CN103052174B - A kind of wireless self-assembly system - Google Patents

A kind of wireless self-assembly system Download PDF

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Publication number
CN103052174B
CN103052174B CN201210582625.4A CN201210582625A CN103052174B CN 103052174 B CN103052174 B CN 103052174B CN 201210582625 A CN201210582625 A CN 201210582625A CN 103052174 B CN103052174 B CN 103052174B
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China
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data
unit
signal
repeater
terminal
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CN201210582625.4A
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CN103052174A (en
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袁贤刚
潘世军
王博
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成都泰格微波技术股份有限公司
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Abstract

The invention discloses a kind of wireless self-assembly system, it is made up of at least two communication terminals, connected by wireless network between each adjacent communication terminal, communication terminal comprises any one or multiple combination of hand-held voice terminal, Hand-Hold Data Terminal and car-mounted terminal, communication terminal has main frame and router two kinds of roles concurrently, the message of to one's name not dividing into groups, to the information host received, is carried out forwarding of packets by communication terminal.The present invention has very strong survivability, and the cost built, expand, safeguard and use is low, and in addition, have adaptive capacity to environment strong, network coverage widened by accessible repeater, can obtain abundant data service with outbound communication; Its transfer of data have speed high, be with wide, time delay is little and network coverage is wide etc. feature.

Description

A kind of wireless self-assembly system

Technical field

The present invention relates to a kind of wireless self-assembly system.

Background technology

Along with the develop rapidly of science and technology, the continuous propelling of information age, means of communication is also to diversified development.But still there are some drawbacks in the means of communication that in fact, current people generally adopt.Here is deficiency and the shortcoming of several means of communication and their existence generally used at present:

(1) cellular mobile communication networks

1. infrastructure is relied on: need between mobile terminal could realize communication by fixed base stations, base station is connected with key switching network by Wireline, adds communications cost;

2. mobile terminal does not possess routing function, and mobile terminal can only carry out data transmit-receive by fixed base stations, uses constraint larger;

3. star topology, certain link failure, service on a large scale will be interrupted, and Survivabilities of Networks is poor;

4. build, expand, maintenance cost is high;

5. when mobile terminal is static, message transmission rate can reach 2Mbit/s, but during mobile terminal high-speed mobile, message transmission rate only has 144kbit/s.

(2) trunked communication system

1. similar with cellular mobile communication networks, belong to the network having connection, rely on infrastructure;

2. be generally dedicated network, based on speech business.

(3) WLAN (wireless local area network) WLAN

1. mobile node is equipped with wireless network card, is connected, depends on the network infrastructure of similar base station or access point by AP access point with fixed network;

2. concerning network layer, be single-hop networks, can not forwarding data;

3. can realize high-speed communication (802.11b:11M or 802.11a:54M) in limited covering scope (hundreds of rice), but coverage is comparatively limited.

(4) VSAT satellite communication system

1. coverage is the widest, but cost is high, transmission bandwidth is limited, transmission delay is large.

(5) communication in moving

1. rely on satellite, the rainy day or cloud layer thick and heavy in, or just easily to lose efficacy in the place that particular surroundings and existence are blocked, occurred communication failure;

2. antenna is too heavy, uses and carries all very inconvenient, must be placed on the mobile device such as automobile, steamer;

What 3. there is one period of long period seeks star process, and cannot drop into application fast, the use of a lot of occasion is all restricted.

In sum, current existing communication network be mostly based on the reliable and stable communications infrastructure on, once these communications infrastructures are destroyed, conventional means of communication is all no longer feasible.And be exactly often in such, keep communication reliably to seem particularly important.Trunked communication system is except relying on infrastructure, and the network bandwidth also has considerable restraint, uses narrow-band technologies more, about bandwidth 30K, about message transmission rate 16Kbps, this just makes its data transmission capabilities greatly limited.Therefore, under some special occasions, existing means of communication can't meet the demand of communication, and maximum problem is exactly that survival ability is too poor, is easily destroyed fast.

Summary of the invention

The object of the invention is to solve the deficiencies in the prior art, provide a kind of and do not rely on Base communication facility, survivability is good, communications cost the is low wireless self-assembly system based on Mesh network.

The object of the invention is to be achieved through the following technical solutions: a kind of wireless self-assembly system, it is made up of at least two communication terminals, connected by wireless network between each adjacent communication terminal, communication terminal comprises any one or multiple combination of hand-held voice terminal, Hand-Hold Data Terminal and car-mounted terminal;

Hand-held voice terminal comprises microcontroller, Signal reception transtation mission circuit, call typing unit, Routing Protocol control unit and GPS positioning unit, call typing unit comprises voice acquisition module and analog to digital converter, Signal reception transtation mission circuit, Routing Protocol control unit and GPS positioning unit are connected with microcontroller respectively, the output of voice acquisition module is connected with the input of analog to digital converter, and the output of analog to digital converter is connected with microcontroller; Hand-held voice terminal is based on speech business, there is certain its communication ability, itself can transmit data by information mode, and the message transmission rate of single-hop can reach 400KBPS, as required the positional information obtained by GPS positioning unit can be beamed back command centre or same group membership simultaneously.

Hand-Hold Data Terminal comprises microcontroller, Signal reception transtation mission circuit, call typing unit, Routing Protocol control unit, GPS positioning unit, network card chip and USB interface, call typing unit comprises voice acquisition module and analog to digital converter, voice acquisition module is connected with microcontroller by analog to digital converter, and Signal reception transtation mission circuit, Routing Protocol control unit, GPS positioning unit, network card chip are connected with microcontroller respectively with USB interface; Hand-Hold Data Terminal is on the basis realizing speech business, have stronger data service fulfillment capability, without the need to by PC, data terminal itself there are speech pattern and data pattern two kinds of mode of operations, a key switching can be carried out between voice-and-data pattern, use very convenient.Be defaulted as data pattern under normality, when receiving voice conversation, automatic spring window, selects whether be switched to speech pattern and answers; When caller initiated by needs, only need press handoff functionality key and can be switched to speech pattern from data pattern and dial.

Car-mounted terminal comprises microcontroller, Signal reception transtation mission circuit, Routing Protocol control unit, GPS positioning unit, network card chip, hand miaow, touch-screen and supply module, Signal reception transtation mission circuit, Routing Protocol control unit, GPS positioning unit, network card chip, hand miaow are connected with microcontroller respectively with touch-screen, the input of supply module is connected with cigar lighter, and the output of supply module is connected with the power end of microcontroller.Car-mounted terminal can realize all functions of Hand-Hold Data Terminal, and adopts touch-screen and hand miaow, operates and uses more convenient.

The present invention includes the gateway connecting wireless self-assembly system and outer net, described gateway comprises wireless self-assembly fidonetFido controller, central processing unit and outer net protocol controller, and wireless self-assembly network interface is connected with outer network interface with outer net protocol controller by wireless self-assembly fidonetFido controller, central processing unit successively.

The present invention includes the repeater be located between communication terminal, the output of communication terminal transmitter is connected by the input of repeater with communication terminal receiver, described repeater comprises processor, signal receiving unit, signal data copied cells, signal screening unit, signal adjustment unit, signal transmitting unit, lightening surge preventing unit, voltage regulation unit and temperature control unit, signal receiving unit, signal data copied cells, signal screening unit, signal adjustment unit, signal amplification unit, signal transmitting unit, lightening surge preventing unit, voltage regulation unit is connected with processor respectively with temperature control unit, signal adjustment unit comprises filter circuit, signal attenuation compensating circuit, signal error correction circuit and signal amplification circuit.

The present invention includes the repeater be located between communication terminal, the output of communication terminal transmitter is connected by the input of cordless communication network with the first repeater, the output of the first repeater is connected with the input of end repeater by each intermediate repeater successively, and the output of end repeater is connected by the input of cordless communication network with communication terminal receiver.

Car-mounted terminal supply module of the present invention comprises cigar lighter, power supply switch circuit, charging chip and reserve battery, the output of cigar lighter is connected with the input of power supply switch circuit, one tunnel of power supply switch circuit exports and is directly connected with circuit load, another road exports and is connected with the input of charging chip, the output of charging chip is connected with the input of reserve battery, and the output of reserve battery is connected with circuit load.

The invention has the beneficial effects as follows:

1) non-stop layer: in MANET, the status of all nodes is all equality, it is a peer to peer network, node can add at any time and leave network, when arbitrary relay nodes disconnects, communication terminal or the repeater of Automatic-searching minimum distance make up, the fault of any node all can not affect the normal operation of whole network, has very strong survivability.

2) self-organizing: the laying of network or expansion are without the need to relying on any default Base communication facility, just can form an independently network expansion communication work after node start quickly and automatically, communication efficiency is high and the cost built, expand, safeguard and use is low.

3) multihop routing: when node will communicate with the node outside its coverage, the multi-hop that can pass through intermediate node (communication terminal or repeater) forwards and can realize.

4) dynamic topology: wireless self-assembly system allows the topological structure of dynamic change oneself, topology of networks constantly can change along with the change of handheld terminal to adapt to needs of conversing.

5) smart terminal: communication terminal is portable handsets or vehicle-mounted machine, carries with easy to use; In order to conserve energy, each communication terminal can select best working method automatically, and it only keeps in touch to reduce communication energy consumption with nearest node.

6) communication quality: it is strong that MANET has adaptive capacity to environment, and can with outbound communication, obtain abundant data service; Its transfer of data have speed high, be with wide, time delay is little and network coverage is wide etc. feature.

Accompanying drawing explanation

Fig. 1 is wireless self-assembly system configuration schematic block diagram of the present invention;

Fig. 2 is gateway of the present invention composition structural schematic block diagram;

Fig. 3 is repeater of the present invention composition structural schematic block diagram;

Fig. 4 is the present invention's hand-held voice terminal composition structural schematic block diagram;

Fig. 5 is Hand-Hold Data Terminal of the present invention composition structural schematic block diagram;

Fig. 6 is car-mounted terminal of the present invention composition structural schematic block diagram;

Fig. 7 is car-mounted terminal supply module of the present invention composition structural schematic block diagram.

Embodiment

Technical scheme of the present invention is further described below in conjunction with accompanying drawing:

As shown in Figure 1, a kind of wireless self-assembly system, it is made up of at least two communication terminals, is connected between each adjacent communication terminal by wireless network, and communication terminal comprises any one or multiple combination of hand-held voice terminal, Hand-Hold Data Terminal and car-mounted terminal.

When needs and existing mobile communications network are connected, just need to settle gateway device, gateway plays bridge beam action between two different communication systems, enables them set up unobstructed service channel.

As shown in Figure 2, wireless self-assembly system is connected with outer net by gateway, described gateway comprises wireless self-assembly fidonetFido controller, central processing unit and outer net protocol controller, and wireless self-assembly network interface is connected with outer network interface with outer net protocol controller by wireless self-assembly fidonetFido controller, central processing unit successively.

Gateway operationally, first the decoding data received by the external network interface of outer net protocol controller, and transfer to central processing unit after the serial data from outer net interface is converted to parallel output, in decode procedure, the outer net protocol controller data that also externally network interface transmits carry out CRC, to guarantee the accuracy of data.After central processing unit receives the outer network data that outer net protocol controller transmits, be converted into the data meeting wireless self-networking agreement, be sent to wireless self-assembly fidonetFido controller, by wireless self-assembly fidonetFido controller, data are encoded, and the data after coding are sent to wireless self-assembly network interface; In decode procedure, wireless self-assembly fidonetFido controller also carries out CRC to the data that central processing unit transmits, to guarantee the accuracy of data.

In order to improve the reliability of gateway, be convenient to technical staff simultaneously and carry out keeping in repair and debugging, protocol controller can adopt field programmable gate array to realize.In the course of the work, whenever gateway powers on, central processing unit just carries out initialization operation: messaging parameter technical staff prestored sends to protocol controller, and messaging parameter mainly comprises port address, device address, refresh time and communication frequency etc.; The equipment of technical staff also by being connected with central processing unit resets messaging parameter.

When terminal is many, dispersion wide, when needing the region of communication larger, just need to install repeater additional in communication system, repeater is a powerful force transfer device, can expand the communication distance of MANET significantly.

As shown in Figure 3, wireless self-assembly system also comprises the repeater be located between communication terminal, and the output of communication terminal transmitter is connected by the input of repeater with communication terminal receiver, described repeater comprises processor, signal receiving unit, signal data copied cells, signal screening unit, signal adjustment unit, signal transmitting unit, lightening surge preventing unit, voltage regulation unit and temperature control unit, signal receiving unit, signal data copied cells, signal screening unit, signal adjustment unit, signal amplification unit, signal transmitting unit, lightening surge preventing unit, voltage regulation unit is connected with processor respectively with temperature control unit, signal adjustment unit comprises filter circuit, signal attenuation compensating circuit, signal error correction circuit and signal amplification circuit.

Wherein, processor is the core of repeater, completes the processing capacity that data are main; Signal receiving unit is used for Received signal strength data, and is forwarded to processor after carrying out AD conversion to it; Signal data copied cells completes copying received data, and the data after copying are stored in memory; Repeater is screened by the signal data of signal screening unit to band numbering as required, optionally forwards the data that terminal needs; Because repeater often needs Prolonged exposure in outdoor application, often be struck by lightning at thunderstorm weather and caused the situations such as the overvoltage short circuit of repeater internal circuit, repeater is easy to impaired, lightening surge preventing unit can the use safety of available protecting repeater under thunderstorm weather, voltage regulation unit and temperature control unit protect the internal circuit of repeater from the over-and under-voltage protection of internal circuit and temperature controlled angle, extend the useful life of repeater; Filter circuit in signal adjustment unit, signal attenuation compensating circuit, signal error correction circuit and signal amplification circuit complete the function such as error correcting and signal gain amplifier in signal noise filtering, attenuation compensation, transmission respectively, ensure that the quality of signal by repeater transmission, improve communication quality.

When carrying out transition forwarding by multiple repeater between communication terminal, wireless self-assembly system comprises the repeater be located between communication terminal, the output of communication terminal transmitter is connected by the input of cordless communication network with the first repeater, the output of the first repeater is connected with the input of end repeater by each intermediate repeater successively, and the output of end repeater is connected by the input of cordless communication network with communication terminal receiver.

In actual networking application, not all equipment all can be used, and according to network size size and practical application request, the selection of equipment and network configuration have very large flexibility.

As shown in Figure 4, described hand-held voice terminal comprises microcontroller, Signal reception transtation mission circuit, call typing unit, Routing Protocol control unit and GPS positioning unit, call typing unit comprises voice acquisition module and analog to digital converter, Signal reception transtation mission circuit, Routing Protocol control unit and GPS positioning unit are connected with microcontroller respectively, the output of voice acquisition module is connected with the input of analog to digital converter, and the output of analog to digital converter is connected with microcontroller.Hand-held voice terminal, based on speech business, has certain its communication ability.Hand-held voice terminal itself can transmit data by information mode, and the GPS positioning position information of oneself, at 400Kbps, also as requested, can be beamed back command centre or the member with group by the message transmission rate of single-hop simultaneously.

As shown in Figure 5, described Hand-Hold Data Terminal comprises microcontroller, Signal reception transtation mission circuit, call typing unit, Routing Protocol control unit, GPS positioning unit, network card chip and USB interface, call typing unit comprises voice acquisition module and analog to digital converter, voice acquisition module is connected with microcontroller by analog to digital converter, and Signal reception transtation mission circuit, Routing Protocol control unit, GPS positioning unit, network card chip are connected with microcontroller respectively with USB interface.Hand-Hold Data Terminal is on the basis realizing speech business, more powerful to the practical function of data service, and without the need to by PC, terminal itself is operated in two kinds of patterns, can carry out a key switching between speech pattern and data pattern.Normality is defaulted as data pattern, and if any voice calling, meeting automatic spring window, selects whether be switched to speech pattern and answers.If initiate caller, also only by a function key, need can be switched to speech pattern from data pattern and dial.Handheld terminal has special energy conservation software, can saves energy to greatest extent, increases the useful life of battery.

As shown in Figure 6, described car-mounted terminal comprises microcontroller, Signal reception transtation mission circuit, Routing Protocol control unit, GPS positioning unit, network card chip, hand miaow, touch-screen and supply module, Signal reception transtation mission circuit, Routing Protocol control unit, GPS positioning unit, network card chip, hand miaow are connected with microcontroller respectively with touch-screen, the input of supply module is connected with cigar lighter, and the output of supply module is connected with the power end of microcontroller.

As shown in Figure 7, car-mounted terminal supply module comprises cigar lighter, power supply switch circuit, charging chip and reserve battery, the output of cigar lighter is connected with the input of power supply switch circuit, one tunnel of power supply switch circuit exports and is directly connected with circuit load, another road exports and is connected with the input of charging chip, the output of charging chip is connected with the input of reserve battery, and the output of reserve battery is connected with circuit load.When a vehicle is started, terminal Auto Power On; When vehicle stops working, whether terminal notifying " whether externally fed interrupts, be in internal battery powers state at present, shut down ", selected to shut down by operating personnel, and as a period of time is unattended, system can automatic shutdown.In addition, there is dissimilar ferry bus according to level ground, station, current airport, therefore car-mounted terminal is configured with 24V and turns the power supply adaptor that 5V and 12V turns 5V two type.

The provisional autonomous system of the multi-hop that this MANET is made up of one group of mobile node with wireless transmitter.At any one time, be connected to form any fully connected topology between node by wireless channel, node can movement arbitrarily, and topological structure can be caused also to change thereupon.MANET can run under independently environment, also can be connected on existing network infrastructure by gateway.In MANET, communication terminal has main frame and router two kinds of roles concurrently: on the one hand, and communication terminal runs relevant application program as main frame; On the other hand, communication terminal needs to run relevant Routing Protocol as router, and then the routing operations that route discovery, route maintenance etc. are common.To the information host received, the message of to one's name not dividing into groups is carried out forwarding of packets.Because MANET is the mobile radio network of a multi-hop, want the main frame of exchange message may not so just can not directly communicate in communication zone for two, but they can, by other main frame in communication zone, adopt the mode of refile (multi-hop technology) also can complete communication task smoothly.

Claims (1)

1. a wireless self-assembly system, it is characterized in that: it is made up of at least two communication terminals, connected by wireless network between each adjacent communication terminal, communication terminal comprises any one or multiple combination of hand-held voice terminal, Hand-Hold Data Terminal and car-mounted terminal;
Described hand-held voice terminal comprises microcontroller, Signal reception transtation mission circuit, call typing unit, Routing Protocol control unit and GPS positioning unit, call typing unit comprises voice acquisition module and analog to digital converter, Signal reception transtation mission circuit, Routing Protocol control unit and GPS positioning unit are connected with microcontroller respectively, the output of voice acquisition module is connected with the input of analog to digital converter, and the output of analog to digital converter is connected with microcontroller; Hand-held voice terminal is based on speech business, there is its communication ability, itself can transmit data by information mode, and the message transmission rate of single-hop reaches 400KBPS, as required the positional information obtained by GPS positioning unit can be beamed back command centre or same group membership simultaneously;
Described Hand-Hold Data Terminal comprises microcontroller, Signal reception transtation mission circuit, call typing unit, Routing Protocol control unit, GPS positioning unit, network card chip and USB interface, call typing unit comprises voice acquisition module and analog to digital converter, voice acquisition module is connected with microcontroller by analog to digital converter, and Signal reception transtation mission circuit, Routing Protocol control unit, GPS positioning unit, network card chip are connected with microcontroller respectively with USB interface, Hand-Hold Data Terminal is on the basis realizing speech business, have stronger data service fulfillment capability, without the need to by PC, Hand-Hold Data Terminal itself there are speech pattern and data pattern two kinds of mode of operations, a key switching can be carried out between voice-and-data pattern, use very convenient, be defaulted as data pattern under normality, when receiving voice conversation, automatic spring window, selects whether be switched to speech pattern and answers, when caller initiated by needs, only need press handoff functionality key and can be switched to speech pattern from data pattern and dial, described car-mounted terminal comprises microcontroller, Signal reception transtation mission circuit, Routing Protocol control unit, GPS positioning unit, network card chip, hand miaow, touch-screen and supply module, Signal reception transtation mission circuit, Routing Protocol control unit, GPS positioning unit, network card chip, hand miaow is connected with microcontroller respectively with touch-screen, the input of supply module is connected with cigar lighter, the output of supply module is connected with the power end of microcontroller, car-mounted terminal can realize all functions of Hand-Hold Data Terminal, and adopt touch-screen and hand miaow, operate and use more convenient,
It comprises the gateway connecting wireless self-assembly system and outer net, described gateway comprises wireless self-assembly fidonetFido controller, central processing unit and outer net protocol controller, and wireless self-assembly network interface is connected with outer network interface with outer net protocol controller by wireless self-assembly fidonetFido controller, central processing unit successively; Gateway operationally, first the decoding data received by the external network interface of outer net protocol controller, and transfer to central processing unit after the serial data from outer net interface is converted to parallel output, in decode procedure, the outer net protocol controller data that also externally network interface transmits carry out CRC, to guarantee the accuracy of data; After central processing unit receives the outer network data that outer net protocol controller transmits, be converted into the data meeting wireless self-networking agreement, be sent to wireless self-assembly fidonetFido controller, by wireless self-assembly fidonetFido controller, data are encoded, and the data after coding are sent to wireless self-assembly network interface; In decode procedure, wireless self-assembly fidonetFido controller also carries out CRC to the data that central processing unit transmits, to guarantee the accuracy of data;
Wireless self-assembly fidonetFido controller and outer net protocol controller adopt field programmable gate array to realize, and improve the reliability of gateway, are convenient to technical staff simultaneously and carry out keeping in repair and debugging;
In the course of the work, whenever gateway powers on, central processing unit just carries out initialization operation: messaging parameter technical staff prestored sends to protocol controller, and messaging parameter comprises port address, device address, refresh time and communication frequency; Technical staff also can be reset messaging parameter by the equipment be connected with central processing unit;
When terminal is many, dispersion wide, when needing the region of communication larger, just need to install repeater additional in communication system, repeater is a powerful force transfer device, can expand the communication distance of MANET significantly;
It comprises the repeater be located between communication terminal, and the output of communication terminal transmitter is connected by the input of repeater with communication terminal receiver, described repeater comprises processor, signal receiving unit, signal data copied cells, signal screening unit, signal adjustment unit, signal transmitting unit, lightening surge preventing unit, voltage regulation unit and temperature control unit, signal receiving unit, signal data copied cells, signal screening unit, signal adjustment unit, signal amplification unit, signal transmitting unit, lightening surge preventing unit, voltage regulation unit is connected with processor respectively with temperature control unit, signal adjustment unit comprises filter circuit, signal attenuation compensating circuit, signal error correction circuit and signal amplification circuit,
Wherein, processor is the core of repeater, completes the processing capacity that data are main; Signal receiving unit is used for Received signal strength data, and is forwarded to processor after carrying out AD conversion to it; Signal data copied cells completes copying received data, and the data after copying are stored in memory; Repeater is screened by the signal data of signal screening unit to band numbering as required, optionally forwards the data that terminal needs; Because repeater often needs Prolonged exposure in outdoor application, often be struck by lightning at thunderstorm weather and caused the overvoltage short circuit of repeater internal circuit, repeater is easy to impaired, and lightening surge preventing unit can the use safety of available protecting repeater under thunderstorm weather; The over-and under-voltage protection from internal circuit of voltage regulation unit and temperature control unit and the internal circuit of temperature controlled angle protection repeater, extend the useful life of repeater; Error correcting in the settling signal clutter filtering respectively of filter circuit in signal adjustment unit, signal attenuation compensating circuit, signal error correction circuit and signal amplification circuit, attenuation compensation, transmission and signal gain amplifier function, guarantee the quality of signal by repeater transmission, improve communication quality;
When carrying out transition forwarding by multiple repeater between communication terminal, wireless self-assembly system comprises the repeater be located between communication terminal, the output of communication terminal transmitter is connected by the input of cordless communication network with the first repeater, the output of the first repeater is connected with the input of end repeater by each intermediate repeater successively, and the output of end repeater is connected by the input of cordless communication network with communication terminal receiver;
Described car-mounted terminal supply module comprises cigar lighter, power supply switch circuit, charging chip and reserve battery, the output of cigar lighter is connected with the input of power supply switch circuit, one tunnel of power supply switch circuit exports and is directly connected with circuit load, another road exports and is connected with the input of charging chip, the output of charging chip is connected with the input of reserve battery, and the output of reserve battery is connected with circuit load; When a vehicle is started, terminal Auto Power On; When vehicle stops working, whether terminal notifying " whether externally fed interrupts, be in internal battery powers state at present, shut down ", selected to shut down by operating personnel, and as a period of time is unattended, system can automatic shutdown.
CN201210582625.4A 2012-12-28 2012-12-28 A kind of wireless self-assembly system CN103052174B (en)

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CN103052051B (en) * 2012-12-28 2016-04-13 成都泰格微电子研究所有限责任公司 A kind of communication means of wireless self-assembly system

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