CN103777921A - Instruction transmission system with high reliability - Google Patents
Instruction transmission system with high reliability Download PDFInfo
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- CN103777921A CN103777921A CN201210408194.XA CN201210408194A CN103777921A CN 103777921 A CN103777921 A CN 103777921A CN 201210408194 A CN201210408194 A CN 201210408194A CN 103777921 A CN103777921 A CN 103777921A
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Abstract
The invention provides an instruction transmission system with high reliability. The instruction transmission system with the high reliability comprises an instruction issue computer, an instruction collecting computer (1), an instruction collecting computer (2) and an instruction responding mechanism, wherein the instruction issue computer gives out instructions to the instruction collecting computer (1) and the instruction collecting computer (2), the instruction collecting computer (1) and the instruction collecting computer (2) are mutual redundant backups, receive the instructions given out by the instruction issue computer together and send the instructions to the instruction responding mechanism, and the instruction responding mechanism receives the instructions transmitted by the instruction collecting computer (1) or the instruction collecting computer (2) and responds accordingly. The instruction transmission system with the high reliability ensures the reliability, the effectiveness and the promptness of instruction data transmission under the condition of network communication faults.
Description
Technical field
The invention belongs to computer communication technology field, be specifically related to a kind of high reliability command system.
Background technology
In day by day informationalized society now, cyber-net oneself through be penetrated into each corner in daily life comprehensively.In the past thatly only depend on serial communication and carry out the mode of data transmission and can not meet growing aerospace system application demand far away, distributed system has become the main application model of weapon and carrier rocket ground system gradually.Between thing followed multiprocessor, the reliability problem of transmission of data becomes ever more important.
At present for guaranteeing that the reliable communication of data between compartment system is mainly to adopt transmission control protocol (Transmission Control Protocol, or simple stream host-host protocol (Streaming Control Transmission Protocol, SCTP) TCP).As everyone knows, TCP and SCTP are the host-host protocols based on stream, are the agreements of a non-boundary, if they are applied in message based communication, just need border and the integrality of user's processing messages, will inevitably increase the expense of system and reduce the efficiency of communicating by letter.Another widely used agreement of transport layer---User Datagram Protoco (UDP) (User Datagram Protocol, UDP) be message based host-host protocol, can be used in message based communication, but because it is connectionless host-host protocol, so can not guarantee the transmitting of data between process.
Summary of the invention
The object of the invention is to overcome the defect of prior art, a kind of high reliability command system is provided.
In order to achieve the above object, technical scheme of the present invention is: a kind of high reliability command system, comprises instruction sending computer, instruction acquisition computing machine 1, instruction acquisition computing machine 2 and instruction response means; Wherein, instruction sending computer sends instruction to instruction acquisition computing machine 1 and instruction acquisition computing machine 2; Instruction acquisition computing machine 1 and instruction acquisition computing machine 2 redundancy backup each other, jointly receive the instruction that instruction sending computer sends, and send instruction to instruction response means, will return order simultaneously and send to instruction sending computer; Instruction response means is accepted the instruction that instruction acquisition computing machine 1 or instruction acquisition computing machine 2 send and is responded.
Described instruction sending computer sends instruction to instruction acquisition computing machine 1 and instruction acquisition computing machine 2, adopts three times data retransmission transmission mechanism, realizes in the following manner:
Transmit leg treatment scheme
Step 1, the process of transmitting that instruction sending computer sends the 1st instruction to instruction acquisition computing machine 1 and instruction acquisition computing machine 2 is as follows:
Step 1.1, when this instruction is transmitted for the first time, number of retransmissions is 0, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise again send present instruction to instruction acquisition computing machine, carry out the transmission for the second time of step 1.2;
Step 1.2, when this instruction is transmitted for the second time, number of retransmissions is 1, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise again send present instruction to instruction acquisition computing machine, the transmission for the third time described in carry out step 1.3;
Step 1.3, when this instruction is transmitted for the third time, number of retransmissions is 2, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise present instruction retransmits unsuccessfully for three times, check link;
Step 2, it is as follows that instruction sending computer sends the 1st process of transmitting that instruction is later to instruction acquisition computing machine l and instruction acquisition computing machine 2:
Step 2.1, instruction sending computer continues to send instruction to instruction acquisition computing machine l and instruction acquisition computing machine 2;
Step 2.2, measures at any time instruction sending computer and sends instructions to and receive that collecting computer 1, instruction acquisition computing machine 2 beam back back the time delay t of order to collecting computer 1, instruction acquisition computing machine 2, and determine average delay by average weighted mode
according to average delay
redefine response time T with number of retransmissions N,
wherein, N=0, l, 2;
Step 2.3, when this instruction is transmitted for the first time, number of retransmissions N is 0, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise again send present instruction to instruction acquisition computing machine, carry out the transmission for the second time of step 2.4;
Step 2.4, when this instruction is transmitted for the second time, number of retransmissions N is 1, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise again send present instruction to instruction acquisition computing machine, the transmission for the third time described in carry out step 1.3;
Step 2.5, when this instruction is transmitted for the third time, number of retransmissions N is 2, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise present instruction retransmits unsuccessfully for three times, check link;
Take over party's treatment scheme
Step 2.1, instruction acquisition computing machine is after instruction, and whether the director data that first judgement receives is effective, if invalid, abandons this director data bag, again waits for and receives instruction, if this director data is effective, carries out the judgement of step 2.2;
Step 2.2, whether the director data that determining step 2.1 is accepted attaches most importance to recurs the packet sending, if determine that the director data of receiving is not the packet that repeats transmission, sends it back order to instruction sending computer, and present instruction receives successfully; Otherwise abandon this director data bag, again wait for and receive instruction.
Described instruction acquisition computing machine 1 and instruction acquisition computing machine 2 redundancy backup each other, realize in the following manner:
Step 1, instruction sending computer sends instruction to instruction acquisition computing machine 1 and instruction acquisition computing machine 2 simultaneously,, if success sends instruction to two instruction acquisition computing machines, proceed to step 2; If only have an instruction acquisition computing machine successfully to receive instruction, proceed to step 3; If two instruction acquisition computing machines all successfully do not receive instruction, proceed to step 4;
Step 2, instruction acquisition computing machine 1 and instruction acquisition computing machine 2 send the instruction of receiving to instruction response means, and whether the instruction that first decision instruction collecting computer 1 transmits of instruction response means is effective, if effectively, instruction response means responds this instruction, this instruction process of transmitting success; Otherwise whether the instruction that decision instruction collecting computer 2 transmits is effective, if effectively, instruction response means responds this instruction, this instruction process of transmitting success, the failure of ELSE instruction process of transmitting;
Step 3, the instruction acquisition computing machine that successfully receives instruction in instruction acquisition computing machine 1 and instruction acquisition computing machine 2 sends the instruction of receiving to instruction response means, and first instruction response means judges that whether this instruction is effective; If effectively, instruction response means responds this instruction, this instruction process of transmitting success, the failure of ELSE instruction process of transmitting;
Step 4, instruction response means cannot receive the instruction from instruction acquisition computing machine, this instruction process of transmitting failure.
In described step 1, response time T is 300ms.
Beneficial effect of the present invention is: the present invention has increased reliable UDP agreement (Reliable UDP on the basis at UDP, RUDP), simultaneously on the basis of RUDP agreement, in order to guarantee in the give an order reliability of data transmission of network communication failure condition, adopt the mode of two command reception side's redundancy backups, jointly receive the instruction that instruction transmit leg sends, guaranteed validity and the promptness of instruction response means response instruction.
Accompanying drawing explanation
Fig. 1 is a kind of high reliability command system schematic.
Fig. 2 is three times data retransmission transmission mechanism schematic flow sheets that send the 1st instruction.
Fig. 3 is redundancy backup mechanism schematic flow sheet.
Fig. 4 sends the 1st instruction three times data retransmission transmission mechanism schematic flow sheets afterwards.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described further.
A kind of high reliability command system, as shown in Figure 1, comprises instruction sending computer, instruction acquisition computing machine 1, instruction acquisition computing machine 2 and instruction response means; Wherein, instruction sending computer sends instruction to instruction acquisition computing machine 1 and instruction acquisition computing machine 2; Instruction acquisition computing machine 1 and instruction acquisition computing machine 2 redundancy backup each other, jointly receive the instruction that instruction sending computer sends, and send instruction to instruction response means, will return order simultaneously and send to instruction sending computer; Instruction response means is accepted the instruction that instruction acquisition computing machine l or instruction acquisition computing machine 2 send and is responded.
Described instruction sending computer sends instruction to instruction acquisition computing machine 1 and instruction acquisition computing machine 2, adopts three times data retransmission transmission mechanism, realizes in the following manner:
Transmit leg treatment scheme
Step 1, the process of transmitting that instruction sending computer sends the 1st instruction to instruction acquisition computing machine l and instruction acquisition computing machine 2 as shown in Figure 2:
Step 1.1, when this instruction is transmitted for the first time, number of retransmissions is 0, if instruction sending computer receives time order that instruction acquisition computing machine returns within 300ms, instruction sends successfully, sends and finishes; Otherwise again send present instruction to instruction acquisition computing machine, carry out the transmission for the second time of step 1.2;
Step 1.2, when this instruction is transmitted for the second time, number of retransmissions is 1, if instruction sending computer receives time order that instruction acquisition computing machine returns within 300ms, instruction sends successfully, sends and finishes; Otherwise again send present instruction to instruction acquisition computing machine, the transmission for the third time described in carry out step 1.3;
Step 1.3, when this instruction is transmitted for the third time, number of retransmissions is 2, if instruction sending computer receives time order that instruction acquisition computing machine returns within 300ms, instruction sends successfully, sends and finishes; Otherwise present instruction retransmits unsuccessfully for three times, check link;
Step 2, instruction sending computer sends the 1st process of transmitting that instruction is later as shown in Figure 4 to instruction acquisition computing machine l and instruction acquisition computing machine 2:
Step 2.1, instruction sending computer continues to send instruction to instruction acquisition computing machine l and instruction acquisition computing machine 2;
Step 2.2, measures at any time instruction sending computer and sends instructions to and receive that collecting computer 1, instruction acquisition computing machine 2 beam back back the time delay t of order to collecting computer 1, instruction acquisition computing machine 2, and determine average delay by average weighted mode
according to average delay
redefine response time T with number of retransmissions N (N=0,1,2),
Step 2.3, when this instruction is transmitted for the first time, number of retransmissions is 0, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise again send present instruction to instruction acquisition computing machine, carry out the transmission for the second time of step 2.4;
Step 2.4, when this instruction is transmitted for the second time, number of retransmissions is 1, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise again send present instruction to instruction acquisition computing machine, the transmission for the third time described in carry out step 1.3;
Step 2.5, while transmission for the third time, number of retransmissions is 2, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise present instruction retransmits unsuccessfully for three times, check link;
Take over party's treatment scheme
Step 2.1, instruction acquisition computing machine is after instruction, and whether the director data that first judgement receives is effective, if invalid, abandons this director data bag, again waits for and receives instruction, if this director data is effective, carries out the judgement of step 2.2;
Step 2.2, whether the director data that determining step 2.1 is accepted attaches most importance to recurs the packet sending, if determine that the director data of receiving is not the packet that repeats transmission, sends it back order to instruction sending computer, and present instruction receives successfully; Otherwise abandon this director data bag, again wait for and receive instruction.
Described instruction acquisition computing machine 1 and instruction acquisition computing machine 2 redundancy backup each other, realize in the following manner:
Step 1, instruction sending computer sends instruction to instruction acquisition computing machine 1 and instruction acquisition computing machine 2 simultaneously, and instruction sends and adopts three times data retransmission transmission mechanisms, if success sends instruction to two instruction acquisition computing machines, proceeds to step 2; If only have an instruction acquisition computing machine successfully to receive instruction, proceed to step 3; If two instruction acquisition computing machines all successfully do not receive instruction, proceed to step 4;
Step 2, instruction acquisition computing machine 1 and instruction acquisition computing machine 2 send the instruction of receiving to instruction response means, whether the instruction that first decision instruction collecting computer 1 transmits of instruction response means is effective, decision procedure adopts prior art, if effectively, instruction response means responds this instruction, this instruction process of transmitting success; Otherwise whether the instruction that decision instruction collecting computer 2 transmits is effective, if effectively, instruction response means responds this instruction, this instruction process of transmitting success, the failure of ELSE instruction process of transmitting;
Step 3, the instruction acquisition computing machine that successfully receives instruction in instruction acquisition computing machine 1 and instruction acquisition computing machine 2 sends the instruction of receiving to instruction response means, and first instruction response means judges that whether this instruction is effective; If effectively, instruction response means responds this instruction, this instruction process of transmitting success, the failure of ELSE instruction process of transmitting;
Step 4, instruction response means cannot receive the instruction from instruction acquisition computing machine, this instruction process of transmitting failure.
Above to embodiments of the invention to being explained in detail, above-mentioned embodiment is only optimum embodiment of the present invention, but the present invention is not limited to above-described embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from aim of the present invention, make various variations.
Claims (4)
1. a high reliability command system, is characterized in that comprising instruction sending computer, instruction acquisition computing machine 1, instruction acquisition computing machine 2 and instruction response means; Wherein, instruction sending computer sends instruction to instruction acquisition computing machine 1 and instruction acquisition computing machine 2; Instruction acquisition computing machine 1 and instruction acquisition computing machine 2 redundancy backup each other, jointly receive the instruction that instruction sending computer sends, and send instruction to instruction response means, will return order simultaneously and send to instruction sending computer; Instruction response means is accepted the instruction that instruction acquisition computing machine 1 or instruction acquisition computing machine 2 send and is responded.
2. a kind of high reliability command system as claimed in claim 1, is characterized in that instruction sending computer sends out 2 to instruction acquisition computing machine 1 and instruction acquisition computing machine and go out instruction, adopts three times data retransmission transmission mechanism, realizes in the following manner:
Transmit leg treatment scheme
Step 1, the process of transmitting that instruction sending computer sends the 1st instruction to instruction acquisition computing machine 1 and instruction acquisition computing machine 2 is as follows:
Step 1.1, when this instruction is transmitted for the first time, number of retransmissions is 0, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise again send present instruction to instruction acquisition computing machine, carry out the transmission for the second time of step 1.2;
Step 1.2, when this instruction is transmitted for the second time, number of retransmissions is 1, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise again send present instruction to instruction acquisition computing machine, the transmission for the third time described in carry out step 1.3;
Step 1.3, when this instruction is transmitted for the third time, number of retransmissions is 2, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise present instruction retransmits unsuccessfully for three times, check link;
Step 2, it is as follows that instruction sending computer sends the 1st process of transmitting after instruction to instruction acquisition computing machine 1 and instruction acquisition computing machine 2:
Step 2.1, instruction sending computer continues to send instruction to instruction acquisition computing machine 1 and instruction acquisition computing machine 2;
Step 2.2, measures at any time instruction sending computer and sends instructions to and receive that collecting computer 1, instruction acquisition computing machine 2 beam back back the time delay t of order to collecting computer 1, instruction acquisition computing machine 2, and on average prolong with average weighted mode is definite
, according to average delay
redefine the response time with number of retransmissions N (N=0,1,2)
；
Step 2.3, when this instruction is transmitted for the first time, number of retransmissions is 0, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise again send present instruction to instruction acquisition computing machine, carry out the transmission for the second time of step 2.4;
Step 2.4, when this instruction is transmitted for the second time, number of retransmissions is 1, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise again send present instruction to instruction acquisition computing machine, the transmission for the third time described in carry out step 1.3;
Step 2.5, while transmission for the third time, number of retransmissions is 2, if instruction sending computer receives time order that instruction acquisition computing machine returns within response time T, instruction sends successfully, sends and finishes; Otherwise present instruction retransmits unsuccessfully for three times, check link;
Take over party's treatment scheme
Step 3.1, instruction acquisition computing machine is after instruction, and whether the director data that first judgement receives is effective, if invalid, abandons this director data bag, again waits for and receives instruction, if this director data is effective, carries out the judgement of step 2.2;
Step 3.2, whether the director data that determining step 3.1 is accepted attaches most importance to recurs the packet sending, if determine that the director data of receiving is not the packet that repeats transmission, sends it back order to instruction sending computer, and present instruction receives successfully; Otherwise abandon this director data bag, again wait for and receive instruction.
3. a kind of high reliability command system as claimed in claim 2, is characterized in that instruction acquisition computing machine 1 and instruction acquisition computing machine 2 redundancy backup each other, realizes in the following manner:
Step 1, instruction sending computer sends instruction to instruction acquisition computing machine 1 and instruction acquisition computing machine 2 simultaneously, if success sends instruction to two instruction acquisition computing machines, proceeds to step 2; If only have an instruction acquisition computing machine successfully to receive instruction, proceed to step 3; If two instruction acquisition computing machines all successfully do not receive instruction, proceed to step 4;
Step 2, instruction acquisition computing machine 1 and instruction acquisition computing machine 2 send the instruction of receiving to instruction response means, and whether the instruction that first decision instruction collecting computer 1 transmits of instruction response means is effective, if effectively, instruction response means responds this instruction, this instruction process of transmitting success; Otherwise whether the instruction that decision instruction collecting computer 2 transmits is effective, if effectively, instruction response means responds this instruction, this instruction process of transmitting success, the failure of ELSE instruction process of transmitting;
Step 3, the instruction acquisition computing machine that successfully receives instruction in instruction acquisition computing machine 1 and instruction acquisition computing machine 2 sends the instruction of receiving to instruction response means, and first instruction response means judges that whether this instruction is effective; If effectively, instruction response means responds this instruction, this instruction process of transmitting success, the failure of ELSE instruction process of transmitting;
Step 4, instruction response means cannot receive the instruction from instruction acquisition computing machine, this instruction process of transmitting failure.
4. a kind of high reliability command system as claimed in claim 1, is characterized in that the response time T in step 1 is 300ms.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107608812A (en) * | 2017-09-08 | 2018-01-19 | 北京奇艺世纪科技有限公司 | A kind of blowout method and server |
| CN110430097A (en) * | 2019-08-07 | 2019-11-08 | 聚好看科技股份有限公司 | Instruct transmission method, apparatus and system |
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| CN101086200A (en) * | 2007-07-13 | 2007-12-12 | 中国海洋石油总公司 | Drill platform power management system |
| CN101989067A (en) * | 2009-07-30 | 2011-03-23 | 中国商用飞机有限责任公司 | Flight environment simulation system |
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| US5797035A (en) * | 1993-12-10 | 1998-08-18 | Cray Research, Inc. | Networked multiprocessor system with global distributed memory and block transfer engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107608812A (en) * | 2017-09-08 | 2018-01-19 | 北京奇艺世纪科技有限公司 | A kind of blowout method and server |
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