CN2595079Y - Assembled luminous field source for transient electromagnetic method - Google Patents
Assembled luminous field source for transient electromagnetic method Download PDFInfo
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- CN2595079Y CN2595079Y CN 01257200 CN01257200U CN2595079Y CN 2595079 Y CN2595079 Y CN 2595079Y CN 01257200 CN01257200 CN 01257200 CN 01257200 U CN01257200 U CN 01257200U CN 2595079 Y CN2595079 Y CN 2595079Y
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- current
- power supply
- utility
- field source
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Abstract
The utility model relates to a combined luminous field source for transient electromagnetic method, which belongs to the technical field of the application of geophysical exploration. The utility model changes a DC low voltage power supply into a low voltage high frequency AC current by an oscillator which forms a high voltage high frequency AC current through voltage rising. The high voltage high frequency AC current forms a high voltage DC power supply through rectification, and the high voltage DC power supply is used as a storage capacitor power supply which provides power for a power supply circuit through electronic switch control. The utility model has the advantages that a large instantaneous current can be obtained, average power consumption of the power supply is not large, and the utility model can achieve superposed effect of a plurality of waveshapes by the combination of a plurality of charging and discharging capacitors. Consequently, the utility model achieves the purposes of increasing exploration depth, pressing various interferences, increasing signal to noise ratio, improving data quality and ensuring exploration effect.
Description
[technical field] the utility model belongs to applied geophysics exploration, engineer geological prospecting technical field.
The field source system of the transient electromagnetic method that [background technology] is the most conventional switches to unidirectional or two-way seemingly square pulse electric current to loop power supply with control and switch with DC power supply.The tradition transient electromagnetic method direct current---though DC converting has been used decades at home and abroad, but the geophysics worker is puzzled by the power-supply system of heaviness always for a long time, must increase power in order to increase depth of exploration on the one hand, just need heavy power-supply system and increase power, and then make this system very huge, the area that can not be fit to current condition difficulties such as mountain area, reduce the depth of exploration that system power does not reach hope again on the other hand, can not satisfy the needs of seeking deep orebody.
[summary of the invention] the purpose of this utility model provides the geological prospecting power-supply system that use in a kind of suitable mountain area.
The utility model one transition magnetotelluric method combination flash-mode field source system class is like the principle of camera flashlamp, charge to electric capacity earlier, provide exciting current by electric capacity to current supply circuit again, because the internal resistance of electric capacity is very little and capacity is very big, thereby the electric current of exportable hard intensity, can form powerful excitation field source, to reach the purpose of geophysical exploration.
The utility model is that low pressure high-capacity direct current power supply (as lead-zinc accumulator) is reverse into low pressure high frequency square wave electric current by inverter Q1, the positive pole of DC power supply links to each other with the collector electrode of inversion pipe, and the emitter of the other end and inversion pipe links to each other, low pressure high frequency square wave electric current becomes the high voltagehigh frequency power supply after transformer T1 boosts, this electric current is by two secondary coil outputs of transformer T1, the output of two secondary coils of transformer respectively with two rectifier bridge D1, the ac input end of D2 links to each other, rectifier bridge D1, two dc output ends of D2 respectively with high-voltage filtering capacitor C1, the positive pole of C2 links to each other with negative pole, wherein be in series with filter resistance R1 between the positive pole of dc output end and filter capacitor, R2, oudin's current form high voltage direct current behind rectifying and wave-filtering; High-voltage DC power supply charges to storage capacitor earlier and carries out energy storage, provides exciting current by storage capacitor to current supply circuit again.
Inverter is a dc-ac conversion circuit, and stepup transformer is a high frequency transformer, and the high pressure storage capacitance is tantalum electric capacity or electrochemical capacitor, controller be electronic switch by computer control, current supply circuit is for for load system.
Described low-voltage dc power supply voltage is 6～12V, and low pressure high-frequency current frequency is 1024Hz, and high-frequency high-voltage current voltage is 400～800V, and high direct voltage voltage is 800～1000V.
The utility model is because the capacity of storage capacitor is very big, and the internal resistance of electric capacity is very little, thereby may export moment and can reach hundreds of amperes of pulse high currents, and its advantage is energy/weight ratio height, the power supply lighting, and can provide power stronger high-power excitation field source; When obtaining very big transient current, and the average power consumption of power supply is little, thereby makes that whole power-supply system is light.The utility model adopts combinations such as parallel connection that combination flash-mode field source system can be by a plurality of charge and discharge capacitances, series connection, reach the effects such as stack, amplification, time-delay decay of a plurality of waveforms, increase depth of exploration, suppress various interference, increase signal to noise ratio, improve the quality of data, guarantee the purpose of exploration effects thereby reach.For carrying out the power supply that the transition magnetotelluric method provides a kind of portable and effective in the field.
[description of drawings]
Fig. 1: the utility model functional-block diagram;
Fig. 2: the utility model circuit diagram;
Fig. 3: the symmetrical power supply wave shape figure that the utility model produces.
[embodiment]
Below in conjunction with accompanying drawing the utility model is further described.
Machine program control as calculated, controller are the mode and the asynchronism(-nization) of electronic switch 5 connections and switch, reservoir capacitor C
1, C
2The following excitation waveform electric current of generation capable of being combined.
A capacitor C
1Discharge can produce the direct impulse ripple separately;
B capacitor C
2Discharge can produce the reverse impulse ripple separately;
C capacitor C
1, C
2The independent discharge of different sequential just can produce---the reverse impulse ripple;
D capacitor C
1, C
2Series connection can produce the multiplication of voltage unidirectional pulse ripple that voltage is single capacitor;
E capacitor C
1, C
2Parallel connection, can produce discharge capacity is the current impulse ripple of 2 times of single electric capacity;
F capacitor C
1, C
2Can not produce special impulse wave with phase discharge in succession simultaneously.
The utility model has been applied to (as engineering geophysics detection, dam hidden danger detection, ocean spectrum detection) in the multinomial geophysical exploration method, and this field source waveform has good bi-directional symmetrical.Utilize this power supply to carry out work and can eliminate direct current, 50Hz and Harmonic Interference thereof, improve signal to noise ratio, guarantee exploration effects.
Claims (3)
1. combination flash-mode field source that is used for transient electromagnetic method, it is characterized in that: the utility model is that low pressure high-capacity direct current power supply is reverse into low pressure high frequency square wave electric current by inverter Q1, the positive pole of DC power supply links to each other with the collector electrode of inversion pipe, and the emitter of the other end and inversion pipe links to each other, low pressure high frequency square wave electric current becomes the high voltagehigh frequency power supply after transformer T1 boosts, this electric current is by two secondary coil outputs of transformer T1, the output of two secondary coils of transformer respectively with two rectifier bridge D1, the ac input end of D2 links to each other, rectifier bridge D1, two dc output ends of D2 respectively with high-voltage filtering capacitor C1, the positive pole of C2 links to each other with negative pole, wherein be in series with filter resistance R1 between the positive pole of dc output end and filter capacitor, R2, oudin's current form high voltage direct current behind rectifying and wave-filtering; High-voltage DC power supply charges to storage capacitor earlier and carries out energy storage, provides exciting current by storage capacitor to current supply circuit again.
2. field source according to claim 1, it is characterized in that: inverter is a dc-ac conversion circuit, and stepup transformer is a high frequency transformer, and the high pressure storage capacitance is tantalum electric capacity or electrochemical capacitor, controller be electronic switch by computer control, current supply circuit is for for load system.
3. field source according to claim 1 is characterized in that: control switch adopts different control modes, finishes the combinations such as parallel connection, series connection of a plurality of charge and discharge capacitances, can produce different current waveforms on current supply circuit, generation different wave excitation field source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01257200 CN2595079Y (en) | 2001-10-22 | 2001-10-22 | Assembled luminous field source for transient electromagnetic method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01257200 CN2595079Y (en) | 2001-10-22 | 2001-10-22 | Assembled luminous field source for transient electromagnetic method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2595079Y true CN2595079Y (en) | 2003-12-24 |
Family
ID=33666015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01257200 Expired - Fee Related CN2595079Y (en) | 2001-10-22 | 2001-10-22 | Assembled luminous field source for transient electromagnetic method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2595079Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100495074C (en) * | 2006-10-08 | 2009-06-03 | 吉林大学 | Nuclear magnetic resonance and transient electromagnetic combined instrument and method |
| CN102147484A (en) * | 2011-02-17 | 2011-08-10 | 长江大学 | High-power downhole electromagnetic pulse transmission device |
| CN103207411A (en) * | 2013-03-15 | 2013-07-17 | 北京工业大学 | Electromagnetic exploration transmitting system based on super capacitor energy storage |
| CN111809971A (en) * | 2020-07-16 | 2020-10-23 | 深圳市麦驰安防技术有限公司 | Unlocking drive circuit, electric control lock and magnetic lock |
-
2001
- 2001-10-22 CN CN 01257200 patent/CN2595079Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100495074C (en) * | 2006-10-08 | 2009-06-03 | 吉林大学 | Nuclear magnetic resonance and transient electromagnetic combined instrument and method |
| CN102147484A (en) * | 2011-02-17 | 2011-08-10 | 长江大学 | High-power downhole electromagnetic pulse transmission device |
| CN102147484B (en) * | 2011-02-17 | 2012-08-29 | 长江大学 | High-power downhole electromagnetic pulse transmission device |
| CN103207411A (en) * | 2013-03-15 | 2013-07-17 | 北京工业大学 | Electromagnetic exploration transmitting system based on super capacitor energy storage |
| CN103207411B (en) * | 2013-03-15 | 2015-08-05 | 北京工业大学 | A kind of electromagnetic survey emission coefficient based on ultracapacitor energy storage |
| CN111809971A (en) * | 2020-07-16 | 2020-10-23 | 深圳市麦驰安防技术有限公司 | Unlocking drive circuit, electric control lock and magnetic lock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |