CN103197288B - Misering range radar in drilling and signal generator thereof - Google Patents
Misering range radar in drilling and signal generator thereof Download PDFInfo
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- CN103197288B CN103197288B CN201310128108.4A CN201310128108A CN103197288B CN 103197288 B CN103197288 B CN 103197288B CN 201310128108 A CN201310128108 A CN 201310128108A CN 103197288 B CN103197288 B CN 103197288B
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Abstract
Disclosed are a misering range radar in drilling and a signal generator thereof. The signal generator comprises a high-voltage power supply and a three-stage mono-pulse cascade circuit. The three-stage mono-pulse cascade circuit comprises a first-stage pulse circuit, a second-stage pulse circuit and a third-stage pulse circuit, and further comprises a second-stage triggering unit and a third-stage triggering unit. The signal generator is simple in structure and convenient to manufacture, effective and reasonable cascading is carried out on the base of a mono-pulse generating circuit, three continuous high-voltage pulse signals can be generated, therefore a misering range radar system can obtain effective, clear and large-amplitude received signals, resolution ratios of the system are improved, and post data processing is convenient.
Description
Technical field
The present invention relates to the equipment with probing its interphase of survey and reservoir thickness for oil, coal and other ore deposit reservoirs, relate in particular to a kind of with probing layer range radar and signal generator thereof.
Background technology
Current, at oil, in the exploitation of rock gas and coal-seam gas in order to obtain larger production capacity, often pass through horizontal well drilling technology, the pit shaft track that rig gets out is remained in hydrocarbon zone and coal seam, but pit shaft track cannot remain in hydrocarbon zone and coal seam completely in actual construction, its reason is also not have quantitatively to measure method and the technology at hydrocarbon zone and coal seam interface and thickness at present, can measure hydrocarbon zone although adopt the method for gamma and resistivity, the difference of coal seam cap rock upper and lower with it, but this is only judge qualitatively and cannot quantitatively or relatively accurately measure the distance of pit shaft track apart from up-and-down boundary face.Scheme is that range radar is integrated in boring in instrument at present, and it is constantly measured with boring instrument distance interfacial with it in drilling course.
The normally used kind of signal source of current existing range radar has: single pulse signal, continuous wave signal, pulse modulated wave signal.Fig. 3 is that monopulse produced circuit theory diagrams in the past, its principle of work that produces high-voltage pulse is, the supply voltage VH of snowslide pipe Q1 is between Uceo and Ucbo, make snowslide pipe be operated in critical avalanche condition, when trigger pip unit sends a square wave trigger pip, after the differentiating circuit of C2 and R3 composition, be shaped as the signal of a low pressure, nanosecond.When this signal enters into after Q1, make it that avalanche breakdown occur, the avalanche breakdown electric current that produces moment, makes snowslide pipe Q1 and storage capacitor C1 form respectively current return with resistance R 2 and interface loaded antenna that P1 connects respectively, shows as and on resistance R 2 and antenna, produces respectively high-voltage pulse signal.The amplitude of this high-voltage pulse signal and pulse width be according to supply voltage HV and element Q1, C1, the selection difference of C2, its variation range can be at tens width to width up to a hundred not etc., pulse width several nanoseconds to tens nanoseconds not etc.
But in above three kinds of signals, be all to use high pressure single pulse signal conventionally in actual ground penetrating radar, although this kind of signal is easier to realize in signal generation and post-processed, the radiation effect of transmitting individual pulse has can't be obtained compared with pulse modulated wave signal.
For this reason, deviser of the present invention is because above-mentioned defect, by concentrating on studies and designing, is comprehensively engaged in for a long time experience and the achievement of related industry for many years, and research and design goes out a kind of with probing layer range radar and signal generator thereof, to overcome above-mentioned defect.
Summary of the invention
The object of the present invention is to provide a kind of with probing layer range radar and signal generator thereof, it is simple in structure, easily manufactured, produce on circuit base and carry out cascade effectively and reasonably at monopulse, can produce 3 continuous high-voltage pulse signals, thereby make to visit layer range radar system and obtain the reception signal more effective, clear, amplitude is larger, improve the resolution and the data that facilitate the later stage of system.
For achieving the above object, the invention discloses a kind of signal generator with probing layer range radar, this signal generator includes high-voltage power supply and three grades of monopulse cascade circuits, these three grades of monopulse cascade circuits comprise first order pulsing circuit, second level pulsing circuit and third level pulsing circuit, it is characterized in that:
This first order pulsing circuit comprises first order differentiating circuit, first order snowslide pipe and first order loop, and this first order differentiating circuit comprises the first electric capacity and the first resistance, and this first order loop comprises the second electric capacity and the second resistance; This second level pulsing circuit comprises second level snowslide pipe and loop, the second level, and this loop, second level comprises the 3rd electric capacity and the 3rd resistance; This third level pulsing circuit comprises third level snowslide pipe and third level loop, and this third level loop comprises the 4th electric capacity and the 4th resistance;
Also include second level trigger element and third level trigger element, this second level trigger element comprise first order snowslide pipe penetrate level and ground between the 5th resistance and the 6th resistance between first order snowslide pipe and second level snowslide pipe, this third level trigger element comprise second level snowslide pipe penetrate the 7th resistance between level and ground and the 8th resistance between second level snowslide pipe and third level snowslide pipe, and the 5th resistance and the 7th resistance are low resistance.
Wherein: the 5th resistance and the 7th resistance are 0.22 ohm.
Also disclose a kind of with probing layer range radar, it is characterized in that: this range radar comprises the first transmitter unit, first signal generator, the first receiving element, first signal processing unit, first signal calculating converting unit, the second transmitter unit, secondary signal generator, the second receiving element, secondary signal processing unit, secondary signal calculating converting unit and trigger pip unit, and this first signal generator and secondary signal generator are the signal generator described in claim 1 or 2.
Wherein: the first transmitter unit is connected to first signal generator, it is 1G-5G emitting antenna oscillator; The first receiving element is 1G-5G receiving antenna oscillator, and first signal processing unit comprises interconnective 1G-5G small signal amplifier and signal filtering and reshaper, and this 1G-5G small signal amplifier is connected to the first receiving element; First calculate converting unit comprise the synchronous and reflection time difference computation processor of interconnective signal and time apart from change-over circuit, the synchronous and reflection time difference computation processor of this signal is connected to signal filtering and reshaper.
Wherein: the second transmitter unit is connected to secondary signal generator, it is 50M-900M emitting antenna oscillator; The second receiving element is 50M-900M receiving antenna oscillator, and secondary signal processing unit comprises interconnective 50M-900M small signal amplifier and signal filtering and reshaper, and this 50M-900M small signal amplifier is connected to the second receiving element; Second calculate converting unit comprise the synchronous and reflection time difference computation processor of interconnective signal and time apart from change-over circuit, the synchronous and reflection time difference computation processor of this signal is connected to signal filtering and reshaper.
Wherein: this trigger pip unit comprises rotary angle transmitter and electromagnetic impulse mission controller.
By said structure, of the present invention have following technique effect with probing layer range radar and signal generation apparatus thereof:
1, can produce compared with the better signal of monopulse pulse signal, make it in the spy layer range radar system that uses original single pulse signal, can detect the more object of deep layer.
2, the validity that ensures covering all sidedly and signal, makes the distance measurement function of radar more comprehensive, and accuracy is higher.
The present invention will be further described in detail by the following specific embodiments, and will be more apparent and obvious to understand further combined with the description of the drawings.
Brief description of the drawings
Fig. 1 has shown the structural representation with probing layer range radar of the present invention's application.
Fig. 2 has shown composition frame chart of the present invention.
Fig. 3 has shown the basic block diagram that in prior art, single pulse signal produces.
Fig. 4 has shown the basic block diagram of the signal generator of three grades of monopulses generation of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The present invention relates to a kind of with probing layer range radar and signal generator thereof, Fig. 1 has shown the whole structural representation with probing layer range radar, and this range radar comprises the first transmitter unit 11, first signal generator 12, the first receiving element 13, first signal processing unit 14, first signal calculating converting unit 17, the second transmitter unit 21, secondary signal generator 22, the second receiving element 23, secondary signal processing unit 24, secondary signal calculating converting unit 27 and trigger pip unit 100.
Wherein, the first transmitter unit 11 is connected to first signal generator 12, and it is 1G-5G emitting antenna oscillator; The first receiving element 13 is 1G-5G receiving antenna oscillator, and first signal processing unit 14 comprises interconnective 1G-5G small signal amplifier 15 and signal filtering and reshaper 16, and this 1G-5G small signal amplifier 15 is connected to the first receiving element 13; First calculate converting unit 17 comprise the synchronous and reflection time difference computation processor 18 of interconnective signal and time apart from change-over circuit 19, the synchronous and reflection time difference computation processor 18 of this signal is connected to signal filtering and reshaper 16.
Wherein, the second transmitter unit 21 is connected to secondary signal generator 22, and it is 50M-900M emitting antenna oscillator; The second receiving element 23 is 50M-900M receiving antenna oscillator, and secondary signal processing unit 24 comprises interconnective 50M-900M small signal amplifier 25 and signal filtering and reshaper 26, and this 50M-900M small signal amplifier 25 is connected to the second receiving element 23; Second calculate converting unit 27 comprise the synchronous and reflection time difference computation processor 28 of interconnective signal and time apart from change-over circuit 29, the synchronous and reflection time difference computation processor 28 of this signal is connected to signal filtering and reshaper 26.
Wherein, this trigger pip unit 100 comprises rotary angle transmitter 101 and electromagnetic impulse mission controller 102.
Thus, whole range radar is found range by the radar of two cover different frequencies, ensures the validity of covering all sidedly and signal, makes the distance measurement function of radar more comprehensive, and accuracy is higher.
Another emphasis of the present invention is that signal generator is wherein designed, this first signal generator 12 is identical with the structure of secondary signal generator 22, referring to Fig. 2, all include high-voltage power supply 1001 and three grades of monopulse cascade circuits 1002, this high-voltage power supply 1001 produces sufficiently high voltage and offers three grades of monopulse cascade circuits 1002, the signal amplitude of generation is shot out by irradiation device.
Referring to Fig. 4, show the concrete structure of signal generator, it comprises first order pulsing circuit, second level pulsing circuit and third level pulsing circuit.
Wherein, this first order pulsing circuit comprises first order differentiating circuit, first order snowslide pipe Q2 and first order loop, and this first order differentiating circuit comprises the first capacitor C 6 and the first resistance R 12, and this first order loop comprises the second capacitor C 3 and the second resistance R 7; This second level pulsing circuit comprises second level snowslide pipe Q3 and loop, the second level, and this loop, second level comprises the 3rd capacitor C 4 and the 3rd resistance R 8; This third level pulsing circuit comprises third level snowslide pipe Q4 and third level loop, and this third level loop comprises the 4th capacitor C 5 and the 4th resistance R 9.
In order to realize three grades of interlocks, the present invention has designed second level trigger element and third level trigger element, this second level trigger element comprise first order snowslide pipe Q2 penetrate level and ground between the 5th resistance R 13 and the 6th resistance R 10 between first order snowslide pipe Q2 and second level snowslide pipe Q3, this third level trigger element comprise second level snowslide pipe Q3 penetrate level and ground between the 7th resistance R 14 and the 8th resistance R 11 between second level snowslide pipe Q3 and third level snowslide pipe Q4, and the 5th resistance R 13 and the 7th resistance R 14 are low resistance, be preferably 0.22 ohm, to realize the trigger action to the second level and the third level.
Thus, when trigger pip becomes signal after C6 and R12, trigger Q2 snowslide phenomenon occurs, at this moment the high-voltage pulse signal that the phenomenon occurring just produces as Fig. 3 pulse-generating circuit is exported to the antenna load of interface P2, in this process, be the R13 of 0.22 ohm owing to there being electric current through resistance, will on R13, produce like this positive pulse trigger pip, this positive pulse trigger pip enters into after the Q3 that is in avalanche condition, also there is above-mentioned situation, also just on the antenna load of interface P2, produced high-voltage pulse; By this process, on R15, produce trigger pip and enter into Q4, in P2 interface antenna, produce high-voltage pulse afterwards.So far,, on the loaded antenna connecing at P2, just can produce successively in time 3 continuous high-voltage pulse signals.
Known by foregoing description, advantage of the present invention is as follows:
1, can produce compared with the better signal of monopulse pulse signal, make it in the spy layer range radar system that uses original single pulse signal, can detect the more object of deep layer.
2, the validity that ensures covering all sidedly and signal, makes the distance measurement function of radar more comprehensive, and accuracy is higher.
In the present invention, applied specific embodiment principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (2)
1. the signal generator with probing layer range radar, this signal generator includes high-voltage power supply and three grades of monopulse cascade circuits, these three grades of monopulse cascade circuits comprise first order pulsing circuit, second level pulsing circuit and third level pulsing circuit, it is characterized in that:
This first order pulsing circuit comprises first order differentiating circuit, first order snowslide pipe and first order loop, and this first order differentiating circuit comprises the first electric capacity and the first resistance, and this first order loop comprises the second electric capacity and the second resistance; This second level pulsing circuit comprises second level snowslide pipe and loop, the second level, and this loop, second level comprises the 3rd electric capacity and the 3rd resistance; This third level pulsing circuit comprises third level snowslide pipe and third level loop, and this third level loop comprises the 4th electric capacity and the 4th resistance;
Also include first order trigger element and second level trigger element, this first order trigger element comprises the 6th resistance between the 5th resistance between the emitter-base bandgap grading of first order snowslide pipe and ground and first order snowslide pipe and second level snowslide pipe, this second level trigger element comprises the 8th resistance between the 7th resistance between the emitter-base bandgap grading of second level snowslide pipe and ground and second level snowslide pipe and third level snowslide pipe, and the 5th resistance and the 7th resistance are low resistance.
2. signal generator as claimed in claim 1, is characterized in that: the 5th resistance and the 7th resistance are 0.22 ohm.
3. one kind with a probing layer range radar, it is characterized in that: this range radar comprises the first transmitter unit, first signal generator, the first receiving element, first signal processing unit, first signal calculating converting unit, the second transmitter unit, secondary signal generator, the second receiving element, secondary signal processing unit, secondary signal calculating converting unit and trigger pip unit, and this first signal generator and secondary signal generator are the signal generator described in claim 1 or 2.
4. as claimed in claim 3ly it is characterized in that: the first transmitter unit is connected to first signal generator with a probing layer range radar, it is 1G-5GHz emitting antenna oscillator; The first receiving element is 1G-5GHz receiving antenna oscillator, and first signal processing unit comprises interconnective 1G-5GHz signal amplifier and signal filtering and reshaper, and this 1G-5GHz signal amplifier is connected to the first receiving element; First signal calculate converting unit comprise the synchronous and reflection time difference computation processor of interconnective signal and time apart from change-over circuit, the synchronous and reflection time difference computation processor of this signal is connected to signal filtering and reshaper.
5. as claimed in claim 3ly it is characterized in that: the second transmitter unit is connected to secondary signal generator with a probing layer range radar, it is 50M-900MHz emitting antenna oscillator; The second receiving element is 50M-900MHz receiving antenna oscillator, and secondary signal processing unit comprises interconnective 50M-900MHz signal amplifier and signal filtering and reshaper, and this 50M-900MHz signal amplifier is connected to the second receiving element; Secondary signal calculate converting unit comprise the synchronous and reflection time difference computation processor of interconnective signal and time apart from change-over circuit, the synchronous and reflection time difference computation processor of this signal is connected to signal filtering and reshaper.
As described in arbitrary in claim 3-5 with a probing layer range radar, it is characterized in that: this trigger pip unit comprises rotary angle transmitter and electromagnetic impulse mission controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310128108.4A CN103197288B (en) | 2013-04-12 | 2013-04-12 | Misering range radar in drilling and signal generator thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310128108.4A CN103197288B (en) | 2013-04-12 | 2013-04-12 | Misering range radar in drilling and signal generator thereof |
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| CN103197288A CN103197288A (en) | 2013-07-10 |
| CN103197288B true CN103197288B (en) | 2014-10-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8207885B2 (en) * | 2007-09-19 | 2012-06-26 | Niitek, Inc. | Adjustable pulse width ground penetrating radar |
| CN101726729B (en) * | 2008-10-16 | 2012-06-20 | 中国矿业大学(北京) | High-precision receiver of geological radar |
| US8353677B2 (en) * | 2009-10-05 | 2013-01-15 | Chevron U.S.A. Inc. | System and method for sensing a liquid level |
| CN202206352U (en) * | 2011-09-08 | 2012-04-25 | 邹爱民 | Serial concatenated nanosecond pulse source based on single-stage avalanche triode |
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Effective date of registration: 20201029 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. Address before: 100083 Xueyuan Road No. 20 drilling Institute control center, Haidian District, Beijing Patentee before: DRILLING RESEARCH INSTITUTE OF CHINA NATIONAL PETROLEUM Co. |
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Effective date of registration: 20230329 Address after: 100120 Xicheng District six paw Kang in Beijing City Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. Patentee after: BEIJING PETROLEUM MACHINERY Co.,Ltd. Address before: 100120 Xicheng District six paw Kang in Beijing City Patentee before: CHINA NATIONAL PETROLEUM Corp. Patentee before: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. |