CN101566845A - Multi-channel synchronous vibration data collecting system - Google Patents

Multi-channel synchronous vibration data collecting system Download PDF

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CN101566845A
CN101566845A CN 200910059506 CN200910059506A CN101566845A CN 101566845 A CN101566845 A CN 101566845A CN 200910059506 CN200910059506 CN 200910059506 CN 200910059506 A CN200910059506 A CN 200910059506A CN 101566845 A CN101566845 A CN 101566845A
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data
microcontroller
signal
programmable
multi
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CN 200910059506
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李晋川
樊瑜波
王汝恒
邹远文
陈国平
黄学进
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西南科技大学;四川大学
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The invention discloses a multi-channel synchronous vibration data collecting system which comprises signal front-end processing modules, a singlechip integration control module, a data communication module and a collection computer; two signal front-end processing modules and one singlechip integration control module form a collecting card; a plurality of the collecting cards are inserted and connected on a shared address, data, clock and triggering bus; one end of the data communication module is also inserted and connected on the shared address, data, clock and triggering bus while the other end thereof is connected with the collecting computer by a USB communication wire; the collecting system can completely meet vibration signal collecting requirement and simultaneously has multiple sampling channels and the function of collecting synchronous signals; the collecting system also has program control function, can meet the need of different sensor types, has high collecting speed, small volume and two collecting functions of common real-time collection and transient collection, can not only be applied to low-frequency vibration test, but also suitable for high-frequency vibration tests such as crash, explosion and the like.

Description

多通道振动数据同步采集系统 Multi-channel data acquisition system synchronization

技术领域 FIELD

本发明涉及振动测试技术领域,确切地说一种多通道振动信号的同步采集系统。 The present invention relates to the technical field of vibration testing, specifically a system for simultaneous acquisition of multi-channel vibration signal. 背景技术 Background technique

振动是广泛存在于自然界和人类社会生活中的一种动态物理现象,是我们观察到的某一平衡位置上的往复运动。 Vibration is a dynamic physical phenomena are widespread in nature and human social life, we observed reciprocating motion on a position of equilibrium. 许多情况下,机械振动会造成危害,它影响精密仪器设备的功能、降低加工零件的精度和表面质量,也加剧了构件的疲劳破坏和磨损,导致构件损坏造成事故。 In many cases, the mechanical vibration can cause harm, it affects the function of sophisticated equipment, reduced accuracy and surface quality of machined parts, also increased the fatigue failure and wear of components, resulting in damage to components caused by the accident. 另外,随着高层柔性建筑的不断涌现,超低频、大幅值、多参量的振动测量也愈来愈引起工程界的重视。 In addition, with high-rise buildings are emerging flexible, ultra-low frequency, large amplitude, multi-parameter measurement of vibration caused by engineering and more and more attention. 对这些振动特性的研究均属于超低频振动的研究范畴。 Research on the vibration characteristics of these studies belong to the category of ultra-low frequency vibration. 在工程上,振动测量是一个十分重要的工作,通过振动测量可以确定振动的加速度、速度和位移等数据,为工程设计、故障的检测与预防提供依据。 In engineering, vibration measurement is a very important work, the vibration can be determined by measuring the vibration acceleration, velocity and displacement data, provide the basis for engineering design, fault detection and prevention. 在实际的结构件振动测量中需要测量很多点数据,少则十几个,多则上百个,为了进一步理论分析的需要,这些信号必须是同步采集,要求采集系统对信号要做到同步触发、同步采集。 Need to measure the actual vibration measurements at many points of data structures, few as a dozen to as many as a hundred, to be analyzed in order to further theory, these signals must be synchronous acquisition request acquisition system trigger signal to be synchronized , synchronous acquisition. 在一些特殊应用中还需要测量一些瞬态信号,比如冲击爆炸,这就要求采集仪的采集速度很高,而且具有存储和回放功能。 In some special applications also need to measure some transient signal, such as the impact of the explosion, which requires a high acquisition speed acquisition instrument, and having storage and playback functions. 振动测量使用的传感器也有很多种类,就测量种类之分有加速度传感器,速度传感器和位移传感器;就传感器输出信号类型有电压型和电荷型,相应的采集系统要具备不同的前端信号处理装置来匹配不同 Sensor vibration measurement used there are many types, on type of measurement points with an acceleration sensor, a speed sensor and a displacement sensor; voltage type and charge type on the sensor output signal type and a corresponding acquisition system to have a different front-end signal processing means to match different

类型的传感器。 Type of sensor. 如电荷输出型传感器,在使用时需要配备电荷放大器使用,目前市面上的多通道电荷放大器大多体积较大,价格昂贵;多通道的数据采集系统大多是电压输入型,很少具备电荷型传感器输入接口。 The charge output type sensor, when used with a charge amplifier needed, most of the current market multichannel charge amplifier bulky, expensive; most of the multi-channel data acquisition system input is a voltage type, comprising a charge type sensor seldom interface.

现有技术中,目前主要数据采集系统研究大致如下,(1)郭宏,基于USB2.0多通道同步数据采集系统的设计,武汉科技大学学报(自然科学版),2006 (5): 496-499;提供了一种同步数据采集系统的建立方法,但是其只有四个采样通道,无法满足振动测试领域的需要。 The prior art, the main data acquisition system research is as follows, (1) Guo, design USB2.0 multi-channel synchronous data acquisition system based on Wuhan University of Science and Technology (Natural Science), 2006 (5): 496- 499; provided a method of establishing synchronous data acquisition system, but only four sampling channels to meet the demands in the field of vibration testing. (2)李春梅,基于USB2.0的多路高精度数据采集系统的研制,电子科技大学硕士论文,2007;给出了数据采集的总体方案和前端模拟信号处理的模型电路,其模拟处理电路设计不具备程控功能,无法满足不同的传感器类型;其采集通道只有8个,而且是采用轮询的方式实现多路信号的采集,采集到的不是同步信号。 (2) Li Chunmei, based on the development of multi-channel USB2.0 high-precision data acquisition system, the master's thesis, University of Electronic Science and Technology, 2007; given the overall program model circuit and analog signal processing front-end data acquisition, the analog processing circuit design We do not have programmed function, can not meet different types of sensors; that collects only eight channels, but the polling manner collecting multi-channel signal, the synchronization signal is not acquired. (3)发明人为赵珞成,李晓明,曾伟民,多通道数据采集方法及装置,中国专利文献,公开号为CN 1584815,公开日为2005年2月23日;其介绍了一种多通道数据采集系统的设计方法,采用模块化设计,将模拟信号处理部分,数据转换部分,控制部分做成一个个模块, 一个数据转换模块可以连接两个或两个以上模拟信号处理模块,利用模拟开关切换各个模拟通道的信号,实现各个通道信号的采集;总控制器可以连接多个数据转换模块,通过这种级联方式可以实现多个通道信号的釆集,而且模块可以根据需要扩展,更换;但是这都局限于异步信号的采集,不能实现同步采集,并且数据采集速度不高,无法满足振动信号采集的要求。 (3) The inventors Zhao Luo into, Xiaoming, had Weimin, multi-channel data acquisition method and apparatus China Patent Document Publication No. CN 1584815, published on 2005 February 23; which describes a multiple channel data acquisition system the method of design, modular design, the analog signal processing section, a data conversion section, the control section to make a module, a data conversion module can be connected to two or more analog signal processing module, each analog switch using analog channels signals, each channel signal acquisition realized; overall controller may be connected to the plurality of data conversion modules, may be implemented preclude a plurality of sets of channel signals in this cascade, and the module can be expanded as needed to replace; but this are limited in collecting asynchronous signals, synchronization acquisition can not be achieved, and the data acquisition speed is not high enough to meet the requirements for vibration signal acquisition. (4)发明人为蔡远文,张迎新,陈胜等,多通道数据采集方法系统及方法,中国文献:公开好为CN101169635,公开日为2008年4月30日;其介绍了一种数据采集系统的设计方法,采用在台式计算机主板插槽上安装采集卡的形式实现数据采集,釆集卡上有多个ADC,可以实现多通道的同步信号采集,同时也有记录分析和网络传输功能;但是受采集卡的体积和本身硬件资源的限制, 一块采集卡上的通道数量有一定的限制,由于计算机内部资源的限制,采集卡的安装个数也有限,这样整个系统的同步采样通道数有限,由于板卡需安装于台式计算机内,体积庞大,不具备便携式的要求。 (4) human invention Caiyuan Wen, Zhang orientation, Sheng and other multi-channel data acquisition system and method method, Chinese literature: public good is CN101169635, publication date April 30, 2008; it describes the design of a data acquisition system the method used in the form of mounting acquisition card data acquisition board slot on a desktop computer, a plurality of the ADC card set Bian, multichannel synchronization acquisition can be achieved, but also the recording and analysis of network transmission; but by the capture card the volume of hardware resources and limits itself, a number of channels on the card collection has certain limitations due to the limitation of resources within the computer, the number of acquisition card installation is limited, such a limited number of the entire system simultaneously sampled channels, since the board be installed in a desktop computer, bulky, do not have the portable requirements. 总之,现有技术中,还没有能适应于振动测试领域中,满足振动信号采集要求,并同时具有多个采样通道和同步信号采集的振动数据采集系统,并且现有振动数据采集系统不具备程控功能,无法满足不同传感器类型,采集速度不高,不具备瞬态采集功能;前端信号处理功能单一,智能化程度低,同步采集通道数量有限;而且每个处理模块单独做成一个系统,使用时需要将各个系统连接起来,导致整个测量系统体积庞大,接线繁琐,系统整体智能化降低,使用不方便,人为故障率提高,成本亦大幅提高。 In summary, the prior art has not been able to adapt to the field of vibration testing, to meet the requirements of the vibration signal acquisition, and data acquisition system also has a plurality of channels sampled signal acquisition and synchronization, and the conventional data acquisition system does not have programmed function, can not meet different types of sensors, acquisition speed is not high, it does not have transient capture function; the single front end signal processing, low intelligence, a limited number of simultaneous acquisition channels; and each processing module to make a single system, the use of necessary to connect the various systems, resulting in the measurement system is bulky, cumbersome wiring, the intelligent system as a whole decreases, inconvenient to use, human error rate is improved, the cost is also greatly improved. 发明内容 SUMMARY

为解决上述技术问题,本发明提出了一种适应于振动测试领域中,完全满足振动信号采集要求,同时具有多个采样通道和能采集同步信号的振动数据采集系统,本发明还具有程控功能,能满足不同传感器类型需要;采集速度高,体积小,并且具有普通实时采集和瞬态采集两种采集功能,不但能应用于低频振动测试,也适合于冲击、爆炸等高频振动测试。 To solve the above problems, the present invention proposes an adaptation to the field of vibration testing, fully meet the requirements of the vibration signal acquisition, while having a plurality of channels and a sampling synchronization signal can be collected vibration data acquisition system, the present invention also has a programmed function, to meet the needs of different types of sensors; high acquisition speed, small size, and having a common real-time collection and transient capture two kinds collection function, can be applied not only to low-frequency vibration test, also for impact, high-frequency vibration test explosions.

本发明是采用下述技术方案实现的: The present invention adopts the following technical solution:

一种多通道振动数据同步采集系统,其特征在于:包括信号前端处理模块,单片机集成控制模块,数据通讯模块和采集计算机;两个前端处理模块和一个单片机集成模块形成一张采集卡,多个采集卡插接在共用的地址、数据、时钟和触发总线上,数据通讯模块的一端也插接在共用的地址、数据、时钟和触发总线上,另一端经USB通讯线与采集计算机连接; A multi-channel data acquisition system synchronization, which is characterized in that: a front end comprising a signal processing module, the microcontroller integrated control module, communication module and a data acquisition computer; two front-end processing module, and a module forming a single-chip integrated acquisition card, a plurality of acquisition card connector on a common address, data, clock and bus trigger, one end of the data communication module is also plugged into the common address, data, clock and bus trigger, the other end of the communication cable via the USB connector and acquisition computer;

所述信号前端处理模块包括电荷放大器部分,仪表放大器部分,信号切换开关部分,程控放大器部分,调零部分和程控低通滤波器部分,传感器信号根据自身是电荷输出型或电压输出型的类别分别输入至电荷放大器部分或仪表放大器部分,程控放大器部分控制所述信号切换开关部分切换选择其中一种类别的信号进入所述程控放大器部分,调零部分在零输入状态下对测试系统和传感器零点进行修正,信号经放大调零后输入至程控滤波器部分处理; Said signal processing module comprises a front end portion of a charge amplifier, instrumentation amplifier part, signal switch portion, programmable amplifier section, and a programmable low-zeroing portions pass filter section, the sensor output signal is a charge according to their type or a voltage output of each category input to the charge amplifier or instrumentation amplifier section portion, a control portion of the programmable amplifier signal switch section switches select one kind of signal into the programmable amplifier section, part of the test system zero and zeros in the zero sensor input state correcting, amplifying the input signal to the programmable filter section after treatment zero;

所述单片机集成控制模块,包括单片机壹,单片机壹包括:与所述地址、数据、时钟和触发总线相连的io接口壹,两个独立16位的ADC,分别为ADC0和ADC1,所述ADC上设有外部转换触发引脚,经一个信号前端处理模块输入的模拟信号对应ADC0,经另一个信号前端处理模块输入的模拟信号对应ADC1, Integrated control module of the microcontroller, the microcontroller comprising a One, One microcontroller comprising: said address, data, clock and trigger bus coupled to the interface io One, two independent 16-bit ADC, respectively ADC1 and ADC0, the ADC on pin provided with an external conversion trigger, via a front-end analog signal corresponding to the input signal processing module ADC0, the other front-end analog signal corresponding to the input signal processing module ADC1,

和控制所述ADC0和ADC1的转换启动方式,转换速度,数据的处理方式,同时控制所述IO接口的状态的微控制器内核; And controls the conversion start ADC0 ADC1 and the conversion speed, the data processing mode, while controlling the state of the microcontroller core IO interface;

所述数据通讯模块,至少由集成USB2.0的控制器的单片机威组成,单片机贰经10接口贰插接在地址、数据、时钟和触发总线上,并连接所有所述单片机集成控制模块上的ADC外部转换触发引脚; The data communication module, at least by the integrated controller USB2.0 SCM K composition, the microcontroller 10 via the interface II II plugged on the address, data, clock and trigger bus, and connected to all of the microcontroller integrated control module ADC external conversion trigger pin;

所述采集板为多个,多个前端处理模块输入的多个测试通道经级联组合。 The plurality of collection plate, a plurality of cascaded distal channel processing module combining a plurality of test inputs.

所述单片机集成控制模块还包括外扩内存,所述ADC上设有DMA,ADC的采样率为1M, ADC0, ADC1与微控制器内核和DMA相连接,单片机壹经外部存储器接口与所述外扩内存连接,所述DMA经外部存储器接口直接写所述外扩内存。 Integrated control of the microcontroller further includes an outer expansion memory module, provided with the DMA ADC, ADC sampling rate 1M, ADC0, ADC1 is connected to the microcontroller core and DMA, external microcontroller via the external memory interface One of the expanded memory is connected, via the external memory interface the DMA write directly to the extended memory.

所述测试通道为128个,每16个测试通道为一组,每组单独使用或通过级联任意组合使用。 The test channels 128, each channel 16 is a set of tests, each used alone or in any combination through the cascade.

所述程控放大器部分由两组程控运算放大器级联而成,用于实现1, 2,4, 8, 10, 20, 40, 80, 100, 200,魏800, 1000, 2000, 4000, 8000,共16种放大倍数。 The programmable amplifier consists of two cascaded programmable portion from the operational amplifier used to implement a 2,4, 8, 10, 20, 40, 80, 100, 200, 800 Wei, 1000, 2000, 4000, 8000, 16 species magnification.

所述程控低通滤波器部分是由实现截止频率为1HZ-3KHZ的低通滤波,和实现步长为1HZ的截止频率调节的程控低通开关电容滤波器组成。 The programmable low-pass filter section is implemented by the low pass filter cut-off frequency of 1HZ-3KHZ, and implementation steps of adjusting the cutoff frequency of 1HZ programmable low-pass switched-capacitor filter. 其截止频率是由外部信号的频率决定,单片机集成控制模块通过IO接口壹给所述程控低通滤波器提供一定频率的时钟信号,可以实现截止频率为1HZ-3KHZ的低通滤波,并可以实现步长为1HZ的截止频率调节。 Which is a cut-off frequency determined by the frequency of the external signal, the microcontroller integrated control module via the IO interface One of the programmable low pass filter to provide a frequency of the clock signal, the cutoff frequency may be implemented as a low-pass filtering 1HZ-3KHZ and can be achieved the step of adjusting the cutoff frequency 1HZ.

信号切换开关部分是单刀双掷的继电器。 A signal switch portion of relay SPDT.

所述地址、数据、时钟和触发总线具体是指地址和数据总线,时钟线和ADC的公共触发总线。 Said address, data, clock, and specifically trigger bus address and data bus means, the ADC clock line and a common trigger bus.

所述信号切换开关部分,程控放大器部分,调零部分和程控低通滤波器部分的控制是通过所述单片机集成模块实现的。 The signal switch section, programmable amplifier section, and a control portion zeroing programmable low-pass filter section is implemented by the integration module of the microcontroller.

所述ADC即模数转换器的英文简写,所述DMA即存储器直接访问的英文简写。 I.e., the analog to digital converter ADC English short, i.e., the direct memory access DMA abbreviated English.

与以背景技术中所罗列的为代表的现有技术相比,本发明的优点表现 In comparison with the background art as listed in the prior art as represented, the performance advantages of the present invention

在: in:

1、本发明由于采用"前端处理模块,单片机集成控制模块,数据通讯模块和采集计算机相连,并且多个前端处理模块和单片机集成控制模块形成的多个采集卡都插接在一个共用的地址、数据、时钟和触发总线上,多个测试通道经级联组合,数据通讯模块上的单片机贰经10接口贰连接所有单片机集成控制模块上的ADC外部转换触发引脚"这样的技术方案,能完全满足振动信号的采集要求,并同时具有多个采样通道和实现了所有测试通道的同步触发转换,实现了同步采集的功能;在地址总线和带宽容许的情况下可以根据需要任意扩展测试通道的个数;除此之外,本方案还具有程控功能,能满足不同传感器类型需要,即可采用电荷输出型传感器,也可采用电压输出型传感器;将电荷放大器部分,仪表放大器部分,程控放大器部分和程控低通滤波器部分集成到 1, since the present invention is a "front-end processing module, a control module integrated microcontroller, data acquisition and communication module connected to the computer, and a plurality of distal grabber plurality of processing modules and a control module integrated microcontroller formed are inserted in a common address, data, clock and trigger bus, a plurality of test channels cascaded combination, II microcontroller on the data communication module 10 via the interface II are connected to all external ADC conversion microcontroller integrated control module triggers pin "this technical solution, fully to meet the requirements of the vibration signal acquisition, and also having a plurality of channels and a sampling trigger to achieve the synchronization of all test channels conversion, synchronization acquisition function; may be arbitrarily extended test channels in case the address bus and the bandwidth is allowable as required number; In addition, the present embodiment also has a programmable function, to meet the needs of different types of sensors, to charge output using a sensor, a voltage output type sensor may be employed; charge amplifier portion, instrumentation amplifier section, and a programmable amplifier portion programmable integrated low-pass filter section 端处理模块中;以及将普通釆集功能和瞬时采集功能都集成在单片机集成控制模块中,从而简化了系统设计,提高了系统可靠性,使本系统结构简单,体积小,节约了生产成本。 End processing module; and preclude normal function set and instantaneous acquisition functions are integrated in the single chip integrated control module, thus simplifying the system design, to improve the reliability of the system, so that this system is simple, small in size, saving production costs.

2、 本发明采用"单片机集成控制模块还包括外扩内存,ADC上设有DMA, ADC的采样率为1M,单片机壹经外部存储器接口与外扩内存连接,DMA经外部存储器接口直接写所述外扩内存"这样的技术方案,硬件自动将ADC转换数据直接通过外部存储器接口写到外扩内存中,这个过程不需要微控制器内核的干预,由于整个过程都是纯硬件操作,速度非常快,非常适合瞬态采集,因此,使得本系统不但能应用于低频振动测试,也适合于冲击、爆炸等高频振动测试。 2, the present invention is a "single-chip integrated control module further comprises a flared memory, DMA is provided on the ADC, ADC sampling rate 1M, microcontroller One extended memory via the external memory interface connected to the outer, DMA write directly via the external memory interface extended memory "this technical solution, the ADC hardware will automatically write data directly via the external memory interface extended memory, this process does not require the intervention of a microcontroller core, since the whole process is purely a hardware operation, very fast , is very suitable for transient capture, therefore, that the present system not only can be applied to low-frequency vibration test, vibration test is also suitable for high-frequency shock, explosion and the like. 另外本发明不仅可以应用在振动测试领域,还可以通过匹配其它类型的传感器应用于其它测试领域,如压力测量,位移测量,温度测量,湿度测量,具备一机多用的功能。 Further the present invention can be applied not only in the field of vibration testing, the test may also be applied to other field by matching other types of sensors, such as pressure measurements, the displacement measurement, temperature measurement, the humidity measurement, comprising a machine function.

3、 高智能化,将嵌入式技术和计算机软件技术应用到本系统,可以在计算机上通过软件系统设置每个测试通道的信号选择,放大倍数,滤波截止频率。 3, high intelligence, embedded software technology and computer technology to the system, a signal may be provided for each test channel selected by software on a computer system, the magnification, the filter cutoff frequency. 另外不同的软件模块亦可以实时显示,存储并分析各个采集通道的数据,得出振动测试需要的参数。 Further different software modules can also be displayed in real time, and analyze data stored in the respective acquisition channels, obtain parameters required for vibration testing. 高精确度,在计算机的控制下,按照设定参数运行,不需要人工干预,提高了测量的准确性;系统采用的16位的高精度的ADC,从硬件上提高了系统的整体测量精度。 High accuracy under computer control, in accordance with the set operation parameters, without human intervention, improves the accuracy of the measurement; high precision ADC 16 bit system uses, improves the overall system accuracy from the hardware. 高可靠性,本系统使用的器件大多采用高集成度可编程器件,简化了硬件电路的设计调试工作,提高可靠性。 High reliability, the device used in the system they use highly integrated programmable device, simplifies the debugging hardware circuit design, to improve reliability. 易扩展性,在地址总线和带宽容许的情况下可以根据需要任意扩展通道数, 一个采集卡上是集成两个通道,如需要32个通道就需要16张采集卡。 Easy to extend, in a case where the bandwidth of the address bus and the number of allowable channels may be arbitrarily extended as required, a capture card is an integrated two channels, such as the need requires 32 16-channel acquisition card. 用户不仅可以匹配数据采集的采集卡也可以匹配其它的功能的采集卡,如控制功能的釆集卡,通讯功能的采集卡。 The user can not only match the data acquisition card collection may also match other functions of capture card, such as card set Bian, communication control function of the acquisition card. 另外在采集计算机上使用的软件部分还具有较高的通用性,兼容性,容错性和可维护性,用户只要对软件稍加改动就可以增加本系统的功能,为以后的扩展留有较大的平台。 Also part of the software used on collection computer also has a high versatility, compatibility, maintainability and fault tolerance, as long as the user of the software can be increased a little change the function of the system, leaving large for future expansion platform.

附图说明 BRIEF DESCRIPTION

下面将结合说明书附图和具体实施方式对本发明作进一步的详细说 In conjunction with the accompanying drawings and the following description of specific embodiments of the present invention is further detailed

明,其中: Ming, of which:

图1为本发明的总体结构框图图2为前端处理模块的结构框图图3为单片机集成控制模块内部框图图4为放大倍数译码参数表具体实施方式实施例1 Figure 1 is a block diagram showing the overall structure of the invention FIG 2 is a block diagram showing the structure of the front end processing module 3 is a block diagram showing the internal microcontroller integrated control module 4 is a magnification of Example 1. DETAILED DESCRIPTION decoding parameter table

参照说明书附图1、 2和3,本发明公开了一种多通道振动数据同步采集系统,包括信号前端处理模块,单片机集成控制模块,数据通讯模块和采集计算机;两个前端处理模块和一个单片机集成模块形成一张采集卡,多个采集卡插接在共用的地址、数据、时钟和触发总线上,数据通讯模块的一端也插接在共用的地址、数据、时钟和触发总线上,另一端经USB通讯线与采集计算机连接;所述信号前端处理模块包括电荷放大器部分,仪表放大器部分,信号切换开关部分,程控放大器部分,调零部分和程控低通滤波器部分,传感器信号根据自身是电荷输出型或电压输出型的类别分别输入至电荷放大器部分或仪表放大器部分,程控放大器部分控制所述信号切换开关部分切换选择其中一种类别的信号进入所述程控放大器部分,调零部分在零输入状态下对测试系统和 Referring to the accompanying drawings 1, 2 and 3, the present invention discloses a multi-channel data acquisition system synchronization, the front end includes a signal processing module, the microcontroller integrated control module, communication module and a data acquisition computer; two front-end processing module and a microcontroller forming an integrated module acquisition card, a plurality of capture card connector on a common address, data, clock and bus trigger, one end of the data communication module is also plugged into the common address, data, clock and trigger bus, and the other end connected to the computer via the USB communication cable acquisition; said signal processing module comprises a front end portion of a charge amplifier, instrumentation amplifier part, signal switch portion, programmable amplifier section, and a programmable low-zeroing portions pass filter section, according to the sensor signal itself is the charge output or a voltage output type categories are input to the charge amplifier or instrumentation amplifier section portion, a control portion of the programmable amplifier signal switch section switches select one kind of signal into the programmable amplifier section, zero zero input portion the state of the system and test 传感器零点进行修正,信号经放大调零后输入至程控滤波器部分处理;所述单片机集成控制模块,包括单片机壹,单片机壹包括:与所述地址、数据、时钟和触发总线相连的10接口壹,两个独立16位的ADC,分别为ADCO和ADC1,所述ADC上设有外部转换触发引脚,经一个信号前端处理模块输入的模拟信号对应ADC0,经另一个信号前端处理模块输入的模拟信号对应ADC1,和控制所述ADC0和ADC1的转换启动方式,转换速度,数据的处理方式,同时控制所述IO接口的状态的微控制器内核;所述数据通讯模块,至少由集成USB2.0的控制器的单片机贰组成,单片机贰经10接口贰插接在地址、数据、时钟和触发总线上,并连接所有所述单片机集成控制模块上的ADC外部转换触发引脚;所述采集板为多个,多个前端处理模块输入的多个测试通道经级联组合。 Sensor zero point correction process is input to the programmable filter portion after zeroing the amplified signal; integrated control module of the microcontroller, the microcontroller comprising a One, One microcontroller comprising: said address, data, and clock 10 connected to the trigger bus interfaces One , two independent 16-bit ADC, respectively ADCO and ADC1, is provided on the exterior of the ADC conversion trigger pin, the analog signal is a signal corresponding to the input front-end processing module ADC0, the analog front end processing module via another input signal ADC1 signals corresponding microcontroller core, and the control and ADC0 ADC1 startup mode conversion, speed conversion, data handling, while controlling the state of the IO interface; the data communication module, at least by the integrated USB2.0 composition II MCU controller, microcontroller 10 via the interface II II plugged on the address, data, clock and trigger bus, and connected to an external ADC conversion on all of the microcontroller integrated control module triggers pin; the collecting plate a plurality, the plurality of cascaded combining a plurality of test channel front-end processing module inputs. 本实施例可适用于普通采集实时采集模式。 The present embodiment is applicable to ordinary acquire real acquisition mode.

实施例2 Example 2

在实施例l的基础上,所述单片机集成控制模块还包括外扩内存,所述ADC上设有DMA, ADC的采样率为1M, ADCO, ADC1与微控制器内核和DMA相连接,单片机壹经外部存储器接口与所述外扩内存连接,所述DMA经外部存储器接口直接写所述外扩内存。 On the basis of Example l on a single chip integrated control module further comprises a flared memory, DMA is provided on the ADC, ADC sampling rate 1M, ADCO, ADC1 is connected to the microcontroller core and DMA, microcontroller One via the external memory interface connected to the extended memory, the external memory interface directly via DMA write the extended memory. 本实施例可适用于普通实时采集模式和瞬态采集模式。 The present embodiment is applicable to real-time acquisition mode and the normal transient capture mode.

实施例3 Example 3

在实施例1和2的基础上,所述测试通道为128个,每16个测试通道为一组,每组单独使用或通过级联任意组合使用。 In Examples 1 and 2 based on the test channels 128, each channel 16 is a set of tests, each used alone or in any combination through the cascade. 所述程控放大器部分由两组程控运算放大器级联而成,用于实现l, 2, 4, 8, 10, 20, 40, 80,100, 200, 400, 800, 1000, 2000, 4000, 8000,共16种放大倍数。 The programmable amplifier consists of two cascaded programmable portion from the operational amplifier for achieving l, 2, 4, 8, 10, 20, 40, 80,100, 200, 400, 800, 1000, 2000, 4000, 8000 , 16 species magnification. 所述程控低通滤波器部分是由实现截止频率为1HZ-3KHZ的低通滤波,和实现步长为1HZ的截止频率调节的程控低通开关电容滤波器组成。 The programmable low-pass filter section is implemented by the low pass filter cut-off frequency of 1HZ-3KHZ, and implementation steps of adjusting the cutoff frequency of 1HZ programmable low-pass switched-capacitor filter. 其截止频率是由外部信号的频率决定,单片机集成控制模块通过10接口壹给所述程控低通滤波器提供一定频率的时钟信号,可以实现截止频率为1HZ-3KHZ的低通滤波,并可以实现步长为1HZ的截止频率调节。 Off frequency is determined by the frequency of the external signal, the microcontroller 10 via an interface integrated control module One programmable clock signal to said low pass filter provides a certain frequency, the cutoff frequency may be implemented as a low-pass filtering 1HZ-3KHZ and can be achieved the step of adjusting the cutoff frequency 1HZ. 信号切换开关部分是单刀双掷的继电器。 A signal switch portion of relay SPDT. 所述地址、数据、时钟和触发总线具体是指地址和数据总线,时钟线和ADC的公共触发总线。 Said address, data, clock, and specifically trigger bus address and data bus means, the ADC clock line and a common trigger bus. 所述信号切换开关部分,程控放大器部分,调零部分和程控低通滤波器部分的控制是通过所述单片机集成模块实现的。 The signal switch section, programmable amplifier section, and a control portion zeroing programmable low-pass filter section is implemented by the integration module of the microcontroller. 所述ADC即模数转换器的英文简写,所述DMA即存储器直接访问的英文简写。 I.e., the analog to digital converter ADC English short, i.e., the direct memory access DMA abbreviated English. 实施例4 Example 4

本发明一较佳实施方式如下: A preferred embodiment of the present invention is as follows:

参见图l所示,本发明所示的采集系统结构采用子插板和背板(集控板)的总体结构。 Referring to Figure l, the acquisition system configuration shown in the present invention employs daughter board and backplane (control panels) of the overall structure. 一张子插板即是一张采集卡,包含两个所述的信号采集通道;采集卡上集成的模块包括两个前端处理模块和一个单片机集成控制模块。 A daughter board means one acquisition card sheets, comprising two of said signal acquisition channels; integrated on the card module comprises two acquisition modules and a front-end processing integrated control module SCM. 背板(集控板)将每张采集卡接插在同一地址,数据,时钟和触发总线上,与数据通讯模块连接。 Backplane (control panels) to each capture card connector on the same address bus, data, clock and a trigger, connected with the data communication module. 背板(集控板)上有一定数量的插槽,对应相应数量的采集卡,进而对应的采集通道数亦就是采集卡数量的两倍;另外背板还具有扩展功能,在总线带宽允许的条件下可以将两个或更多的背板通过级联方式连接在一起构成更多采集通道的数据采集系统。 Backplane (control panels) have a certain number of slots, a corresponding number of the corresponding acquisition card and thus also corresponding to the number of acquisition channels is twice the acquisition card number; the other backing plate further has an extended function that allows the bus bandwidth two or more can be connected through the backplane under conditions cascaded together to form a data acquisition system more acquisition channels. 数据通讯模块负责计算机和每张采集卡的通讯工作(数据的分发和收集),还负责为各通道ADC提供触发信号,其通过USB电缆与计算机连接。 Data communication module responsible for computer and communications work for each acquisition card (data distribution and collection), is also responsible for the channel ADC provide a trigger signal, which is connected to the computer via a USB cable.

参见图2所示,为前端处理模块的结构框图,电荷放大器部分对应的是电荷输出型的传感器,仪表放大器部分对应的是电压输出型传感器,而后经过一个单刀双掷的继电器选择两部分信号之一进入后面的程控放大滤波和调零部分处理后进入单片机集成模块进行AD转换。 Referring to FIG. 2, a block diagram for the front-end processing module, a charge amplifier portions corresponding to the charge output sensors, instrumentation amplifier section corresponds to the voltage output type sensor, then through a relay SPDT selection signal of the two parts after a filtered back into the programmable amplifier and a zero portion of the processing module integrated into the microcontroller AD conversion. 这几部分的控制由单片机集成控制模块控制。 Controlling these parts is controlled by the integrated control module SCM.

参见图3所示,单片机集成控制模块包含微控制器内核,IO接口壹,ADCO, ADC1, DMA,外部存储器接口和外扩内存;ADC0, ADC1与微控制器内核和DMA相连接。 Referring to FIG. 3, the control module comprises a microcontroller integrated microcontroller core, the IO interfaces One, ADCO, ADC1, DMA, external memory interface, and extended memory; ADC0, ADC1 is connected to the microcontroller core and DMA. DMA可以通过外部存储器接口直接写外扩内存。 DMA can be written directly to the external memory through the external memory interface expansion. 微控制器内核可以控制ADC0和ADC1的转换启动方式,转换速度,数据的处理方式,同时控制IO接口壹的状态;ADC的采样分辨率为16位。 The microcontroller core ADC0 and ADC1 may control startup mode conversion, speed conversion, data handling, control state while One of the IO interface; the ADC sampling resolution of 16 bits.

实施例5 Example 5

作为一较佳的普通实时采集模式如下: As a preferred mode of the normal real-time acquisition is as follows:

普通实时采集模式就是每个测试通道按照既定的频率釆集数据,将数据分批实时传回至采集计算机的模式。 Normal mode is the real-time acquisition of each test channel preclude the collection of data in accordance with a predetermined frequency, the data in batches to capture the real-time mode back to the computer. 首先对系统进行配置,配置完成后便可以进行采集。 First, the system configuration, the configuration can be carried out after acquisition.

参数配置具体操作流程和系统工作原理介绍如下: Specific parameters and operational procedures The system works as follows:

91. 在计算机的软件上选择普通实时采集模式,设置相应的釆集参数, 并通过USB接口发送至数据通讯模块。 91. Select Normal mode real-time collection software on the computer, setting the corresponding parameters set Bian, and sent to the data communication module through the USB interface. 所述参数包括:采集通道号,信号类型,放大倍数,滤波截止频率,采样率。 The parameters include: collecting channel number, type of signal, magnification, filter cutoff frequency, sampling rate. 采集通道号表示需要进行采集的通道在系统中的物理标号;信号类型表示前端处理模块配接的传感器的类型,分为电荷输出型和电压输出型两种;放大倍数如前面所述的一样有16种;滤波截止频率可以从1HZ〜3KHZ实现无级调节;采样率为1秒中采集多少个样本点,从1K到IOK可以任意设置,因为本发明的是同步系统,每个通道的采样均是同步的,所有通道只能使用一个采样率。 Acquisition channel number indicates physical channel needs to be collected in a reference system; signal type indicates the type of the processing module connected with the front end of the sensor, it is divided into two kinds of output voltages and charge output; have the same magnification as previously described 16 kinds; filter cutoff frequency can be adjusted stepless from 1HZ~3KHZ; the number of sample points collected in one second sampling rate, from 1K to IOK can be arbitrarily set, since the present invention is a synchronous system, each channel are sampled is synchronous, all channels can only use a sampling rate.

2. 数据通讯模块接收到配置数据,将每个通道配置数据发送至相应通道的单片机集成控制模块,单片机贰通过给出不同的地址位选中不同的通道,在此预留7位地址线,可以选择128个通道,在选中通道后,将配置数据通过公用数据总线发送至被选中单片机集成控制模块。 2. Data communication module receiving the configuration data, the configuration data for each channel to transmit the channel to the respective integration control module SCM, SCM II by giving different address bits select different channels, this reserved address lines 7, can be select the 128 channels in the selected channel, transmitting the configuration data to the microcontroller integrated control module is selected via the common data bus. 系统的采样率配置的实现是在单片机贰上实现的,单片机威根据具体的采样率数值设置其定时器的定时参数,以在其控制10上产生固定频率,固定占空比的方波,进而给所有采集卡上ADC提供外部转触发信号,这样就做到同步采样,满足了振动测试的要求,假设系统的采样为1K,那么单片机武每lms 产生一个触发信号,所有通道的ADC都开始转换。 Performs sampling rate of the system configuration is implemented in SCM II, set the timing parameters which K microcontroller timer values ​​depending on the sampling rate, to produce a fixed frequency at its control 10, fixed duty cycle square wave, and further All capture cards to provide an external ADC transfer trigger signal, thus to achieve simultaneous sampling, to meet the requirements of the vibration test, the sampling system is assumed 1K, then every lms Wu microcontroller generates a trigger signal, all the channels start ADC conversion . 一般的振动测试为低频振动测试,本发明普通实时采集模式在128通道都被使用时提供0.5K的采样率,完全可以满足采样率的要求。 General vibration test for testing low-frequency vibration, the present invention is common mode provides real-time acquisition sampling rate of 0.5K in the 128 channels are used, fully meet the requirements of the sampling rate.

3. 单片机集成模块接收到通道配置数据后,对通道进行配置。 3. The microcontroller integrated module after receiving the channel configuration data, the configuration of the channel. 由于一个单片机集成控制模块控制两个通道的参数控制,根据其被配置的通道, 对配置数据进行译码,进而在相应通道控制10上输出相应的电平信号, 如图2所示,若选中电荷型输出传感器,就在控制继电器的10上输出低电平,电荷放大器输出的信号被接通,反之,若是电压输出型传感器就输出高电平,仪表放大器输出的信号被接通;放大倍数由四根控制线控制, 其译码可以到16种放大倍数,具体译码参数如图4所示,单片机壹根据具体的放大倍数译码输出电平即可实现对程控放大器的控制;程控低通滤波器的截止频率是由单片机壹控制10输出的脉冲频率决定,根据具体的频率通过定时器中断的方式在10上输出既定频率的方波即可实现控制。 Since a single chip integrated control module controls two channels of the control parameters, according to which the channel is configured, the configuration data is decoded, and then output a corresponding level signal on the respective channel control 10, shown in Figure 2, when the select charge output type sensor, it outputs a low level signal is turned on, the output of the charge amplifier 10 controls the relay, on the contrary, if the voltage output type sensor outputs a high level signal is output from the instrumentation amplifier is turned on; magnification by the four control lines which can be decoded into 16 kinds of magnification, as shown in FIG particular transcoding parameters, the microcontroller One can achieve control of the programmable amplifier in accordance with the specific magnification of the decode output level 4; programmable low pass filter cut-off frequency is controlled by the microcontroller 10 One pulse output frequency is determined, the output 10 depending on the frequency by way of the timer interrupt a predetermined frequency square wave control can be realized. 调零就是是否需要通过调零部分对信号进行补偿,系统自动完成,其原理是, 单片机壹通过软件启动AD转换,根据采样值和设定的零点计算出误差值, 再根据放大倍数计算出DAC的控制数据,输出既定的补偿电压,在启动AD转换,根据采样值和零点值进行比较,若大于零点值调小DAC输出的补偿电压一个分辨位,相反则增加一个分辨位的补偿电压,如此反复循环, 直到采样值与零点值的差在允许的范围之内。 Zero is the need for adjustment of the zero signal compensation part automatically performed, the principle is the microcontroller software One starts AD conversion, in accordance with the calculated error value and the zero sample value is set, then calculate the DAC according to the magnification control data, output a predetermined offset voltage, starting AD conversion, compared according to the sampling values ​​and the zero point value, the compensation if the voltage is greater than zero adjust small DAC output a resolution bit, opposite to increase the compensation voltage a resolution bit, so repeated cycles until the difference value and the zero sample value within the permissible range. 单片机壹中的ADC转换方式有几种,有内部软件触发,定时器触发,外部触发,输出处理方式有两种,DMA模式和常规模式,在普通实时采集模式下要配置为常规模式,常规模式就是用微控制器内核通过软件来处理ADC转换完成的数据。 One MCU ADC conversion mode in several, internal software trigger, trigger timer, external trigger, output process in two ways, the DMA mode and the normal mode, in the normal mode to be configured for real-time acquisition normal mode, the normal mode ADC conversion process is performed to data by the software using a microcontroller core. 经过上面所述的过程之后普通工作的配置模式完成,就可以完成采集, 接下来详细介绍完成从启动采集到第一组数据被传回计算机的原理和过程方法:在计算机的软件上启动采集命令,软件通过USB端口发送一个启动指令,单片机威接收到采集指令后启动定时器,按照设定频率中断,在中断服务程序中,首先产生一个上升沿的启动信号,所有被选中通道的AD 同时启动转换,待转换完成后,单片机贰依次轮流读取各通道的数据,首先单片机戴在地址线上给出第一个被选通道的地址译码,这样被选单片机 After the above process is completed configuration ordinary operation mode, the acquisition can be completed, the following described in detail to complete the acquisition process from the start to the principles and methods set of data is transmitted back to the first computer: software on the computer to start acquisition command , the software transmits a start command via the USB port, the microcontroller K acquiring instruction is received a timer is started according to the set frequency interrupt, the interrupt service routine, a first rising edge of the start signal, all of the selected channels simultaneously start AD conversion, until the conversion is complete, microcontroller II sequentially read in turn data of each channel, a first single-chip address decoder wear given first selected channel on the address lines, so that the selected SCM

壹就会把ADC转换的数据输出到数据总线上,再给出一个应答信号,单片机贰就把数据线上的数据读取并存储在固定的存储空间上,依次按照此方法读取另一通道,直到所有被选中通道被读取完毕,这样单片机贰就将一次转换的所有数据收集完成,在下一次中断时重复这个过程。 One ADC will output the converted data to the data bus, and then give a response signal, the microcontroller data on the line II put the read and stored in a fixed storage space, the other channels are sequentially read in accordance with the method until all of the selected channels is read is completed, all of the data conversion so that the microcontroller will II collection is completed, the process is repeated at the next interrupt. 采集计算上的软件定时读取单片机贰上的采集数据,单片机贰会将这些数据打包通过USB2.0接口发送至计算机,实现数据的实时传输,这就是一次完成的采集过程。 Collection software on the computing timing of the read data collection microcontroller II, II microcontroller will package the data transmitted to the computer via USB2.0 interface, real-time transmission of data, which is a complete collection process. 依照上面的过程循环进行采集就可以完成普通实时采集模式的功能。 In accordance with the above process cycle can collect real-time acquisition completion normal mode.

实施例6 Example 6

作为一较佳的瞬态采集模式如下: As a preferred transient capture mode as follows:

瞬态采集模式是以高速采样率采样将转换数据存储在每张采集卡上单片机集成模块上的外扩内存中,在瞬态采集结束后,数据通讯模块将每个 Transient capture mode is a high speed sampling rates to convert the data stored in each memory card collection flared microcontroller integrated on the module, after the transient capture, each data communication module

外扩内存中的数据读取再通过USB2.0接口发送至计算机,完成一次瞬态采集过程。 Extended memory data is read and then transmitted to the computer via USB2.0 interface, a transient complete the acquisition process.

通道的参数配置流程和实施例5中的相同,在单片机壹对ADC转换数据的处理有所不同,具体为:单片机壹将ADC配置为外部启动模式, DMA模式;DMA模式是在每一次ADC转换完成后,硬件自动将ADC转换数据直接通过外部存储器接口写到外扩内存中,这个过程不需要CPU的干预,如图3所示,由于整个过程是纯硬件操作,速度非常快,非常适合瞬态采集模式。 Channel configuration parameters and processes same as in the embodiment 5, the microcontroller One different ADC conversion process on the data, specifically: One microcontroller The ADC is configured as an external start mode, the DMA mode; the DMA mode are each ADC conversion after completion, the ADC conversion hardware automatically via the external memory interface data directly written in extended memory, this process does not require the intervention of the CPU, shown in Figure 3, since the whole process is purely hardware operations, very fast, very suitable for instantaneous state acquisition mode. 若一张采集卡外扩内存为128K,采样率为IOK,ADC转换的精度为16位(2字节),如果只对一个通道进行瞬态采集,可以连续进行6.04s的瞬态采集,如果两个通道都使用可以进行3.02s的瞬态采集;若提高采样率,由于外扩内存容量的限制,瞬态采样的时间会减少,若扩充外扩内存的容量,可以在高采样率的条件下,延长瞬态采集时间。 If a memory expansion card for the acquisition outer 128K, sampling rate IOK, ADC conversion accuracy of 16 bits (2 bytes), if only a transient channel acquisition, the acquisition may be performed continuously transient 6.04s, if both channels can be used for transient capture 3.02s; if the sampling rate increase, due to the extended memory, the transient sampling time is reduced, if the extended memory capacity expansion may be high sampling rate conditions under transient extended acquisition time. ADC转换需要的外部触发信号还是由单片机按实施例1中所述的方式提供既定频率的触发信号。 External trigger signal for the ADC trigger signal is a predetermined frequency in the manner described in Example 1 by the microcontroller.

瞬态采集完成后,计算机先将读取的通道号发送至信号通讯模块,单片机贰在地址线上给出被选通道的地址译码,单片机贰读取外扩内存中存储的一次ADC数据放置在总线上,单片机贰将数据总线上的数据读取到内存中,再根据既定时序依次将存储的所有ADC数据依次读取到单片机贰的内存中,单片机壹也将外扩内存中数据按次序读取出来放置在数据总线上;单片机贰将所有数据通过USB接口发送至计算机。 After transient capture is completed, the computer first reads the channel number of the communication module transmits a signal to the microcontroller address decoder II gives the selected channel on an address line, a microcontroller II ADC reading data stored in the extended memory is placed on the bus, the microcontroller II read data on the data bus to the memory, all ADC data is then sequentially stored in accordance with a predetermined timing to sequentially read II microcontroller memory, the microcontroller will One extended memory data in order, read out is placed on the data bus; II microcontroller to send all data to the computer via the USB interface. 然后计算机在按照相同的方法读取下一个被选通道直到把所有的通道读取完毕完成一次瞬态采集过程。 The computer then selected a channel until the completion of all the channels has been read at the reading time according to the same manner as transient capture process.

本发明不限于上述实施例,根据上述实施例的描述,本领域的普通技术人员还可对上述实施例进行任意组合和显而易见的改变,但这并不脱离本发明权利要求的保护范围。 The present invention is not limited to the above embodiments, the description of the above embodiments, those of ordinary skill in the art may also be of any combination of the above-described embodiments and obvious variations, but without departing from the scope of the claims of the invention.

Claims (8)

1、一种多通道振动数据同步采集系统,其特征在于:包括信号前端处理模块,单片机集成控制模块,数据通讯模块和采集计算机;两个前端处理模块和一个单片机集成模块形成一张采集卡,多个采集卡插接在共用的地址、数据、时钟和触发总线上,数据通讯模块的一端也插接在共用的地址、数据、时钟和触发总线上,另一端经USB通讯线与采集计算机连接; 所述信号前端处理模块包括电荷放大器部分,仪表放大器部分,信号切换开关部分,程控放大器部分,调零部分和程控低通滤波器部分,传感器信号根据自身是电荷输出型或电压输出型的类别分别输入至电荷放大器部分或仪表放大器部分,程控放大器部分控制所述信号切换开关部分切换选择其中一种类别的信号进入所述程控放大器部分,调零部分在零输入状态下对测试系统和传感器零点进行修正 A multi-channel data acquisition system synchronization, which is characterized in that: a front end comprising a signal processing module, the microcontroller integrated control module, communication module and a data acquisition computer; two front-end processing module, and a module forming a single-chip integrated acquisition card, multiple acquisition card connector on a common address, data, clock and bus trigger, one end of the data communication module is also plugged into the common address, data, clock and trigger bus, and the other end connected via a USB cable and the communication acquisition computer ; said signal processing module comprises a front end portion of a charge amplifier, instrumentation amplifier part, signal switch portion, programmable amplifier section, and a programmable low-zeroing portions pass filter section, the sensor output signal is a charge according to their voltage output type or category are input to the charge amplifier or instrumentation amplifier section portion, a control portion of the programmable amplifier signal switch section switches select one kind of signal into the programmable amplifier section, zero zero input portion in a state of zero and a sensor testing system correction 信号经放大调零后输入至程控滤波器部分处理; 所述单片机集成控制模块,包括单片机壹,单片机壹包括: 与所述地址、数据、时钟和触发总线相连的IO接口壹, 两个独立16位的ADC,分别为ADC0和ADC1,所述ADC上设有外部转换触发引脚,经一个信号前端处理模块输入的模拟信号对应ADC0,经另一个信号前端处理模块输入的模拟信号对应ADC1, 和控制所述ADC0和ADC1的转换启动方式,转换速度,数据的处理方式,同时控制所述IO接口的状态的微控制器内核; 所述数据通讯模块,至少由集成USB2.0的控制器的单片机贰组成,单片机贰经IO接口贰插接在地址、数据、时钟和触发总线上,并连接所有所述单片机集成控制模块上的ADC外部转换触发引脚; 所述采集板为多个,多个前端处理模块输入的多个测试通道经级联组合。 Amplifying the input signal to the programmable filter portion zeroing process; integrated control module of the microcontroller, the microcontroller comprising a One, One microcontroller comprising: said address, data, clock and bus IO interface connected trigger One, two independent 16 bit ADC, respectively ADC1 and ADC0, the ADC conversion trigger pin is provided on the exterior, via a front-end analog signal corresponding to the input signal processing module ADC0, the front end analog signal processing module further input signals corresponding ADC1, and the microcontroller core and controls the ADC0 ADC1 startup mode conversion, speed conversion, data handling, while controlling the state of the IO interface; the data communication module, at least by a controller integrated in the microcontroller USB2.0 composition II, II microcontroller IO interface II via plug on the address, data, clock and trigger bus, and connected to an external ADC conversion on all of the microcontroller integrated control module triggers pin; said plurality of acquisition board, a plurality of a plurality of test channels distal cascaded combination process module inputs.
2、 根据权利要求1所述的多通道振动数据同步采集系统,其特征在于: 所述单片机集成控制模块还包括外扩内存,所述ADC上设有DMA, ADC 的采样率为1M, ADC0, ADC1与微控制器内核和DMA相连接,单片机壹经外部存储器接口与所述外扩内存连接,所述DMA经外部存储器接口直接写所述外扩内存。 2, according to the multi-channel data acquisition system synchronization claim 1, wherein: said SCM control module further comprises an integrated extended memory, DMA is provided on the ADC, ADC sampling rate 1M, ADC0, ADC1 is connected to the microcontroller core and DMA, microcontroller One extended memory via the external memory interface connected to the outside via the external memory interface the DMA write directly to the extended memory.
3、 根据权利要求1或2所述的多通道振动数据同步采集系统,其特征在于:所述测试通道为128个,每16个测试通道为一组,每组单独使用或通过级联任意组合使用。 3, multi-channel data according to claim 1 or claim synchronous acquisition system, characterized in that: said test channels 128, each of the 16 test as a set of channels, each used alone or in any combination of cascaded use.
4、 根据权利要求1或2所述的多通道振动数据同步采集系统,其特征在于:所述程控放大器部分由两组程控运算放大器级联而成,用于实现l, 2, 4, 8, 10, 20, 40, 80, 100, 200, 400,羅,1000, 2000, 4000, 8000, 共16种放大倍数。 4, multi-channel data according to claim 1 or claim synchronous acquisition system, characterized in that: said programmable amplifier consists of two cascaded programmable portion from the operational amplifier for achieving l, 2, 4, 8, 10, 20, 40, 80, 100, 200, 400, Romania, 1000, 2000, 4000, 8000, a total of 16 kinds of magnification.
5、 根据权利要求1或2所述的多通道振动数据同步采集系统,其特征在于:所述程控低通滤波器部分是由实现截止频率为1HZ-3KHZ的低通滤波,和实现步长为1HZ的截止频率调节的程控低通开关电容滤波器组成。 5, multi-channel data according to claim 1 or claim synchronous acquisition system, characterized in that: said programmable low-pass filter section is implemented by the cutoff frequency of 1HZ-3KHZ low pass filtering step is implemented, and 1HZ cutoff frequency adjustment of programmable low-pass switched-capacitor filter.
6、 根据权利要求1或2所述的多通道振动数据同步采集系统,其特征在于:信号切换开关部分是单刀双掷的继电器。 6, multi-channel data according to claim 1 or claim synchronous acquisition system, characterized in that: the signal switch part SPDT relays.
7、 根据权利要求1或2所述的多通道振动数据同步采集系统,其特征在于:所述地址、数据、时钟和触发总线具体是指地址和数据总线,时钟线和ADC的公共触发总线。 7, multi-channel data according to claim 1 or claim synchronous acquisition system, characterized in that: said address, data, clock, and specifically trigger bus address and data bus means, the ADC clock line and a common trigger bus.
8、 根据权利要求i所述的多通道振动数据同步采集系统,其特征在于:所述信号切换开关部分,程控放大器部分,调零部分和程控低通滤波器部分的控制是通过所述单片机集成模块实现的。 8, according to claim i of the multi-channel data acquisition system synchronization, wherein: said signal switch section, programmable amplifier section, and a control portion zeroing programmable low-pass filter is an integrated part of the microcontroller by module implementation.
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CN108107251A (en) * 2017-12-05 2018-06-01 南京海道普数据技术有限公司 Multichannel instantaneous state recorder and acquisition method
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CN105067036B (en) * 2015-08-04 2017-11-17 西安昆仑工业(集团)有限责任公司 Cannon flow field many reference amounts synchronous acquisition device and method
CN105067036A (en) * 2015-08-04 2015-11-18 西安昆仑工业(集团)有限责任公司 Artillery flow field multi-parameter synchronous acquisition device and method
CN105608879A (en) * 2015-10-15 2016-05-25 长春理工大学 Transient field signal synchronous acquisition system
CN106849951A (en) * 2017-01-24 2017-06-13 浙江大学 Low-and high-frequency signal finite time mixing acquisition method based on multipath A/D converter
CN108107251A (en) * 2017-12-05 2018-06-01 南京海道普数据技术有限公司 Multichannel instantaneous state recorder and acquisition method
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