CN207321253U - A kind of drilling platforms Power Line Carrier Communication Module based on filter circuit design - Google Patents
A kind of drilling platforms Power Line Carrier Communication Module based on filter circuit design Download PDFInfo
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- CN207321253U CN207321253U CN201720905851.XU CN201720905851U CN207321253U CN 207321253 U CN207321253 U CN 207321253U CN 201720905851 U CN201720905851 U CN 201720905851U CN 207321253 U CN207321253 U CN 207321253U
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Abstract
The utility model discloses a kind of drilling platforms Power Line Carrier Communication Module based on filter circuit design, it includes termination power, high-pass filter, AFE(analog front end), baseband processor and microcontroller.Termination power, high-pass filter, AFE(analog front end), baseband processor and microcontroller are electrically connected successively.Termination power is used for receiving the signal from power line, and this signal is sent to high-pass filter and is filtered processing, signal after filtered processing is sent to be amplified and analog/digital conversion into AFE(analog front end), signal after amplification and analog/digital conversion, which is sent into baseband processor, demodulates useful signal, and the useful signal is sent into microcontroller.Equally, microprocessor control baseband processor generates signal, is sent into termination power by AFE(analog front end), high-pass filter, is finally coupled into power line.This case suppresses higher hamonic wave interference, realizes the real-time and stability of power line carrier communication by increasing high-pass filtering circuit.
Description
Technical field
A kind of filtering netwok that is based on is the utility model is related to design in oil drilling platform power line carrier communication mould
Utilization in the block, lifts oil drilling platform systematic electricity line carrier communication performance；It is mainly used in oil drilling platform electric power
Line carrier communication field.
Background technology
In oil drilling platform control system, it is desirable to the communication delay 3ms of oil drilling platform power line carrier module, and
It must assure that the real-time and stability of communication.
Existing oil drilling platform Power Line Carrier Communication Module generally comprises termination power, AFE(analog front end), Base-Band Processing
Device and microcontroller, are shown in attached drawing 1.After the carrier signal for needing to send is modulated in baseband processor, by being turned by digital-to-analogue
The AFE(analog front end) of parallel operation and power amplifier composition, then the termination power by being made of coupler, isolation capacitance, are injected into power line
In.When receiving carrier signal, signal is extracted by termination power from power line, and is amplified by configurable gain
The AFE(analog front end) of device and analog to digital conversion circuit composition, exports and is demodulated to baseband processor, and then restore reception data.
Microcontroller is responsible for the protocol conversion between carrier telecommunication and other Peripheral Interfaces herein.Whole oil drilling
Platform Power Line Carrier Communication Module is parallel in oil drilling platform power line.
And in existing oil drilling platform power line communication channel, there are the high-frequency ac power of 23KHz（260V~
500V）, be generated by it higher hamonic wave interference, see attached drawing 4.Higher hamonic wave interference enters electricity by isolation capacitance and coupler
The transmitting terminal and receiving terminal of line of force carrier module, interfere with the normal work of power line carrier transmitting terminal and receiving terminal, serious shadow
The communication quality of power line carrier is rung, seriously affects the real-time and stability of oil drilling platform power line carrier communication.
Utility model content
The utility model proposes a kind of drilling platforms Power Line Carrier Communication Module based on filter circuit design, pass through
Increase high-pass filtering circuit, suppress higher hamonic wave interference, realize the real-time and stability of power line carrier communication.
What the technical solution of the utility model was realized in：
A kind of drilling platforms Power Line Carrier Communication Module based on filter circuit design, it includes termination power, high pass
Wave filter, AFE(analog front end), baseband processor and microcontroller；
The termination power, high-pass filter, AFE(analog front end), baseband processor and microcontroller are electrically connected successively,
The termination power is used for receiving the signal from power line, and this signal is sent to the high-pass filter and is filtered place
Reason, the signal after filtered processing, which is sent into the AFE(analog front end), to be amplified and analog/digital conversion, by amplification and analog
Transformed signal, which is sent into the baseband processor, demodulates useful signal, and the useful signal is sent into the microcontroller
In, equally, baseband processor described in the microprocessor control generates signal, and carrying out D/A by the AFE(analog front end) turns
Change and signal amplifies, then processing is filtered by the high-pass filter, the signal after treating passes through the termination power
Send into power line；
The high-pass filter includes receiving circuit and transtation mission circuit, the receiving circuit include capacitance C8, C9, C10,
C11 and C12, inductance L3 and L4, and resistance R3 and R4；The both ends of the inductance L4 connect resistance R3 and R4 respectively, and pass through
Resistance R3 connects the output terminal of termination power with R4, and the inductance L4 forms level-one filter circuit with capacitance C11 and C12, described
The both ends of inductance L4 are connected on one end of the capacitance C11 and C12, and the inductance L3 is formed with capacitance C8, C9 and C10
Secondary filter circuit, the other end of the capacitance C11 and C12 are connected to the both ends of the inductance L3, the both ends of the inductance L3
It is connected to again on one end of the capacitance C9 and C10, the other end of the capacitance C9 and C10 is connected to the capacitance C8's
On both ends, the receiving terminal of the both ends connection AFE(analog front end) of the capacitance C8；The transtation mission circuit include capacitance C3, C4, C5, C6 and
C7, inductance L1 and L2, and resistance R1 and R2；The both ends of the inductance L2 connect resistance R1 and R2 respectively, and pass through resistance R1
The receiving terminal of termination power is connected with R2, the inductance L2 forms level-one filter circuit with capacitance C6 and C7, the inductance L2's
Both ends are connected on one end of the capacitance C6 and C7, and the inductance L1 forms secondary filter electricity with capacitance C3, C4 and C5
Road, the other end of the capacitance C6 and C7 are connected to the both ends of the inductance L1, and the both ends of the inductance L1 are connected to again
On one end of the capacitance C4 and C5, the other end of the capacitance C4 and C5 is connected on the both ends of the capacitance C3, the electricity
Hold the output terminal of the both ends connection AFE(analog front end) of C3.
In the drilling platforms Power Line Carrier Communication Module based on filter circuit design of the utility model, the coupling
Circuit includes coupling transformer and isolation capacitance CA1, CA2, and the coupling transformer includes the first winding, the second winding and the 3rd
Winding, described isolation capacitance CA1, CA2 are connected to the receiving terminal and transmitting terminal of first winding, second winding
Both ends connect the resistance R3 and R4 respectively, and the both ends of the tertiary winding connect the resistance R1 and R2 respectively.
In the drilling platforms Power Line Carrier Communication Module based on filter circuit design of the utility model, the simulation
Front end includes power amplifier VGA, PA and converter ADC, DAC, and the VGA and ADC, which are serially connected in, to be received in circuit, the capacitance
The receiving terminal of the both ends connection VGA of C8, the PA and DAC, which are serially connected in, to be sent in circuit, the both ends connection PA's of the capacitance C3
Output terminal.
In the drilling platforms Power Line Carrier Communication Module based on filter circuit design of the utility model, described first
The coil ratio of winding, the second winding and the tertiary winding is 1:1:1.
Implement this drilling platforms Power Line Carrier Communication Module based on filter circuit design of the utility model, have
Following beneficial effect：By increasing high-pass filtering circuit, it is humorous to suppress oil drilling platform power line channel high order present in
Wave interference, realizes the real-time and stability of power line carrier communication, and realizing hardly is increasing power line carrier communication mould
In the case of the cost of block, oil drilling platform systematic electricity line carrier communication performance is significantly lifted；By increased circuit only
It is made of common inductance, capacity cell, does not introduce new individual chips, it can be ensured that is not increased original power line carrier and lead to
Believe the size of module.
Brief description of the drawings
Fig. 1 is the schematic diagram of existing oil drilling platform Power Line Carrier Communication Module；
Fig. 2 is the signal of the drilling platforms Power Line Carrier Communication Module based on filter circuit design of the utility model
Figure；
Fig. 3 is the internal circuit configuration schematic diagram of high-pass filter in Fig. 2；
Fig. 4 is that receiving terminal measurement power line channel bottom is made an uproar in Fig. 1；
Fig. 5 is to measure the power line channel bottom that receiving terminal introduces in high-pass filtering circuit rear end in Fig. 2 to make an uproar.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe.
This drilling platforms Power Line Carrier Communication Module based on filter circuit design of the utility model, it includes coupling
Close circuit 1, high-pass filter 2, AFE(analog front end) 3, baseband processor 4 and microcontroller 5.As shown in Fig. 2, in existing oil drilling
In platform Power Line Carrier Communication Module circuit structure, in the front end of receiving terminal and the rear end of transmitting terminal increase high-pass filtering electricity
Road, then coupling transformer and isolation capacitance are coupled with, finally access in A the and B phase lines of oil drilling platform power line.
The termination power 1, high-pass filter 2, AFE(analog front end) 3, baseband processor 4 and microcontroller 5 carry out electricity successively
Connection.By isolation capacitance CA1 and CA2（10KV pressure voltages）, then by coupling transformer after, oil drilling platform downhole electrical motor
Required supply and AC power supply 600V ~ 1500V/20Hz ~ 80Hz can be isolated, and the signal less than tens kHz can also be subject to
Decay.The signal isolated by the termination power 1 send to the high-pass filter 2 and is filtered processing, filtered place
Signal after reason, which is sent into the AFE(analog front end) 3, to be amplified and analog/digital conversion, the signal after amplification and analog/digital conversion
It is sent into the baseband processor 4 and demodulates useful signal, and the useful signal is sent into the microcontroller 5.Equally, institute
Stating microcontroller 5 controls the baseband processor 4 to generate signal, and D/A switch and signal are carried out by the AFE(analog front end) 3
Amplification, then is filtered processing by the high-pass filter 2, the signal after treating by the termination power 1 send to
In power line.In receiving terminal and transmitting terminal, the high-pass filtering circuit newly increased plays the role of isolating higher hamonic wave interference, prevents
Higher hamonic wave interference is entered in the circuit of AFE(analog front end) 3.
The high-pass filter 2 includes receiving circuit and transtation mission circuit, the receiving circuit include capacitance C8, C9, C10,
C11 and C12, inductance L3 and L4, and resistance R3 and R4.The both ends of the inductance L4 connect resistance R3 and R4 respectively, and pass through
Resistance R3 connects the output terminal of termination power 1 with R4, and the inductance L4 forms level-one filter circuit with capacitance C11 and C12, described
The both ends of inductance L4 are connected on one end of the capacitance C11 and C12, and the inductance L3 is formed with capacitance C8, C9 and C10
Secondary filter circuit, the other end of the capacitance C11 and C12 are connected to the both ends of the inductance L3, the both ends of the inductance L3
It is connected to again on one end of the capacitance C9 and C10, the other end of the capacitance C9 and C10 is connected to the capacitance C8's
On both ends, the receiving terminal of the both ends connection AFE(analog front end) 3 of the capacitance C8.The transtation mission circuit includes capacitance C3, C4, C5, C6
And C7, inductance L1 and L2, and resistance R1 and R2.The both ends of the inductance L2 connect resistance R1 and R2 respectively, and pass through resistance
R1 connects the receiving terminal of termination power 1 with R2, and the inductance L2 forms level-one filter circuit, the inductance L2 with capacitance C6 and C7
Both ends be connected on one end of the capacitance C6 and C7, the inductance L1 and capacitance C3, C4 and C5 form secondary filter
Circuit, the other end of the capacitance C6 and C7 are connected to the both ends of the inductance L1, and the both ends of the inductance L1 connect respectively again
On one end of the capacitance C4 and C5, the other end of the capacitance C4 and C5 is connected on the both ends of the capacitance C3, described
The output terminal of the both ends connection AFE(analog front end) 3 of capacitance C3.
The termination power 1 includes coupling transformer and isolation capacitance CA1, CA2, the coupling transformer include first around
Group, the second winding and the tertiary winding, the coil ratio of first winding, the second winding and the tertiary winding is 1:1:1.It is described
Isolation capacitance CA1, CA2 are connected to the receiving terminal and transmitting terminal of first winding, the both ends difference of second winding
The resistance R3 and R4 is connected, the both ends of the tertiary winding connect the resistance R1 and R2 respectively.
The AFE(analog front end) 3 includes power amplifier VGA, PA and converter ADC, DAC, and the VGA and ADC, which are serially connected in, to be connect
Withdraw in road, the receiving terminal of the both ends connection VGA of the capacitance C8, the PA and DAC, which are serially connected in, to be sent in circuit, the capacitance
The output terminal of the both ends connection PA of C3.
As shown in figure 3, in circuit is received, the bottom in carrier signal and power line is made an uproar interference, through isolation capacitance CA1 and
After CA2 isolation capacitances and coupling transformer T1, the input impedance matching circuit being made of resistance R3 and R4 is linked into, wherein inputting
Impedance matching circuit is that the value of resistance R3/R4 is tens Ω grades in order to enable effective transmission of signal maximum power（This implementation
The value of resistance R3/R4 is 24.9 Ω in example）.
Carrier signal is delivered in high-pass filtering circuit again, wherein capacitance C12, C11（Capacitance C12/ in the present embodiment
The value of C11 is 0.1uF）With inductance L4（The value of inductance L4 is 47uH in the present embodiment）Form level-one filter circuit, capacitance
C10、C9、C8（The value of capacitance C10, C9, C8 are respectively 0.1uF, 0.1uF, 120pF in the present embodiment）With inductance L3（This reality
The value for applying inductance L3 in example is 47uH）Form secondary filter circuit.After high-pass filtering circuit, the low frequency in power line is done
Disturb suppressed, and carrier signal is transported in VGA modules and late-class circuit., can be by adjusting capacitance in high-pass filtering circuit
The low frequency signal by the circuit is limited with the value of inductance,（In this utilization, the value of capacitance is about 100nF, and inductance takes
Value is about tens uH）；Principle is to be changed using the reactance of capacitance and inductance element with the change of frequency；Purpose is exactly to suppress low
Frequency disturbs（Mainly suppress higher hamonic wave interference caused by high frequency electric source with upper herein, fundamental frequency is about 23 kHz）.
Equally, in circuit is sent, carrier signal is delivered in high-pass filtering circuit through PA modules, wherein capacitance C3, C4,
C5（The value of capacitance C3, C4, C5 are respectively 120pF, 0.1uF, 0.1uF in the present embodiment）With inductance L1（It is electric in the present embodiment
The value for feeling L1 is 47uH）Form secondary filter circuit, capacitance C6, C7（The value of capacitance C6/C7 is 0.1uF in the present embodiment）
With inductance L2（The value of inductance L2 is 47uH in the present embodiment）Level-one filter circuit is formed, then is delivered to by resistance R1 and R2
（The value of resistance R1/R2 is 24.9 Ω in the present embodiment）The output impedance match circuit of composition, is finally delivered to coupling coil
And isolation capacitance, it is linked into power line.Similarly, the bottom in power line is made an uproar interference, can be also high-pass filtered circuit and be isolated, and is prevented
The higher hamonic wave interference that only high frequency electric source is brought is entered in power amplifier circuit.
In oil drilling platform power line channel, when accessing high frequency electric source, surveyed in the receiving terminal of power line carrier module
Power line channel is measured, as shown in Figure 4.It was found from measured waveform, the fundamental frequency that high frequency electric source produces disturbs for the higher hamonic wave of 23KHz
Enter directly into the receiving terminal of power line carrier, serious interference.
After accessing high-pass filtering circuit module, at the power line channel bottom of high-pass filtering circuit rear end measurement receiving terminal introducing
Make an uproar, as shown in Figure 5.It was found from measured waveform, after introducing high-pass filtering circuit, the fundamental frequency that high frequency electric source produces is the height of 23KHz
Subharmonic interference is effectively suppressed, and no longer disturbs the receiving terminal of power line carrier module and the normal work of transmitting terminal.So far,
The present utility model purpose is accomplished.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on, should be included in the utility model
Protection domain within.
Claims (4)
1. a kind of drilling platforms Power Line Carrier Communication Module based on filter circuit design, it is characterised in that including coupling electricity
Road, high-pass filter, AFE(analog front end), baseband processor and microcontroller；
The termination power, high-pass filter, AFE(analog front end), baseband processor and microcontroller are electrically connected successively, described
Termination power is used for receiving the signal from power line, and this signal is sent to the high-pass filter and is filtered processing, passes through
Cross the signal after filtering process and send into the AFE(analog front end) and be amplified and analog/digital conversion, after amplification and analog/digital conversion
Signal be sent into the baseband processor and demodulate useful signal, and the useful signal is sent into the microcontroller, together
Sample, baseband processor described in the microprocessor control generate signal, and D/A switch and letter are carried out by the AFE(analog front end)
Number amplification, then is filtered processing by the high-pass filter, the signal after treating by the termination power send to
In power line；
The high-pass filter includes receiving circuit and transtation mission circuit, the receiving circuit include capacitance C8, C9, C10, C11 and
C12, inductance L3 and L4, and resistance R3 and R4；The both ends of the inductance L4 connect resistance R3 and R4 respectively, and pass through resistance R3
The output terminal of termination power is connected with R4, the inductance L4 forms level-one filter circuit, the inductance L4 with capacitance C11 and C12
Both ends be connected on one end of the capacitance C11 and C12, the inductance L3 and capacitance C8, C9 and C10 form two level filter
Wave circuit, the other end of the capacitance C11 and C12 are connected to the both ends of the inductance L3, and the both ends of the inductance L3 are distinguished again
It is connected on one end of the capacitance C9 and C10, the other end of the capacitance C9 and C10 is connected to the both ends of the capacitance C8
On, the receiving terminal of the both ends connection AFE(analog front end) of the capacitance C8；The transtation mission circuit includes capacitance C3, C4, C5, C6 and C7,
Inductance L1 and L2, and resistance R1 and R2；The both ends of the inductance L2 connect resistance R1 and R2 respectively, and pass through resistance R1 and R2
The receiving terminal of termination power is connected, the inductance L2 forms level-one filter circuit, the both ends of the inductance L2 with capacitance C6 and C7
It is connected on one end of the capacitance C6 and C7, the inductance L1 forms secondary filter circuit, institute with capacitance C3, C4 and C5
The other end for stating capacitance C6 and C7 is connected to the both ends of the inductance L1, and the both ends of the inductance L1 are connected to the electricity again
On the one end for holding C4 and C5, the other end of the capacitance C4 and C5 is connected on the both ends of the capacitance C3, the capacitance C3's
Both ends connect the output terminal of AFE(analog front end).
2. the drilling platforms Power Line Carrier Communication Module according to claim 1 based on filter circuit design, its feature
Be, the termination power includes coupling transformer and isolation capacitance CA1, CA2, the coupling transformer include the first winding,
Second winding and the tertiary winding, described isolation capacitance CA1, CA2 are connected to the receiving terminal and transmitting terminal of first winding,
The both ends of second winding connect the resistance R3 and R4 respectively, and the both ends of the tertiary winding connect the resistance R1 respectively
And R2.
3. the drilling platforms Power Line Carrier Communication Module according to claim 1 based on filter circuit design, its feature
It is, the AFE(analog front end) includes power amplifier VGA, PA and converter ADC, DAC, and the VGA and ADC, which are serially connected in, to be received back
The receiving terminal of the both ends connection VGA of Lu Zhong, the capacitance C8, the PA and DAC, which are serially connected in, to be sent in circuit, the capacitance C3's
Both ends connect the output terminal of PA.
4. the drilling platforms Power Line Carrier Communication Module according to claim 2 based on filter circuit design, its feature
It is, the coil ratio of first winding, the second winding and the tertiary winding is 1:1:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720905851.XU CN207321253U (en) | 2017-07-25 | 2017-07-25 | A kind of drilling platforms Power Line Carrier Communication Module based on filter circuit design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720905851.XU CN207321253U (en) | 2017-07-25 | 2017-07-25 | A kind of drilling platforms Power Line Carrier Communication Module based on filter circuit design |
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| Publication Number | Publication Date |
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| CN207321253U true CN207321253U (en) | 2018-05-04 |
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ID=62433761
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|---|---|---|---|
| CN201720905851.XU Expired - Fee Related CN207321253U (en) | 2017-07-25 | 2017-07-25 | A kind of drilling platforms Power Line Carrier Communication Module based on filter circuit design |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11418267B2 (en) * | 2019-02-08 | 2022-08-16 | Electronics And Telecommunications Research Institute | Receiver for removing noise generated in human body communication |
-
2017
- 2017-07-25 CN CN201720905851.XU patent/CN207321253U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11418267B2 (en) * | 2019-02-08 | 2022-08-16 | Electronics And Telecommunications Research Institute | Receiver for removing noise generated in human body communication |
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Granted publication date: 20180504 Termination date: 20190725 |