CN103235537A - Synchronous high-precision dynamic signal data acquisition functional card - Google Patents
Synchronous high-precision dynamic signal data acquisition functional card Download PDFInfo
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- CN103235537A CN103235537A CN2013101337319A CN201310133731A CN103235537A CN 103235537 A CN103235537 A CN 103235537A CN 2013101337319 A CN2013101337319 A CN 2013101337319A CN 201310133731 A CN201310133731 A CN 201310133731A CN 103235537 A CN103235537 A CN 103235537A
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Abstract
The invention discloses a synchronous high-precision dynamic signal data acquisition functional card. The synchronous high-precision dynamic signal data acquisition functional card is characterized by comprising more than one analog signal input channel, a data acquisition circuit and a PXI (peripheral component interconnect extensions for instrumentation) interface circuit, wherein each of the analog signal input channel comprises an analog signal input port and a signal conditioning circuit which are connected, the signal conditioning circuits are connected with the data acquisition circuit which is connected with the PXI interface circuit, and the PXI interface circuit is connected with a PXI bus. The synchronous high-precision dynamic signal data acquisition functional card is good in stability, high in transmitting speed, capable of transmitting large volume of data, supportive to hot plug, low in cost, and easy to expand and upgrade.
Description
Technical field
The present invention relates to a kind of data acquisition function card, be specifically related to a kind of synchronous Dynamic High-accuracy signal data acquisition function card, belong to data acquisition, Digital Signal Analysis and Processing field.
Background technology
Measuring and the control system field, measurement and control bus refers to form measurement and control system is the bus that main target is developed.Since digital machine came out, various bus standards were constantly released, as PC, ISA, pci bus.Though add various I/O functional module plates in PC, ISA, pci bus system, also can form TT﹠C system, this is not the fundamental purpose of these bus standard designs.The existing bus that designs for TT﹠C system mainly contains buses such as PCI, GPIB, VXI.During actual motion, data acquisition function card connection measurement and control bus is finished information interaction with computing machine by measurement and control bus.In some observing and controlling occasion, such as in the time need monitoring the vibration situation of slewing, the acquisition function card that requires usually to connect measurement and control bus can satisfy following requirement: good stability; Transfer rate height, but transmission of large capacity data; Support hot plug; Cost is low, is easy to expand and upgrading.
But there is following defective in existing bus: gpib bus comes down to by computing machine traditional instrument function expansion and extension, and its transfer rate generally is lower than 500kB/s, can only be fit to the measurement not high to the computer data transmission rate request; Pci bus has directly been utilized the industrial computer bus of standard, and its poor stability is not supported hot-swappablely, does not have the needed bus performance of instrument; Vxi bus needs bigger investment intensity, and the cost height is not easy to expand and upgrading.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of synchronous Dynamic High-accuracy signal data acquisition function card.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
Dynamic High-accuracy signal data acquisition function card is characterized in that synchronously, comprising: the simulating signal input channel more than 1, data acquisition circuit, PXI interface circuit; Each simulating signal input channel comprises input end of analog signal mouth and signal conditioning circuit, the input end of analog signal mouth connects signal conditioning circuit, signal conditioning circuit connects data acquisition circuit, and data acquisition circuit connects the PXI interface circuit, and the PXI interface circuit connects the PXI bus.
Aforesaid synchronous Dynamic High-accuracy signal data acquisition function card is characterized in that, described input end of analog signal mouth adopts bnc connector, and bnc connector connects signal conditioning circuit.
Aforesaid synchronous Dynamic High-accuracy signal data acquisition function card, it is characterized in that, described signal conditioning circuit comprise axle shake modulate circuit, modulate circuit, selector switch, potentiometer watt shake, the input end of analog signal mouth respectively coupling shaft shake modulate circuit, modulate circuit watt shakes, the axle modulate circuit that shakes connects selector switch, the modulate circuit that watt shakes connects selector switch, and selector switch connects potentiometer, and potentiometer connects data acquisition circuit.
Aforesaid synchronous Dynamic High-accuracy signal data acquisition function card is characterized in that described data acquisition circuit comprises the A/D converter, and signal conditioning circuit connects the A/D converter, and the A/D converter connects the PXI interface circuit.
Aforesaid synchronous Dynamic High-accuracy signal data acquisition function card is characterized in that described A/D converter is AD7606.
Aforesaid synchronous Dynamic High-accuracy signal data acquisition function card, it is characterized in that, described PXI interface circuit comprises FPGA module, PCI bridging chip, described data acquisition circuit connects described FPGA module, described FPGA module connects described PCI bridging chip, and described FPGA module, PCI bridging chip connect described PXI bus respectively.
Aforesaid synchronous Dynamic High-accuracy signal data acquisition function card, it is characterized in that, described FPGA module comprises data buffer, data storage controller, central control unit, channel control unit, trigger element, described data acquisition circuit connects described data buffer, data buffer connects data storage controller, data storage controller connects central control unit, central control unit is interface channel control module and PCI bridging chip respectively, trigger element connects data buffer and data storage controller respectively, and channel control unit links to each other with selector switch.
Aforesaid synchronous Dynamic High-accuracy signal data acquisition function card is characterized in that, described trigger element link address toggle switch.
Aforesaid synchronous Dynamic High-accuracy signal data acquisition function card is characterized in that, described FPGA module adopts EP3C5E144.
Aforesaid synchronous Dynamic High-accuracy signal data acquisition function card is characterized in that, described PCI bridging chip adopts PCI9054.
Usefulness of the present invention is: synchronous Dynamic High-accuracy signal data acquisition function card good stability of the present invention, and transfer rate height, but transmission of large capacity data are supported hot plug, cost is low, is easy to expand and upgrading.
Description of drawings
Fig. 1 is the theory structure block diagram of the synchronous Dynamic High-accuracy signal data acquisition of the present invention function card;
Fig. 2 is a kind of concrete preferred enforcement figure of the synchronous Dynamic High-accuracy signal data acquisition of the present invention function card.
The implication of Reference numeral among the figure:
1, input end of analog signal mouth, 2, signal conditioning circuit, 3, data acquisition circuit, 4, the PXI interface circuit, 5, simulating signal input channel, 6, the axle modulate circuit that shakes, 7, the modulate circuit that watt shakes, 8, selector switch, 9, potentiometer, 10, A/D converter, 11, data buffer, 12, data storage controller, 13, central control unit, 14, channel control unit, 15, the address toggle switch, 16, trigger element, 17, PCI bridging chip, 18, data-carrier store, 19, the PXI bus, 20, PXI triggers line.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done concrete introduction.
As shown in Figure 1, Dynamic High-accuracy signal data acquisition function card comprises: the simulating signal input channel 5 more than 1, data acquisition circuit 3, PXI interface circuit 4 synchronously; Each simulating signal input channel 5 comprises input end of analog signal mouth 1 and signal conditioning circuit 2, input end of analog signal mouth 1 connects signal conditioning circuit 2, signal conditioning circuit 2 connects data acquisition circuit 3, data acquisition circuit 3 connects PXI interface circuit 4, and PXI interface circuit 4 connects PXI bus 19.
The present invention has adopted PXI bus 19, PXI bus 19 is that pci bus is in the expansion of instrument field, its with pci bus technical development of CompactPCI normalized definition become to be suitable for testing, measurement and the machinery of data acquisition applications, electric and software specifications, thereby formed new virtual instrument architecture.PXI bus 19 technology have not only kept pci bus higher data handling capacity, and have adopted firm European plug-in card package technique.For the needs of adaptive testing instrument have also been expanded and the similar instrument bus of vxi bus, just the star-like triggering bus as triggering bus, local bus, system reference clock and having only the vxi bus of D size to have.Its cost of products is low, is easy to expand and upgrading.Data acquisition function card of the present invention is a kind of synchronous acquisition function card based on PXI bus 19 standards, can directly be inserted in the PXI cabinet slot, can be used in signals such as test rotating machinery vibrating.
The present invention does not limit the quantity of simulating signal input channel 5, so the present invention can support the collection of multichannel analog signals.As a kind of optimal way, input is four tunnel simulating signals as shown in Figure 2.During real work, simulating signal enters from simulating signal input channel 5, be after simulating signal enters input end of analog signal mouth 1,2 pairs of simulating signals of signal conditioning circuit are carried out signal condition, then 3 pairs of data acquisition circuits through the signals of conditioning gather, the A/D conversion, just become digital signal from the signal of data acquisition circuit 3 outputs, the effect of PXI interface circuit 4 is to be responsible for the digital signal that data Acquisition Circuit 3 transmits is stored, and stored signal data is transferred to PXI bus 19.Finish the data acquisition based on PXI bus 19 thus.
Further, input end of analog signal mouth 1 of the present invention adopts bnc connector, and bnc connector connects signal conditioning circuit 2.Bnc connector is made up of a center needle, overcoat and deck.It comprises bnc connector pedestal, overcoat and probe three parts.Actual test shows adopts bnc connector can effectively guarantee the input of signal, and bnc connector has stability preferably.
Further, as a great innovation of the present invention, signal conditioning circuit 2 of the present invention comprise axle shake modulate circuit 6, modulate circuit 7, selector switch 8, potentiometer 9 watt shake, input end of analog signal mouth 1 respectively coupling shaft shake modulate circuit 6, modulate circuit 7 watt shakes, shake modulate circuit 6 of axle connects selector switch 8, the modulate circuit 7 that watt shakes connects selector switch 8, and selector switch 8 connects potentiometers 9, and potentiometer 9 connects data acquisition circuits 3.Here, the shake effect of modulate circuit 6 of axle is conditionings for signal that axle is shaken, the effect of modulate circuit 7 of watt shaking is for the conditioning to the signal that watt shakes, the axle signal that shakes can detect and get by detecting on-the-spot current vortex sensor, and watt shaking signal can be by detecting on-the-spot magnetoelectric velocity transducer detection and getting.In addition, axle of the present invention shakes modulate circuit 6 and the modulate circuit 7 that watt shakes all can be to gaining and biasing be calibrated, by calibration-gain and the conversion precision of setovering A/D converter 10 in the offset data Acquisition Circuit 3, the distortion of simulating signal input channel 5 is kept to minimum.The present invention is further the shake concrete structure of modulate circuit 6, the modulate circuit 7 that watt shakes of restrictive axes, and those skilled in the art can further select according to existing.
During actual motion, can stir selector switch 8 according to the situation that detects the scene and select different modulate circuits.Such as, if magnetoelectric velocity transducer is then stirred selector switch 8, make signal nurse one's health through the modulate circuit 7 that watt shakes.If current vortex sensor is then stirred selector switch 8, make signal nurse one's health through the axle modulate circuit 6 that shakes.Potentiometer 9 can be regulated the final output potential of each road analog signal conditioner circuit 2 among the present invention, by the adjusting of potentiometer 9, makes the analog signal conditioner circuit 2 that data acquisition circuit 3 is identified does not go the same way export, and then realizes gathering synchronously.
Because each simulating signal input channel 5 of the present invention includes signal conditioning circuit 2, therefore each simulating signal input channel 5 all can be accepted the unlike signal from the scene, such as the signal of current vortex sensor or magnetoelectric velocity transducer, and it is carried out signal condition.
Further, data acquisition circuit 3 of the present invention comprises A/D converter 10, and signal conditioning circuit 2 connects A/D converter 10, and A/D converter 10 connects PXI interface circuit 4.As shown in Figure 2, A/D converter 10 effect be to gather from the signal of signal conditioning circuit 2 inputs, the A/D conversion.The present invention does not further limit the concrete structure of A/D converter 10, can also not comprise other devices in the restricting data Acquisition Circuit 3 except A/D converter 10 yet.Those skilled in the art can be selected according to reality.But as a kind of preferred, A/D converter 10 is AD7606.AD7606 adopts the single supply working method, has filtering and high input impedance in the sheet, therefore need not to drive operational amplifier and outside bipolar power supply.Actual detected proves that it has preferable data acquisition, A/D transfer capability.
As another great preferred creation of the present invention, PXI interface circuit 4 of the present invention comprises FPGA module, PCI bridging chip 17, data acquisition circuit 3 connects the FPGA module, and the FPGA module connects PCI bridging chip 17, and FPGA module, PCI bridging chip 17 connect PXI bus 19 respectively.FPGA module, PCI bridging chip 17 cooperatively interact, and can finish to the storage of data and with the data transmission of storage and give PXI bus 19.
Here, PCI bridging chip 17 has played the effect of signal bridging, and as a kind of preferred, PCI bridging chip 17 adopts PCI9054.Actual test shows, PCI9054 can realize snapping into from data acquisition function of the present invention the PCI communication of the PXI bus 19 of PXI cabinet easily.
Further, a kind of concrete enforcement connection layout that has provided the FPGA module shown in Figure 2.The FPGA module comprises data buffer 11, data storage controller 12, central control unit 13, channel control unit 14, trigger element 16, data acquisition circuit 3 connects data buffer 11, data buffer 11 connects data storage controller 12, data storage controller 12 connects central control unit 13, central control unit 13 is interface channel control module 14 and PCI bridging chip 17 respectively, trigger element 16 connects data buffer 11 and data storage controller 12 respectively, and channel control unit 14 links to each other with selector switch.
Data storage controller 12 can also connect data-carrier store 18, and the present invention is restricting data storer 18 types not, such as, it can be the SDRAM data-carrier store 18 of 512 MB.Each passage independent parallel sampling of the present invention.The simulating signal of sending here from external sensor is sent into after through signal condition, program control filtering and is carried out analog to digital conversion the A/D converter 10, data after the conversion are sent into the data buffer 11 of FPGA inside modules, are then written in the data-carrier store 18 under data storage controller 12 controls.When the sampled data of storage in the data-carrier store 18 reaches certain memory length, the central control unit 13 of FPGA module just sends to the PXI bus by PCI bridging chip 17 and reads the sampled data look-at-me, the PXI bus just reads sampled data in the data-carrier store 18 by the PXI bus after receiving look-at-me.Further, when the sampled data of storage reaches certain memory length in the data-carrier store 18 among the present invention, reading the sampled data look-at-me just sends, this memory length can be adjusted in software and be arranged by the user, thereby make storing process more flexible, can adapt to different data-carrier store 18, be easy to expand and upgrading.
Central control unit 13 interface channel control modules 14 of the present invention, channel control unit 14 links to each other with selector switch, is used for the blocked operation of control selector switch.The benefit that adopts channel control unit 14 is to switch by shake modulate circuit 6 and the modulate circuit 7 that watt shakes of 14 pairs of axles of channel control unit, thereby makes that the use of data acquisition function card of the present invention is easier.
Be provided with trigger element 16 in the FPGA module, trigger element 16 can trigger line 20 with PXI bus 19 through PXI as shown in Figure 2 and link to each other, accept the trigger pip from PXI bus 19 then, also can accept from other local trigger pips, can trigger by external digital such as it, also can accept trigger pips such as analog signal channel, star-like triggering, guarantee the synchronous collection between the trigger port.
As further improvement, trigger element link address toggle switch of the present invention.Like this, just can switch the type of the trigger pip of input trigger element by toggle switch.Such as, data acquisition function card of the present invention is inserted on the PXI cabinet, by the groove bit address of toggle switch specified data acquisition function card, when module slot address was made as 0, module can be inserted in the star-like groove position of PXI cabinet and use as PXI cabinet culminant star type controller.At this moment, the synchronous Dynamic High-accuracy signal data acquisition function card of star-like groove position sends the triggering collection signal, the synchronous Dynamic High-accuracy signal data acquisition function card of other groove positions in the synchronous PXI cabinet, thus realize that all synchronous Dynamic High-accuracy signal data acquisition function cards can be gathered vibration signal synchronously in the whole PXI cabinet.Certainly, the present invention also can pass through toggle switch, realizes the function that for example triggers by external digital.
In the reality, as preferably, the FPGA module among the present invention can adopt EP3C5E144.
Synchronous Dynamic High-accuracy signal data acquisition function card of the present invention has been owing to adopted PXI bus 19, its good stability, and transfer rate height, but transmission of large capacity data are supported hot plug, cost is low, is easy to expand and upgrading.
More than show and described ultimate principle of the present invention, principal character and advantage.The technician of the industry should understand, and above-described embodiment does not limit the present invention in any form, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in protection scope of the present invention.
Claims (10)
1. synchronous Dynamic High-accuracy signal data acquisition function card is characterized in that, comprising: the simulating signal input channel more than 1, data acquisition circuit, PXI interface circuit; Each simulating signal input channel comprises input end of analog signal mouth and signal conditioning circuit, the input end of analog signal mouth connects signal conditioning circuit, signal conditioning circuit connects data acquisition circuit, and data acquisition circuit connects the PXI interface circuit, and the PXI interface circuit connects the PXI bus.
2. synchronous Dynamic High-accuracy signal data acquisition function card according to claim 1 is characterized in that, described input end of analog signal mouth adopts bnc connector, and bnc connector connects signal conditioning circuit.
3. synchronous Dynamic High-accuracy signal data acquisition function card according to claim 1, it is characterized in that, described signal conditioning circuit comprise axle shake modulate circuit, modulate circuit, selector switch, potentiometer watt shake, the input end of analog signal mouth respectively coupling shaft shake modulate circuit, modulate circuit watt shakes, the axle modulate circuit that shakes connects selector switch, the modulate circuit that watt shakes connects selector switch, and selector switch connects potentiometer, and potentiometer connects data acquisition circuit.
4. synchronous Dynamic High-accuracy signal data acquisition function card according to claim 1 is characterized in that described data acquisition circuit comprises the A/D converter, and signal conditioning circuit connects the A/D converter, and the A/D converter connects the PXI interface circuit.
5. synchronous Dynamic High-accuracy signal data acquisition function card according to claim 4 is characterized in that described A/D converter is AD7606.
6. synchronous Dynamic High-accuracy signal data acquisition function card according to claim 3, it is characterized in that, described PXI interface circuit comprises FPGA module, PCI bridging chip, described data acquisition circuit connects described FPGA module, described FPGA module connects described PCI bridging chip, and described FPGA module, PCI bridging chip connect described PXI bus respectively.
7. synchronous Dynamic High-accuracy signal data acquisition function card according to claim 6 is characterized in that described FPGA module comprises data buffer, data storage controller, central control unit, channel control unit, trigger element; Described data acquisition circuit connects described data buffer, data buffer connects data storage controller, data storage controller connects central control unit, central control unit is interface channel control module and PCI bridging chip respectively, trigger element connects data buffer and data storage controller respectively, and channel control unit links to each other with selector switch.
8. synchronous Dynamic High-accuracy signal data acquisition function card according to claim 7 is characterized in that, described trigger element link address toggle switch.
9. synchronous Dynamic High-accuracy signal data acquisition function card according to claim 6 is characterized in that, described FPGA module adopts EP3C5E144.
10. synchronous Dynamic High-accuracy signal data acquisition function card according to claim 6 is characterized in that, described PCI bridging chip adopts PCI9054.
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| CN2013101337319A CN103235537A (en) | 2013-04-17 | 2013-04-17 | Synchronous high-precision dynamic signal data acquisition functional card |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897056A (en) * | 2015-03-13 | 2015-09-09 | 中国科学院光电研究院 | Synchronous data acquisition and communication circuit |
| CN105548717A (en) * | 2015-12-11 | 2016-05-04 | 湖北三江航天万峰科技发展有限公司 | Electrical parameter testing device based on virtual instrument technology |
| CN105607570A (en) * | 2015-12-25 | 2016-05-25 | 清华大学 | Multi-channel signal acquisition system compatible with multiple protocols |
| CN105806406A (en) * | 2016-03-22 | 2016-07-27 | 成都普诺科技有限公司 | Network collecting and testing system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201133917Y (en) * | 2007-10-12 | 2008-10-15 | 陕西海泰电子有限责任公司 | Portable multifunctional universal tester |
| CN202058011U (en) * | 2010-11-26 | 2011-11-30 | 杭州亿恒科技有限公司 | Multiaxial multi-point vibration controller based on PXI bus |
| CN203232412U (en) * | 2013-04-17 | 2013-10-09 | 国家电网公司 | Synchronous high-accuracy dynamic signal data acquisition function card |
-
2013
- 2013-04-17 CN CN2013101337319A patent/CN103235537A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201133917Y (en) * | 2007-10-12 | 2008-10-15 | 陕西海泰电子有限责任公司 | Portable multifunctional universal tester |
| CN202058011U (en) * | 2010-11-26 | 2011-11-30 | 杭州亿恒科技有限公司 | Multiaxial multi-point vibration controller based on PXI bus |
| CN203232412U (en) * | 2013-04-17 | 2013-10-09 | 国家电网公司 | Synchronous high-accuracy dynamic signal data acquisition function card |
Non-Patent Citations (1)
| Title |
|---|
| 吴琴: "回转机械振动测试与控制***", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897056A (en) * | 2015-03-13 | 2015-09-09 | 中国科学院光电研究院 | Synchronous data acquisition and communication circuit |
| CN104897056B (en) * | 2015-03-13 | 2018-02-23 | 中国科学院光电研究院 | A kind of synchronous data collection and telecommunication circuit |
| CN105548717A (en) * | 2015-12-11 | 2016-05-04 | 湖北三江航天万峰科技发展有限公司 | Electrical parameter testing device based on virtual instrument technology |
| CN105607570A (en) * | 2015-12-25 | 2016-05-25 | 清华大学 | Multi-channel signal acquisition system compatible with multiple protocols |
| CN105607570B (en) * | 2015-12-25 | 2018-08-28 | 清华大学 | A kind of multiplexed signal sampling system of multi-protocols compatibility |
| CN105806406A (en) * | 2016-03-22 | 2016-07-27 | 成都普诺科技有限公司 | Network collecting and testing system |
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Application publication date: 20130807 |