CN107255967A - A kind of High-voltage Signal Generator regulated and controled suitable for waveform - Google Patents
A kind of High-voltage Signal Generator regulated and controled suitable for waveform Download PDFInfo
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- CN107255967A CN107255967A CN201710486218.6A CN201710486218A CN107255967A CN 107255967 A CN107255967 A CN 107255967A CN 201710486218 A CN201710486218 A CN 201710486218A CN 107255967 A CN107255967 A CN 107255967A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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Abstract
The invention belongs to signal generating apparatus association area, and disclose a kind of High-voltage Signal Generator regulated and controled suitable for waveform, including microcontroller main control module, DDS signal generating modules, input stage operation amplifier module, optical coupling isolator, AB class cascade power amplifier modules and external signal input module, while being further equipped with Voltage Feedback correcting circuit and sampling feedback circuit.Wherein the microcontroller main control module produces the control word of DDS signals to desired signal, the waveform signal of assigned frequency and amplitude is produced by DDS signal generating modules, then signal is amplified to KV level high pressure by amplification module.Pass through the present invention, existing high-voltage amplifier, which can be broken through, can only amplify the simple function of voltage, acquisition compact conformation, stability are strong, precision is high, but also can produce the high pressure generator of all kinds of specified waveform signals of required frequency and amplitude, the features such as being provided simultaneously with being easy to manipulation, strong applicability.
Description
Technical field
The invention belongs to signal generating apparatus association area, believe more particularly, to a kind of suitable for the high pressure that waveform regulates and controls
Number generator, it can export the high pressure of KV level with compact conformation, the mode that stability is strong and precision is high, while can produce
All kinds of specified waveform signals of required frequency and amplitude.
Background technology
Make in the printing of flexible electronic EFI, in the field such as electrostatic spinning, photoelectric tube and spectrometer, it will usually use high pressure
Signal generator, so as to realize high voltage amplitude output and external signal triggering etc. function.For example, in flexible electronic EFI print
In technique, it exports adjustable high direct voltage or output bias high voltage and superimposed with the function signal of amplification, thus uses
In the open loop of all kinds of vision-based detection signals or the accurate control process of closed loop.
High-voltage Signal Generator passes through the development of decades, develops into number via discrete Analogous Integrated Electronic Circuits originally
Word signal generator, the latter realizes that signal is produced by digitized chips such as microcontrollers, and passes through triode, amplifier etc.
Realize that signal amplifies.For example, CN1937879A discloses a kind of digital low power consumption high-precision high voltage generator, pass through microcontroller
Device control system and PWM ripples constitute close loop control circuit, realize stable high voltage；Disclose a kind of based on micro- in CN205844830U
The signal generator of controller, using micro controller module as computing unit, mathematical computations are carried out to the signal for needing to produce,
The signal of assigned frequency and amplitude can be produced.
However, further investigations have shown that, the High-voltage Signal Generator of above-mentioned Pure numerical form is typically only capable to play amplification electricity
The function of pressure, and can not export for the specific waveforms of process requirements or line frequency and width easily are entered to the waveform exported
The regulation and control of the parameters such as value；In addition, High-voltage Signal Generator of the prior art generally complicated, manufacturing cost is high, it is difficult to suitable
High precision applications occasion for the conveying of flexible electronic reel-to-reel, EFI print etc.Correspondingly, this area, which is needed badly, makes further
Improve, more preferably to meet growing actual demand.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of high pressure letter regulated and controled suitable for waveform
Number generator, wherein passing through the internal structure composition and its connected mode to the High-voltage Signal Generator, especially multiple keys
The particular circuit configurations of component such as input stage operation amplifier module, AB class cascade power amplifier modules etc. are made further
Research and design, accordingly not only total more compact and reasonable, stability and precision be more compared with existing high pressure generator
Height, but also can be while the high pressure of KV level is exported, generation is directed to the specific waveforms of process requirements and to needed for it
The parameter such as frequency and amplitude carries out Effective Regulation, is therefore particularly suitable for the open loop or closed loop quality control of flexible electronic preparation etc
The application scenarios such as system.
To achieve the above object, it is proposed, according to the invention, there is provided a kind of High-voltage Signal Generator regulated and controled suitable for waveform, the height
Signal generator is pressed to include microcontroller main control module, DDS signal generating modules, input stage operation amplifier module, light-coupled isolation
Device, AB class cascade power amplifier modules and external signal input module, it is characterised in that：
The input of the microcontroller main control module is communicated with host computer, and based on the spy set by the host computer
Standing wave graphic data produces corresponding control word, is then sent via its output end to the input of the DDS signal generating modules
End, the Wave data includes the information such as type of waveform, waveform frequency and waveforms amplitude；
The control word that the DDS signal generating modules are sent according to the microcontroller main control module sends required original ripple
Shape signal, then sends to the input stage operation amplifier module via its output end；The Raw waveform signals pass sequentially through this
Input stage operation amplifier module, the optical coupling isolator and the AB classes cascade power amplifier module, thus amplification modulation
As required high voltage direct current, and final output and effect are to loading；
The external signal input module equally accesses the input stage operation amplifier module, and for being transported to the input stage
Calculate the outside Regulate signal of amplification module input；
In addition, above-mentioned High-voltage Signal Generator is further equipped with Voltage Feedback correcting circuit and sampling feedback circuit, wherein should
The input of Voltage Feedback correcting circuit is connected with the output end of the AB classes cascade power amplifier module, its output end
The input stage operation amplifier module is then connected to, and closed loop feedback is performed for the amplifier section to the high voltage direct current,
Thus the high voltage direct current of the AB classes cascade power amplifier module final output is corrected；The sampling feedback circuit is then to making
Sampled with the high voltage direct current to output loading, and by being inputted after AD signal conditions to the microcontroller main control module
AD input ports, feedback and the conditioning of sampled signal are then completed by the microcontroller main control module, while sending to host computer
Monitored.
As it is further preferred that for the input stage operation amplifier module, it is preferred to use two-stage buffering
Operational amplifier structural form, wherein：
The positive input port of first order operational amplifier is connected with input pin, and its negative sense input port is in series with the first electricity
Resistance and then ground connection；In addition, in the first order operational amplifier) output end and negative sense input port between be parallel with second resistance,
And the second resistance and first resistor collectively form a closed feedback loop, the work of signal buffering and conditioning is thus played
With；
The positive input port of second level operational amplifier is connected to the output end of the first order operational amplifier, simultaneously
Access the external signal input module；In addition, its negative sense input port and the output end phase of the Voltage Feedback correcting circuit
Even, and by the positive and negative magnitude of voltage between input port value of feedback relatively is obtained, then by this value of feedback via the second level
The output end of operational amplifier is sent to the input of the optical coupling isolator.
As it is further preferred that for the AB classes cascade power amplifier module, it is preferably by the metal-oxide-semiconductor of two-stage
Namely first order metal-oxide-semiconductor and second level metal-oxide-semiconductor are collectively constituted, and the two metal-oxide-semiconductors are serially connected as drain electrode amplifying circuit,
Wherein：
The source electrode of the first order metal-oxide-semiconductor is connected with the negative pole of the high voltage direct current, and it is right to be in series with the first adjustable resistance
After be grounded；Its drain electrode is connected with the source electrode of the second level metal-oxide-semiconductor, and is in series with the second adjustable resistance；Its grid is then
It is connected with a voltage-regulator diode；
The grid and source electrode of the second level metal-oxide-semiconductor are arranged with the first pull-up resistor, the second pull-up resistor and the 3rd respectively
Pull-up resistor, then together connects another voltage-regulator diode；In addition, the drain electrode of the second level metal-oxide-semiconductor there also is provided the first source electrode
Output circuit and the second source follower circuit, and drain electrode and the high voltage direct current of wherein described first source follower circuit
The positive pole of signal is connected, and the source electrode of first source follower circuit is then used to export final high voltage direct current.
As it is further preferred that the DDS signal generating modules are preferred to use DDS chips and peripheral circuit builds jointly
Form, and be connected by parallel data mouthful and address mouth with the GPIO port of the microcontroller main control module.
As it is further preferred that the DDS chips are by chip pin output signal, the chip pin is in series with the 3rd
Resistance and then ground connection；In addition, the output port of the DDS chips has been sequentially connected in series the first electric capacity, the second electric capacity, the 3rd electric capacity and
Four electric capacity, and the first inductance, second are parallel with successively at first electric capacity, the second electric capacity, the 3rd respective two ends of electric capacity
Inductance and the 3rd inductance, while being parallel with the 5th electric capacity, the 6th electric capacity, the 7th electric capacity and successively at the two ends of these three inductance
Eight electric capacity.
As it is further preferred that the Voltage Feedback correcting circuit preferably form the structure of negative voltage feedback circuit-closing control
Make, and be preferred to use correction or lag mode and perform operation, its process is as follows：First in the output end of the Voltage Feedback correcting circuit
Suitable electric resistance partial pressure is obtained, the corrective network being in series by multiple electric capacity is then sent to, and at each electric capacity two ends
Respective suitable resistance in parallel；The feedback signal of acquisition is finally sent into the input stage operation amplifier module.
As it is further preferred that the high voltage direct current of above-mentioned High-voltage Signal Generator final output is more than kilovolt.
As it is further preferred that above-mentioned High-voltage Signal Generator is applied to open loop or the closed loop quality that flexible electronic is manufactured
Control occasion.
In general, by the contemplated above technical scheme of the present invention, not only total is more compared with prior art
Compact and reasonable, stability and precision are higher, but also can be particularly useful to produce pin while the high pressure of KV level is exported
All kinds of specific waveforms to process requirements and Effective Regulation is carried out to parameters such as its required frequencies and amplitude, be provided simultaneously with being easy to
The features such as manipulation, strong applicability and high cost performance, it is therefore particularly suitable for open loop or the closed loop quality of flexible electronic preparation etc
The application scenarios such as control.
Brief description of the drawings
Fig. 1 is the unitary construction schematic diagram according to the High-voltage Signal Generator constructed by the present invention；
Fig. 2 is for showing the circuit theory diagrams communicated between the microcontroller in Fig. 1 and host computer；
Fig. 3 is the fundamental diagram for showing DDS signal generating modules shown in Fig. 1；
Fig. 4 is the exemplary internal organigram for more specifically showing DDS signal generating modules；
Fig. 5 be designed according to a preferred embodiment of the invention, the specific configuration of input stage operation amplifier module is shown
It is intended to；
Fig. 6 be designed according to another preferred embodiment of the invention, AB class cascade power amplification circuits it is specific
Organigram；
Fig. 7 is the exemplary internal organigram for more specifically showing sampling feedback circuit shown in Fig. 1；
Fig. 8 is the exemplary internal organigram for more specifically showing AD signal conditioning circuits shown in Fig. 1.
In all of the figs, identical reference is used for representing identical element or structure, wherein：
1- microcontroller main control modules, 2-DDS signal generating modules, 3- external signal input modules, 4- input stage computings
Amplification module, 5- optical coupling isolators, 6-AB class cascade power amplifier modules, 7-AD signal conditioning circuits, 8- Voltage Feedbacks
Correcting circuit, 9- sampling feedback circuits
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 appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Not constituting conflict each other can just be mutually combined.
Fig. 1 is the unitary construction schematic diagram according to the High-voltage Signal Generator constructed by the present invention.As shown in figure 1, the height
Signal generator is pressed mainly to include microcontroller main control module 1, DDS signal generating modules 2, input stage operation amplifier module 4, light
The functional modules such as coupling isolator 5, AB class cascades power amplifier module 6 and external signal input module 3, and be further equipped with
Voltage Feedback correcting circuit 8 and sampling feedback circuit 9.
In other words, it is divided into man-machine interaction part, signal generation point, signal from integral device from the point of view of function division to put
Major part and signal feedback fraction, specific namely signal generation point complete the generation of signal waveform；Man-machine interaction part is complete
Into the setting of the information such as predetermined waveform amplitude, frequency, biasing, while realizing the work(such as circuit parameter is shown and voltage x current is monitored
Energy；The amplification that signal amplifying part point completes signal voltage rises to required high pressure；Signal feedback fraction completes load end output letter
Number collection, feedback and nurse one's health.These components will specifically be illustrated one by one below.
The input of microcontroller main control module 1 is communicated with host computer, and host computer realizes human-computer interaction function, and will
The information such as setting signal waveform, frequency and amplitude are supplied to microcontroller main control module；Specifically that is, microcontroller main control module
Corresponding control word is produced based on the specific waveforms data set by the host computer, is then sent via its output end to described
The input of DDS signal generating modules 2, the Wave data includes the information such as type of waveform, waveform frequency and waveforms amplitude.
DDS (Direct Digital Synthesis, direct signal frequency synthesis) signal generating module 2 is according to described micro-
The control word that control main control module 1 is sent sends required Raw waveform signals, is then sent via its output end to described defeated
Enter a grade operation amplifier module 4；The Raw waveform signals pass sequentially through input stage operation amplifier module 4, optical coupling isolator 5 and the AB
Class cascade power amplifier module 6, thus amplification modulation turns into required high voltage direct current, and final output and acts on to defeated
Go out load.
In the process, the closed loop feedback of voltage amplifying part can be also completed by Voltage Feedback correcting circuit 8, is corrected defeated
The signal waveform gone out.In addition, can also complete the collection to load terminal voltage electric current by sampling feedback circuit 9, and pass through AD numbers
Mould is changed and AD signal conditioning circuits 7, is inputted to the AD input ports of microcontroller main control module 1, by microcontroller master control mould
Block 1 is carried out after computing and conditioning, is sent data in host computer and is shown.
More specifically, host computer can for example be completed by QT platform developments, microcontroller main control module 1 for example can be by
TMS320F28355 microcontrollers main control chip and its peripheral circuit composition, and include RS232 communication interfaces, AD input connect
Mouth, DDS Wave datas, address output interface.As shown in Fig. 2 its circuit may be set to 232 communication interface circuits, it is thus complete
Into the data exchange of microcontroller main control module 1 and host computer, its chip can select SP3232 energy, SP3232 and microcontroller master
SCITXDA with the SCIRXDA pins of control module 1 are connected.Output end can be then connected using DB9 joints with host computer.
Referring to Fig. 3, according to a preferred embodiment of the present invention, DDS signal generating modules 2 can for example use AD9854 types
Number DDS chips and its peripheral circuit are built, and can pass through parallel data mouthful such as D0-D7, address mouth A0-A5 and microcontroller
GPIO port XD0-XD7, XA0-XA5 of main control module are connected in parallel, and AD9854 is preferred to use external crystal oscillator mode, XTAL30M
It is connected with REFCLOCK ports, FSK/BPSK/HOLD, SHAPED KEYING, WRB, RDB, lOUP ports are respectively at microcontroller
GPIOD0/D1/D3/D4/D5/D6/E0 on main control module is connected.VINN ports use variable resistor R14 and low resistance resistance
R12 and R15 concatenations, by R14 come adjustment circuit partial parameters.
According to another preferred embodiment of the present invention, also the related circuit design modes of the DDS chips is made excellent
Change.Specifically as shown in Figure 4, the DDS chips are in series with 3rd resistor R17 by chip pin output signal, the chip pin
Then it is grounded；In addition, the output port of the DDS chips has been sequentially connected in series the first electric capacity C35, the second electric capacity C36, the 3rd electric capacity
C37 and the 4th electric capacity C38, and it is in parallel successively at the first electric capacity C35, the second electric capacity C36, the 3rd respective two ends of electric capacity C37
There are the first inductance L9, the second inductance L10 and the 3rd inductance L11, while being parallel with the 5th electricity successively at the two ends of these three inductance
Hold C43, the 6th electric capacity C44, the 7th electric capacity C45 and the 8th electric capacity C46, electric capacity C43, C44, C45 and C46 other end ground connection.
As can be seen that input stage operation amplifier module 4, optical coupling isolator 5, the and of AB class cascades power amplifier module 6
External signal input module 3 together constitutes the core circuit of this equipment.Below they are provided with specific specification again.
As one of key improvements of the present invention, according to a preferred embodiment of the present invention, as shown in Figure 5, for
For the input stage operation amplifier module 4, it is preferred to use the operational amplifier structural form of two-stage buffering, wherein, first
Level operational amplifier OP2 positive input port is connected with input pin IOUT1IN, and its negative sense input port is in series with first resistor
R58 and then ground connection；In addition, being parallel with the second electricity between first order operational amplifier OP2 output end and negative sense input port
R56 is hindered, and second resistance R56 and first resistor R58 collectively form a closed feedback loop, thus play signal buffering
With the effect of conditioning.
Rear class is provided with second level operational amplifier OP1 in the input stage operation amplifier module 4, and its positive input port connects
The output end of the first order operational amplifier OP2 is connected to, while accessing the external signal input module 3；In addition, it
Negative sense input port is connected with the output end Feed- of the Voltage Feedback correcting circuit 8, and by positive and negative between input port
Magnitude of voltage relatively obtains value of feedback, then by this value of feedback via second level operational amplifier OP1 output end send to
The input of the optical coupling isolator 5, can additionally connect the less resistance of resistance.
In addition, triode output source class one end of optical coupling isolator 5 can connect+12V power supplys, output drain can be common with AB classes
The grid of input stage metal-oxide-semiconductor Q4 in the common grid power amplifier module in source is connected.
As another key improvements of the present invention, according to another preferred embodiment of the present invention, as shown in fig. 6, for institute
AB class cascades power amplifier module 6 is stated, it is preferably total to by the metal-oxide-semiconductor namely first order metal-oxide-semiconductor and second level metal-oxide-semiconductor of two-stage
Constitute together, and the two metal-oxide-semiconductors are serially connected as drain electrode amplifying circuit, wherein：
First order metal-oxide-semiconductor Q4 source electrode is connected with the negative pole of the high voltage direct current, and is in series with the first adjustable resistance
R48 and then ground connection；Its drain electrode is connected with the source electrode of the second level metal-oxide-semiconductor Q3, and is in series with the second adjustable resistance R44；
Its grid is then connected with a voltage-regulator diode；
Second level metal-oxide-semiconductor Q3 grid and source electrode is arranged with the first pull-up resistor R40, the second pull-up resistor respectively
R39 and the 3rd pull-up resistor R41, then together connects another voltage-regulator diode；In addition, second level metal-oxide-semiconductor Q3 drain electrode is also
It is disposed with the first source follower circuit Q1 and the second source follower circuit Q2, and wherein described first source follower circuit Q1
Drain electrode is connected with the positive pole of the HVDC electric signal, and first source follower circuit Q1 source electrode is then used to export final
High voltage direct current.
Operationally, when Q4 gate input voltages rise, Q3 and Q4 drain currents reduce, and less than being determined by R39 and R41
Fixed quiescent current, its residual current rises Q2 grid voltages Q2 gate capacitance charges, the Q2's exported as amplifier
Source voltage follows rising；When the output voltage drops, Q3, Q4 drain current are more than quiescent current, then draw Q2 grid voltages
Less than source voltage, Q2 shut-offs D10 conductings simultaneously, Q3 drain voltage declines, while passing to output end by D10, makes output
Voltage follow Q3 drain voltages decline.
According to another preferred embodiment of the present invention, the Voltage Feedback correcting circuit 8 preferably form negative voltage feedback
The construction of closed-loop control, and be preferred to use correction or lag mode and perform operation, its process is as follows：Corrected first in the Voltage Feedback
The output end of circuit obtains suitable electric resistance partial pressure, is then sent to the corrective network being in series by multiple electric capacity, and
In the respective resistance in parallel suitable in each electric capacity two ends；The feedback signal of acquisition is finally sent into the input stage operation amplifier module
4。
As shown in Figure 7 and Figure 8, sampling feedback circuit 9 can preferably be produced by electric resistance partial pressure, mainly include voltage signal conditioning
Circuit is by filter circuit, programmable gain amplifier circuit, optical coupling isolation circuit, the member such as resistor voltage divider circuit and filter circuit
Part, wherein electric resistance partial pressure produce voltage signal successively with filter circuit, programmable gain amplifier circuit, light-coupled isolation electricity
Road, resistor voltage divider circuit, filter circuit connection is finally connected with the AD ports of microcontroller central controller.Wherein filtered electrical
Road is rc filter circuit；Programmable gain amplifier is PGA204, and it has four kinds of gains, respectively 1,10,100,1000；Light
Coupling is linear optical coupling HCNR201, and it can separate the high pressure of output with micro controller module 1, then is believed by AD as shown in Figure 8
In the range of the AD collection voltages that microcontroller main control module 1 is obtained after number modulate circuit 7, carried out by microcontroller main control module 1
Digital-to-analogue conversion and data analysis.
The workflow of the above-mentioned High-voltage Signal Generator according to the present invention will be described in detail below.
The data message of HT waveform needed for being inputted by computer end host computer, signal waveform type, frequency and amplitude
The Wave datas such as information send microcontroller main control module to by communication modes, and microcontroller main control module passes through interior part
Analysis, processing output waveform, frequency and amplitude information control word control DDS signal generating modules send required waveform.Again by defeated
Enter a grade operational amplification circuit module, optical coupling isolator, AB class cascade power amplifier module amplified signal waveforms to required height
Pressure, the high pressure for the stable output of method that Voltage Feedback correcting circuit is corrected by negative-feedback, sampling feedback circuit is adopted from delivery outlet
Sample, completes the collection to load terminal voltage electric current, is inputted by AD signal conditions to the AD input ports of microcontroller main control module,
After computing and conditioning, send data in host computer and monitored.
To sum up, simple according to the High-voltage Signal Generator hardware circuit of the present invention, reliably, stability is good, and precision is high；
Using micro controller module as waveshape module, sine, square wave, the triangular wave that can produce assigned frequency and amplitude are contour
Press signal；In addition, the present invention can obtain internal structure more on the premise of signal accuracy, stability, financial cost is ensured
Rationally, stability and high, the easy to use high pressure generator of precision, but also can export KV level high pressure while,
It is particularly useful to produce all kinds of specific waveforms for process requirements and the parameters such as its required frequency and amplitude is carried out effective
Regulation and control, are therefore particularly suitable for the application scenarios such as open loop or the closed loop quality control of flexible electronic preparation etc.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (8)
1. a kind of High-voltage Signal Generator regulated and controled suitable for waveform, the High-voltage Signal Generator includes microcontroller main control module
(1), DDS signal generating modules (2), input stage operation amplifier module (4), optical coupling isolator (5), AB class cascade power are put
Big module (6) and external signal input module (3), it is characterised in that：
The input of the microcontroller main control module (1) is communicated with host computer, and based on the spy set by the host computer
Standing wave graphic data produces corresponding control word, then sends defeated to the DDS signal generating modules (2) via its output end
Enter end, the Wave data includes the information such as type of waveform, waveform frequency and waveforms amplitude；
The control word that the DDS signal generating modules (2) send according to the microcontroller main control module (1) send needed for it is original
Waveform signal, then sends to the input stage operation amplifier module (4) via its output end；The Raw waveform signals lead to successively
The input stage operation amplifier module (4), the optical coupling isolator (5) and the AB classes cascade power amplifier module (6) are crossed,
Thus amplification modulation turns into required high voltage direct current, and final output and effect are extremely loaded；
The external signal input module (3) equally accesses the input stage operation amplifier module (4), and is used for the input stage
The outside Regulate signal of operation amplifier module (4) input；
In addition, above-mentioned High-voltage Signal Generator is further equipped with Voltage Feedback correcting circuit (8) and sampling feedback circuit (9), wherein
The input of the Voltage Feedback correcting circuit (8) is connected with the output end of the AB classes cascade power amplifier module (6), it
Output end be then connected to the input stage operation amplifier module (4), and held for the amplifier section to the high voltage direct current
Row closed loop feedback, thus corrects the high voltage direct current of AB classes cascade power amplifier module (6) final output；The sampling
Feedback circuit (9) is then sampled to the high voltage direct current acted on to output loading, and by being inputted after AD signal conditions to institute
The AD input ports of microcontroller main control module (1) are stated, the feedback of sampled signal is then completed by the microcontroller main control module (1)
And conditioning, monitored while sending to host computer.
2. High-voltage Signal Generator as claimed in claim 1, it is characterised in that for the input stage operation amplifier module
(4) for, it is preferred to use the operational amplifier structural form of two-stage buffering, wherein：
The positive input port of first order operational amplifier (OP2) is connected with input pin, and its negative sense input port is in series with first
Resistance (R58) and then ground connection；In addition, in parallel between the output end of the first order operational amplifier (OP2) and negative sense input port
There is second resistance (R56), and the second resistance (R56) and first resistor (R58) collectively form a closed feedback loop, by
This plays a part of signal buffering and nursed one's health；
The positive input port of second level operational amplifier (OP1) is connected to the output of the first order operational amplifier (OP2)
End, while accessing the external signal input module (3)；In addition, its negative sense input port and the Voltage Feedback correcting circuit
(8) output end is connected, and relatively obtains value of feedback by the positive and negative magnitude of voltage between input port, then feeds back this
Value is sent to the input of the optical coupling isolator (5) via the output end of the second level operational amplifier (OP1).
3. High-voltage Signal Generator as claimed in claim 1 or 2, it is characterised in that for the AB classes cascade power
Amplification module (6), it is preferably collectively constituted by the metal-oxide-semiconductor namely first order metal-oxide-semiconductor and second level metal-oxide-semiconductor of two-stage, and this two
Individual metal-oxide-semiconductor is serially connected as drain electrode amplifying circuit, wherein：
The source electrode of the first order metal-oxide-semiconductor (Q4) is connected with the negative pole of the high voltage direct current, and is in series with the first adjustable resistance
(R48) then ground connection；Its drain electrode is connected with the source electrode of the second level metal-oxide-semiconductor (Q3), and is in series with the second adjustable resistance
(R44)；Its grid is then connected with a voltage-regulator diode；
The grid and source electrode of the second level metal-oxide-semiconductor (Q3) are arranged with the first pull-up resistor (R40), the second pull-up resistor respectively
(R39) and the 3rd pull-up resistor (R41), another voltage-regulator diode is then together connected；In addition, the second level metal-oxide-semiconductor (Q3)
Drain electrode there also is provided the first source follower circuit (Q1) and the second source follower circuit (Q2), and wherein described first source electrode is defeated
The drain electrode for going out circuit (Q1) is connected with the positive pole of the HVDC electric signal, and the source electrode of first source follower circuit (Q1) is then
The final high voltage direct current for exporting.
4. the High-voltage Signal Generator as described in claim 1-3 any one, it is characterised in that mould occurs for the DDS signals
Block (2) is preferred to use DDS chips and peripheral circuit is built jointly, and passes through parallel data mouthful and address mouth and the micro-control
The GPIO port of device main control module (1) processed is connected.
5. High-voltage Signal Generator as claimed in claim 4, it is characterised in that the DDS chips are exported by chip pin
Signal, the chip pin is in series with 3rd resistor (R17) and then ground connection；In addition, the output port of the DDS chips has been sequentially connected in series
First electric capacity (C35), the second electric capacity (C36), the 3rd electric capacity (C37) and the 4th electric capacity (C38), and in first electric capacity
(C35), the second electric capacity (C36), the 3rd electric capacity (C37) respective two ends are parallel with the first inductance (L9), the second inductance successively
(L10) and the 3rd inductance (L11), while being parallel with the 5th electric capacity (C43), the 6th electric capacity successively at the two ends of these three inductance
(C44), the 7th electric capacity (C45) and the 8th electric capacity (C46).
6. the High-voltage Signal Generator as described in claim 1-5 any one, it is characterised in that the Voltage Feedback correction electricity
Road (8) preferably form the construction of negative voltage feedback circuit-closing control, and be preferred to use correction or lag mode and perform operation, its process
It is as follows：Suitable electric resistance partial pressure is obtained in the output end of the Voltage Feedback correcting circuit first, is then sent to by multiple electricity
Hold the corrective network that is in series, and in the respective suitably resistance in parallel in each electric capacity two ends；Finally by the feedback signal of acquisition
Send into the input stage operation amplifier module (4).
7. High-voltage Signal Generator as claimed in any one of claims 1 to 6, it is characterised in that above-mentioned High-voltage Signal Generator
The high voltage direct current of final output is more than kilovolt.
8. High-voltage Signal Generator as claimed in claim 7, it is characterised in that above-mentioned High-voltage Signal Generator is applied to flexibility
The open loop of electronic manufacture or closed loop quality control occasion.
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| CN114062741A (en) * | 2021-10-29 | 2022-02-18 | 威胜信息技术股份有限公司 | Square wave envelope type micro-topology signal generation system and method |
| CN114137863A (en) * | 2021-11-01 | 2022-03-04 | 太原市华纳方盛科技有限公司 | Electric quantity signal output circuit system |
| CN117762191A (en) * | 2024-02-21 | 2024-03-26 | 湖南安泰康成生物科技有限公司 | signal generator and tumor electric field therapeutic apparatus |
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| CN114062741B (en) * | 2021-10-29 | 2023-02-21 | 威胜信息技术股份有限公司 | Square wave envelope type micro-topology signal generation system and method |
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| CN117762191A (en) * | 2024-02-21 | 2024-03-26 | 湖南安泰康成生物科技有限公司 | signal generator and tumor electric field therapeutic apparatus |
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