CN109672504A - Data transmission method, apparatus and system - Google Patents
Data transmission method, apparatus and system Download PDFInfo
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- CN109672504A CN109672504A CN201910153393.2A CN201910153393A CN109672504A CN 109672504 A CN109672504 A CN 109672504A CN 201910153393 A CN201910153393 A CN 201910153393A CN 109672504 A CN109672504 A CN 109672504A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0014—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the source coding
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Abstract
The invention discloses a kind of data transmission methods, apparatus and system.Wherein, this method comprises: obtaining collected the first data for being used to indicate switch state of input/output module in programmed logic controller PLC system, wherein the first data are a bit；By the first data encoding be each be the multidigit binary number of the first data.The present invention solves the technical problem of data transmission inaccuracy in the related technology.
Description
Technical field
The present invention relates to field of data transmission, in particular to a kind of data transmission method, apparatus and system.
Background technique
In the related technology, after detecting switch state, number 0 or number 1 are usually used to indicate the shape of switch
State, then by transmission number 0 or number 1 come the state of transmitting switch.
If however, using the above method, since error of transmission may occur in data transmission procedure, if only
Only transmission digital 0 or digital 1 is inaccurate to indicate the state switched, easy data transmission result.
For above-mentioned problem, currently no effective solution has been proposed.
Summary of the invention
The embodiment of the invention provides a kind of data transmission methods, apparatus and system, at least to solve to count in the related technology
According to the technical problem of transmission inaccuracy.
According to an aspect of an embodiment of the present invention, a kind of data transmission method is provided, comprising: obtain programmed logic control
Input/output module is collected for indicating the first data of switch state in device PLC system processed, wherein above-mentioned first data
For a bit；By above-mentioned first data encoding be each be the multidigit binary number of above-mentioned first data.
According to another aspect of an embodiment of the present invention, a kind of data transmission device is additionally provided, comprising: receiver, with volume
Input/output module connects in journey logic controller PLC system, collected for table for obtaining above-mentioned input/output module
Show the first data of switch state, wherein above-mentioned first data are a bit；Encoder, and for by above-mentioned first
Data encoding is that each is the multidigit binary number of above-mentioned first data.
Another aspect according to an embodiment of the present invention, additionally provides a kind of data transmission system, comprising: receiver, with volume
Input/output module connects in journey logic controller PLC system, collected for table for obtaining above-mentioned input/output module
Show the first data of switch state, wherein above-mentioned first data are a bit；Encoder, for being counted above-mentioned first
According to being encoded to the multidigit binary number that each is above-mentioned first data；Controller, for above-mentioned after receiving coding
After first data, whether above-mentioned first data after detection coding be can be used；Decoder, for above-mentioned first data in encoded
In available situation, above-mentioned first data after above-mentioned coding are decoded, above-mentioned first data are obtained.
In embodiments of the present invention, it is collected using input/output module in acquisition programmed logic controller PLC system
For indicating the first data of switch state, wherein above-mentioned first data are a bit；Above-mentioned first data are compiled
Code is the method for the multidigit binary number of above-mentioned first data for each.In the above-mentioned methods, due to receiving input
After first data of the collected switch state of output module, be not above-mentioned first data are transmitted according to the prior art, but
First by the first data encoding, it is encoded to the multidigit binary number that each is above-mentioned first data, thus when transmitting data,
It ensure that the accuracy of data.And then solves the technical problem of data transmission inaccuracy in the related technology.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of flow diagram of optional data transmission method according to an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of optional data transmission device according to an embodiment of the present invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
According to an aspect of an embodiment of the present invention, a kind of data transmission method is provided, optionally, as a kind of optional
Embodiment, as shown in Figure 1, above-mentioned data transmission method includes:
It is collected for indicating switch state to obtain input/output module in programmed logic controller PLC system by S102
The first data, wherein first data be a bit；
It is the multidigit binary number of first data that first data encoding is each by S104.
Optionally, above-mentioned data transmission method can be applied in programmed logic controller PLC system.For example, working as PLC system
In input/output module collect the switch data for indicating switch state after, be not directly to send out above-mentioned switch data
Controller is given, but above-mentioned switch data is encoded.Above-mentioned switch data is a bit, is 0 or 1,
During to above-mentioned switch data coding, if being encoded to 3 bits, then it is encoded to 000 by 0, is encoded to 111 for 1.
If above-mentioned switch data is encoded to 4 bits, then it is encoded to 0000 by 0, is encoded to 1111 for 1.And so on.
It should be noted that a kind of preferred embodiment will be opened during encoding to above-mentioned switch data
It closes data and dibit is encoded to by a bit, i.e., be encoded to 00 for 0, be encoded to 11 for 1.
By the above method, by getting programmed logic controller PLC system input/output module it is collected
After the first data for indicating switch state, wherein above-mentioned first data are a bit；Above-mentioned first data are compiled
Code is the multidigit binary number of above-mentioned first data for each, when so as to avoid transmission data, since data are transmitted across
Journey it is disturbed and caused by transmit the problem of data inaccuracy, ensure that when transmitting data, the accuracy of data.
As a kind of optional embodiment, it is described by first data encoding be each be first data
Multidigit binary number include:
It is the dibit of first data that first data encoding is each by S1.
Optionally, after being encoded to the first data, for example, being encoded to 00 for 0,11 is encoded to by 1, is then being transmitted
When data, transmitting 00 and 11 can effectively avoid the interference in data transmission procedure.When recipient receives transmitted number
According to rear, if detecting that data are 00 or 11, then decoding data, obtains the first data, and then obtain switch state.If by
In the interference of signal, the signal that recipient receives is 01 or 10, then illustrates during transmitting the first data, signal occurs
Interference then abandons 10 or 01, is not decoded to it.
In specific cataloged procedure, the digit of the first data encoding excessively can then be increased to the burden of decoding side.By
First data encoding is the accuracy that dibit can greatly improve data transmitting by test, while can't be to decoding
The biggish burden of Fang Zaocheng.
Through this embodiment, by being dibit by the first data encoding, thus ensure that data transmitting
While accuracy, decoded burden is reduced, improves the efficiency of data transmitting.
As a kind of optional embodiment,
When first data are 0, first data indicate that the switch state is abnormal or disconnects；
When first data are 1, first data indicate that the switch state is normal or closure.
Optionally, the first data in this programme indicate the normal or abnormal of switch state, are opened or closed only a kind of
Example, specifically, the first data in this programme also may indicate that the normal or abnormal etc. of equipment.
It should be noted that for the various method embodiments described above, for simple description, therefore, it is stated as a series of
Combination of actions, but those skilled in the art should understand that, the present invention is not limited by the sequence of acts described because
According to the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know
It knows, the embodiments described in the specification are all preferred embodiments, and related actions and modules is not necessarily of the invention
It is necessary.
Above-mentioned data transmission method is illustrated with following embodiments, the first data (switch data) are encoded to two
Binary number.
Input/output module collection site facility switching data, close the switch, and acquisition switch data is " 1 ", and switch disconnects,
Acquiring switch data is " 0 "；The state of switch is indicated using 1 bit, as shown in table 1:
Table 1
| Switch state | Acquire data |
| ON | 1 |
| OFF | 0 |
After acquisition, data are encoded, the state of switch indicates that cryptoprinciple is as shown in table 2 using 2 bit:
Table 2
| Switch state | Acquire data | Coded data |
| ON | 1 | 11 |
| OFF | 0 | 00 |
From table 2 it can be seen that the Hamming distance of data is 1 before encoding, the Hamming distance of coded data is 2, increases transmission
The Hamming distance of data.
Input/output module can acquire the signal of 8 scene switches simultaneously, indicated, adopted using 1 byte before uncoded
The data of switch 1 are indicated with byte LSB, byte MSB indicates the data of switch 8, then the data before coding are 00101101, such as
Shown in table 3:
Table 3
| Switch serial number | Switch state | Acquire data |
| 1 | ON | 1 |
| 2 | OFF | 0 |
| 3 | ON | 1 |
| 4 | ON | 1 |
| 5 | OFF | 0 |
| 6 | ON | 1 |
| 7 | OFF | 0 |
| 8 | OFF | 0 |
Acquisition terminates after obtaining switch state, and the data switched to 8 are encoded according to the cryptoprinciple in table 2, compiles
Data after code indicate that LSB~MSB of byte1 indicates the data of 1~switch of switch 4 with this, byte2's using 2 byte
LSB~MSB successively indicates the data of 5~switch of switch 8, i.e. byte1:11110011, byte2:00001100, as shown in table 4:
Table 4
| Switch serial number | Switch state | Acquire data | Coded data |
| 1 | ON | 1 | 11 |
| 2 | OFF | 0 | 00 |
| 3 | ON | 1 | 11 |
| 4 | ON | 1 | 11 |
| 5 | OFF | 0 | 00 |
| 6 | ON | 1 | 11 |
| 7 | OFF | 0 | 00 |
| 8 | OFF | 0 | 00 |
After end-of-encode, 2 byte data are sent to controller module by communication bus by input/output module.Control
Device checks that data, steps are as follows:
If the data of some switch are 00, switch is disconnection and data are available；
If the data of some switch are 11, switch is closure and data are available；
If the data of some switch are 01, defeated evidence is disturbed, and mistake occurs, and does not use this data；
If the data of some switch are 10；Then defeated evidence is disturbed, and mistake occurs, and does not use this data.
With this Hamming distance by increasing data, the detection to the mistake in data transmission procedure is realized.
Other side according to an embodiment of the present invention additionally provides a kind of for implementing the number of above-mentioned data transmission method
According to transmitting device.As shown in Fig. 2, the device includes:
(1) receiver 202 are connect with input/output module in programmed logic controller PLC system, described defeated for obtaining
It is collected for indicating the first data of switch state to enter output module, wherein first data are a bit；
(2) encoder 204, with for by first data encoding be each be the multidigit two of first data
System number.
Optionally, above-mentioned data transmission device can be applied in programmed logic controller PLC system.
It should be noted that above-mentioned apparatus may be mounted in some unit module in PLC system, such as input and output mould
It in block, or realizes as an individual unit module, it is not limited here.
For example, after the input/output module in PLC system collects the switch data for indicating switch state, not
It is above-mentioned switch data to be directly sent to controller, but encode to above-mentioned switch data.Above-mentioned switch data is one
Bit is 0 or 1, during encoding to above-mentioned switch data, if being encoded to 3 bits, then by 0
It is encoded to 000, is encoded to 111 for 1.If above-mentioned switch data is encoded to 4 bits, then it is encoded to 0000 by 0, it will
1 is encoded to 1111.And so on.
It should be noted that a kind of preferred embodiment will be opened during encoding to above-mentioned switch data
It closes data and dibit is encoded to by a bit, i.e., be encoded to 00 for 0, be encoded to 11 for 1.
By the above method, by getting programmed logic controller PLC system input/output module it is collected
After the first data for indicating switch state, wherein above-mentioned first data are a bit；Above-mentioned first data are compiled
Code is the multidigit binary number of above-mentioned first data for each, when so as to avoid transmission data, since data are transmitted across
Journey it is disturbed and caused by transmit the problem of data inaccuracy, ensure that when transmitting data, the accuracy of data.
As a kind of optional embodiment, above-mentioned encoder includes:
(1) first sub-encoders are two of first data for being each by first data encoding
Binary number.
Optionally, after being encoded to the first data, for example, being encoded to 00 for 0,11 is encoded to by 1, is then being transmitted
When data, transmitting 00 and 11 can effectively avoid the interference in data transmission procedure.When recipient receives transmitted number
According to rear, if detecting that data are 00 or 11, then decoding data, obtains the first data, and then obtain switch state.If by
In the interference of signal, the signal that recipient receives is 01 or 10, then illustrates during transmitting the first data, signal occurs
Interference then abandons 10 or 01, is not decoded to it.
In specific cataloged procedure, the digit of the first data encoding excessively can then be increased to the burden of decoding side.By
First data encoding is the accuracy that dibit can greatly improve data transmitting by test, while can't be to decoding
The biggish burden of Fang Zaocheng.
Through this embodiment, by being dibit by the first data encoding, thus ensure that data transmitting
While accuracy, decoded burden is reduced, improves the efficiency of data transmitting.
Another aspect according to an embodiment of the present invention additionally provides a kind of for implementing the number of above-mentioned data transmission method
According to Transmission system.The system includes:
(1) receiver is connect, for obtaining the input with input/output module in programmed logic controller PLC system
Output module is collected for indicating the first data of switch state, wherein first data are a bit；
(2) encoder is the multidigit binary system of first data for being each by first data encoding
Number；
(3) controller, for first data after receiving first data after coding, after detection coding
Whether can be used；
(4) decoder, in the available situation of the first data in encoded, to described after the coding
One data are decoded, and obtain first data.
Optionally, above-mentioned receiver and encoder can be, but not limited to be mounted in above-mentioned input/output module, Huo Zheyu
Above-mentioned input/output module is connected, and above controller and decoder can be, but not limited to be mounted on the module list for receiving the first data
In member, or it is connect with the modular unit for receiving the first data as an individual modular unit.
For example, being received after the input/output module in PLC system collects the switch data for indicating switch state
Device obtains above-mentioned switch data, and is encoded by encoder to above-mentioned switch data.Above-mentioned switch data is a binary system
Number is 0 or 1, during encoding to above-mentioned switch data, if being encoded to 3 bits, is then encoded to 0
000,111 are encoded to by 1.If above-mentioned switch data is encoded to 4 bits, then it is encoded to 0000 by 0, by 1 coding
It is 1111.And so on.
It should be noted that a kind of preferred embodiment will be opened during encoding to above-mentioned switch data
It closes data and dibit is encoded to by a bit, i.e., be encoded to 00 for 0, be encoded to 11 for 1.Then, it is controlling
After device receives the switch data after above-mentioned coding, if detect the switch data after coding each be 0 or each
It is 1, then the data after confirming above-mentioned coding are effective, the data after above-mentioned coding are sent to decoder, by decoder to it
It is decoded, otherwise, the data invalid after confirming above-mentioned coding, processor directly discards the data after above-mentioned coding.
By above system, by getting programmed logic controller PLC system input/output module it is collected
After the first data for indicating switch state, wherein above-mentioned first data are a bit；Above-mentioned first data are compiled
The case where code is the multidigit binary number of above-mentioned first data for each, and then first data in encoded can be used
Under, first data after the coding are decoded, first data are obtained, when so as to avoid transmission data,
As data transmission procedure it is disturbed and caused by transmit the problem of data inaccuracy, ensure that when transmitting data, the standard of data
True property.
As a kind of optional embodiment, above-mentioned encoder further include:
(1) first sub-encoders are two of first data for being each by first data encoding
Binary number.
For example, it is encoded to 00 by 0 when getting switch data is 0, and then when transmitting data, transmitting above-mentioned 00, so
Afterwards when processor receives data, if receiving 00, then data are decoded, obtain 0, indicates switch disconnection or event
Barrier, if receiving 01 or 10, then it represents that the process for transmitting data is interfered, and data 01 or 10 are abandoned.
Through this embodiment, by being dibit by the first data encoding, thus ensure that data transmitting
While accuracy, decoded burden is reduced, improves the efficiency of data transmitting.
As a kind of optional embodiment, above controller includes:
(1) first sub-processor, for determining when detecting that each bit digital of the first data after coding is identical
First data after the coding are available, otherwise, it determines first data after the coding are unavailable.
Through this embodiment, by determining whether each bit digital of the first data is identical, and then the first data are determined whether
It can use, to ensure that the accuracy of the first data, improve the accuracy of data transmitting.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
If the integrated unit in above-described embodiment is realized in the form of SFU software functional unit and as independent product
When selling or using, it can store in above-mentioned computer-readable storage medium.Based on this understanding, skill of the invention
Substantially all or part of the part that contributes to existing technology or the technical solution can be with soft in other words for art scheme
The form of part product embodies, which is stored in a storage medium, including some instructions are used so that one
Platform or multiple stage computers equipment (can be personal computer, server or network equipment etc.) execute each embodiment institute of the present invention
State all or part of the steps of method.
In the above embodiment of the invention, it all emphasizes particularly on different fields to the description of each embodiment, does not have in some embodiment
The part of detailed description, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed client, it can be by others side
Formula is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, and only one
Kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
It is desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or discussed it is mutual it
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of unit or module
It connects, can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of data transmission method characterized by comprising
Obtain collected the first number for indicating switch state of input/output module in programmed logic controller PLC system
According to, wherein first data are a bit；
By first data encoding be each be the multidigit binary number of first data.
2. by first data encoding being institute for each the method according to claim 1, wherein described
The multidigit binary number for stating the first data includes:
By first data encoding be each be the dibit of first data.
3. method described in -2 any one according to claim 1, which is characterized in that
When first data are 0, first data indicate that the switch state is abnormal or disconnects；
When first data are 1, first data indicate that the switch state is normal or closure.
4. a kind of data transmission device, which is characterized in that including
Receiver is connect, for obtaining the input/output module with input/output module in programmed logic controller PLC system
Collected the first data for being used to indicate switch state, wherein first data are a bit；
Encoder, with for by first data encoding be each be the multidigit binary number of first data.
5. device according to claim 4, which is characterized in that the encoder includes:
First sub-encoders are two binary systems of first data for being each by first data encoding
Number.
6. a kind of data transmission system characterized by comprising
Receiver is connect, for obtaining the input/output module with input/output module in programmed logic controller PLC system
Collected the first data for being used to indicate switch state, wherein first data are a bit；
Encoder is the multidigit binary number of first data for being each by first data encoding；
Controller, for after receiving first data after coding, whether first data after detection coding may be used
With；
Decoder, in the available situation of the first data in encoded, to first data after the coding
It is decoded, obtains first data.
7. system according to claim 6, which is characterized in that the encoder further include:
First sub-encoders are two binary systems of first data for being each by first data encoding
Number.
8. system according to claim 6, which is characterized in that the controller includes:
First sub-processor, for determining the volume when detecting that each bit digital of the first data after coding is identical
First data after code are available, otherwise, it determines first data after the coding are unavailable.
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| CN201910153393.2A CN109672504A (en) | 2019-02-28 | 2019-02-28 | Data transmission method, apparatus and system |
| CN201910392333.6A CN110113135A (en) | 2019-02-28 | 2019-05-13 | Data transmission method, apparatus and system |
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| CN201910153393.2A CN109672504A (en) | 2019-02-28 | 2019-02-28 | Data transmission method, apparatus and system |
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| CN201910392333.6A Withdrawn CN110113135A (en) | 2019-02-28 | 2019-05-13 | Data transmission method, apparatus and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5563664A (en) * | 1994-01-05 | 1996-10-08 | Samsung Electronics Co., Ltd. | Pre-frame-comb as well as pre-line-comb partial-response filtering of BPSK buried in a TV signal |
| CN103698657B (en) * | 2013-12-19 | 2016-02-24 | 湖南大学 | Distribution network failure based on information completion and correction locates fault-tolerance approach |
| CN104375496B (en) * | 2014-12-08 | 2018-01-05 | 中国石油天然气集团公司 | Dcs and its control method |
| US9781795B1 (en) * | 2016-05-27 | 2017-10-03 | Pin-Chih Lin | Light fixture providing multiple switchable brightness levels |
| CN109194447B (en) * | 2018-09-26 | 2021-08-10 | 深圳市太赫兹科技创新研究院 | Terahertz wave modulation method and wireless communication system |
| CN209358555U (en) * | 2019-02-28 | 2019-09-06 | 北京龙鼎源科技股份有限公司 | Data transmission device and system |
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2019
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