CN203232412U - Synchronous high-accuracy dynamic signal data acquisition function card - Google Patents
Synchronous high-accuracy dynamic signal data acquisition function card Download PDFInfo
- Publication number
- CN203232412U CN203232412U CN 201320194430 CN201320194430U CN203232412U CN 203232412 U CN203232412 U CN 203232412U CN 201320194430 CN201320194430 CN 201320194430 CN 201320194430 U CN201320194430 U CN 201320194430U CN 203232412 U CN203232412 U CN 203232412U
- Authority
- CN
- China
- Prior art keywords
- data acquisition
- circuit
- connects
- function card
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses a synchronous high-accuracy dynamic signal data acquisition function card which is characterized by comprising more than one analog signal input channel, a data acquisition circuit and a PXI interface circuit, each analog signal input channel comprises an analog signal input port and a signal conditioning circuit, the analog signal input ports are connected with the signal conditioning circuits, the signal conditioning circuits are connected with the data acquisition circuit, the data acquisition circuit is connected with the PXI interface circuit, and the PXI interface circuit is connected with a PXI bus. The synchronous high-accuracy dynamic signal data acquisition function card is fine in stability, high in transmission rate, low in cost and easy to expand and upgrade, can transmit large volume data, and supports hot plug.
Description
Technical field
The utility model relates to a kind of data acquisition function card, is specifically related to a kind of synchronous Dynamic High-accuracy signal data acquisition function card, belongs 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 purpose of this utility model is to provide a kind of synchronous Dynamic High-accuracy signal data acquisition function card.
In order to realize above-mentioned target, the utility model 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 utility model is: synchronous Dynamic High-accuracy signal data acquisition function card good stability of the present utility model, 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 utility model function card;
Fig. 2 is a kind of concrete preferred enforcement figure of the synchronous Dynamic High-accuracy signal data acquisition of the utility model 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 utility model 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 utility model 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 utility model 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 utility model does not limit the quantity of simulating signal input channel 5, so the utility model can be supported 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 utility model 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 utility model, signal conditioning circuit 2 of the present utility model 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 utility model 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 utility model 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 in the utility model, 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 utility model 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 utility model 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 utility model 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 utility model, PXI interface circuit 4 of the present utility model comprises FPGA module, PCI bridging chip 17, data acquisition circuit 3 connects the FPGA module, 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 the utility model data acquisition function 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 utility model 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 utility model.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 in the utility model, 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 utility model, 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 utility model 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 utility model.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 utility model 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 utility model also can pass through toggle switch, realizes the function that for example triggers by external digital.
In the reality, as preferably, the FPGA module in the utility model can adopt EP3C5E144.
Synchronous Dynamic High-accuracy signal data acquisition function card of the present utility model 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 utility model, principal character and advantage.The technician of the industry should understand, and above-described embodiment does not limit the utility model in any form, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in the protection domain of the present utility model.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320194430 CN203232412U (en) | 2013-04-17 | 2013-04-17 | Synchronous high-accuracy dynamic signal data acquisition function card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320194430 CN203232412U (en) | 2013-04-17 | 2013-04-17 | Synchronous high-accuracy dynamic signal data acquisition function card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203232412U true CN203232412U (en) | 2013-10-09 |
Family
ID=49288523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320194430 Expired - Lifetime CN203232412U (en) | 2013-04-17 | 2013-04-17 | Synchronous high-accuracy dynamic signal data acquisition function card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203232412U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235537A (en) * | 2013-04-17 | 2013-08-07 | 国家电网公司 | Synchronous high-precision dynamic signal data acquisition functional card |
| CN103678080A (en) * | 2013-12-16 | 2014-03-26 | 中国电子科技集团公司第四十一研究所 | Backboard device and control method based on PXI architecture |
-
2013
- 2013-04-17 CN CN 201320194430 patent/CN203232412U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235537A (en) * | 2013-04-17 | 2013-08-07 | 国家电网公司 | Synchronous high-precision dynamic signal data acquisition functional card |
| CN103678080A (en) * | 2013-12-16 | 2014-03-26 | 中国电子科技集团公司第四十一研究所 | Backboard device and control method based on PXI architecture |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200033408A1 (en) | Method and system for acquisition of test data | |
| CN106248200B (en) | A kind of wireless data acquisition system of engineering structure fundamental frequency test | |
| CN103235537A (en) | Synchronous high-precision dynamic signal data acquisition functional card | |
| CN203232412U (en) | Synchronous high-accuracy dynamic signal data acquisition function card | |
| CN101719169A (en) | Three-in-one USB data acquisition card | |
| CN207181570U (en) | A kind of electronic surveying integrated system | |
| CN101998135A (en) | System for collecting and playing mobile television signal and control method | |
| CN100504723C (en) | USB data acquisition apparatus for power supply | |
| CN104912874A (en) | Testing and recording instrument for hydraulic system | |
| CN205228671U (en) | Temperature measuring apparatus | |
| CN107942175A (en) | A kind of data collector Auto-Test System | |
| CN205049265U (en) | Multichannel sensor real -time detection system | |
| CN204557139U (en) | A kind of data collecting card | |
| CN101625704B (en) | Analog signal data compression processor | |
| CN207529166U (en) | A kind of environment cloud surveys the sensor data acquisition circuit of instrument | |
| JP6276330B2 (en) | Multi-analysis system and multi-analyzer | |
| CN207832962U (en) | test card and test system | |
| CN201167331Y (en) | Interface case for real time monitoring bidirectional data transmission | |
| CN202421267U (en) | Digital multimeter based on wifi wireless transmission | |
| CN204755474U (en) | Hydraulic system test record appearance | |
| CN205982553U (en) | Detection apparatus for digital circuit board | |
| CN201004222Y (en) | Lead bundle detection device based on computer bus interface | |
| CN110144980A (en) | A kind of pile detection instrument having wireless data export function | |
| CN213122970U (en) | Data acquisition and processing system supporting embedded USB communication | |
| CN204336889U (en) | Portable body balance detection instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131009 |