CN109177172A

CN109177172A - A kind of print quality method of real-time of 3D printer

Info

Publication number: CN109177172A
Application number: CN201811278250.6A
Authority: CN
Inventors: 王长清; 杜泉成; 杨佳攀; 吕慧丽; 杨向宇; 王稼祥
Original assignee: Henan Normal University
Current assignee: Henan Normal University
Priority date: 2018-10-30
Filing date: 2018-10-30
Publication date: 2019-01-11

Abstract

A real-time monitoring method for printing quality of a 3D printer. A projector and an infrared camera are respectively provided above adjacent two sides inside the body, the image storage module is connected with the infrared camera, and a magnetic disk is used to store image information captured in real time. The image processing module is connected with the image storage module, and the phase information of the different images generated by the different depth regions of the photographed workpiece collected by the infrared camera is converted into depth information through the arithmetic unit, and then re-calculated. Construct a three-dimensional image; compare the processed image file with the printed analysis file to determine whether the error value exceeds the preset value. If it does not exceed the set value, the printer continues to print. If it exceeds the set value, process The device triggers the alarm to send out an alarm signal, and controls the pause button of the printer to make the printer pause. The invention reduces the workload, improves the work efficiency, and has universal applicability to various types of 3D printers.

Description

A kind of print quality method of real-time of 3D printer

Technical field

The present invention relates to 3D printing technique field, especially a kind of real-time monitoring side suitable for 3D printer print quality Method.

Background technique

3D printing is the science and technology of emerging development in recent years, also referred to as increases material manufacturing technology, is the layer-by-layer accumulation by material To realize the technology of manufacture.This technology manufacturing speed is fast, with short production cycle, high-efficient, is the important hair of advanced manufacturing technology Open up the most potential technology in forefront in direction and intelligence manufacture system.

Since 3D printing successively prints, processing component needs the long period, cannot solve in time if there is problem Print quality will be directly affected, thus needs to carry out real-time monitoring to the print quality of 3D printer.The patent No. There is following two in 201610862914.8 real-time monitoring devices proposed and monitoring method: first, real-time monitoring dress Print quality can be only monitored online by camera by setting, but cannot be carried out print quality on external equipment in real time Display is unfavorable for staff and understands real-time print quality；Second, it is molten that the monitoring device and monitoring method are only applicable to laser It is melted into the monitoring of shape class 3D printer print quality, is not particularly suited for the monitoring of other type 3D printer print qualities.Thus, Need a kind of method of real-time monitoring suitable for variety classes 3D printer print quality.

The present invention utilizes machine vision technique, obtains printer by structure light and is just believing in the realtime graphic of print member Breath can not only carry out stereoscopic display by display screen, and by by the resolution file of file and printing after image procossing Comparison, if the error amount of comparison is more than error setting value, proves that the component printed is deposited so that it is determined that whether printing is accurate In problem, printer then signal an alert and break-off, staff can handle asking of occurring in print procedure in time Topic, to reduce a possibility that printer leads to the problem of workpiece.

Summary of the invention

The purpose of the present invention is design a kind of 3D printing for the quality real-time monitoring that method is reasonable, can print to 3D printer The print quality method of real-time of machine.

The technical scheme is that a kind of print quality method of real-time of 3D printer, it is characterised in that: in 3D Adjacent two upper side of the internal body of printer is respectively equipped with the projector, infrared camera, and the projector is thrown using laser Emitter generates infrared structure light, and by infrared structure light projection on the workpiece printed, carries out image by infrared camera The relative position of acquisition, the projector and infrared camera is certain, and working condition is synchronous；Described image memory module with it is infrared Camera is connected, and the image information that captured in real-time arrives, described image processing module and image storage module are stored with disk It is connected, which is realized using dsp chip, and infrared camera is collected due to the different depth region for the workpiece that is taken The variation of structure is scaled depth information by arithmetic element, and then reconstructs three by the phase information of the different images of generation Tie up image；The stereoscopic display screen is connect with image processing module, which is column mirror grating liquid crystal display, completes image Stereoscopic display, the Lag synchronization processing module receives the sectioning image of 3D printer printing and the figure of infrared camera shooting Picture, due to shooting during be likely to occur and block, pass through Lag synchronization technology and realize file after mimeograph documents and image procossing Synchronization, improve the accuracy rate that file after mimeograph documents and image procossing compares；File after the mimeograph documents and image procossing Contrast module and image processing module are electrically connected, which uses arm processor, by treated image file and printing Resolution file compare, determine whether its error amount is more than preparatory setting value, if being not above setting value, printer continue into The driving of row next step prints, if being more than setting value, processor triggers alarm signal an alert, while controlling printer Pause key, so that printer pause is worked, until operator complete issue handling after, just progress next step printing.

Compared with the prior art, the invention has the following beneficial effects: monitoring method of the invention realizes and uses stereoscopic picture plane To the real-time display of work pieces process situation in printer, real-time, accurate information feedback is provided for printer operator, effectively The workload for reducing operator, improve the working efficiency of operator, monitored the work of each process in 3D printing Situation, the workpiece that India and China go wrong that can fight each other in time sound an alarm and printer pause are made to work, and make the matter for printing workpiece Effective guarantee has been measured, a possibility that problem workpiece generates is reduced, has had to various types 3D printer and is generally applicable in Property.

Detailed description of the invention

Fig. 1 is structural schematic diagram of the invention,

Fig. 2 is structural principle block diagram of the invention,

Fig. 3 is flow chart of the method for the present invention,

Drawing explanation: 101 be infrared camera, and 102 be printing machine bottom board, and 103 be electronic touch screen, and 104 be control panel, 105 be cabinet mask, and 106 be printer main body, and 107 be the projector.

Specific embodiment

Embodiment is described in detail in conjunction with the figures above,

Embodiment 1,

A kind of print quality method of real-time of 3D printer comprising 3D printer；106 bottom of 3D printer main body is equipped with Machine bottom board 102 is printed, the control panel 104 that the side of printer main body is equipped with electronic touch screen 103 and is electrically connected with it is being controlled The top of panel processed is equipped with cabinet mask 105, and the camera 101 and the projector 107 are fixed on above the inner wall of 3D printer Adjacent two sides, the projector use laser projecting apparatus, generate infrared structure light, and by infrared structure light projection to printing Workpiece on, Image Acquisition is carried out by infrared camera, the relative position of the projector and infrared camera is certain, and work shape State is synchronous.Described image memory module is connected with infrared camera, and the image information that captured in real-time arrives is stored with disk, institute It states image processing module to be connected with image storage module, which is realized using dsp chip, and infrared camera is collected The phase information of the different images generated by the different depth region for the workpiece that is taken, by arithmetic element by the variation of structure It is scaled depth information, and then reconstructs 3-D image.The stereoscopic display screen is connect with image processing module, the stereoscopic display Screen is column mirror grating liquid crystal display, completes the stereoscopic display of image, and the Lag synchronization processing module receives 3D printer printing The image of sectioning image and infrared camera shooting, due to shooting during be likely to occur and block, pass through Lag synchronization technology Realize synchronous, the accuracy rate that file compares after raising mimeograph documents and image procossing of mimeograph documents with file after image procossing. File contrast module and image processing module are electrically connected after the mimeograph documents and image procossing, which is handled using ARM The resolution file of treated image file and mimeograph documents is compared, determines whether its error amount is more than preparatory setting by device Value, if being not above setting value, printer continues the driving printing of next step, if being more than setting value, processor is touched Alarm signal an alert is sent out, while controlling the Pause key of printer, printer pause is made to work, until operator completes After issue handling, the printing of next step is just carried out.

The above embodiments are merely examples for clarifying the description, and does not limit the embodiments.For institute For the those of ordinary skill in category field, other various forms of variations or change can also be made on the basis of the above description It is dynamic.There is no necessity and possibility to exhaust all the enbodiments, and obvious variation extended from this or change It moves within still in the protection scope of the invention.

Claims

1. a real-time monitoring method for printing quality of a 3D printer, is characterized in that: a projector and an infrared camera are respectively provided on the adjacent two sides inside the body of the 3D printer, and the projector adopts a laser projector to produce an infrared structure. The infrared structured light is projected on the workpiece being printed, and the image is collected by the infrared camera. The relative position of the projector and the infrared camera is fixed, and the working status is synchronized; the image storage module is connected with the infrared camera, using Disk to store the image information captured in real time, the image processing module is connected with the image storage module, this module is realized by DSP chip, and the phase of the different images collected by the infrared camera due to the different depth areas of the workpiece being photographed is generated. The change of the structure is converted into depth information by the arithmetic unit, and then the three-dimensional image is reconstructed; the three-dimensional display screen is connected with the image processing module, and the three-dimensional display screen is a lenticular grating liquid crystal screen, which completes the three-dimensional display of the image, so The delay synchronization processing module receives the slice image printed by the 3D printer and the image captured by the infrared camera. Due to the possibility of occlusion during the shooting process, the synchronization of the print file and the image processed file is realized through the delay synchronization technology, and the print file and the image processed file are synchronized. The accuracy rate of file comparison; the printed file is electrically connected to the image-processed file comparison module and the image processing module, and the module uses an ARM processor to compare the processed image file with the printed analytical file to determine its error value Whether it exceeds the preset value, if it does not exceed the preset value, the printer will continue to drive the next step of printing, if it exceeds the preset value, the processor will trigger the alarm to send out an alarm signal, and at the same time control the pause button of the printer to make the printer Pause the work until the operator has completed the problem processing before proceeding to the next printing.