CN207994624U - A kind of Digital Inkjet printers nozzle power control unit - Google Patents
A kind of Digital Inkjet printers nozzle power control unit Download PDFInfo
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- CN207994624U CN207994624U CN201721671776.1U CN201721671776U CN207994624U CN 207994624 U CN207994624 U CN 207994624U CN 201721671776 U CN201721671776 U CN 201721671776U CN 207994624 U CN207994624 U CN 207994624U
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- detection circuit
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Abstract
The utility model discloses a kind of Digital Inkjet printers nozzle power control units, including：Processor, power control circuit; power sense circuit; protect circuit; warning circuit, wherein the processor connects the power control circuit; power sense circuit; the processor detects nozzle power supply by the power sense circuit, and sends out control signal to the power control circuit according to the result of detection, and the power control circuit controls whether powering on of nozzle power supply accordingly.
Description
Technical field
The utility model belongs to a kind of Digital Inkjet printers nozzle power control unit.
Background technology
As digital ink-jet technology continues to develop, user is higher and higher to the reliability requirement of digital ink-jet system.For
For digital ink-jet printing device manufacturer, nozzle used in digital ink-jet tends to take up more equipment cost, if nozzle
The frequency of damage is higher, not only influences terminal user and manufactures, also increases the maintenance after cost of manufacturer.
Traditional protection and drive scheme can play a role under certain occasion, but continuous with device fabrication producer
It weeds out the old and bring forth the new, the continuous renewal of nozzle is regenerated, and traditional protection and drive scheme can no longer meet the high reliability request of user,
Various emergency cases can not be predicted in use, and this requires nozzle control systems to have good testing mechanism
And safeguard measure, the loss of user can be reduced to minimum, while the original occurred extremely should be able to be accurately positioned in control system
Cause, carrying out analysis investigation problem in this way convenient for technical staff can be to device fabrication producer and use while itself is extracted experience from
Family proposes preferably to suggest.
Nozzle protected mode is mostly fast molten insurance at present, and self-recovery fuse, the traditional approach such as TVS pipe are protected, greatly
Nozzle can not be protected within the effective time under partial picture, and nozzle different voltages power on/off sequential shortage correctly
Effectively control is to cause nozzle aging fast, and service life is short, the series of problems such as printing effect difference.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of Digital Inkjet printers nozzle power control unit,
It is of the existing technology for overcoming the problems, such as.
It is as follows that the utility model solves the technical solution that above-mentioned technical problem is taken：
A kind of Digital Inkjet printers nozzle power control unit, including：Processor, power control circuit, power detecting
Circuit protects circuit, warning circuit, wherein the processor connects the power control circuit, and power sense circuit is described
Processor detects nozzle power supply by the power sense circuit, and sends out control signal to the power supply according to the result of detection
Control circuit, the power control circuit control whether powering on of nozzle power supply accordingly.
The technical program can perfectly solve the above problems, and most reliable control detection scheme is provided for client.
The purpose of the technical program can be gone out on nozzle with intellectualized detection while realizing holding traditional protection mode
Power conditions in electric process and during normal use will be closed when there are abnormal conditions according to correct power-off flow
Power-off source, and will not carry out powering on action in the case that abnormal conditions are undissolved, to avoid causing secondary damage to nozzle,
And then it is effectively protected nozzle.
Other features and advantages of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages can pass through
Specifically noted structure is realized and is obtained in the specification, claims and attached drawing write.
Description of the drawings
The utility model is described in detail below in conjunction with the accompanying drawings, so that the above-mentioned advantage of the utility model is more
It is clear.Wherein,
Fig. 1 is that the flow of the switching on and shutting down guard method of the utility model Digital Inkjet printers nozzle power control unit is shown
It is intended to；
Fig. 2 is the block diagram of the utility model Digital Inkjet printers nozzle power control unit；
Fig. 3 is the schematic diagram of over-voltage detection circuit in the utility model；
Fig. 4 is the schematic diagram of undervoltage detection circuit in the utility model；
Fig. 5 is the schematic diagram of 3.3V_Print detection circuits in the utility model；
Fig. 6 is the schematic diagram of nozzle 42V high-voltage control circuits in the utility model；
Fig. 7 is the schematic diagram of nozzle 42V high-voltage control circuits in the utility model；
Fig. 8 is the schematic diagram of nozzle 42V high-voltage detecting circuits in the utility model；
Fig. 9 is the schematic diagram of nozzle waveform drive voltage detection circuit in the utility model.
Specific implementation mode
The embodiment of the utility model is described in detail below with reference to accompanying drawings and embodiments, whereby to the utility model
How applied technology method solves technical problem, and the realization process for reaching technique effect can fully understand and implement.
If it should be noted that do not constitute conflict, each feature in each embodiment and each embodiment in the utility model
It can be combined with each other, be formed by technical solution and both be within the protection scope of the present invention.
In addition, step shown in the flowchart of the accompanying drawings can be in the department of computer science of such as a group of computer-executable instructions
It is executed in system, although also, logical order is shown in flow charts, and it in some cases, can be to be different from herein
Sequence execute shown or described step.
Fig. 1 flow charts
1. after electric power starting, if power positive cathode reversal connection, power supply will be unable to supply board because protection circuit exists
Electricity, to which nozzle can not also power on, TVS pipe can effectively prevent surge to damage other devices, when voltage is higher than TVS pipe for a long time
When protecting voltage, TVS pipe will puncture, fuse intervention protection.
2. after if power supply is normally-open, there are short-circuit conditions, fuses to protect intervention for board own power source, to board
It is unable to normal power supply.
3. board power supply is under normal circumstances, will carry out nozzle power supply needed for supply voltage it is whether normal, under normal circumstances by
Grade opens nozzle low pressure, high pressure, and waveform drive voltage will cut off the power and discharge step by step when detecting that it is abnormal that any one exists,
Board is alarmed, and can be positioned to abnormal problem point according to police instruction.
4. after all power detectings are normal when powering on, printing can be proceeded by, nozzle will be all detected in real time at any period
Whether power conditions are good, and nozzle power supply will be cut off step by step at the first time by exception occur.
5. when user voluntarily disconnects board power supply, also the power-off sequential pursued a policy is acted, is ensured to the greatest extent
The safety of nozzle improves nozzle service life.
Nozzle protected mode is mostly fast molten insurance at present, and self-recovery fuse, the traditional approach such as TVS pipe are protected, greatly
Nozzle can not be protected within the effective time under partial picture, and nozzle different voltages power on/off sequential shortage correctly
Effectively control is to cause nozzle aging fast, and service life is short, the series of problems such as printing effect difference.The purpose of the technical program is
While realizing holding traditional protection mode, it can be gone out with intellectualized detection in nozzle power up and during normal use
Power conditions will be and undissolved in abnormal conditions according to correct power-off flow power cutoff when there are abnormal conditions
In the case of will not carry out powering on action, to avoid causing secondary damage to nozzle, and then be effectively protected nozzle.
The technical program purpose is to provide a kind of intellectualized detection nozzle power supply, and power process on the control nozzle of science
Method.This method is suitable for all digital ink-jet print system types, and reliability and real-time are high.The technical solution by
FPGA or MCU, power control circuit, power sense circuit protect circuit, the part of warning circuit five to form, power supply control and
Detection is realized by FPGA or MCU, as FPGA or MCU not actuated, is protected by protection circuit, power supply can not be normal
It opens, control is detected according to the sequential of regulation after FPGA or MCU starts, such as one of which nozzle controls detection method
Overall structure is as shown in Fig. 2 block diagrams.
Fig. 2 block diagrams
One, operation principles
1.42V input detecting circuit
Fig. 3 overvoltages detect
U26 is track to track operational amplifier, is used here as comparator, when VH is less than 45V, 3 voltage of U26 pins
Less than 2.5V, 2 voltage of pin is 2.5V, and U26 pins 1 export low level；When VH is higher than 45V, 3 level of pin is higher than pin 2
Voltage, U26 pins 1 export high level, are judged as that supply voltage is excessively high when FPGA or MCU detects high level, not open
Nozzle drives.
The principle is similar with over-pressed detection, and when VHIN is less than 36V, 2 voltage of U92 pins is less than 3 voltage of pin, and pin 1 is defeated
Go out high level；When VHIN is higher than 36V, pin 1 exports low level, judges when FPGA or MCU detects that this pin is high level
For under-voltage or power-off.
2.3.3V_Print detection
If it is normal to meet 3.3V_PRINT after nozzle, then voltage is 2V at U9 pins 5, voltage is 1.5V, pin at pin 6
5 voltages are higher than 6 voltage of pin, and pin 7 exports high level, if 3.3V_PRINT is short-circuit, then voltage is 0V, pin 5 at pin 5
Voltage is less than 6 voltage of pin, and pin 7 exports low level, is judged as when FPGA or MCU detects that this pin is low level different
Often.
3. nozzle 42V high voltage controls
When FPGA detects 42V power supplys without over-and under-voltage, 3.3V_Print is normal, and FPGA_VH pins are to high level, U8
With door chip, when 1 pin 2 of pin is high level simultaneously, pin 4 exports high level, Q2 conductings, and Vgs pressure differences are -14V, metal-oxide-semiconductor
Q1 is connected, to which nozzle 42V high drives power on.
4. nozzle 42V high pressures detect
Principle is similar with over-pressed detection, and when VH_S1 is less than 36V, 2 voltage of U14 pins is less than 3 voltage of pin, and pin 1 exports
High level；When VHIN is higher than 36V, pin 1 exports low level, is judged as when FPGA or MCU detects that this pin is high level
Nozzle abnormity of power supply.
5. nozzle waveform drive voltage detects
Principle is similar with over-pressed detection, and when COMA_1 is less than 10V, 5 voltage of U14 pins is less than 3 voltage of pin, and pin 1 is defeated
Go out high level；When VHIN is higher than 10V, pin 1 exports low level, judges when FPGA or MCU detects that this pin is high level
For nozzle abnormity of power supply.
(2) technique effect
The advantages of the utility model (utility model) exists compared with prior art, generated effect are provided, is needed herein
It wants combination technology scheme to describe, is illustrated with inference mode, accomplish reasonable, never only draw a conclusion, and without analysis.
Traditional protection and drive scheme can play a role under certain occasion, but continuous with device fabrication producer
It weeds out the old and bring forth the new, the continuous renewal of nozzle is regenerated, and traditional protection and drive scheme can no longer meet the high reliability request of user,
Various emergency cases can not be predicted in use, and this requires nozzle control systems to have good testing mechanism
And safeguard measure, the loss of user can be reduced to minimum, while the original occurred extremely should be able to be accurately positioned in control system
Cause, carrying out analysis investigation problem in this way convenient for technical staff can be to device fabrication producer and use while itself is extracted experience from
Family proposes preferably to suggest.The technical program can perfectly solve the above problems, and most reliable control detection is provided for client
Scheme.
This technical solution can be by changing FPGA or MCU chip model, and adjustment power supply controls detection circuit device model
As an alternative, such as fpga chip is changed to Xilinx chips by Altera, and amplifier chip MCP6002 is changed to other models
Comparator, 42 control metal-oxide-semiconductors are changed to relay or other model metal-oxide-semiconductors.
The technical program key innovations：
1, it in conjunction with traditional protection mode, increases and detects step by step, real-time testing mechanism is normal in all supply voltages of nozzle
In the case of, printing can be normally carried out.
2, the technical program has fully considered nozzle internal control principle, has carried out each power supply startup sequence when nozzle powers on
And each power cut-off sequence when power-off, and adding discharge mechanism, it is ensured that power supply sequential is accurate.
3, the technical program realizes the intelligent processing of hardware failure detection mechanism, and accurate judgement simultaneously positions abnormal generation
Position, search defect convenient for developer, at the same also can be improper to other unexpected abnormalities or user's operation etc. factors carry out
Judgement, convenient for proposing reasonable proposal.
It should be noted that for above method embodiment, for simple description, therefore it is all expressed as a series of
Combination of actions, but those skilled in the art should understand that, the application is not limited by the described action sequence because
According to the application, certain steps can be performed in other orders or simultaneously.Secondly, those skilled in the art should also know
It knows, embodiment described in this description belongs to preferred embodiment, involved action and module not necessarily the application
It is necessary.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.
Finally it should be noted that：The above descriptions are merely preferred embodiments of the present invention, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it still can be with technical scheme described in the above embodiments is modified, or to which part technical characteristic
Carry out equivalent replacement.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of Digital Inkjet printers nozzle power control unit, which is characterized in that including：The processing being connected with general supply
Device, 42V input detecting circuits, 42V controls and detection circuit, 3.3V controls and detection circuit, drive waveform control and detection electricity
Road, wherein the processor connects the above 42V input detecting circuits, 42V controls and detection circuit, 3.3V controls and detection electricity
Road, drive waveform control and detection circuit, and 42V controls and detection circuit, 3.3V controls and detection circuit, drive waveform control
And detection circuit is connected on spray-head interface, in addition, being provided with the 42V inputs detection electricity between processor and general supply
Road is provided with waveform driver circuit again between drive waveform control and detection circuit and general supply；Wherein, the processing
Device is controlled by 3.3V and detection circuit, 42V controls and detection circuit, drive waveform control and detection circuit open nozzle step by step
Low pressure, high pressure, waveform drive voltage will cut off the power and discharge step by step, while control one when detecting that it is abnormal that any one exists
Warning circuit is alarmed by way of board alarm, and user positions abnormal problem point according to police instruction.
2. Digital Inkjet printers nozzle power control unit according to claim 1, which is characterized in that the processor
Select FPGA processor or MCU processor.
3. Digital Inkjet printers nozzle power control unit according to claim 1 or 2, which is characterized in that also set up
There is over-voltage detection circuit, wherein the over-voltage detection circuit includes：Track to track operational amplifier (U26), when VH is less than 45V,
3 voltage of U26 pins is less than 2.5V, and 2 voltage of pin is 2.5V, and U26 pins 1 export low level；When VH is higher than 45V, 3 electricity of pin
Flat to be higher than 2 voltage of pin, U26 pins 1 export high level, are judged as supply voltage mistake when FPGA or MCU detects high level
Height not opens nozzle driving.
4. Digital Inkjet printers nozzle power control unit according to claim 1 or 2, which is characterized in that also set up
There is undervoltage detection circuit, wherein when VHIN is less than 36V, 2 voltage of U92 pins is less than 3 voltage of pin, and pin 1 exports high electricity
It is flat；When VHIN is higher than 36V, pin 1 exports low level, is judged as when FPGA or MCU detects that this pin is high level under-voltage
Or power-off.
5. Digital Inkjet printers nozzle power control unit according to claim 1 or 2, which is characterized in that described
3.3V is controlled and detection circuit, wherein if it is normal to meet 3.3V_PRINT after nozzle, then voltage is 2V, pin 6 at U9 pins 5
Place's voltage is 1.5V, and 5 voltage of pin is higher than 6 voltage of pin, and pin 7 exports high level, if 3.3V_PRINT is short-circuit, then pin
Voltage is 0V at 5, and 5 voltage of pin is less than 6 voltage of pin, and pin 7 exports low level, when FPGA or MCU detects that this pin is
It is judged as exception when low level.
6. Digital Inkjet printers nozzle power control unit according to claim 1, which is characterized in that the 42V is defeated
Enter detection circuit, including：Nozzle 42V high-tension circuits, wherein when FPGA detects 42V power supplys without over-and under-voltage, 3.3V_Print
Normally, FPGA_VH pins are to high level, and U8 and door chip, when 1 pin 2 of pin is high level simultaneously, pin 4 exports high electricity
Flat, Q2 conductings, Vgs pressure differences are -14V, metal-oxide-semiconductor Q1 conductings, to which nozzle 42V high drives power on.
7. Digital Inkjet printers nozzle power control unit according to claim 1, which is characterized in that further include：42V
Control and detection circuit, wherein when VH_S1 is less than 36V, 2 voltage of U14 pins is less than 3 voltage of pin, and pin 1 exports high level；
When VHIN is higher than 36V, pin 1 exports low level, is judged as nozzle electricity when FPGA or MCU detects that this pin is high level
Source is abnormal.
8. Digital Inkjet printers nozzle power control unit according to claim 1 or 2, which is characterized in that the wave
Shape drive control and detection circuit, wherein when COMA_1 is less than 10V, 5 voltage of U14 pins is less than 3 voltage of pin, and pin 1 is defeated
Go out high level；When VHIN is higher than 10V, pin 1 exports low level, judges when FPGA or MCU detects that this pin is high level
For nozzle abnormity of power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721671776.1U CN207994624U (en) | 2017-12-05 | 2017-12-05 | A kind of Digital Inkjet printers nozzle power control unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721671776.1U CN207994624U (en) | 2017-12-05 | 2017-12-05 | A kind of Digital Inkjet printers nozzle power control unit |
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| Publication Number | Publication Date |
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| CN207994624U true CN207994624U (en) | 2018-10-19 |
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|---|---|---|---|
| CN201721671776.1U Active CN207994624U (en) | 2017-12-05 | 2017-12-05 | A kind of Digital Inkjet printers nozzle power control unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018202713A (en) * | 2017-06-02 | 2018-12-27 | セイコーエプソン株式会社 | Large-format printer |
| CN113866685A (en) * | 2020-06-30 | 2021-12-31 | 深圳市汉森软件有限公司 | Device, method, equipment and medium for electrifying detection of nozzle control plate |
-
2017
- 2017-12-05 CN CN201721671776.1U patent/CN207994624U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018202713A (en) * | 2017-06-02 | 2018-12-27 | セイコーエプソン株式会社 | Large-format printer |
| CN113866685A (en) * | 2020-06-30 | 2021-12-31 | 深圳市汉森软件有限公司 | Device, method, equipment and medium for electrifying detection of nozzle control plate |
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