CN116582969B - Light source driving method and system for LCD photo-curing 3D printer - Google Patents

Light source driving method and system for LCD photo-curing 3D printer Download PDF

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CN116582969B
CN116582969B CN202310848543.8A CN202310848543A CN116582969B CN 116582969 B CN116582969 B CN 116582969B CN 202310848543 A CN202310848543 A CN 202310848543A CN 116582969 B CN116582969 B CN 116582969B
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light source
user
source driving
curing
parameters
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CN116582969A (en
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王九亮
曾维棋
曾梅焕
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Shenzhen Intelligent Technology Co ltd
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Shenzhen Intelligent Technology Co ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/264—Arrangements for irradiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)

Abstract

The application discloses a light source driving method of an LCD light curing 3D printer, wherein after verification is passed, the LCD light curing 3D printer judges the range of light source driving parameters corresponding to the power management authority corresponding to a user; when the light source driving parameters requested to be modified by the user exceed the parameter range mapped by the power management authority corresponding to the user, the user is prohibited from immediately modifying the light source driving parameters, after the user is prohibited from immediately modifying the light source driving parameters, the user is permitted to input the parameters of the optical printing materials in a preset time period, if the input parameter information of the adopted optical printing materials is judged whether the light source driving parameters need to be changed, if the light source driving parameters need to be changed, the light source driving parameters need to be modified according to the needs of the printing materials or the light source driving parameters which need to be modified according to the user. The application realizes that different users have different parameter modification authorities so as to prevent partial users from adopting a high-power light source to carry out solidification.

Description

Light source driving method and system for LCD photo-curing 3D printer
Technical Field
The application relates to the technical field of 3D printing, in particular to a light source driving method and system of an LCD photo-curing 3D printer.
Background
The photo-curing forming technology is one of the earliest 3D printing forming technologies and is also a 3D printing technology which is mature at present. The basic principle of the technology is that the shape of a three-dimensional target part is divided into a plurality of plane layers by using accumulation molding of materials, and a light beam with a certain wavelength is used for scanning liquid photosensitive resin, so that the scanned part of each layer of liquid photosensitive resin is solidified and molded, the part which is not irradiated by the light beam is still in a liquid state, and finally all layers are accumulated to form the required target part. The photo-curing 3D printer has high printing precision, and can reach the micron level, so the development trend is good. Currently, the more common photo-curing 3D printers mainly include SLA photo-curing 3D printers, DLP photo-curing 3D printers, LCD photo-curing 3D printers, and the like. The LCD photo-curing 3D printer is the latest photo-curing 3D printer at present, and the imaging principle of an LCD liquid crystal panel of the printer is as follows: different patterns are displayed by controlling the LCD screen and then penetrated by a light source with a specific wavelength of light, for example, 405nm uv light, is passed through the LCD screen to cure the liquid photosensitive resin. The LCD liquid crystal screen is used as a mask light transmission screen of the LCD photo-curing 3D printer, and the higher the resolution is, the smoother and finer the surface of the photo-curing molded model is.
In an LCD photo-curing 3D printer, an object to be printed is sliced into pictures layer by a computer, the pictures are displayed layer by utilizing LCD imaging of a liquid crystal screen, and then resin curing is carried out on the pictures layer by ultraviolet light, so that the cured resin sheets of each layer can be overlapped into a solid, the requirements on the brightness parameters of each layer are very high in the photo-curing process of each layer, the parameters directly influence the thickness and the size of each layer of resin curing, and the brightness control of a light source directly influences the printing precision of the machine.
The type of light source used in a general LCD photo-curing 3D printer is an LED lamp bead, and the larger the current flowing through the LED in the current limit parameter range, the higher the luminous brightness of the LED, namely the brightness of the LED is in direct proportion to the current passing through the LED due to the photoelectric characteristic of the LED.
For example, CN109732911a discloses a light source driving circuit of an LCD photo-curing 3D printer, which comprises a processor, a driving circuit and a feedback circuit, wherein the feedback circuit is connected with the processor through a Vout pin, and the processor is connected with the driving circuit through a port capable of outputting an adjustable voltage value. According to the application, the actual feedback value detected by the feedback circuit is compared with the current value set in the processor, the processor outputs a proper voltage value to enter the driving circuit, and the driving circuit outputs a correspondingly changed voltage value to realize accurate adjustment of the brightness of the LED lamp beads, so that the effect of printing precision of the printer is achieved.
However, it is not necessary for the user to fully understand how the driving scheme of the light source is set, and the brightness of the light source can be adjusted only by adjusting the current value of the light source driving circuit, but too high light source intensity can accelerate the light curing speed, but can greatly reduce the service life of the light source, and some users (for example, for the cluster 3D printing device) are not concerned about how to limit the user to perform the light source driving adjustment of the 3D printing device.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application discloses a light source driving method of an LCD photo-curing 3D printer, which comprises the following steps:
step 1, when a user needs to change the light source driving parameters of the LCD photo-curing 3D printer, firstly, the identity information of the user needs to be verified, the LCD photo-curing 3D printer stores the identity information of the user in advance and distributes corresponding power management authorities for the identity information respectively, and after verification, the LCD photo-curing 3D printer judges the range of the light source driving parameters corresponding to the power management authorities corresponding to the user;
step 2, when the user requests to modify the light source driving parameters and exceeds the parameter range mapped by the power management authority corresponding to the user, the user is prohibited from immediately modifying the light source driving parameters, and the step 3 is entered; if the light source driving parameters which are requested to be modified are within the corresponding power management authorities, driving the light source according to the parameters which are requested to be modified by a user, receiving 3D model data to be printed and sent by the user after the light source detection, executing current printing, and modifying the light source driving parameters to default initial values after the current printing is finished;
step 3, after the user is prohibited from immediately modifying the light source driving parameters, allowing the user to input the parameters of the optical printing material in a preset time period, and if the user does not input corresponding data in the preset time period, finally prohibiting the user from executing the change of the light source parameters; if the user inputs corresponding data in a preset time period, if judging whether the input parameter information of the adopted optical printing material needs to change the light source driving parameters, if judging that the light source driving parameters need to be changed, the light source driving parameters are modified according to the needs of the printing material or the light source driving parameters requested to be modified by the user, wherein the parameters of the optical printing material comprise the material number and the lowest light intensity of light curing and the best light intensity of light curing corresponding to the material number.
Further, the light source type of the LCD photo-curing 3D printer is LED beads, the light source driving parameters include driving current values for the LED beads, and the default initial values of the driving parameters of the light source are set to be a low-power light source driving which can only enable part of the printing material to be cured.
Further, after adjusting the driving parameters of the light source, the light source driving circuit performs detection driving on the adjusted driving parameters, calculates the target light source brightness of the light source according to the input light source driving parameters, sets a plurality of detection points to detect the actual light source brightness through the set brightness detection module, calculates whether the ratio of the average brightness value of the plurality of monitoring points to the target light source brightness is larger than a preset threshold, if so, judges that the current driving parameter adjustment is effective, and executes a 3D printing task, if the ratio is smaller than the preset threshold, judges that the current driving parameter adjustment is ineffective, and feeds back to a user that the 3D printing task cannot be performed, and reminds the user to adjust the new light source driving parameters.
Further, when the user requests to modify the light source driving parameter beyond the parameter range mapped by the power management authority corresponding to the user, prohibiting the user from immediately modifying the light source driving parameter further includes: and recording the number of times n of attempting to modify the parameter beyond the range by the user, and simultaneously recording the number of times m of finally prohibiting modification, judging whether the number of times m of finally prohibiting modification is smaller than a second preset value after the number of times n reaches the first preset value, and expanding the power management authority corresponding to the user to enlarge the range of modifiable light source driving parameters when the number of times m is smaller than the second preset value.
Further, if it is determined that the input parameter information of the optical printing material needs to change the light source driving parameter, if it is determined that the light source driving parameter needs to be changed, modifying the light source driving parameter according to the need of the printing material or modifying the light source driving parameter according to the request of the user further includes: the LCD photo-curing 3D printer inquires the material number input by the user in the material database, judges whether the light intensity corresponding to the lowest photo-curing and the light intensity of the optimal photo-curing input by the user are matched with those in the material database, if so, judges whether the light intensity corresponding to the optimal photo-curing exceeds the parameter range mapped by the power management authority corresponding to the user, and if so, judges that the light source driving parameters need to be changed.
The application also discloses a light source driving system of the LCD photo-curing 3D printer, which comprises the following modules: the identity verification module is used for verifying the identity information of a user when the user needs to change the light source driving parameters of the LCD light-cured 3D printer, the LCD light-cured 3D printer stores the identity information of the user in advance and distributes corresponding power management authorities for the identity information respectively, and after the identity information passes the verification, the LCD light-cured 3D printer judges the range of the light source driving parameters corresponding to the power management authorities corresponding to the user; the parameter modification first module prohibits the user from immediately modifying the light source driving parameters and entering the parameter modification second module when the light source driving parameters requested to be modified by the user exceed the parameter range mapped by the power management authority corresponding to the user; if the light source driving parameters which are requested to be modified are within the corresponding power management authorities, driving the light source according to the parameters which are requested to be modified by a user, receiving 3D model data to be printed and sent by the user after the light source detection, executing current printing, and modifying the light source driving parameters to default initial values after the current printing is finished; the parameter modification second module is used for allowing the user to input the parameters of the optical printing material in a preset time period after the user is forbidden to immediately modify the light source driving parameters, and finally forbidding the user to execute the change of the light source parameters if the user does not input corresponding data in the preset time period; if the user inputs corresponding data in a preset time period, if judging whether the input parameter information of the adopted optical printing material needs to change the light source driving parameters, if judging that the light source driving parameters need to be changed, the light source driving parameters are modified according to the needs of the printing material or the light source driving parameters requested to be modified by the user, wherein the parameters of the optical printing material comprise the material number and the lowest light intensity of light curing and the best light intensity of light curing corresponding to the material number. Further, the light source type of the LCD photo-curing 3D printer is LED beads, the light source driving parameters include driving current values for the LED beads, and the default initial values of the driving parameters of the light source are set to be a low-power light source driving which can only enable part of the printing material to be cured.
Further, after adjusting the driving parameters of the light source, the light source driving circuit performs detection driving on the adjusted driving parameters, calculates the target light source brightness of the light source according to the input light source driving parameters, sets a plurality of detection points to detect the actual light source brightness through the set brightness detection module, calculates whether the ratio of the average brightness value of the plurality of monitoring points to the target light source brightness is larger than a preset threshold, if so, judges that the current driving parameter adjustment is effective, and executes a 3D printing task, if the ratio is smaller than the preset threshold, judges that the current driving parameter adjustment is ineffective, and feeds back to a user that the 3D printing task cannot be performed, and reminds the user to adjust the new light source driving parameters.
Further, when the user requests to modify the light source driving parameter beyond the parameter range mapped by the power management authority corresponding to the user, prohibiting the user from immediately modifying the light source driving parameter further includes: and recording the number of times n of attempting to modify the parameter beyond the range by the user, and simultaneously recording the number of times m of finally prohibiting modification, judging whether the number of times m of finally prohibiting modification is smaller than a second preset value after the number of times n reaches the first preset value, and expanding the power management authority corresponding to the user to enlarge the range of modifiable light source driving parameters when the number of times m is smaller than the second preset value.
Further, if it is determined that the input parameter information of the optical printing material needs to change the light source driving parameter, if it is determined that the light source driving parameter needs to be changed, modifying the light source driving parameter according to the need of the printing material or modifying the light source driving parameter according to the request of the user further includes: the LCD photo-curing 3D printer inquires the material number input by the user in the material database, judges whether the light intensity corresponding to the lowest photo-curing and the light intensity of the optimal photo-curing input by the user are matched with those in the material database, if so, judges whether the light intensity corresponding to the optimal photo-curing exceeds the parameter range mapped by the power management authority corresponding to the user, and if so, judges that the light source driving parameters need to be changed.
Compared with the prior art, the application has the beneficial effects that: setting a lower initial light source power to reduce power consumption, changing the intensity of the light source by modifying the current value, wherein different users have different parameter modification authorities to prevent partial users from adopting a high-power light source to solidify, simultaneously, for the real requirement of materials, the users which have to modify the light source parameters can carry out secondary verification to ensure that the users do not cause extra waste and damage, finally, the application further provides a method for modifying the user authorities, namely recording the number n of times of attempting to modify the parameters by the users and simultaneously recording the number m of times of finally prohibiting modification, judging whether the number m of times of finally prohibiting modification is smaller than a second preset value after the number n reaches the first preset value, and expanding the corresponding power management authority of the users to enlarge the range of modifiable light source driving parameters when the number m is smaller than the second preset value so as to ensure the convenience of normal users.
Drawings
The application will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. In the figures, like reference numerals designate corresponding parts throughout the different views.
Fig. 1 is a flowchart of a method for driving a light source of an LCD photo-curing 3D printer according to the present application.
Detailed Description
The technical scheme of the application will be described in more detail below with reference to the accompanying drawings and examples.
A mobile terminal implementing various embodiments of the present application will now be described with reference to the accompanying drawings. In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present application, and are not of specific significance per se. Thus, "module" and "component" may be used in combination.
Mobile terminals may be implemented in a variety of forms. For example, the terminals described in the present application may include mobile terminals such as mobile phones, smart phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), navigation devices, and the like, and fixed terminals such as digital TVs, desktop computers, and the like. In the following, it is assumed that the terminal is a mobile terminal. However, it will be understood by those skilled in the art that the configuration according to the embodiment of the present application can be applied to a fixed type terminal in addition to elements particularly used for a moving purpose.
A light source driving method of an LCD photo-curing 3D printer as shown in fig. 1, the light source driving method comprising the steps of:
step 1, when a user needs to change the light source driving parameters of the LCD photo-curing 3D printer, firstly, the identity information of the user needs to be verified, the LCD photo-curing 3D printer stores the identity information of the user in advance and distributes corresponding power management authorities for the identity information respectively, and after verification, the LCD photo-curing 3D printer judges the range of the light source driving parameters corresponding to the power management authorities corresponding to the user;
step 2, when the user requests to modify the light source driving parameters and exceeds the parameter range mapped by the power management authority corresponding to the user, the user is prohibited from immediately modifying the light source driving parameters, and the step 3 is entered; if the light source driving parameters which are requested to be modified are within the corresponding power management authorities, driving the light source according to the parameters which are requested to be modified by a user, receiving 3D model data to be printed and sent by the user after the light source detection, executing current printing, and modifying the light source driving parameters to default initial values after the current printing is finished;
step 3, after the user is prohibited from immediately modifying the light source driving parameters, allowing the user to input the parameters of the optical printing material in a preset time period, and if the user does not input corresponding data in the preset time period, finally prohibiting the user from executing the change of the light source parameters; if the user inputs corresponding data in a preset time period, if judging whether the input parameter information of the adopted optical printing material needs to change the light source driving parameters, if judging that the light source driving parameters need to be changed, the light source driving parameters are modified according to the needs of the printing material or the light source driving parameters requested to be modified by the user, wherein the parameters of the optical printing material comprise the material number and the lowest light intensity of light curing and the best light intensity of light curing corresponding to the material number.
In this embodiment, the light source type of the LCD photo-curing 3D printer is LED lamp beads, the light source driving parameters include driving current values for the LED lamp beads, and the default initial values of the driving parameters of the light source are set to be a low-power light source driving only capable of curing part of the printing material.
Further, after adjusting the driving parameters of the light source, the light source driving circuit performs detection driving on the adjusted driving parameters, calculates the target light source brightness of the light source according to the input light source driving parameters, sets a plurality of detection points to detect the actual light source brightness through the set brightness detection module, calculates whether the ratio of the average brightness value of the plurality of monitoring points to the target light source brightness is larger than a preset threshold, if so, judges that the current driving parameter adjustment is effective, and executes a 3D printing task, if the ratio is smaller than the preset threshold, judges that the current driving parameter adjustment is ineffective, and feeds back to a user that the 3D printing task cannot be performed, and reminds the user to adjust the new light source driving parameters.
In this embodiment, the modified brightness of the light source may be proved to be available by a post-verification method in this embodiment, where a plurality of points may be selected on the detection plane as brightness test points.
The average brightness is generally the average brightness of 5 points, 9 points or 13 points, and the specific distribution of the test points accords with the normal distribution. 5. Point average luminance= (y1+y2+y3+y4+y5)/5;
if the central point brightness, the 5-point average brightness and the 9-point average brightness of the test module are the same as the central point brightness after the light source driving parameters are changed, and the average brightness of the 5-point and the 9-point is not lower than 95% of the target brightness, judging that the current light source parameter modification accords with the expectation.
Further, when the user requests to modify the light source driving parameter beyond the parameter range mapped by the power management authority corresponding to the user, prohibiting the user from immediately modifying the light source driving parameter further includes: and recording the number of times n of attempting to modify the parameter beyond the range by the user, and simultaneously recording the number of times m of finally prohibiting modification, judging whether the number of times m of finally prohibiting modification is smaller than a second preset value after the number of times n reaches the first preset value, and expanding the power management authority corresponding to the user to enlarge the range of modifiable light source driving parameters when the number of times m is smaller than the second preset value.
Further, if it is determined that the input parameter information of the optical printing material needs to change the light source driving parameter, if it is determined that the light source driving parameter needs to be changed, modifying the light source driving parameter according to the need of the printing material or modifying the light source driving parameter according to the request of the user further includes: the LCD photo-curing 3D printer inquires the material number input by the user in the material database, judges whether the light intensity corresponding to the lowest photo-curing and the light intensity of the optimal photo-curing input by the user are matched with those in the material database, if so, judges whether the light intensity corresponding to the optimal photo-curing exceeds the parameter range mapped by the power management authority corresponding to the user, and if so, judges that the light source driving parameters need to be changed.
From the perspective of hardware description, the embodiment also provides a light source driving system of an LCD photo-curing 3D printer, the light source driving system comprising the following modules: the identity verification module is used for verifying the identity information of a user when the user needs to change the light source driving parameters of the LCD light-cured 3D printer, the LCD light-cured 3D printer stores the identity information of the user in advance and distributes corresponding power management authorities for the identity information respectively, and after the identity information passes the verification, the LCD light-cured 3D printer judges the range of the light source driving parameters corresponding to the power management authorities corresponding to the user; the parameter modification first module prohibits the user from immediately modifying the light source driving parameters and entering the parameter modification second module when the light source driving parameters requested to be modified by the user exceed the parameter range mapped by the power management authority corresponding to the user; if the light source driving parameters which are requested to be modified are within the corresponding power management authorities, driving the light source according to the parameters which are requested to be modified by a user, receiving 3D model data to be printed and sent by the user after the light source detection, executing current printing, and modifying the light source driving parameters to default initial values after the current printing is finished; the parameter modification second module is used for allowing the user to input the parameters of the optical printing material in a preset time period after the user is forbidden to immediately modify the light source driving parameters, and finally forbidding the user to execute the change of the light source parameters if the user does not input corresponding data in the preset time period; if the user inputs corresponding data in a preset time period, if judging whether the input parameter information of the adopted optical printing material needs to change the light source driving parameters, if judging that the light source driving parameters need to be changed, the light source driving parameters are modified according to the needs of the printing material or the light source driving parameters requested to be modified by the user, wherein the parameters of the optical printing material comprise the material number and the lowest light intensity of light curing and the best light intensity of light curing corresponding to the material number. Further, the light source type of the LCD photo-curing 3D printer is LED beads, the light source driving parameters include driving current values for the LED beads, and the default initial values of the driving parameters of the light source are set to be a low-power light source driving which can only enable part of the printing material to be cured.
The 3D printing device may be a general control manner of LCD photo-curing printing, for example, the photo-curing 3D printer control system further includes other circuit modules required by the photo-curing 3D printer, such as a light source module, a communication module, a control module, an extended function module, and a power module. The light source module can be electrically connected with the controller through a system bus and is used for emitting ultraviolet light according to a control instruction emitted by the controller so as to provide light energy for the exposure module to solidify printing materials in the material groove of the 3D printer; the communication module can be electrically connected with the image processor through a system bus and is used for communicating with external equipment so as to receive printing files, control instructions, system upgrading files and the like sent by the external equipment, wherein the communication module can comprise a WIFI module, a USB module and the like; the control module can also be electrically connected with the image processor through a system bus and is used for receiving control instructions input by a user, wherein the control module can comprise input equipment such as a control panel, a control screen and the like; the expansion function module can be electrically connected with the image processor through various interfaces and is used for providing expansion functions for the control system, such as a multimedia display function, a microphone function, an infrared communication function and the like; finally, the power supply module can supply electric quantity for all the circuit modules, so that the control system can be ensured to run stably. And will not be described in further detail herein.
Further, after adjusting the driving parameters of the light source, the light source driving circuit performs detection driving on the adjusted driving parameters, calculates the target light source brightness of the light source according to the input light source driving parameters, sets a plurality of detection points to detect the actual light source brightness through the set brightness detection module, calculates whether the ratio of the average brightness value of the plurality of monitoring points to the target light source brightness is larger than a preset threshold, if so, judges that the current driving parameter adjustment is effective, and executes a 3D printing task, if the ratio is smaller than the preset threshold, judges that the current driving parameter adjustment is ineffective, and feeds back to a user that the 3D printing task cannot be performed, and reminds the user to adjust the new light source driving parameters.
The method and the device have the advantages that after the light source driving parameters adjusted by the user are ensured through the verification after calculation, the expected illumination intensity can be achieved, and compared with the prior art, the precision of the photo-curing printing operation can be ensured, so that the method and the device are further beneficial.
Further, when the user requests to modify the light source driving parameter beyond the parameter range mapped by the power management authority corresponding to the user, prohibiting the user from immediately modifying the light source driving parameter further includes: and recording the number of times n of attempting to modify the parameter beyond the range by the user, and simultaneously recording the number of times m of finally prohibiting modification, judging whether the number of times m of finally prohibiting modification is smaller than a second preset value after the number of times n reaches the first preset value, and expanding the power management authority corresponding to the user to enlarge the range of modifiable light source driving parameters when the number of times m is smaller than the second preset value.
Further, if it is determined that the input parameter information of the optical printing material needs to change the light source driving parameter, if it is determined that the light source driving parameter needs to be changed, modifying the light source driving parameter according to the need of the printing material or modifying the light source driving parameter according to the request of the user further includes: the LCD photo-curing 3D printer inquires the material number input by the user in the material database, judges whether the light intensity corresponding to the lowest photo-curing and the light intensity of the optimal photo-curing input by the user are matched with those in the material database, if so, judges whether the light intensity corresponding to the optimal photo-curing exceeds the parameter range mapped by the power management authority corresponding to the user, and if so, judges that the light source driving parameters need to be changed.
In this embodiment, a lower initial light source power is set to reduce power consumption, a user changes the intensity of a light source by, for example, modifying a current value, different users have different parameter modification rights to prevent a part of users from adopting a high-power light source to perform curing, meanwhile, for a user who has to modify parameters of the light source due to the requirement of materials, secondary verification can be performed to ensure that the user does not cause additional waste and damage, and the embodiment further provides a method for modifying the rights of the user, namely, recording the number n of times of attempting to modify the parameters by the user and recording the number m of times of finally prohibiting modification, judging whether the number m of times of finally prohibiting modification is smaller than a second preset value after the number n reaches the first preset value, and when judging that the number m is smaller than the second preset value, enlarging the power management rights corresponding to the user to enlarge the range of modifiable light source driving parameters so as to ensure the convenience of use of normal users.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
While the application has been described above with reference to various embodiments, it should be understood that many changes and modifications can be made without departing from the scope of the application. It is therefore intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that it is the following claims, including all equivalents, that are intended to define the spirit and scope of this application. The above examples should be understood as illustrative only and not limiting the scope of the application. Various changes and modifications to the present application may be made by one skilled in the art after reading the teachings herein, and such equivalent changes and modifications are intended to fall within the scope of the application as defined in the appended claims.

Claims (10)

1. The light source driving method of the LCD photo-curing 3D printer is characterized by comprising the following steps of:
step 1, when a user needs to change the light source driving parameters of the LCD photo-curing 3D printer, firstly, the identity information of the user needs to be verified, the LCD photo-curing 3D printer stores the identity information of the user in advance and distributes corresponding power management authorities for the identity information respectively, and after verification, the LCD photo-curing 3D printer judges the range of the light source driving parameters corresponding to the power management authorities corresponding to the user;
step 2, when the user requests to modify the light source driving parameters and exceeds the parameter range mapped by the power management authority corresponding to the user, the user is prohibited from immediately modifying the light source driving parameters, and the step 3 is entered; if the light source driving parameters which are requested to be modified are within the corresponding power management authorities, driving the light source according to the parameters which are requested to be modified by a user, receiving 3D model data to be printed and sent by the user after the light source detection, executing current printing, and modifying the light source driving parameters to default initial values after the current printing is finished;
step 3, after the user is prohibited from immediately modifying the light source driving parameters, allowing the user to input the parameters of the optical printing material in a preset time period, and if the user does not input corresponding data in the preset time period, finally prohibiting the user from executing the change of the light source parameters; if the user inputs corresponding data in a preset time period, judging whether the input parameter information of the adopted optical printing material needs to change the light source driving parameters, and if so, modifying the light source driving parameters according to the need of the printing material or modifying the light source driving parameters according to the request of the user, wherein the parameters of the optical printing material comprise the material number and the lowest light curing light intensity and the optimal light curing light intensity corresponding to the material number.
2. The method of claim 1, wherein the light source type of the LCD photo-curing 3D printer is LED beads, the light source driving parameters include driving current values for the LED beads, and the default initial values of the driving parameters of the light source are set to a lower power light source driving to enable only part of the printing material to be cured.
3. The method for driving a light source of an LCD photo-curing 3D printer according to claim 1, wherein after adjusting driving parameters of a light source, a light source driving circuit performs a detected driving on the adjusted driving parameters, calculates a target light source luminance of the light source according to the inputted driving parameters of the light source, sets a plurality of detection points to detect an actual light source luminance through a set luminance detection module, calculates whether a ratio of an average luminance value of the plurality of detection points to the target light source luminance is greater than a preset threshold, determines that the current driving parameter adjustment is effective if the ratio is greater than the preset threshold, and performs a 3D printing job, and if the ratio is less than the preset threshold, determines that the current driving parameter adjustment is ineffective, feeds back to a user that the 3D printing job cannot be performed, and reminds a user of readjusting the driving parameters of the light source.
4. The method of claim 2, wherein when the user requests the light source driving parameter to be modified to exceed the parameter range mapped by the power management authority corresponding to the user, prohibiting the user from immediately modifying the light source driving parameter further comprises: and recording the number of times n of attempting to modify the parameter beyond the range by the user, and simultaneously recording the number of times m of finally prohibiting modification, judging whether the number of times m of finally prohibiting modification is smaller than a second preset value after the number of times n reaches the first preset value, and expanding the power management authority corresponding to the user to enlarge the range of modifiable light source driving parameters when the number of times m is smaller than the second preset value.
5. The method of claim 1, wherein determining whether the input parameter information of the optical printing material is required to change the light source driving parameter, and if it is determined that the light source driving parameter is required to be changed, modifying the light source driving parameter according to the requirement of the printing material or modifying the light source driving parameter according to the requirement of the user further comprises: the LCD photo-curing 3D printer inquires the material number input by the user in the material database, judges whether the light intensity corresponding to the lowest photo-curing and the light intensity of the optimal photo-curing input by the user are matched with those in the material database, if so, judges whether the light intensity corresponding to the optimal photo-curing exceeds the parameter range mapped by the power management authority corresponding to the user, and if so, judges that the light source driving parameters need to be changed.
6. An LCD photo-curing 3D printer light source driving system, wherein the light source driving system comprises the following modules:
the identity verification module is used for verifying the identity information of a user when the user needs to change the light source driving parameters of the LCD light-cured 3D printer, the LCD light-cured 3D printer stores the identity information of the user in advance and distributes corresponding power management authorities for the identity information respectively, and after the identity information passes the verification, the LCD light-cured 3D printer judges the range of the light source driving parameters corresponding to the power management authorities corresponding to the user;
the parameter modification first module prohibits the user from immediately modifying the light source driving parameters and entering the parameter modification second module when the light source driving parameters requested to be modified by the user exceed the parameter range mapped by the power management authority corresponding to the user; if the light source driving parameters which are requested to be modified are within the corresponding power management authorities, driving the light source according to the parameters which are requested to be modified by a user, receiving 3D model data to be printed and sent by the user after the light source detection, executing current printing, and modifying the light source driving parameters to default initial values after the current printing is finished;
the parameter modification second module is used for allowing the user to input the parameters of the optical printing material in a preset time period after the user is forbidden to immediately modify the light source driving parameters, and finally forbidding the user to execute the change of the light source parameters if the user does not input corresponding data in the preset time period; if the user inputs corresponding data in a preset time period, judging whether the input parameter information of the adopted optical printing material needs to change the light source driving parameters, and if so, modifying the light source driving parameters according to the need of the printing material or modifying the light source driving parameters according to the request of the user, wherein the parameters of the optical printing material comprise the material number and the lowest light curing light intensity and the optimal light curing light intensity corresponding to the material number.
7. The light source driving system of an LCD light curing 3D printer according to claim 6, wherein the light source type of the LCD light curing 3D printer is LED beads, the light source driving parameter includes a driving current value for the LED beads, and the default initial value of the driving parameter of the light source is set to a lower power light source driving to enable only a portion of the printing material to be cured.
8. The light source driving system of an LCD photo-curing 3D printer according to claim 6, wherein after adjusting the driving parameters of the light source, the light source driving circuit performs a detected driving on the adjusted driving parameters, calculates a target light source luminance of the light source according to the inputted light source driving parameters, sets a plurality of detection points to detect an actual light source luminance through the set luminance detection module, calculates whether a ratio of an average luminance value of the plurality of detection points to the target light source luminance is greater than a preset threshold, determines that the current driving parameter adjustment is effective if the ratio is greater than the preset threshold, and performs a 3D printing job, and if the ratio is less than the preset threshold, determines that the current driving parameter adjustment is ineffective, feeds back to a user that the 3D printing job cannot be performed, and reminds the user of the adjustment of the light source driving parameters again.
9. The light source driving system of an LCD photo-curing 3D printer according to claim 7, wherein when the user requests the light source driving parameters to be modified beyond the parameter range mapped by the power management authority corresponding to the user, prohibiting the user from immediately modifying the light source driving parameters further comprises: and recording the number of times n of attempting to modify the parameter beyond the range by the user, and simultaneously recording the number of times m of finally prohibiting modification, judging whether the number of times m of finally prohibiting modification is smaller than a second preset value after the number of times n reaches the first preset value, and expanding the power management authority corresponding to the user to enlarge the range of modifiable light source driving parameters when the number of times m is smaller than the second preset value.
10. The light source driving system of an LCD photo-curing 3D printer according to claim 8, wherein determining whether the inputted parameter information of the adopted optical printing material needs to change the light source driving parameter, and if it is determined that the light source driving parameter needs to be changed, modifying the light source driving parameter according to the need of the printing material or modifying the light source driving parameter according to the request of the user further comprises: the LCD photo-curing 3D printer inquires the material number input by the user in the material database, judges whether the light intensity corresponding to the lowest photo-curing and the light intensity of the optimal photo-curing input by the user are matched with those in the material database, if so, judges whether the light intensity corresponding to the optimal photo-curing exceeds the parameter range mapped by the power management authority corresponding to the user, and if so, judges that the light source driving parameters need to be changed.
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CN115431527A (en) * 2022-08-30 2022-12-06 汕头大学 3D printing management optimization method and system
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