upload.
Any of the above-described scheme is preferably, and the master device receives the Terminal Alert information and receives what concentrator was sent
Warning information.
Any of the above-described scheme is preferably, and the master device triggers the networking communication system.
Any of the above-described scheme is preferably, and the concentrator detects channel, when detecting channel busy, actively
Delay the machine wireless telecommunications task.
Any of the above-described scheme is preferably, the wireless communications task that the concentrator actively initiates the machine, described in anticipation
The response time of terminal device no longer initiates wireless communications task in the response time.
Any of the above-described scheme is preferably, and the wireless communications task that the concentrator initiates the master device delays
It deposits, when the channel is idle, sends to the terminal device, when channel busy, the master device is initiated wireless immediately
Communication task is sent after current task channel occupancy terminates to the terminal device as sub-priority task.
Any of the above-described scheme is preferably, the concentrator include micro-control unit (Microcontroller Unit,
It MCU), further include LORA (one of Long Range, LPWAN communication technology) unit, the LORA is connect with the MCU,
For the concentrator and the terminal equipment in communication.
Any of the above-described scheme is preferably, and the concentrator further includes GPRS unit, WIFI unit, ethernet controller list
At least one of member, 4G communication unit, 5G communication unit, connect with the MCU, for communicating with the master device and even
It connects.
Any of the above-described scheme is preferably, and the concentrator further includes clock unit, is connect with the MCU, for marking
Time.
Any of the above-described scheme is preferably, and the concentrator further includes storage unit, is connect with the MCU, for saving
The work in every parameter and terminal operating data of the concentrator.
Any of the above-described scheme is preferably, and the concentrator work in every parameter includes that communication frequency, Termination ID, main website are set
Standby at least one of parameter, terminal device parameter.
Any of the above-described scheme is preferably, and the concentrator further includes key and LED unit, is connect, is used for the MCU
Human-computer interaction.
Any of the above-described scheme is preferably, and the concentrator further includes power supply unit, is provided reliably for the concentrator
Electric energy supply.
Any of the above-described scheme is preferably, and the terminal device includes MCU, further includes LORA unit, the LORA unit
It is connect with the MCU, for being wirelessly communicated with the concentrator.
Any of the above-described scheme is preferably, and the terminal device further includes storage unit, is connect with the MCU, for depositing
The parameter of the terminal device is stored up, the parameter includes terminal device ID.
Any of the above-described scheme is preferably, and the terminal device further includes power supply unit, and providing for the terminal device can
The energy supply leaned on.
Any of the above-described scheme is preferably, and the terminal device further includes relay, the MCU connection is used for, for controlling
Make the terminal device working condition.
Any of the above-described scheme is preferably, and the terminal device further includes display screen and key, is connect with the MCU, is used
In human-computer interaction, instruction terminal equipment state and terminal device is simply controlled.
Any of the above-described scheme is preferably, and the master device includes main service unit, further includes Web service unit, preceding
Set machine service unit, database service unit, the main service unit and the Web service unit, front end processor service list
First, the described database service unit connection.
Any of the above-described scheme is preferably, and the master device further includes short message service unit, with the database service
Unit connection.
Any of the above-described scheme is preferably, and the master device further includes hardware cryptographic services unit, with the main service
Unit connection.
Another aspect of the present invention provides a kind of point-to-point Wireless LAN communication method, is suitable for the communication system,
Comprising steps of
Configure concentrator ID；
Terminal device is associated with concentrator；
Concentrator and terminal device networking；
Communication system is communicated.
Preferably, the concentrator ID is configured by the master device；
Any of the above-described scheme is preferably, and by the way that the terminal device ID is arranged, and by the terminal device ID and is concentrated
The mode of device ID binding, the concentrator are associated with the terminal device.
Any of the above-described scheme is preferably, the concentrator and the terminal device networking comprising steps of
According to the concentrator ID, multiple frequency F for deviating before and after centre frequency are distributedmid-N,…,Fmid-1,Fmid,
Fmid+1,…,Fmid+NAs the communication channel frequencies of the concentrator and the terminal device, wherein the FmidCentered on frequency
Rate, the N are positive integer；
Terminal device is with centre frequency FmidData are sent to the concentrator, communication connection is established in request；
Communication channel frequencies are center frequency FmidConcentrator receive the data after, judge that the ID of terminal device is
No to bind with the ID of this concentrator, if so, concentrator echo back data, establishes communication connection, local area network is added in terminal device,
If it is not, concentrator does not respond；
Terminal device is successively with frequency Fmid-N,…,Fmid-1,Fmid+1,…,Fmid+NData are sent to concentrator, request is established
Communication connection；
After the identical concentrator of communication frequency receives the data of request foundation communication connection, the ID of the terminal device is checked
It is whether associated with the ID of the concentrator, if so, concentrator is built to the terminal device echo back data with respective communication frequency
Vertical communication connection, local area network is added in terminal device, if it is not, concentrator does not respond；
The terminal device and the concentrator are established after communication connection, are saved corresponding communication frequency and are kept not
Become.
Any of the above-described scheme is preferably, the concentrator and the terminal device networking comprising steps of
According to the concentrator ID, multiple frequency F for deviating before and after centre frequency are distributedmid-N,…,Fmid-1,Fmid,
Fmid+1,…,Fmid+NAs the communication channel frequencies of the concentrator and the terminal device, wherein the FmidCentered on frequency
Rate, the N are positive integer；
Terminal device is successively with frequency Fmid-N,…,Fmid-1,Fmid,Fmid+1,…,Fmid+NData, request are sent to concentrator
Establish communication connection；
After the identical concentrator of communication frequency receives the data of request foundation communication connection, the ID of the terminal device is checked
It is whether associated with the ID of the concentrator, if so, concentrator is built to the terminal device echo back data with respective communication frequency
Vertical communication connection, local area network is added in terminal device, if it is not, concentrator does not respond；
The terminal device and the concentrator are established after communication connection, are saved corresponding communication frequency and are kept not
Become.
Any of the above-described scheme is preferably, and the premises equipment requests and the concentrator are established when communicating to connect, hair
The data sent include the ID of the terminal device.
Any of the above-described scheme is preferably, and the concentrator and the terminal device networking are by the master device or institute
State terminal device initiation.
Any of the above-described scheme is preferably, and when the communication system is communicated, the concentrator detects channel,
When detecting channel busy, the machine wireless telecommunications task is actively delayed
Any of the above-described scheme is preferably, and when the communication system is communicated, the concentrator actively initiates the machine
Wireless communications task, prejudge the response time of the terminal device, in the response time, no longer initiation channel radio trust
Business.
Any of the above-described scheme is preferably, and when the communication system is communicated, the concentrator is to the master device
The wireless communications task of initiation is cached, and when the channel is idle, is sent immediately to the terminal device, when channel busy,
The wireless communications task that the master device is initiated is as sub-priority task, to institute after current task channel occupancy terminates
State terminal device transmission.
Any of the above-described scheme is preferably, when the communication system is communicated, if the terminal device has active alarm
Task is reported, the Terminal Alert information is reported to using the alarm channel and receives concentrator, avoids co-channel interference.
Any of the above-described scheme is preferably, and the alarm channel, frequency is fixed and and Fmid-N,…,Fmid-1,Fmid,
Fmid+1,…,Fmid+NIt is different.
Point-to-point wireless lan communication system of the invention and method use master device, concentrator, 3 layers of terminal device
Structure, communication structure are simple；It, can be fine using the communication channel that frequency is different between the concentrator and the terminal device
Prevent co-channel interference, simultaneously as communication channel is the few several channels of the quantity that deviates before and after the frequency of center, communication letter
Road configuration is simple, can meet requirement with money wireless communication module.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of a preferred embodiment of point-to-point wireless lan communication system according to the invention.
Fig. 2 is the concentrator knot of the embodiment as shown in Figure 1 of point-to-point wireless lan communication system according to the invention
Structure schematic diagram.
Fig. 3 is the terminal device of the embodiment as shown in Figure 1 of point-to-point wireless lan communication system according to the invention
Structural schematic diagram.
Fig. 4 is the master device of the embodiment as shown in Figure 1 of point-to-point wireless lan communication system according to the invention
Structural schematic diagram.
Fig. 5 is the flow diagram of a preferred embodiment of point-to-point Wireless LAN communication method according to the invention.
Fig. 6 is the flow diagram of another embodiment of point-to-point Wireless LAN communication method according to the invention.
Specific embodiment
For a better understanding of the present invention, the present invention will be described in detail below with reference to specific embodiments.
Embodiment 1
As shown in Figure 1, a kind of point-to-point wireless lan communication system, including master device, concentrator and terminal device,
The master device has at least one, and each master device is connect at least one concentrator by Ethernet, each concentration
Device and at least one terminal device are wirelessly connected.It is that the concentrator configures ID by the master device.The concentrator with
The communication channel frequencies of the terminal device are related to the ID of the concentrator.
According to the ID of concentrator, distribute for multiple frequency F cheap before and after centre frequencymid-N,…,Fmid-1,Fmid,
Fmid+1,…,Fmid+NAs the communication channel frequencies of the concentrator and the terminal device, wherein the FmidCentered on frequency
Rate, the N are positive integer.Such as the centre frequency FmidFor 915MHz, 5 frequencies for deviating before and after centre frequency are distributed
Communication channel frequencies as the concentrator and the terminal device.To avoid influencing communication performance, deviation frequency should not be from
Centre frequency is excessive, can choose using 5MHz as communication channel frequencies interval, in this way, the concentrator and the terminal device
Communication channel frequencies are 905MHz, 910MHz, 915MHz, 920MHz and 925MHz.According to last position of the concentrator ID
Number is the communication channel for the concentrator distribution 905MHz that tail number is 1 and 6, is the concentrator distribution 910MHz that tail number is 2 and 7
Communication channel, be the communication channel of concentrator that tail number is 3 and 8 distribution 915MHz, be that the concentrator that tail number is 4 and 9 distributes
The communication channel of 920MHz is the communication channel for the concentrator distribution 925MHz that tail number is 5 and 0.Near same place, installation
The different concentrator of communication frequency, it is possible to prevente effectively from the problem of co-channel interference, such as above-mentioned traffic channel assignment scheme,
The continuous concentrator of ID is installed in same place, and the quantity of concentrator is no more than 5, that is, can effectively avoid asking for co-channel interference
Topic.Communication system is also configured with Terminal Alert information and receives concentrator, works in alarm channel, channel frequency fix and with
Fmid-N,…,Fmid-1,Fmid,Fmid+1,…,Fmid+NDifference, such as above-mentioned traffic channel assignment scheme, setting alarm channel frequency
Rate is maximum channel frequency+channel spacing frequency, i.e. 930MHz.
The terminal device and the concentrator are established before communication connection, and communication frequency is defaulted as the centre frequency
Fmid.The terminal device is associated with the concentrator, it is set by configuring the ID of the terminal device, and by the terminal
Standby ID is realized with the concentrator ID mode bound to be associated with.When the terminal device and the concentrator establish communication connection,
The centre frequency F is used firstmidRequest is sent to concentrator and establishes communication connection data, and the data include the terminal
The ID of equipment.Communication channel frequencies are FmidConcentrator receive the data that the terminal device is sent after, check that the terminal is set
Whether standby ID associated with this concentrator, if being associated, the concentrator to the terminal device echo back data,
With centre frequency FmidCommunication connection is established, local area network is added in the terminal device；If the ID of the terminal device not with this concentration
Device is associated, and the concentrator does not respond.If the terminal device can not be with centre frequency FmidCommunication link is established with concentrator
It connects, the terminal device is successively with frequency Fmid-N,…,Fmid-1,Fmid+1,…,Fmid+NData are sent to the concentrator, it is described
Data include the ID of the terminal device, after the concentrator of respective communication frequency receives the data that the terminal device is sent,
Judge whether the terminal device ID is associated with the concentrator, if so, the concentrator is returned to the terminal device
Data are sent, communication connection is established；The concentrator responds if not.Final all terminal devices associated with concentrator are equal
It is established and is communicated to connect with corresponding communication frequency with concentrator, the terminal device and the concentrator establish communication connection
Afterwards, respective communication frequency is saved, and keeps communication frequency constant, until local area network communication frequency shift needs networking again.Institute
When stating terminal device has active alarm to report task, is reported using alarm channel, avoid co-channel interference.The terminal device can
Realize the communication system active networking.
The master device is the concentrator and the terminal equipment configuration ID and other running parameters, is triggered described logical
Believe system group network, realizes the replacement of communication frequency and the adjustment of equipment replacement in the communication system.
As shown in Fig. 2, the concentrator includes MCU20, further include LORA unit 21, ethernet controller unit 22, when
Clock unit 23, storage unit 24, key and LED unit 25 and power supply unit 26, the LORA unit 21, ethernet controller list
Member 22, clock unit 23, storage unit 24, key and LED unit 25, power supply unit 26 are connect with the MCU20.It is described
LORA unit 21 is used for the concentration for the concentrator and the terminal equipment in communication, the ethernet controller unit 22
Device is communicated and is connect with the master device, and the clock unit 23 is for marking the time, and the storage unit 24 is for saving
The work in every parameter and terminal operating data of the concentrator, the concentrator work in every parameter include communication frequency, end
At least one of ID, master device parameter, terminal device parameter are held, the key and LED unit 25 are used for human-computer interaction, institute
It states power supply unit 26 and provides reliable electric energy supply for the concentrator.The concentrator can also include WIFI unit, GPRS
At least one of unit, 4G communication unit, 5G communication unit, the WIFI unit, GPRS unit, 4G communication unit, 5G are logical
Letter unit can substitute the Ethernet control unit 22, be communicated with the master device for the concentrator, can also be with
The Ethernet control unit 22 is completed the concentrator together and is communicated with the master device.
As shown in figure 3, the terminal device include MCU30, further include LORA unit 31, storage unit 32, display screen 33,
Key 34, relay 35 and power supply unit 36, the LORA unit 31, storage unit 32, display screen 33, key 34, relay
35, power supply unit 36 is connect with the MCU30.The LORA unit 31 is wireless for the terminal device and the concentrator
Communication, the storage unit 32 are used to store the parameter of the terminal device, and the parameter includes terminal device ID, the power supply
Unit 36 provides reliable electric energy supply for the terminal device, and the relay 35 is for controlling the terminal device work shape
State, the display screen 33 and key 34 are used for human-computer interaction, instruction terminal equipment state and are simply controlled terminal device.
As shown in figure 4, the master device includes main service unit 40, Web service unit 41, front end processor service unit
42, database service unit 43, the main service unit 40 and the Web service unit 41, the front end processor service unit 42,
The database service unit 43 connects.The master device further includes hardware cryptographic services unit 44 and short message service unit
45, the hardware cryptographic services unit 44, the short message service unit 45 are connect with the database service unit.
Embodiment 2
As shown in figure 5, a kind of point-to-point Wireless LAN communication method, is suitable for the communication system, comprising steps of
S1: configuration concentrator ID；
S2: terminal device is associated with concentrator；
S3: concentrator and terminal device networking；
S4: communication system is communicated.
In step S1, the ID of the concentrator is configured by the master device.
In step S2, the terminal device ID is configured by the master device, and by the terminal device ID with it is a certain
The ID of a concentrator is bound, and the terminal device is associated with the concentrator as a result,.
Step S3: concentrator and terminal device networking, networking are initiated by the master device or the terminal device
Journey further comprises step:
S31: according to the concentrator ID, multiple frequency F for deviating before and after centre frequency are distributedmid-N,…,Fmid-1,
Fmid,Fmid+1,…,Fmid+NAs the communication channel frequencies of the concentrator and the terminal device, wherein the FmidCentered on
Frequency, the N are positive integer；
S32: terminal device is with centre frequency FmidData are sent to the concentrator, communication connection, the number are established in request
According to including the terminal device ID；
S33: communication channel frequencies are center frequency FmidConcentrator receive the data after, judge terminal device
Whether ID has bound with the ID of this concentrator, if so, concentrator echo back data, establishes communication connection, terminal device addition office
Domain net, if it is not, concentrator does not respond；
S34: terminal device is successively with frequency Fmid-N,…,Fmid-1,Fmid+1,…,Fmid+NData, request are sent to concentrator
Communication connection is established, the data include the terminal device ID；
S35: after the identical concentrator of communication frequency receives the data of request foundation communication connection, the terminal device is checked
ID it is whether associated with the ID of the concentrator, if so, concentrator is to the terminal device echo back data, with respective communication frequency
Rate establishes communication connection, and local area network is added in terminal device, if it is not, concentrator does not respond；
S36: the terminal device and the concentrator are established after communication connection, and corresponding communication frequency and holding are saved
It is constant.
In step S4, communication system is communicated, and the concentrator receives the data that the master device issues and issues
To the terminal device, receives the data that the terminal device uploads and be uploaded to the master device.The terminal device connects
The data that the concentrator issues are received, Xiang Suoshu concentrator uploads data.The master device to the concentrator transmitting order to lower levels,
Receive the data that the concentrator uploads；The master device receives the Terminal Alert information and receives the alarm that concentrator is sent
Information.
When the communication system is communicated, the concentrator detects channel, when detecting channel busy,
Actively delay the machine wireless telecommunications task；The wireless communications task that the concentrator actively initiates the machine, prejudges the terminal
The response time of equipment no longer initiates wireless communications task in the response time；The concentrator is to the master device
The wireless communications task of initiation is cached, and when the channel is idle, is sent immediately to the terminal device, when channel busy,
The wireless communications task that the master device is initiated is as sub-priority task, to institute after current task channel occupancy terminates
State terminal device transmission.The terminal device has active alarm to report task, reports to the terminal using the alarm channel
Warning information receives concentrator, avoids co-channel interference, the alarm channel, frequency is fixed and and Fmid-N,…,Fmid-1,Fmid,
Fmid+1,…,Fmid+NIt is different.
Embodiment 3
As shown in fig. 6, a kind of point-to-point Wireless LAN communication method, is suitable for the communication system, comprising steps of
S1: configuration concentrator ID；
S2: terminal device is associated with concentrator；
S3: concentrator and terminal device networking；
S4: communication system is communicated.
Wherein, the step S3: concentrator and terminal device networking, further comprise step:
S31: according to the concentrator ID, multiple frequency F for deviating before and after centre frequency are distributedmid-N,…,Fmid-1,
Fmid,Fmid+1,…,Fmid+NAs the communication channel frequencies of the concentrator and the terminal device, wherein the FmidCentered on
Frequency, the N are positive integer
S32: terminal device is successively with frequency Fmid-N,…,Fmid-1,Fmid,Fmid+1,…,Fmid+NData are sent to concentrator,
Communication connection is established in request；
S33: after the identical concentrator of communication frequency receives the data of request foundation communication connection, the terminal device is checked
ID it is whether associated with the ID of the concentrator, if so, concentrator is to the terminal device echo back data, with respective communication frequency
Rate establishes communication connection, and local area network is added in terminal device, if it is not, concentrator does not respond；
S34: the terminal device and the concentrator are established after communication connection, and corresponding communication frequency and holding are saved
It is constant.
Embodiment 4
The communication system and communication means can be applied to power grid payment system, at this point, the terminal device is
Intelligent electric meter, hardware composition includes SOC metering chip, is connect with the MCU, is used for electric-power metering；The relay 35 is real
Existing load control system and the control of pre-payment switching.
The WEB service unit of the master device is used for human-computer interaction, and function includes addition concentrator, addition ammeter, group
Net supplements with money, copy reading ammeter, at least one of issues special command, realizes due function to meet concentrator and ammeter.Institute
The main service unit for stating master device handles various data, and is responsible for response or transmitting data after data processing, such as real-time place
Manage Web service request, Timing Processing Web service unfinished requests, actively with hardware cryptographic services unit communications to realize hardware
Simultaneously database is written etc. in encryption function, acquisition and data needed for calculating.The front end processor service unit of the master device be used for
Concentrator and ammeter communication, realize copy reading ammeter data, issue setting command, timing heartbeat, special operation instruction etc., support life
Time-out is enabled to retransmit or give up function.The short message service unit of the master device provides Additional Services, for partially needing short message
The user of prompting realizes sensitive operation is reminded, warning message is reminded, notification message is reminded, system message is mass-sended etc..
After intelligent electric meter and concentrator are installed, the ID of the ID of concentrator and intelligent electric meter are added to master device
In, and bind the subordinate relation of the intelligent electric meter Yu the concentrator, i.e., the intelligent electric meter and the concentrator are thought
Association, while other application parameter is set.By the networking of master device triggering concentrator and intelligent electric meter, or by pressing intelligence
Button on energy ammeter realizes networking.After the completion of networking, entire communication system comes into operation, and concentrator timing is copied for a period of time
It reads the operation data of an intelligent electric meter and transmits to master device, if during which master device has rush job, such as copy reading
Intelligent electric meter instantaneous operating parameter whether concentrator is according to current channel busy, selects a good opportunity and is issued to intelligent electric meter, and prejudge intelligence
Ammeter response time, in the response time, the concentrator silence waits intelligent electric meter response, and can only ammeter receiving
Reply data after be forwarded to master device, complete primary assault operation.When intelligent electric meter has alarm event, as electric leakage alarming,
The excessively high warning light of line temperature, intelligent electric meter automatically switch to alarm channel, upload alarm parameter, and Terminal Alert information receives collection
After middle device receives information, alarm parameter is transmitted to master device.
It should be noted that the above examples are only used to illustrate the technical scheme of the present invention, rather than its limitations；Although preceding
Stating embodiment, invention is explained in detail, it should be appreciated by those skilled in the art: it can be to previous embodiment
The technical solution of record is modified, or equivalent substitution of some or all of the technical features, and these are replaced,
The range for technical solution of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of point-to-point wireless lan communication system, including master device, concentrator and terminal device, described at least one
Concentrator and the master device are wirelessly connected, it is characterised in that: the concentrator has unique ID, with end described at least one
End equipment is wirelessly connected, and the concentrator is associated with the ID of the concentrator with the communication channel frequencies of the terminal device.
2. point-to-point wireless lan communication system as described in claim 1, it is characterised in that: according to concentrator ID, distribution
For the multiple frequency F deviated before and after centre frequencymid-N,…,Fmid-1,Fmid,Fmid+1,…,Fmid+NAs the concentrator with
The communication channel frequencies of the terminal device, wherein the FmidFor center frequency, the N is positive integer.
3. point-to-point wireless lan communication system as claimed in claim 2, it is characterised in that: near same place, institute
It is different to state concentrator communication frequency, effectively avoids problem of co-channel interference.
4. point-to-point wireless lan communication system as claimed in claim 2, it is characterised in that: configurating terminal warning information connects
Concentrator is received, works in alarm channel, frequency is fixed and and Fmid-N,…,Fmid-1,Fmid,Fmid+1,…,Fmid+NIt is different.
5. point-to-point wireless lan communication system as described in claim 1, it is characterised in that: the terminal device with it is described
Concentrator is established before communication connection, and the ID of the terminal device is associated with the ID of the concentrator.
6. point-to-point wireless lan communication system as described in claim 1, it is characterised in that: the terminal device with it is described
Concentrator is established before communication connection, and communication frequency is defaulted as the centre frequency Fmid。
7. such as point-to-point wireless lan communication system described in claim 5 or 6, it is characterised in that: the terminal device with
When the concentrator establishes communication connection, the centre frequency F is used firstmidRequest, which is sent, to the concentrator establishes communication
Data are connected, the data include the ID of the terminal device.
8. point-to-point wireless lan communication system as claimed in claim 7, it is characterised in that: if the terminal device can not
With centre frequency FmidIt establishes and communicates to connect with the concentrator, the terminal device is successively with frequency Fmid-N,…,Fmid-1,
Fmid+1,…,Fmid+NData are sent to the concentrator, the data include the ID of the terminal device.
9. point-to-point wireless lan communication system as claimed in claim 8, it is characterised in that: with the terminal equipment in communication
After the identical concentrator of frequency receives the data, check whether the ID of the terminal device is related to the ID of the concentrator
Connection, if so, the concentrator is established with respective communication frequency and is communicated to connect to the terminal device echo back data, the terminal
Local area network is added in equipment, if it is not, the concentrator does not respond.
10. a kind of point-to-point Wireless LAN communication method is suitable for such as described in any item communication systems of claim 1-9,
It is characterized by comprising steps:
Configure concentrator ID；
Terminal device is associated with concentrator；
Concentrator and terminal device networking；
Communication system is communicated.
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