CN208672813U - A kind of nuclear magnetic resonance water detector transmitter energy management system - Google Patents
A kind of nuclear magnetic resonance water detector transmitter energy management system Download PDFInfo
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- CN208672813U CN208672813U CN201821404832.XU CN201821404832U CN208672813U CN 208672813 U CN208672813 U CN 208672813U CN 201821404832 U CN201821404832 U CN 201821404832U CN 208672813 U CN208672813 U CN 208672813U
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Abstract
A kind of nuclear magnetic resonance water detector transmitter energy management system, including dynamic compensating electric capacity charger, the dynamic compensating electric capacity charger includes battery group unit, control circuit power supply unit, DC-DC booster circuit unit, constant current source unit, signal acquisition unit, isolated location, control unit.The battery group unit connects control circuit power supply unit, and the constant current source unit includes high-power MOS tube, operational amplifier, the first sampling resistor, the first DAC module.Storage capacitor is separately connected the first isolation DC-DC module power source, the second isolation DC-DC module power source, the first sampling resistor.The signal acquisition unit includes hall device, the second sampling resistor, the first conditioning circuit, ADC sampling A/D chip.The utility model can be realized in the transmitter course of work by the dynamic regulation and constant current source output current dynamic regulation of supply voltage, while meeting instrument performance demand, realize the efficient management to capacitor storage energy.
Description
Technical field
The utility model relates to a kind of energy stores administrative skill field, specifically a kind of nuclear magnetic resonance water detector transmitter
Energy Management System is applied to water resource Exploration Domain.
Background technique
To excite to the Hydrogen Proton in underground water, nuclear magnetic resonance water detector transmitter must have the big electricity of instantaneous output
The ability of the electromagnetic pulse of stream, high voltage, in this regard, can be filled by the electrolytic capacitor (energy storage) to high voltage value, large capacity
Electricity reaches predetermined value and then discharges excitation variable winding, to realize that momentary high power exports.
However, using storage capacitor charge and discharge, there are two defects: first, in storage capacitor discharge process, capacitor it is defeated
Voltage and current all can be with time rapid decay out, this great-power electromagnetic pulse signal amplitude that will directly affect excitation declines
Subtract, influences the quality of output waveform.It is asked currently, the transmitter of nuclear magnetic resonance water detector all has output pulse signal amplitude attenuation
It inscribes, default decaying amplitudes think effective not less than 85% in engineering；External commercial apparatus and domestic instrument ignore capacitance fade
The problem of, design is not compensated to it, is to utilize extension firing time to realize the proton polarization degree of equal extent
Or increasing excitation number with the decaying of compensated pulse signal amplitude, this undoubtedly reduces working efficiency.Second, nuclear magnetic resonance is selected
Storage capacitor must be voltage levels, large capacity capacitor, generally more than hundreds of volts, in storage capacitor charging process
Be different from supercapacitor charging process (super capacitor capacitance is very big, but charging voltage grade is generally lower, the three ten-day period of hot season extremely
Between tens of volts), currently without the Energy Management System for the storage capacitor for being directly applied for can be suitably used for nuclear magnetic resonance water detector,
Common charging system mostly uses the course of work of lithium battery charger, i.e., first constant current is filled, then constant pressure is filled, due at charging initial stage
When storage capacitor end voltage is zero, this charging principle designs charger, is raised to target voltage process from above freezing in capacitance voltage
In, the pressure drop that power MOS pipe is born is descending, and the voltage that charging initial stage metal-oxide-semiconductor is born is maximum, and dissipated power is also maximum, though
As storage capacitor voltage is gradually increased during right constant current source charging, the voltage on metal-oxide-semiconductor can be also gradually reduced, so that MOS
Pipe dissipated power reduces therewith, as soon as but entire charging process can continue minute or so, it is several therefore for entire charging process
For the energy consumption of half on metal-oxide-semiconductor, this is unfavorable for long-time field work for the instrument for using portable energy source.
To sum up, the property demand based on nuclear magnetic resonance water detector transmitter charge and discharge, combined charge efficiency and energy
The demand of aspect is lost, is badly in need of a kind of high efficiency energy management system suitable for nuclear magnetic resonance transmitter storage capacitor, the system
It requires following characteristics: 1., in charging process, can be realized the energy-storage capacitor high-efficiency constant-flow charging to voltage levels；
2., in discharge process, output current of charger dynamic is adjustable, can be realized and compensates storage capacitor voltage dynamic.3., working
After, it can be realized storage capacitor repid discharge.
Summary of the invention
In consideration of it, aiming at the problem that current nuclear magnetic resonance water detector transmitter output voltage electric current is decayed at any time, and lack
The status of the Energy Management System to charge less suitable for the storage capacitor of the big voltage span of large capacity.The utility model provides one kind
Nuclear magnetic resonance water detector transmitter energy management system, can be dynamic by the dynamic regulation and constant current source output current of supply voltage
State is adjusted, and is realized in the transmitter course of work, while meeting instrument performance demand, realizes the height to capacitor storage energy
Efficiency management.
The technical solution that the utility model is taken are as follows:
A kind of nuclear magnetic resonance water detector transmitter energy management system, including dynamic compensating electric capacity charger, the dynamic
Compensating electric capacity charger include battery group unit, control circuit power supply unit, DC-DC booster circuit unit, constant current source unit,
Signal acquisition unit, isolated location, control unit；
The battery group unit connects control circuit power supply unit, and the control circuit power supply unit includes the first isolation
DC-DC module power source, the second isolation DC-DC module power source, the first isolation DC-DC module power source are supplied for constant current source unit isolation
Electricity, the second isolation DC-DC module power source is for control unit, signal acquisition unit, isolated location isolation power supply；
The battery group unit connects DC-DC booster circuit unit, and the DC-DC booster circuit unit includes adjustable
DC-DC converter, high power D C-DC converter.
The constant current source unit includes high-power MOS tube, operational amplifier, the first sampling resistor, the first DAC module；Greatly
Power MOS pipe is separately connected adjustable DC-DC converter, the first sampling resistor, and high-power MOS tube is for realizing powerful constant current
Output；Operational amplifier is separately connected high-power MOS tube, the first sampling resistor, the first DAC module.
The operational amplifier is realized permanent for realizing the control of the insulated gate electrode to high-power MOS tube by negative-feedback
Flow closed-loop control；First sampling resistor, which is used to by current signal convert voltage signal, to be fed back to operational amplifier and compares,
Realize the closed loop configuration control of constant current；First DAC module is used to adjust the reference voltage of operational amplifier to realize output
The regulation of constant current.
The storage capacitor is separately connected the first isolation DC-DC module power source, the second isolation DC-DC module power source, first
Sampling resistor.
The signal acquisition unit includes hall device, the second sampling resistor, the first conditioning circuit, ADC sampling A/D chip.Institute
It states hall device and is separately connected storage capacitor, the first conditioning circuit, the second sampling resistor, hall device is for realizing to energy storage electricity
The high current for holding output is acquired, and by the first conditioning circuit, by signal condition to ADC sampling A/D chip voltage range into
Row acquisition.
The isolated location includes electromagnetic isolation chip, photoelectric isolated chip, and the electromagnetic isolation chip is separately connected
One DAC module, control unit；The photoelectric isolated chip is separately connected control unit, disconnecting switch.
A kind of nuclear magnetic resonance water detector transmitter energy management system of the utility model, may be implemented following functions:
First, the constant pressure source of charger may be implemented output voltage and be continuously adjusted (0~200V), and constant-current source may be implemented defeated
Electric current is continuously adjusted (1~20A) out.
Second, in the storage capacitor charging stage, charger can use small current constant-current source constant-current charge, constant pressure source output
Voltage dynamic regulation may be implemented efficiently to charge, and efficiency is up to 98%.
Third, in storage capacitor discharge process, it is output dynamically regulated to may be implemented constant-current source, synchroballistic storage capacitor
On output electric current decaying (attenuation range is within 0~20A), can guarantee transmission power zero attenuation in setting time, be promoted
Transmission signal quality.
4th, charger decays to 1 boundary's point (most substantially in storage capacitor output power more than after constant flow regulation range
Value 85%) after, charger can peak power output give capacitance galvanostatic charging.
A kind of nuclear magnetic resonance water detector transmitter energy management system of the utility model, can pass through the dynamic of supply voltage
Adjusting and constant current source output current dynamic regulation are realized in the transmitter course of work, real while meeting instrument performance demand
Now to the efficient management of capacitor storage energy.
Detailed description of the invention
Fig. 1 is Tthe utility model system structure chart.
Specific embodiment
As shown in Figure 1, a kind of nuclear magnetic resonance water detector transmitter energy management system, including the charging of dynamic compensating electric capacity
Device, the dynamic compensating electric capacity charger include battery group unit 001, control circuit power supply unit, DC-DC booster circuit list
Member, constant current source unit, signal acquisition unit, isolated location, control unit.
The battery group unit 001 uses large-capacity battery parallel operation, and battery group holds the 9000AH being not less than.
The battery group unit 001 connects control circuit power supply unit, and the control circuit power supply unit includes first
DC-DC module power source 008, second is isolated, DC-DC module power source 015 is isolated, the first isolation DC-DC module power source 008 is for perseverance
Flow source unit isolation power supply, second isolation DC-DC module power source 015 for control unit, signal acquisition unit, isolated location every
From power supply.
The first isolation DC-DC module power source 008, should using golden rising Yang URE1D12LD-20WR3 model modular power source
Power supply is the component isolation power supply of the constant-current source circuit designed floatingly.The second isolation DC-DC module power source 015 is using gold
Rising Yang A1205S-2WR2 model modular power source, for control circuit, sample circuit, the isolation circuit, conditioning circuit designed non-floatingly
Etc. the circuit components isolation power supply designed non-floatingly.
The battery group unit 001 connects DC-DC booster circuit unit, and the DC-DC booster circuit unit includes can
Adjust DC-DC converter 002, high power D C-DC converter 009.The adjustable DC-DC converter 002 uses southern exposure company YX-
The modular power source of DC300-J200 model, the output voltage that 0~200V may be implemented are continuously adjustable；The high power D C-DC becomes
Parallel operation 009 obtains enough power using more parallel connections using the modular power source of southern exposure company YX-DCN1000-200 model.
The constant current source unit includes high-power MOS tube 003, operational amplifier 004, the first sampling resistor 010, first
DAC module 005；High-power MOS tube 003 is separately connected adjustable DC-DC converter 002, the first sampling resistor 010, high-power MOS
Pipe 003 is for realizing powerful constant current output；Operational amplifier 004 is separately connected the sampling electricity of high-power MOS tube 003, first
Hinder the 010, first DAC module 005；The operational amplifier 004 for realizing the insulated gate electrode to high-power MOS tube 003 control
System realizes constant current closed-loop control by negative-feedback；First sampling resistor 010 is used to convert voltage signal for current signal
It feeds back to operational amplifier 004 to compare, realizes the closed loop configuration control of constant current；First DAC module 005 is for adjusting operation
The reference voltage of amplifier 004 is to realize the regulation of output constant current.
For the constant current for realizing output high current, the utility model uses two-way parallel way, specifically uses PQL40N50 type
Number field-effect tube, the constant current output of tens of peaces may be implemented.First sampling resistor 010 uses the constantan in 5 watts of 0.01 Europe
Sample resistance in parallel can improve sampling resistor power when bigger high current.First DAC module 005 is turned using 12 digit moulds
Change chip.
The storage capacitor 019 is separately connected the first isolation DC-DC module power source 008, second isolation DC-DC module power source
015, the first sampling resistor 010.The storage capacitor 019 is in parallel using the electrolytic capacitor of high voltage value, large capacity, this
Utility model is in parallel using 18 450V pressure resistances, electrolytic capacitor that capacitance is 1mF, and quantity in parallel can be improved in when bigger output
With single capacitor's capacity, the charging of dynamic compensating electric capacity charger described in the utility model, the as storage capacitor 019.
The signal acquisition unit includes that hall device 016, the second sampling resistor 020, the first conditioning circuit 017, ADC are adopted
Sample chip 018.ADC sampling A/D chip 018 carries out multi pass acquisition using 12 high-precision adcs.The hall device 016 connects respectively
Storage capacitor 019, the first conditioning circuit 017, the second sampling resistor 020 are connect, hall device 016 is for realizing to storage capacitor
The high current of 019 output is acquired, and by the first conditioning circuit 017, by signal condition to 018 voltage of ADC sampling A/D chip
It is acquired in range.
The isolated location includes electromagnetic isolation chip 006, photoelectric isolated chip 013, and the electromagnetic isolation chip 006 divides
The first DAC module 005, control unit are not connected；The photoelectric isolated chip 013 is separately connected control unit, disconnecting switch
014。
The isolated location relates generally to three classes isolation design in circuit, is based on the constant-current source list designed floatingly at first
Member, constant-current source circuit part use and design floatingly, and maximum operating voltage is up to 200V or more, to realize control unit to it
Effectively control, carries out isolation control using electromagnetic isolation chip 006.It is the isolation confession of each chip in floating ground circuit at second
Electricity, and in particular to operational amplifier, the isolation power supply of DAC, using isolation DC-DC module power source to ground floating in constant-current source circuit
Chip carries out isolation power supply.It is that disconnecting switch 014 designs at third, circuit is isolated it using photoelectric isolated chip 013
Control.
First sampling resistor 010 connects operational amplifier 004 by same phase amplifying unit 011, with phase amplifying unit
011 for amplifying the voltage signal on the first sampling resistor 010.
Second sampling resistor 020 connects the second conditioning circuit 022, the second conditioning circuit by voltage follower 021
022 connection ADC sampling A/D chip 018, the second sampling resistor 020 obtain the electricity on storage capacitor 019 using big resistance series connection partial pressure
Pressure value, after voltage follower 021 and the second conditioning circuit 022, by 018 collection voltages value of ADC sampling A/D chip.
Described control unit connects ADC sampling A/D chip 018, and ADC sampling A/D chip 018 is separately connected the first conditioning circuit
017, the second conditioning circuit 022.
Described control unit 012 connects the second DAC module 007, and the second DAC module 007 connects adjustable DC-DC converter
002。
Described control unit 012 uses STM32 single-chip microcontroller, and STM32 chip microcontroller obtains designing floatingly to what DAC was exported
The reference voltage that circuit part needs, realization export DAC to obtain the reference voltage for controlling controllable DC-DC module power source, and
Isolation control is realized using photoelectric isolated chip.
The work step of each functional unit is as follows:
S1, the switch K4 of control circuit power supply unit is opened by the single-chip microcontroller of control unit, and control circuit starts power up work
Make.
S2 turns on the switch K1 by control unit single-chip microcontroller, and battery group starts to power to booster circuit unit.
S3, Acquisition Circuit acquire capacitor on voltage, cold start when storage capacitor voltage be zero, or work one section when
Between after capacitance voltage be lower than a certain threshold value when, charger operation is in the efficient charge mode of low current.
S4 turns on the switch K3 under the efficient charge mode of low current, is powered by adjustable DC-DC converter.
S5 turns on the switch K6, is closed constant current source charging circuit, and the DAC for designing circuit part floatingly by single-chip microcontroller control is defeated
A reference voltage out exports 1A constant current and charges to storage capacitor.
S6 is connected on the sampling resistor of charge circuit, constantly converts the amplification of voltage signal feedback op for output electric current
The negative terminal of device realizes the negative-feedback of constant-current source.
The insulated gate electrode voltage of S7, high-power MOS tube are constantly controlled by DAC feedback, always work in constant current state, output
Constant current of corresponding size is storage capacitor charging.
S8, in charging process, the cathode voltage of capacitor is constantly increased, since the ground of constant current source charging circuit is connected to capacitor
Anode, so the current potential on the ground of constant-current source single channel can with the current potential of storage capacitor increase and increase, realize constant-current source circuit
Floating ground guarantees that high-power MOS tube is under the conditions of constant current operation always.
S9, Acquisition Circuit constantly acquires the end voltage of capacitor, and exports 0~5V by controlling DAC after single-chip microcontroller calculation processing
Control voltage, constantly regulate the output voltage of adjustable DC-DC module power source, realize the output voltage of 0~200V, control output
Voltage is consistently higher than the 6V of capacitance terminal voltage, so that metal-oxide-semiconductor is under constant current operation state, tube voltage drop is slightly larger than threshold electricity always
Pressure, realizes the power consumption of charging circuit, and entire charging is always in the state efficiently to charge.
S10, when storage capacitor charging reaches the end voltage of 200V, charging circuit turns off the switch K3, and it is high to stop low current
Charged state is imitated, and turns on the switch K2, is powered by high power D C-DC.
S11, when storage capacitor does not have supplying power for outside, capacitance terminal voltage and high power D C-DC output voltage are equal, charging
Circuit is in no-load standby state.
S12, when storage capacitor supplying power for outside, charging circuit works in dynamic compensating charge state, capacitance terminal voltage at
Exponential form rapid decay, Acquisition Circuit acquire the terminal voltage value of storage capacitor, and are transmitted to single-chip microcontroller and calculate pad value.
S13, single-chip microcontroller calculates the pad value of capacitor output electric current according to the evanescent voltage value of storage capacitor, and controls DAC
Export for reference voltage, adjust the output electric current of constant-current source circuit unit, realize to storage capacitor output current attenuation
Dynamic compensates.
S14, when storage capacitor output current attenuation reaches charging circuit maximum compensation electric current, single-chip microcontroller will control DAC
Output reference voltage remains unchanged, and charging circuit works in maximum constant current output state, and it is maximum that constant-current source, which maintains output electric current,
Value.
S15, Acquisition Circuit acquire the end voltage at storage capacitor both ends, when holding voltage attenuation to reach 85% critical value, control
Circuit off time energy accumulation capacitor output processed, stops storage capacitor supplying power for outside.
S16, when also needing storage capacitor to continue supplying power for outside, control unit control charging circuit returns to third step, and
It is carried out by step.
S17 disconnects switch K6 when not needing energy storage electricity capacitor supplying power for outside, stops the charging to energy-storage capacitor.
S18 turns off switch K2, K3, closes the power supply of DC-DC booster circuit unit；K7 is turned on the switch, by energy-storage capacitor
For constant current source power supply.
S19 acquires the end voltage of storage capacitor, according to the maximum diffipation power of high-power M0S pipe, adjusts constant-current circuit list
The reference voltage of member, with the dump energy for bleeding off storage capacitor of maximum diffipation power.
S20 controls reference voltage, makes the constant-current source discharge current of high-power MOS tube not less than maximum drain current, to stay
Safe enough allowance is not more than 20A.
S21 acquires the end voltage of energy-storage capacitor, and when holding voltage to be lower than 6V, constant-current source circuit unit cannot remain permanent
Banish electricity.At this point, capacitance terminal voltage has been far below safe voltage, control unit can be first turned off each power stage switch, then close
Disconnected control circuit power supply.
The low current constant-current charging phase, including the system cold stage for opening machine under 019 nought state of storage capacitor, energy storage electricity
The stage of low current constant-current charge when holding 019 lower than threshold value；
The electric current dynamic regulation compensated stage, when referring to the transmitting of nuclear magnetic resonance water detector, system is defeated to storage capacitor 019
Power attenuation synchronizes compensation out, and dynamic regulation compensates size of current, to maintain the stage of output power zero attenuation；
The high current constant current compensated stage refers to that in nuclear magnetic resonance water detector emission process, compensating charge reaches most
Big value, 019 output voltage of storage capacitor, electric current start to decay, but decay not up to 85% when, constant current source unit maintains
The stage of the constant current compensation electric current of 20A；
The shutdown output and repid discharge stage refer to that storage capacitor 019 exports in the transmitting of nuclear magnetic resonance water detector
The stage of current attenuation to 85%.
The low current constant-current charging phase, comprising the following steps:
(1) control unit exports 12 position digital signals, by the first DAC module of isolating chip control constant current source unit
005, control generates a stable reference voltage；
(2) control voltage is exported through comparator, controls 003 insulated gate electrode voltage of high-power MOS tube；
(3) high-power MOS tube 003 works in constant current state, generates a voltage value on the first sampling resistor 010, passes through
The negative terminal that operational amplifier 004 is accessed after amplifying with phase amplifying unit 011 forms current feedback loop；
(4) voltage that closed loop control high-power MOS tube 003 is added in 010 end of the first sampling resistor maintains always
0.01V, the constant current that constant-current source exports 1A always are charged to storage capacitor 019；
(5) in 019 charging process of storage capacitor, tank voltage constantly rises, and is designed floatingly using constant-current source, with energy storage electricity
Holding 019 end voltage is constant-current source with reference to ground, and constant-current circuit control loop will stablize output constant current during the charging process；
(6) ADC sampling A/D chip 018 acquires 019 end voltage of storage capacitor, and 12 controls are exported after being calculated by control unit
Signal adjusts the control voltage of adjustable DC-DC converter 002, adjusts within the scope of 0~200V by DAC within the scope of 0~5V
Output voltage is realized controllable with controlling the 6V for being consistently greater than 019 end voltage of storage capacitor to 003 supply voltage of high-power MOS tube
The closed-loop control of voltage source.
The electric current dynamic regulation compensated stage, comprising the following steps:
(1) when storage capacitor 019 gives nuclear magnetic resonance water detector transmitter, high power D C-DC converter 009 is switched to, it is right
The power supply of constant-current source circuit constant pressure.
(2) ADC sampling A/D chip 018 acquisition output electric current, after being calculated by control unit export 12 control signals, through every
The first DAC module 005 from chip controls constant current source unit, exports corresponding reference voltage value；
(3) comparator reference voltage value changes, so that the voltage value of output control high-power MOS tube 003 changes correspondingly；
(4) high-power MOS tube 003 exports corresponding constant current and gives storage capacitor 019 compensatory charging, constant-current source circuit sampling
Resistance will export electric current and be converted into voltage signal feedback to 004 negative terminal of operational amplifier, form constant current source current closed-loop control；
(5) it is acquired in real time by output electric current, then constant-current source circuit amp reference voltage is constantly regulate by control unit,
Closed loop configuration is formed, in 0~20A dynamic regulation constant current source output current size, the compensatory charging of dynamic makes storage capacitor 019
Output power zero attenuation；
The high current constant current compensated stage, comprising the following steps:
(1) ADC sampling A/D chip 018 acquires the electric current that storage capacitor 019 exports, and control unit judges that storage capacitor 019 is defeated
Power attenuation value out；
(2) when 019 output power pad value of storage capacitor is equal to charging circuit peak power output, control unit output
12 control signals are constant, and the first DAC module 005 through isolating chip control constant-current source circuit exports maximum reference voltage
It is worth and remains unchanged；
(3) constant-current source circuit exports 20A and remains unchanged；
(4) ADC sampling A/D chip 018 acquires the output electric current of storage capacitor 019, and control unit judges whether export electric current
The 85% of initial value is decayed to, then repetitive process (3), "Yes" then carry out (5) step to "No"；
(5) output of off time energy accumulation capacitor 019, and close the charge circuit of storage capacitor 019.
The shutdown output and repid discharge stage, comprising the following steps:
(1) acquisition storage capacitor 019 exports electric current, when the 85% of output current attenuation to initial value, judges whether to emit
Whether machine completes emitting times, and "Yes" then 019 output loop of off time energy accumulation capacitor carries out this to 019 repid discharge of storage capacitor
Stage (3) step, "No" do not complete emitting times then, then carry out this stage (2) step；
(2) 019 output loop of storage capacitor is closed, high current constant current compensated stage is terminated, then successively carries out low current perseverance
Current charge stage, electric current dynamic compensated stage, high current constant current compensated stage, output off-phases；
(3) switch off control circuit power supply unit, disconnects switch K6, turns on the switch K7, by constant current source unit to energy storage electricity
Hold 019 electric discharge, 019 dump energy of storage capacitor is dissipated by the fever of high-power MOS tube 003；
(4) when 019 end voltage of storage capacitor is lower than 6V, control unit is first turned off each power stage switch, then turns off control
Circuit power supply.
(5) nuclear magnetic resonance water detector transmitter is completely switched off.
Claims (5)
1. a kind of nuclear magnetic resonance water detector transmitter energy management system, including dynamic compensating electric capacity charger, it is characterised in that:
The dynamic compensating electric capacity charger includes battery group unit (001), control circuit power supply unit, DC-DC booster circuit list
Member, constant current source unit, signal acquisition unit, isolated location, control unit；
The battery group unit (001) connects control circuit power supply unit, the control circuit power supply unit include first every
From DC-DC module power source (008), the second isolation DC-DC module power source (015), the first isolation DC-DC module power source (008) is used
It is isolated in constant current source unit and powers, the second isolation DC-DC module power source (015) is used for control unit, signal acquisition unit, isolation
Cell isolation power supply；
The battery group unit (001) connects DC-DC booster circuit unit, and the DC-DC booster circuit unit includes adjustable
DC-DC converter (002), high power D C-DC converter (009)；
The constant current source unit includes high-power MOS tube (003), operational amplifier (004), the first sampling resistor (010), first
DAC module (005)；
High-power MOS tube (003) is separately connected adjustable DC-DC converter (002), the first sampling resistor (010), high-power MOS
(003) is managed for realizing powerful constant current output；
Operational amplifier (004) is separately connected high-power MOS tube (003), the first sampling resistor (010), the first DAC module
(005)；The operational amplifier (004) for realizing the insulated gate electrode to high-power MOS tube (003) control, by negative anti-
Constant current closed-loop control is realized in feedback；First sampling resistor (010) feeds back to fortune for converting voltage signal for current signal
It calculates amplifier (004) to compare, realizes the closed loop configuration control of constant current；First DAC module (005) is for adjusting operation amplifier
The reference voltage of device (004) is to realize the regulation of output constant current；
Storage capacitor (019) is separately connected the first isolation DC-DC module power source (008), the second isolation DC-DC module power source
(015), the first sampling resistor (010)；
The signal acquisition unit includes hall device (016), the second sampling resistor (020), the first conditioning circuit (017), ADC
Sampling A/D chip (018)；
The hall device (016) is separately connected storage capacitor (019), the first conditioning circuit (017), the second sampling resistor
(020), hall device (016) is acquired for realizing the high current exported to storage capacitor (019), and passes through the first conditioning
Circuit (017) will be acquired in signal condition to ADC sampling A/D chip (018) voltage range；
The isolated location includes electromagnetic isolation chip (006), photoelectric isolated chip (013), the electromagnetic isolation chip (006)
It is separately connected the first DAC module (005), control unit；The photoelectric isolated chip (013) is separately connected control unit, isolation
It switchs (014).
2. a kind of nuclear magnetic resonance water detector transmitter energy management system according to claim 1, it is characterised in that: described
One sampling resistor (010) connects operational amplifier (004) by same phase amplifying unit (011), is used for phase amplifying unit (011)
Amplify the voltage signal on the first sampling resistor (010).
3. a kind of nuclear magnetic resonance water detector transmitter energy management system according to claim 1, it is characterised in that: described
Two sampling resistors (020) pass through voltage follower (021) connection the second conditioning circuit (022), the second conditioning circuit (022) connection
ADC sampling A/D chip (018), the second sampling resistor (020) obtain the voltage on storage capacitor (019) using big resistance series connection partial pressure
Value, after voltage follower (021) and the second conditioning circuit (022), by ADC sampling A/D chip (018) collection voltages value.
4. a kind of nuclear magnetic resonance water detector transmitter energy management system according to claim 1, it is characterised in that: the control
Unit processed connects ADC sampling A/D chip (018), and ADC sampling A/D chip (018) is separately connected the first conditioning circuit (017), the second conditioning
Circuit (022).
5. a kind of nuclear magnetic resonance water detector transmitter energy management system according to claim 1, it is characterised in that: the control
Unit processed connects the second DAC module (007), and the second DAC module (007) connects adjustable DC-DC converter (002).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821404832.XU CN208672813U (en) | 2018-08-29 | 2018-08-29 | A kind of nuclear magnetic resonance water detector transmitter energy management system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821404832.XU CN208672813U (en) | 2018-08-29 | 2018-08-29 | A kind of nuclear magnetic resonance water detector transmitter energy management system |
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| Publication Number | Publication Date |
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| CN208672813U true CN208672813U (en) | 2019-03-29 |
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ID=65840002
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| CN201821404832.XU Expired - Fee Related CN208672813U (en) | 2018-08-29 | 2018-08-29 | A kind of nuclear magnetic resonance water detector transmitter energy management system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732634A (en) * | 2018-08-29 | 2018-11-02 | 三峡大学 | A kind of nuclear magnetic resonance water detector transmitter energy management system |
-
2018
- 2018-08-29 CN CN201821404832.XU patent/CN208672813U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732634A (en) * | 2018-08-29 | 2018-11-02 | 三峡大学 | A kind of nuclear magnetic resonance water detector transmitter energy management system |
| CN108732634B (en) * | 2018-08-29 | 2024-02-13 | 三峡大学 | Nuclear magnetic resonance water-finding instrument transmitter energy management system |
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