CN111970800A - Control method and device of ultraviolet light source and printing equipment - Google Patents
Control method and device of ultraviolet light source and printing equipment Download PDFInfo
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
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- 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
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- 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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Abstract
The invention provides a control method and a control device of an ultraviolet light source and printing equipment, and relates to the technical field of printing, wherein the control method of the ultraviolet light source is applied to the printing equipment, the printing equipment comprises a sensor, a constant current drive board and the ultraviolet light source, and the method comprises the following steps: acquiring first light source data acquired by a sensor; determining the duty ratio of a pulse signal for driving the constant current driving board according to the first light source data; the duty ratio of the pulse signal is used for controlling the ultraviolet light source to generate current corresponding to the target light energy. Therefore, first light source data can be acquired in real time through the sensor, the duty ratio of a pulse signal for driving the constant-current driving board is adjusted according to the first light source data, and then the current of the ultraviolet light source is adjusted, so that the ultraviolet light source generates target light energy under the driving of the current, the effect of keeping the light energy constant is achieved, and the printing quality of the printing equipment is improved.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a control method and device of an ultraviolet light source and printing equipment.
Background
With the development of three-dimensional (3D) printing technology, 3D printing devices are widely used, especially photo-curing printing devices. The existing photocuring printing equipment generally controls a constant current driver to transmit constant current to an ultraviolet light source through a switch of a main control board so as to control the light energy of the ultraviolet light source to keep constant. However, in the using process of the ultraviolet light source, the temperature of the ultraviolet light source can be increased along with the increase of the using time, so that the light energy of the ultraviolet light source is changed under the influence of the temperature, and the printing quality of the photocuring printing equipment is influenced.
Disclosure of Invention
The embodiment of the invention provides a control method and device of an ultraviolet light source and printing equipment, and aims to solve the problem that the printing quality is low due to the fact that the ultraviolet light source of the existing photocuring printing equipment is changed under the influence of temperature.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a control method for an ultraviolet light source, which is applied to a printing device, where the printing device includes a sensor, a constant current driving board, and an ultraviolet light source, and the method includes: acquiring first light source data acquired by the sensor; determining the duty ratio of a pulse signal for driving the constant current driving board according to the first light source data; and the duty ratio of the pulse signal is used for controlling the ultraviolet light source to generate current corresponding to the target light energy.
Optionally, the determining, according to the first light source data, a duty ratio of a pulse signal for driving the constant current driving board includes: determining a difference value between the current light energy and the target light energy according to the current light energy; determining the equivalent voltage of the difference value according to the difference value and a preset first algorithm; and determining the duty ratio of the pulse signal according to the equivalent voltage.
Optionally, said determining a difference from said target light energy based on said current light energy comprises: acquiring N latest acquired light energies in the current light energies, wherein N is a positive integer; calculating an average of the N light energies; determining a difference from the target light energy based on the average.
Optionally, the first light source data comprises a current temperature of the ultraviolet light source; the determining the duty ratio of the pulse signal for driving the constant current driving board according to the first light source data includes: determining the luminous efficiency of the ultraviolet light source according to the current temperature and a preset first mapping relation; determining the target power of the output current of the constant current driving board according to the luminous efficiency; determining the duty ratio of a pulse signal of the current for outputting the target power by the constant current driving board according to the target power and a preset second mapping relation; wherein the first mapping relation comprises a mapping relation between the current temperature and the luminous efficiency of the ultraviolet light source, and the second mapping relation comprises a mapping relation between the target power and the duty ratio of the pulse signal.
In a second aspect, an embodiment of the present invention further provides a printing apparatus, including: the device comprises a sensor, a constant current driving board, an ultraviolet light source and a main control board; the output end of the sensor is connected with the input end of the main control board, the output end of the main control board is connected with the input end of the constant current driving board, and the output end of the constant current driving board is connected with the ultraviolet light source; the sensor is used for acquiring first light source data; the main control board is used for acquiring first light source data acquired by the sensor; determining the duty ratio of a pulse signal for driving the constant current driving board according to the first light source data; the constant current drive board is used for outputting and controlling the current corresponding to the target light energy generated by the ultraviolet light source according to the duty ratio of the pulse signal.
Optionally, the printing apparatus further comprises a liquid crystal screen, the sensor comprising a photosensor; the photoelectric sensor is arranged on the end face, close to the ultraviolet light source, of the liquid crystal screen.
Optionally, the sensor comprises a temperature sensor; wherein, temperature sensor set up in on ultraviolet light source's the lamp plate.
In a third aspect, an embodiment of the present invention further provides a control apparatus for an ultraviolet light source, which is applied to a printing device, where the printing device includes a sensor, a constant current driving board, and an ultraviolet light source, and the apparatus includes: the acquisition module is used for acquiring first light source data acquired by the sensor; the determining module is used for determining the duty ratio of a pulse signal for driving the constant current driving board according to the first light source data; and the duty ratio of the pulse signal is used for controlling the ultraviolet light source to generate current corresponding to the target light energy.
In a fourth aspect, the embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when being executed by a processor, the computer program implements the steps of the control method for the ultraviolet light source.
In the embodiment of the invention, first light source data acquired by a sensor is acquired; determining the duty ratio of a pulse signal for driving the constant current driving board according to the first light source data; the duty ratio of the pulse signal is used for controlling the ultraviolet light source to generate current corresponding to the target light energy. Therefore, first light source data can be acquired in real time through the sensor, the duty ratio of a pulse signal for driving the constant-current driving board is adjusted according to the first light source data, and then the current of the ultraviolet light source is adjusted, so that the ultraviolet light source generates target light energy under the driving of the current, the effect of keeping the light energy constant is achieved, and the printing quality of the printing equipment is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flowchart of a control method of an ultraviolet light source according to an embodiment of the present invention;
FIG. 2 is a second flowchart of a control method of the ultraviolet light source according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the adjustment of the light energy of the UV light source provided by an embodiment of the present invention;
FIG. 4 is a third flowchart of a control method of the ultraviolet light source according to the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a printing apparatus provided by an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a control device of an ultraviolet light source according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a control method of an ultraviolet light source according to an embodiment of the present invention, and as shown in fig. 1, the control method of an ultraviolet light source is applied to a printing apparatus, the printing apparatus includes a sensor, a constant current driving board, and an ultraviolet light source, and the method includes the following steps:
and step 110, acquiring first light source data acquired by the sensor.
The device of the embodiment of the application is a printing device, the printing device at least comprises a sensor, a main control board, a constant current drive board and an ultraviolet light source, wherein the output end of the sensor is connected with the input end of the main control board, the output end of the main control board is connected with the input end of the constant current drive board, and the output end of the constant current drive board is connected with the ultraviolet light source. The sensor collects first light source data of the ultraviolet light source and sends the first light source data to the main control board. The main control board acquires first light source data acquired by the sensor and outputs a pulse signal with a corresponding duty ratio. The constant current drive board outputs current with corresponding magnitude according to the duty ratio of the pulse signal so as to control the light energy of the ultraviolet light source according to the magnitude of the current.
The first light source data may be current light energy of the ultraviolet light source, or may also be temperature data of the ultraviolet light source, which is not specifically limited in the embodiment of the present application. The first light source data may be obtained by different sensors, such as a photoelectric sensor to obtain current light energy of the ultraviolet light source, a temperature sensor to obtain temperature data of the ultraviolet light source, and the like.
And step 120, determining the duty ratio of a pulse signal for driving the constant current driving board according to the first light source data.
After the main control board acquires the first light source data, the main control board can analyze the first light source data so as to determine the duty ratio of a pulse signal required to be output by the main control board, wherein the duty ratio of the pulse signal is used for controlling the ultraviolet light source to generate current corresponding to the target light energy. The main control board adjusts the duty ratio of the pulse signal after determining the duty ratio of the pulse signal, the pulse signal is input to the constant current driving board, the constant current driving board outputs corresponding current according to the duty ratio of the pulse signal, and the ultraviolet light source generates target light energy under the action of the current.
Specifically, corresponding analysis may be performed according to the type of the first light source data, for example, when the first light source data is current light energy of the ultraviolet lamp, the current light energy may be compared with set target light energy, and when the current light energy is less than the target light energy, the duty ratio of the pulse signal may be increased to increase the current of the constant current driving board; when the current light energy is greater than the target light energy, the duty cycle of the pulse signal may be reduced to reduce the current of the constant current drive board. Therefore, the duty ratio of the pulse signal is controlled by the main control board, the effect of adjusting the current of the constant current driving board is achieved, and the light energy of the ultraviolet light source is kept at a constant value. If the first light source data is the current temperature of the ultraviolet lamp, the current temperature and a preset first mapping relation can be used for determining the luminous efficiency of the current temperature, so that the target power required by reaching the target light energy is determined, and further the output power of the constant-current driving board is controlled to reach the target power by controlling the duty ratio of the pulse signal, so that the light energy of the ultraviolet light source is maintained at the target light energy.
In this embodiment, the sensor acquires the first light source data in real time, and adjusts the duty ratio of the pulse signal input to the driving constant current driving board according to the first light source data, so as to adjust the current of the ultraviolet light source, so that the ultraviolet light source generates the target light energy under the driving of the current, the effect of keeping the light energy constant is achieved, and the printing quality of the printing device is improved.
Further, referring to fig. 2, fig. 2 is a second flowchart of a control method of the ultraviolet light source according to an embodiment of the present invention, and based on the embodiment shown in fig. 1, the step 120 of determining the duty ratio of the pulse signal for driving the constant current driving board according to the first light source data includes the following steps:
and step 121, determining a difference value between the current light energy and the target light energy.
In the case that the first light source data is the current light energy of the ultraviolet light source, the obtained current light energy may be compared with the target light energy, so as to determine a difference between the two. It should be noted that the target light energy may be set according to actual needs, may be preset by a user, or may be default set when the user leaves a factory, and the present application is not limited specifically.
And step 122, determining the equivalent voltage of the difference value according to the difference value and a preset first algorithm.
The preset first algorithm may be a PID (where P is proportionality, I is Integral, D is Differential, and D is Differential) algorithm, and the PID algorithm may calculate an equivalent voltage of a difference between the current light energy and the target light energy according to the following calculation formula:
U(t)＝Kp*e(t)+C1； (1)
where u (t) is the equivalent voltage of the difference, Kp is the scaling factor, e (t) is the difference between the current light energy and the target light energy, and C1 is a constant, that is, the equivalent voltage required to be output by the main control board when the current light energy is equal to the target light energy.
And step 123, determining the duty ratio of the pulse signal according to the equivalent voltage.
The Pulse signal is a Pulse Width Modulation (PWM) signal, and its main parameters are duty ratio and frequency, in an embodiment, a fixed-frequency and adjustable-duty ratio PWM signal is selected for output. The frequency can be any frequency such as 2KHz, and the duty ratio can be adjusted according to the equivalent voltage. Specifically, the duty cycle is determined according to the following formula:
P＝k*U(t)+C2； (2)
wherein P is the duty cycle of the pulse signal, k is the scaling factor, u (t) is the equivalent voltage of the difference, and C2 is a constant.
After the duty ratio of the pulse signal is determined, the main control board adjusts the duty ratio of the output pulse signal to the constant current driving board, and the constant current driving board outputs corresponding current according to the duty ratio of the pulse signal so as to control the ultraviolet light source to expose according to preset target light energy.
A schematic diagram of the light energy adjustment of the uv light source by PID algorithm is shown in fig. 3, firstly, inputting preset target light energy and current light energy obtained by a photoelectric sensor, proportionally adjusting the target light energy and the current light energy (namely calculating by using a formula 1) to obtain equivalent voltage of a difference value of the target light energy and the current light energy, then determining the duty ratio of a pulse signal (namely calculating by using a formula 2) according to the obtained equivalent voltage, transmitting the pulse signal to a constant current driving board, outputting current with corresponding magnitude by the constant current driving board to control an ultraviolet light source to emit light according to the current, meanwhile, the light energy obtained after current adjustment is obtained through the photoelectric sensor, the adjusted light energy is input and is subjected to proportion adjustment with the preset target light energy again, and therefore dynamic adjustment of the light energy of the ultraviolet light source is achieved.
In this embodiment, by comparing the current light energy with the target light energy, the duty ratio of the pulse signal is adjusted when the current light energy and the target light energy have a difference, so that the current light energy is dynamically adjusted, and the current light energy can be kept constant at the target light energy.
Further, the step 121 of determining the difference between the current light energy and the target light energy according to the current light energy includes the following steps:
acquiring N latest acquired light energies in the current light energies, wherein N is a positive integer;
calculating the average value of the N light energies;
from the average, the difference from the target light energy is determined.
N is any positive integer, and may be any value such as 1, 2, 3, …, and the like. The N light energies which are collected latest are obtained, the average value of the N light energies is calculated, and the difference value between the average value and the target light energy is used as the difference value between the current light energy and the target light energy. And when N is 1, selecting one light energy data collected latest as the current light energy, when N is 2, selecting the average value of the two light energy data collected latest as the current light energy, and so on. It should be noted that the value of N may be set according to actual situations, and the present application is not particularly limited.
In this embodiment, the average value of the latest collected multiple light energies is used as the current light energy participating in the calculation, which is beneficial to filtering the current light energy, so as to avoid the occurrence of inaccurate final result caused by inaccurate collected light energy data due to accidental reasons, and simultaneously, the frequency of participation of the main control board in the PID calculation can be reduced, thereby reducing the load of the main control board.
Further, referring to fig. 4, fig. 4 is a third flowchart of a control method of the ultraviolet light source according to an embodiment of the present invention, and based on the embodiment shown in fig. 1, the step 120 of determining the duty ratio of the pulse signal for driving the constant current driving board according to the first light source data includes the following steps:
and step 124, determining the luminous efficiency of the ultraviolet light source according to the current temperature and a preset first mapping relation.
The first mapping relation may be obtained through testing in advance, and includes corresponding light emitting efficiencies of the ultraviolet light source at different temperatures. And under the condition that the first light source data is the current temperature of the ultraviolet light source, the main control board acquires the current temperature acquired by the temperature sensor and matches the current temperature with the temperature value in the first mapping relation, so that the luminous efficiency of the ultraviolet light source corresponding to the current temperature is determined.
And step 125, determining the target power of the output current of the constant current driving board according to the luminous efficiency.
Since the target light energy of the ultraviolet light source is the luminous efficiency output power, the target power of the output current of the constant current driving board can be further determined when the target light energy and the luminous efficiency are determined.
And step 126, determining the duty ratio of the pulse signal of the current for outputting the target power by the constant current driving board according to the target power and a preset second mapping relation.
The second mapping relationship may be obtained through testing in advance, and includes output power corresponding to the pulse signal under different duty ratios. After the target power is determined, the target power may be matched with the output power in the second mapping relationship, so as to determine the duty ratio of the pulse signal corresponding to the target power output by the constant current driving board. Therefore, after the duty ratio of the pulse signal is determined, the duty ratio of the pulse signal is adjusted by the main control board and is input to the constant current driving board, the constant current driving board outputs current with corresponding target power according to the duty ratio of the pulse type, and the ultraviolet light source generates target light energy under the action of the current.
In this embodiment, by obtaining the current temperature of the ultraviolet light source, and determining the duty ratio of the pulse signal corresponding to the current temperature according to the preset first mapping relation and the second mapping relation, the current of the constant current driving board outputting the target power is further determined, so that the light energy of the ultraviolet light source is constant at the target light energy, and the printing quality of the printing device is improved.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a printing apparatus according to an embodiment of the present invention. As shown in fig. 5, the printing apparatus includes: a sensor 501, a constant current driving board 502, an ultraviolet light source 503 and a main control board 504; the output end of the sensor 501 is connected with the input end of the main control board 504, the output end of the main control board 504 is connected with the input end of the constant current driving board 502, and the output end of the constant current driving board 502 is connected with the ultraviolet light source 503; a sensor 501 for collecting first light source data; the main control board 504 is configured to obtain first light source data acquired by the sensor 501; determining the duty ratio of a pulse signal for driving the constant current driving board 502 according to the first light source data; the constant current driving board 502 is configured to output a current corresponding to the target light energy generated by the ultraviolet light source 503 according to the duty ratio of the pulse signal.
In this embodiment, the printing device may obtain the first light source data in real time through the sensor 501, and transmit the first light source data to the main control board 504, the main control board 504 adjusts the duty ratio of the pulse signal according to the difference between the first light source data and the target light energy, and outputs the adjusted pulse signal to the constant current drive board 502, and the constant current drive board 502 adjusts the magnitude of the output current or the output power of the current according to the duty ratio of the pulse signal, so that the ultraviolet light source 503 generates light energy corresponding to the target light energy under the driving of the current, thereby achieving the effect of keeping the light energy constant, and improving the printing quality of the printing device.
It should be noted that the structure of the printing apparatus is not limited to the structure of the printing apparatus, and the printing apparatus may include more or less components. Specifically, the printing apparatus may further include a liquid crystal panel support plate 506, a liquid crystal panel 505, a release film 507, a trough 508, a forming platform 509, and the like. The lcd panel supporting plate 506 is located below the lcd panel 505 and is used for supporting the lcd panel 505. The liquid crystal screen 505 is used for displaying a printed image, and the photosensitive resin at the position of the printed image can be cured under the irradiation of the ultraviolet light source 503. The release film 507 is used for generating release force, and is convenient for peeling the printing model. Tank 508 is used to hold the photosensitive resin. The forming platform 509 is used to drive the printing model to move upwards to complete the model printing of different slice layers.
Further, the sensor 501 may include a photosensor disposed on an end surface of the liquid crystal panel 505 near the ultraviolet light source 503. One or more photosensors may be provided here, and the present invention is not particularly limited. When there are a plurality of photoelectric sensors, the plurality of photoelectric sensors may be uniformly disposed on the end surface of the liquid crystal panel 505 close to the ultraviolet light source 503, and the current light energy may be determined by calculating an average value of light energies collected by the plurality of photoelectric sensors. Therefore, the difference between the current light energy and the target light energy can be determined through the current light energy acquired by the photoelectric sensor, and then the duty ratio of the pulse signal for driving the constant-current driving board is determined, so that the light energy on the end face, close to the ultraviolet light source 503, of the liquid crystal screen 505 is always kept at the target light energy. In an embodiment, it is preferable that the photoelectric sensor is disposed at an edge position of a printing area on an end surface of the liquid crystal screen 505, which is close to the ultraviolet light source 503, so that exposure of the ultraviolet light source 503 on the liquid crystal screen 505 is not affected, and current light energy at the printing position of the liquid crystal screen 505 can be collected in real time, and thus, monitoring and control of the current light energy of the ultraviolet light source can be realized through the photoelectric sensor, so as to ensure the printing quality of the printing apparatus.
Further, the sensor 501 includes a temperature sensor; wherein, the temperature sensor is arranged on the lamp panel of the ultraviolet light source 503. One or more temperature sensors may be used herein, and the present invention is not particularly limited. When the temperature sensors are multiple, the multiple temperature sensors can be uniformly arranged on the lamp panel of the ultraviolet light source 503, the current temperature of the ultraviolet lamp beads is determined by calculating the average value of the temperature values collected by the multiple temperature sensors, the luminous efficiency is determined by the current temperature, and then the target power of the output current of the constant-current drive board is determined, so that the light emitted by the lamp beads in the ultraviolet light source is always kept at the target light energy. Because the lamp beads of the ultraviolet light source 503 are uniformly distributed on the lamp panel, the temperature sensor is arranged on the lamp panel, the light emission of the lamp beads is not influenced, and the temperature of the lamp beads can be accurately obtained. In an embodiment, it is preferable that the temperature sensor is disposed at a middle position on the lamp panel, so that the temperature collected at the middle position is taken as the working temperature of the whole ultraviolet light source 503, thereby ensuring the accuracy of the working temperature of the whole ultraviolet light source.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a control device of an ultraviolet light source according to an embodiment of the present invention. As shown in fig. 6, the control device 600 of the ultraviolet light source is applied to a printing apparatus including a sensor, a constant current driving board, and an ultraviolet light source, and the control device 600 of the ultraviolet light source includes:
the acquisition module 601 is configured to acquire first light source data acquired by a sensor;
a determining module 602, configured to determine, according to the first light source data, a duty ratio of a pulse signal for driving the constant current driving board;
the duty ratio of the pulse signal is used for controlling the ultraviolet light source to generate current corresponding to the target light energy.
Further, the first light source data comprises a current light energy of the uv light source, and the determining module 602 comprises:
the first determining sub-module is used for determining the difference value between the current light energy and the target light energy according to the current light energy;
the second determining submodule is used for determining the equivalent voltage of the difference value according to the difference value and a preset first algorithm;
and the third determining submodule is used for determining the duty ratio of the pulse signal according to the equivalent voltage.
Further, the first determination submodule includes:
the acquisition unit is used for acquiring N latest acquired light energies in the current light energies, wherein N is a positive integer;
the calculating unit is used for calculating the average value of the N light energies;
and the determining unit is used for determining the difference value between the target light energy and the average value.
Further, the first light source data includes a current temperature of the ultraviolet light source; the determination module 602 includes:
the fourth determining submodule is used for determining the luminous efficiency of the ultraviolet light source according to the current temperature and a preset first mapping relation;
the fifth determining submodule is used for determining the target power of the output current of the constant current driving board according to the luminous efficiency;
the sixth determining submodule is used for determining the duty ratio of a pulse signal of current for outputting the target power by the constant-current driving board according to the target power and a preset second mapping relation;
the first mapping relation comprises a mapping relation between the current temperature and the luminous efficiency of the ultraviolet light source, and the second mapping relation comprises a mapping relation between the target power and the duty ratio of the pulse signal.
It should be noted that the control device for the ultraviolet light source can implement each process of the control method for the ultraviolet light source provided in the embodiment of the present application, and can achieve the same technical effect, and for avoiding repetition, details are not described here again.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-mentioned embodiment of the control method for an ultraviolet light source, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, 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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A control method of an ultraviolet light source is applied to printing equipment, and is characterized in that the printing equipment comprises a sensor, a constant current driving board and the ultraviolet light source, and the method comprises the following steps:
acquiring first light source data acquired by the sensor;
determining the duty ratio of a pulse signal for driving the constant current driving board according to the first light source data;
and the duty ratio of the pulse signal is used for controlling the ultraviolet light source to generate current corresponding to the target light energy.
2. The method of claim 1, wherein the first light source data includes a current light energy of the ultraviolet light source, and wherein determining the duty cycle of the pulse signal for driving the constant current driving board according to the first light source data includes:
determining a difference value between the current light energy and the target light energy according to the current light energy;
determining the equivalent voltage of the difference value according to the difference value and a preset first algorithm;
and determining the duty ratio of the pulse signal according to the equivalent voltage.
3. The method according to claim 2, wherein said determining a difference from said target light energy based on said current light energy comprises:
acquiring N latest acquired light energies in the current light energies, wherein N is a positive integer;
calculating an average of the N light energies;
determining a difference from the target light energy based on the average.
4. The method of claim 1, wherein the first light source data comprises a current temperature of the ultraviolet light source;
the determining the duty ratio of the pulse signal for driving the constant current driving board according to the first light source data includes:
determining the luminous efficiency of the ultraviolet light source according to the current temperature and a preset first mapping relation;
determining the target power of the output current of the constant current driving board according to the luminous efficiency;
determining the duty ratio of a pulse signal of the current for outputting the target power by the constant current driving board according to the target power and a preset second mapping relation;
wherein the first mapping relation comprises a mapping relation between the current temperature and the luminous efficiency of the ultraviolet light source, and the second mapping relation comprises a mapping relation between the target power and the duty ratio of the pulse signal.
5. A printing apparatus, characterized in that the printing apparatus comprises: the device comprises a sensor, a constant current driving board, an ultraviolet light source and a main control board;
the output end of the sensor is connected with the input end of the main control board, the output end of the main control board is connected with the input end of the constant current driving board, and the output end of the constant current driving board is connected with the ultraviolet light source;
the sensor is used for acquiring first light source data;
the main control board is used for acquiring first light source data acquired by the sensor; determining the duty ratio of a pulse signal for driving the constant current driving board according to the first light source data;
the constant current drive board is used for outputting and controlling the current corresponding to the target light energy generated by the ultraviolet light source according to the duty ratio of the pulse signal.
6. The printing device of claim 5, further comprising a liquid crystal screen, the sensor comprising a photosensor;
the photoelectric sensor is arranged on the end face, close to the ultraviolet light source, of the liquid crystal screen.
7. The printing apparatus of claim 5, wherein the sensor comprises a temperature sensor;
wherein, temperature sensor set up in on ultraviolet light source's the lamp plate.
8. A control device of an ultraviolet light source is applied to printing equipment, and is characterized in that the printing equipment comprises a sensor, a constant current driving board and the ultraviolet light source, and the device comprises:
the acquisition module is used for acquiring first light source data acquired by the sensor;
the determining module is used for determining the duty ratio of a pulse signal for driving the constant current driving board according to the first light source data;
and the duty ratio of the pulse signal is used for controlling the ultraviolet light source to generate current corresponding to the target light energy.
9. The apparatus of claim 8, wherein the first light source data comprises a current light energy of the uv light source, and the determining module comprises:
a first determining sub-module for determining a difference to the target light energy based on the current light energy;
the second determining submodule is used for determining the equivalent voltage of the difference value according to the difference value and a preset first algorithm;
and the third determining submodule is used for determining the duty ratio of the pulse signal according to the equivalent voltage.
10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the method of controlling a uv light source as claimed in any one of the claims 1 to 4.
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