CN205103411U - Electromagnetic type controlled source system control equipment - Google Patents
Electromagnetic type controlled source system control equipment Download PDFInfo
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- CN205103411U CN205103411U CN201520861604.5U CN201520861604U CN205103411U CN 205103411 U CN205103411 U CN 205103411U CN 201520861604 U CN201520861604 U CN 201520861604U CN 205103411 U CN205103411 U CN 205103411U
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Abstract
The utility model belongs to the adaptive control field specifically is an electromagnetic type controlled source system control equipment. Including a scanning signal controller, power amplifier is connected to the power control output of scanning signal controller, and power amplifier's an output and a vibration exciter are connected, and the vibration exciter is located the top of a base plate, and an acceleration sensor is connected to a vibration exciter top loading counter weight on the base plate, acceleration sensor's output is connected to the scanning signal controller, and the output and the seismic data record appearance of scanning signal controller are connected, and on output that seismic data took notes the appearance was connected to an earthquake waveform display ware, another output number of pass of earthquake waveform display ware was on according to line connection a to wave detector. The accurate control of this novel frequency that realizes scanning signal, range and phase place. The power amplifier of combination system, vibration exciter and basic isotructure can realize that the power output of electromagnetism controlled source in shallow layer prospecting obtains best transmission.
Description
Technical field
The utility model belongs to adaptive control field, for electromagnetic type earthquake controllable earthquake focus system, is specially a kind of electromagnetic type earthquake controllable earthquake focus system opertaing device.
Background technology
Focus is the important component part of seismic exploration technique, and be the source of seismic signal, the accuracy of seismic exploration has inseparable relation with the signal quality of focus.The focus be applied at present in seismic prospecting is of a great variety, mainly comprises explosive source, weight focus, pound seismic sources, fluid pressure type vibroseis and electromagnetic controllable seismic source etc.Vibroseis uses the most successful a kind of non-explosive source up to now, become in seismic exploration in the world and replaced the main focus of the one of explosive source.Researchist mainly expands further investigation to fluid pressure type vibroseis, its system model also comparatively perfect both at home and abroad at present, and the development of electromagnetic controllable seismic source is then relatively late.Because electromagnetic type vibroseis is mainly used in shallow seismic exploration, its power output is little, depth of exploration is shallow, and under often working in field geographical conditions complicated and changeable, therefore in order to make limited power output obtain best transmission, the control research of electromagnetic controllable seismic source system is just seemed very meaningful.
Utility model content
The purpose of this utility model is just for above-mentioned the deficiencies in the prior art, a kind of electromagnetic type earthquake controllable earthquake focus system opertaing device is provided, under the prerequisite ensureing electromagnetic controllable seismic source steady operation, in order to the system power output making it limited obtains best transmission, thus ensure the accuracy of seismic exploration.
The utility model is achieved in that a kind of electromagnetic type earthquake controllable earthquake focus system opertaing device, comprise one scan signal controller, the power control output of sweep signal controller connects power amplifier, the output terminal of power amplifier is connected with a vibrator, vibrator is positioned at the top of a substrate, a counterweight is loaded above vibrator, substrate connects an acceleration transducer, the output terminal of described acceleration transducer is connected to sweep signal controller, the output terminal of sweep signal controller is connected with a seismic data recorder, the output terminal of seismic data recorder is connected on a seismic waveshape display, another output terminal of seismic waveshape display is connected on a wave detector by data line.
Further, be provided with the frequency sweep control signal with special parameter that card generation occurs signal in sweep signal controller, this control signal is amplified by power amplifier.
Further, there is card and comprise the clock crystal oscillator device, direct digital synthesiser, storer and the signal amplitude regulating circuit that connect successively in described signal, the frequency produced via clock crystal oscillator device is stored in storer after direct digital synthesiser synthesis, through signal amplitude regulating circuit output signal, described direct digital synthesiser and controller control output frequency by data cube computation by controller.
Further, described direct digital synthesiser comprises reference frequency source, phase accumulator, wave memorizer, D/A converter and low-pass filter, wherein phase accumulator, wave memorizer, D/A converter and low-pass filter connect successively, be connected to clock crystal oscillator device by phase accumulator, described reference frequency source is connected with phase accumulator and D/A converter provides sample frequency.
The utility model compared with prior art, beneficial effect is: the utility model is on the basis of original vibroseis technique, for the system architecture of electromagnetic controllable seismic source and the technical characterstic Liquified gas tanker in conjunction with actual production, adopt direct digital synthesiser to devise multifunctional signal card, achieve the accurate control of the frequency of sweep signal, amplitude and phase place.Coupling system power amplifier, vibrator and the structure such as basic, can realize the power output of electromagnetic controllable seismic source in shallow-layer geologic prospecting and obtain best transmission, improves precision and the accuracy of exploration, have positive effect to the development of vibroseis.
Accompanying drawing explanation
The device structure schematic diagram that Fig. 1 the utility model embodiment provides;
The signal generation card theory diagram that Fig. 2 the utility model embodiment provides;
The direct digital synthesiser theory diagram that Fig. 3 the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
See Fig. 1, a kind of electromagnetic type earthquake controllable earthquake focus system opertaing device, comprise one scan signal controller, the power control output of sweep signal controller connects power amplifier, the output terminal of power amplifier is connected with a vibrator, vibrator is positioned at the top of a substrate, a counterweight is loaded above vibrator, substrate connects an acceleration transducer, the output terminal of described acceleration transducer is connected to sweep signal controller, the output terminal of sweep signal controller is connected with a seismic data recorder, the output terminal of seismic data recorder is connected on a seismic waveshape display, another output terminal of seismic waveshape display is connected on a wave detector by data line.The frequency sweep control signal with special parameter that card generation is occurred by power amplifier for signal in sweep signal controller zooms into power signal, and drives vibrator and coupled substrate to produce vibration to underground earthquake-wave-exciting; Seismic event is received by the seismic data recorder that ground level arranges after underground medium reflection; Meanwhile, sweep signal controller sends seismologic record enabling signal to seismic recording system, seismic data recorder starts record, and the sweep signal that sweep signal controller produces also is got off by seismic data recorder, then the original earthquake data that it and acquisition system obtain is carried out relevant, the relative recording of Seismic Exploration with Vibrator can be formed.
See Fig. 2, be provided with the frequency sweep control signal with special parameter that card generation occurs signal in sweep signal controller, this control signal is amplified by power amplifier.
There is card and comprise the clock crystal oscillator device, direct digital synthesiser, storer and the signal amplitude regulating circuit that connect successively in signal, the frequency produced via clock crystal oscillator device is stored in storer after direct digital synthesiser synthesis, through signal amplitude regulating circuit output signal, described direct digital synthesiser and controller control output frequency by data cube computation by controller.
See Fig. 3, direct digital synthesiser comprises reference frequency source, phase accumulator, wave memorizer, D/A converter and low-pass filter, wherein phase accumulator, wave memorizer, D/A converter and low-pass filter connect successively, be connected to clock crystal oscillator device by phase accumulator, described reference frequency source is connected with phase accumulator and D/A converter provides sample frequency.
In multifunctional signal card, give full play to the thought of Direct Digital (DDS), achieve multi-signal generating function cleverly.As shown in Figure 2, the sinusoidal output Shaping of direct digital synthesiser AD7008 to square wave, the reference frequency source of EEPROM is used it as.The waveforms such as sine wave, triangular wave, square wave, sawtooth wave can be loaded in the EEPROM of 128K, also can load user-defined waveform.Because the output frequency of direct digital synthesiser AD7008 can be changed in real time by Industry Control PC, namely the reference frequency source of EEPROM can change in real time, and the frequency that card output signal occurs such signal just can change as required in real time.
Direct digital synthesiser has that frequency switching time is short, frequency resolution is high and the feature such as phase place change is continuous, but because above DDS technology can only export the signal of single amplitude, be difficult to meet actual scanning requirements of one's work, therefore at the output terminal modelled signal amplitude regulating circuit again of DDS.
When signal is stuck in and realizes sweep signal amplitude adjusted, the digital signal of direct digital synthesiser AD9850 is after the digital-to-analog conversion of DAC0832 and amplifier, by 8 DAC0808, its amplitude is adjusted again, thus the amplitude enabling the signal of signal generation card output carry out 256 grades accurately controls.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. an electromagnetic type earthquake controllable earthquake focus system opertaing device, it is characterized in that, comprise one scan signal controller, the power control output of sweep signal controller connects power amplifier, the output terminal of power amplifier is connected with a vibrator, vibrator is positioned at the top of a substrate, a counterweight is loaded above vibrator, substrate connects an acceleration transducer, the output terminal of described acceleration transducer is connected to sweep signal controller, the output terminal of sweep signal controller is connected with a seismic data recorder, the output terminal of seismic data recorder is connected on a seismic waveshape display, another output terminal of seismic waveshape display is connected on a wave detector by data line.
2. electromagnetic type earthquake controllable earthquake focus system opertaing device as claimed in claim 1, is characterized in that, be provided with the frequency sweep control signal with special parameter that card generation occurs signal in sweep signal controller, this control signal is amplified by power amplifier.
3. electromagnetic type earthquake controllable earthquake focus system opertaing device as claimed in claim 2, it is characterized in that, there is card and comprise the clock crystal oscillator device, direct digital synthesiser, storer and the signal amplitude regulating circuit that connect successively in described signal, the frequency produced via clock crystal oscillator device is stored in storer after direct digital synthesiser synthesis, through signal amplitude regulating circuit output signal, described direct digital synthesiser and controller control output frequency by data cube computation by controller.
4. electromagnetic type earthquake controllable earthquake focus system opertaing device as claimed in claim 3, it is characterized in that, described direct digital synthesiser comprises reference frequency source, phase accumulator, wave memorizer, D/A converter and low-pass filter, wherein phase accumulator, wave memorizer, D/A converter and low-pass filter connect successively, be connected to clock crystal oscillator device by phase accumulator, described reference frequency source is connected with phase accumulator and D/A converter provides sample frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520861604.5U CN205103411U (en) | 2015-11-02 | 2015-11-02 | Electromagnetic type controlled source system control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520861604.5U CN205103411U (en) | 2015-11-02 | 2015-11-02 | Electromagnetic type controlled source system control equipment |
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| CN205103411U true CN205103411U (en) | 2016-03-23 |
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| CN201520861604.5U Expired - Fee Related CN205103411U (en) | 2015-11-02 | 2015-11-02 | Electromagnetic type controlled source system control equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526657A (en) * | 2016-12-28 | 2017-03-22 | 吉林大学 | Driving device of seismic source and seismic wave generating device based on interface compensation |
| US11686869B2 (en) | 2016-12-28 | 2023-06-27 | Jilin University | Seismic vibrator, vibration device and driving apparatus for the same |
-
2015
- 2015-11-02 CN CN201520861604.5U patent/CN205103411U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526657A (en) * | 2016-12-28 | 2017-03-22 | 吉林大学 | Driving device of seismic source and seismic wave generating device based on interface compensation |
| CN106526657B (en) * | 2016-12-28 | 2019-04-09 | 吉林大学 | The driving device of focus and the seismic wave generating device compensated based on interface |
| US11686869B2 (en) | 2016-12-28 | 2023-06-27 | Jilin University | Seismic vibrator, vibration device and driving apparatus for the same |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20161102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |