CN202372834U - Embedded numerical control system with dual-core central processing unit (CPU) - Google Patents
Embedded numerical control system with dual-core central processing unit (CPU) Download PDFInfo
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- CN202372834U CN202372834U CN2011205087925U CN201120508792U CN202372834U CN 202372834 U CN202372834 U CN 202372834U CN 2011205087925 U CN2011205087925 U CN 2011205087925U CN 201120508792 U CN201120508792 U CN 201120508792U CN 202372834 U CN202372834 U CN 202372834U
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Abstract
The utility model relates to an embedded numerical control system with a dual-core central processing unit (CPU), which comprises an asynchronous response mode (ARM) embedded micro control core, a digital signal processor (DSP) core, a shared memory and an ethernet for control automation technology (EtherCAT) interface access, wherein the shared memory is used for connecting the ARM embedded micro control core and the DSP core. The embedded numerical control system with the dual-core CPU is characterized in that the ARM embedded micro control core is linked with a display unit and peripheral circuits and is linked with an upper computer through the EtherCAT interface access; and the DSP core is linked with a servo driver through the EtherCAT interface access. The embedded numerical control system with the dual-core CPU is capable of improving the real-time and the reliability and reducing volume and cost of the system.
Description
Technical field
The utility model relates to the numerical control device technical field, particularly relates to the built-in digital control system of a kind of double-core CPU.
Background technology
At present, the structure of existing CNC (Computer numerical control, computer numerical control (CNC) lathe) digital control system mainly is divided into two kinds.Fig. 1 is the structural representation of first kind of existing digital control system; As shown in Figure 1; This digital control system comprises a CPU, display circuit and control signal output unit, and a said CPU realizes that simultaneously interpolation operation and image show in real time, and the real-time that causes interpolation operation and image to show is relatively poor.Fig. 2 is the structural representation of second kind of existing digital control system; As shown in Figure 2; This CNC master control borad comprises CPU and control signal output unit, and it is a sports cards of carrying out interpolation operation, function singleness; Therefore it must cause adopting the system architecture of this digital control system complicated through connection of intelligent image display workstation to realize that image shows in real time.
Summary of the invention
The utility model technical matters to be solved provides the built-in digital control system of a kind of double-core CPU, improves real-time and reliability, reduces system bulk and cost.
The utility model solves the technical scheme that its technical matters adopted: the built-in digital control system that a kind of double-core CPU is provided; Comprise embedded microcontroller nuclear of ARM and DSP digital signal processing nuclear; And the shared drive and the EtherCAT network interface that connect embedded microcontroller nuclear of ARM and DSP digital signal processing nuclear; The embedded microcontroller nuclear of said ARM links to each other with peripheral circuit with display unit, and links to each other with host computer through the EtherCAT network interface; Said DSP digital signal processing nuclear is through linking to each other with servo-driver through the EtherCAT network interface.
Said double-core CPU is the TMS320DM8148 chip of Texas Instruments company.
Said peripheral circuit comprises power interface circuit, usb circuit, serial interface circuit, display interface circuit, keyboard interface circuit, storage interface circuit and indication interface circuit.
Beneficial effect
Owing to adopted above-mentioned technical scheme; The utility model compared with prior art; Have following advantage and good effect: the built-in digital control system of the utility model double-core CPU is through being provided with two CPU; Man-machine interface and interpolation algorithm are given two CPU execution, and pass through the computing of two CPU of inner high speed RAM synchronous coordination, thereby realized realizing simultaneously that with preferable real-time interpolation operation and image show.In display apparatus side, on colour liquid crystal display device, job sequence is intended by dynamic mode, can the cutter path that add man-hour be carried out dynamic image and show, and is intuitively true to nature, when greatly satisfying processing request, guaranteed the speed and the precision of workpiece processing.Owing to adopt above technical scheme, improved real-time, reliability and the reusability of system.
Description of drawings
Fig. 1 is the structural representation of first kind of existing digital control system;
Fig. 2 is the structural representation of second kind of existing digital control system;
Fig. 3 is the structural representation of the utility model embodiment.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction the utility model scope.Should be understood that in addition those skilled in the art can do various changes or modification to the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
The embodiment of the utility model relates to the built-in digital control system of a kind of double-core CPU; As shown in Figure 1; Comprise embedded microcontroller nuclear of ARM and DSP digital signal processing nuclear; And the shared drive and the EtherCAT network interface that connect embedded microcontroller nuclear of ARM and DSP digital signal processing nuclear, the embedded microcontroller nuclear of said ARM links to each other with peripheral circuit with display unit, and links to each other with host computer through the EtherCAT network interface; Said DSP digital signal processing nuclear is through linking to each other with servo-driver through the EtherCAT network interface.Said peripheral circuit comprises power interface circuit, usb circuit, serial interface circuit, display interface circuit, keyboard interface circuit, storage interface circuit and indication interface circuit; Said double-core CPU is the TMS320DM8148 chip of Texas Instruments company.
The embedded microcontroller nuclear of ARM Cortex-A8 in the said double-core CPU built-in digital control system adopts Harvard structure, is used to realize man-machine interface, system management interface, emulation demonstration and G code compilation facility; DSP digital signal processing in the said double-core CPU built-in digital control system is examined, and is used to realize the interpolation algorithm of high-speed real-time.
Described double-core CPU built-in digital control system; Wherein, G code parsing module in the embedded microcontroller nuclear of said ARM Cortex-A8; Be used for after the user imports G code, become digital control system can control the instruction of each motor code translation, comprise G instruction, M instruction, S instruction, F instruction and T instruction.Described double-core CPU built-in digital control system; Wherein, Emulation module in the embedded microcontroller nuclear of said ARM Cortex-A8; Be used for the user behind complete machining code of input, after resolving through the completion of G code parsing module, the whole machining process process passed through 3D demonstration whole machining process process true to nature in kind.Described double-core CPU built-in digital control system, wherein, the interpolation algorithm in the said DSP digital signal processing nuclear, first machining profile with processing object is divided into some straight-line segments according to sampled-data interpolation algorithm and carries out rough interpolation; Mini line segment to rough interpolation output carries out smart interpolation again.Described double-core CPU built-in digital control system; Wherein, the EtherCAT network interface in the said DSP digital signal processing nuclear, the interpolation algorithm of DSP digital signal processing nuclear operation; Operation result mails to all servo-drivers through the EtherCAT network interface, and its real-time and reliability are generally acknowledged.
The built-in digital control system of the utility model double-core CPU adopts the embedded microcontroller nuclear of the ARM Cortex-A8 of the Harvard structure among the double-core CPU as the man-machine interface master controller, adopts DSP digital signal processing nuclear as interpolate controller.In ARM Cortex-A8 master controller, transplanted embedded OS Embedded Windows CE5.0, load OpenGL2.0 and show that to provide abundant 3D processing parts dynamically shows; The core processing module of digital control system comprises soft PLC unit, I/O control module, position control unit, G code resolution unit and cutter and gap compensating unit etc., and the form with API in ARMCortex-A8 microcontroller nuclear provides; Digital control processing application program mode with graphic interface in ARM Cortex-A8 of developing according to various processing needs of the superiors provides to the user.So, in DSP digital signal processing nuclear, carry out interpolation operation, improved the real-time and the accuracy of digital control processing greatly.It is not necessary adopting above-mentioned double-core CPU, can adopt the double-core CPU of other identical functions and arithmetic capability yet.
The interpolate controller of said double-core CPU built-in digital control system adopts DSP digital signal processing nuclear, has realized the interpolation algorithm of high-speed real-time.Two-stage interpolation scheme is adopted in system's interpolation, and first machining profile with processing object is divided into some to line segment according to sampled-data interpolation algorithm, to carry out rough interpolation; Mini line segment to rough interpolation output carries out smart interpolation again.
The hardware configuration of the utility model double-core CPU built-in digital control system is as shown in Figure 3, has wherein comprised the embedded microcontroller nuclear of ARM Cortex-A8, DSP digital signal processing nuclear among the double-core CPU and has been connected the shared drive that the embedded microcontroller of ARM is examined and the DSP digital signal processing is examined.In the embedded microcontroller nuclear of ARM Cortex-A8, G code parsing module, soft PLC nuclear, Embedded Windows CE5.0 operating system, storage module and various peripheral interface module have been comprised.The embedded microcontroller nuclear of ARMCortex-A8 mainly is to realize man-machine interface, accomplishes input, precompile, track calculating, speed calculation, the analog simulation of processing parts figure and the tasks such as dynamic demonstration of process part of job sequence.In the embedded microcontroller nuclear of ARM Cortex-A8, read in part program through man-machine interface, through precompile.After track calculating and the speed calculation; Generation is used for the data of interpolation; And issue the DSP digital signal processing through inner RAM Shared and examine; Accomplish interpolation operation by DSP digital signal processing nuclear, and the interpolation operation result is issued all servo-drivers through the EtherCAT network interface, make numerically-controlled machine carry out working motion.
The embedded microcontroller nuclear of ARM Cortex-A8 in the utility model can also be authorized out various manual intervention information to the DSP digital signal processing, changes the motion state of numerically-controlled machine.And the strict task of real-time, like position limit signal and the processing of returning zero-signal, and some system's safety in operation inspections etc., then directly carry out at DSP digital signal processing nuclear.The embedded microcontroller nuclear of ARM Cortex-A8 receives only the information after handling, and it is shown, thus the safe operation of the system of assurance.
The built-in digital control system of the utility model double-core CPU is through being provided with two CPU; Man-machine interface and interpolation algorithm are given two CPU execution; And the computing through two CPU of inner high speed RAM synchronous coordination, thereby realized realizing interpolation operation and image demonstration simultaneously with preferable real-time.In display apparatus side, on colour liquid crystal display device, job sequence is intended by dynamic mode, can the cutter path that add man-hour be carried out dynamic image and show, and is intuitively true to nature, when greatly satisfying processing request, guaranteed the speed and the precision of workpiece processing.Owing to adopt above technical scheme, improved real-time, reliability and the reusability of system.
Claims (3)
1. the built-in digital control system of a double-core CPU; Comprise embedded microcontroller nuclear of ARM and DSP digital signal processing nuclear; And the shared drive and the EtherCAT network interface that connect embedded microcontroller nuclear of ARM and DSP digital signal processing nuclear; It is characterized in that the embedded microcontroller nuclear of said ARM links to each other with peripheral circuit with display unit, and link to each other with host computer through the EtherCAT network interface; Said DSP digital signal processing nuclear is through linking to each other with servo-driver through the EtherCAT network interface.
2. the built-in digital control system of double-core CPU according to claim 1 is characterized in that, said double-core CPU is the TMS320DM8148 chip of Texas Instruments company.
3. the built-in digital control system of double-core CPU according to claim 1; It is characterized in that said peripheral circuit comprises power interface circuit, usb circuit, serial interface circuit, display interface circuit, keyboard interface circuit, storage interface circuit and indication interface circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011205087925U CN202372834U (en) | 2011-12-08 | 2011-12-08 | Embedded numerical control system with dual-core central processing unit (CPU) |
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| CN2011205087925U CN202372834U (en) | 2011-12-08 | 2011-12-08 | Embedded numerical control system with dual-core central processing unit (CPU) |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103369207A (en) * | 2013-06-30 | 2013-10-23 | 浙江元亨通信技术股份有限公司 | Multi-nuclear DSP (Digital Signal Processor) video enhancer |
| CN103926882A (en) * | 2014-04-04 | 2014-07-16 | 张万军 | Numerical control interpolation system with PC+DSP timing and interruption |
| CN103926880A (en) * | 2014-04-04 | 2014-07-16 | 张万军 | High-frequency and high-precision interpolation processing numerical control system |
| CN104552311A (en) * | 2014-12-05 | 2015-04-29 | 杭州新松机器人自动化有限公司 | EtherCAT-based intelligent industrial robot bus module and operating method thereof |
| CN104777784A (en) * | 2015-02-11 | 2015-07-15 | 北京配天技术有限公司 | Numerical control system for numerical control machine |
| CN105680735A (en) * | 2016-02-03 | 2016-06-15 | 中国科学院自动化研究所 | ARM processor-based four-axis servo motor motion control card and method |
| CN105824770A (en) * | 2015-01-09 | 2016-08-03 | 北京航空航天大学 | Transmission method for control information of Ethernet control automation technology (Ether CAT) equipment and adapter |
| CN107037783A (en) * | 2016-11-09 | 2017-08-11 | 湖南戈人自动化科技有限公司 | A kind of method that man-machine interface realizes advanced figure function |
| CN108663993A (en) * | 2018-06-14 | 2018-10-16 | 商飞信息科技（上海）有限公司 | A kind of multiple-axis servo control system based on real-time controller |
| CN109032024A (en) * | 2018-08-08 | 2018-12-18 | 广州市捍御者信息科技有限公司 | Control platform |
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2011
- 2011-12-08 CN CN2011205087925U patent/CN202372834U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103369207A (en) * | 2013-06-30 | 2013-10-23 | 浙江元亨通信技术股份有限公司 | Multi-nuclear DSP (Digital Signal Processor) video enhancer |
| CN103926882A (en) * | 2014-04-04 | 2014-07-16 | 张万军 | Numerical control interpolation system with PC+DSP timing and interruption |
| CN103926880A (en) * | 2014-04-04 | 2014-07-16 | 张万军 | High-frequency and high-precision interpolation processing numerical control system |
| CN104552311A (en) * | 2014-12-05 | 2015-04-29 | 杭州新松机器人自动化有限公司 | EtherCAT-based intelligent industrial robot bus module and operating method thereof |
| CN105824770A (en) * | 2015-01-09 | 2016-08-03 | 北京航空航天大学 | Transmission method for control information of Ethernet control automation technology (Ether CAT) equipment and adapter |
| CN105824770B (en) * | 2015-01-09 | 2019-08-06 | 北京航空航天大学 | Ethernet auto-control technical equipment controls information transferring method and adapter |
| CN104777784A (en) * | 2015-02-11 | 2015-07-15 | 北京配天技术有限公司 | Numerical control system for numerical control machine |
| WO2016127782A1 (en) * | 2015-02-11 | 2016-08-18 | 深圳配天智能技术研究院有限公司 | Numerical control system and numerical control machine tool |
| CN105680735A (en) * | 2016-02-03 | 2016-06-15 | 中国科学院自动化研究所 | ARM processor-based four-axis servo motor motion control card and method |
| CN105680735B (en) * | 2016-02-03 | 2018-05-18 | 中国科学院自动化研究所 | Four axis servomotor motion control cards and method based on arm processor |
| CN107037783A (en) * | 2016-11-09 | 2017-08-11 | 湖南戈人自动化科技有限公司 | A kind of method that man-machine interface realizes advanced figure function |
| CN108663993A (en) * | 2018-06-14 | 2018-10-16 | 商飞信息科技（上海）有限公司 | A kind of multiple-axis servo control system based on real-time controller |
| CN109032024A (en) * | 2018-08-08 | 2018-12-18 | 广州市捍御者信息科技有限公司 | Control platform |
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