阅读说明：本技术 丝网印花制板投影系统 (Screen printing plate-making projection system ) 是由 陈德裕 许江华 邱德强 于 2021-07-07 设计创作，主要内容包括：本发明公开了一种丝网印花制板投影系统,包括智能手机、中间件、投影机；智能手机主要作为系统的显示输出和操作控制子系统；手机通过无线通信模块与中间件组网,然后操作控制系统的工作；中间件包括硬件和软件两个部分；其中硬件部分包括嵌入式处理器、存储器、WiFi模块、电源、HIDM接口、USB接口；软件部分包括网络连接、图像输入输出、图像边框提取、手绘图像边框、系统管理。本发明省去了传统方式下的洗板、在每一印花板上绘制布匹边框工序,提高了整个印花流程的效率。(The invention discloses a screen printing plate-making projection system, which comprises a smart phone, a middleware and a projector, wherein the smart phone is connected with the middleware; the smart phone is mainly used as a display output and operation control subsystem of the system; the mobile phone is networked with the middleware through the wireless communication module, and then the work of the control system is operated; the middleware comprises two parts of hardware and software; the hardware part comprises an embedded processor, a memory, a WiFi module, a power supply, an HIDM interface and a USB interface; the software part comprises network connection, image input and output, image frame extraction, hand-drawing image frame and system management. The invention omits the working procedures of washing boards and drawing cloth borders on each printing board in the traditional mode, and improves the efficiency of the whole printing process.)

1. The utility model provides a screen printing system board projection system which characterized by: the system comprises a smart phone, a middleware and a projector;

the smart phone is mainly used as a display output and operation control subsystem of the system; the mobile phone is networked with the middleware through the wireless communication module, and then the work of the control system is operated;

the middleware comprises two parts of hardware and software; the hardware part comprises an embedded processor, a memory, a WiFi module, a power supply, an HIDM interface and a USB interface; the software part comprises network connection, image input and output, image frame extraction, hand-drawn image frame and system management;

the work content comprises the following steps:

(1) and (3) photographing and recognizing the frame: shooting a bottom material pasted on a printing plate or a cloth frame drawn on the printing plate in a manual mode through a projection head of a smart phone, then handing the frame to a software part of a middleware for processing, extracting the frame, and then sending the frame image to a projector for projection and output to other printing plates for an operator to paste a reference position of the cloth to be printed;

(2) drawing a frame by hand: a middleware software part of the system provides a hand-drawn frame window based on OpenCV; an operator gives a start point coordinate and an end point coordinate through a display screen of the smart phone, selects the type of the hand-drawn frame, designs the frame of the printed piece, and sends the frame to a projector for projection and output to a printing plate; the system can save, modify, edit, and invoke the hand-drawn image.

2. The screen printing plate projection system of claim 1, wherein: the using method comprises the following steps:

(1) the method comprises the steps of opening a mobile phone, setting a wireless network of the mobile phone as a hot spot provided by the system, establishing connection between the mobile phone and the system through the JuiceSSH and IPtools at the mobile phone end, and enabling a software interface of the system to appear on a screen of the mobile phone;

(2) the system is operated by touching the mobile phone screen through fingers: and the corresponding screen printing plate making frame projection function of the system is completed by clicking corresponding operation buttons in the three modules of 'hand drawing frame', 'photographing and image recognizing' and 'system management'.

3. The screen printing plate projection system of claim 1, wherein: the method comprises the following operation steps: the first step is as follows: installing a system additionally: fixing a middleware on the projector, connecting a middleware power supply, connecting the middleware and a projector data line, and powering up the system; opening the smart phone, operating JuiceSSH or IPtools, and connecting the smart phone with the middleware through a hot spot; after the connection is successful, a main menu of system software can be seen on a mobile phone screen;

the second step is that: selecting an operation to be performed;

drawing a frame by hand: clicking 'hand-drawing frame' > 'in a main menu to start drawing', and then drawing a frame graph needing cloth pasting in a right working window in a finger touch mode; clicking 'hand-painted border' > 'to save the image' after finishing; the drawn frame image is transmitted to a projector for projection output by clicking 'hand-drawn frame' > 'output display';

and (3) photographing and recognizing the frame: clicking 'picture taking picture learning picture' > 'picture taking' in a main menu, opening a mobile phone camera, taking a picture of cloth stuck on a certain printing plate, and uploading; clicking 'picture taking and figure learning' - 'picture opening' in the main menu, and clicking 'picture taking and figure learning' - 'frame recognition' in the main menu; clicking 'picture taking and picture learning' > 'image storage' in a main menu, inputting a file name, clicking 'output display', and sending to a projector for projection and output to a plate making;

and (3) system management: clicking system management in a main menu, namely history query, and finishing the function of searching past frame images; clicking 'reuse', sending the past frame image to projection for projection output, and realizing the reuse of the frame of the image of the same variety of printed cloth; clicking to quit the system to finish the operation of the whole system.

Technical Field

The invention relates to a screen printing plate-making projection system.

Background

The traditional screen printing is to paste cloth to be printed on a printing plate in a manual mode, print patterns on the cloth through a screen, and form the cloth through procedures such as drying. The process of pasting the cloth on the printing plate is manually completed. The operation process is as follows: the original printing frame line drawn on the board is cleaned manually, and then a new frame line of the printed product is drawn on the board again for indicating the posting position of an operator. This procedure is time consuming (about ten minutes is required to wash out a plate), laborious, and directly restricts the improvement of printing efficiency.

Disclosure of Invention

The invention aims to provide a screen printing plate-making projection system which omits the plate washing in the traditional mode, draws cloth frames on each printing plate and improves the efficiency of the whole printing process.

The technical solution of the invention is as follows:

the utility model provides a screen printing system board projection system which characterized by: the system comprises a smart phone, a middleware and a projector;

the smart phone is mainly used as a display output and operation control subsystem of the system; the mobile phone is networked with the middleware through the wireless communication module, and then the work of the control system is operated;

the middleware comprises two parts of hardware and software; the hardware part comprises an embedded processor, a memory, a WiFi module, a power supply, an HIDM interface and a USB interface; the software part comprises network connection, image input and output, image frame extraction, hand-drawn image frame and system management;

the work content comprises the following steps:

(1) and (3) photographing and recognizing the frame: shooting a bottom material (cloth) pasted on a printing plate or a cloth frame drawn on the printing plate in a manual mode through a projection head of the smart phone, processing the frame by a software part of a middleware, extracting the frame, sending a frame image to a projector for projection and outputting the frame image to other printing plates so that an operator can paste a reference position of the cloth to be printed;

(2) drawing a frame by hand: a middleware software part of the system provides a hand-drawn frame window based on OpenCV; an operator gives a start point coordinate and an end point coordinate through a display screen of the smart phone, then selects the type of the manually drawn frame (including drawing a straight line, drawing a curve or manually drawing an arbitrary curve), designs the frame of the printed piece, and sends the frame to a projector for projection and output to a printing plate; the system can save, modify, edit, and invoke the hand-drawn image.

The using method comprises the following steps:

(1) the method comprises the steps of opening a mobile phone, setting a wireless network of the mobile phone as a hot spot provided by the system, establishing connection between the mobile phone and the system through the JuiceSSH and IPtools at the mobile phone end, and enabling a software interface of the system to appear on a screen of the mobile phone;

(2) the system is operated by touching the mobile phone screen through fingers: and the corresponding screen printing plate making frame projection function of the system is completed by clicking corresponding operation buttons in the three modules of 'hand drawing frame', 'photographing and image recognizing' and 'system management'.

The method comprises the following operation steps: the first step is as follows: installing a system additionally: fixing a middleware on the projector, connecting a middleware power supply, the middleware and a projector data line (a USB interface or an HDMI interface), and powering up a system; opening the smart phone, operating JuiceSSH or IPtools, and connecting the smart phone with the middleware through a hot spot; after the connection is successful, a main menu of system software can be seen on a mobile phone screen;

the second step is that: selecting an operation to be performed;

drawing a frame by hand: clicking 'hand-drawing frame' > 'in a main menu to start drawing', and then drawing a frame graph needing cloth pasting in a right working window in a finger touch mode; clicking 'hand-painted border' > 'to save the image' after finishing; the drawn frame image is transmitted to a projector for projection output by clicking 'hand-drawn frame' > 'output display';

and (3) photographing and recognizing the frame: clicking 'picture taking picture learning picture' > 'picture taking' in a main menu, opening a mobile phone camera, taking a picture of cloth stuck on a certain printing plate, and uploading; clicking 'picture taking and figure learning' - 'picture opening' in the main menu, and clicking 'picture taking and figure learning' - 'frame recognition' in the main menu; clicking 'picture taking and picture learning' > 'image storage' in a main menu, inputting a file name, clicking 'output display', and sending to a projector for projection and output to a plate making;

and (3) system management: clicking system management in a main menu, namely history query, and finishing the function of searching past frame images; clicking 'reuse', sending the past frame image to projection for projection output, and realizing the reuse of the frame of the image of the same variety of printed cloth; clicking to quit the system to finish the operation of the whole system.

The system of the invention has the following innovation points:

firstly, the processing work of screen printing plate frame images is completed through an embedded middleware system. The embedded middleware system has the function similar to a television set top box, and solves the problem that the traditional projector cannot realize the function of mobile phone screen projection. Meanwhile, the embedded middleware system in the invention is also an independent subsystem, can be transplanted to other application scenes, and has no dependence on a projector and a mobile phone.

And secondly, the working mode of manually washing and painting the border lines of the traditional screen printing plate making cloth pasting lines is improved into a mode of pasting the cloth by projecting the border lines. The improvement of the working mode not only improves the working efficiency and reduces the occupation of manpower resources, but also improves the production informatization level and the economic benefit.

Thirdly, the digital image processing technology, the embedded system technology, the wireless networking technology and the like are integrated into a whole and are firstly applied to the silk screen printing plate making industry.

Fourthly, the system is high in expandability. The system can be applied to the screen printing industry, and can be widely applied to the fields of school classroom multimedia teaching, vocational training, family entertainment and the like. Because the invention does not need to use special APP and WiFi wireless network, only needs common smart phones and traditional projectors, and can finish uploading documents such as PPT, images or photos and the like to the middleware by adding the middleware system of the invention and output the documents by the projectors. Compared with the existing intelligent screen projection technology, the method solves various limitations on the environment requirements of hardware and software in screen projection.

The purpose of the system is as follows:

(1) and screen printing plate making frame projection. By additionally arranging the projector and the system above the starting machine position of the automatic screen printing machine, cloth to be printed is pasted according to the frame position projected on the printing plate by the system for printing in the next procedure.

(2) And (5) multimedia teaching. The courseware for teaching is uploaded to the system through a mobile phone and then played; operating the system on a mobile phone to perform electronic writing and projection;

(3) screen is thrown in domestic projection of intelligence. The pictures shot by the mobile phone are uploaded to the system of the invention, and then enjoyed by a common household projector through projection.

(4) Merchant products and commodity advertisements. By the system, the advertisement information (text, image, PPT and the like) to be issued is projected to the background wall for advertisement propaganda.

Drawings

The invention is further illustrated by the following figures and examples.

Fig. 1 is a schematic system configuration diagram of an embodiment of the present invention.

Fig. 2 is a schematic diagram of a hand-drawn frame.

Fig. 3 and 4 are schematic diagrams of different opened states of the photos.

Fig. 5 is a diagram illustrating a recognition photo frame.

Detailed Description

A screen printing plate-making projection system comprises a smart phone, a middleware and a projector;

the smart phone is mainly used as a display output and operation control subsystem of the system; the mobile phone is networked with the middleware through the wireless communication module, and then the work of the control system is operated;

the middleware comprises two parts of hardware and software; the hardware part comprises an embedded processor, a memory, a WiFi module, a power supply, an HIDM interface and a USB interface; the software part comprises network connection, image input and output, image frame extraction, hand-drawn image frame and system management;

the work content comprises the following steps:

(1) and (3) photographing and recognizing the frame: shooting a bottom material (cloth) pasted on a printing plate or a cloth frame drawn on the printing plate in a manual mode through a projection head of the smart phone, processing the frame by a software part of a middleware, extracting the frame, sending a frame image to a projector for projection and outputting the frame image to other printing plates so that an operator can paste a reference position of the cloth to be printed;

(2) drawing a frame by hand: a middleware software part of the system provides a hand-drawn frame window based on OpenCV; an operator gives a start point coordinate and an end point coordinate through a display screen of the smart phone, then selects the type of the manually drawn frame (including drawing a straight line, drawing a curve or manually drawing an arbitrary curve), designs the frame of the printed piece, and sends the frame to a projector for projection and output to a printing plate; the system can save, modify, edit, and invoke the hand-drawn image.

The using method comprises the following steps:

(1) the method comprises the steps of opening a mobile phone, setting a wireless network of the mobile phone as a hot spot provided by the system, establishing connection between the mobile phone and the system through the JuiceSSH and IPtools at the mobile phone end, and enabling a software interface of the system to appear on a screen of the mobile phone;

(2) the system is operated by touching the mobile phone screen through fingers: and the corresponding screen printing plate making frame projection function of the system is completed by clicking corresponding operation buttons in the three modules of 'hand drawing frame', 'photographing and image recognizing' and 'system management'.

The method comprises the following operation steps: the first step is as follows: installing a system additionally: fixing a middleware on the projector, connecting a middleware power supply, the middleware and a projector data line (a USB interface or an HDMI interface), and powering up a system; opening the smart phone, operating JuiceSSH or IPtools, and connecting the smart phone with the middleware through a hot spot; after the connection is successful, a main menu of system software can be seen on a mobile phone screen;

the second step is that: selecting an operation to be performed;

drawing a frame by hand: clicking 'hand-drawing frame' > 'in a main menu to start drawing', and then drawing a frame graph needing cloth pasting in a right working window in a finger touch mode; clicking 'hand-painted border' > 'to save the image' after finishing; by clicking 'hand-drawn frame' > 'output display', the drawn frame image is transmitted to a projector for projection output (as shown in fig. 2);

and (3) photographing and recognizing the frame: clicking 'picture taking picture learning picture' > 'picture taking' in a main menu, opening a mobile phone camera, taking a picture of cloth stuck on a certain printing plate, and uploading; clicking the 'picture taking map' - 'picture opening' (as shown in fig. 3 and 4) in the main menu, and clicking the 'picture taking map' - 'recognition frame' (as shown in fig. 5) in the main menu; clicking 'picture taking and picture learning' > 'image storage' in a main menu, inputting a file name, clicking 'output display', and sending to a projector for projection and output to a plate making;

and (3) system management: clicking system management in a main menu, namely history query, and finishing the function of searching past frame images; clicking 'reuse', sending the past frame image to projection for projection output, and realizing the reuse of the frame of the image of the same variety of printed cloth; clicking to quit the system to finish the operation of the whole system.

According to the invention, the frame patterns needing cloth pasting are collected and designed by an operator through controlling the embedded system by the mobile phone, and then are projected onto the printing plates by the projector, so that the working procedures of plate washing and cloth frame drawing on each printing plate in the traditional mode are omitted, and the efficiency of the whole printing process is improved.

The invention completes screen printing plate-making projection work by operating and controlling the middleware system through the mobile phone and the embedded middleware system ad hoc local area network. On one hand, the collection of images on the template plates which are already pasted can be completed through a mobile phone camera, the image frame is extracted by a delivery system, and the processed image frame is delivered to a projector for projection and output for pasting cloth on the printing plates of the same printed products; on the other hand, the frame image of the printed cloth can be drawn by touch on the mobile phone in a manual operation mode, and then the frame image is sent to the projector for output, so that the printed cloth can be posted on the printed board. Meanwhile, the historical frame image can be called to be output and used again.

The screen printing plate-making projection system is mainly suitable for control of pasting printed cloth frames in the plate-making process of screen printing enterprises so as to improve the plate-making quality and the plate-making efficiency and remove the plate-washing process (in the traditional mode, the old frames on the printed plate need to be cleaned manually when the next product is printed, so that convenience is provided for drawing the frames of the next product). The key technology involved in the system is as follows:

(1) embedded system technology.

The traditional projector does not support the screen projecting function of the mobile phone, and even if the traditional projector supports the screen projecting of the mobile phone at present, the screen projecting function can be realized on the premise that the smart mobile phone and the projector are arranged below the same local area network. Therefore, on one hand, in order to meet the defects that the traditional projector does not support screen projection and the traditional most advanced projector supports screen projection but needs wireless network support, the invention makes up the defects by designing a middleware based on the embedded system technology; on the other hand, the cost, performance stability, system operability and other factors must be considered, and the advantages of the embedded system in the aspects of volume, price, function, operation and the like are utilized, so that a middleware system which is formed by additionally arranging a hardware plug-in on the traditional projector is designed. The middleware embedded system of the invention takes the Linux operating system as the embedded system software, develops the corresponding embedded application software by applying the Python programming language and realizes the functions of the whole system.

(2) An image processing technique.

The image processing technology is a core technology used by the system and mainly comprises the following steps: the first is to take the picture and acquire the frame. Through the camera of cell-phone end, gather the cloth image of having posted on a certain printing plate (if not using this system, need draw the frame that need put up cloth at each printing plate hand, need with the bottom plate sanitization after a seal printing finishes, draw the frame of next seal printing again. The software part of the system acquires the uploaded image, then the digital image is preprocessed through rotation, binarization, scaling transformation and the like, a frame of the digital image is extracted, the frame image extracted through secondary processing of the system is finally delivered to a projector for projection output, and the frame image is used for pasting printed cloth on other printing plates. Secondly, the image frame is drawn by hand on the mobile phone screen through the software of the system (the mobile phone screen is used as the input screen of the system middleware), and then the image frame is sent to the projector for output. The system adopts the OpenCV to carry out the image processing technology, and realizes the functions of drawing Windows, drawing grid lines, drawing straight lines, drawing curves, accessing images and drawing revocation (similar to drawing in Windows) of hand-drawn images.

(3) Provided is a wireless networking technology.

Considering that the projector is often hung directly over the printed circuit board (about 2000mm above the printed circuit board surface which is kept flat) which needs to be posted with cloth, the middleware is additionally arranged above the projector, and an operator cannot take pictures or draw frames by hands at high altitude, therefore, the system carries out wireless networking by using the mobile phone and the middleware and uses the mobile phone screen as an input screen of the middleware. A wireless local area network is established through the mobile phone hot spots SSH and IPTOOL and WiFi in the middleware, and the related operation and control of the system are completed through the mobile phone screen serving as an output display part of the middleware.

(4) Python programming technique.

The system middleware programming adopts the Linux + Python technology. Linux is a mainstream operating system of an embedded system and has the characteristics of convenience in cutting, complete functions, simplicity in operation and the like; the Python is selected as the development language of the system due to the characteristics of strong function, open source, cross-platform, object-oriented and strong interactivity. Meanwhile, the technology of image processing, UI design and the like of OpenCV, wxPyhton and the like is perfectly combined with the Pyhton programming, and the software development work of the system is completed.