CN103427977B - A kind of single channel analog signal of utilizing realizes the method that many device synchronization gather - Google Patents
A kind of single channel analog signal of utilizing realizes the method that many device synchronization gather Download PDFInfo
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Abstract
The invention belongs to the synchronous acquisition technology in thermometrically technical field, be specifically related to a kind of single channel analog signal of utilizing and realize the method that many device synchronization gather. Concrete methods of realizing is: the analog mixed-signal that main equipment produces is sent to the respectively analog acquisition passage from equipment and main equipment simultaneously, each equipment carries out analog acquisition, the extraction of local reference clock and triggering signal to this analog mixed-signal respectively and extracts, thereby obtain local reference clock and triggering signal, then the sampling clock using local reference clock as each equipment, collection using triggering signal as each equipment starts control signal, can realize the synchronous acquisition of many equipment. The method form is simple, than traditional two ways of digital signals with footwork more economically, convenient, reliable, there is good practicality, simultaneously the method also can be applied to the various application that need to transmit at equipment room multiple signals.
Description
Technical field
The invention belongs to the synchronous acquisition technology in thermometrically technical field, be specifically related to a kind of single channel analog signal of utilizing and realize the method that many device synchronization gather.
Background technology
In industrial measurement and control application, due to reasons such as test point is more, test point dispersions, often need to adopt multiple equipment to complete on-the-spot collection and monitoring; Meanwhile, due to the specific demand of application, such as, the vibration noise monitoring system of heavy mechanical equipment, must carry out synchronous acquisition to the measuring point of these dispersions, could carry out complete, analysis accurately to the integrality of equipment. The synchronous acquisition here, not only requires all TCH test channels to start to gather at synchronization, and requires all passages to share a clock signal.
Traditional many device synchronization need to be shared triggering signal and two data signals of reference clock between equipment, then gather respectively and process two data signals and realize. Due to needs equipment room adopt two independently signal link transmit, therefore there is the phase delay error problem between signal, thereby affect equipment room synchronization accuracy. Meanwhile, owing to being all collection of simulant signal in most synchronous, therefore in order to realize the synchronous of many equipment rooms, need to being that a digital module of each equipment increase be realized synchronously, thereby having increased the expense of system. In addition, the high-frequency noise of digital device also may affect the acquisition precision of analog signal, thereby affects entire system performance.
Summary of the invention
The object of the invention is to propose a kind of method that can realize efficient, convenient, reliably many device synchronization collections in complicated site environment.
Core of the present invention is to utilize analog mixed-signal transmission reference clock and triggering signal simultaneously, thereby realizes many device synchronization. Adopt analog mixed-signal, reduced on the one hand the synchronous required line of equipment room, improved the reliability of system; Also the phase delay error of having avoided unlike signal link transmission to cause, can realize more high-precision synchronous simultaneously. In addition, synchronous owing to adopting analog signal to realize, reduce the required extra digit equipment of digital synchronous, avoid the impact of high-frequency digital interference noise, improve systematic function and integrated level.
What the present invention proposed utilizes single channel analog signal to realize the method that many device synchronization gather, described acquisition method is realized by synchronous acquisition device, described harvester comprises that main equipment 1 and N from equipment, the analog mixed-signal 2 that main equipment 1 produces delivers to first from equipment 3 simultaneously, second from equipment 4 until N from equipment 5, return to main equipment 1 simultaneously, analog mixed-signal 2 is the stack of reference clock 6 and triggering signal 7, so just by single channel analog signal link by local reference clock and triggering signal transfers to all main equipments and from equipment simultaneously, each main equipment and receive this analog mixed-signal from equipment, therefrom extract local reference clock and triggering signal, thereby realize the collection of many device synchronization, concrete steps are as follows:
(1) analog acquisition: the analog mixed-signal Real-time Collection to reception is also converted to data signal;
(2) local reference clock extracts: the analog mixed-signal after analog acquisition is delivered to phaselocked loop processing, thereby obtain with reference clock signal synchronous with frequency or the local reference clock of frequency multiplication, taking this signal as sampling clock, realize the synchronous of sampling clock between distinct device;
(3) triggering signal is extracted: the local reference clock obtaining in the analog mixed-signal receiving and step (2) is subtracted each other, can obtain triggering signal;
(4) main equipment and can recover local reference clock and triggering signal from equipment from single channel analog mixed-signal, the local reference clock that utilizes homophase is as main equipment with from the sampling clock of equipment, triggering signal starts control signal as main equipment with from equipment collection, just can realize the synchronous acquisition of equipment room.
In the present invention, described main equipment 1 is made up of the first cabinet 8, the first controller 9, the first acquisition module 10 and analog output module 11, the first controller 9, the first acquisition module 10 and analog output module 11 lay respectively in the first cabinet 8, and described the first controller 9 connects respectively the first acquisition module 10 and analog output module 11.
In the present invention, described first is made up of the second cabinet 12, second controller 13 and the second acquisition module 14 from equipment 3, and second controller 13 and the second acquisition module 14 lay respectively in the second cabinet 12, and the second acquisition module 14 connects second controller 13.
In the present invention, described second is made up of the 3rd cabinet 15, the 3rd controller 16 and the 3rd acquisition module 17 from equipment 4, and the 3rd controller 16 and the 3rd acquisition module 17 lay respectively in the 3rd cabinet 15, and the 3rd acquisition module 17 connects the 3rd controller 16.
In the present invention, the analog output module 11 on described main equipment 1 connects three acquisition module 17 of the first acquisition module, first on main equipment the second acquisition module 14 and second from equipment from equipment.
The present invention has following beneficial effect:
(1) type of service of the present invention is simple, and principle is easy-to-understand. Can realize the synchronous of many equipment rooms by single channel analog mixed-signal, than traditional two ways of digital signals with footwork more economically, convenient, reliable, there is good practicality.
(2) method that the present invention proposes can be applicable to the various application that need to transmit at many equipment rooms multiple signals, be not limited to two-way digital synchronization signal described herein, therefore has good generalization.
Brief description of the drawings
Fig. 1 is principle of the invention block diagram.
Fig. 2 is analog mixed-signal handling process.
Fig. 3 is analog mixed-signal schematic diagram,
Fig. 4 is embodiment of the present invention explanation, 64 passage vibration signal synchronous acquisition system schematic diagrames.
Number in the figure: number in the figure: 1 is main equipment, 2 is analog mixed-signal, 3 is first from equipment, 4 is second from equipment, 5 be N from equipment, 6 is the local reference clock after extracting, 7 is the triggering signal after extracting, and 8 is the first cabinet, and 9 is the first controller, 10 is the first acquisition module, and 11 is analog output module, and 12 is the second cabinet, 13 is second controller, and 14 is the second acquisition module, and 15 is the 3rd cabinet, 16 is the 3rd controller, and 17 is the 3rd acquisition module.
Detailed description of the invention
Further illustrate method of the present invention below by embodiment.
Embodiment 1:
Utilize the inventive method to realize the synchronous acquisition of 3 equipment. Collecting device is respectively main equipment 1, first from equipment 3, second from equipment 4. The first acquisition module 10, the second acquisition module 14 and the 3rd acquisition module 17 are NI9232, the first controller 9, second controller 13 and the 3rd controller 16 all adopt NI9025, the first cabinet 8, the second cabinet 12 and the 3rd cabinet 15 are NI9118, and analog output module 11 is NI9263.
Analog output module 11 in main equipment 1 produces single channel analog mixed-signal 2, deliver to main equipment 1 simultaneously, first from equipment 3 and second from equipment 4, the first acquisition module 10 of main equipment 1, first the second acquisition module 14 from equipment 3 and second receives respectively and gathers this analog mixed-signal 2 from the 3rd acquisition module 17 of equipment 4, then deliver to phaselocked loop processing, obtain and the synchronous local reference clock 6 of reference clock, again analog mixed-signal 2 and local reference clock 6 are subtracted each other, can obtain triggering signal 7, finally utilize synchronous local reference clock 6 as main equipment with from the sampling clock of equipment thereby obtain, triggering signal 7 starts control signal as gathering, just can realize the synchronous acquisition of 3 equipment rooms.
Claims (4)
1. one kind is utilized single channel analog signal to realize the method that many device synchronization gather, it is characterized in that described acquisition method realizes by synchronous acquisition device, described harvester comprises main equipment (1) and from equipment, there is N from equipment, the analog mixed-signal (2) that main equipment (1) produces delivers to first from equipment (3) simultaneously, second from equipment (4) until N from equipment (5), return to main equipment (1) simultaneously, analog mixed-signal (2) is the stack of reference clock (6) and triggering signal (7), so just by single channel analog signal link with reference to clock and triggering signal transfers to all main equipments and from equipment simultaneously, each main equipment and receive this analog mixed-signal from equipment, therefrom extract local reference clock and triggering signal, thereby realize the collection of many device synchronization, concrete steps are as follows:
(1) analog acquisition: the analog mixed-signal Real-time Collection to reception is also converted to data signal;
(2) local reference clock extracts: the composite signal after analog acquisition is delivered to phaselocked loop processing, thereby obtain with reference clock signal synchronous with frequency or the local reference clock of frequency multiplication, taking this signal as sampling clock, realize the synchronous of sampling clock between distinct device;
(3) triggering signal is extracted: the local reference clock obtaining in the analog mixed-signal receiving and step (2) is subtracted each other, can obtain triggering signal;
(4) main equipment and can recover reference clock and triggering signal from equipment from single channel analog mixed-signal, utilize synchronous local reference clock as main equipment with from the sampling clock of equipment, triggering signal starts control signal as main equipment with from equipment collection, just can realize the synchronous acquisition of equipment room.
2. method according to claim 1, it is characterized in that described main equipment (1) is made up of the first cabinet (8), the first controller (9), the first acquisition module (10) and analog output module (11), the first controller (9), the first acquisition module (10) and analog output module (11) lay respectively in the first cabinet (8), and described the first controller (9) connects respectively the first acquisition module (10) and analog output module (11).
3. method according to claim 1, it is characterized in that described from equipment by the second cabinet (12), second controller (13), the second acquisition module (14), the 3rd cabinet (15), the 3rd controller (16) and the 3rd acquisition module (17) composition, second controller (13) and the second acquisition module (14) lay respectively in the second cabinet (12), the second acquisition module (14) connects second controller (13), the 3rd cabinet and the 3rd acquisition module lay respectively in the 3rd cabinet (15), the 3rd acquisition module (17) connects the 3rd controller (16).
4. method according to claim 1, is characterized in that analog output module (11) on described main equipment (1) connects three acquisition module (17) of the first acquisition module (10), first on main equipment (1) the second acquisition module (14) and second from equipment from equipment simultaneously.
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| CN109391319B (en) * | 2017-08-10 | 2022-10-25 | 中兴通讯股份有限公司 | double-PON MAC time synchronization switching processing method and device |
| CN112994871A (en) * | 2019-12-02 | 2021-06-18 | 普源精电科技股份有限公司 | Cascade multi-channel synchronous output device and method of synchronizer |
| CN113701872B (en) * | 2021-08-06 | 2022-03-25 | 北京博华信智科技股份有限公司 | Data synchronization method and system for vibration protection |
| CN118677557A (en) * | 2023-03-20 | 2024-09-20 | 上海交通大学 | A clock synchronization device for blade tip timing acquisition system |
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| CN201017029Y (en) * | 2007-03-08 | 2008-02-06 | 上海聚星仪器有限公司 | GPS-based dynamic signal synchronous acquisition device |
| CN101587499A (en) * | 2009-06-24 | 2009-11-25 | 北京理工大学 | Multi-channel signal acquiring system based on NAND |
| CN102590613A (en) * | 2012-03-14 | 2012-07-18 | 上海聚星仪器有限公司 | Method and device for measuring arrival time difference of radio-frequency signal |
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| JP2003324348A (en) * | 2002-04-30 | 2003-11-14 | Elpida Memory Inc | Dll circuit |
| US7746058B2 (en) * | 2008-03-21 | 2010-06-29 | Tektronix, Inc. | Sequential equivalent—time sampling with an asynchronous reference clock |
| CN202795349U (en) * | 2012-08-07 | 2013-03-13 | 瑞萨电子(中国)有限公司 | Serial bus data analyzer and analysis system |
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| CN201017029Y (en) * | 2007-03-08 | 2008-02-06 | 上海聚星仪器有限公司 | GPS-based dynamic signal synchronous acquisition device |
| CN101587499A (en) * | 2009-06-24 | 2009-11-25 | 北京理工大学 | Multi-channel signal acquiring system based on NAND |
| CN102590613A (en) * | 2012-03-14 | 2012-07-18 | 上海聚星仪器有限公司 | Method and device for measuring arrival time difference of radio-frequency signal |
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| 基于DSP的VXI同步数据采集模块研究;林旭;《中国优秀硕士学位论文全文数据库 信息科技辑》;20030615(第2期);I140-341 * |
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Effective date of registration: 20240711 Address after: Room 201, Building 3, No. 300 Fangchun Road, China (Shanghai) Pilot Free Trade Zone, Pudong New Area, Shanghai, 200000 Patentee after: Shanghai Jianyi Technology Co.,Ltd. Country or region after: China Address before: 2 / F, room 02, building 10, 1387 Zhangdong Road, Pudong New Area, Shanghai, 201203 Patentee before: VI SERVICE NETWORK Co.,Ltd. Country or region before: China |