CN203951250U - The fast charging and discharging supply unit of nulcear magnetic resonance (NMR) water detector - Google Patents

Abstract

The utility model relates to a kind of fast charging and discharging supply unit of nulcear magnetic resonance (NMR) water detector.This device comprises that PC is connected with MCU control module by serial ports, MCU control module is connected with DC-DC high power module through D/A converter, DC-DC high power module connects 24V storage battery, by DC-DC high power module, produce high voltage, DC-DC high power module is connected to commutation circuit module by anti-recoil protective circuit, two outputs of commutation circuit module connect respectively the first storage capacitor and the second storage capacitor, voltage acquisition module gathers the magnitude of voltage of the first storage capacitor and the second storage capacitor, and by A/D converter, connect MCU control module at output.With respect to former single electric capacity, reduced each stack time, reduced the operating time of each pulse square, effectively shortened the time of discharging and recharging, improved operating efficiency.

Description

The fast charging and discharging supply unit of nulcear magnetic resonance (NMR) water detector

Technical field

The utility model belongs to the geophysical prospecting equipment field that utilizes nulcear magnetic resonance (NMR) to detect water content, relates in particular to a kind of fast charging and discharging supply unit of nulcear magnetic resonance (NMR) water detector.

Background technology

MRS method is compared with drilling method, and it is low that it has cost, and the advantages such as non-destructive and high efficiency are compared with other geophysical methods, and MRS is a kind of geophysical exploration method of directly reconnoitring underground water.But it generally needs more than one and a half hours to the Measuring Time of each test point, the impact of testing location on environment, in the serious area of noise jamming, electromagnetic noise interference is stronger, stacking fold will increase thereupon, Measuring Time may be longer, will make like this Efficiency Decreasing of MRS method, affected the popularization of the method.

CN200997000 discloses a kind of ground nuclear magnetic resonance water explorer launcher, this device can produce enough powerful alternating current pulses, form alternating magnetic field and excite the proton in underground water, produce the ground nuclear magnetic resonance water explorer launcher of nmr phenomena.

CN101285895 discloses a kind of " linear current source excitated multi-path receiving ground magnetic nuclear resonance method and system ", utilize transmitter by two emission electrodes of being driven underground the alternating current to your frequency of underground infeed Rameau, by changing the distance of electrode and the size of electric current, produce the different magnetic field that excites; Disconnect exciting field, at the hydrogen proton being excited, screw in normal equilibrium state process, by high-sensitivity probe group, receive the signal that is exponential damping law; By signal transmssion line, send described signal to receiver, then send to signal to process and imaging system the signal of described receiver reception, carry out the processing such as preliminary treatment, denoising, inverting and imaging of signal.This invention can provide the meticulous prospecting of underground small size; It is high that multiple tracks receives operating efficiency, and space exploration scope is large, is conducive to the features such as 3-d inversion imaging; Line power supply excites, and construction is simple flexibly;

CN101251607 discloses a kind of " system detection, caliberating device and the detection method of ground nuclear magnetic resonance water explorer device ".Host computer is connected with nulcear magnetic resonance (NMR) analog signal generator, System self-test measurement unit and nulcear magnetic resonance (NMR) water detection instrument respectively through communication bus.Ground nuclear magnetic resonance water explorer system detects, scaling method comprises: ground nuclear magnetic resonance water explorer system detects, caliberating device is from detecting, ground nuclear magnetic resonance water explorer key parameter is demarcated, ground nuclear magnetic resonance water explorer noise compacting ability detection and demarcation and ground nuclear magnetic resonance water explorer excitation pulse square scanning process detect, realized in laboratory testing under the performance index simulation field condition of nulcear magnetic resonance (NMR) water detection instrument and system calibrating to instrument, each nulcear magnetic resonance (NMR) water detection instrument is tested fully before carrying out field work, to guarantee stability and the reliability of instrument field work, improve field work efficiency, reduce field work cost.

CN103033849A discloses a kind of " with multichannel nulcear magnetic resonance (NMR) water detection appratus and the outdoor operation method thereof of reference coil ", running parameter by allocation of computer transmitter and each receiver, the mode of operation of each receiver is switched between can and being with reference to Nuclear Magnetic Resonance Measurement pattern in Nuclear Magnetic Resonance Measurement pattern, each receiver all can connect a receiving coil and a reference coil, choosing of reference coil number can be determined according to local environment noise level, can connect at most 8 reference coils, when use is surveyed with the multichannel nulcear magnetic resonance (NMR) water detection appratus of reference coil, by self-adapted noise elimination algorithm, obtained NMR signal data are carried out to denoising Processing, by multi-channel measurement mode, realize the two-dimensional detection to body of groundwater, when effectively improving the lateral resolution of surveying, also improved the signal to noise ratio of NMR signal, be conducive to compared with overall situation Xia Duice district, carry out nulcear magnetic resonance (NMR) detection with noise under complex landform condition.

Above method has all realized the charge function to nuclear magnetic resonance apparatus emission system, but all adopt power supply to single storage capacitor charging method, can only wait for that this storage capacitor has charged and just can launch next time afterwards, in actual detection process, emission system is whole consuming time longer, and operating efficiency is limited.

Utility model content

The purpose of this utility model is exactly for above-mentioned the deficiencies in the prior art, a kind of fast charging and discharging supply unit of nulcear magnetic resonance (NMR) water detector is provided, by increasing a storage capacitor and a commutation circuit to reach alternately discharging and recharging of two electric capacity, shorten the time of stack each time, shorten the time of each pulse square, and then shorten nulcear magnetic resonance (NMR) water detector in the needed operating time of each measuring point, increase work efficiency.

The utility model is to realize like this, the sniffer that a kind of quick power supply of nulcear magnetic resonance (NMR) water detector discharges and recharges, this device discharges by radiating circuit, this radiating circuit comprises PC 1, MCU control module 3, DC-DC high power module 5, 24V storage battery 12, A/D converter 6, voltage acquisition module 7, anti-recoil protective circuit 8, commutation circuit module 9, the first storage capacitor 10 and the second storage capacitor 11, wherein PC 1 is connected with MCU control module 3 by serial ports 2, MCU control module 3 is connected with DC-DC high power module 5 through D/A converter 4, on DC-DC high power module 5, connect, 24V storage battery, by DC-DC high power module 5, produce high voltage, DC-DC high power module 5 is connected to commutation circuit module 9 by anti-recoil protective circuit 8, two outputs of commutation circuit module 9 connect respectively the first storage capacitor 10 and the second storage capacitor 11, voltage acquisition module 7 gathers the voltage of the first storage capacitor 10 and the second storage capacitor 11, and by A/D converter 6, connect MCU control module 3 at output.

Further, commutation circuit module 9 comprises single-chip microcomputer, CPLD, 485 communication modules, the first drive circuit, the second drive circuit, the first switching device shifter and the second switching device shifter, wherein single-chip microcomputer is connected with PC by serial ports by connecting 485 communication modules, single-chip microcomputer connects CPLD, two outputs by CPLD connect respectively the first drive circuit and the second drive circuit, by the first drive circuit, connect the first switching device shifter, by the second drive circuit, connect the second switching device shifter.

The utility model compared with prior art, beneficial effect is: the utility model is according to nuclear magnetic resonance principle, adopt the underground water of the nulcear magnetic resonance (NMR) that two storage capacitors launch to survey, alternately be connected on H bridge road, with respect to the method for former single electric capacity, reduced each stack time, reduced the operating time of each pulse square, effectively shorten the time of discharging and recharging, improved operating efficiency.For Nuclear Magnetic Resonance Measurement underground water provides advantage, shorten the operating time under adverse circumstances.Reduce the required human and material resources of surveying work.

Accompanying drawing explanation

Fig. 1 is the device structure schematic diagram that the utility model embodiment provides;

Fig. 2 is the structural representation of the commutation circuit module that provides of the utility model embodiment.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.

As shown in Figure 1, the sniffer that a kind of quick power supply of nulcear magnetic resonance (NMR) water detector discharges and recharges, this device discharges by radiating circuit, this radiating circuit comprises PC 1, MCU control module 3, what adopt is that model is STC89C54RD+, DC-DC high power module 5, 24V storage battery 12, anti-recoil protective circuit 8, commutation circuit module 9, the first storage capacitor 10 and the second storage capacitor 11, wherein PC 1 is connected with MCU control module 3 by serial ports 2, MCU control module 3 is connected with DC-DC high power module 5 through D/A converter 4, on DC-DC high power module 5, connect, 24V storage battery, by DC-DC high power module 5, produce high voltage, DC-DC high power module 5 is connected to commutation circuit module 9 by anti-recoil protective circuit 8, two outputs of commutation circuit module 9 connect respectively the first storage capacitor 10 and the second storage capacitor 11, , model is the voltage that the voltage acquisition module 7 of VSM025A gathers the first storage capacitor 10 and the second storage capacitor 11, and by A/D converter 6, connect MCU control module 3 at output, anti-recoil protective circuit 8 is diode, current-limiting resistance and current-limiting inductance are composed in series.Because the maximum output voltage of DC-DC high power module is 400V, maximum current is 2A, and diode is used for preventing after charging finishes, and capacitive energy is counter fills the module to DC-DC, and current-limiting resistance and inductance are excessive for Limited Current.

As shown in Figure 2, commutation circuit module 9 comprises that model is the single-chip microcomputer of STC12C5408AD, CPLD, 485 communication modules, the first drive circuit, the second drive circuit, the first switching device shifter and the second switching device shifter that model is EPM1270GT144C5N, wherein single-chip microcomputer is connected with PC by serial ports by connecting 485 communication modules, single-chip microcomputer connects CPLD, two outputs by CPLD connect respectively the first drive circuit and the second drive circuit, by the first drive circuit, connect the first switching device shifter, by the second drive circuit, connect the second switching device shifter.

The course of work of installing in the present embodiment is:

PC 1 is transferred to MCU control module 3 by serial ports 2 by the voltage control word of host computer setting, set inceptive impulse square and charging voltage, MCU control module 3 is connected with D/A converter 4, through D/A converter 4, charging voltage is converted to analog quantity, for the charging voltage of DC-DC high power module 5 is set, through DC-DC high power module 5, produce set high voltage, this high voltage is given the first storage capacitor 10 and the second storage capacitor 11 chargings through anti-recoil protective circuit 8 to commutation circuit module 9, select the first storage capacitor 10 to launch, after the first storage capacitor 10 electric discharge transmittings, the transmitting of discharging of the second storage capacitor 11, meanwhile the first storage capacitor 10 is charged, after this process finishes, the first storage capacitor 10 is launched again, the second storage capacitor 11 charges, by that analogy, two storage capacitors hocket and launch and charging.When a storage capacitor battery has fired, voltage value signal turns back to the collection of A/D module, enters charged state, and another enters emission state.24V storage battery 12 is power supplies of DC-DC high power module 5, and the charging and discharging state of storage capacitor arrives A/D module 6 through voltage acquisition module 7, and then feeds back to MCU control module 3.

The voltage value signal of storage capacitor turns back to MCU control module by voltage acquisition conversion module, MCU control module judges, compare with the magnitude of voltage of setting, judge that this storage capacitor enters charged state or emission state, state information is uploaded to PC, PC sends control word to commutation circuit module, and commutation circuit module is switched corresponding drive circuit.PC 1 is write into control word by 485 communication modules to single-chip microcomputer, CPLD through serial ports 2 and is sent control signal.The first storage capacitor 10 is after carrying out charging process, nulcear magnetic resonance (NMR) water detector starts to launch gatherer process, the ready inverse signal of charging sends and feeds back signal to MCU control module through A/D converter 6, PC1 machine switches the second storage capacitor 11 by 485 communication modules to single-chip microcomputer, CPLD again and charges, after charging process, MCU control module receives the collection settling signal after storage capacitor 10 transmittings, and the second storage capacitor 11 is launched collection discharge process.So circulation.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.

Claims (2)

1. the fast charging and discharging supply unit of a nulcear magnetic resonance (NMR) water detector, it is characterized in that, this device comprises PC (1), MCU control module (3), D/A converter (4), DC-DC high power module (5), 24V storage battery (12), A/D converter (6), voltage acquisition module (7), anti-recoil protective circuit (8), commutation circuit module (9), the first storage capacitor (10) and the second storage capacitor (11), wherein PC (1) is connected with MCU control module (3) by serial ports (2), MCU control module (3) is connected with DC-DC high power module (5) through D/A converter (4), the upper 24V storage battery that connects of DC-DC high power module (5), by DC-DC high power module (5), produce high voltage, DC-DC high power module (5) is connected to commutation circuit module (9) by anti-recoil protective circuit (8), two outputs of commutation circuit module (9) connect respectively the first storage capacitor (10) and the second storage capacitor (11), voltage acquisition module (7) gathers the voltage of the first storage capacitor (10) and the second storage capacitor (11), and by A/D converter (6), connect MCU control module (3) at output.

2. according to the fast charging and discharging supply unit of nulcear magnetic resonance (NMR) water detector claimed in claim 1, it is characterized in that, commutation circuit module (9) comprises single-chip microcomputer, CPLD, 485 communication modules, the first drive circuit, the second drive circuit, the first switching device shifter and the second switching device shifter, wherein single-chip microcomputer is connected with PC by serial ports by connecting 485 communication modules, single-chip microcomputer connects CPLD, two outputs by CPLD connect respectively the first drive circuit and the second drive circuit, by the first drive circuit, connect the first switching device shifter, by the second drive circuit, connect the second switching device shifter.