CN211000501U - Piezoelectric nozzle driving system based on discrete component - Google Patents
Piezoelectric nozzle driving system based on discrete component Download PDFInfo
- Publication number
- CN211000501U CN211000501U CN201921807920.9U CN201921807920U CN211000501U CN 211000501 U CN211000501 U CN 211000501U CN 201921807920 U CN201921807920 U CN 201921807920U CN 211000501 U CN211000501 U CN 211000501U
- Authority
- CN
- China
- Prior art keywords
- amplification module
- resistor
- voltage amplification
- stage
- discrete component
- 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.)
- Active
Links
Images
Abstract
The utility model relates to a piezoelectric nozzle actuating system based on discrete component, including first order voltage amplification module, second level voltage amplification module and third level power amplification module, the input of first order voltage amplification module is connected with digital analog converter, the output of first order voltage amplification module with the input of second level voltage amplification module is connected, the output of second level voltage amplification module with the input of third level power amplification module is connected, the output of third level power amplification module is connected with the shower nozzle, first level voltage amplification module still is connected with zero point regulating unit, second level voltage amplification module still is connected with gain control unit. The utility model discloses a piezoelectric nozzle actuating system that discrete component constitutes carries out power amplification through the pulse waveform that tertiary amplification module will have certain slope, and this system has the characteristics that use is nimble, with low costs and the driving force is strong.
Description
Technical Field
The utility model relates to a print head drive field especially relates to a piezoelectric nozzle actuating system based on discrete component.
Background
In the field of driving a plurality of piezoelectric nozzles such as piezoelectric ink jet equipment and the like, a driving system of the piezoelectric ink jet equipment is not only used for amplifying the power of an analog waveform output by a DAC; in practical application, the requirement on the ink-jet precision is higher and higher for various application occasions, so that the analog waveform required by the spray head is flexible and variable, and the fine adjustment of analog quantities such as waveform slope, amplitude and the like is realized so as to adapt to the ink-jet requirements of various occasions and various types of ink; the output must respond to changes in the input effectively in real time for its drive system. The existing system adopts discrete components to enable a signal to have a slight slope so as to meet the power amplification, but the influence of common-mode noise and the like cannot be avoided due to the adoption of the discrete components.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a piezoelectric nozzle actuating system based on discrete component adopts discrete transistor to constitute, makes the pulse waveform who has certain slope through tertiary amplification module and carries out power amplification, adds zero point and adjusts and the gain unit is in order to satisfy piezoelectric nozzle drive purpose.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a piezoelectric nozzle actuating system based on discrete component, includes first order voltage amplification module, second level voltage amplification module and third level power amplification module, the input of first order voltage amplification module is connected with digital-to-analog converter, the output of first order voltage amplification module with the input of second level voltage amplification module is connected, the output of second level voltage amplification module with the input of third level power amplification module is connected, the output of third level power amplification module is connected with the shower nozzle, first level voltage amplification module still is connected with zero point regulating unit, second level voltage amplification module still is connected with gain adjusting unit.
By adopting the technical scheme, the mV level analog waveform output by the DAC is sent to the first level voltage amplification module for voltage amplification, so that the output voltage signal reaches 4V, a zero point adjustment unit is added in the first level voltage amplification module to compensate the distortion adjustment of a rear-level system, the signal amplified by the first level voltage amplification module enters the second level voltage amplification module, the common-mode noise is effectively inhibited through the cooperation of a gain adjustment unit and a feedback network, the output voltage of the level reaches 35V through the second level voltage amplification module, the amplified signal enters the third level power amplification module, the level is a power output level, the signal subjected to power amplification is directly output to the spray head, and the spray head is driven to work. The utility model discloses a discrete component system of constituteing can carry out power amplification with the pulse waveform of certain slope, satisfies the piezojet drive purpose, and eliminates the influence that discrete component produced through zero adjustment unit and gain adjustment unit.
Preferably, the first-stage voltage amplification module and the second-stage voltage amplification module use differential amplification.
By adopting the technical scheme, because discrete components are adopted, noise cannot be generated in the process of transmitting the analog signals below 4V, and the differential amplification is adopted, the common-mode noise can be effectively inhibited.
Preferably, the third-stage power amplification module is formed by connecting four triodes and five resistors in series and parallel.
By adopting the technical scheme, the power amplification circuit formed by the series-parallel connection of the four triodes and the five resistors can amplify the power and meet the requirement of driving the spray head.
Preferably, the zero point adjusting unit includes a variable resistor VR2, a resistor R9, a resistor R10, and a capacitor C1, the resistor VR2 is connected to the resistor R9, one end of the resistor R10 is connected to the resistor R9, the other end of the resistor R10 is grounded, one end of the capacitor C1 is connected to the resistor R9, and the other end of the capacitor C1 is grounded.
By adopting the technical scheme, the reference voltage is divided by the variable resistor VR2 and then is connected to the dispute end of the differential amplifying circuit through the resistor R9 so as to compensate the distortion adjustment of a post-stage system, and the resistor R10 and the capacitor C1 are used for frequency compensation.
Preferably, the gain adjustment unit includes a voltage division network formed by serially connecting a resistor R12, a resistor R11 and a variable resistor VR3, and a triode differential amplifier is connected in parallel between the resistor R11 and the variable resistor VR 3.
By adopting the technical scheme, the signal output by the second-stage voltage amplification module passes through the voltage division network consisting of the resistor R11, the resistor R12 and the variable resistor VR3, the gain of the current stage can be set, the fine-tuning variable resistor VR3 meets the requirement of a later-stage circuit, and the adjustment of consistency during mass production is realized.
The utility model has the advantages that: the utility model discloses a piezoelectric nozzle actuating system that discrete component constitutes carries out power amplification through the pulse waveform that tertiary amplification module will have certain slope, and this system adds the zero point adjustment unit and compensaties the distortion timing of back level system, through gain control unit suppression common mode noise to and the timing of uniformity when solving the volume production, this system has uses nimble, with low costs and the strong characteristics of driving force.
Drawings
FIG. 1 is a block diagram of a discrete component based piezo jet drive system of the present invention;
fig. 2 is a circuit diagram of a third stage power amplification module of the present invention;
fig. 3 is a circuit diagram of the zero point adjusting unit of the present invention;
fig. 4 is a circuit diagram of the gain adjustment unit of the present invention.
Shown in the figure: 1-a first-stage voltage amplification module; 11-a zero point adjustment unit; 2-a second-stage voltage amplification module; 21-a gain adjustment unit; 3-a third stage power amplification module; 4-spray head.
Detailed Description
As shown in fig. 1-4, an embodiment of the present invention provides a piezoelectric nozzle driving system based on discrete components, including first-level voltage amplification module 1, second-level voltage amplification module 2 and third-level power amplification module 3, the input end of first-level voltage amplification module 1 is connected with a digital-to-analog converter, the output end of first-level voltage amplification module 1 is connected with the input end of second-level voltage amplification module 2, the output end of second-level voltage amplification module 2 is connected with the input end of third-level power amplification module 3, the output end of third-level power amplification module 3 is connected with nozzle 4, first-level voltage amplification module 1 is still connected with zero point adjustment unit 11, second-level voltage amplification module 2 is still connected with gain adjustment unit 21.
In an embodiment, the first-stage voltage amplifying module 1 and the second-stage voltage amplifying module 2 employ differential amplification.
In an embodiment, the third-stage power amplification module 3 is formed by connecting four triodes and five resistors in series and parallel.
In an embodiment, the zero point adjusting unit 11 includes a variable resistor VR2, a resistor R9, a resistor R10, and a capacitor C1, the resistor VR2 is connected to the resistor R9, one end of the resistor R10 is connected to the resistor R9, the other end of the resistor R10 is grounded, one end of the capacitor C1 is connected to the resistor R9, and the other end of the capacitor C1 is grounded.
In one embodiment, the gain adjustment unit 21 includes a voltage division network formed by serially connecting a resistor R12, a resistor R11, and a variable resistor VR3, and a triode differential amplifier is connected in parallel between the resistor R11 and the variable resistor VR 3.
The utility model discloses a theory of operation: referring to fig. 1 and 3, the mV-level analog waveform output by the digital-to-analog converter is sent to the first-stage voltage amplification module 1 of the system to complete voltage amplification, differential amplification is adopted in the stage, the output amplitude Vmax1 is controlled to reach 4V by matching with a feedback network under the condition of lower gain, a zero point adjustment unit 11 is added in the stage, the reference voltage VREF is divided by a variable resistor VR2 and then is connected to the positive terminal of the first-stage voltage amplification module 1 through a resistor R9 to compensate for distortion adjustment of the later-stage system, wherein the resistor R10 and the capacitor C1 are used for frequency compensation.
Referring to fig. 1 and 4, the output signal Vmax1 is subjected to second-stage voltage amplification, the current stage is differential amplification, the output signal Vmax1 is amplified to 35V and then Vmax2 is output, the second-stage voltage amplification module 2 is connected with the gain adjustment unit 21, the output end Vmax2 can set the current-stage gain through a voltage division network formed by the variable resistor VR3, the resistor R11 and the resistor R12, the VR3 is finely adjusted to meet the requirements of a rear-stage circuit, and the adjustment of consistency during mass production is solved.
Referring to fig. 1 and 2, an output Vmax2 is coupled to the third stage power amplification module 3 for power amplification, and the nozzle 4 is driven between the outputs for a print job, which is divided into two processes, charging and discharging.
When the nozzle 4 is charged, the current flows to VPP-triode Q14-nozzle 4-ground, wherein the triode Q9, the resistors R15, R16 and R14 are used for driving the triode Q14, and the triode Q13, the resistors R20 and R19 ensure the cut-off of the triode Q10 during the charging period;
when discharging to the spray head 4, the current flow direction is: the shower head 4-the transistor Q10-the ground, wherein the transistor Q13, the resistor R20 and the resistor R19 are used for driving the transistor Q10, and the transistor Q9, the resistor R15, the resistor R16 and the resistor R14 ensure the cut-off of the transistor Q14 during discharging.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. A piezo jet drive system based on discrete components, comprising: the device comprises a first-stage voltage amplification module, a second-stage voltage amplification module and a third-stage power amplification module, wherein the input end of the first-stage voltage amplification module is connected with a digital-to-analog converter, the output end of the first-stage voltage amplification module is connected with the input end of the second-stage voltage amplification module, the output end of the second-stage voltage amplification module is connected with the input end of the third-stage power amplification module, the output end of the third-stage power amplification module is connected with a spray head, the first-stage voltage amplification module is further connected with a zero point adjustment unit, and the second-stage voltage amplification module is further connected with a gain adjustment unit.
2. A discrete component-based piezojet actuation system as claimed in claim 1, wherein: the first-stage voltage amplification module and the second-stage voltage amplification module adopt differential amplification.
3. A discrete component-based piezojet actuation system as claimed in claim 1, wherein: and the third-stage power amplification module is formed by connecting four triodes and five resistors in series and parallel.
4. A discrete component-based piezojet actuation system as claimed in claim 1, wherein: the zero point adjusting unit comprises a variable resistor VR2, a resistor R9, a resistor R10 and a capacitor C1, the resistor VR2 is connected with the resistor R9, one end of the resistor R10 is connected with the resistor R9, the other end of the resistor R10 is grounded, one end of the capacitor C1 is connected with the resistor R9, and the other end of the capacitor C1 is grounded.
5. A discrete component-based piezojet actuation system as claimed in claim 1, wherein: the gain adjusting unit comprises a voltage division network formed by serially connecting a resistor R12, a resistor R11 and a variable resistor VR3, and a triode differential amplifier is connected in parallel at two ends of the resistor R11 and the variable resistor VR 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921807920.9U CN211000501U (en) | 2019-10-25 | 2019-10-25 | Piezoelectric nozzle driving system based on discrete component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921807920.9U CN211000501U (en) | 2019-10-25 | 2019-10-25 | Piezoelectric nozzle driving system based on discrete component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211000501U true CN211000501U (en) | 2020-07-14 |
Family
ID=71505696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921807920.9U Active CN211000501U (en) | 2019-10-25 | 2019-10-25 | Piezoelectric nozzle driving system based on discrete component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211000501U (en) |
-
2019
- 2019-10-25 CN CN201921807920.9U patent/CN211000501U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101257291B (en) | Trapezoid exciting pulse generating method and device | |
| US10206037B2 (en) | Amplifier speaker drive current sense | |
| US20080157830A1 (en) | Triangle oscillator and pulse width modulator | |
| CN101267188B (en) | Digital input class-d amplifier | |
| TW200952324A (en) | Class D amplifier | |
| JP2003115730A (en) | Pwm (pulse-width modulation) circuit and power amplifier circuit | |
| JPH05504448A (en) | High fidelity hearing aid amplifier | |
| JP6662380B2 (en) | Drive circuit of recording head and image recording apparatus | |
| WO2018136682A1 (en) | Offset calibration for amplifier and preceding circuit | |
| US7545212B2 (en) | Class ad audio amplifier | |
| CN211000501U (en) | Piezoelectric nozzle driving system based on discrete component | |
| CN102017401A (en) | Method and control circuit for controlling pulse width modulation | |
| CN110582935B (en) | Switching in an audio system having multiple playback paths | |
| CN117792300A (en) | Amplifier and oscilloscope | |
| JP7271393B2 (en) | Semiconductor integrated circuits, automotive electronic components, automotive electronic equipment | |
| CN106411281A (en) | Power-limiting amplifier | |
| JP4433709B2 (en) | Inkjet head drive circuit | |
| CN108777571B (en) | Signal generation circuit structure | |
| KR100848290B1 (en) | Amplifier with damping resistor in constant current load | |
| CN106549600A (en) | Drive circuit | |
| CN215576173U (en) | Flow velocity control circuit based on flow cytometer | |
| JPS59136266A (en) | Drive circuit for ink jet head | |
| JP3595398B2 (en) | Combined broadband amplifier | |
| CN109981074B (en) | Design method of fractional order micro-integral proportional amplifying circuit applied to piezoelectric nozzle | |
| JP3653939B2 (en) | Head drive device for recording apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Piezoelectric Printhead Drive System Based on Discrete Components Effective date of registration: 20220905 Granted publication date: 20200714 Pledgee: Bank of China Limited Dongshan Branch of Guangzhou Pledgor: Guangzhou Senyang Electronic Technology Co.,Ltd. Registration number: Y2022980014504 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |