CN107276739A - Data transmission method and device - Google Patents
Data transmission method and device Download PDFInfo
- Publication number
- CN107276739A CN107276739A CN201610211048.6A CN201610211048A CN107276739A CN 107276739 A CN107276739 A CN 107276739A CN 201610211048 A CN201610211048 A CN 201610211048A CN 107276739 A CN107276739 A CN 107276739A
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- China
- Prior art keywords
- data
- clock information
- sent
- downhole system
- ground
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Communication Control (AREA)
Abstract
The present invention relates to a kind of data transmission method and device, methods described includes:Downhole system receives the first data that ground is sent by first passage, and first data include clock information；First data are handled, the clock information is extracted；Second data are sent to the ground by second channel, second data include the clock information, improve message transmission rate during well logging, realize the synchronization at data transmit-receive end.
Description
Technical field
The present invention relates to the data transmission method in field of data transmission, more particularly to wire cable and device.
Background technology
In petroleum industry, the data transfer of wire cable is extremely important, well logging in wireline logging system
It is general in system to use 5 kms to the armored cable of 7 kms or so, the bandwidth available of such a cable
It is limited, to realize that the data transfer of high-speed has to realize efficient digital modulation mode.
There are the slow data transmission using Manchester coding technique, its upstream rate in current logging system
It is all very low with downstream rate, no more than 100Kbits/s；Using quadrature amplitude modulation (QAM,
Quadrature Amplitude Modulation) or QPSK (QPSK, Quadrature Phase
Shift Keyin) modulation technique when, it is 500Kbit/s or so that it, which uploads velocity of variation,.Currently, using just
Hand over frequency multiplexing technique (OFDM, Orthogonal Frequency Division Multiplexing)
When, its transmission rate is in 1Mbit/s or so.
It is low that data above transmission method has speed, the problem of system sending and receiving end can not be synchronous.
The content of the invention
Present invention aim to address the message transmission rate of wire cable in logging system is low and sending and receiving end not
Can be synchronous the problem of.
To achieve the above object, in a first aspect, the embodiments of the invention provide a kind of data transmission method,
Methods described includes：
Downhole system receives the first data that ground is sent by first passage, when first data include
Clock information；
The downhole system is handled first data, extracts the clock information；
Second data are sent to the ground, second data by the downhole system by second channel
Including the clock information.
With reference in a first aspect, in the first possible implementation of first aspect, the downhole system
First data are handled, the clock information is extracted and specifically includes:
The downhole system carries out graceful code advance signal to first data and received and signal condition, graceful code
Synchronizing signal is extracted, graceful code demodulation, extracts the clock information.
With reference in a first aspect, in second of possible implementation of first aspect, the downhole system
Second data are sent to the ground by second channel, second data include the clock information
Also include before：
The downhole system is interleaved to the second information and the clock information, forward error correction coding, star
Seat mapping orthogonality Modulation and Amplitude Modulation coding, inverse fast Fourier transform after digital-to-analogue conversion, generates the second data.
In second aspect, the embodiments of the invention provide a kind of data transmission method, methods described includes:
First data are sent to downhole system by ground by first passage, and first data include clock
Information；
The second data that downhole system described in the ground receiver is sent by second channel, second number
According to including the clock information.
With reference to second aspect, in the first possible implementation of second aspect, the ground is by
One data are sent to downhole system by first passage, and first data include including before clock information:
Carry out graceful code module clock in face of the first information and clock information describedly to produce with correcting, graceful code is compiled
Code, generates the first data.
In the third aspect, the embodiments of the invention provide a kind of data transmission device, described device includes:The
One receiving unit, extraction unit, the first transmitting element；
First receiving unit, it is described for receiving the first data that ground is sent by first passage
First data include clock information；
The extraction unit, for handling first data, extracts the clock information；
First transmitting element, for the second data to be sent into the ground, institute by second channel
Stating the second data includes the clock information.
With reference to the third aspect, in the first possible implementation of the third aspect, the extraction unit
Specifically for,
Graceful code advance signal is carried out to first data to receive and signal condition, graceful code synchronizing signal is extracted,
Graceful code demodulation, extracts the clock information.
With reference to the third aspect, in second of possible implementation of the third aspect, described device is also wrapped
Include：First processing units；
The first processing units specifically for, the second information and the clock information are interleaved, it is preceding
To Error Correction of Coding, constellation mapping quadrature amplitude modulation is encoded, inverse fast Fourier transform, after digital-to-analogue conversion,
Generate the second data.
In fourth aspect, the embodiments of the invention provide a kind of data transmission device, described device includes：
Second transmitting element, the second receiving unit；
Second transmitting element, for the first data to be sent into downhole system by first passage, institute
Stating the first data includes clock information；
Second receiving unit, for receiving the second number that the downhole system is sent by second channel
According to second data include the clock information.
With reference to fourth aspect, in the first possible implementation of fourth aspect, described device is also wrapped
Include:Second processing unit；
The second processing unit to the first information and clock information specifically for carrying out graceful code module clock
Produce and generate the first data with correction, graceful code coding.
In the present invention, downhole system receives the first data that ground is sent, described first by first passage
Data include clock information；First data are handled, the clock information is extracted；By second
Data are sent to the ground by second channel, and second data include the clock information, improve
Message transmission rate during well logging, realizes the synchronization at data transmit-receive end.
Brief description of the drawings
Fig. 1 is the data transmission method flow chart that the embodiment of the present invention one is provided；
Fig. 2 is downhole system data transfer schematic diagram provided in an embodiment of the present invention；
Fig. 3 is terrestrial data transmission schematic diagram provided in an embodiment of the present invention；
Fig. 4 is the data transmission method flow chart that the embodiment of the present invention two is provided；
Fig. 5 is the data transmission device schematic diagram that the embodiment of the present invention three is provided；
Fig. 6 is the data transmission device schematic diagram that the embodiment of the present invention four is provided.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing to this
Invention is described in further detail, it is clear that described embodiment is only a part of implementation of the invention
Example, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art exist
The all other embodiment obtained under the premise of creative work is not made, belongs to what the present invention was protected
Scope.
Below by drawings and examples, the technical method of the present invention is described in further detail.
Fig. 1 is the data transmission method flow chart that the embodiment of the present invention one is provided.The implementation master of the present embodiment
Body is downhole system, and ground can be desktop computer, the system that notebook etc. has transmission-receiving function.Such as Fig. 1
Shown, the present embodiment comprises the following steps：
S110, downhole system receives the first data that ground is sent, first data by first passage
Including clock information.
Fig. 2 is downhole system data transfer schematic diagram provided in an embodiment of the present invention, and Fig. 3 is real for the present invention
The terrestrial data transmission schematic diagram of example offer is provided.Fig. 1 is done further according to Fig. 2 and Fig. 3 below
It is bright.
Wherein, ground can be between downhole system by cable connection, during first passage can be cable
Cable core, such as, when cable is 7 core cable, cable core 2 and cable core 5 can be regard as first passage.
Downhole system receives the first data, and first data are what ground was sent, wherein, ground is in face of that will send out
The first information for giving downhole system is handled, such as, and the first information and clock information can be entered
The graceful code module clock of row is produced generates the first data with correction, graceful code coding, the first data after driving,
Cable is coupled to, the first data are then sent to by downhole system by the cable core 2 and cable core 5 in cable.
S120, the downhole system is handled first data, extracts the clock information；
Specifically, downhole system is received after the first data, the first data are carried out graceful code preamble reception and
Signal condition, graceful code synchronizing signal is extracted, and after graceful code demodulation, extracts the first information and clock information.
Second data are sent to the ground, described by S130, the downhole system by second channel
Two data include the clock information.
Wherein, second channel can be the cable core in cable, such as, can when cable is 7 core cable
To regard cable core 3 and cable core 6 as second channel.
Second information and clock information are interleaved by downhole system, forward error correction coding, constellation mapping QAM
Coding, inverse fast Fourier transform (Inverse Fast Fourier Transform, IFFT), digital-to-analogue
(DA) after changing, the second data are generated, the second data are coupled to cable after driving, then pass through electricity
Second data are sent to ground by cable core 3 and cable core 6 in cable.
Hereafter, downhole system can according to ground clock information, to handle the signal of upload, reach OFDM
The purpose of modulation /demodulation.
Ground receiver carries out modulus (AD) to the second data and changed to after the second data, synchronous and quick
Fourier transform (Fast Fourier Transformation, FFT), channel equalization and demapping, FFT,
After decoding, the second information in the second data is extracted.
Wherein, the clock that graceful code encoded clock will be decoded with the AD conversion in demodulator and OFDM is synchronous,
That is the clock information of three is identical.
It should be noted that the reception and transmission of data can be carried out synchronously in downhole system.
Using data transmission method provided in an embodiment of the present invention, downhole system receives ground by first passage
The first data that face is sent, first data include clock information；First data are handled,
Extract the clock information；Second data are sent to the ground, second number by second channel
According to including the clock information, message transmission rate during well logging is improved, data transmit-receive end is realized
It is synchronous.
Fig. 4 is the data transmission method flow chart that the embodiment of the present invention two is provided, as shown in figure 4, this reality
The subject of implementation for applying example is ground, and ground can be desktop computer, the system that notebook etc. has transmission-receiving function.
As shown in figure 4, the present embodiment comprises the following steps：
First data are sent to downhole system, first packet by S210, ground by first passage
Include clock information.
Alternatively, the first data are sent to downhole system, described first by the ground by first passage
Data include including before clock information:
Carry out graceful code module clock in face of the first information and clock information describedly to produce with correcting, graceful code is compiled
Code, generates the first data.
Wherein, ground can be between downhole system by cable connection, during first passage can be cable
Cable core, such as, when cable is 7 core cable, cable core 2 and cable core 5 can be regard as first passage.
The first information that ground faces to be sent to downhole system is handled, such as, can be to first letter
Breath and clock information carry out graceful code module clock and produced with correcting, graceful code coding, generate the first data, the
One data are coupled to cable after driving, are then counted by the cable core 2 and cable core 5 in cable by first
According to being sent to downhole system.
Afterwards, downhole system is received after the first data, and graceful code preamble reception and letter are carried out to the first data
Number conditioning, graceful code synchronizing signal is extracted, and after graceful code demodulation, extracts the first information and clock information.
S220, the second data that downhole system described in the ground receiver is sent by second channel are described
Second data include the clock information.
Wherein, second channel can be the cable core in cable, such as, can when cable is 7 core cable
To regard cable core 3 and cable core 6 as second channel.
Specifically, ground receiver is to the second data, second data are specifically what downhole system was sent, its
In, the second information and clock information are interleaved by downhole system, forward error correction coding, constellation mapping QAM
Coding, IFFT after DA conversions, generates the second data, the second data are coupled to cable after driving, then
Second data are sent to by ground by the cable core 3 and cable core 6 in cable.
Ground receiver is AD converted, synchronization and FFT, channel equalization to after the second data to the second data
With demapping, FFT after decoding, extracts the second information in the second data.
It should be noted that the reception and transmission on ground can be carried out synchronously.
Using data transmission method provided in an embodiment of the present invention, the first data are passed through first passage by ground
Downhole system is sent to, first data include clock information；Downhole system passes through described in ground receiver
The second data that second channel is sent, second data include the clock information, when improving well logging
Message transmission rate, realize the synchronization at data transmit-receive end.
Fig. 5 is the data transmission device schematic diagram that the embodiment of the present invention three is provided, as shown in figure 5, this reality
Applying example includes：First receiving unit 310, extraction unit 320, the first transmitting element 330；
First receiving unit 310, for receiving the first data that ground is sent, institute by first passage
Stating the first data includes clock information；
The extraction unit 320, for handling first data, extracts the clock information；
First transmitting element 330, for the second data to be sent into the ground by second channel,
Second data include the clock information.
Optionally, the extraction unit 320 specifically for,
Graceful code advance signal is carried out to first data to receive and signal condition, graceful code synchronizing signal is extracted,
Graceful code demodulation, extracts the clock information.
Optionally, described device also includes：First processing units 340；
The first processing units 340 specifically for, the second information and the clock information are interleaved,
Forward error correction coding, constellation mapping quadrature amplitude modulation coding, inverse fast Fourier transform, digital-to-analogue conversion
Afterwards, the second data are generated.
Using data transmission device provided in an embodiment of the present invention, the first receiving unit is connect by first passage
The first data that ground is sent are received, first data include clock information；Extraction unit is to described first
Data are handled, and extract the clock information；Second data are passed through second channel by the first transmitting element
The ground is sent to, second data include the clock information, data when improving well logging are passed
Defeated speed, realizes the synchronization at data transmit-receive end.
Fig. 6 is the data transmission device schematic diagram that the embodiment of the present invention four is provided, as shown in fig. 6, this reality
Applying the data transmission device described in example includes：Second transmitting element 410, the second receiving unit 420；
Second transmitting element 410, for the first data to be sent into downhole system by first passage,
First data include clock information；
Second receiving unit 420, for receiving the downhole system is sent by second channel second
Data, second data include the clock information.
Optionally, described device also includes:Second processing unit 430；
The second processing unit 430 to the first information and clock information specifically for carrying out graceful code module
Clock is produced generates the first data with correction, graceful code coding.
Using data transmission device provided in an embodiment of the present invention, the second transmitting element passes through the first data
First passage is sent to downhole system, and first data include clock information；Second receiving unit is received
The second data that the downhole system is sent by second channel, second data are believed including the clock
Breath, improves message transmission rate during well logging, realizes the synchronization at data transmit-receive end.
Professional should further appreciate that, be described with reference to the embodiments described herein
The unit and algorithm steps of each example, can be come with electronic hardware, computer software or the combination of the two
Realize, in order to clearly demonstrate the interchangeability of hardware and software, in the above description according to function
Generally describe the composition and step of each example.These functions are come with hardware or software mode actually
Perform, depending on the application-specific and design constraint of technical scheme.Professional and technical personnel can be to every
Described function is realized in individual specific application using distinct methods, but it is this realize it is not considered that
It is beyond the scope of this invention.
The step of method or algorithm for being described with reference to the embodiments described herein, can use hardware, processing
The software module that device is performed, or the two combination are implemented.Software module can be placed in random access memory
(RAM), internal memory, read-only storage (ROM), electrically programmable ROM, electrically erasable ROM,
Any other form well known in register, hard disk, moveable magnetic disc, CD-ROM or technical field
Storage medium in.
Above-described embodiment, is carried out to the purpose of the present invention, technical method and beneficial effect
Be further described, should be understood that the embodiment that the foregoing is only of the invention and
, the protection domain being not intended to limit the present invention, within the spirit and principles of the invention, is done
Any modification, equivalent substitution and improvements etc., should be included in the scope of the protection.
Claims (10)
1. a kind of data transmission method, it is characterised in that methods described includes：
Downhole system receives the first data that ground is sent by first passage, when first data include
Clock information；
The downhole system is handled first data, extracts the clock information；
Second data are sent to the ground, second data by the downhole system by second channel
Including the clock information.
2. according to the method described in claim 1, it is characterised in that the downhole system is to described
One data are handled, and are extracted the clock information and are specifically included:
The downhole system carries out graceful code advance signal to first data and received and signal condition, graceful code
Synchronizing signal is extracted, graceful code demodulation, extracts the clock information.
3. according to the method described in claim 1, it is characterised in that the downhole system is counted second
The ground is sent to according to by second channel, second data include also wrapping before the clock information
Include：
The downhole system is interleaved to the second information and the clock information, forward error correction coding, star
Seat mapping orthogonality Modulation and Amplitude Modulation coding, inverse fast Fourier transform after digital-to-analogue conversion, generates the second data.
4. a kind of data transmission method, it is characterised in that methods described includes:
First data are sent to downhole system by ground by first passage, and first data include clock
Information；
The second data that downhole system described in the ground receiver is sent by second channel, second number
According to including the clock information.
5. method according to claim 4, it is characterised in that the ground passes through the first data
First passage is sent to downhole system, and first data include including before clock information:
Carry out graceful code module clock in face of the first information and clock information describedly to produce with correcting, graceful code is compiled
Code, generates the first data.
6. a kind of data transmission device, it is characterised in that described device includes:First receiving unit, is carried
Take unit, the first transmitting element；
First receiving unit, it is described for receiving the first data that ground is sent by first passage
First data include clock information；
The extraction unit, for handling first data, extracts the clock information；
First transmitting element, for the second data to be sent into the ground, institute by second channel
Stating the second data includes the clock information.
7. device according to claim 6, it is characterised in that the extraction unit specifically for,
Graceful code advance signal is carried out to first data to receive and signal condition, graceful code synchronizing signal is extracted,
Graceful code demodulation, extracts the clock information.
8. device according to claim 6, it is characterised in that described device also includes：At first
Manage unit；
The first processing units specifically for, the second information and the clock information are interleaved, it is preceding
To Error Correction of Coding, constellation mapping quadrature amplitude modulation is encoded, inverse fast Fourier transform, after digital-to-analogue conversion,
Generate the second data.
9. a kind of data transmission device, it is characterised in that described device includes：Second transmitting element, the
Two receiving units；
Second transmitting element, for the first data to be sent into downhole system by first passage, institute
Stating the first data includes clock information；
Second receiving unit, for receiving the second number that the downhole system is sent by second channel
According to second data include the clock information.
10. device according to claim 9, it is characterised in that described device also includes:At second
Manage unit；
The second processing unit to the first information and clock information specifically for carrying out graceful code module clock
Produce and generate the first data with correction, graceful code coding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610211048.6A CN107276739A (en) | 2016-04-06 | 2016-04-06 | Data transmission method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610211048.6A CN107276739A (en) | 2016-04-06 | 2016-04-06 | Data transmission method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107276739A true CN107276739A (en) | 2017-10-20 |
Family
ID=60051968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610211048.6A Pending CN107276739A (en) | 2016-04-06 | 2016-04-06 | Data transmission method and device |
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Citations (4)
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|---|---|---|---|---|
| US20040085988A1 (en) * | 2002-11-06 | 2004-05-06 | Halliburton Energy Services,Inc. | Code-division multiple-access (CDMA) wireline telemetry system |
| CN101226681A (en) * | 2007-01-18 | 2008-07-23 | 中油测井技术服务有限责任公司 | Logging remote transmission system using discrete multi-tone modulation mode |
| CN102843166A (en) * | 2012-08-03 | 2012-12-26 | 北京航空航天大学 | Device and method for underground long-distance transmission of Manchester code |
| CN104100297A (en) * | 2014-07-31 | 2014-10-15 | 煤炭科学技术研究院有限公司 | Self-vibrating type micro-quake monitoring system and self-vibrating type micro-quake monitoring method |
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2016
- 2016-04-06 CN CN201610211048.6A patent/CN107276739A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040085988A1 (en) * | 2002-11-06 | 2004-05-06 | Halliburton Energy Services,Inc. | Code-division multiple-access (CDMA) wireline telemetry system |
| CN101226681A (en) * | 2007-01-18 | 2008-07-23 | 中油测井技术服务有限责任公司 | Logging remote transmission system using discrete multi-tone modulation mode |
| CN102843166A (en) * | 2012-08-03 | 2012-12-26 | 北京航空航天大学 | Device and method for underground long-distance transmission of Manchester code |
| CN104100297A (en) * | 2014-07-31 | 2014-10-15 | 煤炭科学技术研究院有限公司 | Self-vibrating type micro-quake monitoring system and self-vibrating type micro-quake monitoring method |
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