CN106735954A - A kind of complex foci space-time synchronous drilling control system based on internet - Google Patents

Abstract

The invention discloses a kind of complex foci space-time synchronous drilling control system based on internet,Including base,Single-chip microcomputer and external equipment,Protective cover is installed with the base,The intracavity bottom of the protective cover is from left to right disposed with power supply,Controller box,Cleaning laser and work box,The input of the single-chip microcomputer is electrically connected with the output end of power supply and camera respectively,The output end of the single-chip microcomputer respectively with scanning motion drill laser,Scanning motion drilling laser modulator,First electric expansion bar,Second electric expansion bar,Cleaning laser,3rd electric expansion bar is electrically connected with the input for being automatically positioned module,The single-chip microcomputer is electrically connected with radio frequency transceiving module,The external equipment is connected by internet with radio frequency transceiving module,The beneficial effect of the invention is operated using internet,Intelligence degree is high,High degree of automation.

Description

A kind of complex foci space-time synchronous drilling control system based on internet

Technical field

Bored the invention belongs to laser drilling processes field, more particularly to a kind of complex foci space-time synchronous based on internet Hole control system.

Background technology

Current laser drill, is all only limited to artificial operation, and intelligence degree is low, causes the error rate of workpiece to rise higher It is high so that the percent defective of product remains high, while operating process is excessively complicated so that labour intensity is excessive, with certain Limitation.

The content of the invention

The present invention is provided one kind to solve technical problem present in known technology and is operated using internet, intelligence Change degree is high, high degree of automation, a kind of complex foci space-time based on internet with practicality and generalization very high Synchronous drilling control system.

The present invention is achieved in that a kind of complex foci space-time synchronous drilling control system based on internet, including Base, single-chip microcomputer and external equipment, are installed with protective cover on the base, fixed peace in the inner left wall of the protective cover Equipped with scanning motion drilling laser, scanning motion drilling Laser Modulation is provided with the right side of the scanning motion drilling laser Device, laser bundling device is provided with the right side of the scanning motion drilling laser modulator, and the left and right sides of laser bundling device is equal The top of protective cover is arranged on by the first electric expansion bar, speculum, and reflection are provided with the right side of the laser bundling device The left and right sides of mirror is arranged on the top of protective cover by the second electric expansion bar, is provided with immediately below the speculum quiet State focalizer, the intracavity bottom of the protective cover be from left to right disposed with power supply, controller box, cleaning laser and Work box, the intracavity bottom of the work box is installed with operating desk, on four inwalls all around of the work box The 3rd electric expansion bar is installed with, camera is provided with by the 3rd fixture on the right side inwall of the protective cover, institute The input for stating single-chip microcomputer is electrically connected with the output end of power supply and camera respectively, the output end difference of the single-chip microcomputer With scanning motion drilling laser, scanning motion drilling laser modulator, the first electric expansion bar, the second electric expansion bar, clear The input washed laser, the 3rd electric expansion bar and be automatically positioned module is electrically connected with, and the single-chip microcomputer is received with less radio-frequency Hair module is electrically connected with, and the external equipment is connected by internet with radio frequency transceiving module；

Four corners of the base bottom are mounted on being provided with brake block on universal wheel, and universal wheel；

The scanning motion drilling laser modulator is arranged on the top of protective cover by the first fixture；

The static focus device is fixedly mounted on the right side inwall of protective cover by the second fixture；

The cleaning laser is arranged on the underface of laser bundling device；

The work box is arranged on the underface of speculum；

Workpiece is provided with the operating desk；

The other end of the 3rd electric expansion bar is connected with workpiece；

Inner cavity top of the camera towards work box；

Chamber door corresponding with work box is movably installed with by hinge on the front end face of the protective cover.

Further, to be provided with middle multiple gateway terminal fast roaming method new including one for the radio frequency transceiving module Corresponding table and three packets kidnap mechanism；

Corresponding table, the i.e. corresponding table of terminal mac addresses and dns server address；Mac addresses are the mac addresses of STA, DNS Server address is the IP address of MPP nodes selected by the dns server address of STA, i.e. STA；

Three packets kidnap mechanism to be included：The abduction forwarding mechanism of general data bag, the abduction and response of ARP request bag The abduction forwarding mechanism of mechanism and DNS query response bag；

The abduction forwarding mechanism of general data bag, after Mesh nodes receive the general data bag of STA, intercepts and captures the packet, Source data packet mac addresses are extracted, judges whether it is the STA for accessing this Mesh nodes according to source mac addresses, only to accessing this Mesh The packet of the STA of node carries out abduction treatment, then judges that packet is destined for outer net or Intranet, only to being sent to outer net Packet carries out abduction treatment；Packet be access this Mesh nodes STA's and be sent to outer net, then by packet rs destination mac It is revised as in Mesh network a mac address for the optimal MPP nodes of communication condition in address；

The abduction of ARP request bag and acknowledgement mechanism, L2P agreements are distributed ARP table mechanism, and the core of the mechanism is storage The all arp response contents propagated in network give an IP address in some specific node groups, and client initiates one ARP request, after Mesh nodes receive ARP request bag, intercepts and captures and is directly forwarded to be stored with response bar destination node group Node, request sent as unicast packet, for cannot still be obtained using DAT mechanism response entry ARP request, agreement To be gone out by common ARP request packet broadcast；

When STA default gateway MPP1 cannot normal work when, due to the packet that STA is sent to outer net be using acquiescence net Mac addresses are closed as packet rs destination mac addresses, ARP request can be initiated and gone to obtain the mac addresses of default gateway, accessed in STA Mesh nodes at intercept and capture STA to the ARP request bag of default gateway, whether have response entry, have, then if searching in local DAT tables Directly generating an arp reply bag carries out response；Otherwise rung using the mac addresses of an optimal MPP node of communication condition Should, after STA receives arp reply, the packet that will just be sent to outer net sends；

The abduction forwarding mechanism of DNS query response bag, STA can first send a DNS query bag to dns server, search The corresponding IP address of the domain name, obtains that after response the network address could be accessed, and the dns server address and IP address of STA are certainly Dynamic to obtain, the dns server address of usual STA is the IP address of default gateway, and the default gateway of STA cannot normal work Make, the dns server failure of STA, it is impossible to provide domain name resolution service to STA, it is impossible to surfed the Net by way of accessing domain name, The Mesh nodes accessed in STA are kidnapped and by the purpose IP address in DNS query bag by STA's the DNS query bag of STA Default gateway ip address is revised as a public network dns server address, and it is optimal that DNS query then is forwarded a packet into communication condition MPP nodes, are sent by the MPP nodes, for DNS response bags, by source IP address in packet by public network server address Change back the IP address of the default gateway of STA.

Further, the single-chip microcomputer is provided with active echo interference suppression module, and the active echo interference suppresses The active echo interference suppression of module specifically includes as follows：

Step one：First it is echo self-interference letter to near-end sending signal in near-end node and the transmitting terminal of distant-end node NumberThe useful echo signal sent with distal endDifference dot product space vector：

With

Obtain actual near-end sending signal and distal end sending signal t^NE=β (θ_n)t^NE(n) and t^FE=α (θ_f)t^FE(n), Wherein θ_nAnd θ_fThe respectively transmission angle of near end signal and remote signaling；

Step 2：The reception signal of near-end communication node is：

t^R(n)=α (θ_f)H^FE(n)t^FE(n)+β(θ_n)H^NE(n)t^NE(n)+W(n)；

Wherein,It is that the actual transmission signal from far-end correspondent node is received Signal；AndIt is the actual its own transmission signal of near-end node； Proximally and distally jth (j=N is represented respectively₁,…,N_T) sending signal vector on strip antenna；

With

Then it is respectively the channel transfer functions of proximally and distally transmission signal；W (n) is channel additive white Gaussian noise；Its In, N_TRepresent communication node transmitting antenna number, N_RIt is reception antenna number, N_fIt is the every frame length of signal, ()^TRepresent to square The transposition oeprator of battle array or vector；

Step 3：By the best weight value vector of beamformerDot product reception signal t^R N () is obtained through the reception signal after beam formingIt is expressed as：

Build beamformer optimum right vector ω reality, due to sending signal angle, it is known that therefore using following formula as The approximate expression of optimum right vector：

ω=t^R(n)(t^NE(n))^H(t^NE(n)(t^NE(n))^H)^-1；

Further according toObtain through the reception signal after beam forming

Wherein ()^HRepresent to matrix or the conjugate transposition oeprator of vector；

Step 4：In receiving terminal by using self adaptation recurrence least square RLS algorithm to being mixed with self-interference, interchannel noise Reception signalSelf-interference suppression is carried out, the primary iteration number of times l=1 of RLS adaptive algorithms is made, and set most Big iterations K and starting step size μ is set according to the autocorrelation matrix of near end input signal^NE, sef-adapting filter it is initial Change weighted vector α^NE(0) and wave filter length M, start iterative process, set K=25, M=11,μ^NE=1；

Step 5：According to formulaAccording to Below equation obtains the estimation signal of near-end single antenna

Wherein j=1 ..., N_T, N_TTransmission antenna total number is represented, M is the length of sef-adapting filter, α^NEN () represents It is weighted vector,It is the reception signal suppressed by self-interference on j-th strip near-end reception antenna, It is the near end signal obtained on j-th strip near-end reception antennaEstimate；

J ＜ N_T, then j=j+1 is made, estimate the estimation signal on next reception antenna

J=N_T, then next step is advanced to；

Step 6：The weighted vector at n moment is updated according to below equationAnd Near-end sending signal t is exported according to iteration result^NEThe estimation signal of (n)

Step 7：From reception signalIn filter self-interference signal, obtain the estimation of remote signaling, afterwards will The signal sends into follow-up MIMO decoding detection units.

The complex foci space-time synchronous drilling control system based on internet that the present invention is provided, is passed through using external equipment Internet is controlled so that the automation of equipment and intelligence degree are high so that the drilling of workpiece is more accurate, while logical Crossing external equipment can in real time understand machine process, and process equipment is arranged in protective cover, prevent laser to the glasses of human body and Skin comes to harm so that process is safer, is provided with universal wheel and brake block so that equipment movement is convenient.

Brief description of the drawings

Fig. 1 is that the complex foci space-time synchronous drilling control system structure based on internet provided in an embodiment of the present invention is shown It is intended to；

Fig. 2 is the front view of Fig. 1 provided in an embodiment of the present invention；

Fig. 3 is work box structural representation provided in an embodiment of the present invention；

Fig. 4 is the complex foci space-time synchronous drilling control system structural frames based on internet provided in an embodiment of the present invention Figure.

In figure：1st, base；2nd, universal wheel；3rd, brake block；4th, protective cover；5th, scanning motion drilling laser；6th, scanning fortune Dynamic drilling laser modulator；7th, the first fixture；8th, laser bundling device；9th, the first electric expansion bar；10th, speculum；11st, second Electric expansion bar；12nd, static focus device；13rd, the second fixture；14th, power supply；15th, controller box；16th, laser is cleaned； 17th, work box；18th, operating desk；19th, workpiece；20th, the 3rd electric expansion bar；21st, the 3rd fixture；22nd, camera；23rd, close Page；24th, chamber door；25th, single-chip microcomputer；26th, it is automatically positioned module；27th, radio frequency transceiving module；28th, external equipment；29th, interconnect Net.

Specific embodiment

In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.

Structure of the invention is explained in detail with reference to Fig. 1-Fig. 4：During a kind of complex foci based on internet Empty synchronization drilling control system, including base 1, single-chip microcomputer 25 and external equipment 28, protective cover is installed with the base 1 4, scanning motion drilling laser 5, the scanning motion drilling laser are installed with the inner left wall of the protective cover 4 5 right side is provided with scanning motion drilling laser modulator 6, and the right side of the scanning motion drilling laser modulator 6 is provided with Laser bundling device 8, and the left and right sides of laser bundling device 8 passes through the top that the first electric expansion bar 9 is arranged on protective cover 4, The right side of the laser bundling device 8 is provided with speculum 10, and the left and right sides of speculum 10 passes through the second electric expansion bar 11 tops for being arranged on protective cover 4, the underface of the speculum 10 is provided with static focus device 12, the protective cover 4 it is interior Bottom of chamber portion is from left to right disposed with power supply 14, controller box 15, cleaning laser 16 and work box 17, the work The intracavity bottom of case 17 is installed with operating desk 18, is installed with four inwalls all around of the work box 17 3rd electric expansion bar 20, camera 22, the list are provided with the right side inwall of the protective cover 4 by the 3rd fixture 21 The input of piece machine 25 is electrically connected with the output end of power supply 14 and camera 22 respectively, the output end of the single-chip microcomputer 25 Respectively with scanning motion drilling laser 5, scanning motion drilling laser modulator 6, the first electric expansion bar 9, second is electronic stretches Contracting bar 11, the input for cleaning laser 16, the 3rd electric expansion bar 20 and being automatically positioned module 26 are electrically connected with, the monolithic Machine 25 is electrically connected with radio frequency transceiving module 27, and the external equipment 28 passes through internet 29 and radio frequency transceiving module 27 connections.

Further, four corners of the bottom of the base 1 are mounted on being provided with brake block on universal wheel 2, and universal wheel 2 3。

Further, the scanning motion drilling laser modulator 6 is arranged on the top of protective cover 4 by the first fixture 7.

Further, the static focus device 12 is fixedly mounted on the right side inwall of protective cover 4 by the second fixture 13.

Further, the cleaning laser 16 is arranged on the underface of laser bundling device 8.

Further, the work box 17 is arranged on the underface of speculum 10.

Further, it is provided with workpiece 19 on the operating desk 18.

Further, the other end of the 3rd electric expansion bar 20 is connected with workpiece 19.

Further, inner cavity top of the camera 22 towards work box 17.

Further, it is movably installed with and the corresponding chamber door of work box 17 by hinge 23 on the front end face of the protective cover 4 24。

Further, to be provided with middle multiple gateway terminal fast roaming method new including one for the radio frequency transceiving module Corresponding table and three packets kidnap mechanism；

Corresponding table, the i.e. corresponding table of terminal mac addresses and dns server address；Mac addresses are the mac addresses of STA, DNS Server address is the IP address of MPP nodes selected by the dns server address of STA, i.e. STA；

Three packets kidnap mechanism to be included：The abduction forwarding mechanism of general data bag, the abduction and response of ARP request bag The abduction forwarding mechanism of mechanism and DNS query response bag；

The abduction forwarding mechanism of general data bag, after Mesh nodes receive the general data bag of STA, intercepts and captures the packet, Source data packet mac addresses are extracted, judges whether it is the STA for accessing this Mesh nodes according to source mac addresses, only to accessing this Mesh The packet of the STA of node carries out abduction treatment, then judges that packet is destined for outer net or Intranet, only to being sent to outer net Packet carries out abduction treatment；Packet be access this Mesh nodes STA's and be sent to outer net, then by packet rs destination mac It is revised as in Mesh network a mac address for the optimal MPP nodes of communication condition in address；

The abduction of ARP request bag and acknowledgement mechanism, L2P agreements are distributed ARP table mechanism, and the core of the mechanism is storage The all arp response contents propagated in network give an IP address in some specific node groups, and client initiates one ARP request, after Mesh nodes receive ARP request bag, intercepts and captures and is directly forwarded to be stored with response bar destination node group Node, request sent as unicast packet, for cannot still be obtained using DAT mechanism response entry ARP request, agreement To be gone out by common ARP request packet broadcast；

When STA default gateway MPP1 cannot normal work when, due to the packet that STA is sent to outer net be using acquiescence net Mac addresses are closed as packet rs destination mac addresses, ARP request can be initiated and gone to obtain the mac addresses of default gateway, accessed in STA Mesh nodes at intercept and capture STA to the ARP request bag of default gateway, whether have response entry, have, then if searching in local DAT tables Directly generating an arp reply bag carries out response；Otherwise rung using the mac addresses of an optimal MPP node of communication condition Should, after STA receives arp reply, the packet that will just be sent to outer net sends；

The abduction forwarding mechanism of DNS query response bag, STA can first send a DNS query bag to dns server, search The corresponding IP address of the domain name, obtains that after response the network address could be accessed, and the dns server address and IP address of STA are certainly Dynamic to obtain, the dns server address of usual STA is the IP address of default gateway, and the default gateway of STA cannot normal work Make, the dns server failure of STA, it is impossible to provide domain name resolution service to STA, it is impossible to surfed the Net by way of accessing domain name, The Mesh nodes accessed in STA are kidnapped and by the purpose IP address in DNS query bag by STA's the DNS query bag of STA Default gateway ip address is revised as a public network dns server address, and it is optimal that DNS query then is forwarded a packet into communication condition MPP nodes, are sent by the MPP nodes, for DNS response bags, by source IP address in packet by public network server address Change back the IP address of the default gateway of STA.

Further, the single-chip microcomputer is provided with active echo interference suppression module, and the active echo interference suppresses The active echo interference suppression of module specifically includes as follows：

Step one：First it is echo self-interference letter to near-end sending signal in near-end node and the transmitting terminal of distant-end node NumberThe useful echo signal sent with distal endDifference dot product space vector：

With

Obtain actual near-end sending signal and distal end sending signal t^NE=β (θ_n)t^NE(n) and t^FE=α (θ_f)t^FE(n), Wherein θ_nAnd θ_fThe respectively transmission angle of near end signal and remote signaling；

Step 2：The reception signal of near-end communication node is：

t^R(n)=α (θ_f)H^FE(n)t^FE(n)+β(θ_n)H^NE(n)t^NE(n)+W(n)；

Wherein,It is that the actual transmission signal from far-end correspondent node is received Signal；AndIt is the actual its own transmission signal of near-end node； Proximally and distally jth (j=N is represented respectively₁,…,N_T) sending signal vector on strip antenna；

With

Then it is respectively the channel transfer functions of proximally and distally transmission signal；W (n) is channel additive white Gaussian noise；Its In, N_TRepresent communication node transmitting antenna number, N_RIt is reception antenna number, N_fIt is the every frame length of signal, ()^TRepresent to square The transposition oeprator of battle array or vector；

Step 3：By the best weight value vector of beamformerDot product reception signal t^R N () is obtained through the reception signal after beam formingIt is expressed as：

Build beamformer optimum right vector ω reality, due to sending signal angle, it is known that therefore using following formula as The approximate expression of optimum right vector：

ω=t^R(n)(t^NE(n))^H(t^NE(n)(t^NE(n))^H)^-1；

Further according toObtain through the reception signal after beam forming

Wherein ()^HRepresent to matrix or the conjugate transposition oeprator of vector；

Step 4：In receiving terminal by using self adaptation recurrence least square RLS algorithm to being mixed with self-interference, interchannel noise Reception signalSelf-interference suppression is carried out, the primary iteration number of times l=1 of RLS adaptive algorithms is made, and set most Big iterations K and starting step size μ is set according to the autocorrelation matrix of near end input signal^NE, sef-adapting filter it is initial Change weighted vector α^NE(0) and wave filter length M, start iterative process, set K=25, M=11,μ^NE=1；

Step 5：According to formulaAccording to Below equation obtains the estimation signal of near-end single antenna

Wherein j=1 ..., N_T, N_TTransmission antenna total number is represented, M is the length of sef-adapting filter, α^NEN () represents It is weighted vector,It is the reception signal suppressed by self-interference on j-th strip near-end reception antenna, It is the near end signal obtained on j-th strip near-end reception antennaEstimate；

J ＜ N_T, then j=j+1 is made, estimate the estimation signal on next reception antenna

J=N_T, then next step is advanced to；

Step 6：The weighted vector at n moment is updated according to below equationAnd Near-end sending signal t is exported according to iteration result^NEThe estimation signal of (n)

Step 7：From reception signalIn filter self-interference signal, obtain the estimation of remote signaling, afterwards will The signal sends into follow-up MIMO decoding detection units.

Operation principle：This is based on the complex foci space-time synchronous drilling control system of internet, radio frequency transceiving module For receiving and launching wireless network signal, staff is remotely grasped by internet using external equipment to single-chip microcomputer Control, Single-chip Controlling the first Pneumatic extension bar and the second Pneumatic extension bar adjust the transmitting route of laser, Single-chip Controlling the 3rd Pneumatic extension bar adjusts the position of workpiece, and laser spots are corresponded to needs the position of processing drilling, using being automatically positioned module So that positioning drilling is more precisely, by internet be sent to shooting picture outer by camera towards the inner cavity top of work box In portion's equipment, staff understands boring positioning situation in real time by external equipment, and equipment is caused by universal wheel and brake block Movement is convenient.

Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.

Claims (3)

1. a kind of complex foci space-time synchronous drilling control system based on internet, including base, single-chip microcomputer and external equipment, It is characterized in that：Protective cover is installed with the base, scanning fortune is installed with the inner left wall of the protective cover Dynamic drilling laser, is provided with scanning motion drilling laser modulator on the right side of the scanning motion drilling laser, described to sweep Retouch and laser bundling device is provided with the right side of motion drilling laser modulator, and the left and right sides of laser bundling device is electric by first Dynamic expansion link is arranged on the top of protective cover, is provided with speculum on the right side of the laser bundling device, and speculum left and right two Side is arranged on the top of protective cover by the second electric expansion bar, and static focus device is provided with immediately below the speculum, The intracavity bottom of the protective cover is from left to right disposed with power supply, controller box, cleaning laser and work box, institute The intracavity bottom for stating work box is installed with operating desk, is installed with four inwalls all around of the work box 3rd electric expansion bar, camera is provided with the right side inwall of the protective cover by the 3rd fixture, the single-chip microcomputer Input is electrically connected with the output end of power supply and camera respectively, the output end of the single-chip microcomputer respectively with scanning motion Drilling laser, scanning motion drilling laser modulator, the first electric expansion bar, the second electric expansion bar, cleaning laser, the Three electric expansion bars are electrically connected with the input for being automatically positioned module, and the single-chip microcomputer electrically connects with radio frequency transceiving module Connect, the external equipment is connected by internet with radio frequency transceiving module；

Four corners of the base bottom are mounted on being provided with brake block on universal wheel, and universal wheel；

The scanning motion drilling laser modulator is arranged on the top of protective cover by the first fixture；

The static focus device is fixedly mounted on the right side inwall of protective cover by the second fixture；

The cleaning laser is arranged on the underface of laser bundling device；

The work box is arranged on the underface of speculum；

Workpiece is provided with the operating desk；

The other end of the 3rd electric expansion bar is connected with workpiece；

Inner cavity top of the camera towards work box；

Chamber door corresponding with work box is movably installed with by hinge on the front end face of the protective cover.

2. the complex foci space-time synchronous drilling control system of internet is based on as claimed in claim 1, it is characterised in that institute State radio frequency transceiving module and be provided with middle multiple gateway terminal fast roaming method including a new corresponding table and three data Bag abduction mechanism；

Corresponding table, the i.e. corresponding table of terminal mac addresses and dns server address；Mac addresses are the mac addresses of STA, DNS service Device address is the IP address of MPP nodes selected by the dns server address of STA, i.e. STA；

Three packets kidnap mechanism to be included：General data bag kidnaps forwarding mechanism, the abduction of ARP request bag and acknowledgement mechanism With the abduction forwarding mechanism of DNS query response bag；

The abduction forwarding mechanism of general data bag, after Mesh nodes receive the general data bag of STA, intercepts and captures the packet, extracts Source data packet mac addresses, judge whether it is the STA for accessing this Mesh nodes according to source mac addresses, only to accessing this Mesh nodes The packet of STA carry out abduction treatment, then judge that packet is destined for outer net or Intranet, only to being sent to the data of outer net Bag carries out abduction treatment；Packet be access this Mesh nodes STA's and be sent to outer net, then by packet rs destination mac addresses It is revised as in Mesh network a mac address for the optimal MPP nodes of communication condition；

The abduction of ARP request bag and acknowledgement mechanism, L2P agreements are distributed ARP table mechanism, and the core of the mechanism is storage network All arp response contents of middle propagation give an IP address in some specific node groups, and client initiates an ARP Request, after Mesh nodes receive ARP request bag, intercepts and captures and is directly forwarded to the section responded in bar destination node group that is stored with Point, request is sent as unicast packet, and for the ARP request that response entry cannot be still obtained using DAT mechanism, agreement will be by Common ARP request packet broadcast is gone out；

When STA default gateway MPP1 cannot normal work when, because the packet that STA is sent to outer net is to use default gateway Mac addresses can initiate ARP request and go to obtain the mac addresses of default gateway as packet rs destination mac addresses, be accessed in STA ARP request bags of the STA to default gateway is intercepted and captured at Mesh nodes, whether has response entry in the local DAT tables of lookup, had, then directly Delivering a child into an arp reply bag carries out response；Otherwise responded using the mac addresses of an optimal MPP node of communication condition, After STA receives arp reply, the packet that will just be sent to outer net sends；

The abduction forwarding mechanism of DNS query response bag, STA can first send a DNS query bag to dns server, search the domain The corresponding IP address of name, obtains that after response the network address could be accessed, and the dns server address and IP address of STA are to obtain automatically Take, the dns server address of usual STA is the IP address of default gateway, and the default gateway of STA cannot normal work, STA Dns server failure, it is impossible to give STA provide domain name resolution service, it is impossible to surfed the Net by way of accessing domain name, in STA The Mesh nodes of access by the DNS query bag of STA kidnapped and by the purpose IP address in DNS query bag by STA acquiescence Gateway ip address is revised as a public network dns server address, and DNS query then is forwarded a packet into the optimal MPP sections of communication condition Point, is sent by the MPP nodes, for DNS response bags, source IP address in packet is changed back by public network server address The IP address of the default gateway of STA.

3. the complex foci space-time synchronous drilling control system of internet is based on as claimed in claim 1, it is characterised in that institute State single-chip microcomputer and be provided with active echo interference suppression module, the active echo of the active echo interference suppression module is done Disturb suppressing method specifically include it is as follows：

Step one：It is echo self-interference signal first to near-end sending signal in near-end node and the transmitting terminal of distant-end node The useful echo signal sent with distal endDifference dot product space vector：

$\mathrm{\β}\left({\mathrm{\θ}}_n\right)=(1,e^{-{\mathrm{j\πsin\θ}}_n},...,e^{-j\mathrm{\π}(N_k-1){\mathrm{sin\θ}}_n},...,e^{-j\mathrm{\π}(N_R-1){\mathrm{sin\θ}}_n}),(k=1,...,N_T);$

With

Obtain actual near-end sending signal and distal end sending signal t^NE=β (θ_n)t^NE(n) and t^FE=α (θ_f)t^FE(n), wherein θ_n And θ_fThe respectively transmission angle of near end signal and remote signaling；

Step 2：The reception signal of near-end communication node is：

$t^R\left(n\right)={\[t_{N_1}^R\left(n\right),...,t_j^R\left(n\right),...,t_{N_R}^R\left(n\right)\]}^T\∈C^{N_R\×N_f}:$

t^R(n)=α (θ_f)H^FE(n)t^FE(n)+β(θ_n)H^NE(n)t^NE(n)+W(n)；

Wherein,It is that the actual transmission signal from far-end correspondent node is collected mail Number；AndIt is the actual its own transmission signal of near-end node； Proximally and distally jth (j=N is represented respectively₁,…,N_T) sending signal vector on strip antenna；

$H^{FE}\left(n\right)=\[h_{N_1}^{FE}\left(n\right),...,h_j^{FE}\left(n\right),...,h_{N_T}^{FE}\left(n\right)\]\∈C^{N_R\×N_T}$

With

Then it is respectively the channel transfer functions of proximally and distally transmission signal；W (n) is channel additive white Gaussian noise；Wherein, N_T Represent communication node transmitting antenna number, N_RIt is reception antenna number, N_fIt is the every frame length of signal, ()^TRepresent to matrix or arrow The transposition oeprator of amount；

Step 3：By the best weight value vector of beamformerDot product reception signal t^R(n) Reception signal to after through beam formingIt is expressed as：

$t_{far\_first}^R\left(n\right)=\mathrm{\ω}\left(n\right)\·t^R\left(n\right),$

The optimum right vector ω reality of beamformer is built, due to sending signal angle, it is known that therefore using following formula as optimal The approximate expression of weight vector：

ω=t^R(n)(t^NE(n))^H(t^NE(n)(t^NE(n))^H)^-1；

Further according toObtain through the reception signal after beam forming

Wherein ()^HRepresent to matrix or the conjugate transposition oeprator of vector；

Step 4：Connect to being mixed with self-interference, interchannel noise by using self adaptation recurrence least square RLS algorithm in receiving terminal The collection of letters numberSelf-interference suppression is carried out, the primary iteration number of times l=1 of RLS adaptive algorithms is made, and maximum is set and changed Generation number K and starting step size μ is set according to the autocorrelation matrix of near end input signal^NE, the initialization power of sef-adapting filter Value vector α^NE(0) and wave filter length M, start iterative process, set K=25, M=11,μ^NE=1；

Step 5：According to formulaAccording to following Formula obtains the estimation signal of near-end single antenna

$\begin{array}{c}{\hat{t}}_j^{NE}\left(n\right)={\left({\mathrm{\α}}^{NE}\right(n\left)\right)}^T{t}_{far\_first,j}^R\left(n\right)=\underset{i=1}{\overset{M}{\Σ}}{\mathrm{\α}}_i^{NE}\left(n\right)t_{far\_first,j}^R(n-i+1)\\ ={\left({\[{\mathrm{\α}}_1^{NE}\left(n\right),\mathrm{...},{\mathrm{\α}}_i^{NE}\left(n\right),\mathrm{...},{\mathrm{\α}}_M^{NE}\left(n\right)\]}^T\right)}^T\·{\[t_{far\_first,j}^R\left(n\right),\mathrm{...},t_{far\_first,j}^R(n-i+1),\mathrm{...},t_{far\_first,j}^R(n-M+1)\]}^T\\ =\[{\mathrm{\α}}_1^{NE}\left(n\right),\mathrm{...},{\mathrm{\α}}_i^{NE}\left(n\right),\mathrm{...},{\mathrm{\α}}_M^{NE}\left(n\right)\]\·{\[t_{far\_first,j}^R\left(n\right),\mathrm{...},t_{far\_first,j}^R(n-i+1),\mathrm{...},t_{far\_first,j}^R(n-M+1)\]}^T\\ =\underset{i=1}{\overset{M}{\Σ}}{\mathrm{\α}}_i^{NE}\left(n\right)t_{far\_first,j}^R(n-i+1)\end{array}$

Wherein j=1 ..., N_T, N_TTransmission antenna total number is represented, M is the length of sef-adapting filter, α^NEWhat n () represented is power Value vector,It is the reception signal suppressed by self-interference on j-th strip near-end reception antenna,It is jth The near end signal obtained on bar near-end reception antennaEstimate；

J ＜ N_T, then j=j+1 is made, estimate the estimation signal on next reception antenna

J=N_T, then next step is advanced to；

Step 6：The weighted vector at n moment is updated according to below equationAnd according to Iteration result output near-end sending signal t^NEThe estimation signal of (n)

Step 7：From reception signalIn filter self-interference signal, the estimation of remote signaling is obtained, afterwards by the signal The follow-up MIMO decoding detection units of feeding.