CN107770678A - A kind of low-power consumption sound signal generator - Google Patents
A kind of low-power consumption sound signal generator Download PDFInfo
- Publication number
- CN107770678A CN107770678A CN201710003264.6A CN201710003264A CN107770678A CN 107770678 A CN107770678 A CN 107770678A CN 201710003264 A CN201710003264 A CN 201710003264A CN 107770678 A CN107770678 A CN 107770678A
- Authority
- CN
- China
- Prior art keywords
- power supply
- resistance
- low
- max1684
- supply modules
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a kind of low-power consumption sound signal generator.The generator, including integrating electroplax, the integrated electroplax includes signal processor and power management module, the signal processor includes MSP430F1611 microcontrollers, the MSP430F1611 microcontrollers connect DAC7611 digital analog converters, the DAC7611 digital analog converters connect second order Butterworth LPF, the second order Butterworth LPF connects HCNR200 linear optical coupling circuits, the power management module includes MAX1684 power supply modules and MAX831 power supply modules, the MAX1684 power supply modules are powered for digital device, the MAX831 power supply modules are powered for analog device.The volume that the generator solves traditional Underwater Sound Transmitter system is big, the problem of high power consumption.The present invention is by the way that MSP430F1611 microcontroller implementations are portable and the underwater signal generator of low-power consumption.
Description
Technical field
The present invention relates to portable underwater sound electronic equipment, and in particular to a kind of low-power consumption sound signal generator.
Background technology
Disclosed in existing Chinese patent database and realize high frame per second without fuzzy in Long baselines asynchronous underwater acoustic alignment system
Alignment system.Number of patent application is：201110047483.7 the applying date is：2011.02.28, application publication number is：
CN102183741A, data of publication of application：2011.09.14. the invention is characterised by：In signal transmitting terminal, the form of signal is
Assembled pulse string：Affiliated assembled pulse string, cross-reference CW and LFM signals, and the frequency of front and rear pulse is different, is not reducing
Reduce impulse disturbances under conditions of frame per second；In signal receiving end, the processing method of the signal to receiving is using parallel more logical
Road adaptive notch filter combines detection, time delay and the frequency that parallel copy correlator group is respectively used to CW pulses and LFM pulses and estimated
Meter.The system architecture is complicated, and signal easily intersects, and can not meet the requirement of portable underwater sound electronic equipment low-power consumption.
The content of the invention
The purpose of the present invention be in view of the deficienciess of the prior art, provide energy expenditure it is low, a kind of simple in construction, low work(
Consume sound signal generator
In order to realize foregoing invention purpose, the technical solution adopted in the present invention is：
A kind of low-power consumption sound signal generator, including integrated electroplax, the integrated electroplax include signal processor and power management
Module, the signal processor include MSP430F1611 microcontrollers, and the MSP430F1611 microcontrollers connect DAC7611
Digital analog converter, the DAC7611 digital analog converters connect second order Butterworth LPF, and the second order Butterworth is low
Bandpass filter connects HCNR200 linear optical coupling circuits, and the power management module includes MAX1684 and MAX831 power supply modules,
The MAX1684 power supply modules are powered for digital device, and the MAX831 power supply modules are powered for analog device.
MSP430F1611 microcontrollers are 16 risc architectures, have abundant addressing system, 27 core instructions, and a large amount of simulations refer to
Make, data storage in a large amount of registers and piece, peripheral hardware in abundant piece, include precision analog comparator, hardware multiplication
Device, two class frequencys up to 8M clock module, two 16 bit timing devices with a large amount of capture/comparators, program out of control can be made
When the house dog that resets rapidly, two serial communication interface, the dozens ofs that asynchronous, synchronizations and multiple access can be achieved can the side of realization
To setting and the parallel input of interrupt function, output port etc., DAC7611 digital analog converter highest switching rates reach single
The 8bit quantified precisions of 84us, 12bit quantified precision, significantly larger than like product, the signal waveform form generated are more forced
Very, waveform quality is higher, and the intermediate zone decrease speed of second order Butterworth LPF is fast, and selecting frequency characteristic is good, and zeroth order is adopted
Sample signal plays a part of keeping recovering, and HCNR200 linear optical coupling circuit optocouplers are one kind input signal output signal
Isolated by light medium, a kind of device of amplification, interfering with each other for digital circuit and analog circuit can be effectively prevented from
Situation, make output signal undistorted.The system is unified by lithium battery power supply, and digital power system interface is 7.8V, and simulates power supply and connect
Mouth is 29V, and MAX1684 power supply modules and MAX831 power supply modules is respectively adopted to realize system power supply, MAX1684 power supply modules
Belong to the DC-DC converter of PWM step-down types, efficiency can reach 96%, and with fixed frequency mode, usual manner,
Low power mode has wider input voltage range with four kinds of different working methods of mode, MAX1684 is closed, and MAX831 is supplied
Electric module is monolithic integrated circuit formula, bipolarity, switching mode, and the DC-DC converter of pulse-width modulation type its input voltage is most
High reachable 30V, the in the present system output as analog circuit 5V power supplys.
The second order Butterworth LPF is provided with OPA2344 amplifier signal conditioning circuits.Second order Butterworth is low
The signal progress that the OPA2344 amplifiers signal conditioning circuit of bandpass filter exports to DAC7611 digital analog converters is scaling, and
Capacitance resistance forms emitter-base bandgap grading tracker, and the effect of emitter-base bandgap grading tracker is to reduce demand of the circuit to electric current, increases input resistance, increase
To the driving force of circuit, output impedance is reduced, adjusts the ratio of two resistance, it is possible to which it is appropriate that output voltage amplitude is carried out
Amplification.
The HCNR200 linear optical couplings circuit is provided with OPA2344 amplifier signal conditioning circuits.By HCNR200 linear lights
Opto-electronic conversion inside coupling circuit, the signal of output have certain decay and phase distortion, and OPA2344 amplifiers signal at this moment is adjusted
The compensation and phase compensation of circuit realiration amplitude versus frequency characte are managed, improves the quality of output waveform, reduces the frequency decay of signal.
The MAX1684 power supply modules, which are provided with, is used for the TPS73HD301 electricity that MSP430F1611 microcontrollers are individually powered
Source chip.The 5V voltage conversions of MAX1684 power supply modules into 3.3V, are supplied MSP430F1611 by TPS73HD301 power supply chips
Microcontroller uses, and avoids wasting, and reduces power consumption.
Compared with prior art, beneficial effects of the present invention are：Realize it is low in energy consumption, it is simple in construction, what signal will not intersect
Generator.
Brief description of the drawings
Fig. 1 is a kind of structural representation of low-power consumption sound signal generator.
Fig. 2 is 430F1611 micro controller modules.
Fig. 3 is that the output signal of DAC7611 digital analog converters connects the circuit of OPA2344 amplifier signal conditioning circuit devices
Figure.
Fig. 4 is the circuit diagram of 3 OPA2344 amplifier signal conditioning circuit devices of second order Butterworth LPF.
Fig. 5 is the circuit diagram that OPA2344 amplifier signal conditioning circuits device connects HCNR200 linear optical coupling circuits.
Wherein, 1 integrated electroplax, 2 signal processors, 3 power management modules, 4 MSP430F1611 microcontrollers, 5
DAC7611 digital analog converters, 6 second order Butterworth LPFs, 7 HCNR200 linear optical coupling circuits, 8 MAX1684 power supplies
Module, 9 TPS73HD301 power supply chips, 10 MAX831 power supply modules.
Embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that these embodiments are only used for
Illustrate the present invention rather than the limitation scope of the invention, after invention has been read, those skilled in the art are each to the present invention's
The modification of the kind equivalent form of value falls within the application appended claims and says the scope limited.
A kind of low-power consumption sound signal generator, including integrated electroplax 1, integrated electroplax 1 include signal processor 2 and power supply pipe
Module 3 is managed, signal processor 2 includes MSP430F1611 microcontrollers 4, the SPI serial ports singles of MSP430F1611 microcontrollers 4
8bit data signals are transmitted, 8bit data signals could complete one to the SPI Serial Port Transmissions of MSP430F1611 microcontrollers 4 twice
Secondary complete signal transmission, the complete signal transmitted twice splicing is now converted into 12bit initial data by software,
12bit data-signals are converted into analog signal by DAC7611 digital analog converters 5, because the waveform converted is step,
There are many high fdrequency components in the signal of step, DAC7611 digital analog converters 5 will convert into analog signal transmission to two in frequency domain
Rank Butterworth LPF 6 is provided with OPA2344 amplifier signal conditioning circuits；The signal of output rear step type ripple after filtering
Shape disappears, and filtered signal is sent into HCNR200 linear optical couplings circuit 7 carries out the amplification of high-power driving module energy so as to reach
To driving underwater sound transducing.Power management module 2 includes MAX1684 power supply modules 8 and MAX831 power supply modules 10, DAC7611 numbers
Electrodeless electric capacity C6 in weighted-voltage D/A converter 5, electrodeless electric capacity C7, resistance R2, electrodeless electric capacity C9 in second order Butterworth LPF 6,
Electrochemical capacitor C10, resistance R8, resistance R13, resistance R18, resistance R22, resistance R23, resistance R27, resistance R31, electrodeless electric capacity
C16, electrochemical capacitor C18 are connected to digital device power supply MAX1684 power supply modules 8, electricity in HCNR200 linear optical couplings circuit 7
Resistance R15 is connected to digital device power supply MAX1684 power supply modules 8, resistance R16 in HCNR200 linear optical couplings circuit 7, resistance
R17, resistance R34, electrodeless electric capacity C19, electrodeless electric capacity C20, electrochemical capacitor C21, electrochemical capacitor C22 are connected to analog circuit
MAX831 power supply modules 10, TPS73HD301 power supply chips 9 into 3.3V, supply the 5V voltage conversions of MAX1684 power supply modules 8
MSP430F1611 microcontrollers 4 use.
During present invention work, DVcc pins connection electrodeless electric capacity C1 one end of MSP430F1611 microcontrollers 4, electrodeless electricity
Hold C2 one end and the 3.3V voltages of the power supply of TPS73HD301 power supply chips 9, the electrodeless electric capacity C1 other ends are another with electrode capacitance C2's
One end connects digital circuit ground point, the P3.1/SIMOO/SDA pins connection resistance R50's of MSP430F1611 microcontrollers 4
One end, the 3.3V voltages of the resistance R50 power supply of other end connection TPS73HD301 power supply chips 9, MSP430F1611 microcontrollers
4 P3.3/UCLK0/SCL pins connection resistance R49 one end, resistance R49 other end connection TPS73HD301 power supply chips 9
The 3.3V voltages of power supply, the LD of the P3.4/UTXDO pins connection DAC7611 digital analog converters 5 of MSP430F1611 microcontrollers 4
Pin, the CS pins of the P3.5/URXDO pins connection DAC7611 digital analog converters 5 of MSP430F1611 microcontrollers 4,
The SDI pins of the P5.1/SIMO1 pins connection DAC7611 digital analog converters 5 of MSP430F1611 microcontrollers 4,
The P5.3/UCLK1 pins connection DAC7611 digital analog converter CLK pins of MSP430F1611 microcontrollers 4, DAC7611 digital-to-analogues
Vdd pins connection electrodeless electric capacity C6 one end of converter 5, electrodeless electric capacity C7 one end and is supplied for digital device power supply MAX1684
The electric power supply of module 8 5V voltages, electrodeless electric capacity C6 one end other ends and the electrode capacitance C7 other ends are grounded, DAC7611 digital-to-analogue conversions
CLR pins connection electrodeless electric capacity C6 one end of device 5, electrodeless electric capacity C7 one end and for digital device power supply MAX1684 power supply moulds
The power supply 5V voltages of block 8, the GND pin of DAC7611 digital analog converters 5 connect digital circuit ground point, MSP430F1611 microcontrollers
Single is inputted 8bit data signals by device 4 by pin, is transmitted a complete signal at twice and is converted into by software splicing
12bit data-signals are converted into analog signal by 12bit initial data, DAC7611 digital analog converters 5, due to DAC7611 numbers
The waveform that weighted-voltage D/A converter 5 converts is step, and the signal of step has many high fdrequency components, DAC7611 in frequency domain
The electrochemical capacitor C8 negative terminals of the Vout pins connection OPA2344 amplifier signal conditioning circuits of digital analog converter 5, electrochemical capacitor C8 is just
End is by resistance R4 one end, and the resistance R4 other end is connected with resistance R2 one end, resistance R3 one end, and the one of resistance R5
End, resistance R6 one end, the resistance R2 other end are connected with for the power supply 5V electricity of digital device power supply MAX1684 power supply modules 8
Pressure, resistance R3 other end access digital circuit ground point, resistance R6 other end access digital circuit ground point, resistance R5
Other end concatenation operation amplifier F1A anode input interface, operational amplifier F1A negative terminal input interface connection resistance R7
One end, operational amplifier F1A anode power interface accesses powers 5V for digital device power supply MAX1684 power supply modules 8
Voltage, electrodeless electric capacity C9 one end, electrochemical capacitor C10 one end, the electrodeless electric capacity C9 other end and electrochemical capacitor C10's is another
Digital circuit ground point, operational amplifier F1A negative terminal power interface access digital circuit ground point, operation amplifier are accessed in end
The device F1A output interface connection R7 other end and connection resistance R9 one end, pass through electrochemical capacitor C8, resistance R7 and fortune here
Calculate amplifier F1A and form emitter-base bandgap grading tracker, emitter-base bandgap grading tracker reduces the demand to higher level's circuit output current, increases to rear class electricity
The driving force on road, output impedance is reduced, the signal of output synchronously follows the output signal of higher level's circuit and changed, according to formula
The ratio of regulation resistance, appropriate amplification, resistance R9 other end concatenation operation amplifier can be carried out to the voltage amplitude of output
F1B negative terminal input interface and resistance R10 one end, operational amplifier F1B anode input interface connection resistance R8 one end,
The resistance R8 other end is connected to the power supply 2.5V voltages of digital device power supply MAX1684 power supply modules 8, operational amplifier F1B
The output interface connection resistance R10 other end and connection resistance R11 one end, by resistance R9, resistance R10 and operation amplifier
Device F1B composition amplifying circuits, resistance R11 other end connection resistance R24 one end, the resistance R24 other ends are connected with electricity
Hinder the negative terminal input interface of R25 one end, resistance R30 one end and operational amplifier F2A, operational amplifier F2A anode input
Interface access resistance R23 one end, resistance R22 one end and resistance R26 one end, the resistance R22 other end and resistance R23's
The other end is connected to the power supply 2.5V voltages of digital device power supply MAX1684 power supply modules 8, operational amplifier F2A anode electricity
Source interface connects electrodeless electric capacity C12, electrochemical capacitor C13 and is powered 5V electricity for digital device power supply MAX1684 power supply modules 8
Pressure, electrodeless electric capacity C12 and electrochemical capacitor C13 connect digital circuit ground point, and operational amplifier F2A negative terminal power interface connects number
Word circuit ground point, the operational amplifier F2A output interface connection resistance R25 other ends, resistance R28 one end and resistance R29
One end, the resistance R28 other end connection resistance R29 other end, electrodeless electric capacity C14 one end and operational amplifier F2B's
Negative terminal input interface, operational amplifier F2B anode input interface connection resistance R27 one end, resistance R27 other end connection
It is electrodeless for the power supply 2.5V voltages of digital device power supply MAX1684 power supply modules 8, operational amplifier F2B output interface connection
The electric capacity C14 other end, the resistance R26 other end, resistance R13 one end and resistance R14 one end, the resistance R13 other end
Connect the resistance R14 other end, electrodeless electric capacity C17 one end and operational amplifier F3A negative terminal input interface, operational amplifier
F3A anode input interface connection resistance R31 one end, the resistance R31 other end are connected to digital device power supply MAX1684
The power supply 2.5V voltages of power supply module 8, operational amplifier the F3A connection of anode power interface electrodeless electric capacity C16, electrochemical capacitor C18
With for the power supply 5V voltages of digital device power supply MAX1684 power supply modules 8, electrodeless electric capacity C16 and electrochemical capacitor C18 connect numeral
Circuit ground point, operational amplifier F3A negative terminal power interface connect digital circuit ground point, and operational amplifier F3A output connects
The mouth connection electrodeless electric capacity C17 other end, operational amplifier F2A, operational amplifier F2B and operational amplifier F3A realize low pass
Filter function, single power consumption of OPA2344 signal processing circuits only only has 1mW or so in second order Butterworth low pass ripple 6, and three
Individual chip total power consumption is no more than 4mW, and rear step type waveform disappears the signal of output after filtering, the resistance R30 other end and company
The PDK1 pins of operational amplifier F3B anodes input interface and HCNR200 linear optical couplings circuit 7 are connect, operational amplifier F3B's is negative
Hold input interface connection resistance R37 one end and resistance R32 one end, resistance R32 other end connection resistance R15 one end and
Resistance R33 one end, the resistance R15 other end is connected to the power supply 5V voltages of digital device power supply MAX1684 power supply modules 8,
Resistance R33 other end ground connection, the PNA1 pins of resistance R37 other end connection HCNR200 linear optical couplings circuit 7, computing are put
Big device F3B output interface connection resistance R36 one end, the resistance R37 other end, operational amplifier F3B form negative-feedback branch
Road, so as to which the output signal played to wave filter carries out necessarily scaling, to reach HCNR200 linear optical couplings circuit 7
Input requirements, one end of NPN1 triodes are connected to the power supply 2.5V voltages of digital device power supply MAX1684 power supply modules 8 and electricity
R12 one end is hindered, the resistance R12 other end is used for the power supply 5V voltages of digital device power supply MAX1684 power supply modules 8, NPN1 tri-
The other end access digital circuit ground point of pole pipe and electrodeless electric capacity C15 one end, the electrodeless electric capacity C15 other end are connected to
The power supply 2.5V voltages of digital device power supply MAX1684 power supply modules 8, the LEDK pins access of HCNR200 linear optical couplings circuit 7
Digital circuit ground point, the PDA2 pin concatenation operation amplifiers F4A of HCNR200 linear optical couplings circuit 7 anode input interface
With resistance R39 one end, resistance R39 other end connection resistance R16 one end and resistance R41 one end, resistance R16's is another
End is connected to the power supply 5V voltages of analog device power supply MAX831 power supply modules 10, resistance R41 other end access analog circuit
Earth point, the PDK2 pin concatenation operation amplifiers F4A of HCNR200 linear optical couplings circuit 7 negative terminal input interface, resistance R40
One end and electrodeless electric capacity C11 one end, operational amplifier F4A anodes power interface connection electrodeless electric capacity C20 one end, electrolysis
Electric capacity C21 one end and powered 5V voltages for analog device power supply MAX831 power supply modules 10, the electrodeless electric capacity C20 other ends and
The electrochemical capacitor C21 other ends connect analog circuit earth point, and operational amplifier F4A negative terminal power interfaces connect analog circuit ground connection
Point, an operational amplifier F4A output interfaces connection resistance R40 another end, the electrodeless electric capacity C11 other end and the one of resistance R35
End, resistance R35 other end operational amplifier F4B negative terminal input interface and resistance R38 one end, operational amplifier F4B's
Anode input interface connects one end of resistance R34, and the other end of resistance R34 is connected to analog device power supply MAX831 power supply moulds
Block 10 is powered 2.5V voltages, the operational amplifier F4B output interface connection resistance R38 other end and operational amplifier F5A's
Anode input interface, operational amplifier F5A negative terminal input interface, operational amplifier F5A anodes power interface connect electrodeless electricity
Hold C19 one end, electrochemical capacitor C22 one end and powered 5V voltages for analog device power supply MAX831 power supply modules 10, nothing
The electrode capacitance C19 other ends and the electrochemical capacitor C22 other ends connect analog circuit earth point, and operational amplifier F5A negative terminal power supplys connect
Mouth connects analog circuit earth point, operational amplifier F5A output interface concatenation operation amplifiers F5A negative terminal input interface and electrodeless
Electric capacity C23 one end, electrodeless electric capacity C23 another termination analog circuit earth point, HCNR200 linear optical couplings circuit 7 connect
NPN2 triodes, one end of NPN2 triodes be connected to analog device power supply MAX831 power supply modules 10 power 2.5V voltages and
Resistance R17 one end, the resistance R17 other end are connected to the power supply 5V voltages of analog device power supply MAX831 power supply modules 10,
The other end access analog circuit earth point of NPN2 triodes and electrodeless electric capacity C24 one end, the electrodeless electric capacity C24 other end connect
Connect for the power supply 2.5V voltages of analog device power supply MAX831 power supply modules 10, signal is by HCNR200 linear optical couplings circuit 7
The conversion of portion's electrical-optical-electrical, the signal of output have decay and phase distortion, at this moment by output signal by operational amplifier F4A,
Operational amplifier F4B and operational amplifier F5A forms low pass filter, can realize the compensation and phase compensation of amplitude versus frequency characte,
So as to improve the quality of output waveform, the frequency decay of signal is reduced as far as possible, and the connection of digital circuit and analog circuit is
Perplex the classic problem of Electronics Engineer, how to effectively reduce crosstalk while ensure that the transmission quality of signal is designer
The big problem considered is needed, has used HCNR200 linear optical couplings circuit 7 effectively to enter digital display circuit and simulation system
Go connection, avoid signal interference between the two.
Claims (4)
1. a kind of low-power consumption sound signal generator, including integrated electroplax, the integrated electroplax include signal processor and power supply pipe
Manage module, it is characterised in that：The signal processor includes MSP430F1611 microcontrollers, the MSP430F1611 microcontrollers
Device connects DAC7611 digital analog converters, and the DAC7611 digital analog converters connect second order Butterworth LPF, described
Second order Butterworth LPF connects HCNR200 linear optical coupling circuits, and the power management module is powered including MAX1684
Module and MAX831 power supply modules, the MAX1684 power supply modules are powered for digital device, and the MAX831 power supply modules are used
Powered in analog device.
A kind of 2. low-power consumption sound signal generator according to claim 1, it is characterised in that：The second order Butterworth is low
Bandpass filter is provided with OPA2344 amplifier signal conditioning circuits.
A kind of 3. low-power consumption sound signal generator according to claim 1, it is characterised in that：The HCNR200 linear lights
Coupling circuit is provided with OPA2344 amplifier signal conditioning circuits.
A kind of 4. low-power consumption sound signal generator according to claim 1, it is characterised in that：The MAX1684 power supplies mould
Block, which is provided with, is used for the TPS73HD301 power supply chips that MSP430F1611 microcontrollers are individually powered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710003264.6A CN107770678A (en) | 2017-01-04 | 2017-01-04 | A kind of low-power consumption sound signal generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710003264.6A CN107770678A (en) | 2017-01-04 | 2017-01-04 | A kind of low-power consumption sound signal generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107770678A true CN107770678A (en) | 2018-03-06 |
Family
ID=61264901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710003264.6A Pending CN107770678A (en) | 2017-01-04 | 2017-01-04 | A kind of low-power consumption sound signal generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107770678A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101692044A (en) * | 2009-10-12 | 2010-04-07 | 浙江大学 | Detection circuit of on-site underwater fluorescent probe |
| CN102360192A (en) * | 2011-09-08 | 2012-02-22 | 杭州电子科技大学 | Underwater multi-channel data acquisition circuit |
| CN103752413A (en) * | 2014-01-24 | 2014-04-30 | 镇江天力变压器有限公司 | Secondary voltage conditioning circuit of high frequency dust removal power supply |
-
2017
- 2017-01-04 CN CN201710003264.6A patent/CN107770678A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101692044A (en) * | 2009-10-12 | 2010-04-07 | 浙江大学 | Detection circuit of on-site underwater fluorescent probe |
| CN102360192A (en) * | 2011-09-08 | 2012-02-22 | 杭州电子科技大学 | Underwater multi-channel data acquisition circuit |
| CN103752413A (en) * | 2014-01-24 | 2014-04-30 | 镇江天力变压器有限公司 | Secondary voltage conditioning circuit of high frequency dust removal power supply |
Non-Patent Citations (1)
| Title |
|---|
| 许志恒: "水声主被动定位系统声信标设计", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103744467A (en) | Maximum power tracking device for solar cell of miniature satellite power system and control method thereof | |
| CN104122851A (en) | Multichannel large-dynamic range data acquisition system | |
| CN109189714B (en) | Arria10 FPGA-based signal processing system with double processing nodes | |
| CN106209255A (en) | Optical module and laser bias circuit Poewr control method thereof | |
| CN111175601A (en) | Modular functional test system | |
| CN202394430U (en) | Singlechip experiment development board | |
| CN213399259U (en) | STM 32-based PWM output system | |
| CN107770678A (en) | A kind of low-power consumption sound signal generator | |
| CN202522621U (en) | Low-power consumption intelligent electric meter based on Ethernet passive optical network | |
| CN103762938B (en) | A kind of intelligent electric power management circuit being applicable to optical fiber energy supplying system | |
| CN110149045A (en) | A kind of high energy efficiency switching capacity power adapter | |
| CN212137668U (en) | Novel intelligent communication and electric energy pulse acquisition unit | |
| CN203722575U (en) | Intelligent power management circuit suitable for optical fiber energy supply system | |
| CN203632291U (en) | 25 serially-connected power lithium battery management acquisition module | |
| CN216355996U (en) | Energy router and energy control system | |
| CN207965576U (en) | Data collector based on FPGA algorithms | |
| CN206820755U (en) | A kind of optical module based on XFP transmission over long distances | |
| CN107013208A (en) | A kind of NEXT series of products MSP430 telecommunication systems | |
| CN221058276U (en) | Extensible hard node output circuit | |
| CN216486057U (en) | Programmable analog-to-passive PWM power control isolation amplifier | |
| CN104122591A (en) | Double-frequency current signal transmitter in marine electric detection system | |
| CN103424598A (en) | Output voltage detection circuit for inverter system and inverter system | |
| CN220798296U (en) | Modbus-based network communication device | |
| CN206161701U (en) | PCM signal generating device | |
| CN218771779U (en) | Fire power supply monitoring relay circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180306 |
|
| WD01 | Invention patent application deemed withdrawn after publication |