CN102325011A - Error-free lossless communication - Google Patents
Error-free lossless communication Download PDFInfo
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Abstract
The invention discloses error-free lossless communication. A main principle is that: besides data 0 and 1, an error judgment state is set for protecting data in binary digital communication, and does not produce any influence in normal communication; however, once an interference signal appears, error judgment state alarming may be triggered at once, an error correction signal is transmitted in real time to inform all equipment participating in the communication, and equipment transmitting information instantly stops the communication after receiving the error correction signal and retransmits the information of which transmission is not finished in the next time until the information is transmitted to all receiving equipment without any error and loss. Any other error judgment technology is not required, namely error judgment data is not required to be transmitted, and mutual acknowledgement is not required, so safety and reliability are ensured, communication efficiency can be greatly improved and communication speed can be greatly increased.
Description
Technical field
The present invention relates to a kind of new method of data serial communication.
Background technology
Traditional binary digit communication has only 0 and 1 two kind of data mode, when running into interference signal, just inevitably causes data transmission fault.Modern high Capacity Communication System has a lot of hanging equipments on bus; Carry out addressing through destination address in the Frame and speaker address; In case Frame is wrong; Use and existing declared wrong technology determination and wrongly also can only abandon data, not having correct address is to notify transmit leg to resend Frame.Existing declare wrong technology can not 100% faults, more do not have error correction, must lose and need the information that transmits in case error of transmission takes place.
Summary of the invention
The cardinal principle of " zero defect do not have lose communication " is: binary digit communication except data 0 and 1 also promising protected data and be provided with declare wrong state; Has no influence during proper communication; In case running into interference signal can cause immediately and declare wrong status alert; And send error correction signal in real time and notify all equipment (be equivalent to real-time broadcast announcement all devices: current communication makes mistakes) in communication; The current equipment that is sending information receives that this error correction signal stops sending immediately, and uncompleted transmission information must resend, and does not have until zero defect with losing message transmission is arrived all receiving equipments.
One, information transmits rule
Information is transmitted by the pulse of a string different intervals; The binary string row communication except data 0 and 1 also promising protected data and be provided with declare wrong state; The unit gap time T is represented one " data "; Blanking time, Tk represented another one " data ", and blanking time, Tz represented " transmit and stop ", and blanking time＜Te representes " error in data "; Their Rankine-Hugoniot relations is: Tk/2＜Te＜T＜Tk＜Tz＜2T, such Rankine-Hugoniot relations can run in communication and cause the error in data warning when disturbing.Also have transition period: after the scouting pulse is " during the scouting "=0～T; During the ultimate range≤scouting that directly transmits/every meter time-delay that comes transmission back of transmission medium; From the blanking time of scouting pulse to initial pulse be " declaring the competition phase "=0～Tk (containing random delay); Uncontested sending mode need not scouted pulse; " transmit and stop " back and also have " declaring the wrong error correction phase "=T～Tz, crossed " declaring the wrong error correction phase " sign off, need transmission information to also have " forward delay interval phase "=T/4～Tz (containing random delay).
Information is sent, and transmission " scouting pulse " earlier scouts whether the transmission competition is arranged when bus is idle, has other competition pulses just to change at " declaring the competition phase " and receives the follow-up information of information state continuation reception; Crossed " declaring the competition phase " uncontested pulse and just sent " initial pulse "; Uncontested sending mode need not scouted pulse, can directly send initial pulse, is respectively T the blanking time of each pulse and previous pulse later on or Tk transmits binary data continuously; Having sent data need only stop to send; Crossed just expression Tz blanking time and " transmitted and stop ", bus that smooth again the mistake " declared the wrong error correction phase " gets into idle condition, and data transfer task has been accomplished in expression correctly; Can delete the information of having sent; Need not to wait for and reply affirmation back and forth, can receive new information at any time, also need wait for " forward delay interval phase " transmission of staggering the time again like the information of will sending.After sending " initial pulse ", in case discovery has other pulse to report to the police with regard to sending error correction signal immediately, stop to send data and change into accepting state, uncompleted transmission information must resend.
Error correction signal is the pulse of sending blanking time＜Te, and the notice all devices has " error in data ".
The recipient carries out filtering to " during the scouting " after when bus is idle, receiving first " scouting pulse "; All competition pulses that filtering possibly occur; Receive " initial pulse " and data pulse subsequently again during having crossed scouting, the blanking time of calculating adjacent two pulse front edges, blanking time >=Te representes normal data; With the intermediate point of T and Tk distinguish data and the displacement be saved in the reception buffering area, this differentiation data method has bigger range of tolerable variance.Cause the increase pulse to represent " error in data " if having to disturb, send error correction signal immediately and report to the police with regard to necessarily having blanking time＜Te.Receive that at every turn pulse all will be provided with timer time with Tz again; Timer overflows just expression and " transmits and stop "; Whether the information that the front does not have " error in data " to report to the police and just in " declaring the wrong error correction phase ", checks reception is legal and complete; Overflow if there is interference to cause minimizing (losing) pulse to be bound to cause timer in advance, premature termination can cause the information of reception illegal or imperfect, sends error correction signal immediately and reports to the police.Interference causes increase or reduces pulse and all can cause warning (the information overlength of reception also can be reported to the police), if alarm free explains that then the information of reception is correct, need not to re-use the wrong technology of declaring of other and comes verification.Crossed " declaring the wrong error correction phase " bus and just got into idle condition, can receive new information at any time, also need wait for " forward delay interval phase " transmission of staggering the time again like the information of will sending.
Pulse is transmitted in medium has time-delay; Communication pattern is sent in free competition needs " scouting pulse " and " during the scouting ", " declaring the competition phase "; When an equipment was declared the idle transmission scouting of bus pulse, other remote equipment possibly have to send before this scouted pulse, and a period of time of just need delaying time just can be transferred to here; Therefore possibly have a lot of scouting pulses during scouting, receive the competition pulse and just need dodge.Also possibly in-plant two scouting pulses overlap, both sides can not detect the other side's scouting pulse, and the transmission initial pulse of therefore need staggering the time is dodged once more.Initial pulse is later on data pulse, and data do not admit of inclined to one side mistake, so initial pulse has competition pulse or disturbing pulse all will send the error correction signal warning later on.
The communication pattern of uncontested transmission (as: master and slave mode, modes such as token communication cycle) just can not use " scouting pulse " and " during the scouting ", " declaring the competition phase ", and first just sends " initial pulse ".
Recommend but do not limit the practicality of a kind of data and blanking time to concern: data " 0 "=T=2^i* seconds; Wherein i is a negative integer; The unit gap time T can change as required, data " 1 "=3T/2, the ' 0/1 ' separation=5T/4 that declares data; " error in data "＜7T/8; " transmit stop "=7T/4 has " declaring the wrong error correction phase "=3T/2 after " transmit and stop ", needs transmission information must wait for that " forward delay interval phase "=3T/4 adds random delay 0～3T/4 and staggers the time to dodge each other to send again and scout pulse after " declaring the wrong error correction phase "; After the scouting pulse is " during the scouting "=T/2; The every meter time-delay≤T/2 that comes transmission back of ultimate range * transmission medium that directly transmits be that " declaring the competition phase "=during scouting back T/4 that delays time adds random delay 0～T/4 and staggers the time and dodge the transmission initial pulse each other from the blanking time of scouting pulse to initial pulse, the clocking error of each equipment＜| ± T/16|.
Further describing of communication process: the transmission order of information is the lowest order that moves to last byte since the highest order of first byte by turn continuously backward.Need to send data and at first declare the bus free time; Find in during sending first and scouting postimpulse T/2 and scout other competition pulses just forward to receive scout during; Do not compete the pulse T/4 (cushioning the clock timing error of each equipment) that just delays time again during the scouting and add random delay 0～T/4 transmission initial pulse of staggering the time; During waiting initial pulse to be sent, there are other competition pulses just to forward the initial pulse state that receives to, continue to receive the data of back.
Even supervention send data pulse, be T or Tk the blanking time of data after the initial pulse, all＜and Tz can not cause " transmit and stop ".Send data and need only stop sending pulse; Tz will cause " transmit and stop " blanking time after waiting for last pulse; After " transmit and stop ", also to wait for " declaring the wrong error correction phase "; If the recipient finds the error of transmission meeting and in " declaring the wrong error correction phase ", send error correction signal, receive that error correction signal will arrange to resend information, but need not to reply the transmission error correction signal.Crossed " declaring the wrong error correction phase " and represented that just once communication is accomplished; Bus gets into idle condition; At any time can receive new Frame; But the information of will sending once more will wait for that also " forward delay interval phase " cushion the clock timing error of each equipment, adds the random delay transmitting time that can stagger and reduces and send competition.
Even if there are not other disturbing pulses to accomplish the transmission task during the whole transmission, can guarantee information zero defect do not have and be transferred to all receiving equipments with losing, therefore can delete the information of having sent, need not to reply back and forth affirmation.
It is to allow a lot of equipment participation transmission competitions that the recipient carries out filtering to " during the scouting ", but will guarantee total time-delay＜T/2 of these competition pulses, just: every meter time-delay≤T/2 that comes transmission back of ultimate range * transmission medium of direct transmission.First pulse that the back receives during the scouting is an initial pulse, do not have＜restriction that Te makes mistakes to initial pulse from scouting pulse, but from scout pulse Tz will cause " transmit and stop " blanking time, this sends all to dodge after the competition and causes.
During the continuous data burst transmissions, running into the interference signal that can cause error in data, must be to increase or reduced pulse.Increase the pulse meeting and cause the blanking time＜Te that has a set of pulses at least, cause " error in data " immediately and report to the police, or transmit leg send error correction signal its blanking time also＜Te; Reduce pulse and be bound to cause blanking time＞Tz to cause " transmit and stop " in advance,, can cause " error in data " equally and report to the police owing to be that the premature termination message length is not enough certainly.Blanking time, Tz＜2T not only had known " transmit and stop " function, also had real time discriminating to disturb the function that makes the mistake.Communication period finds that for the first time error of transmission sends error correction signal (send and just can reach the warning purpose 1 time) immediately; Blanking time＜the Te of error correction signal; It can notify all devices (equipment that comprises the information of sending) communication to make mistakes; Requirement stops communication, and uncompleted transmission information resends when next bus is idle.The data communication of this mode any interference signal of being fearless can guarantee the data zero defect do not had with losing and is sent to the recipient, need not to use other to declare wrong technology, also need not to reply back and forth affirmation.
Two, network classification telecommunication management
Zero defect does not have the communications applications of losing when high-capacity bus network; Recommend but do not limit the following method that adopts; High-capacity bus network is divided into three grades; Use " striding grade transfer connects " equipment to carry out the data relay management between the networks at different levels, it has two bus runs of physically isolating of up-downgoing, and an own network area that belongs to the classification position number is arranged.Network internal at different levels can increase " relaying expansion at the same level " equipment, and it all is same level that two bus runs of up-downgoing are also arranged, and it can carry out relaying at the same level with the data of two bus runs of up-downgoing and transmit.
Adopt the distribution method of " not isometric address ", the node address of " master control management equipment " use >=0C0H byte of networks at different levels, wherein: the 0CxH=primary network station; 0CFH=network internal broadcast address at the corresponding levels, 0DxH=two grade network, 0ExH=three-level network; 0F0H～0FDH=the Internet interconnecting device; 0FEH=debugging programming equipment, 0FFH=sky=broadcast address, other " terminal equipments " use the node address of two byte 0000H～9FFFH; Two bytes 0A000H～0AFFFH=two grade network regional address; Two bytes 0B000H～0BFFFH=three-level network regional address when needing internetwork communication, can increase the address, network area in its node address front.The address capability of this method of salary distribution reaches 687G, and just can differentiate network-level and the address size that go here and there its address in the first byte (8bit) of variable-length address, makes graded communication management very convenient.
The length of " not isometric address " is 1～6 byte, and form is: the device address of " three-level network regional address+two grade network regional address+node address "=0BxxxH+0AxxxH+1～2 bytes.The just ability addressing communication of node address of equipment is only used in the address, network area that when intra-network communication at the corresponding levels, does not need the front.
Each equipment all has the node address of oneself; Node address=the 0000H of " striding grade transfer connects " equipment; Node address=the 00xxH (non-0000H) of " relaying expansion at the same level " equipment, they all note the address (all wanting the registered address during all devices power-up initializing) of all device registrations of row of channels.Receive address realm that destination address surpasses device registration just to the data feedback channel forwarding information at down going channel, receive that at data feedback channel destination address is that the address of device registration is just to the down going channel forwarding information.The information of destination address=0FFH (broadcast address) can only transmit from top to bottom, and the information of destination address=0CFH (network internal broadcast address at the corresponding levels) can only be in network internal cross drive at the corresponding levels.
The down going channel of transfer, trunking also is a communication management device; All be in " same power module " with its direct-connected conventional equipment; Everybody uses the communication of identical distance time T value; This T value is by the control of down going channel management equipment, must satisfy: the every meter time-delay≤T/2 that comes transmission back of ultimate range * transmission medium that directly transmits.
Three, data frame format
Not having the characteristics of losing communication to zero defect, recommend but do not limit to adopt following data frame format, is that unit transmits information continuously with the Frame.Frame is made up of three parts: 1, destination address, 2, packet, 3, the speaker address; The first two part of Frame must have, and third part can not have (the major state word by in the packet has determined whether third part); The form of destination address and speaker address needs all that method is write, so the length of address is confirmed according to " not isometric address ".
First byte of the second portion in the Frame " packet " is " a major state word "; 8 of one bytes are represented with D7～D0 respectively; Its highest order D7=0 representes not have the speaker address of third part, and D7=1 representes to have the speaker address of third part, and the speaker address can not be broadcast address (like address blanks such as 0FFH, 0CFH); D6D5 data splitting 0～3 expression communication protocol number; Back D4D3D2D1D0 data splitting is represented length 1～31 byte (data packet length＞0) of " packet ", and " packet " is made up of " major state word " (it must have, back data user oneself definition)+n byte data; The total length of Frame is obtained by three partial-length additions, total length=2～32 bytes, and it is that whether correct discriminant information transmit one of foundation.
The data of the different bytes of the communication protocol in the packet " major state word " number+heel can be combined into a variety of session informations, and these data are all defined by the user voluntarily, also can insert enciphered message.Transfer and trunking can be checked the form and the total length of Frame, and no matter the content of data, the switching support that meets the requirements and just can obtain transfer or trunking.
Embodiment
This communication means is useful in any effective communication structure and medium, recommends a cover power supply and the twisted pair construction bus system of communicating by letter and merging, and the supply voltage of bus is generally 6V～24V; Use can recover fuse and carry out cascade protection and isolation; Inductance coil of serial connection between power supply and the bus, on the inductance coil and a high-frequency diode, the back electromotive force of absorption inductor; Adopt narrow " short circuit pulse " to communicate; Utilize different transmission blanking time information between " short circuit pulse ", the distance of the interior direct communication of bus " same power module " is relevant with communication speed, can continue the distance of communication through " relaying expansion equipment ".Every meter time-delay＜20nS that comes transmission back of general twisted-pair power cable, when T=2^ (14) * ≈ second 61uS, ultimate range≤1525 of directly transmitting meter, and when T=2^ (17) * ≈ second 7.6uS, directly ultimate range≤190 of transmission meter.
The single chip microcomputer of selecting timer function for use is as CPU; Delivery outlet is connected to high-power components through the R/C high pass filter; This high-power components is connected across on the bus; Can make bus short circuit during conducting, CPU triggers high-power components can produce narrow " short circuit pulse " to bus, and just can send data message the blanking time between the control " short circuit pulse ".High-power components can be selected triode or MOSFET for use, and serial connection R/C high pass filter is the conducting that the assurance high-power components can only be done the short time.This is high-power communication pattern, has very strong interference free performance, can with the AC power cord string at a conduit wiring.
The input port of single chip microcomputer is connected on the bus through the R/C high pass filter, can catch the pulse front edge on the bus and cause to interrupt, and receives the communication pulse on the bus continuously, and the blanking time of calculating pulse just can read data information.The R/C high pass filter of input port can translate into the pulse signal on the bus and be fit to the level that CPU catches, and does not therefore have common mode disturbances.
The UART serial communication port of single chip microcomputer can communicate with other equipment; Transfer or trunking uplink and downlink passage just use the UART serial communication exchange message of photoelectric coupler isolation; Owing to be that closely One-to-one communication generally can not made mistakes; Can notify the other side to resend information timely and conveniently even make mistakes, therefore can not influence zero defect have the communication of losing yet.
Stride grade transferring equipment and relaying expansion equipment two bus runs of uplink and downlink are all arranged; Bear two message switching work between " same power module ", employed " T " value size (selecting) in its down going channel control descending " same power module " by corresponding contact pin.Use selected " T " transmissions " public network address broadcasting " behind the electrifying startup, form: CFH 05H BxxxH AxxxH (address, 4 byte network area), and relatively also can often send " public network address broadcasting " during the free time in bus.
Grade transferring equipment of striding at different levels are all used the 0000H address, store the home network area address of 2 bytes in addition, after receiving information, carry out transfer according to the zone of destination address and connect.Data feedback channel receives that the destination address of information (meets the home network area address) and just sends toward the down going channel transfer in the one's respective area; And 2 byte home network area addresses in the destination address are deleted; The final objective address has only the node address of 1～2 byte, and conventional equipment is only accepted the information of this 1～2 byte destination address.Down going channel receives that the destination address of information exceeds just sending toward the data feedback channel transfer of local zone, and before the speaker address, increases the home network area address of 2 bytes.When needing trans-regional communication; Destination address need be with the other side's address, network area; And the speaker address need only be the node address of oneself 1～2 byte, need consider when transfer speaker address lengthening 4 bytes at most simultaneously, and the Frame behind the lengthening can not surpass 32 bytes.
Native system equipment is supported hot plug, and the initial work of the start that powers on has: power supplys such as delay a period of time are stable, do the initial work of this machine; Power on starting stage of start can only receive and can not send any pulse; Automatically adapt to bus " T " value and regulate communication speed; Until receiving legal Frame (no matter content of session); Synchronously just can send information with " T " value of bus since can receive the explanation of proper data frame, the information that at first will send is the device address registration.The session of device registration address: destination address=0000H, packet=81H, speaker address=this device address (address blank can not be registered).That is: 0000H 81H xxxxH has registered the address and has just got into normal operating conditions.
System's per minute all can be broadcasted form by tranmitting data register: " FFH 03H xx (during 1 byte BCD) xx (1 byte BCD branch) ", date of shipping broadcasting 0 o'clock every day, form: " FFH 05H xxxx (2 byte BCD) xx (the 1 byte BCD month) xx (1 byte BCD day) ".They are to send (can proofread and correct) by grade transferring equipment of striding of top layer, respectively stride a grade transfer, the relaying expansion equipment is transmitted, and whole system is used identical clock information.
Communication quality for the test bus system; Set up a cover debugging evaluating system, this system is by tens conventional equipments, a 0000H transferring equipment and a composition such as 0FEH debugging programming equipment; 0FEH debugging programming equipment is the core of debugging evaluating system; Its writes down, adds up various Debugging message, and is connected with compunlcation, can exchange various information with computer.
Commissioning device all has the garble status word of 1 byte, and it is recorded in the various error conditions that occur in the communication process, sends the back with regard to clear 0.One " Debugging message session " arranged; Its destination address=FEH (debugging programming equipment)+84H+ garble status word+at every turn add 1 counts value+gather adds up and is 0 value+speaker address (common commissioning device address); After getting into continuous debugging mode; As long as there is the free time of transmission just to send this session, have a lot of equipment so all the time and when bus is idle, participate in sending competition, also can add up per minute fully loaded efficient communication byte number." add 1 counts value " initially at every turn=0; Adding 1 during each later on the transmission increases progressively; 0FEH (debugging programming equipment) also writing down each common commissioning device this " add 1 counts value " at every turn, receive that at every turn " Debugging message session " just adds 1 and increase progressively the back and compare with these data of receiving, equates that expression is free from mistakes; Otherwise be exactly that information has and loses, the number of times that record is lost.Whether " garble status word " can be added up type of error and the number of times that occurs in the communication, have " gather add up and be 0 value " ability checking data frame wrong.
Get into continuous debugging mode by 0FEH debugging programming Equipment Control, also have the session of sampling each other between the common commissioning device and replying the other side's data at continuous debugging mode, these sessions can not have mistake and lose.Also the very important person is for adding various interference signals between limber up period, and these interference signals are at random sent by interferance generator.Through long-term continuous operation debugging, in that to have interferance generator to add fashionable, average per minute fully loaded efficient communication byte number can reduce, but has no the fault of data frame transfer mistake and loss of data, reaches designing requirement fully.
The invention has the beneficial effects as follows: zero defect does not have the technology of losing communication makes safe and reliable that communication becomes, and needn't worry that except hardware fault communication data can make mistakes or lose because of interference.Need not other and declare wrong technology (need not transmit and declare wrong data), need not to reply back and forth affirmation, can improve the efficient and the speed of communication greatly.
Claims (5)
1. a zero defect does not have the communication of losing; Information is transmitted by the pulse of a string different intervals; It is characterized in that: the unit gap time T is represented one " data ", and blanking time, Tk represented another one " data ", and blanking time, Tz represented " transmit and stop "; Blanking time＜Te representes " error in data ", and their Rankine-Hugoniot relations is: Tk/2＜Te＜T＜Tk＜Tz＜2T; The information transmission is sent " initial pulse " earlier and is sent the binary data pulse that be T or Tk blanking time more continuously, accomplishes just expression transmission wait Tz blanking time and " transmits termination ", after " declaring the wrong error correction phase " bus entering idle condition; In case discovery has other pulse just to send the error correction signal warning immediately, stop to send data and change into accepting state during the transmission, uncompleted transmission information must resend; Message pick-up; Receive " initial pulse " and later pulse; Calculate the blanking time of adjacent two pulses, blanking time >=Te representes that normal data gives and preserve, and blanking time＜Te representes that " error in data " sends error correction signal immediately and report to the police; Blanking time >=Tz representes " transmit and stop "; Whether the information that the front does not have " error in data " to report to the police and just in " declaring the wrong error correction phase ", checks reception is legal and complete, if the wrong error correction signal that just sends immediately of the information that receives is reported to the police, crossed " declaring the wrong error correction phase " bus entering idle condition; Error correction signal is the pulse of sending blanking time＜Te.
2. zero defect according to claim 1 does not have the communication of losing; Communication pattern is sent in free competition; It is characterized in that: transmit leg sends " scouting pulse " earlier and scouts whether the competition of transmission is arranged when bus is idle; Having other competition pulses just to change at " declaring the competition phase " receives the follow-up information of information state continuation reception, has crossed " declaring the competition phase " uncontested pulse and just sent " initial pulse "; The recipient receives that when bus is idle first " scouting pulse " back carries out filtering to " during the scouting ", and all competition pulses that filtering possibly occur have been crossed and received " initial pulse " and data pulse subsequently again during scouting; During the ultimate range≤scouting that directly transmits/every meter time-delay that comes transmission back of transmission medium.
3. zero defect according to claim 1 and 2 does not have the communication of losing; The relation of a kind of data and blanking time is characterized in that: data " 0 "=T=2^i* seconds, wherein i is a negative integer; The unit gap time T can change as required; Data " 1 "=3T/2, declare data ' 0/1 ' separation=5T/4, " error in data "＜7T/8; " transmit and stop "=7T/4; After " transmit stop " " declaring the wrong error correction phase "=3T/2 is arranged, need transmission information must wait for that " forward delay interval phase "=3T/4 adds random delay 0～3T/4 and staggers the time to send again and scout pulse after " declaring the wrong error correction phase ", scouting after the pulse is " during the scouting "=T/2; The every meter time-delay≤T/2 that comes transmission back of ultimate range * transmission medium that directly transmits be that " declaring the competition phase "=during scouting back T/4 that delays time adds random delay 0～T/4 transmission initial pulse of staggering the time from the blanking time of scouting pulse to initial pulse.
4. zero defect according to claim 1 and 2 does not have the communication of losing; The network classification telecommunication management; It is characterized in that: high-capacity bus network is divided into three grades; Use " striding grade transfer connects " equipment to carry out the data relay management between the networks at different levels, it has two bus runs of physically isolating of up-downgoing, and an own network area that belongs to the classification position number is arranged; Network internal at different levels can increase " relaying expansion at the same level " equipment, and it all is same level that two bus runs of up-downgoing are also arranged, and it can carry out relaying at the same level with the data of two bus runs of up-downgoing and transmit; Adopt the distribution method of " not isometric address ", the node address of " master control management equipment " use >=0C0H byte of networks at different levels, wherein: the 0CxH=primary network station; 0CFH=network internal broadcast address at the corresponding levels, 0DxH=two grade network, 0ExH=three-level network; 0F0H～0FDH=the Internet interconnecting device; 0FEH=debugging programming equipment, 0FFH=sky=broadcast address, other " terminal equipments " use the node address of two byte 0000H～9FFFH; Two bytes 0A000H～0AFFFH=two grade network regional address; Two bytes 0B000H～0BFFFH=three-level network regional address when needing internetwork communication, can increase the address, network area in its node address front; The length of " not isometric address " is 1～6 byte; Form is: " three-level network regional address+two grade network regional address+node address "; The just ability addressing communication of node address of equipment is only used in the address, network area that when intra-network communication at the corresponding levels, does not need the front.
5. zero defect according to claim 1 and 2 does not have the communication of losing; Data frame format is that unit transmits information continuously with the Frame, and it is characterized in that: Frame is made up of three parts: 1, destination address; 2, packet; 3, speaker address, the first two part of Frame must have, and third part can not have; The form of destination address and speaker address needs all that method is write, so the length of address is confirmed according to " not isometric address "; First byte of the second portion in the Frame " packet " is " a major state word "; 8 of one bytes represent with D7～D0 that respectively its highest order D7=0 representes not have the speaker address of third part, and D7=1 representes to have the speaker address of third part; The speaker address can not be a broadcast address; D6D5 data splitting 0～3 expression communication protocol number, back D4D3D2D1D0 data splitting is represented length 1～31 byte of " packet ", " packet " is made up of " major state word "+n byte data; The total length of Frame is obtained by three partial-length additions, total length=2～32 bytes, and it is that whether correct discriminant information transmit one of foundation; The data of the different bytes of the communication protocol in the packet " major state word " number+heel can be combined into a variety of session informations, and these data are all defined by the user voluntarily, also can insert enciphered message; Transfer and trunking can be checked the form and the total length of Frame, and no matter the content of data, the switching support that meets the requirements and just can obtain transfer or trunking.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242898A (en) * | 2013-06-09 | 2014-12-24 | 中国船舶重工集团公司第七一三研究所 | Serial communication crosstalk preventing method |
| CN108282793A (en) * | 2017-01-05 | 2018-07-13 | 中兴通讯股份有限公司 | A kind of detection method and device of the performance indicator of cordless communication network |
| CN108289012A (en) * | 2018-01-25 | 2018-07-17 | 南京科远自动化集团股份有限公司 | BIT error correction based on correlated characteristic communicates coding/decoding method |
-
2011
- 2011-10-25 CN CN201110327947A patent/CN102325011A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242898A (en) * | 2013-06-09 | 2014-12-24 | 中国船舶重工集团公司第七一三研究所 | Serial communication crosstalk preventing method |
| CN108282793A (en) * | 2017-01-05 | 2018-07-13 | 中兴通讯股份有限公司 | A kind of detection method and device of the performance indicator of cordless communication network |
| CN108289012A (en) * | 2018-01-25 | 2018-07-17 | 南京科远自动化集团股份有限公司 | BIT error correction based on correlated characteristic communicates coding/decoding method |
| CN108289012B (en) * | 2018-01-25 | 2020-08-14 | 南京科远智慧科技集团股份有限公司 | BIT error correction communication decoding method based on correlation characteristics |
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Application publication date: 20120118 |