CN107070229A - A kind of ADCP transmitting source levels conditioned circuit and method - Google Patents
A kind of ADCP transmitting source levels conditioned circuit and method Download PDFInfo
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- CN107070229A CN107070229A CN201611180983.7A CN201611180983A CN107070229A CN 107070229 A CN107070229 A CN 107070229A CN 201611180983 A CN201611180983 A CN 201611180983A CN 107070229 A CN107070229 A CN 107070229A
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- 238000004134 energy conservation Methods 0.000 abstract description 2
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- FZKWRPSUNUOXKJ-CVHRZJFOSA-N (4s,4ar,5s,5ar,6r,12ar)-4-(dimethylamino)-1,5,10,11,12a-pentahydroxy-6-methyl-3,12-dioxo-4a,5,5a,6-tetrahydro-4h-tetracene-2-carboxamide;hydrate Chemical compound O.C1=CC=C2[C@H](C)[C@@H]([C@H](O)[C@@H]3[C@](C(O)=C(C(N)=O)C(=O)[C@H]3N(C)C)(O)C3=O)C3=C(O)C2=C1O FZKWRPSUNUOXKJ-CVHRZJFOSA-N 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
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Abstract
The invention provides a kind of ADCP transmitting source levels conditioned circuit and method.This method includes：The positive voltage and negative voltage in setting range are exported respectively, and the absolute value of negative voltage of the positive voltage of the output with exporting is equal；According to the positive voltage of output and negative voltage driving transducer, to realize the transmitting of varying strength signal.The present invention changes the driving voltage of transducer by input terminal voltage of the generating positive and negative voltage value in the setting range of output as driver element, that is, realizes that the sound source level of transducer is adjustable.On the premise of not only solving the drawbacks of change transmitting dutycycle is brought, and energy-conservation can be realized, unnecessary expenditures can be reduced on hardware again, the complexity of system design is reduced.
Description
Technical field
The present invention relates to water volume flow rate fields of measurement, more particularly to a kind of ADCP transmitting source levels conditioned circuit and method.
Background technology
ADCP is that acoustic Doppler fluid velocity profile instrument is a kind of measurement water volume flow rate developed based on acoustic Doppler principle
Equipment.Wherein sound source level is an important indicator of transducer work, and its size is used for weighing what transducer can be emitted
The energy size of signal.The signal of transmitting is bigger, and corresponding echo-signal is bigger.And we being needed the not all moment more it is so big
Echo-signal.Such as when surveying the bottom of to, echo-signal is inherently very big, and its letter of decay is often also needed when receiving circuit is handled
Number, so transducer is not required to so big sound source level；For another example when surveying than shallower current, also it is not required to so because closer to the distance
Big sound source level.If now sound source level is non-adjustable, the unnecessary loss of energy is on the one hand caused, it is on the other hand electric to receiving
Road amplification treatment circuit brings unnecessary trouble（Because of the echo strength difference 40-50dB tested the speed the bottom of to and current test the speed）.With
Preceding technology, changes the dutycycle of transmission signal to change sound source level, the drawbacks of so changing changes duty when mostly using transmitting
It is smaller than adjustable scope, also increase the complexity of system design, and our the general drivings that transducer is made of D class power amplifiers are electric
Road, D classes power amplifier is easily caused wave distortion when realizing change dutycycle（A class power amplification efficiencies are too low, therefore do not use）.It is another
Aspect is exactly to increase adjustable gain scope with strength in receiving circuit, so carrys out unnecessary expenditures to hardware strap, and energy band is given again
Carry out unnecessary waste.
In view of this, it would be highly desirable to develop a kind of ADCP transmitting source levels conditioned circuit that can solve the problem that above mentioned problem and side
Method.
The content of the invention
The drawbacks of purpose of the present invention aims to solve the problem that above-mentioned ADCP transmitting source levels regulation scheme, so as to provide a kind of new
ADCP transmitting source levels conditioned circuit and method.
To achieve the above object, in a first aspect, the invention provides a kind of adjustable method of ADCP transmitting source levels.The party
Method includes：
The positive voltage and negative voltage in setting range, the absolute value of the positive voltage and the negative voltage of output of the output are exported respectively
It is equal；
According to the positive voltage of output and negative voltage driving transducer, to realize the transmitting of varying strength signal.
Preferably, the positive voltage scope of the output is 2.5V~20V, the negative voltage range of the output for -2.5V~-
20V。
It is further preferred that the positive voltage of the output 2.5V~20V is specifically included：
Generation is more than or equal to or less than the positive output voltage of input voltage；
Align output voltage and be adjusted control, to realize conversion of the positive output voltage from 2.5V to 20V.
It is further preferred that the negative voltage of the output -2.5V~-20V is specifically included：
Generate less than or higher than input voltage and opposite polarity in the negative output voltage of input voltage；
Control is adjusted to negative output voltage to realize conversion of the negative output voltage from -2.5V to -20V.
In second aspect, present invention also offers a kind of ADCP transmitting source levels conditioned circuit.The circuit includes positive transmitting
Voltage regulation unit, negative emitting voltage adjustment unit, driver element and transducer,
The positive emitting voltage adjustment unit, negative emitting voltage adjustment unit are connected with the driver element respectively, use respectively
Positive voltage and negative voltage in output setting range, to provide different size of voltage source to the driver element；It is described just
The positive voltage of emitting voltage adjustment unit output is equal with the absolute value of the negative voltage of the negative emitting voltage adjustment unit output；
The driver element is connected with the transducer, for driving the transducer according to the voltage source of offer；
The transducer, for being driven by driver element, realizes the transmitting of varying strength signal.
Preferably, the positive voltage scope of the positive emitting voltage adjustment unit output is 2.5V~20V, the negative transmitting electricity
The negative voltage range for pressing adjustment unit output is -2.5V~-20V.
It is further preferred that the positive emitting voltage adjustment unit includes copped wave unit, resistance feedback unit and control list
Member,
The copped wave unit is the SEPIC chopper circuits built of DC/DC controllers LT3757, itself and the resistance feedback unit
It is connected, to realize that output voltage is more than or equal to or less than input voltage；
The resistance feedback unit is connected with described control unit and the copped wave unit, to change resistance by control unit
To realize that output voltage 2.5V to 20V's is controllable.
It is further preferred that the positive emitting voltage adjustment unit also includes filter unit, itself and the copped wave unit
It is connected, to be filtered processing to the voltage that copped wave unit is exported.
It is further preferred that the negative emitting voltage adjustment unit includes step-down/up type converter unit, resistance feedback unit
And control unit,
The step-down/up type converter unit is the BUCK-BOOST circuits built of DC/DC controllers LT3757, itself and the resistance
Feedback unit is connected, to realize that output voltage is less than or higher than input voltage, output voltage opposite polarity is in input voltage；
The resistance feedback unit is connected with described control unit and the step-down/up type converter unit, to pass through control unit
Change resistance to realize that output voltage -2.5V's to -20V is controllable.
It is further preferred that the negative emitting voltage adjustment unit also includes filter unit, itself and the step-down/up type
Converter unit is connected, to be filtered processing to the voltage that step-down/up type converter unit is exported.
The beneficial effects of the invention are as follows：The generating positive and negative voltage in setting range exported by positive and negative emitting voltage adjustment unit
It is worth the input terminal voltage as driver element, and then changes the driving voltage of transducer, that is, realizes that the sound source level of transducer is adjustable.
On the premise of not only solving the drawbacks of change transmitting dutycycle is brought, and energy-conservation can be realized, can be reduced again on hardware
Unnecessary expenditures, reduce the complexity of system design.
Brief description of the drawings
Fig. 1 is a kind of theory diagram of ADCP transmitting source levels conditioned circuit of the present invention；
Fig. 2 is a kind of positive emitting voltage adjustment unit structured flowchart of ADCP transmitting source levels conditioned circuit of the present invention；
Fig. 3 is a kind of negative emitting voltage adjustment unit structured flowchart of ADCP transmitting source levels conditioned circuit of the present invention；
Fig. 4 is Fig. 2 specific electrical schematic diagram；
Fig. 5 is Fig. 3 specific electrical schematic diagram；
Fig. 6 is a kind of adjustable method flow diagram of ADCP transmitting source levels of the invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be noted that accompanying drawing is merely illustrative, do not painted according to strict ratio
Make, and the wherein possible promising partial enlargement for describing facility and carrying out, diminution, may also have for conventional partial structure necessarily
It is default.
Fig. 1 is a kind of theory diagram of ADCP transmitting source levels conditioned circuit of the present invention.
As shown in figure 1, the ADCP transmitting source levels conditioned circuit of the present invention includes positive emitting voltage adjustment unit 1, negative hair
Penetrate voltage regulation unit 2, driver element 3 and transducer 4.
Positive emitting voltage adjustment unit 1 and negative emitting voltage adjustment unit 2 are connected with driver element 3 respectively, use respectively
Positive voltage and negative voltage in output setting range, to provide different size of voltage source to driver element 3.And just launch
The positive voltage that voltage regulation unit 1 is exported is equal with the absolute value for the negative voltage that negative emitting voltage adjustment unit 2 is exported.Wherein,
The positive voltage scope of the positive output of emitting voltage adjustment unit 1 is 2.5V~20V, bears the negative electricity of the output of emitting voltage adjustment unit 2
Pressure scope is -2.5V~-20V.
Driver element 3 is connected with transducer 4, main to be responsible for being adjusted according to positive emitting voltage adjustment unit 1 and negative emitting voltage
The voltage source driving transducer 4 that section unit 2 is provided works.Wherein, driver element 3 uses D-type power amplifier.
Transducer 4 is mainly used to be driven by driver element 3, realizes the transmitting of varying strength signal.
As shown in Fig. 2 the positive emitting voltage adjustment unit 1 of the present invention includes copped wave unit 11, the and of resistance feedback unit 12
Control unit 13.Copped wave unit 11 is the SEPIC chopper circuits built of DC/DC controllers LT3757, itself and resistance feedback unit
12 are connected, and are responsible for realizing that output voltage is more than or equal to or less than input voltage.Resistance feedback unit 12 and control unit 13 and
Copped wave unit 11 is connected, and is responsible for changing resistance to realize that output voltage 2.5V to 20V's is controllable by control unit 13.
It should be appreciated that the positive emitting voltage adjustment unit 1 in the present embodiment also includes filter unit 14 and connected
Load 15, filter unit 14 is connected with copped wave unit 11, to be sent after being filtered processing to the voltage that copped wave unit 11 is exported
To loading 15 ends.
As shown in figure 3, negative emitting voltage adjustment unit 2 includes step-down/up type converter unit 21, the and of resistance feedback unit 22
Control unit 23.Step-down/up type converter unit 21 is the BUCK-BOOST circuits built of DC/DC controllers LT3757, itself and electricity
Hinder feedback unit 22 to be connected, to realize that output voltage is less than or higher than input voltage, output voltage opposite polarity is in input electricity
Pressure.Resistance feedback unit 22 is connected with control unit 23 and step-down/up type converter unit 21, is hindered to be changed by control unit
Value is to realize that output voltage -2.5V is controllable to -20V.
Equally, the negative emitting voltage adjustment unit 2 in the present embodiment also includes filter unit 24 and connected load
25, filter unit 24 is connected with step-down/up type converter unit 21, and the voltage to be exported to step-down/up type converter unit 21 is carried out
Give load 25 ends after filtering process.
Furthermore, it is necessary to which positive emitting voltage adjustment unit 1 and negative emitting voltage adjustment unit 2 are equal in explanation, the present invention
Employ DC/DC controllers LT3757 and build circuit, because the input voltage of ADCP systems is 12V, transducer needs electricity
The achievable voltage adjustable extent in source is：Generating positive and negative voltage will be adjustable from positive and negative 2.5V to positive and negative 20V, and generating positive and negative voltage is in hair
To be balanced more than when penetrating i.e. absolute value it is equal, it is necessary to electric power outputting current in more than 500mA.So the present invention is using DC/DC controls
Device LT3757 chips processed build circuit, and LT3757 chips are the wide input range DC/DC controls that Linear Tech (Linear) releases
Device processed, the device is applied to booster type, inverse-excitation type, SEPIC and negative output power supply application, can produce and positive or negative stablize defeated
Go out voltage.LT3757 has two Voltage Feedback error amplifiers and reference voltage.It is a set of to be used for positive output voltage, have
1.60V reference voltage；Another set of to be used for negative output voltage, with -0.8V reference voltages, two benchmark both are from single anti-
Pin is presented, so that LT3757 turns into the highly versatile DC/DC controllers suitable for polytype Power Management Design.And
During 500mA, now the delivery efficiency of power supply can reach 90% or so.Illustrated below by way of Fig. 4 and Fig. 5.
Fig. 4 illustrates a kind of positive emitting voltage regulation electrical principle of ADCP transmitting source levels conditioned circuit of the present invention
Figure, as shown in figure 4, the present invention implement in a SEPIC chopper circuit has been built using chip LT3757, its be one can be real
Existing output voltage is more than, and is equal to, or less than the circuit of input voltage, by LT3757（U6）, metal-oxide-semiconductor Q2 and diode D3 constitute.
Metal-oxide-semiconductor Q2 grid and LT3757（U6）7 pin be connected, drain electrode be connected with inductance L1 3 pin, source class and LT3757（U6）6
Pin is connected.LT3757（U6）When producing positive voltage, the inductance L1 bipod of Same Name of Ends 1,2 connects input and the ground of power supply, inductance respectively
L1 4 pin are connected with diode D3 one end.The diode D3 other ends pass through resistance R45 and Zero-ohm resistor R60 and controllable resistor
Positive voltage needed for the connected final outputs of U8.Wherein, resistance R45, resistance R46, Zero-ohm resistor R60 and controllable resistor U8 are constituted
Resistance feedback unit.Electric capacity C38, C52, C55, C54 constitute filter unit, to LT3757（U6）Output positive voltage is filtered
Ripple processing.In the circuit that LT3757 chips are built, it is defeated easily to control to control R45 and controllable resistor U8 resistance
Go out voltage.The formula of its output voltage is as follows：
Vout, positive=1.6V* (1+R45/U8 resistance)
Controllable resistor U8 resistance can be changed in above formula to change output voltage, control controllable resistor U8 to enter by control unit
Row resistance is converted, it is possible to achieve output voltage 2.5V to 20V's is controllable.
In addition, the embodiment of the present invention can also realize fixed positive voltage output, the Output Voltage Formula of the fixation is as follows：
Vout = 1.6V*(1+R45/R46)
Fig. 5 illustrates a kind of negative emitting voltage regulation electrical schematic diagram of ADCP transmitting source levels conditioned circuit of the present invention, such as
Shown in Fig. 5, LT3757（U7）Using should be INVERTING by the way of（Both DC-DC Switching Power Supplies inversion）Negative supply is provided.
INVERTIN circuits are also BUCK-BOOST circuits, are one of basic DC-DC transformation topology structures of six kinds of Switching Power Supply.It is called
Step-down/up type converter, is that a kind of output voltage can both be less than or higher than the single tube not isolated DC converter of input voltage,
But the polarity of its output voltage is opposite with input voltage.BUCK-BOOST circuits can also regard Buck circuits and Boost circuit as
It is in series.In the figure, INVERTIN circuits are by LT3757（U7）, metal-oxide-semiconductor Q3 and diode D4 constitute.Metal-oxide-semiconductor Q3 grid
Pole and LT3757（U7）7 pin be connected, drain electrode be connected with inductance L2 3 pin, source class is connected with LT3757 6 pin.LT3757 is produced
During raw negative voltage, the inductance L2 bipod of Same Name of Ends 1,2 connects the input of power supply and the output of power supply, inductance L2 4 pin and two respectively
Level pipe D4 is connected to ground.Wherein, resistance R53, resistance R54, Zero-ohm resistor R61 and controllable resistor U9 constitute resistance feedback list
Member.Electric capacity C39, C41, C42, C43 constitute filter unit, to LT3757（U6）Output negative voltage is filtered processing.Core
Piece LT3757（U7）In the circuit built, it can also control R53 and U9 resistance defeated easily to control as positive voltage
Go out voltage.The formula of its output voltage is as follows：
Vout, positive=- 0.8V* (1+R53/ U9 resistance)
Controllable resistor U8 resistance can be changed in above formula to change output voltage, control controllable resistor U8 to enter by control unit
Row resistance is converted, it is possible to achieve output voltage -2.5V's to -20V is controllable.So as to finally realize that transmitting source level is controllable.
In addition, the embodiment of the present invention can also realize fixed negative voltage output, the Output Voltage Formula of the fixation is as follows：
Vout = 1.6V*(1+R53/R54)
Fig. 6 is a kind of adjustable method flow diagram of ADCP transmitting source levels of the invention.
In step 601, positive voltage and negative voltage respectively in output setting range, the positive voltage of output and bearing for output
The absolute value of voltage is equal, and the positive voltage scope of output is 2.5V~20V, and the negative voltage range of output is -2.5V~-20V.
In step 602, according to the positive voltage of output and negative voltage driving transducer, to realize the hair of varying strength signal
Penetrate.
Wherein, the positive voltage that 2.5V~20V is exported in step 601 is specifically included：Produce first and be more than or equal to or be less than
The positive output voltage of input voltage, a SEPIC chopper circuits realization has been built such as by using chip LT3757.Align defeated
Go out voltage and be adjusted control, to realize conversion of the positive output voltage from 2.5V to 20V, such as by control circuit control with
The resistance value for the resistive feedback circuit that SEPIC chopper circuits connect is to realize the adjustment to voltage.Output described in step 601-
2.5V~-20V negative voltage is specifically included：Generate less than or higher than input voltage and opposite polarity in the negative output of input voltage
Voltage, such as by the BUCK-BOOST circuit realirations built using chip LT3757.Control is adjusted to negative output voltage
To realize conversion of the negative output voltage from -2.5V to -20V, connect such as by control circuit control with SEPIC chopper circuits
The resistance value of resistive feedback circuit is to realize the adjustment to voltage.
In step 602, it can be realized according to the positive voltage of output and negative voltage driving transducer by D-type power amplifier.
In the description of the invention, it is necessary to which explanation, term " connected " " connection " should be interpreted broadly, for example, can be with
It is to be fixedly connected or be detachably connected, or is integrally connected；Can be mechanical connection or electrical connection；Can be with
It is to be joined directly together, can also be indirectly connected to by intermediary.For the ordinary skill in the art, can specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Professional should further appreciate that, each example described with reference to the embodiments described herein
Unit and algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, hard in order to clearly demonstrate
The interchangeability of part and software, generally describes the composition and step of each example according to function in the above description.
These functions are performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.
Professional and technical personnel can realize described function to each specific application using distinct methods, but this realize
It is not considered that beyond the scope of this invention.
The method that is described with reference to the embodiments described herein can use hardware, computing device the step of algorithm
Software module, or the two combination are implemented.Software module can be placed in random access memory（RAM）, internal memory, read-only storage
（ROM）, programmable read only memory（PROM）, Erarable Programmable Read only Memory (EPROM), electrically erasable it is read-only
Any other form well known in memory (EEPROM), register, hard disk, moveable magnetic disc, CD-ROM or technical field
Storage medium in.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included
Within protection scope of the present invention.
Claims (10)
1. a kind of adjustable method of ADCP transmitting source levels, it is characterised in that including：
The positive voltage and negative voltage in setting range, the absolute value of the positive voltage and the negative voltage of output of the output are exported respectively
It is equal；
According to the positive voltage of output and negative voltage driving transducer, to realize the transmitting of varying strength signal.
2. a kind of adjustable method of ADCP transmitting source levels according to claim 1, it is characterised in that the positive electricity of the output
Pressure scope is 2.5V~20V, and the negative voltage range of the output is -2.5V~-20V.
3. a kind of adjustable method of ADCP transmitting source levels according to claim 2, it is characterised in that the output 2.5V~
20V positive voltage is specifically included：
Generation is more than or equal to or less than the positive output voltage of input voltage；
Align output voltage and be adjusted control, to realize conversion of the positive output voltage from 2.5V to 20V.
4. a kind of adjustable method of ADCP transmitting source levels according to claim 2, it is characterised in that the output -2.5V
~-20V negative voltage is specifically included：
Generate less than or higher than input voltage and opposite polarity in the negative output voltage of input voltage；
Control is adjusted to negative output voltage to realize conversion of the negative output voltage from -2.5V to -20V.
5. a kind of ADCP transmitting source levels conditioned circuit, it is characterised in that including:Positive emitting voltage adjustment unit, negative transmitting electricity
Adjustment unit, driver element and transducer are pressed,
The positive emitting voltage adjustment unit, negative emitting voltage adjustment unit are connected with the driver element respectively, use respectively
Positive voltage and negative voltage in output setting range, to provide different size of voltage source to the driver element；It is described just
The positive voltage of emitting voltage adjustment unit output is equal with the absolute value of the negative voltage of the negative emitting voltage adjustment unit output；
The driver element is connected with the transducer, for driving the transducer according to the voltage source of offer；
The transducer, for being driven by driver element, realizes the transmitting of varying strength signal.
6. a kind of ADCP transmitting source levels conditioned circuit according to claim 5, it is characterised in that the positive emitting voltage
The positive voltage scope of adjustment unit output is 2.5V~20V, the negative voltage range of the negative emitting voltage adjustment unit output for-
2.5V~-20V.
7. a kind of ADCP transmitting source levels conditioned circuit according to claim 5, it is characterised in that the positive emitting voltage
Adjustment unit includes copped wave unit, resistance feedback unit and control unit,
The copped wave unit is the SEPIC chopper circuits built of DC/DC controllers LT3757, itself and the resistance feedback unit
It is connected, to realize that output voltage is more than or equal to or less than input voltage；
The resistance feedback unit is connected with described control unit and the copped wave unit, to change resistance by control unit
To realize that output voltage 2.5V to 20V's is controllable.
8. a kind of ADCP transmitting source levels conditioned circuit according to claim 7, it is characterised in that the positive emitting voltage
Adjustment unit also includes filter unit, and it is connected with the copped wave unit, to be filtered to the voltage that copped wave unit is exported
Processing.
9. a kind of ADCP transmitting source levels conditioned circuit according to claim 5, it is characterised in that the negative emitting voltage
Adjustment unit includes step-down/up type converter unit, resistance feedback unit and control unit,
The step-down/up type converter unit is the BUCK-BOOST circuits built of DC/DC controllers LT3757, itself and the resistance
Feedback unit is connected, to realize that output voltage is less than or higher than input voltage, output voltage opposite polarity is in input voltage；
The resistance feedback unit is connected with described control unit and the step-down/up type converter unit, to pass through control unit
Change resistance to realize that output voltage -2.5V's to -20V is controllable.
10. a kind of ADCP transmitting source levels conditioned circuit according to claim 9, it is characterised in that the negative transmitting electricity
Adjustment unit is pressed also to include filter unit, it is connected with the step-down/up type converter unit, to step-down/up type converter unit
The voltage of output is filtered processing.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593959A (en) * | 2018-06-12 | 2018-09-28 | 南京海普水文科技有限公司 | A kind of transmitting detection circuit based on ADCP systems |
| CN110075431A (en) * | 2019-06-12 | 2019-08-02 | 成都工业学院 | A kind of focusing ultrasound-driven circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101860054A (en) * | 2010-04-29 | 2010-10-13 | 海洋王照明科技股份有限公司 | Charge management circuit of lithium-ion battery |
| CN105468079A (en) * | 2015-12-30 | 2016-04-06 | 沈阳东软医疗系统有限公司 | Two-path symmetrical-output adjustable power source |
-
2016
- 2016-12-20 CN CN201611180983.7A patent/CN107070229A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860054A (en) * | 2010-04-29 | 2010-10-13 | 海洋王照明科技股份有限公司 | Charge management circuit of lithium-ion battery |
| CN105468079A (en) * | 2015-12-30 | 2016-04-06 | 沈阳东软医疗系统有限公司 | Two-path symmetrical-output adjustable power source |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593959A (en) * | 2018-06-12 | 2018-09-28 | 南京海普水文科技有限公司 | A kind of transmitting detection circuit based on ADCP systems |
| CN110075431A (en) * | 2019-06-12 | 2019-08-02 | 成都工业学院 | A kind of focusing ultrasound-driven circuit |
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Application publication date: 20170818 |