CN105991493A - EFSK technology-based single-core communication device and communication method - Google Patents
EFSK technology-based single-core communication device and communication method Download PDFInfo
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- CN105991493A CN105991493A CN201510055787.6A CN201510055787A CN105991493A CN 105991493 A CN105991493 A CN 105991493A CN 201510055787 A CN201510055787 A CN 201510055787A CN 105991493 A CN105991493 A CN 105991493A
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Abstract
The invention belongs to the communication method technical field and relates to an EFSK technology-based single-core communication device and a communication method which can satisfy communication demands between an underground probing pipe and a ground operation platform in a well logging system. The device includes a function selection unit, a reference clock unit, a signal modulation unit, a signal amplification unit, a power source isolation unit and a signal demodulation unit, wherein the function selection unit, the signal modulation unit, the signal amplification unit, the power source isolation unit and the signal demodulation unit are connected with one another sequentially, the signal demodulation unit is connected with the function selection unit, and the reference clock unit is connected with the signal modulation unit; baseband signals are inputted from the signal modulation unit; a high-voltage direct-current power source is inputted from the power source isolation unit; and the baseband signals are outputted from the signal demodulation unit.
Description
Technical field
The invention belongs to communication means technical field, be specifically related to a kind of single based on EFSK technology and lead to
T unit and communication means.
Background technology
Traditional logging system includes underground survey system and ground control system, uses strand between two systems
Car cable is connected, and realizes the data transmission between logging system by cable and power supply is powered.Current state
The interior winch cable for mineral exploration has 4 core armored cables and the single of diameter 3.1mm of diameter 5mm
Armored cable.Comparing the first cable, the electric winch using the second armored cable is the lightest, energy
Enough it is applicable to different orographic conditions.
After using single armored cable, problem to be solved realizes data on single-core cable simultaneously
Transmitting and the power supply of power supply.Frequency shift keying (Frequency-shift keying, FSK) in low
Speed data transmission is widely used, is that information transmission uses to obtain a kind of modulation system earlier.Use and become
Depressor coupled modes, are coupled to fsk signal be connected with on the single armored cable of DC voltage, thus reach
To completing the purpose that power supply is powered while single-core cable transmitting data.But when cable length reaches
Time more than km, FSK is affected by noise jamming and signal attenuation, and the bit error rate of generation is higher, and
And transmission speed is the fastest, the bit error rate is the highest.And the frequency shift keying (Enhanced of enhancement mode
Frequency-shift keying, EFSK) by strengthening the intensity of original fsk signal, improve noise
Ratio, can be effectively realized data transmitting on distance single-core cable.
Summary of the invention
It is an object of the invention to, not enough for prior art, it is provided that one meets underground for probing in logging system
The single communicator based on EFSK technology of the communication requirement between pipe and terrestrial operation platform and communication party
Method.
The technical scheme is that
A kind of single communicator based on EFSK technology, including function selection unit, reference clock list
Unit, signal modulating unit, signal amplification unit, isolated from power unit, signal demodulation unit, Qi Zhonggong
Unit, signal can be selected to modulate unit, signal amplification unit, isolated from power unit, signal demodulation unit
Being sequentially connected, signal conditioning unit is finally connected with function selection unit；Reference clock unit is adjusted with signal
Unit processed is connected, and baseband signal inputs from signal modulating unit, and high-voltage DC power supply is from isolated from power unit
Input, baseband signal exports from signal demodulation unit.
Described function selection unit, controls to select single communicator perform signal modulation function and perform letter
Number demodulation function.
Described reference clock unit uses 4MHz crystal oscillator, and producing frequency is the square-wave signal of 4MHz.
Described signal modulating unit produces the fsk signal comprising high and low frequency, and described high-frequency signal represents
High level " 1 ", described low frequency signal represents low level " 0 ".
Described signal amplification unit, by the power amplification of fsk signal, exports EFSK signal.
Described isolated from power unit receives from the high-voltage DC power supply on single armored cable；
Described isolated from power unit uses transformer coupled mode to be coupled to by the EFSK signal through ovennodulation
On single armored cable；
EFSK signal on single armored cable can also be coupled and pass by described isolated from power unit
It is passed to signal demodulation unit.
The EFSK signal obtained from isolated from power unit is demodulated by described signal demodulation unit, conversion
Become baseband signal.
The communication means of a kind of single communicator based on EFSK technology, comprises the following steps:
(1) function selection unit controls single communicator selection signal modulation function or signal solution Power Regulation
Energy；When selecting to perform signal modulation function, signal modulating unit starts, and signal demodulation unit stops work
Make；
(2) reference clock unit produces the square-wave signal of 4MHz, and this square-wave signal is produced by 4MHz crystal oscillator
Raw；This square-wave signal is as a wherein road input signal of signal modulating unit；
(3) another road input signal of signal modulating unit is baseband signal, baseband signal and above-mentioned square wave
Signal is simultaneously as the input of signal modulating unit；The output of signal modulating unit comprises high and low frequency
Fsk signal；
(4) above-mentioned fsk signal is input to signal amplification unit, and signal amplification unit is to this fsk signal
Carry out power amplification, export EFSK signal；
(5) in step 4, EFSK signal enters isolated from power unit, by isolated from power unit by EFSK
Signal is coupled on single armored cable；
(6) when function selection unit controls single communicator selection signal demodulation function, signal is modulated
Unit quits work, and signal demodulation unit starts；
(7) isolated from power cell isolation is from high-voltage DC power supply on single armored cable, simultaneously by single
EFSK signal coupling on armored cable is come in and is transferred to signal demodulation unit；
(8) EFSK signal is demodulated by signal demodulation unit, exports baseband signal.
The invention has the beneficial effects as follows:
1., by repacking 4 core armored cable communications of winch into single armored cable communication, make 1000m
The weight of long logging winch is reduced to about 95Kg by 250Kg, significantly reduces the weight of winch, it is achieved that
The lightness of equipment, is more beneficial for the logging tasks under MODEL OVER COMPLEX TOPOGRAPHY；
2. by using EFSK technology, it is achieved that carry out data biography on light winch single-core cable simultaneously
Defeated and power to underground probe.This technology is used also to efficiently reduce km above distance data transmission mistake
The bit error rate of Cheng Dangzhong, improves the transmission speed of data.
Accompanying drawing explanation
Fig. 1 is single communication apparatus structure schematic diagram；
Fig. 2 is logging system structural representation；
Detailed description of the invention
The processing method of a kind of multiple tracks spectral measurement proposed the present invention with embodiment below in conjunction with the accompanying drawings is entered
Row is further introduced:
A kind of single communicator based on EFSK technology, including function selection unit, reference clock list
Unit, signal modulating unit, signal amplification unit, isolated from power unit, signal demodulation unit, Qi Zhonggong
Unit, signal can be selected to modulate unit, signal amplification unit, isolated from power unit, signal demodulation unit
Being sequentially connected, signal conditioning unit is finally connected with function selection unit；Reference clock unit is adjusted with signal
Unit processed is connected, and baseband signal inputs from signal modulating unit, and high-voltage DC power supply is from isolated from power unit
Input, baseband signal exports from signal demodulation unit.
Described function selection unit, controls to select single communicator perform signal modulation function and perform letter
Number demodulation function.
Described reference clock unit uses 4MHz crystal oscillator, and producing frequency is the square-wave signal of 4MHz.
Described signal modulating unit produces the fsk signal comprising high and low frequency, and described high-frequency signal represents
High level " 1 ", described low frequency signal represents low level " 0 ".
Described signal amplification unit, by the power amplification of fsk signal, exports EFSK signal.
Described isolated from power unit receives from the high-voltage DC power supply on single armored cable；
Described isolated from power unit uses transformer coupled mode to be coupled to by the EFSK signal through ovennodulation
On single armored cable；
EFSK signal on single armored cable can also be coupled and pass by described isolated from power unit
It is passed to signal demodulation unit.
The EFSK signal obtained from isolated from power unit is demodulated by described signal demodulation unit, conversion
Become baseband signal.
The communication means of a kind of single communicator based on EFSK technology, comprises the following steps:
(1) function selection unit controls single communicator selection signal modulation function or signal solution Power Regulation
Energy；When selecting to perform signal modulation function, signal modulating unit starts, and signal demodulation unit stops work
Make；
(2) reference clock unit produces the square-wave signal of 4MHz, and this square-wave signal is by 4MHz crystal oscillator
Produce；This square-wave signal is as a wherein road input signal of signal modulating unit；
(3) another road input signal of signal modulating unit is baseband signal, baseband signal and above-mentioned square wave
Signal is simultaneously as the input of signal modulating unit；The output of signal modulating unit comprises high and low frequency
Fsk signal；
(4) above-mentioned fsk signal is input to signal amplification unit, and signal amplification unit is to this fsk signal
Carry out power amplification, export EFSK signal；
(5) in step 4, EFSK signal enters isolated from power unit, by isolated from power unit by EFSK
Signal is coupled on single armored cable；
(6) when function selection unit controls single communicator selection signal demodulation function, signal is modulated
Unit quits work, and signal demodulation unit starts；
(7) isolated from power cell isolation is from high-voltage DC power supply on single armored cable, simultaneously by single
EFSK signal coupling on armored cable is come in and is transferred to signal demodulation unit；
(8) EFSK signal is demodulated by signal demodulation unit, exports baseband signal.
As in figure 2 it is shown, a kind of logging system structure includes ground control system, underground survey system is with outer
Put computer.Usb communication, ground control system and down-hole is used between computer and ground control system
Single armored cable is used to connect between measurement system.Ground control system is surveyed to down-hole at set intervals
Amount system sends instruction, has sent instruction every time, and ground control system such as is at the data mode to be received,
Upon receipt of data, these data are just transmitted to computer by ground control system.At the beginning of underground survey system
The patterns from surface instruction to be received such as beginning state is in, upon receipt of the instruction from ground,
Underground survey system control system the most earthward sends data, has sent data underground survey system more every time
Secondary the instruction mode to be received such as return to.
Underground survey system and ground control system data transmission detailed process are as follows:
Power transfer module output services voltage in ground control system to CPU and single communicator,
Output 90V high-voltage DC power supply is on single armored cable simultaneously, and this power supply is passed by single armored cable
It is passed to underground survey system.
The function selection unit that CPU in ground control system controls single communicator by data wire opens
Dynamic signal modulation function, and instruction is sent to signal modulating unit as baseband signal.Signal modulation is single
This baseband signal is converted into the fsk signal comprising high and low frequency by unit, and its medium-high frequency is 125KHz,
Representing " 1 ", low frequency signal is 83.8KHz, represents " 0 ".This fsk signal amplifies single again by signal
Unit is converted into EFSK signal.This EFSK signal is coupled to single armored cable by isolated from power unit
On, then through this cable transmission to underground survey system.After EFSK signal is transferred to armored cable,
The data modes to be received such as ground control system is in, i.e. CPU controls function selection unit enabling signal solution
Conditioning function.
The original state of underground survey system such as is at the instruction on ground to be received, i.e. CPU controls single
Function selection unit in communicator, enabling signal demodulation function.
Single communicator in underground survey system passes through isolated from power unit by single armored cable
90V power delivery to power transfer module, power transfer module by this Power convert be single communicator,
CPU and the running voltage of data collecting system.
EFSK signal on single armored cable is coupled and sends signal solution by isolated from power unit
Adjusting unit, this EFSK signal is demodulated to the base band letter identical with ground control system by signal demodulation unit
Number, the instruction that i.e. in ground control system, CPU sends.
After above-mentioned instruction receives this instruction by the CPU, CPU of data line transfer to underground survey system,
Control the function selection unit enabling signal modulation function in single communicator, and will be from data acquisition system
The data that system obtains are sent to signal modulating unit as baseband signal.
Above-mentioned baseband signal is converted into the fsk signal comprising high and low frequency by signal modulating unit, wherein
High frequency is 125KHz, represents " 1 ", and low frequency is that 83.3KHz represents " 0 ", and this fsk signal is again through letter
Number amplifying unit is converted into EFSK signal, and then EFSK signal is coupled to list by isolated from power unit
On core armored cable, and upload to ground control system.After EFSK signal uploads end, underground survey system
System such as is again restored at the pattern of surface instruction to be received, i.e. restarts signal demodulation function.
Single communicator in ground control system is obtained from single armored cable by isolated from power unit
Taking EFSK signal, and transmit this EFSK signal to signal demodulation unit, signal demodulation unit is by EFSK
Signal is converted into data acquisition system in the baseband signal identical with underground survey system, i.e. underground survey system
The data of system.
The baseband signal that in ground control system, single communicator is changed out passes through data line transfer to ground
The CPU of control system, CPU are sent to computer by USB again.
After data upload to computer, ground control system sends instruction again to underground survey system,
I.e. repeat above-mentioned whole process.
Claims (8)
1. a single communicator based on EFSK technology, it is characterised in that: include merit
Can select unit, reference clock unit, signal modulating unit, signal amplification unit, power supply every
From unit, signal demodulation unit, wherein function selection unit, signal modulation unit, signal are put
Big unit, isolated from power unit, signal demodulation unit are sequentially connected, and signal conditioning unit is last
It is connected with function selection unit；Reference clock unit is connected with signal modulating unit, baseband signal
Inputting from signal modulating unit, high-voltage DC power supply inputs from isolated from power unit, baseband signal
Export from signal demodulation unit.
A kind of single communicator based on EFSK technology, its
It is characterised by: described function selection unit, controls to select single communicator to perform signal modulation
Function and execution signal demodulation function.
A kind of single communicator based on EFSK technology, its
It is characterised by: described reference clock unit uses 4MHz crystal oscillator, and generation frequency is 4MHz
Square-wave signal.
A kind of single communicator based on EFSK technology, its
It is characterised by: described signal modulating unit produces the fsk signal comprising high and low frequency, institute
Stating high-frequency signal and represent high level " 1 ", described low frequency signal represents low level " 0 ".
A kind of single communicator based on EFSK technology, its
It is characterised by: described signal amplification unit, by the power amplification of fsk signal, exports EFSK
Signal.
A kind of single communicator based on EFSK technology, its
It is characterised by: described isolated from power unit receives from the high voltage direct current on single armored cable
Source；
Described isolated from power unit uses transformer coupled mode by the EFSK signal through ovennodulation
It is coupled on single armored cable；
EFSK signal on single armored cable can also be coupled into by described isolated from power unit
Come and be transferred to signal demodulation unit.
A kind of single communicator based on EFSK technology, its
It is characterised by: the EFSK signal obtained from isolated from power unit is entered by described signal demodulation unit
Row demodulation, is converted into baseband signal.
8. the communication means of a single communicator based on EFSK technology, it is characterised in that:
Comprise the following steps:
(1) function selection unit controls single communicator selection signal modulation function or signal
Demodulation function；When selecting to perform signal modulation function, signal modulating unit starts, signal solution
Tune unit quits work；
(2) reference clock unit produces the square-wave signal of 4MHz, and this square-wave signal is by 4MHz
Crystal oscillator produces；This square-wave signal is as a wherein road input signal of signal modulating unit；
(3) another road input signal of signal modulating unit is baseband signal, baseband signal with
Above-mentioned square-wave signal is simultaneously as the input of signal modulating unit；The output of signal modulating unit comprises
The fsk signal of high and low frequency；
(4) above-mentioned fsk signal is input to signal amplification unit, and signal amplification unit is to this FSK
Signal carries out power amplification, exports EFSK signal；
(5) in step 4, EFSK signal enters isolated from power unit, by isolated from power list
EFSK signal is coupled on single armored cable by unit；
(6) when function selection unit controls single communicator selection signal demodulation function,
Signal modulating unit quits work, and signal demodulation unit starts；
(7) isolated from power cell isolation is from high-voltage DC power supply on single armored cable, with
Time by single armored cable EFSK signal couple come in and be transferred to signal demodulation unit；
(8) EFSK signal is demodulated by signal demodulation unit, exports baseband signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055787.6A CN105991493A (en) | 2015-02-03 | 2015-02-03 | EFSK technology-based single-core communication device and communication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510055787.6A CN105991493A (en) | 2015-02-03 | 2015-02-03 | EFSK technology-based single-core communication device and communication method |
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| CN1676874A (en) * | 2005-04-14 | 2005-10-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Well deflection and position gamma measuring nistrument during drilling |
| CN101158284A (en) * | 2007-11-05 | 2008-04-09 | 聂泳培 | Single-core cable well logging data high speed transmission system |
| CN201674524U (en) * | 2010-05-17 | 2010-12-15 | 中国海洋石油总公司 | Underground modulator-demodulator |
| CN101951279A (en) * | 2010-09-10 | 2011-01-19 | 长春锐利科技有限公司 | Power line carrier communication method for oil field underground testing and adjusting equipment |
| CN103684947A (en) * | 2013-12-12 | 2014-03-26 | 合肥工大高科信息科技股份有限公司 | FSK communication circuit with remote hard reset function and communication method thereof |
-
2015
- 2015-02-03 CN CN201510055787.6A patent/CN105991493A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676874A (en) * | 2005-04-14 | 2005-10-05 | 中国石化集团胜利石油管理局钻井工艺研究院 | Well deflection and position gamma measuring nistrument during drilling |
| CN101158284A (en) * | 2007-11-05 | 2008-04-09 | 聂泳培 | Single-core cable well logging data high speed transmission system |
| CN201674524U (en) * | 2010-05-17 | 2010-12-15 | 中国海洋石油总公司 | Underground modulator-demodulator |
| CN101951279A (en) * | 2010-09-10 | 2011-01-19 | 长春锐利科技有限公司 | Power line carrier communication method for oil field underground testing and adjusting equipment |
| CN103684947A (en) * | 2013-12-12 | 2014-03-26 | 合肥工大高科信息科技股份有限公司 | FSK communication circuit with remote hard reset function and communication method thereof |
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Application publication date: 20161005 |