CN204471880U - A kind of control system based on fusion sediment 3D printer - Google Patents
A kind of control system based on fusion sediment 3D printer Download PDFInfo
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- CN204471880U CN204471880U CN201520062779.XU CN201520062779U CN204471880U CN 204471880 U CN204471880 U CN 204471880U CN 201520062779 U CN201520062779 U CN 201520062779U CN 204471880 U CN204471880 U CN 204471880U
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Abstract
The utility model relates to the control field of printer, particularly relate to a kind of control system based on fusion sediment 3D printer, the serial ports arranged is the communicator of the full duplex asynchronous serial of RS232 of application PL2303, USB drive circuit pass-through mode selection circuit is selected serial communication pattern and is received PC signal, and is read and write operation the SD card in SD card circuit by the I/O signal collecting unit on LPC1769 master chip; The utility model is according to foregoing, in employing NXP company LPC17xx series, LPC1769 chip is as core component, realize the 3D printer control system with secondary development function, and export high-precision motion control, decrease components and parts number simultaneously, shorten volume, decrease the redevelopment of 3D printer, again upgrade cost.
Description
Technical field
The utility model relates to the control field of printer, particularly relates to a kind of control system based on fusion sediment 3D printer.
Background technology
Fused glass pellet technique (Fused Deposition Modeling is called for short FDM) is a kind of 3D printing technique grown up after LOM technique and SLA technique, this technology by Scott Crump in utility model in 1988, Scott Crump has founded Stratasys company 1992 subsequently, Stratasys company is proposed in the world that First is based on 3D printer-" 3D fashioner (the 3D Mod3ler) " of FDM technology, and this also indicates that FDM technology enters commercial stage.
At present, the control program of FDM type 3D printer is mainly applied 8 single-chip microcomputers and is controlled, as Pan Gu 3D printer on the market; Also have using PLC to control, as: desktop 3D printer kinetic control system (application number: 201320774590.4).In addition FDM control system one literary composition that Zhang Junwei in 2011 delivers based on ARM proposes modularized design, and Tan Xiu in 2014 rises the desktop type 3D printer control system delivered based on ARM and designs a literary composition expanded USB module and limit switch module on the basis of Zhang Junwei.
The control system of application 8 single-chip microcomputers, due to the limitation of chip, the speed of service is slow, and calculate inaccuracy, easily make mistakes during work, machining accuracy is not high.The control system of using PLC, expensive, bulky, and also noise is large.The control system about ARM that Zhang Junwei and Tan Xiuteng delivers, due to the limitation of circuit design, cannot realize the upgrading of control system secondary and optimize, cannot realize SD card and share.Above-mentioned 3D printer control circuit is disposable burning control program, after discovery leak, cannot upgrade in time, can only welding circuit and chip again, so just wastes the plenty of time and improves development cost; In addition, when using SD card, need to extract from control system, insert copied files in computer, again insert the content that control system could read SD card.
Utility model content
The purpose of this utility model is to propose a kind of LPC1769 chip that adopts as core component, realizes the control system with the 3D printer of secondary development function.
For reaching this object, the utility model by the following technical solutions:
Based on a control system for fusion sediment 3D printer, comprise main control module, mode switch module, expansion link module, memory module, signal output module, system clock module, power module, house dog and reseting module, driver module, real time execution module, motor speed measuring module, position detection module and temperature control module;
Described main control module comprises LPC1769 main control chip, its with described mode switch module, memory module, signal output module, system clock module, power module, house dog and reseting module, driver module be connected with real time execution module;
Described mode switch module and described memory module are used for signal input, and it is connected with described expansion link module, with under switch acting in conjunction for switching the communication mode of PC and described main control module;
Described expansion link module comprises serial ports and USB interface, its communication be connected for described PC and main control module with described PC;
Described real time execution module is connected with temperature control module with described driver module, motor speed measuring module, position detection module respectively, for monitoring the ruuning situation of each parts in real time and feeding back to main control module, and receive the control signal of described main control module, regulate the running of described driver module, motor speed measuring module, position detection module and temperature control module;
Described driver module connects and drive motors.
Described serial ports is the RS232 full duplex asynchronous serial communication device of application PL2303.
Described USB drive circuit pass-through mode selection circuit is selected serial communication pattern and is received PC signal, make described LPC1769 main control chip and described PC realize synchronous communication, and read and write operation by the carrying out of the I/O signal collecting unit on described LPC1769 master chip to the SD card in SD card circuit.
Described motor has four, is stepper motor, and the drive circuit of described motor is the stepper motor driving circuit of application A4982.
Described switch comprises mechanical switch and level switch, and described mechanical switch is limit switch circuit, and described level switch is pulse selector.
The utility model is according to foregoing, in employing NXP company LPC17xx series, LPC1769 chip is as core component, realize the 3D printer control system with secondary development function, and export high-precision motion control, decrease components and parts number simultaneously, shorten volume, decrease the redevelopment of 3D printer, again upgrade cost.
Accompanying drawing explanation
Fig. 1 is the system block diagram of an embodiment of the present utility model;
Fig. 2 is the schematic block circuit diagram of an embodiment of the present utility model;
Fig. 3 is the schematic diagram of LPC1769 main controller USB and RS232 selection circuit in an embodiment of the present utility model;
Fig. 4 is the schematic diagram of SD card drive circuit in an embodiment of the present utility model;
Fig. 5 is the schematic diagram of stepper motor driving circuit in an embodiment of the present utility model;
Fig. 6 is the schematic diagram of pulse selector circuit in an embodiment of the present utility model;
Fig. 7 is the schematic diagram of limit switch circuit in an embodiment of the present utility model.
Detailed description of the invention
The technical solution of the utility model is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
As shown in Figure 1, based on a control system for fusion sediment 3D printer, comprise main control module, mode switch module, expansion link module, memory module, signal output module, system clock module, power module, house dog and reseting module, driver module, real time execution module, motor speed measuring module, position detection module and temperature control module;
Described main control module comprises LPC1769 main control chip, its with described mode switch module, memory module, signal output module, system clock module, power module, house dog and reseting module, driver module be connected with real time execution module;
Described mode switch module and described memory module are used for signal input, and it is connected with described expansion link module, with under switch acting in conjunction for switching the communication mode of PC and described main control module;
Described expansion link module comprises serial ports and USB interface, its communication be connected for PC and main control module with described PC;
Described real time execution module is connected with temperature control module with described driver module, motor speed measuring module, position detection module respectively, for monitoring the ruuning situation of each parts in real time and feeding back to main control module, and receive the control signal of described main control module, the running of adjustment driver module, motor speed measuring module, position detection module and temperature control module;
Described driver module connects and drive motors.
Described serial ports is the RS232 full duplex asynchronous serial communication device of application PL2303 as illustrated in figs. 2-7.
Described system applies USB and RS132 selection circuit, USB drive circuit, SD card circuit, limit switch circuit and application MCP44X1 selection circuit.
USB drive circuit pass-through mode selection circuit is selected serial communication pattern and is received PC signal as described in Figure, make described LPC1769 main control chip and described PC realize synchronous communication, and read and write operation by the carrying out of the I/O signal collecting unit on described LPC1769 master chip to the SD card in SD card circuit.
Described motor has four, is stepper motor, and the drive circuit of described motor is the stepper motor driving circuit of application A4982.
Described switch comprises mechanical switch and level switch, and described mechanical switch is limit switch circuit, and described level switch is pulse selector.
Progress illustrates, as illustrated in figs. 2-7, a kind of circuit composition of the control system based on fusion sediment 3D printer, comprises LPC1769 main controller, RS232 full duplex asynchronous serial communication device, SD card drive circuit, pulse selector, stepper motor driving circuit, USB drive circuit, travel switch sensor circuit, temperature-control circuit; LPC1769 main controller comprises clock generation unit 1, RS232 communication unit 1, I/O signal collecting unit, logic control element, PWM unit, memory cell waveform generating unit; RS232 full duplex asynchronous serial communication device comprises PL2303 driver element, clock generation unit, way selection circuit, signal receiving unit; SD card drive circuit comprises capacitance-resistance filter; Stepper motor driving circuit 5 comprises capacitance-resistance filter, step motor control logic circuit, reception of impulse and transmitting element;
This example is received pc port input by the I/O signal collecting unit on LPC1769 main controller or is passed through card drive circuit and receives SD input, and waveform generating unit and logic control element produce the synchronous sine wave, cosine wave and the positive inverted logic Control timing sequence that segment; The Kai Heguan of the high-frequency signal control impuls selector that clock generation unit produces; The high-frequency impulse that pulse selector sends rotates and reverse through stepper motor driving circuit control step motor.
The signal receiving unit pass-through mode selection circuit of RS232 full duplex asynchronous serial communication device selects burning pattern to use USB drive circuit to receive PC signal, and be saved in memory cell, this process is called burning, secondary burning we be called and optimize or upgrading.
SD card drive circuit keeps stable by capacitance-resistance filter, the signal that the I/O signal collecting unit of corresponding LPC1769 main controller sends, and carries out reading and the write operation of SD card.
The high-frequency signal that pulse selector receive clock generating unit produces, as gauge tap signal, being that then unbalanced pulse exports when receiving high level, then closing pulse and exporting during low level.
Stepper motor driving circuit receives the control signal from pulse selector, corresponding control step motor (x-axis), stepper motor (y-axis), stepper motor (z-axis), stepper motor (shower nozzle)
Opening and closing.Step motor control logic circuit selects segmentation stepping-in amount by the collocation of (00,10,01,11).
USB drive circuit pass-through mode selection circuit selects serial communication pattern to receive PC signal, make LPC1769 main controller and PC realize synchronous communication, by the I/O signal collecting unit on LPC1769 main controller, SD card drive circuit is carried out to reading and the write operation of SD card.
Travel switch sensor circuit is as the feedback circuit of stepper motor driving circuit, when travel switch sensor circuit is high level, illustrate that stepper motor goes to extreme position, LPC1769 main controller is fed back to by I/O signal collecting unit, the clock generation unit of LPC1769 main controller sends high level to pulse selector, realizes the closedown of stepper motor.
Temperature-control circuit, by gathering stepper motor (shower nozzle) temperature, and the temperature of processing platform hotbed, Real-time Feedback, in LPC1769 main controller, is made temperature by I/O signal collecting unit and is regulated, when temperature is too high, then suspend heating, then connect heater switch when the temperature is too low.
When the present embodiment is in process engineering; PC is undertaken suspending or stopping process operation by the signal receiving unit of RS232 full duplex asynchronous serial communication device; during time-out; the parameter of automatic operation; comprising the parameter such as number of steps, machining locus is kept in EEPROM; can not lose, can revise in time in the situation of undergoing mutation like this, not need to increase extra equipment.
The control method of the control system of above-mentioned fusion sediment 3D printer comprises following job step:
1) select burning pattern by the signal receiving unit pass-through mode selection circuit of RS232 full duplex asynchronous serial communication device, use USB drive circuit receive the control system code from PC and be saved in memory cell, so far complete burning work;
2) pass-through mode selection circuit selects serial communication pattern to receive PC signal, makes described LPC1769 main control module and described PC realize synchronous communication, on described PC, now show the content of SD card the inside;
3) described PC sends stepper motor move under communication mode, signal generating unit exports high frequency clock, control the switch of described pulse selector, described stepper motor driving circuit is by the control of pulse selector, select corresponding stepper motor, and under the control of the control logic circuit of stepper motor, enable described stepper motor, and segmentation stepping-in amount is selected to carry out main story and return motion.
The LPC1769 chip that the utility model application is more advanced, devise optimum USB shares circuit, i.e. selection circuit as herein described, make UART and dataphone shared port, such utility model is conducive to control system when not revising the situation of circuit system and not needing to realize secondary development, optimization and upgrading when reprocessing, can save plenty of time and development cost.
During tradition use SD card, need to extract from control system, insert copied files in computer, again insert the content that control system could read SD card.The utility model can realize SD card and share, and namely selects serial communication pattern to receive PC signal by selection circuit, directly can show SD card content on PC, and can carry out read-write operation to SD card.Only need computer USB connection control system, namely may have access to SD card and carry out read-write operation, without the need to extracting, the convenience of operation can be improved.
Below know-why of the present utility model is described in conjunction with specific embodiments.These describe just in order to explain principle of the present utility model, and can not be interpreted as the restriction to the utility model protection domain by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other detailed description of the invention of the present utility model, and these modes all will fall within protection domain of the present utility model.
Claims (5)
1. the control system based on fusion sediment 3D printer, it is characterized in that, comprise main control module, mode switch module, expansion link module, memory module, signal output module, system clock module, power module, house dog and reseting module, driver module, real time execution module, motor speed measuring module, position detection module and temperature control module;
Described main control module comprises LPC1769 main control chip, its with described mode switch module, memory module, signal output module, system clock module, power module, house dog and reseting module, driver module be connected with real time execution module;
Described mode switch module and described memory module are used for signal input, and it is connected with described expansion link module, with under switch acting in conjunction for switching the communication mode of PC and described main control module;
Described expansion link module comprises serial ports and USB interface, its communication be connected for described PC and main control module with described PC;
Described real time execution module is connected with temperature control module with described driver module, motor speed measuring module, position detection module respectively, for monitoring the ruuning situation of each parts in real time and feeding back to main control module, and receive the control signal of described main control module, regulate the running of described driver module, motor speed measuring module, position detection module and temperature control module;
Described driver module connects and drive motors.
2. a kind of control system based on fusion sediment 3D printer according to claim 1, is characterized in that, described serial ports is the RS232 full duplex asynchronous serial communication device of application PL2303.
3. a kind of control system based on fusion sediment 3D printer according to claim 1, it is characterized in that, described USB drive circuit pass-through mode selection circuit is selected serial communication pattern and is received PC signal, make described LPC1769 main control chip and described PC realize synchronous communication, and read and write operation by the carrying out of the I/O signal collecting unit on described LPC1769 master chip to the SD card in SD card circuit.
4. a kind of control system based on fusion sediment 3D printer according to claim 1, it is characterized in that, described motor has four, is stepper motor, and the drive circuit of described motor is the stepper motor driving circuit of application A4982.
5. a kind of control system based on fusion sediment 3D printer according to claim 1, it is characterized in that, described switch comprises mechanical switch and level switch, and described mechanical switch is limit switch circuit, and described level switch is pulse selector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520062779.XU CN204471880U (en) | 2015-01-29 | 2015-01-29 | A kind of control system based on fusion sediment 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520062779.XU CN204471880U (en) | 2015-01-29 | 2015-01-29 | A kind of control system based on fusion sediment 3D printer |
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| CN204471880U true CN204471880U (en) | 2015-07-15 |
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| CN201520062779.XU Withdrawn - After Issue CN204471880U (en) | 2015-01-29 | 2015-01-29 | A kind of control system based on fusion sediment 3D printer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104608383A (en) * | 2015-01-29 | 2015-05-13 | 广东工业大学 | Control system based on fused deposition 3D printer and control method thereof |
| CN114523133A (en) * | 2022-04-23 | 2022-05-24 | 达州市卡雷亚数控机床有限公司 | Numerical control machine tool and control device thereof |
-
2015
- 2015-01-29 CN CN201520062779.XU patent/CN204471880U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104608383A (en) * | 2015-01-29 | 2015-05-13 | 广东工业大学 | Control system based on fused deposition 3D printer and control method thereof |
| CN114523133A (en) * | 2022-04-23 | 2022-05-24 | 达州市卡雷亚数控机床有限公司 | Numerical control machine tool and control device thereof |
| CN114523133B (en) * | 2022-04-23 | 2022-07-12 | 达州市卡雷亚数控机床有限公司 | Numerical control machine tool and control device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150715 Effective date of abandoning: 20170908 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150715 Effective date of abandoning: 20170915 |