CN207304571U - System for logging data transmission system - Google Patents
System for logging data transmission system Download PDFInfo
- Publication number
- CN207304571U CN207304571U CN201721038176.1U CN201721038176U CN207304571U CN 207304571 U CN207304571 U CN 207304571U CN 201721038176 U CN201721038176 U CN 201721038176U CN 207304571 U CN207304571 U CN 207304571U
- Authority
- CN
- China
- Prior art keywords
- parameter
- data transmission
- hydraulic fill
- fill pipeline
- transmission system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model is system for logging data transmission system, including sequentially connected detection sensor, coding module, impulse generator, hydraulic fill pipeline, pressure sensor and decoder module；Initial data measured by detection sensor is grouped and encoded by coding module, and produces modulation waveform drive-pulse generator；Impulse generator produces the pressure waveform of change in hydraulic fill pipeline；Pressure sensor is installed on the ground segment of hydraulic fill pipeline, gathers the pressure waveform through hydraulic fill pipeline transmission and is input to decoder module.The utility model can be obviously improved signal quality, easy to follow-up decoding process using multi-parameter sequence and the frame structure of CRC check.
Description
Technical field
Logging data transmission system technology is the utility model is related to, particularly for the system of logging data transmission system.
Background technology
Data transmission coding is Manchester's code used by MWD measurement while-drilling instruments (also referred to as inserting tube) at present, is represented
Form is continuous pulse signal, each pulse period represents a binary number 0 or 1.Its advantage is very directly perceived, is held
It is readily understood, but Manchester's code will improve data transmission bauds, approach is to improve the frequency of pulse signal, but in machinery
It is greatly limited with software aspects.First, raising pulse signal frequency requires the reaction speed of impulse generator to have larger
Improve, the continuous Quick mechanical athletic meeting of impulse generator causes the service life to greatly shorten.Secondly, high-frequency pulse signal amplitude compared with
Weak, transmission is highly prone to the interference of extraneous clutter, ground decoding difficulties.Therefore, there is carrying for substance to data transmission bauds
Height is, it is necessary to using more rational coding mode.
The content of the invention
In order to solve the technical problem present in the prior art, the utility model is provided is for logging data transmission system
System, using multi-parameter sequence and the frame structure of CRC check, can be obviously improved signal quality, easy to follow-up decoding process.
The system that the utility model is used for logging data transmission system, including sequentially connected detection sensor, coding module, arteries and veins
Rush generator, hydraulic fill pipeline, pressure sensor and decoder module；Coding module by the initial data measured by detection sensor into
Row packet and coding, and produce modulation waveform drive-pulse generator；Impulse generator produces the pressure of change in hydraulic fill pipeline
Reeb shape；Pressure sensor is installed on the ground segment of hydraulic fill pipeline, gathers the pressure waveform through hydraulic fill pipeline transmission and is input to
Decoder module.
Preferably, the coding module using pulse position coding mode to the initial data measured by detection sensor into
Row coding.
Preferably, the coding module is grouped measured initial data according to parameter definition table, the parameter
The parameter of definition table is divided into V00~V15 totally 16 rows, and often row is defined as a parameter block, each parameter block is packaged into a frame number
According to being transmitted.
Preferably, the decoder module is by sampling the pressure waveform of pressure sensor, being filtered, and passes through frame knot
Structure synchronizing information, obtains receiving data after calculating.
The utility model compared with prior art, has the following advantages that and beneficial effect：
1st, due to needing the instrument parameter that measures more, if the parameter of measurement in need be packaged into a frame, a frame
The measurement parameter that data include can excessively cause the data value renewal time of same type of instrument parameter long；And if different
The data value that time combines different instrument parameter is transmitted, it is necessary to the numbering and correspondence of conveyor apparatus parameter in a frame
Data value, extra bit transfer can be added.Thus the utility model is by encapsulating multiple parameters composition parameter block, multiple
Parameter block composition sequence table, being attached under sequence table in downhole instrument, can only identify corresponding parameter by sequence number
Sequence, so as to achieve the purpose that to reduce transmitted bit number.
2nd, combined, be conducive to according to actual conditions transmission measurement data using the multisequencing of turn on pump state and recurrent state,
The data for only needing once to transmit are placed on turn on pump sequence, it is necessary to which the supplemental characteristic repeatedly measured is placed in cyclic sequence, using more
Add flexibly.
3rd, the CR check bit of 5 bit is added during framing is encapsulated, reduces the error rate of decompression data, so that
Improve the reliability of data transfer.Compared to the mistake that even-odd check can only detect 1bit, CRC check can detect 2bit at the same time
Mistake.
4th, check value is placed in first frame synchronous byte, only the synchronous mark position by increasing 3bit, it becomes possible to realize
The function of frame synchronization.
5th, while PPM codings improve efficiency of transmission, the mechanical action frequency of impulse generator is reduced, improves system
Reliability.
Brief description of the drawings
Fig. 1 is Tthe utility model system structure diagram；
Fig. 2 is argument sequence figure；
Fig. 3 is multisequencing constitutional diagram；
Fig. 4 is frame format figure；
Fig. 5 is modulation waveform figure；
Fig. 6 is impulse generator output waveform figure.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail, but the embodiment party of the utility model
Formula not limited to this.
The system structure of the utility model data transfer is as shown in Figure 1, including sequentially connected detection sensor, coding mould
Block, impulse generator, hydraulic fill pipeline, pressure sensor and decoder module, detection sensor are used to measure initial data；Encode mould
Initial data is grouped by block, calculates check value, according to coded, produces modulation waveform, drive-pulse generator；Arteries and veins
Rush the pressure waveform that generator produces change by mechanical action in hydraulic fill pipeline；Pressure sensor is installed on hydraulic fill pipeline
Ground segment, gathers the pressure waveform through hydraulic fill pipeline transmission and is input to decoder module；Decoder module passes through to pressure sensor
Pressure waveform sampled, filtered, it is and synchronous by frame structure information, obtain receiving data after calculating.
Measured data message is modulated to pulse by the utility model using pulse position coding (PPM codings) mode
In interval time between signal, set of pulses signal transmission to ground, the time interval generation between its each two pulse signal
The table numerical value of measured parameter, therefore, by next pulse and the interval time of previous pulse, can represent multidigit two into
Number processed.
The present embodiment using Multi-parameter Combined Tool and CRC check be efficient to log data, transmitting carries out frame structure design,
Its design process comprises the following steps：
1) a variety of measurement parameters are combined according to parameter definition table, as shown in Fig. 2, the parameter of parameter definition table is divided into
V00~V15 totally 16 rows, often row be defined as a parameter block, each parameter block is packaged into a frame data and is transmitted, each
Parameter block is no more than 5 parameters.
2) according to the actual needs of well logging, some parameters only need transmission primaries or minority several times, and some parameters are being surveyed
Continuously measurement transmission is needed during well.The parameter block transmitted as needed, defines turn on pump sequence and cyclic sequence, such as Fig. 3
Shown, turn on pump state and recurrent state can have multiple parameters block.Parameter block in turn on pump sequence is only after turn on pump on instrument
Transmission primaries when electric, parameter block in cyclic sequence then can after turn on pump sequence circle transmission always, until closing drilling well after pump
Instrument is stopped.
3) envelope frame processing is carried out to each parameter block, as shown in figure 4, a frame is made of multiple bytes, wherein first character
Section is made of the beginning flag position (being fixed as 001) of 3bit and the CRC check position of 5bit, other bytes only transmit number with low 4bit
According to high 4bit is 0, therefore first character section can be distinguished with other bytes, to the beginning of mark one frame.In order to distinguish not
Same parameter block, with second byte representation parameter block sequence number.The data of other bytes are according to the tabular alignment in Fig. 4, form
Middle PAD2~PAD0 is beginning flag position, and PARITY4~PARITY0 is CRC check position, and ID3~ID0 is argument sequence number, and
A7~A0 is used for the data value for storing some 8bits parameter.The length of transmitted data can be tri- kinds of 4bit, 8bit, 12bit
Form.
4) cyclic redundancy check (CRC check) value is calculated.In order to improve the reliability of transmission data, CRC check value is used
Computational methods, CRC check value initial value are all 0, after then carrying out XOR operation with the every other byte in a frame successively, to
One is moved to left, the 5th bit and the 0th bit are interchangeable, finally show that the check value of 5bit is stored in the first byte
Low 5, the value of other bytes all accounts for low 4 bit, both less than equal to 15, thus subtracts by the use of check bit as inter-frame synchronization mark
The consumption of bit frame is lacked.
5) byte conversion is subjected to signal transmission for pulse interval.After parameter block is sealed frame, according to pulse width
(PW), three minimum time interval (MT), data bit width (BW) Parameter Modulation waveforms.The formula of modulation waveform is as follows：
Time interval=minimum time interval+data * bit wides (formula 1)
For modulation waveform as shown in figure 5, pulse width refers to the high level lasting time of a pulse signal, unit is milli
Second；Time interval refer to previous end-of-pulsing to next pulse arrive before period, that is, data area be 0 when
Situation, unit are millisecond；Bit wide refers to the time interval value of every 1bit, and unit is millisecond.
Assuming that it is V00 to need configured transmission block, this sequence only has 1 parameter, its data value is 50.According to frame structure
Definition, envelope frame processing are 4 bytes, and the 2nd byte is 0000 according to its ID value.Data value 50 is represented in binary as
00110010；According to Fig. 3, the value of the 3rd byte is bit7, bit5, bit3, bit1 in data value binary number, that is,
0101；The value of 4th byte is bit6, bit4, bit2, bit0 in binary number, that is, 0100.1st byte includes
The beginning flag position (being fixed as 001) of 3bit, and the CRC check value of 5 bit.Carry out asking for drawing school according to step 4) mode
It is 11100 to test value, therefore 1 respective value of byte is 00111100 (decimal system 60).One, which is produced, after parameter block V00 envelope frames contains 4
The data packet (60,0,5,4) of a byte.If pulse width PW=200ms, minimum time MT=1200ms, bit wide BW=60ms,
Then the impulse waveform of impulse generator output is as shown in Figure 6.
6) after decoder module has received a frame data, received data is docked using same verification computational methods and carry out school
Test, and the check value obtained with transmission is compared, if identical, carries out unpacking processing, otherwise carries out discard processing to this bag.
Then, parameter block is parsed according to the parameter definition table of Fig. 2, the name of corresponding parameter can be obtained using the sequence number of parameter block
Claim.
In conclusion after using above scheme, the utility model method can effectively lift the biography of logging data transmission system
Defeated efficiency and reliability, is worthy to be popularized.
The examples of implementation of the above are only the preferred embodiment of the utility model, not limit the utility model with this
Practical range, therefore the change that all shape, principles according to the utility model are made, should all cover in the scope of protection of the utility model
It is interior.
Claims (5)
1. the system for logging data transmission system, it is characterised in that including sequentially connected detection sensor, coding module, arteries and veins
Rush generator, hydraulic fill pipeline, pressure sensor and decoder module；Coding module by the initial data measured by detection sensor into
Row packet and coding, and produce modulation waveform drive-pulse generator；Impulse generator produces the pressure of change in hydraulic fill pipeline
Reeb shape；Pressure sensor is installed on the ground segment of hydraulic fill pipeline, gathers the pressure waveform through hydraulic fill pipeline transmission and is input to
Decoder module.
2. the system according to claim 1 for logging data transmission system, it is characterised in that the coding module uses arteries and veins
Position encoded mode is rushed to encode the initial data measured by detection sensor.
3. the system according to claim 1 for logging data transmission system, it is characterised in that the coding module is according to ginseng
Number definition table is grouped measured initial data, and the parameter of the parameter definition table is divided into V00~V15 totally 16 rows, often
Row is defined as a parameter block, each parameter block is packaged into a frame data and is transmitted.
4. the system according to claim 3 for logging data transmission system, it is characterised in that each described parameter block is most
It is no more than 5 parameters more.
5. the system according to claim 1 for logging data transmission system, it is characterised in that it is right that the decoder module passes through
The pressure waveform of pressure sensor is sampled, filtered, and synchronous by frame structure information, obtains receiving data after calculating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721038176.1U CN207304571U (en) | 2017-08-17 | 2017-08-17 | System for logging data transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721038176.1U CN207304571U (en) | 2017-08-17 | 2017-08-17 | System for logging data transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207304571U true CN207304571U (en) | 2018-05-01 |
Family
ID=62444855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721038176.1U Active CN207304571U (en) | 2017-08-17 | 2017-08-17 | System for logging data transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207304571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513103A (en) * | 2019-07-04 | 2019-11-29 | 中国石油天然气集团有限公司 | Data transmission method and system in well system |
-
2017
- 2017-08-17 CN CN201721038176.1U patent/CN207304571U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513103A (en) * | 2019-07-04 | 2019-11-29 | 中国石油天然气集团有限公司 | Data transmission method and system in well system |
| CN110513103B (en) * | 2019-07-04 | 2020-05-12 | 中国石油天然气集团有限公司 | Data transmission method and system in drilling system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103431855B (en) | Pace-making electrocardio-signal non-equilibrium deep compression method | |
| CN105103459B (en) | The system and method that low data rate communications are carried out in carrier current | |
| CA2966860C (en) | Mud pulse telemetry using gray coding | |
| CN207304571U (en) | System for logging data transmission system | |
| CN109962742A (en) | Portable remote monitoring data monitoring platform and monitoring method | |
| CN103236845A (en) | Method for compacting data transmitted with drilling well mud pulse | |
| CN105227503B (en) | A kind of underground Joint Source/channel Coding Design method based on wireless drilling measuring system | |
| CN104935527A (en) | Data packing method of audio communication | |
| CN204965741U (en) | Infrared remote control study data compression system | |
| CN1848715A (en) | Method, system and processing apparatus for realizing synchronous serial data transparent transmission in TDM network | |
| CN103147745B (en) | A kind of three-dimensional acoustic wave log data high-speed transfer device based on LVDS technology | |
| CN107508658A (en) | System and its frame structure design method for logging data transmission system | |
| CN107004418B (en) | Digital communication method and device based on audio channel | |
| CN106375024A (en) | Acoustic communication system and method | |
| CN2924672Y (en) | Pulse coding-decoding communication interface system with two-way data communication function | |
| CN204498118U (en) | A kind of power carrier wave communication device | |
| CN106341107B (en) | Pulse-modulated signal calibration method and device | |
| CN1310531A (en) | Error detection method for high speed data transmission | |
| SE0103616D0 (en) | Method and system for encoding to mitigate decoding errors in a receiver | |
| CN107333289A (en) | The self-derived wavelet data compression of coalmine rescue robot environment's information and reconstructing method | |
| CN106452610A (en) | CVSD (Continuously Variable Slope Delta Modulation) digital pressure amplification modulation principle analysis experiment method and system | |
| CN109450558B (en) | Anti-interference remote communication method for underground ground | |
| CN104980253A (en) | Forward direction frame-loss resistance wireless transmission method of waveform data for measuring vital signs | |
| CN115842842A (en) | Oil field downhole data transmission system and method | |
| CN112003635B (en) | Networking and topology identification system and method under pure reactive current pulse signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |