CN106896766B - A kind of ultrasonic guided wave signals acquisition system based on FPGA - Google Patents
A kind of ultrasonic guided wave signals acquisition system based on FPGA Download PDFInfo
- Publication number
- CN106896766B CN106896766B CN201710125691.1A CN201710125691A CN106896766B CN 106896766 B CN106896766 B CN 106896766B CN 201710125691 A CN201710125691 A CN 201710125691A CN 106896766 B CN106896766 B CN 106896766B
- Authority
- CN
- China
- Prior art keywords
- control
- circuit
- acquisition
- chip
- 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 - Fee Related
Links
- 238000006243 chemical reaction Methods 0.000 claims abstract description 48
- 238000005070 sampling Methods 0.000 claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims description 18
- 230000003321 amplification Effects 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 claims description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000009659 non-destructive testing Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000002604 ultrasonography Methods 0.000 description 4
- 230000009897 systematic effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
A kind of supersonic guide-wave acquisition system based on FPGA, belongs to field of non destructive testing.The invention proposes a kind of systems for ultrasonic guided wave signals acquisition, control module is received and dispatched including programme-controlled gain circuit, AD Acquisition Circuit, DA conversion circuit, control logic module and PCIe, PCIe transmitting-receiving control module receives the control instruction sent by PCIe interface, control parameter is sent to control logic module after parsing, control logic module controls AD Acquisition Circuit respectively according to control parameter and carries out signal and the progress gain control work of DA conversion circuit.Sample frequency can be changed by sending control command according to actual condition, change sampling number and signal gain size.Control instruction transmission is carried out using PCIe coffret and place system and data are transmitted.Using the acquisition system of development, effectively ultrasonic guided wave signals can be acquired, there is certain application value.
Description
Technical field
The ultrasonic guided wave signals acquisition system based on FPGA that the present invention relates to a kind of, belongs to field of ultrasonic nondestructive detection, can
For acquiring ultrasonic guided wave signals, it can control the gain size of signal, pass through PCIe bus transfer sampled data control instruction.
Background technique
The features such as ultrasonic guided wave detection technology has detection speed fast, and detecting distance is long has in industrial ultrasonic detection field
Have a wide range of applications.Ultrasonic guided wave signals acquisition system occupies an important position in ultrasonic guided wave detecting system.Ultrasound is led
Sampling request of the wave under different detection working conditions is different, and ultrasonic guided wave signals acquisition, which needs to realize, can amplify ultrasound
The function of guided wave signals, and sampling number and sample frequency can be changed according to different working condition requirements.Also, it utilizes super
When guided Waves detection technique, since supersonic guide-wave propagation distance is remote, frequency is high, and higher sample rate and faster data is needed to pass
Defeated mode.Therefore, it is necessary to one kind can control gain, sampling number and sampling length be exclusively used in ultrasonic guided wave signals acquisition
Acquisition system, and data transmission bauds with higher.
Summary of the invention
The present invention is directed to design a kind of ultrasonic guided wave signals acquisition system, which has signal gain controllable, sampled point
The several and controllable feature of sample frequency.The system, can using PCIe data coffret transmission sampled data and control instruction
The gain size and sample frequency and sampling number of control ultrasonic guided wave signals.
To achieve the above object, the present invention uses following design scheme:
A kind of ultrasonic guided wave signals acquisition system based on FPGA, including programme-controlled gain circuit (1), AD Acquisition Circuit (2),
DA conversion circuit (3), control logic module (4) and PCIe transmitting-receiving control module (5), programme-controlled gain circuit (1) and AD acquisition electricity
Road (2) connection, AD Acquisition Circuit (2) and control logic module (4) connection, control logic module (4) and PCIe transmitting-receiving control mould
Block (5) connection, control logic module (4) are connect by DA conversion circuit (3) with programme-controlled gain circuit (1).PCIe transmitting-receiving control
The PCIe interface of system where the connection of module control signal input terminal, PCIe receive and dispatch the connection control of control module control signal output
The control signal input of logic module processed, the control signal output and data output end of control logic module are connected to DA and turn
Circuit is changed, the analog output signal of DA conversion circuit is connected to the gain control signal input terminal of programme-controlled gain circuit, program-controlled increasing
The signal input part of beneficial circuit connects supersonic guide-wave sensor, the signal output end connection AD Acquisition Circuit of programme-controlled gain circuit
Signal input part, the control signal output of the control signal input connection control logic module of AD Acquisition Circuit, AD acquisition
The data input pin of the data output end connection control logic module of circuit, the data output end of control logic module connect PCIe
The data input pin of control module is received and dispatched, the PCIe interface of system where PCIe receives and dispatches the data output end connection of control module.
Programme-controlled gain circuit includes that front end follows circuit, programmable amplifying circuit and rear end to follow circuit；Front end follows circuit
Circuit is followed by the type signal that OPA340 chip and related resistors capacitor form, it is super that front end follows the input terminal of circuit to connect
Acoustic conductance wave sensor receives the ultrasonic guided wave signals that electric signal is converted to by supersonic guide-wave sensor.Front end follows the defeated of circuit
Outlet connects the typical programmable amplifying circuit being made of AD8367 chip and related resistors capacitor, the INPT input of AD8367 chip
End connection front end follows the output end of circuit, the analog output of the GAIN input terminal connection DA conversion circuit of AD8367 chip
End controls amplification factor by the analog signal amplitude that the end GAIN of AD8367 chip inputs, and DA circuit passes through output analog voltage
Control amplification factor.The VOUT output end connection rear end of AD8367 chip follows circuit.Rear end follows circuit by AD8065 chip
Circuit is typically followed with relevant capacitor resistance composition.AD8367 in the end+IN connection programmable amplifying circuit of AD8065 chip
The VOUT output end of chip follows the signal by amplification, and the Vout output end of AD8065 chip exports the signal followed, connection
The analog input end of AD Acquisition Circuit.
AD Acquisition Circuit includes differential conversion circuit and D/A converting circuit, differential conversion circuit by LMH6550 chip with
And related resistors capacitor composition, the output end of the input terminal connection programme-controlled gain circuit of differential conversion circuit will be put by gain
Big signal is converted to differential signal, is transmitted to D/A converting circuit.D/A converting circuit is by ADC12040 chip and Xiang Guan electricity
It hinders capacitor to constitute, analog input end connects the difference output end of differential conversion circuit, the CLK input of ADC12040 chip
Connect the sampling clock output signal of control logic module, the power down control of the end the PD connection control logic module of ADC12040 chip
Signal processed, andWhat end was separately connected control logic module makes can control signal, the end the D0~D11 output of ADC12040 chip
By the digital quantity of analog-to-digital conversion, the data input pin of control logic module is connected, by control logic module control AD acquisition electricity
Road work.
DA conversion circuit is made of MAX5102 chip and related resistors capacitor, and D0~D7 input terminal of MAX5102 chip connects
Connect the gain control data output end of control logic module, the increasing of the WR# input terminal connection control logic module of MAX5102 chip
The OUTA output end of beneficial write control signal, MAX5102 chip exports the analog level after digital-to-analogue conversion, is transmitted to program-controlled increasing
The gain control input of beneficial circuit.
Control logic module is made of AD acquisition controller, trigger collection controller and programmed gain control device.AD acquisition
Controller control signal input terminal connects the control signal output of PCIe transmitting-receiving control module, the sampling touching of AD acquisition controller
It sends out input terminal and connects trigger collection controller output end, PCIe transmitting-receiving control module is connect by writing the register of AD acquisition controller
Mouth input control parameter.Trigger collection controller controls AD acquisition controller trigger collection signal.The output of AD acquisition controller is adopted
Sample clock connects the CLK input end of clock of ADC12040 chip in AD Acquisition Circuit, and AD acquisition controller exports power down control letter
Number connection AD Acquisition Circuit in ADC12040 chip PD power down control signal, AD acquisition controller export enable signal connection
ADC12040 chip in AD Acquisition CircuitEnabled control signal.The data input pin connection AD of AD acquisition controller is adopted
Data output end D0~D11 of ADC12040 chip in collector.The data output end connection PCIe transmitting-receiving of AD acquisition controller
The data input pin of control module.AD acquisition controller receives and dispatches the acquisition control parameter that control module inputs according to by PCIe, with
And it is worked by the trigger signal control signal control AD Acquisition Circuit of adopting that trigger collection controller inputs.AD acquisition controller
It exports after collected data are buffered to PCIe and receives and dispatches control module.
The control signal output of the control signal input connection PCIe transmitting-receiving control module of trigger collection controller, is adopted
Collect the trigger collection signal input part of the control signal output connection AD acquisition controller of trigger controller.PCIe transmitting-receiving control
Module is by writing the register input control parameter of trigger collection controller, and trigger collection controller is according to the control parameter of input
Trigger collection interval is calculated, and generates trigger collection signal, output to AD acquisition controller controls the work of AD acquisition controller.
The control signal output of the control signal input connection PCIe transmitting-receiving control module of programmed gain control device, journey
Control the WR# input terminal of MAX5102 chip in the write control signal output end connection DA conversion circuit of gain controller, programme-controlled gain
D0~D7 input terminal of MAX5102 chip in the data output end connection DA conversion circuit of controller.PCIe receives and dispatches control module
By the register input control parameter of programmed gain control device, programmed gain control device is write according to the generation of the control parameter of input
The data of signal and DA conversion are controlled, output to programme-controlled gain circuit controls the work of programme-controlled gain circuit.
The PCIe interface of system where PCIe receives and dispatches the control signal input connection of control module, PCIe transmitting-receiving control mould
The control signal input of the control signal output connection control logic module of block, PCIe receive and dispatch the data input of control module
The data output end of end connection control logic module, the PCIe of system where PCIe receives and dispatches the data output end connection of control module
Interface.PCIe transmitting-receiving control module receives the control instruction message sent from the PCIe interface of place system, exports after parsing
To control logic module, PCIe transmitting-receiving control module receives the data sent from control logic module, is sent to after group packet
The PCIe interface of place system.
The place system of acquisition system of the present invention sends control instruction to PCIe transmitting-receiving control mould by PCIe interface
Block parses control instruction in PCIe transmitting-receiving control module, wherein order parameter include sampling number, sample frequency,
Frequency and gain size are triggered, order parameter is sent to control logic module, AD acquisition controller in control logic module is adopted
Collection trigger controller and programmed gain control device generate control signal according to the parameter for being sent to respective register respectively.AD acquisition
Controller generates control signal according to the sampling number and sampling frequency parameters of transmission, and control AD Acquisition Circuit acquisition ultrasound is led
Wave signal.Trigger collection controller generates trigger signal, control AD acquisition controller work according to the triggering frequency parameter of transmission.
Programmed gain control device generates control signal and gain data according to the gain control parameter of transmission, control programme-controlled gain shop road into
Row work.After AD Acquisition Circuit work, collected data are transmitted to AD acquisition controller, AD acquisition controller by data into
PCIe transmitting-receiving control module is sent to after row buffering, PCIe transmitting-receiving control module sends data to data by PCIe interface
Place system.
Compared with prior art, the invention has the following beneficial effects:
1, ultrasonic guided wave signals gain controllable, gain factor 0dB~40dB, facilitates signal to magnify；
2, ultrasonic guided wave signals sampling length is variable, can facilitate the ultrasound chosen in effective range with setting length variation
Guided wave signals are acquired；
3, ultrasonic guided wave signals sample frequency is variable, can be respectively set to 40M, 20M, 10M, 5M；
4, ultrasonic guided wave signals trigger collection changeable frequency, can be with setting triggering frequency variation.
Detailed description of the invention
Fig. 1 is a kind of systematic schematic diagram of the ultrasonic guided wave signals acquisition system based on FPGA of the present invention.
Fig. 2 is a kind of fast block diagram of control logic mould of the ultrasonic guided wave signals acquisition system based on FPGA of the present invention.
Fig. 3 is a kind of programme-controlled gain circuit diagram of the ultrasonic guided wave signals acquisition system based on FPGA of the present invention.
Fig. 4 is a kind of AD Acquisition Circuit schematic diagram of the ultrasonic guided wave signals acquisition system based on FPGA of the present invention.
Fig. 5 is a kind of DA conversion circuit schematic diagram of the ultrasonic guided wave signals acquisition system based on FPGA of the present invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples, and to be descriptive be not following embodiment
It is limited, it cannot be limited the scope of protection of the present invention with this.
A kind of ultrasonic guided wave signals acquisition system based on FPGA, it is including program-controlled if Fig. 1 is systematic schematic diagram of the invention
Gain circuitry (1), AD Acquisition Circuit (2), DA conversion circuit (3), control logic module (4) and PCIe transmitting-receiving control module (5).
The PCIe interface of system, PCIe receive and dispatch control module control where the PCIe transmitting-receiving control module control signal input connection
Signal output end connects the control signal input of control logic module, the control signal output and data of control logic module
Output end is connected to DA conversion circuit, and the analog output signal of DA conversion circuit is connected to the gain control letter of programme-controlled gain circuit
The signal input part of number input terminal, programme-controlled gain circuit connects supersonic guide-wave sensor, the signal output end of programme-controlled gain circuit
Connect the signal input part of AD Acquisition Circuit, the control letter of the control signal input connection control logic module of AD Acquisition Circuit
Number output end, the data input pin of the data output end connection control logic module of AD Acquisition Circuit, the number of control logic module
According to the data input pin of output end connection PCIe transmitting-receiving control module, where the data output end that PCIe receives and dispatches control module connects
The PCIe interface of system.
Programme-controlled gain circuit includes that front end follows circuit, programmable amplifying circuit and rear end to follow circuit；Front end follows circuit
Circuit is followed by the type signal that OPA340 chip and related resistors capacitor form, it is super that front end follows the input terminal of circuit to connect
Acoustic conductance wave sensor receives the ultrasonic guided wave signals that electric signal is converted to by supersonic guide-wave sensor.Front end follows the defeated of circuit
Outlet connects the typical programmable amplifying circuit being made of AD8367 chip and related resistors capacitor, the INPT input of AD8367 chip
End connection front end follows the output end of circuit, the analog output of the GAIN input terminal connection DA conversion circuit of AD8367 chip
End controls amplification factor by the analog signal amplitude that the end GAIN of AD8367 chip inputs, and DA circuit passes through output analog voltage
Control amplification factor.The VOUT output end connection rear end of AD8367 chip follows circuit.Rear end follows circuit by AD8065 chip
Circuit is typically followed with relevant capacitor resistance composition.AD8367 in the end+IN connection programmable amplifying circuit of AD8065 chip
The VOUT output end of chip follows the signal by amplification, and the Vout output end of AD8065 chip exports the signal followed, connection
The analog input end of AD Acquisition Circuit.
AD Acquisition Circuit includes differential conversion circuit and D/A converting circuit, differential conversion circuit by LMH6550 chip with
And related resistors capacitor composition, the output end of the input terminal connection programme-controlled gain circuit of differential conversion circuit will be put by gain
Big signal is converted to differential signal, is transmitted to D/A converting circuit.D/A converting circuit is by ADC12040 chip and Xiang Guan electricity
It hinders capacitor to constitute, analog input end connects the difference output end of differential conversion circuit, the CLK input of ADC12040 chip
Connect the sampling clock output signal of control logic module, the power down control of the end the PD connection control logic module of ADC12040 chip
Signal processed, andWhat end was separately connected control logic module makes can control signal, the end the D0~D11 output of ADC12040 chip
By the digital quantity of analog-to-digital conversion, the data input pin of control logic module is connected, by control logic module control AD acquisition electricity
Road work.
DA conversion circuit is made of MAX5102 chip and related resistors capacitor, and D0~D7 input terminal of MAX5102 chip connects
Connect the gain control data output end of control logic module, the increasing of the WR# input terminal connection control logic module of MAX5102 chip
The OUTA output end of beneficial write control signal, MAX5102 chip exports the analog level after digital-to-analogue conversion, is transmitted to program-controlled increasing
The gain control input of beneficial circuit.
Control logic module is made of AD acquisition controller, trigger collection controller and programmed gain control device.
AD acquisition controller control signal input connects the control signal output of PCIe transmitting-receiving control module, AD acquisition
The sampling triggering input terminal of controller connects trigger collection controller output end, and PCIe receives and dispatches control module by writing AD acquisition control
The register interface input control parameter of device processed.Trigger collection controller controls AD acquisition controller trigger collection signal.AD is adopted
Collect the CLK input end of clock of ADC12040 chip in controller output sampling clock connection AD Acquisition Circuit, AD acquisition controller
The PD power down control signal of ADC12040 chip in electric control signal connection AD Acquisition Circuit is fallen in output, and AD acquisition controller is defeated
ADC12040 chip in enable signal connection AD Acquisition Circuit outEnabled control signal.The data of AD acquisition controller
Input terminal connects data output end D0~D11 of ADC12040 chip in AD Acquisition Circuit.The data of AD acquisition controller export
The data input pin of end connection PCIe transmitting-receiving control module.AD acquisition controller is according to adopting by PCIe transmitting-receiving control module input
Collect control parameter, and work is carried out by the trigger signal control signal control AD Acquisition Circuit of adopting that trigger collection controller inputs
Make.AD acquisition controller exports to PCIe after being buffered collected data and receives and dispatches control module.
When it is implemented, designing AD acquisition controller according to the working sequence of ADC12040 chip, core code includes
Acquisition control state machine, sampling number counter and sample frequency generator.Acquisition state controller includes two states: etc.
State to be collected and acquisition state, when waiting acquisition state, the PD power down control of output control signal connection ADC12040 chip
Input terminal is high level, output control signal connection ADC12040 chipEnabled control signal is high level, at this time
A/D chip does not work, and does not acquire signal.When acquisition state, the PD power down control of output control signal connection ADC12040 chip is defeated
Entering end is low level, output control signal connection ADC12040 chipEnabled control signal is low level, at this time AD
Chip operation starts to acquire data.
Sampling number counter carries out sample count according to the control parameter of input, until count value reaches setting value time control
Acquisition control state machine processed enters waiting acquisition state.
It is 40MHz, 20MHz, 10MHz, 5MHz that sample frequency generator, which mainly utilizes four counters to generate frequency respectively,
Clock signal, corresponding sampled clock signal is exported according to the control parameter of input, the sampled clock signal of output connects AD
The CLK input end of clock of ADC12040 chip in sample circuit.
The control signal output of the control signal input connection PCIe transmitting-receiving control module of trigger collection controller, is adopted
Collect the trigger collection signal input part of the control signal output connection AD acquisition controller of trigger controller.PCIe transmitting-receiving control
Module is by writing the register input control parameter of trigger collection controller, and trigger collection controller is according to the control parameter of input
Trigger collection interval is calculated, and generates trigger collection signal, output to AD acquisition controller controls the work of AD acquisition controller.
When it is implemented, trigger collection controller core is a counter, counter according to the control parameter of input into
Row counts, and when counting reaches setting value, generates sampling trigger signal, exports to AD acquisition controller, make AD acquisition controller
Into acquisition state.
The control signal output of the control signal input connection PCIe transmitting-receiving control module of programmed gain control device, journey
Control the WR# input terminal of MAX5102 chip in the write control signal output end connection DA conversion circuit of gain controller, programme-controlled gain
D0~D7 input terminal of MAX5102 chip in the data output end connection DA conversion circuit of controller.PCIe receives and dispatches control module
By the register input control parameter of programmed gain control device, programmed gain control device is write according to the generation of the control parameter of input
The data of signal and DA conversion are controlled, output to programme-controlled gain circuit controls the work of programme-controlled gain circuit.
When it is implemented, programmed gain control device according to the chip operation timing of MAX5102 chip in DA conversion circuit into
Row control is controlled according to the gain control parameter of input by D0~D7 pin of gain control word write-in MAX5102 chip
WR# pin completes write operation.
The PCIe interface of system where PCIe receives and dispatches the control signal input connection of control module, PCIe transmitting-receiving control mould
The control signal input of the control signal output connection control logic module of block, PCIe receive and dispatch the data input of control module
The data output end of end connection control logic module, the PCIe of system where PCIe receives and dispatches the data output end connection of control module
Interface.PCIe transmitting-receiving control module receives the control instruction message sent from the PCIe interface of place system, exports after parsing
To control logic module, PCIe transmitting-receiving control module receives the data sent from control logic module, is sent to after group packet
The PCIe interface of place system.
Claims (4)
1. a kind of ultrasonic guided wave signals acquisition system based on FPGA, it is characterised in that: the system includes programme-controlled gain circuit
(1), AD Acquisition Circuit (2), DA conversion circuit (3), control logic module (4) and PCIe transmitting-receiving control module (5), programme-controlled gain
Circuit (1) and AD Acquisition Circuit (2) connection, AD Acquisition Circuit (2) and control logic module (4) connection, control logic module (4)
With PCIe transmitting-receiving control module (5) connection, control logic module (4) is connected by DA conversion circuit (3) and programme-controlled gain circuit (1)
It connects；The PCIe interface of system, PCIe receive and dispatch control module where the PCIe transmitting-receiving control module control signal input connection
Control signal output connect control logic module control signal input, the control signal output of control logic module and
Data output end is connected to the control signal and data input pin of DA conversion circuit, and the analog output signal of DA conversion circuit connects
It is connected to the gain control signal input terminal of programme-controlled gain circuit, the signal input part connection supersonic guide-wave sensing of programme-controlled gain circuit
Device, the signal input part of the signal output end connection AD Acquisition Circuit of programme-controlled gain circuit, the control signal of AD Acquisition Circuit are defeated
Enter the control signal output of end connection control logic module, the data output end connection control logic module of AD Acquisition Circuit
Data input pin, the data input pin of the data output end connection PCIe transmitting-receiving control module of control logic module, PCIe transmitting-receiving
The PCIe interface of system where the data output end connection of control module；
The control logic module is made of AD acquisition controller, trigger collection controller and programmed gain control device；AD acquisition
Controller control signal input terminal connects the control signal output of PCIe transmitting-receiving control module, the sampling touching of AD acquisition controller
It sends out input terminal and connects trigger collection controller output end, PCIe transmitting-receiving control module is connect by writing the register of AD acquisition controller
Mouth input control parameter；Trigger collection controller controls AD acquisition controller trigger collection signal；The output of AD acquisition controller is adopted
Sample clock connects the CLK input end of clock of ADC12040 chip in AD Acquisition Circuit, and AD acquisition controller exports power down control letter
Number connection AD Acquisition Circuit in ADC12040 chip PD power down control signal, AD acquisition controller export enable signal connection
ADC12040 chip in AD Acquisition CircuitEnabled control signal；The data input pin connection AD of AD acquisition controller is adopted
Data output end D0~D11 of ADC12040 chip in collector；The data output end connection PCIe transmitting-receiving of AD acquisition controller
The data input pin of control module；AD acquisition controller receives and dispatches the acquisition control parameter that control module inputs according to by PCIe, with
And it is worked by the trigger signal control signal control AD Acquisition Circuit of adopting that trigger collection controller inputs；AD acquisition controller
It exports after collected data are buffered to PCIe and receives and dispatches control module；
The control signal output of the control signal input connection PCIe transmitting-receiving control module of trigger collection controller, acquisition touching
Send out the trigger collection signal input part of the control signal output connection AD acquisition controller of controller；PCIe receives and dispatches control module
By writing the register input control parameter of trigger collection controller, trigger collection controller is calculated according to the control parameter of input
Trigger collection interval, and trigger collection signal is generated, output to AD acquisition controller controls the work of AD acquisition controller；
The control signal output of the control signal input connection PCIe transmitting-receiving control module of programmed gain control device, program-controlled increasing
The WR# input terminal of MAX5102 chip, programmed gain control in the write control signal output end connection DA conversion circuit of beneficial controller
D0~D7 input terminal of MAX5102 chip in the data output end connection DA conversion circuit of device；PCIe transmitting-receiving control module passes through
The register input control parameter of programmed gain control device, programmed gain control device write control according to the generation of the control parameter of input
The data of signal and DA conversion, output to programme-controlled gain circuit control the work of programme-controlled gain circuit.
2. a kind of ultrasonic guided wave signals acquisition system based on FPGA according to claim 1, it is characterised in that: the journey
Controlling gain circuitry includes that front end follows circuit, programmable amplifying circuit and rear end to follow circuit；Front end follows circuit by OPA340 core
The type signal of piece and related resistors capacitor composition follows circuit, and front end follows the input terminal of circuit to connect supersonic guide-wave sensing
Device receives the ultrasonic guided wave signals that electric signal is converted to by supersonic guide-wave sensor；Front end follow circuit output end connect by
The INPT input terminal of the typical programmable amplifying circuit of AD8367 chip and related resistors capacitor composition, AD8367 chip connects front end
The output end of circuit is followed, the GAIN input terminal of AD8367 chip is gain control signal input terminal；The VOUT of AD8367 chip
Output end connection rear end follows circuit；Rear end follows circuit to be made of AD8065 chip and relevant capacitor resistance and typically follows electricity
Road；The VOUT output end of AD8367 chip in the end+IN connection programmable amplifying circuit of AD8065 chip, follows by amplification
The Vout output end of signal, AD8065 chip is signal output end, exports signal to be collected.
3. a kind of ultrasonic guided wave signals acquisition system based on FPGA according to claim 1, it is characterised in that: the AD
Acquisition Circuit includes differential conversion circuit and analog to digital conversion circuit, and differential conversion circuit is by LMH6550 chip and related resistors
The input terminal of capacitor composition, differential conversion circuit is signal input part, and input signal is converted to differential signal, is transmitted to modulus
Conversion circuit；Analog to digital conversion circuit is made of ADC12040 chip and related resistors capacitor, and analog input end connects difference
The sampling clock of the difference output end of conversion circuit, the CLK input connection control logic module of ADC12040 chip exports letter
Number, the PD input terminal of ADC12040 chip andInput terminal is control signal input, and D0~D11 of ADC12040 chip is defeated
Outlet is data output end, exports the digital quantity Jing Guo analog-to-digital conversion.
4. a kind of ultrasonic guided wave signals acquisition system based on FPGA according to claim 1, it is characterised in that: the DA
Conversion circuit is made of MAX5102 chip and related resistors capacitor, and D0~D7 input terminal of MAX5102 chip is data input
End, the WR# input terminal of MAX5102 chip are control input signal, and the OUTA output end of MAX5102 chip is analog signal output
End.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710125691.1A CN106896766B (en) | 2017-03-05 | 2017-03-05 | A kind of ultrasonic guided wave signals acquisition system based on FPGA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710125691.1A CN106896766B (en) | 2017-03-05 | 2017-03-05 | A kind of ultrasonic guided wave signals acquisition system based on FPGA |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106896766A CN106896766A (en) | 2017-06-27 |
| CN106896766B true CN106896766B (en) | 2019-03-05 |
Family
ID=59185759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710125691.1A Expired - Fee Related CN106896766B (en) | 2017-03-05 | 2017-03-05 | A kind of ultrasonic guided wave signals acquisition system based on FPGA |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106896766B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008993A (en) * | 2021-03-01 | 2021-06-22 | 南京航空航天大学 | Ultrasonic guided wave attenuation compensation device and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101185580A (en) * | 2006-11-15 | 2008-05-28 | 深圳迈瑞生物医疗电子股份有限公司 | Method and apparatus for gathering ultrasonic diagnosis system high-speed radio-frequency echo wave data |
| KR101189907B1 (en) * | 2010-07-29 | 2012-10-15 | 한국수력원자력 주식회사 | Automated Ultrasonic Digital Board for Buffering and Transmission of Multi Channel, High Speed ADC Data |
| CN102551810B (en) * | 2012-03-09 | 2014-03-12 | 华南师范大学 | Multichannel synchronous real-time digitalized photoacoustic imaging device and method |
| CN104856726B (en) * | 2015-06-04 | 2017-05-24 | 上海爱声生物医疗科技有限公司 | Novel intravascular ultrasonic imaging capture card and ultrasonic imaging system |
| CN205788174U (en) * | 2016-06-12 | 2016-12-07 | 无锡海鹰电子医疗系统有限公司 | A kind of diasonograph based on USB3.0 and FPGA acquisition controlling |
-
2017
- 2017-03-05 CN CN201710125691.1A patent/CN106896766B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106896766A (en) | 2017-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201489356U (en) | Servo driver of alternating current asynchronous motor | |
| CN202510111U (en) | Multi-channel data acquisition circuit applied to array induction logging instrument | |
| CN102116246A (en) | Device, system and method for monitoring efficiency of hydro-electric generating set | |
| CN204087204U (en) | Based on the Large Copacity multi-channel synchronous high-speed data acquisition card of FPGA | |
| CN202057414U (en) | Mining noise sensor | |
| CN106896766B (en) | A kind of ultrasonic guided wave signals acquisition system based on FPGA | |
| CN201540469U (en) | Data Acquisition Device | |
| CN110048718A (en) | A kind of data collecting card | |
| CN202904029U (en) | Low-power nuclear signal pulse amplitude analyzer | |
| CN2757310Y (en) | Mixed power electronic breaker observe and control device | |
| CN104535176A (en) | Vibration and noise detection apparatus and method | |
| CN104678122A (en) | Method for identifying rotation speed high teeth based on multi-point bubbling method | |
| CN107966207B (en) | On-load tap changer vibration signal acquisition device and analysis system | |
| CN104897249A (en) | Ultrasonic flow measuring test device and measuring method | |
| CN201302717Y (en) | High precision sensor signal collector | |
| CN102645554B (en) | High-precision time difference capturing and measuring device having bidirectional identification function | |
| CN108918937A (en) | A kind of general card oscillograph based on pci interface | |
| CN107942913A (en) | A kind of multichannel vibrational state parameter acquisition control sequential device | |
| CN203732203U (en) | ARM-based wheel dynamic balance measuring system | |
| CN203720588U (en) | Signal acquisition device | |
| CN208872797U (en) | A kind of general card oscillograph and system based on pci interface | |
| CN201589804U (en) | A digital oscilloscope with digital-to-analog conversion function | |
| CN202026297U (en) | Intelligent expansion interface of double-pulse signal generator | |
| CN101738332A (en) | State information acquiring device of small satellite executing mechanism | |
| CN221860865U (en) | A passive alarm switch and alarm device for 4-20mA loop |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190305 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |