Flying ink droplet shooting control method and device, equipment and storage medium

Abstract

The invention discloses a shooting control method, device and equipment for flying ink droplets and a storage medium, which are generated in the process that a nozzle module continuously moves relative to an observation station. The method comprises the following steps: acquiring an encoder signal for controlling a spray head module / an observation module to move, a relative position between a target nozzle on the spray head module and an observation station, and an injection signal of continuous ink injection of the target nozzle at a set frequency; according to the relative position and an encoder signal for controlling the nozzle module / observation module to move next time, whether the target nozzle reaches an observation station or not in the process that the encoder signal controls the nozzle module / observation module to move next time is judged; if so, determining that the next encoder signal is the first target signal; taking a first injection signal of the target nozzle after the first target signal as a second target signal; and when the second target signal is obtained, the observation module is controlled to execute an ink droplet observation action. Finally, the ink droplet observation task of the multi-nozzle spray head module can be quickly and continuously completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of inkjet printing droplet observation, in particular to a flying ink droplet shooting control method, device, equipment and storage medium. BACKGROUND

[0002] In the field of inkjet printing technology, observing and analyzing flying ink droplets ejected from the nozzle is a key link to ensure printing quality, detect nozzle state and optimize printing parameters. By observing the shape, flying speed and direction of the ink droplets, it can be determined whether the inkjet system is working properly in time, thereby ensuring the accuracy and consistency of the final printing effect. This technology is particularly important in high-precision industrial printing, electronic circuit manufacturing and high-end applications such as biomedicine.

[0003] With the development of technology, in order to improve printing efficiency, using array type nozzle module with multiple nozzles has become an industry trend. Correspondingly, it is necessary to observe the ink droplets of each nozzle arranged in the array one by one to ensure that the performance of each nozzle meets the requirements. At present, the conventional observation method mainly moves the nozzle module or the observation system one by one to move a to-be-tested nozzle to a preset fixed observation station, and after completing the ink droplet shooting and data collection of the single nozzle at this position, it is moved to the next nozzle position, and the cycle is repeated until the detection of all nozzles on the module is completed.

[0004] However, the intermittent working mode of "moving-positioning-observation" has obvious efficiency bottleneck. Since the observation of each nozzle needs to go through the process of moving, mechanical positioning and stable waiting, the whole detection process is divided into multiple independent steps, which leads to a long total time when detecting the array type nozzle module containing multiple nozzles, which becomes a major obstacle to improving production efficiency and online detection ability, and a solution that can realize fast and continuous observation is urgently needed. SUMMARY

[0005] The present application provides a flying ink droplet shooting control method, device, equipment and storage medium, which can solve the problem of low efficiency and long total time when detecting the array type nozzle module containing multiple nozzles in the prior art.

[0006] In a first aspect, the embodiments of the present application provide a flying ink droplet shooting control method, which adopts the following technical scheme: The flying ink droplet shooting control method occurs in the process of the nozzle module continuously moving relative to the observation station, which includes the following steps: Obtaining the encoder signal for controlling the movement of the nozzle module / observation module, the relative position between the target nozzle on the nozzle module and the observation station, and the ejection signal of the target nozzle continuously ejecting ink at a set frequency. determining whether the target nozzle will reach the observation station during the movement of the printhead module / observation module according to the relative position and the next encoder signal controlling the movement of the printhead module / observation module; if the target nozzle will reach the observation station, determining the next encoder signal as a first target signal; taking the first jetting signal of the target nozzle triggered by the first target signal as a second target signal; when the second target signal is obtained, controlling the observation module to perform a droplet observation action.

[0007] In combination with the first aspect, in an implementation manner, in the step of taking the first jetting signal of the target nozzle triggered by the first target signal as a second target signal, the first jetting signal after the rising edge of the trigger of the first target signal is taken as the second target signal; and in the step of when the second target signal is obtained, controlling the observation module to perform a droplet observation action, the rising edge of the trigger of the second target signal is taken as a trigger condition of triggering the observation module to perform the droplet observation action.

[0008] In combination with the first aspect, in an implementation manner, in the step of if the target nozzle will reach the observation station, determining the next encoder signal as a first target signal, and obtaining a jetting signal of the target nozzle for continuous ink ejection at a set frequency, the set frequency is greater than the frequency of the encoder signal.

[0009] In combination with the first aspect, in an implementation manner, the set frequency satisfies that the moving distance of the printhead module in the time interval of two adjacent jetting signals does not exceed the maximum lateral deviation of the droplet allowed on the captured image of the observation module.

[0010] In combination with the first aspect, in an implementation manner, the step of when the second target signal is obtained, controlling the observation module to perform a droplet observation action, comprises the following steps: controlling a strobe light source in the observation module to perform strobe light compensation at a first delay time after the second target signal is obtained; wherein the range of the first delay time is obtained according to the distance range allowed by the captured droplet in the vertical direction of the captured image of the observation module; controlling a camera in the observation module to perform exposure at a second delay time after the second target signal is obtained; wherein the second delay time is less than the first delay time.

[0011] In combination with the first aspect, in an implementation manner, the camera in the observation module is controlled to perform exposure at the second delay time after the second target signal is acquired, In the exposure process, the light source flashes once or performs interval flash exposure multiple times.

[0012] In combination with the first aspect, in an implementation manner, if the target nozzle reaches the observation station, the next encoder signal is determined as a first target signal, and a first jet signal of the target nozzle triggered by the first target signal is determined as a second target signal, the method further includes the following steps: After a set time length after the first target signal is acquired, the observation module is controlled to perform a droplet observation action; wherein the set time length is less than the first delay time, and a difference between the set time length and the first delay time is greater than a minimum value of the first delay time.

[0013] The second aspect provides a flying droplet photographing control device, which adopts the following technical scheme: A flying droplet photographing control device, the device includes: An acquisition module configured to acquire an encoder signal for controlling movement of a nozzle module / observation module, a relative position between a target nozzle on the nozzle module and an observation station, and a jet signal for the target nozzle to continuously jet ink at a set frequency; A position judgment module configured to determine, according to the relative position and the next encoder signal for controlling movement of the nozzle module / observation module, whether the target nozzle will reach the observation station in a movement process controlled by the next encoder signal; A photographing trigger module configured to, if the target nozzle will reach the observation station, determine the next encoder signal as a first target signal, trigger a first jet signal of the target nozzle after the first target signal as a second target signal, and control the observation module to perform a droplet observation action when the second target signal is acquired.

[0014] The third aspect provides a flying droplet photographing control device, which adopts the following technical scheme: A flying droplet photographing control device, the flying droplet photographing control device includes a processor, a memory, and a flying droplet photographing control program stored in the memory and executable by the processor, wherein when the flying droplet photographing control program is executed by the processor, the steps of the flying droplet photographing control method are implemented.

[0015] The fourth aspect provides a storage medium, which adopts the following technical scheme: A storage medium, a flight ink droplet shooting control program is stored on the storage medium, wherein the flight ink droplet shooting control program is executed by a processor to implement the steps of the flight ink droplet shooting control method described above.

[0016] The technical scheme provided by the embodiments of the present application has the following beneficial effects: The flight ink droplet shooting control method, device, equipment and storage medium provided by the present application first acquire the position of the current target nozzle, and further calculate and determine whether the target nozzle can be smoothly moved to the observation station when the next encoder signal is executed according to the encoder signal for controlling the movement of the nozzle module / observation module. If so, the first ejection signal after the next encoder signal is triggered is confirmed as the closest observation opportunity, and the ejection signal is further used as a trigger signal for triggering the observation module to execute the ink droplet observation action. Finally, during the relative movement of the nozzle module and the observation station, the ink droplet ejection and the ink droplet observation action of the target nozzle can be triggered and executed at the same time in a very short time after the nozzle module corresponds to the observation station, so that the observation of the target nozzle is successfully completed, and the observation does not need to be performed after the relative position of the nozzle module is paused, thereby achieving rapid and continuous completion of the ink droplet observation task of the multi-nozzle array type nozzle module. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole flowchart of the flight ink droplet shooting control method embodiment of the present application; Figure 2 It is a trigger diagram of various signals in the flight ink droplet shooting control method embodiment of the present application; Figure 3 It is a trigger diagram of various signals in another flight ink droplet shooting control method embodiment of the present application; Figure 4 It is a functional module diagram in the flight ink droplet shooting control device embodiment of the present application; Figure 5 It is a hardware structure diagram of the flight ink droplet shooting control device involved in the embodiment of the present application. DETAILED DESCRIPTION

[0018] In order to enable personnel in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] The application embodiment provided flight ink droplet shooting control method, device, equipment and storage medium, its invention main point lies in, first through obtaining the position of current target nozzle, and further calculates and judges whether the target nozzle can be successfully moved to the observation station in the next encoder signal execution according to the encoder signal of controlling the movement of the observation module. If it can, the first jet signal after the next encoder signal trigger can be used as the closest observation opportunity, and the jet signal is further used as the trigger signal of triggering the observation module to execute the ink droplet observation action.

[0020] Finally, in the process of relative movement of the nozzle module and the observation station, the ink droplet jet of the target nozzle and the ink droplet observation action can be triggered at the same time in a very short time after the nozzle module corresponds to the observation station, the observation of the target nozzle is successfully completed, and the observation is not needed after the relative position of the nozzle module is paused. The ink droplet observation task of the multi-nozzle array type nozzle module is quickly and continuously completed.

[0021] In order to make the purpose, technical scheme and advantages of the application clearer, the application embodiments will be described in further detail below with reference to the drawings.

[0022] In a first aspect, the application embodiment provides a flight ink droplet shooting control method.

[0023] In an embodiment, with reference to Figure 1 , Figure 1 The flowchart of the first embodiment of the flight ink droplet shooting control method of the application. The steps involved in the flight ink droplet shooting control method provided by the application occur in the process of continuous movement of the nozzle module relative to the observation station, so as to realize the observation of the plurality of nozzles on the nozzle module quickly. It should be noted that the continuous movement process here specifically refers to the encoder signal for controlling the movement of the nozzle module relative to the observation station being continuously executed at a predetermined frequency, rather than the nozzle module relative to the observation station being moved at every moment. Specifically, the flight ink droplet shooting control method comprises: S100, obtaining the encoder signal for controlling the movement of the nozzle module / observation module, the relative position between the target nozzle on the nozzle module and the observation station, and the jet signal for continuous ink jetting of the target nozzle at a set frequency; Wherein, the driving object of the encoder signal is the nozzle module / observation module, which may be different in different embodiments, for example, there is a scheme of actively controlling the nozzle module to move, and there is also a scheme of actively controlling the observation module to move. In the application, the embodiment of actively controlling the nozzle module to move by the driving device is taken as an example to explain the subsequent steps.

[0024] One of the purposes of step S100 is to further calculate the relative position between the target nozzle and the observation station by mastering the trigger signal, i.e. the encoder signal, for driving the nozzle module to move, and the specific calculation process is based on the fixed conveying distance or conveying time corresponding to a single encoder signal, so that the actual position of the nozzle module can be derived and mastered by the trigger quantity of the encoder signal and the initial position of the target nozzle, i.e. the relative position between the nozzle module and the observation station can be mastered; in addition, the obtained encoder signal will further serve the determination of other key signals in the subsequent steps, which will be explained and described later. In addition, since the method provided in the present application occurs in the process of continuous movement of the nozzle module, in order to ensure that the observation work of each nozzle can be quickly realized, each nozzle will continuously jet ink at a set frequency after being confirmed as a target nozzle, so as to be in an ink jetting state and be observed by the observation assembly in the first time after moving to the observation station.

[0025] S200, judging whether the target nozzle will reach the observation station in the movement process of the nozzle module / observation module controlled by the next encoder signal according to the relative position and the next encoder signal for controlling the movement of the nozzle module / observation module. Specifically, step S200 will be used to further calculate whether the target nozzle will reach the observation station after the next encoder signal is triggered according to the relative position between the current nozzle module and the observation station and the encoder signal, and the specific calculation process is consistent with that in step S100, which will not be repeated here.

[0026] S300, if the observation station is reached, determining the next encoder signal as the first target signal. When the judgment result of step S200 is that the target nozzle will reach the observation station in the next encoder signal execution process, it means that the next encoder signal is the closest opportunity to realize the ink drop observation, so step S300 will determine that the signal is the first target signal, and the first target signal will be used as the basis to realize the related trigger process of ink drop observation in the subsequent steps.

[0027] S400, taking the first jetting signal of the target nozzle triggered after the first target signal as the second target signal. S500, when the second target signal is obtained, controlling the observation module to perform ink drop observation action.

[0028] Specifically, refer to Figure 2In this embodiment, through steps S400 and S500, the first ejection signal after the trigger rising edge of the first target signal is taken as the second target signal, and after the second target signal is actually obtained, the observation module can be directly controlled to perform the ink drop observation action; meanwhile, according to the second target signal, the observation module is directly controlled to perform the ink drop observation action, and the trigger rising edge of the second target signal is specifically taken as the trigger condition for triggering the observation module to perform the ink drop observation action.

[0029] In this way, by taking the trigger rising edge of the first target signal as a reference to determine the subsequent first ejection signal as the second target signal, the closest ejection signal to the target nozzle reaching the observation station is found, and at the first moment of performing ink ejection according to the ejection signal, the observation module is triggered to perform ink drop observation, thereby ensuring that the ejection and observation work can be quickly completed after the target nozzle moves to the observation station, avoiding the continuous movement of the printhead module being paused, and thereby quickly and effectively completing the dynamic ink drop observation of the target nozzle.

[0030] In this embodiment, in order to quickly respond to the execution logic of steps S400 and S500, a trigger board capable of generating a trigger signal with a variable pulse width is specifically provided. Meanwhile, the trigger board is electrically connected to control the driving device of the printhead module, the ejection control device of the printhead module, and the observation assembly, so as to be capable of mastering the encoder signal and the ejection signal, and thereby after determining that the next encoder signal is the first target signal, the trigger board synchronously generates a trigger rising edge of a trigger signal at the moment when the first target signal is obtained, and after obtaining the first ejection signal thereafter, takes it as a trigger falling edge of the trigger signal, so as to obtain a complete trigger signal, and the trigger falling edge also synchronously controls the observation assembly to start performing ink drop observation, thereby smoothly realizing the execution logic of steps S400 and S500. It can be seen that the pulse width of the trigger signal is specifically based on the time interval between the first target signal and the first ejection signal after it, which may be different each time, and therefore the trigger board capable of generating a trigger signal with a variable pulse width is used in this application.

[0031] Further, in some embodiments, if the target nozzle reaches the observation station, the next encoder signal is determined to be the first target signal, and the ejection signal of the target nozzle continuously performing ink ejection at a set frequency is obtained, The set frequency is greater than the frequency of the encoder signal.

[0032] In this way, it is ensured that between two adjacent encoder signals, there is an ejection signal that can be determined as the second target signal, thereby further ensuring that ink drop ejection and ink drop observation can be triggered at the same time when the target nozzle is at the observation station.

[0033] Further, the set frequency also needs to satisfy that the moving distance of the printhead module within the time interval of two adjacent ejection signals does not exceed the maximum lateral deviation of the ink droplet allowed on the captured image of the observation module.

[0034] Since in practice, there is still a time interval between the first target signal and the second target signal, and in this time interval, the printhead module can continue to travel in the execution process of an encoder signal, it can cause the ink droplet to deviate in the captured image in the moving direction of the printhead module in the triggered ink droplet observation. In order to ensure that the ink droplet can be in the appropriate range in the captured image in this case, the maximum time interval of the first target signal and the second target signal is combined with the moving speed of the printhead module to calculate the minimum set frequency required by the target nozzle.

[0035] Further, with reference to Figure 2 In some embodiments, when the second target signal is acquired, the step S500 of controlling the observation module to perform the ink droplet observation action includes the following steps: S510, at a first delay time after the second target signal is acquired, a stroboscopic fill light signal is triggered to control the light source in the observation module to perform stroboscopic fill light; wherein the range of the first delay time is obtained according to the distance range allowed by the captured ink droplet in the vertical direction of the captured image of the observation module, so as to ensure that the ink droplet can be captured by the observation module after flying to the appropriate position, so that the ink droplet image can be presented in the center area of the captured image.

[0036] S520, at a second delay time after the second target signal is acquired, an exposure signal of the camera is triggered to control the camera in the observation module to perform exposure; wherein the second delay time is less than the first delay time, so as to ensure that the ink droplet is illuminated and reflected within the exposure time, and the ink droplet profile presented on the captured image can be clearer.

[0037] In different embodiments, the light source can perform stroboscopic fill light once or multiple times at intervals in a single exposure process. When the stroboscopic fill light is performed once, there will be only one ink droplet image in the obtained captured image, and when the stroboscopic fill light is performed multiple times, there will be multiple spaced ink droplet images in the obtained captured image.

[0038] Further, based on the stroboscopic fill light and capture of the ink droplet after the first delay time in the step S500, the present embodiment further includes a step S600 after the step S400, and the step S600 and the step S500 are different logics performed in two different cases. Specifically, the step S600 is: S600. After obtaining the first target signal for a set duration, control the observation module to perform the ink droplet observation action; wherein, the set duration is less than the first delay time, and the difference between the set duration and the first delay time is greater than the minimum value of the first delay time.

[0039] Specifically, since the time interval between the first target signal and the subsequent first injection signal may vary in each execution process, and is at most close to the actual interval period between two adjacent injection signals, therefore, referring to Figure 3 With the observation module having a first delay time, the observation action of the observation module can be triggered a certain amount of time in advance. That is, before the rising edge of the next ejection signal, the falling edge of the trigger signal of the energy emission plate is generated in advance, and the observation module is controlled to start executing ink droplet observation, entering the timing of the first delay time and the second delay time. However, when the falling edge of the trigger signal is generated in advance, it is necessary to ensure that the ink droplets ejected later can still fly to the appropriate position on the captured image. That is, the advance time must satisfy the difference between it and the first delay time, which should be greater than the minimum value of the first delay time, to ensure that the ink droplets can still fly to the required area in the vertical direction. This setting can further ensure the rapid triggering of ink droplet observation action, while ensuring that flying ink droplets can be successfully captured. Moreover, in this scheme, rapid execution can be performed based on the trigger signal generated by the energy emission plate, which is easy to implement under the aforementioned scheme.

[0040] Secondly, embodiments of this application also provide a device for controlling the capture of flying ink droplets.

[0041] In one embodiment, reference is made to Figure 4 , Figure 4 This is a functional module diagram of an embodiment of the flying ink droplet imaging control device of this application. Figure 4 As shown, the imaging control device for flying ink droplets includes: The acquisition module is configured to acquire encoder signals that control the movement of the printhead module / observation module, the relative position between the target nozzle on the printhead module and the observation station, and the ink ejection signal of the target nozzle continuously spraying ink at a set frequency. The position determination module is configured to determine, based on the relative position and the encoder signal for the next control of the nozzle module / observation module movement, whether the target nozzle will reach the observation position during the movement of the nozzle module / observation module controlled by the encoder signal. The shooting trigger module is configured to determine the next encoder signal as the first target signal if the observation station is reached; take the first spray signal of the target nozzle after the first target signal is triggered as the second target signal; and control the observation module to perform ink droplet observation when the second target signal is obtained.

[0042] The functions of the modules in the flying ink droplet photographing control device correspond to the steps in the flying ink droplet photographing control method, and the functions and implementation processes are not described here.

[0043] In a third aspect, the embodiments of the present application provide a flying ink droplet photographing control device. The flying ink droplet photographing control device can be a personal computer (PC), a notebook computer, a server, or other device with data processing function.

[0044] Reference Figure 5 , Figure 5 FIG. 1 is a schematic diagram of a hardware structure of a flying ink droplet photographing control device according to an embodiment of the present application. In the embodiment of the present application, the flying ink droplet photographing control device can include a processor, a memory, a communication interface, and a communication bus.

[0045] The communication bus can be of any type, and is used to interconnect the processor, the memory, and the communication interface.

[0046] The communication interface includes an input / output (I / O) interface, a physical interface, and a logical interface, which are used to interconnect devices inside the flying ink droplet photographing control device, and are also used to interconnect the flying ink droplet photographing control device with other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, a fiber interface, an ATM interface, etc. The user device can be a display (Display), a keyboard (Keyboard), etc.

[0047] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0048] The processor can be a general processor, which can invoke a flying ink droplet photographing control program stored in the memory and execute the flying ink droplet photographing control method provided in the embodiments of the present application. For example, the general processor can be a central processing unit (CPU). The method executed when the flying ink droplet photographing control program is invoked can refer to the embodiments of the flying ink droplet photographing control method of the present application, which will not be repeated here.

[0049] Those skilled in the art can understand that the hardware structure shown in the foregoing embodiments is not a limitation to the present application, and can include more or less components, or combine certain components, or different component arrangement. Figure 5 The hardware structure shown in the foregoing embodiments is not a limitation to the present application, and can include more or less components, or combine certain components, or different component arrangement.

[0050] In a fourth aspect, the embodiments of the present application further provide a storage medium.

[0051] The storage medium of the present application stores a flying ink droplet photographing control program, wherein the flying ink droplet photographing control program is executed by a processor to implement the steps of the flying ink droplet photographing control method as described above.

[0052] The method implemented when the flying ink droplet photographing control program is executed can refer to the embodiments of the flying ink droplet photographing control method of the present application, which will not be repeated here.

[0053] It should be noted that the serial numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0054] The terms "comprising" and "having" and any variations thereof in the specification and claims of the present application and the above-described drawings are intended to cover not exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device. The terms "first", "second" and "third" and the like descriptions are used to distinguish different objects, and do not represent the order or limit the types of "first", "second" and "third".

[0055] In the description of the embodiments of the present application, "exemplary", "for example" or "for instance" is used to mean as an example, illustration or description. Any embodiment or design scheme described as "exemplary", "for example" or "for instance" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words "exemplary", "for example" or "for instance" are used to present the relevant concept in a specific manner.

[0056] In the description of the embodiments of the present application, unless otherwise specified, " / " means the meaning of or, for example, A / B can mean A or B; the text "and / or" only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist together, and B exists alone, and in addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0057] In some of the processes described in the embodiments of the present application, a plurality of operations or steps are included in a specific order, but it should be understood that these operations or steps can be executed or in parallel without the order in which they appear in the embodiments of the present application, and the serial number of the operation is only used to distinguish different operations, and the serial number itself does not represent any execution order. In addition, these processes can include more or fewer operations, and these operations or steps can be executed in sequence or in parallel, and these operations or steps can be combined.

[0058] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and the necessary general hardware platform, of course, it can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, an optical disk) as described above, and includes a plurality of instructions for making a terminal device execute the method described in each embodiment of the present application.

[0059] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method of controlling the photographing of flying ink droplets, characterized by, The method is characterized in that the method comprises the following steps: acquiring an encoder signal for controlling movement of the nozzle module and the observation module, a relative position between a target nozzle on the nozzle module and the observation station, and a jetting signal for continuous ink jetting of the target nozzle at a set frequency; judging, according to the relative position and the next encoder signal for controlling movement of the nozzle module and the observation module, whether the target nozzle will reach the observation station in the next movement controlled by the next encoder signal; if the target nozzle will reach the observation station, determining the next encoder signal as a first target signal; triggering a second target signal by a first jetting signal of the target nozzle after triggering of the first target signal; controlling the observation module to perform a droplet observation action when the second target signal is acquired.

2. The flying ink droplet photographing control method according to claim 1, wherein In the step of triggering a second target signal by a first jetting signal of the target nozzle after triggering of the first target signal, the first jetting signal after a rising edge of triggering of the first target signal is taken as the second target signal. In the step of controlling the observation module to perform a droplet observation action when the second target signal is acquired, a rising edge of triggering of the second target signal is taken as a triggering condition for triggering the observation module to perform the droplet observation action.

3. The flying ink droplet photographing control method according to claim 1, wherein In the step of determining the next encoder signal as a first target signal if the target nozzle will reach the observation station, and acquiring a jetting signal for continuous ink jetting of the target nozzle at a set frequency, the set frequency is greater than a frequency of the encoder signal.

4. The flying ink droplet photographing control method according to claim 3, wherein The set frequency satisfies that a moving distance of the nozzle module in a time interval between two adjacent jetting signals does not exceed a maximum lateral deviation of a droplet allowed in a captured image of the observation module.

5. The flying ink droplet photographing control method according to claim 1, wherein The step of controlling the observation module to perform a droplet observation action when the second target signal is acquired comprises the following steps: controlling a strobe light source in the observation module to perform strobe light compensation at a first delay time after the second target signal is acquired, wherein the first delay time is determined according to a distance range of a captured droplet allowed in a vertical direction of a captured image of the observation module; controlling a camera in the observation module to perform exposure at a second delay time after the second target signal is acquired, wherein the second delay time is less than the first delay time.

6. The flying ink droplet photographing control method according to claim 5, wherein In the step of controlling the camera in the observation module to perform exposure at the second delay time after the second target signal is acquired, the strobe light source performs strobe light compensation once or interval strobe exposure multiple times in a single exposure process.

7. The flying ink droplet photographing control method according to claim 5, wherein The method further comprises the following steps after the step of determining the next encoder signal as a first target signal if the target nozzle will reach the observation station, and triggering a second target signal by a first jetting signal of the target nozzle after triggering of the first target signal: controlling the observation module to perform a droplet observation action at a set time length after the first target signal is acquired, wherein the set time length is less than the first delay time, and a difference between the set time length and the first delay time is greater than a minimum value of the first delay time.

8. A flying ink droplet photographing control device characterized by comprising: The device comprises: An acquisition module configured to acquire an encoder signal for controlling movement of the nozzle module / observation module, a relative position between a target nozzle on the nozzle module and the observation station, and a firing signal for the target nozzle to continuously fire ink at a set frequency; A position determination module configured to determine, according to the relative position and the next encoder signal for controlling movement of the nozzle module / observation module, whether the target nozzle will reach the observation station during movement controlled by the next encoder signal. A shooting trigger module configured to, if the target nozzle will reach the observation station, determine the next encoder signal as a first target signal, trigger a first firing signal of the target nozzle after the first target signal as a second target signal, and control the observation module to perform a droplet observation action when the second target signal is acquired.

9. A photographic control device for flying ink droplets, characterized by The shooting control device for the flying ink droplet comprises a processor, a memory, and a shooting control program for the flying ink droplet stored on the memory and executable by the processor, wherein the shooting control program for the flying ink droplet is executed by the processor to implement the steps of the shooting control method for the flying ink droplet according to any one of claims 1-7.

10. A storage medium, characterized by The storage medium stores a shooting control program for the flying ink droplet, wherein the shooting control program for the flying ink droplet is executed by the processor to implement the steps of the shooting control method for the flying ink droplet according to claims 1-7.

Images