CN1734386A - Remote sensing regulated voltage power supply - Google Patents
Remote sensing regulated voltage power supply Download PDFInfo
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- CN1734386A CN1734386A CN 200510091907 CN200510091907A CN1734386A CN 1734386 A CN1734386 A CN 1734386A CN 200510091907 CN200510091907 CN 200510091907 CN 200510091907 A CN200510091907 A CN 200510091907A CN 1734386 A CN1734386 A CN 1734386A
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 6
- 239000000872 buffer Substances 0.000 claims abstract description 14
- 210000003954 umbilical cord Anatomy 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 description 14
- 238000005259 measurement Methods 0.000 description 5
- 239000013307 optical fiber Substances 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
A remote sensing, regulated voltage power supply system is disclosed. The power includes a controllable output power supply having a control input terminal. An output of the power supply is related to a voltage signal applied to the control input terminal. Power supply lines connect an electrical load to a power output of the power supply. A voltage sensing element is coupled to at least one of the power supply lines proximate the electrical load. A buffer circuit is coupled between the voltage sensing element and the control input terminal. In one embodiment, the buffer circuit includes a high impedance voltage comparator disposed proximate the power supply and coupled at one input to a voltage sensing. The voltage sensing line extends from the voltage sensing element to the voltage comparator.
Description
The cross reference of related application
According to 119 sections in United States code the 35th chapter, the application require the exercise question submitted on August 2nd, 2004 for " remote control stabilized voltage supply (Remote Controlled Regulated VoltagePower Supply) " and U.S. Provisional Application No.60/598,181 right of priority, its whole disclosed contents are included in herein.
Technical field
The present invention relates generally to the controlled voltage source domain.In particular, the present invention relates to and can be added to by near the voltage the electric loading of described power supply power supply by sensing, wherein said load is arranged on the position of leaving described power supply and significant the variation is taken place easily along quite long electrical lead.
Background technology
Typical direct current (DC) power supply with voltage stabilizing output is to come work by measuring at power output end or near the voltage it.Regulate the magnitude of current that produces and be transmitted to electric loading by power supply like this, all keep invariable basically no matter make measured voltage load how to change.
In some applications, the electrical lead between power supply and the electric loading is quite long.A kind of this type of application is exactly oceanic earthquake sensing system (is called " trailing cable " streamers).Oceanic earthquake sensor trailing cable comprises a plurality of seismic sensors (normally hydrophone), and they are arranged on along on the spaced positions from each other of high load bearing stength part or cable.Cable finally is fixed on the seismic survey vessels, and described surveying vessel drags and draws audiphone and pass the waters.Sensor on the audiphone produces the electric signal corresponding to the seismic energy that is detected.Each seismic sensor and/or seismic sensor group are electrically connected on signal Processing and the telemetry module.Module also is arranged on along on the spaced positions from each other of cable.Signal Processing and telemetry module be used to amplify, regulate from the electric signal of each sensor and with them and be formatted into one or more signal telemetry types.Signal telemetry can be optics (this moment, module comprised one or more electrical optical converters), or electricity.No matter use which kind of physical circuit on any module, trailing cable must comprise one or more electric conductors, so that electric power is sent to module, and must transmit electric power on very long distance.As a result, between the output voltage of the voltage of module input and power supply, just may have marked difference.Observe, because this voltage drop makes number of modules can not be operated in optimum condition.And when typical oceanic earthquake sensing system was worked, each module may be switched on or disconnect, and the electric loading that causes finally being added to the power supply on the seismic survey vessels changes.
Another problem that need consider is to make the towing of cable in water keep minimum in the oceanic earthquake sensing system.The trailing cable system of some type comprises a plurality of trailing cables, and they are connected on the device of the horizontal spacing that is used for keeping between the trailing cable and relative lengthwise position.Be called surveying the cable system that is used to transmit electric power and telemetry between shake ship and the single trailing cable forward end (or the trailing cable locating device in the configuration of many trailing cables) " umbilical cord (umbilical) lead-in wire ".In order to reduce the towing that umbilical cord causes, the diameter with the umbilical cord lead-in wire reduces, in some versions, utilizes the method for optics remote measurement.The diameter that reduces electric conductor in the umbilical cord lead-in wire just can reduce the diameter of umbilical cord lead-in wire, and then reduces the towing of umbilical cord lead-in wire.The various restrictions of known power source system make umbilical cord lead-in wire electric conductor diameter significantly reduce unactual.
A kind of possible embodiment of utilizing power-supply system known in the prior art to improve the voltage adjustment of trailing cable and reducing the electric conductor size is included in provides DC-DC transducer away from the umbilical cord lead terminal of surveying the shake ship, and it can reduce the current requirements to the umbilical cord lead-in wire.But it is believed that this configuration can reduce the reliability of system, because the DC-DC transducer must be arranged in the water.So above-mentioned embodiment it is believed that it also is unpractiaca.
Therefore, need a kind of voltage stabilizing DC power supply, it can be with the sizable load distance of distance power supply, keep accurate voltage under variable load condition, can reduce power supply is connected to simultaneously the required diameter or the size of the electric conductor of load.
Summary of the invention
One aspect of the present invention is the remote sensing regulated voltage power supply system.Power supply according to this aspect of the present invention comprises the controllable output power with control input end.Power supply output is relevant with the voltage signal that is added to the control input end.Power lead is connected to electric loading the power take-off of power supply.Pressure-active element is connected near the electric loading at least one power lead.Buffer circuits is connected between pressure-active element and the control input end.In one embodiment, buffer circuits comprises the high impedance voltage comparator, and it is arranged near the power supply and is connected to an input end of pressure-active element.The voltage reading outlet extends to voltage comparator from pressure-active element.
In another embodiment, pressure-active element comprises the analog to digital converter that is connected on the digital telemetry transmitter.Transmitter is connected near on the power lead of load.Digital telemeter receiver is connected near on the power lead of power supply.The output terminal of receiver provides voltage measurement signal, and described signal is connected to voltage controling input end.
Another aspect of the present invention is the oceanic earthquake sensing system.System according to this aspect of the present invention comprises that the one end is connected to the oceanic earthquake trailing cable inlead of surveying the shake ship.The other end of inlead is connected at least one seismic sensor trailing cable.Trailing cable comprises a plurality of signal processing modules, and they are arranged on the spaced positions from each other along trailing cable.Controllable output power is arranged on the survey shake ship.Power supply comprises the control input end.Power supply output is relevant with the voltage signal that is added to the control input end.Power lead is connected to the power input end of module the power take-off of power supply.Pressure-active element is connected to the power lead near one of described module.Buffer circuits is connected between pressure-active element and the voltage controling input end.
Can understand other aspects and advantages of the present invention from following description and appended claims.
Description of drawings
Fig. 1 illustrates according to power supply of the present invention can be used for wherein oceanic earthquake sensing system.
Fig. 2 illustrates the functional-block diagram according to an embodiment of power supply of the present invention.
Fig. 3 illustrates another embodiment of remote voltage sensing unit and impact damper.
Embodiment
Fig. 1 illustrates the oceanic earthquake sensing system that can comprise embodiment of the invention power supply.Among Fig. 1, survey shake ship 10 and in waters 22, pull one or more oceanic earthquake sensor trailing cables 14.For the purpose of clear, a trailing cable only is shown among Fig. 1, but the quantity of trailing cable does not limit the scope of the present invention all in any embodiment.Survey record and navigator 12 that shake ship 10 comprises this professional known type, be used for record from the signal of one or more seismic sensors (Fig. 1 does not illustrate separately), determine that any moment surveys the position of shake ship 10 and seismic sensor (not shown), and the startup that is used to control the seismic energy source (not shown in figure 1) is regularly.Recording unit 12 comprises voltage stabilizing output DC source 13 (being illustrated below with reference to Fig. 2), is used for each module (following explanation) power supply on trailing cable.
Shown in Fig. 2 according to the example embodiment of remote sense voltage controlled source 13 of the present invention.Based on the voltage controller 38 of microprocessor be arranged in the power supply 13 or near.Microprocessor voltage controller 38 can be the digital voltage controller of the known any kind of this specialty.Power supply 13 is usually located to be surveyed on the shake ship 10.In the specific embodiment of power-supply controller of electric, detect the voltage at trailing cable module place and it is added on the voltage controller 38 by impact damper, comprise high input impedance operational amplifier in the voltage controller 38 at impact damper described in first embodiment.Be used to be applied near the remote sense cable module position to the device of voltage level comprise electrical lead 20C, the latter extends between the position of cable sensor and voltage controller 38.The purpose of buffer circuits is to provide the voltage measurement path between the control input end 38B of the load end of umbilical cord lead-in wire 20 and voltage controller 38, make be added to control signal on the 38B of control input end (though be simulation or numeral) directly related with the go between voltage of 20 load ends of umbilical cord, and be not subjected to the go between influence of voltage drop on 20 of umbilical cord basically.
The voltage that need be added on the circuit module 18 is selected and is added on the input end 38 by the operator.For example, if desired the load end at electrical lead 20A add+50 volts, add-50 volts at the load end of electrical lead 20B, the voltage amplitude that then is added on the module 18 is 100 volts.
Fig. 2 illustrates an embodiment based on the voltage controller 38 of microprocessor.The input signal (being 100 volts in this example) that will equal to be added to the required output voltage on the cable module 18 is added to the input end 38A based on the voltage controller 38 of microprocessor.The input that the operator sets is cushioned by unity gain amplifier 39A, and is added to just (+) end of operational amplifier (comparer) 39B.Because following explanation, the virtual voltage that is added on the trailing cable module is represented in the input that is added to negative (-) end of operational amplifier 39B.If be added to the input signal that the signal level of negative (-) end of comparer 39B is set less than the operator who is added to input end 38A, then the output of comparer 39B will increase.If be added to the incoming level that the signal level of negative (-) end of comparer 39B is set greater than the operator who is added to input end 38A, then the output of comparer 39B will reduce.
The output of comparer 39B is added to power amplifier 50, it responds to the output amplitude of comparer 39B, between terminal 38B and 38E, produce dc voltage, but have the amplified current ability, make power amplifier 50 required electric current can be offered trailing cable module 18 with the selected voltage level that is added to input end 38A of operator.As previously mentioned, having tangible voltage drop on the current source line 20A between the cable module 18 on the positive output end 38D of voltage amplifier 50 and the trailing cable 14, and between the negative output terminal 38E of cable module and voltage amplifier 50, also having voltage drop.The such control power amplifiers 50 of the output of comparer 39 makes voltage amplifier 50 output voltages have such amplitude, makes that the actual voltage that is added to cable module 14 two ends is required voltage amplitude.That is to say that the voltage drop that the amplitude of output voltage of voltage amplifier 50 equals electric conductor 20A adds that the voltage drop of electric conductor 20B adds the voltage that is added to cable module 14 two ends.
Therefore, the output voltage that outputs to power amplifier 50 at anode for (+V+y), in the formula+V is the positive voltage amplitude that is added on the cable module, and y represents the voltage drop between power amplifier positive output end 38D and the cable module.The voltage of the negative output terminal 38E of power amplifier 50 is that (V-y), in the formula-V is the negative voltage amplitude that is added to the trailing cable module, and y represents the voltage drop between cable module and the power amplifier negative output terminal 38E.Should be pointed out that voltage drop and the voltage drop between cable module and the power amplifier negative output terminal 38E supposed between power amplifier positive output end 38D and the cable module equate basically.
Comparer 37B can be any operational amplifier, and its positive input terminal is connected to the positive output end 38D of power amplifier 50, and its negative input end is connected to the negative output terminal 38E of power amplifier 50, make comparer 37B output representative (+2V+2y).As previously mentioned, the positive input terminal 38B of comparer 37A is connected to basically on the electric conductor 20A of cable module positive input end by electric conductor 20C, so the voltage that is added to comparer 37A positive input terminal has been represented the actual positive voltage that is added on the cable module 18.The negative input end of comparer 37A is connected to the negative output terminal 38E of power amplifier 50, so the output of comparer 37A representative ((+V)-(V-y)), it can be rewritten as (+2V+y).The output of comparer 37A is added to the positive input terminal of comparer 37C, and the output of comparer 37B is added to the negative input end of comparer 37C.Comparer 37C can be that gain is the operational amplifier of 2 (X2), therefore the output of comparer 37C equals+2y, and Here it is between power amplifier positive output end 38D and the cable module, and the voltage drop on the electric conductor 20A adds the voltage drop on the electric conductor 20B between cable module and the power amplifier negative output terminal 38E.
The output of X2 comparer 37C is added to the negative input end of comparer 37D (also can be operational amplifier), and the output of comparer 37B is added to the positive input terminal of comparer 37D, make the output of comparer 37D just equal+2V, that is, be added to voltage amplitude on the cable module by electric conductor 20A and 20B.The output of comparer 37D is added to the negative input end of operational amplifier 39B.The professional and technical personnel it is to be understood that comparer 37D is with such control power amplifiers 50, make actual being added on the cable module 18, and maintain the substantially the same amplitude of voltage level of selecting to be added to input end 38A with the operator by electric conductor 20C remote sense and voltage that be added to voltage comparator 37A anode.
As shown in Figure 2, can will be commonly referred to " crowbar circuit " circuit be added on power lead 20A and the 20B, near apart from surveying shake ship 12 umbilical cable 20 ends (load end) farthest." extinguishing arc " circuit comprises operational amplifier 30, the latter is connected power lead 20A and 20B by Zener diode 33.The input end of operational amplifier 30 by resistance 34 along separate routes.The output driving transistors 31 of operational amplifier 30." extinguishing arc " effect of circuit is that electric loading when power supply 13 changes and the described voltage spike of clamp may voltage spike occur on power lead 20A and 20B the time at work.
In the present embodiment, electrolytic condenser 32 can be connected the two ends of voltage supply line 20A and 20B.Utilized configuration shown in Figure 2 to be determined by experiment: connect module (among Fig. 1 18) when trailing cable is worked, the instantaneous increase of electric loading can cause voltage drop, and the amplitude of described voltage drop is enough to make one or more modules (among Fig. 1 18) not start.Load end local storage electric charge at inlead 20 can reduce the possibility that this meeting causes the momentary load increase that starts failure.
Another embodiment that is used for the voltage of trailing cable module is added to the impact damper of voltage controller 38 schematically is shown among Fig. 3.At the load end of power lead 20A and 20B, in remote sense unit 24, analog to digital converter (ADC) 42 is connected to power lead 20A and 20B two ends usually, so that produce numeric word corresponding near the power lead 20A electric loading (module 18) and 20B both end voltage.The output of ADC 42 can be connected to telemetry transmitter (TX) 40, and TX40 formats numeric word, is used for the communication (signal wire can be an optical fiber, or as shown in Figure 3, can comprise power lead 20A and 20B) along signal wire.In certain embodiments, telemetry transmitter 40 can be connected to the remote unit (not shown), is used for sending to from the signal of various places shakes sensors (figure does not illustrate respectively) surveying shake ship (among Fig. 1 10).
In the present embodiment, telemetry receiver 44 can be connected to power lead 20A and 20B near power supply place (13 among Fig. 2).In other embodiments, telemetry receiver 44 can be connected to the optical fiber (not shown).The output of telemetry receiver 44 can be connected to digital to analog converter (DAC) 46, so that the output of aanalogvoltage control signal is provided.Aanalogvoltage control signal output can be connected to the voltage controling input end 38B of voltage controller, the use of described aanalogvoltage control signal output basically with illustrated identical of the described embodiment of Fig. 2 just.The described embodiment of buffer circuits, the same with the aforementioned buffers embodiment of circuit, provide power supply near voltage signal corresponding near the voltage existing electric loading.Like this, the variation of electric loading (for example being switched on or switched off each module (18 among Fig. 1)) can be compensated by the output of control power supply 13, so that keep selected voltage at the load end (20 among Fig. 1) of inlead.
Can provide improved voltage adjustment according to power supply embodiment of the present invention under variable load condition, these conditions comprise must having quite long distance between power supply and the electric loading and must minimize the power lead diameter from the power supply to the load or thickness etc.The seismic sensor system of use power supply of the present invention can improve the performance of remote signal processing and telemetry module, can use the electric conductor of Billy with the used more minor diameter of this professional known power source simultaneously on the umbilical cord inlead.
Though the invention has been described in conjunction with the embodiment of limited quantity, the professional and technical personnel can design other embodiment under the prerequisite that does not deviate from the spirit and scope of the present invention after having read content of the present invention.So scope of the present invention should only be subjected to the restriction of appended claims.
Claims (12)
1. remote sensing regulated voltage power supply system, it comprises:
Controllable output power, it has the control input end, described power supply output-controlled in the voltage signal that is added to described control input end;
Power lead, it is connected to electric loading the power take-off of described power supply;
Pressure-active element, it is connected near at least one power lead the described load; And
Buffer circuits, it is connected between described pressure-active element and the described control input end.
2. power supply as claimed in claim 1 wherein also comprises the clamp circuit that is connected between described electric loading and the described power lead.
3. power supply as claimed in claim 1 wherein also comprises the charge storage device that is connected near the power lead of described electric loading.
4. power supply as claimed in claim 3, wherein said charge storage device comprises electrolytic condenser.
5. power supply as claimed in claim 1, wherein said buffer circuits comprises operational amplifier, an input end of described operational amplifier is connected to an end of voltage reading outlet, and the other end of described voltage reading outlet is connected near one of power lead the described electric loading.
6. power supply as claimed in claim 1, wherein said buffer circuits comprises: analog to digital converter, it is connected near the power lead of described load; Telemetry transmitter, it is connected to the output terminal of described analog to digital converter; And telemetry receiver, it is arranged near the described power supply, and is connected to described control input end during the output services of described telemetry receiver.
7. oceanic earthquake sensing system, it comprises:
The oceanic earthquake trailing cable is introduced umbilical cord, the one end is connected to surveys the shake ship, the other end of described inlead is connected at least one trailing cable, and described trailing cable comprises a plurality of signal processing modules that are arranged in along on the spaced positions from each other of described trailing cable; And
Be arranged on the controllable output power on the described survey shake ship, described power supply comprises:
Controllable output power, it has the control input end, described power supply output-controlled in the voltage signal that is added to described control input end;
Power lead, it is connected to the power input end of described module the power take-off of described power supply;
Pressure-active element, it is connected near at least one power lead one of described module; And
Buffer circuits, it is connected between described pressure-active element and the described control input end.
8. system as claimed in claim 7 wherein also comprises the clamp circuit that is connected between described electric loading and the described power lead.
9. system as claimed in claim 7 wherein also comprises the charge storage device that is connected near the power lead of described electric loading.
10. system as claimed in claim 9, wherein said charge storage device comprises electrolytic condenser.
11. system as claimed in claim 7, wherein said buffer circuits comprises operational amplifier, the input end of described operational amplifier is connected to an end of voltage reading outlet, and the other end of described voltage reading outlet is connected near one of power lead the described electric loading.
12. system as claimed in claim 7, wherein said buffer circuits comprises: analog to digital converter, and it is connected near the power lead of described load; Telemetry transmitter, it is connected to the output terminal of described analog to digital converter; And telemetry receiver, it is arranged near the described power supply, and is connected to described control input end during the output services of described telemetry receiver.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US59818104P | 2004-08-02 | 2004-08-02 | |
| US60/598181 | 2004-08-02 | ||
| US10/954066 | 2004-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1734386A true CN1734386A (en) | 2006-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510091907 Pending CN1734386A (en) | 2004-08-02 | 2005-08-02 | Remote sensing regulated voltage power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9970962B2 (en) | 2014-09-16 | 2018-05-15 | Industrial Technology Research Institute | Non-contact type voltage sensor for dual-wire power cable and method for compensating installation position variation thereof |
-
2005
- 2005-08-02 CN CN 200510091907 patent/CN1734386A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9970962B2 (en) | 2014-09-16 | 2018-05-15 | Industrial Technology Research Institute | Non-contact type voltage sensor for dual-wire power cable and method for compensating installation position variation thereof |
| US10261112B2 (en) | 2014-09-16 | 2019-04-16 | Industrial Technology Research Institute | Non-contact type voltage sensor for dual-wire power cable and method for compensating installation position variation thereof |
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