CN208459818U - Source signal capture card - Google Patents
Source signal capture card Download PDFInfo
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- CN208459818U CN208459818U CN201821128392.XU CN201821128392U CN208459818U CN 208459818 U CN208459818 U CN 208459818U CN 201821128392 U CN201821128392 U CN 201821128392U CN 208459818 U CN208459818 U CN 208459818U
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- communication interface
- capture card
- source signal
- processor
- fpga
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Abstract
The utility model relates to a kind of source signal capture card, source signal capture card integrated processor, the first Communication Interface Module, the second Communication Interface Module, each FPGA acquisition module and each signal switching circuit；Integrated processor is separately connected each FPGA acquisition module by the first Communication Interface Module；FPGA acquisition module connects sensor by signal switching circuit；Integrated processor connects expansion equipment by the second Communication Interface Module.It when the source signal capture card of the utility model embodiment is acquired multiple signal sources, can adaptively switch acquisition signal path, avoid sampled data distortion, and there is high scalability, improve collecting efficiency.
Description
Technical field
The utility model relates to Signal Collection Technology fields, more particularly to a kind of source signal capture card.
Background technique
With the continuous development of electronic technology and computer technology, the digitlization of lathe test macro and integration degree are got over
Come higher；Largely there is acquisition, analysis, the application for controlling one, the requirement to signal acquisition in current industrial control
It is increasingly stringenter.Currently, lathe test macro is in numerically-controlled machine tool test process, it usually needs during acquisition machine tool motion
The signals such as temperature, vibration, pressure and displacement.To the quality that multiple signal sources are acquired, affects numerically-controlled machine tool and tested
Efficiency in journey.
During realization, inventor has found that at least there are the following problems in traditional technology: traditional capture card is to each
When the signal source of type is acquired, sampled data is easily caused to be distorted, influences the accuracy of lathe test.
Utility model content
Based on this, it is necessary to aiming at the problem that traditional capture card easily causes sampled data to be distorted, provide a kind of multi-source letter
Number capture card.
To achieve the goals above, the utility model embodiment provides a kind of source signal capture card, including integrated place
Manage device, the first Communication Interface Module, the second Communication Interface Module, each FPGA acquisition module and each signal switching circuit；
Integrated processor is separately connected each FPGA acquisition module by the first communication interface modules；
FPGA acquisition module connects sensor by signal switching circuit；
Integrated processor connects expansion equipment by the second communication interface modules.
Integrated processor includes arm processor and the DSP processing for connecting arm processor in one of the embodiments,
Device；
Dsp processor connects each FPGA acquisition module by the first Communication Interface Module；Arm processor passes through the second communication
Interface module connects expansion equipment.
The communication interface of the first Communication Interface Module is UPP interface in one of the embodiments,.
The communication interface of the second Communication Interface Module includes any of the following or any group in one of the embodiments,
It closes: UPP interface, Modbus serial ports and WIFI interface.
FPGA acquisition module includes FPGA processor, A/D chip and DA chip in one of the embodiments,；
FPGA processor is separately connected A/D chip, DA chip.
Signal switching circuit is analog switching circuit in one of the embodiments,；
One end of analog switching circuit connects FPGA acquisition module, and the other end connects sensor.
Sensor is voltage sensor, current sensor, pressure sensor, displacement sensing in one of the embodiments,
Device or laser sensor.
It in one of the embodiments, further include the touch screen for connecting integrated processor.
It in one of the embodiments, further include third communication interface module；Integrated processor passes through third communication interface
Component connects host computer.
Third communication interface is RS232 interface, RS485 interface, RJ45 network interface, USB interface in one of the embodiments,
Or WIFI.
A technical solution in above-mentioned technical proposal is had the following advantages and beneficial effects:
Each FPGA acquisition module is separately connected by the first Communication Interface Module based on integrated processor；FPGA acquisition module
Sensor is connected by signal switching circuit；Integrated processor connects expansion equipment by the second Communication Interface Module.Integrated place
Device is managed when FPGA acquisition module connects the first Communication Interface Module, the corresponding interface of the second Communication Interface Module is connected；FPGA
Acquisition module receives the signal switching request of integrated processor transmission, and Continuity signal switching electricity by the first Communication Interface Module
The corresponding signal path in road；The transducing signal sensed is transferred to FPGA acquisition module by signal path by sensor；FPGA
Acquisition module is transferred to integrated processor for the acquisition signal that transducing signal obtains is acquired；Integrated processor is connected in expansion equipment
When the second Communication Interface Module, the corresponding interface of the second Communication Interface Module is connected.The multi-source of various embodiments of the utility model is believed
It when number capture card is acquired multiple signal sources, can adaptively switch acquisition signal path, avoid sampled data distortion,
And there is high scalability, improve collecting efficiency.
Detailed description of the invention
Fig. 1 is the first structure diagram of source signal capture card in one embodiment；
Fig. 2 is the structural schematic diagram of integrated processor in one embodiment；
Fig. 3 is the structural schematic diagram of FPGA acquisition module in one embodiment；
Fig. 4 is the extension logical schematic of source signal capture card in one embodiment；
Fig. 5 is the application model schematic diagram of source signal capture card in one embodiment；
Fig. 6 is the second structural schematic diagram of source signal capture card in one embodiment；
Fig. 7 is the signal switching structure schematic diagram of source signal capture card in one embodiment.
Specific embodiment
The application in order to facilitate understanding is described more fully the application below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the application.But the application can realize in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to disclosure of this application.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more related listed items.
When being acquired to solve traditional capture card to multiple signal sources, it be easy to cause asking for sampled data distortion
Topic, the utility model embodiment provide a kind of source signal capture card.Fig. 1 is that the first structure of source signal capture card is illustrated
Figure.As shown in Figure 1, it may include integrated processor 110, the first Communication Interface Module 120, the second Communication Interface Module 130, each
FPGA (Field-Programmable Gate Array, field programmable gate array) acquisition module 140 and the switching of each signal
Circuit 150.
Integrated processor 110 is separately connected each FPGA acquisition module 140 by the first Communication Interface Module 120；FPGA is adopted
Collect module 140 and sensor is connected by signal switching circuit 150；Integrated processor 110 is connected by the second Communication Interface Module 130
Connect expansion equipment.
Wherein, integrated processor 110 refers to the integrated chip with multiple processing functions；Preferably, integrated processor
110 integrated at least two handle chip.First Communication Interface Module 120 may include each first communication interface.First communication interface can
It is connected between FPGA acquisition module 140 and integrated processor 110.Second Communication Interface Module 130 may include each second communication
Interface.Second communication interface is attached between expansion equipment and integrated processor.FPGA acquisition module 140 refers to being based on
The acquisition module of FPGA.Signal switching circuit 150 can be used to switching signal channel.Expansion equipment can be acquisition slave computer,
It can be capture card.Acquisition slave computer can be sensor.
Specifically, each FPGA acquisition module is separately connected by the first Communication Interface Module 120 based on integrated processor 110
140；Signal switching circuit 150 is connected between FPGA acquisition module 140 and sensor；Integrated processor 110 is logical by second
Believe that interface module 130 connects expansion equipment.FPGA acquisition module 140 can be connected to the first communication interface by artificial connection mode
On the corresponding interface of component 120.Integrated processor 110 FPGA acquisition module 140 connect the first Communication Interface Module 120 when,
The corresponding interface of the second Communication Interface Module 130 is connected.FPGA acquisition module 140 is received by the first Communication Interface Module 120
The signal switching request that integrated processor 110 transmits, and the corresponding signal path of Continuity signal switching circuit 150, so that sensing
The transducing signal sensed is transferred to FPGA acquisition module 140 by signal path by device, and then FPGA acquisition module 140 will be adopted
The acquisition signal that collection transducing signal obtains is transferred to integrated processor 110.Expansion equipment can be connected to by artificial connection mode
On the corresponding interface of second Communication Interface Module 140.Integrated processor 110 connects the second Communication Interface Module in expansion equipment
When 130, the corresponding interface of the second Communication Interface Module 130 is connected.
In a specific embodiment, as shown in Fig. 2, integrated processor include ARM (risc microcontroller,
Advanced RISC Machine) processor 220 and connect arm processor 220 DSP (Digital Signal Processing, Digital
Signal Processing) processor 210.
Dsp processor 210 connects each FPGA acquisition module by the first Communication Interface Module；Arm processor 220 passes through the
Two Communication Interface Modules connect expansion equipment.
Wherein, dsp processor 210 can be used to handle the acquisition signal of FPGA acquisition module transmission.Arm processor 220 can
For controlling expansion equipment, it is also possible to control the communication etc. with host computer.
Specifically, each FPGA acquisition module is connected by the first Communication Interface Module based on dsp processor 210；ARM processing
Device 220 connects expansion equipment by the second Communication Interface Module.Collected acquisition signal can be transferred to by FPGA acquisition module
Dsp processor 210, dsp processor 210 carries out signal processing to acquisition signal is received, and signal is transferred to by treated
Arm processor 220.Such as dsp processor 210 can carry out noise-removed filtering processing to acquisition signal, and after noise-removed filtering is handled
Signal be transferred to arm processor 220.Signal after the filtering processing of making an uproar received can be transferred to upper by arm processor 220
Machine shows signal by host computer.
It should be noted that the calculating of existing maturation can be used in arm processor and the computer program of dsp processor operation
Machine program.When carrying out noise-removed filtering processing such as dsp processor, existing noise-removed filtering processing routine can be used and realize.It can also lead to
It crosses the hardware module comprising filtering device and realizes noise-removed filtering processing.
In a specific embodiment, the communication interface of the first Communication Interface Module is UPP interface (Universal
Parallel Port, universal parallel port).The communication interface of second Communication Interface Module includes any of the following or arbitrarily
Combination: UPP interface, a kind of Modbus (communications protocol) serial ports and WIFI (Wireless-Fidelity, Wireless Fidelity) interface.
Wherein, UPP interface refers to the multi-channel high-speed parallel interface of a kind of dedicated data line and the smallest control signal.
Modbus serial ports is the serial ports based on Modbus communications protocol.WIFI interface can be used to wirelessly communicate.
Specifically, FPGA acquisition module is connected, it can be achieved that FPGA acquisition module by UPP interface based on integrated processor
Parallel communications.Integrated processor is by Modbus serial ports connection expansion equipment, it can be achieved that the serial communication to expansion equipment；Collection
At processor by WIFI interface connection expansion equipment, it can be achieved that the wireless communication to expansion equipment.Preferably, the present embodiment
The serial ports of source signal capture card has MODBUS host function, can cascade 255 support MODBUS slaves by this interface
Equipment.
In a specific embodiment, as shown in figure 3, FPGA acquisition module includes FPGA processor 310, AD
(Analog/Digital, modulus) chip 320 and DA (Digital/Analog, digital-to-analogue) chip 330；FPGA processor 310 divides
It Lian Jie not A/D chip 320, DA chip 330.
Wherein, FPGA processor 310 refers to the processor based on fpga chip.FPGA processor 310 can be used it is low at
The processor of this and low-power consumption.A/D chip 320 refers to modulus conversion chip；DA chip 330 refers to analog-digital chip.
Specifically, A/D chip 320, DA chip 330 are separately connected based on FPGA processor 310.A/D chip 320 can pass through letter
Number switching circuit connects sensor.DA chip 330 can connect host computer.A/D chip can be acquired the transducing signal of sensor
Digital signal is obtained, and by digital data transmission to FPGA processor.FPGA processor converts digital signal by DA chip
At analog signal.And show analog signal transmission to host computer, realize the real-time display to signal acquisition.
Preferably, FPGA acquisition module is inputted with 16 road AD, 8 road PWM output, and 4 road DA output and the input of 16 tunnels are defeated
I/O port out.
In a specific embodiment, signal switching circuit is analog switching circuit.
One end of analog switching circuit connects FPGA acquisition module, and the other end connects sensor.
Wherein, analog switching circuit can be single pole multiple throw circuit.
Specifically, one end based on analog switching circuit connects FPGA acquisition module, and the other end connects sensor.It is needing
When switching signal channel, FPGA acquisition module can be to analog switching circuit transmitting switch switching signal.Analog switching circuit according to
Switching signal is connected the signal path of corresponding switching signal, realizes the real-time switching control to source signal.
It should be noted that switching signal can be a kind of pwm signal, it is also possible to a kind of level signal.
Optionally, sensor is voltage sensor, current sensor, pressure sensor, displacement sensor or laser sensing
Device.
In a specific embodiment, as shown in figure 4, being the extension logical schematic of source signal capture card.This reality
The extension of function can be carried out by three kinds of modes with the source signal capture card of new embodiment.(1) pass through UPP interface bus:
Capture card is equipped with UPP interface, and after corresponding expansion equipment is inserted into the interface, main integrated processor passes through UPP interface bus
The configuration information for reading expansion equipment obtains functional parameter (such as sub-module types, ampling channel number, the sampling class of expansion equipment
Type etc.) after, the information of input register is read, extension purpose is formed；(2) pass through MODBUS serial bus: acquisition and control card
RS232 or RS485 interface supports standard MODBUS agreement, can cascade any extension for supporting this agreement by both serial ports
Equipment, host computer read the data of expansion equipment by accessing by the address of expansion equipment；(3) pass through WIFI interface: incite somebody to action this
Utility model embodiment source signal capture card as main website, adopt as slave station, source signal by the expansion equipment with WIFI function
Truck reads the data of expansion equipment in the form of WIFI.
Further, when the number of channels of capture card itself is inadequate, the acquisition of UPP Interface Expanding homologous series can both be passed through
Card, and any equipment for supporting Modbus slave can be cascaded by Modbus serial ports, slave station equipment can also be extended by WIFI,
Realize the effect of extension acquisition and control card function.
In a specific embodiment, as shown in figure 5, being the application model schematic diagram of source signal capture card.This reality
Have (1) traditional application model with the application model of new embodiment source signal capture card: the present embodiment multi-source capture card can be with
PC machine is communicated, and carries out input and output setting and information to the source signal capture card by matched upper computer control system
Reading；(2) handheld applications mode: the present embodiment source signal capture card may include 7 cun of liquid crystal displays and supplying cell group,
Can directly the transducing signal of sensor be acquired and be shown in some particular applications (such as high altitude operation, underground job)
Show, while output control can be carried out to acquisition signal；(3) numerical control communication applications mode: the present embodiment capture card can be equipped with driving
Library and integration standard MODBUS agreement, digital control system, which can be easy to implement, carries out information exchange with the source signal capture card.
In above-described embodiment, each FPGA is separately connected by the first Communication Interface Module based on integrated processor and acquires mould
Block；FPGA acquisition module connects sensor by signal switching circuit；Integrated processor is connected by the second Communication Interface Module
Expansion equipment.The second Communication Interface Module is connected when FPGA acquisition module connects the first Communication Interface Module in integrated processor
Corresponding interface；The second Communication Interface Module phase is connected when expansion equipment connects the second Communication Interface Module in integrated processor
The interface answered.And then when being acquired to multiple signal sources, it can adaptively switch acquisition signal path, avoid sampled data
Distortion, and there is high scalability, improve collecting efficiency.
It in one embodiment, further include the touch screen for connecting integrated processor.
Wherein touch screen can be liquid crystal touch screen.
Specifically, integrated processor is connected based on touch screen.The acquisition that integrated processor can transmit FPGA acquisition module
Signal is shown by touch screen.
In one embodiment, as shown in fig. 6, further including third communication interface module 660；Integrated processor 610 passes through
Third communication interface module 660 connects host computer.
Specifically, it is connected between integrated processor 610 and host computer based on third communication interface module 660.Integrated place
Device is managed when host computer connects third communication interface module, the corresponding interface of third communication interface module is connected.Integrated processor
Can receive the acquisition signal of FPGA acquisition module transmission, and will acquisition signal be transferred to by third communication interface module it is upper
Machine, and then realize host computer to the real time monitoring of acquisition signal.
Optionally, third communication interface module is RS232 (serial ports of 232 types) interface, RS485 (serial ports of 485 types) connects
Mouth, a kind of RJ45 (telecommunications outlet) network interface, USB (Universal Serial Bus, universal serial bus) interface or WIFI.On
Position machine can be communicated with integrated processor by above-mentioned any method.Further, capture card passes through handheld applications mould
Formula is in use, data preservation etc. can also be carried out by USB flash disk.
Based on the present embodiment, it is connected between integrated processor 610 and host computer based on third communication interface module 660.
The corresponding interface of third communication interface module is connected when host computer connects third communication interface module in integrated processor.It is integrated
Processor can receive the acquisition signal of FPGA acquisition module transmission, and acquisition signal is transferred to by third communication interface module
Host computer realizes host computer to the real time monitoring of acquisition signal.And then when being acquired to multiple signal sources, can adaptively it cut
Acquisition signal path is changed, sampled data distortion is avoided, and there is high scalability, improves collecting efficiency.
In a specific embodiment, as shown in fig. 7, being the signal switching structure schematic diagram of source signal capture card.
Wherein, A/D chip uses the chip of AD9238 model；DA chip uses the chip of AD9706 model.The detailed process of signal switching
Are as follows:
The input port of each A/D chip is passed by the transducing signal or current mode input for configuring receivable voltage-type input
Feel signal, can also export electric current driving needs the ICP (integrated circuits piezoelectric) of current excitation to pass
Sensor.The control terminal of analog switching circuit is connected on the output pin of FPGA processor, when connecting corresponding sensor, is led to
It crosses host computer or liquid crystal display carries out relevant configuration, analog switching circuit is switched to corresponding input mould by FPGA output signal
Sampling can be realized in formula.Preferably, since there are 3 kinds of switches to select in analog switching circuit, two switching selectors can be passed through
To realize switch.And then source signal capture card through this embodiment, it is returned based on source of the analog switching circuit to acquisition signal
Road switches over, realize same input port not only can input voltage signal, but also can input current signal, can with output driving electricity
Stream needs the sensor of current excitation to acquire.
Specifically, FPGA processor driving A/D chip (AD9238) carries out high-speed AD acquisition, drives DA chip (AD9706)
Carry out DA output.There is high speed I/O port and High-Accuracy PWM design simultaneously.Additionally by the output pin of FPGA processor to simulation
Switching circuit is controlled, ensure that each channel AD not only can sampled voltage signal, but also can sampled current signals, be provided simultaneously with
Current output capability, the sampling suitable for current excitation sensor.
It is realized it should be noted that can be controlled by level signal for FPGA processor control module switching circuit.
In a specific embodiment, the specific control process of source signal capture card are as follows:
System initialization setting is carried out to the source signal capture card of the present embodiment, after the completion of initialization, acquisition is inputted
Output is configured, and opening timing device is acquired processing.Based on different communication interfaces, acquisition mode can be divided are as follows:
New thread is opened by UPP interface, acquisition is timed based on the interface channel UPP；New thread, base are opened by Modbus serial ports
Data interaction is carried out in Modbus serial ports；New thread is opened by wireless communication, and data interaction is carried out based on Socket.In addition,
Can carry out signal output according to different application models can be to Development of CNC when such as detecting digital control system output mode
Packet configuration output；When detecting host computer output mode, host computer Socket interaction can be exported；Detecting that handheld applications are defeated
Out when mode, it can be shown and be exported by liquid crystal display.
It should be noted that the unlatching new thread in the above process can be realized based on existing computer program.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of source signal capture card, which is characterized in that including integrated processor, the first Communication Interface Module, the second communication
Interface module, each FPGA acquisition module and each signal switching circuit；
The integrated processor is separately connected each FPGA acquisition module by first communication interface modules；
The FPGA acquisition module connects sensor by the signal switching circuit；
The integrated processor connects expansion equipment by second communication interface modules.
2. source signal capture card according to claim 1, which is characterized in that the integrated processor includes ARM processing
The dsp processor of device and the connection arm processor；
The dsp processor connects each FPGA acquisition module by first Communication Interface Module；The arm processor
The expansion equipment is connected by second Communication Interface Module.
3. source signal capture card according to claim 1, which is characterized in that the communication of first Communication Interface Module
Interface is UPP interface.
4. source signal capture card according to claim 1, which is characterized in that the communication of second Communication Interface Module
Interface includes any of the following or any combination: UPP interface, Modbus serial ports and WIFI interface.
5. source signal capture card according to claim 1, which is characterized in that the FPGA acquisition module includes at FPGA
Manage device, A/D chip and DA chip；
The FPGA processor is separately connected the A/D chip, the DA chip.
6. source signal capture card according to claim 5, which is characterized in that the signal switching circuit is analog switch
Circuit；
One end of the analog switching circuit connects the FPGA acquisition module, and the other end connects the sensor.
7. source signal capture card according to claim 6, which is characterized in that the sensor is voltage sensor, electricity
Flow sensor, pressure sensor, displacement sensor or laser sensor.
8. according to claim 1 to source signal capture card described in 7 any one, which is characterized in that further include described in connection
The touch screen of integrated processor.
9. source signal capture card according to claim 8, which is characterized in that further include third communication interface module；
The integrated processor connects host computer by the third communication interface module.
10. source signal capture card according to claim 9, which is characterized in that the third communication interface connects for RS232
Mouth, RS485 interface, RJ45 network interface, USB interface or WIFI.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821128392.XU CN208459818U (en) | 2018-07-16 | 2018-07-16 | Source signal capture card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821128392.XU CN208459818U (en) | 2018-07-16 | 2018-07-16 | Source signal capture card |
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| Publication Number | Publication Date |
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| CN208459818U true CN208459818U (en) | 2019-02-01 |
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ID=65178408
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821128392.XU Expired - Fee Related CN208459818U (en) | 2018-07-16 | 2018-07-16 | Source signal capture card |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110727213A (en) * | 2018-07-16 | 2020-01-24 | 襄阳华中科技大学先进制造工程研究院 | Multisource signal acquisition card |
| CN110987026A (en) * | 2019-12-17 | 2020-04-10 | 华中科技大学 | Sensor signal acquisition system based on variable topology switch matrix |
-
2018
- 2018-07-16 CN CN201821128392.XU patent/CN208459818U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110727213A (en) * | 2018-07-16 | 2020-01-24 | 襄阳华中科技大学先进制造工程研究院 | Multisource signal acquisition card |
| CN110727213B (en) * | 2018-07-16 | 2024-05-28 | 襄阳华中科技大学先进制造工程研究院 | Multisource signal acquisition card |
| CN110987026A (en) * | 2019-12-17 | 2020-04-10 | 华中科技大学 | Sensor signal acquisition system based on variable topology switch matrix |
| CN110987026B (en) * | 2019-12-17 | 2021-11-02 | 华中科技大学 | Sensor signal acquisition system based on variable topology switch matrix |
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