CN106411514A - Communication control method for smart sewage treatment system - Google Patents
Communication control method for smart sewage treatment system Download PDFInfo
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- CN106411514A CN106411514A CN201611095809.2A CN201611095809A CN106411514A CN 106411514 A CN106411514 A CN 106411514A CN 201611095809 A CN201611095809 A CN 201611095809A CN 106411514 A CN106411514 A CN 106411514A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
- H04L63/126—Applying verification of the received information the source of the received data
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- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a communication control method for smart sewage treatment system. The swage treatment system comprises a control center, terminal equipment control hosts, sensor devices and monitoring devices. The method comprises the following steps including the one that the terminal equipment control hosts send the working state information to the control center at a preset time and at the same time, the terminal equipment control hosts send to the sensor devices or the monitoring devices encrypted interference avoiding commands. The sensor devices or the monitoring devices, according to the commands, return encrypted and scrambled data to the terminal equipment control hosts. The control method is used in a decentralized and unattended sewage treatment system to decompose the communication data sent and returned from the commands of the sensor devices and motoring devices in connection with the terminal equipment control hosts and then, performs bit encryption and data scrambling. In addition, the encryption operation number of each terminal equipment control host is random so as to effectively prevent people with ulterior motives from using lap lines to tamper with the normal operation data of the equipment.
Description
Technical field
The present invention relates to Control on Communication field, particularly a kind of communication control method of Intellectualized sewage water processing system.
Background technology
With the fast development of national urbanization, the quickening of the centralized residence process of Small Towns, and people's life
The increasingly raising of level, the discharge of sanitary sewage is increasing to river and ecological pollution.How pollution treatment has just become is compeled in eyebrow
The thing of eyelash.Small-sized decentralized wastewater processes and is born therefrom.
Current small-sized decentralized wastewater processing system is monitored to the running status of equipment itself and operational factor, and
Terminal device is to control centre's uploaded state information.But such device data and equipment state is that analog signal, numeral are bright
Code or done simple encryption and be transmitted, such transmission means is easily cracked by malicious person, and change equipment runs ginseng
Number or electronic attack make its equipment cannot normally run.
Content of the invention
Based on this, for the problems referred to above it is necessary to propose a kind of communication control method of Intellectualized sewage water processing system, should
Control method, in dispersion, unattended sewage disposal system, sets to each sensing being connected in terminal device control main frame
After the order transmission of standby and monitoring device and returned data communication are decomposed, bit encryption, data scrambling are processed, and every end
The cryptographic calculation number of end equipment control main frame is all random, thus effectively prevent malicious person using overlap joint line
Road, distorts the normal service data of equipment.
The technical scheme is that：A kind of communication control method of Intellectualized sewage water processing system, this sewage disposal system
System includes control centre, terminal device control main frame, sensing equipment and monitoring device, wherein, including " terminal device control main frame
By the presetting time to control centre send work state information " step, comprise the following steps simultaneously：
A, terminal device control main frame send encryption, the scrambling order number to be received such as to sensing equipment or monitoring device
According to, and enter step b；
B, sensing equipment or monitoring device receive encryption, scrambling order the resolve command being derived from terminal device control main frame
Enter step c afterwards；
C, sensing equipment or monitoring device judge whether the order receiving is to read data command, if it is, entering
Step d；If it is not, then normal work, wait terminal device control main frame to send order simultaneously, and return to step a；
D, sensing equipment or monitoring device press order request return encryption, scrambled data laggard to terminal device control main frame
Enter step e；
E, terminal device control main frame receive encryption from sensing equipment or monitoring device, scrambled data and parse data
Enter step f afterwards；
F, terminal device control main frame determine whether read data command required by sensing equipment or monitoring device return
The data returned, if it is, enter step g；If it is not, then entering step h；
G, terminal device control main frame read the data needing；
H, terminal device control main frame judge whether repeatedly not receiving correct returned data, if it is, send not returning
Return the sensing equipment of data or the fault message of monitoring device to control centre；If it is not, then continuing to data, and return to
Step a.
In dispersion, unattended sewage disposal system, each sensing being connected in terminal device control main frame is set
After the order transmission of standby and monitoring device and returned data communication are decomposed, bit encryption, data scrambling are processed, thus effectively
Avoid malicious person using overlap joint circuit, distort the normal service data of equipment.
Preferably, if it exceeds presetting time control center does not receive the work shape of terminal device control main frame transmission
State information, then control centre's prompt terminal equipment control main frame operation irregularity, and continue waiting for receiving terminal apparatus control main frame
The work state information sending.
Preferably, step a comprises the steps：
A1, by the data type data number of the address of sensing equipment or monitoring device, sensing equipment or monitoring device
Do data correctness and verify and generate original directive and check code, enter step a2；
A2, by original directive together with the check code in step a1 carry out bit encryption generate encryption order, take this encryption at random
A single byte in order, as cryptographic calculation number, this encryption order is generated a new group encryption life together with this cryptographic calculation number
Order, enters step a3；
A3, the not repeating random number taking clock millisecond respectively are scrambled code, are added between the new byte of encryption order, raw
Become encryption, scrambling order, enter step a4；
A4, correctness verification is carried out to encryption, scrambling order, form the new encryption of a frame, scrambling life together with this check code
Order sends to sensing equipment or monitoring device.
Terminal device control main frame sends encryption, the mode of scrambling order is wired or wireless.
The order that terminal device control main frame sends all carries out bit encryption and scrambling is processed, and every station terminal equipment controls
The cryptographic calculation number of main frame is all random, thus effectively prevent malicious person using overlap joint circuit, distorts equipment
Normal operation order.And order and employ random number scrambled transmission, thus improve the normal of operation of sewage disposal system
Property.
Preferably, step b comprises the steps：
Whether each frame encryption that b1, judgement receive, scrambling order are correct, if correctly, this frame ordering are kept in；
If incorrect, lose this frame ordering, and continue to order；After temporary correct order reaches three frames, enter step
Rapid b2；
B2, judge that three frames are correct and order in any two frame orderings scrambled code whether identical, if identical then it represents that should
Three frame orderings are invalid command, now should lose this three frame ordering, and continue to order；If it is not the same, then entering step
b3；
B3, order is filtered out scrambled code, be reduced to encryption order, enter step b4；
B4, taking-up cryptographic calculation number carry out computation decoder to encryption order；
B5, judge that decoded order is whether correct, if correctly, resolve command, enter step c；If incorrect,
Lose order, and continue to order.
Order employs random number scrambled transmission, and sensing equipment or monitoring device need to receive three diverse orders
Could parse becomes a frame and effectively orders, and can be prevented effectively from by the way of copy command, analyze and distort communications command.
Preferably, step d comprises the steps：
D1, according to order request take out data；
D2, by local device address, step d1 take out data and this data number composition whole group data, to whole group
Data carries out correctness and verifies and generate check code；
D3, by the whole group data in step d2 together with check code by cryptographic calculation number carry out after bit encryption generate encryption number
According to；
D4, encryption data added after scrambled code, generate encryption, scrambled data, generate after verifying again one group new plus
Close, scrambled data sends to terminal device control main frame.
The returned data of sensing equipment or monitoring device is logical all to carry out bit encryption and scrambling process, and every sensing equipment
Or the cryptographic calculation number of monitoring device is all to be obtained according to the order of terminal device control main frame, thus effectively prevent not
The people having motive, using overlap joint circuit, distorts the normal service data of equipment.And the returning of each sensing equipment or monitoring device
Return data and all employ random number scrambled transmission, thus improve the normality of operation of sewage disposal system, and Monitoring Data is true
Reality.
Preferably, step e comprises the steps:
Whether each group encryption that e1, judgement receive, scrambled data are correct, such as examine correct, then keep in this group data；As
Inspection is incorrect, then lose this group data, and continue to data；
After temporary correct data reaches three groups, enter step e2；
E2, judge whether the scrambled code of any two groups of data in three groups of correct data identical, if identical then it represents that should
Three groups of data are invalid data, now should lose this three groups of data, and continue to data；If it is not the same, then entering step
e3；
E3, data filtering is fallen scrambled code, be reduced to encryption data, enter step e4；
Cryptographic calculation number when e4, use transmission order is to decoding data；
E5, judge that decoded data is whether correct, if correctly, parse data, complete to receive, enter step f；As
Really incorrect, then lose data, and continue to data.
Data employs random number scrambled transmission, and terminal device control main frame needs to receive three groups of diverse data
Parsing can become one group of effective data, can be prevented effectively from by the way of copy data, analyze and distort communication data.
Preferably, in step h, terminal device control main frame sends after order to sensing equipment and monitoring device, if
Continuous five transmissions all do not receive sensing equipment or monitoring device returned data, and terminal device control main frame sends to control centre
Corresponding sensing equipment or monitoring device operation irregularity information.
If running into connection line and channel interference attack incessantly, this control and communication means have system exception
Warning function, abnormal alarm in control centre, precisely fixes a breakdown in scene of can sending someone.Thus improve sewage disposal
The normality of system operation, and Monitoring Data authenticity.
The invention has the beneficial effects as follows：
1st, in dispersion, unattended sewage disposal system, to each sensing equipment connecting on the terminal device and prison
After the order transmission of measurement equipment and returned data communication are decomposed, bit encryption, data scrambling are processed, and every station terminal equipment
The cryptographic calculation number of control main frame is all random, thus effectively prevent malicious person using overlap joint circuit, distorts
The normal service data of equipment；
2nd, data employs random number scrambled transmission, needs to receive three diverse orders or data just can be parsed into
Effectively order or data for one group, can be prevented effectively from by the way of copy data, analyze and distort communication data；
3rd, run into connection line and channel interference attack incessantly, this control and communication means have system exception
Warning function, abnormal alarm in control centre, precisely fixes a breakdown in scene of can sending someone.Thus improve sewage disposal system
The normality that system runs, and Monitoring Data authenticity.
Brief description
Fig. 1 is the flow chart that in the embodiment of the present invention, terminal device control main frame sends order and receiving data；
Fig. 2 is that in the embodiment of the present invention, sensing equipment or monitoring device receive order and the flow chart sending data；
Fig. 3 is that in the embodiment of the present invention, terminal device control main frame generates encryption, the flow chart of scrambling order；
Fig. 4 is the flow chart of sensing equipment or monitoring device decoding order in the embodiment of the present invention；
Fig. 5 is that in the embodiment of the present invention, sensing equipment or monitoring device generate encryption, the flow chart of scrambled data；
Fig. 6 is the flow chart of terminal device control main frame decoding data in the embodiment of the present invention；
Fig. 7 is the system structure diagram of sewage disposal system described in the embodiment of the present invention；
Reference：10- control centre, 20- terminal device control main frame, 30- sensing equipment, 40- monitoring device.
Specific embodiment
Below in conjunction with the accompanying drawings embodiments of the invention are described in detail.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of communication control method of Intellectualized sewage water processing system, this sewage disposal system includes
Control centre 10, terminal device control main frame 20, sensing equipment 30 and monitoring device 40, wherein, including " terminal device controls master
Machine 20 is pressed presetting time and is sent work state information to control centre 10 " step, comprise the following steps simultaneously：
It is waiting to sensing equipment 30 or monitoring device 40 etc. that a, terminal device control main frame 20 send encryption, scrambling order
Receive data, and enter step b；
B, sensing equipment 30 or monitoring device 40 receive and are derived from the encryption of terminal device control main frame 20, scramble and order and solve
Step c is entered after analysis order；
C, sensing equipment 30 or monitoring device 40 judge whether the order receiving is to read data command, if it is,
Enter step d；If it is not, then normal work, wait terminal device control main frame 20 to send order simultaneously, and return to step a；
D, sensing equipment 30 or monitoring device 40 are pressed order request and are returned encryption, scrambled data to terminal device control main frame
Step e is entered after 20；
E, terminal device control main frame 20 receive encryption from sensing equipment 30 or monitoring device 40, scrambled data and solve
Step f is entered after analysis data；
F, terminal device control main frame 20 determine whether read data command required by sensing equipment 30 or monitoring set
The data of standby 40 returns, if it is, enter step g；If it is not, then entering step h；
G, terminal device control main frame 20 read the data needing；
H, terminal device control main frame 20 judge whether repeatedly not receiving correct returned data, if it is, sending not
The fault message of the sensing equipment 30 of returned data or monitoring device 40 is to control centre；If it is not, then continuing to data,
And return to step a.
Embodiment 2
The present embodiment is on the basis of embodiment 1, if it exceeds presetting time control center 10 does not receive terminal and sets
The work state information that standby control main frame 20 sends, then control centre's 10 prompt terminal equipment control main frame 20 operation irregularity, and
Continue waiting for the work state information of receiving terminal apparatus control main frame 20 transmission.
Embodiment 3
As shown in figure 3, the present embodiment is on the basis of embodiment 1, step a comprises the steps：
A1, by the data type of the address of sensing equipment 30 or monitoring device 40, sensing equipment 30 or monitoring device 40 and
Data amount check does data correctness and verifies and generate original directive and check code, enters step a2；
A2, by original directive together with the check code in step a1 carry out bit encryption generate encryption order, take this encryption at random
A single byte in order, as cryptographic calculation number, this encryption order is generated a new group encryption life together with this cryptographic calculation number
Order, enters step a3；
A3, the not repeating random number taking clock millisecond respectively are scrambled code, are added between the new byte of encryption order, raw
Become encryption, scrambling order, enter step a4；
A4, correctness verification is carried out to encryption, scrambling order, form the new encryption of a frame, scrambling life together with this check code
Order sends to sensing equipment 30 or monitoring device 40.
Embodiment 4
As shown in figure 4, the present embodiment is on the basis of embodiment 1, step b comprises the steps：
Whether each frame ordering that b1, judgement receive is correct, if correctly, this frame ordering is kept in；If not just
Really, then lose this frame ordering, and continue to order；After temporary correct order reaches three frames, enter step b2；
B2, judge that three frames are correct and order in any two frame orderings scrambled code whether identical, if identical then it represents that should
Three frame orderings are invalid command, now should lose this three frame ordering, and continue to order；If it is not the same, then entering step
b3；
B3, order is filtered out scrambled code, be reduced to encryption order, enter step b4；
B4, taking-up cryptographic calculation number carry out computation decoder to encryption order；
B5, judge that decoded order is whether correct, if correctly, resolve command, enter step c；If incorrect,
Lose order, and continue to order.
Embodiment 5
As shown in figure 5, the present embodiment is on the basis of embodiment 1, step d comprises the steps：
D1, according to order request take out data；
D2, by local device address, step d1 take out data and this data number composition whole group data, to whole group
Data carries out correctness and verifies and generate check code；
D3, by the whole group data in step d2 together with check code by cryptographic calculation number carry out after bit encryption generate encryption number
According to；
D4, encryption data added after scrambled code, generate encryption, scrambled data, generate after verifying again one group new plus
Close, scrambled data sends to terminal device control main frame.
Embodiment 6
As shown in fig. 6, the present embodiment is on the basis of embodiment 1, step e comprises the steps:
Whether each group of data that e1, judgement receive be correct, such as examines correct, then keeps in this group data；It is as incorrect in examined,
Then lose this group data, and continue to data；
After temporary correct data reaches three groups, enter step e2；
E2, judge whether the scrambled code of any two groups of data in three groups of correct data identical, if identical then it represents that should
Three groups of data are invalid data, now should lose this three groups of data, and continue to data；If it is not the same, then entering step
e3；
E3, data filtering is fallen scrambled code, be reduced to encryption data, enter step e4；
Cryptographic calculation number when e4, use transmission order is to decoding data；
E5, judge that decoded data is whether correct, if correctly, parse data, complete to receive, enter step f；As
Really incorrect, then lose data, and continue to data.
Embodiment 7
, on the basis of embodiment 1, in step h, terminal device control main frame 20 is to sensing equipment 30 He for the present embodiment
After monitoring device 40 sends order, if continuous five transmissions all do not receive sensing equipment 30 or monitoring device 40 returned data,
Terminal device control main frame 20 sends corresponding sensing equipment 30 or monitoring device 40 operation irregularity information to control centre 10.
As shown in fig. 7, Fig. 7 is the system structure diagram of sewage disposal system described in the embodiment of the present invention.This sewage
Processing system includes control centre 10, terminal device control main frame 20, sensing equipment 30 and monitoring device 40；Described control centre
10 signal input output end connects the first signal input output end of terminal device control main frame 20, described sensing equipment 30
The signal input output end of signal input output end and monitoring device 40 secondary signal with terminal device control main frame 20 respectively
Input/output terminal connects.Control centre 10 remotely receives the encryption that each terminal device control main frame 20 sent, scrambling terminal sets
Standby status information, terminal device control main frame 20 encrypted with the sensing equipment being connected on the terminal device and monitoring device transmission,
Scrambling order, after command analysis are reduced by sensing equipment 30 and monitoring device 40, then terminal device control main frame 20 is ordered
The data needing sends data to control centre 10 after encryption, scrambling.Control centre 10 and terminal device control main frame
20 are connected by communication connects, such as GPRS, WIFI, LAN, terminal device control main frame 20 and sensing equipment 30
It is connected by wired or communication connection with monitoring device 40.
Embodiment described above only have expressed the specific embodiment of the present invention, and its description is more concrete and detailed, but simultaneously
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the guarantor of the present invention
Shield scope.
Claims (7)
1. a kind of communication control method of Intellectualized sewage water processing system, this sewage disposal system includes control centre, terminal sets
Standby control main frame, sensing equipment and monitoring device, wherein, including " terminal device control main frame presses the presetting time to control
The step of center transmission work state information " is it is characterised in that comprise the following steps simultaneously：
A, terminal device control main frame send encryption, scrambling order waits receiving data to sensing equipment or monitoring device, and
Enter step b；
B, sensing equipment or monitoring device receive and are derived from the encryption of terminal device control main frame, simultaneously resolve command is laggard for scrambling order
Enter step c；
C, sensing equipment or monitoring device judge whether the order receiving is to read data command, if it is, entering step
d；If it is not, then normal work, wait terminal device control main frame to send order simultaneously, and return to step a；
D, sensing equipment or monitoring device are pressed order request and are returned encryption, enter step after scrambled data to terminal device control main frame
Rapid e；
E, terminal device control main frame receive encryption from sensing equipment or monitoring device, scrambled data and to parse data laggard
Enter step f；
F, terminal device control main frame determine whether to read the sensing equipment or monitoring device return required by data command
Data, if it is, enter step g；If it is not, then entering step h；
G, terminal device control main frame read the data needing；
H, terminal device control main frame judge whether repeatedly not receiving correct returned data, if it is, send not returning number
According to sensing equipment or monitoring device fault message to control centre；If it is not, then continuing to data, and return to step
a.
If a kind of Intellectualized sewage water processing system according to claim 1 communication control method it is characterised in that
Exceed the work state information that presetting time control center does not receive the transmission of terminal device control main frame, then control centre carries
Show terminal device control main frame operation irregularity, and continue waiting for the work state information of receiving terminal apparatus control main frame transmission.
3. a kind of communication control method of Intellectualized sewage water processing system according to claim 1 is it is characterised in that step
A comprises the steps：
A1, the data type data number of the address of sensing equipment or monitoring device, sensing equipment or monitoring device is done number
Verify and generate original directive and check code according to correctness, enter step a2；
A2, by original directive together with the check code in step a1 carry out bit encryption generate encryption order, take this encryption order at random
In a single byte as cryptographic calculation number, this encryption order is generated a new group encryption order together with this cryptographic calculation number,
Enter step a3；
A3, the not repeating random number taking clock millisecond respectively are scrambled code, are added between the new byte of encryption order, generate plus
Close, scrambling order, enters step a4；
A4, correctness verification is carried out to encryption, scrambling order, form the new encryption of a frame together with this check code, scrambling order is sent out
Deliver to sensing equipment or monitoring device.
4. a kind of communication control method of Intellectualized sewage water processing system according to claim 1 is it is characterised in that step
B comprises the steps：
Whether each frame encryption that b1, judgement receive, scrambling order are correct, if correctly, this frame ordering are kept in；If
Incorrect, then lose this frame ordering, and continue to order；After temporary correct order reaches three frames, enter step b2；
B2, judge that three frames are correct and order in any two frame orderings scrambled code whether identical, if identical then it represents that this three frame
Order as invalid command, now should lose this three frame ordering, and continue to order；If it is not the same, then entering step b3；
B3, order is filtered out scrambled code, be reduced to encryption order, enter step b4；
B4, taking-up cryptographic calculation number carry out computation decoder to encryption order；
B5, judge that decoded order is whether correct, if correctly, resolve command, enter step c；If incorrect, lose
Order, and continue to order.
5. a kind of communication control method of Intellectualized sewage water processing system according to claim 1 is it is characterised in that step
D comprises the steps：
D1, according to order request take out data；
D2, by local device address, step d1 take out data and this data number composition whole group data, to whole group data
Carry out correctness to verify and generate check code；
D3, by the whole group data in step d2 together with check code by cryptographic calculation number carry out after bit encryption generate encryption data；
D4, by encryption data add scrambled code after generate encryption, scrambled data, again verify after generate one group of new encryption, plus
Disturb data is activation to terminal device control main frame.
6. a kind of communication control method of Intellectualized sewage water processing system according to claim 1 is it is characterised in that step
E comprises the steps:
Whether each group encryption that e1, judgement receive, scrambled data are correct, such as examine correct, then keep in this group data；As inspection not
Correctly, then lose this group data, and continue to data；
After temporary correct data reaches three groups, enter step e2；
E2, judge whether the scrambled code of any two groups of data in three groups of correct data identical, if identical then it represents that this three groups
Data is invalid data, now should lose this three groups of data, and continue to data；If it is not the same, then entering step e3；
E3, data filtering is fallen scrambled code, be reduced to encryption data, enter step e4；
Cryptographic calculation number when e4, use transmission order is to decoding data；
E5, judge that decoded data is whether correct, if correctly, parse data, complete to receive, enter step f；If no
Correctly, then lose data, and continue to data.
7. a kind of communication control method of Intellectualized sewage water processing system according to claim 1 is it is characterised in that in step
In rapid h, terminal device control main frame sends after order to sensing equipment and monitoring device, if continuous five transmissions all do not receive
Sensing equipment or monitoring device returned data, terminal device control main frame sends corresponding sensing equipment to control centre or monitoring sets
Standby operation irregularity information.
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| CN101734265A (en) * | 2009-12-23 | 2010-06-16 | 卡斯柯信号有限公司 | Method and device for monitoring state of embedded vehicle-mounted signal device |
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| CN105573947A (en) * | 2014-10-13 | 2016-05-11 | 北京自动化控制设备研究所 | APB (Advanced Peripheral Bus) based SD/MMC (Secure Digital/ MultiMedia Card) control method |
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| CN204833409U (en) * | 2015-08-07 | 2015-12-02 | 牟建仕 | Ammeter case intelligence lock based on NFC and wireless network |
| CN105279932A (en) * | 2015-11-07 | 2016-01-27 | 常州大学 | Centralized monitoring internet of things platform for operation conditions of village sewage treatment facilities |
| CN105871923A (en) * | 2016-06-15 | 2016-08-17 | 腾讯科技（深圳）有限公司 | Information processing method, information recording nodes and participation nodes |
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