CN209541775U - It is a kind of for detecting the Vltrasonic device of liquid multi-parameter - Google Patents
It is a kind of for detecting the Vltrasonic device of liquid multi-parameter Download PDFInfo
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- CN209541775U CN209541775U CN201920360595.XU CN201920360595U CN209541775U CN 209541775 U CN209541775 U CN 209541775U CN 201920360595 U CN201920360595 U CN 201920360595U CN 209541775 U CN209541775 U CN 209541775U
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Abstract
The utility model discloses a kind of for detecting the Vltrasonic device of liquid multi-parameter, including microprocessor, pulse excitation module, echo signal processing module, piezoelectric chip and power module；The input of pulse excitation module terminates microprocessor, output termination piezoelectric chip；The input of echo signal processing module terminates piezoelectric chip, output termination microprocessor；Power module passes through microprocessor power supply；Microprocessor driven pulse excitation module provides high pressure pulse to piezoelectric chip, and piezoelectric chip is occurred piezoelectric effect by high pressure single pulse excitation and generates ultrasonic wave, and converts electric signal for each secondary reflection ultrasonic echo；Electric signal processing is fed back to microprocessor after envelope signal by echo signal processing module.The utility model passes through the integrally viscosity of measurement liquid, density, influencing each other for above-mentioned parameter is had modified, the measurement accuracy of each parameter is effectively increased, improves detection efficiency, with very strong practicability and wide applicability, it is particularly suitable for on-line real-time measuremen.
Description
Technical field
The present invention relates to a kind of detection devices, and in particular to and it is a kind of for detecting the Vltrasonic device of liquid multi-parameter, belong to
Ultrasonic detecting technology field.
Background technique
One of the important physical parameter of viscosity, density, temperature as liquid, measurement such parameter of liquid petrochemical industry,
The industries such as papermaking, food processing and textile printing and dyeing are widely used.For example, for each h type engine h, the density of machine oil is sticked
The variation of degree will cause machine oil performance decline, it is big so as to cause engine luggine, revolving speed is abnormal, specific oil consumption excessively it is high therefore
Barrier.
Traditional liquid viscosity, density, thermometry have developed more mature, but the inspection based on conventional method
Survey device be primarily present measurement accuracy is bad, can not implement on-line monitoring the problems such as, and the viscosity of liquid, density, temperature join
Number influences each other.
Therefore, a kind of ultrasonic liquid Multi-parameter detection device disclosed by the utility model integrated can detect the glutinous of liquid
Degree, density, temperature can be improved the measurement accuracy of parameters by measuring multi-parameter simultaneously, and be suitable for online inspection in real time
It surveys.
Summary of the invention
To solve the deficiencies in the prior art, the purpose of the present invention is to provide the one of a kind of ultrasound detection liquid many kinds of parameters
Body makeup is set.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
It is a kind of for detecting at the Vltrasonic device of liquid multi-parameter, including microprocessor, pulse excitation module, echo-signal
Manage module, piezoelectric chip and power module；
The microprocessor, for controlling detection procedure and processing data；
The input of the pulse excitation module terminates microprocessor, output termination piezoelectric chip；Echo signal processing module
Input terminate piezoelectric chip, output termination microprocessor；Power module passes through microprocessor power supply；
The microprocessor driven pulse excitation module provides high pressure pulse to piezoelectric chip, and piezoelectric chip is by high pressure list
Pulse excitation occurs piezoelectric effect and generates ultrasonic wave, and converts electric signal for each secondary reflection ultrasonic echo；Echo signal processing
Electric signal processing is fed back to microprocessor after envelope signal by module.
The front end of above-mentioned piezoelectric chip is equipped with sound reflecting baffle, the ultrasonic wave generated for focusing reflection piezoelectric chip；
The sound reflecting baffle includes the round tube that front end is equipped with elliposoidal baffle, and, the top of round tube is equipped with several water conservancy diversion
Hole.
Above-mentioned pulse excitation module, including concatenated high-voltage pulse energizing circuit, isolation/driving circuit；
The input of the isolation/driving circuit terminates microprocessor, and output termination pressure pulse excitation circuit presses pulse excitation
The output of circuit terminates piezoelectric chip；
Power module is respectively high-voltage pulse energizing circuit, isolation/drive circuitry by protection circuit.
Above-mentioned echo signal processing module, including sequentially connected echo capture circuit, echo filter amplification circuit, echo
Envelope detection circuit；
The input of the echo capture circuit terminates piezoelectric chip；
The output end of echo envelope detecting circuit connects microprocessor by single echo lock circuit, and processor passes through A/D
Sample circuit takes back wave envelope detecting circuit；
The echo capture circuit captures the electric signal that each secondary ultrasonic echo generates on piezoelectric chip；
The echo filter amplification circuit is filtered to each secondary ultrasonic echo and/or enhanced processing；
To treated, signal carries out envelope detection to the echo envelope detecting circuit；
The single echo lock circuit carries out the locking of single echo to echo envelope detecting circuit treated signal,
And locking signal is sent to microprocessor；Control A/D sample circuit examines echo envelope after microprocessor receives locking signal
The signal that wave circuit obtains carries out A/D sampling.
Above-mentioned power module includes power management module, battery；
The battery is microprocessor and pulse excitation module for power supply by power management module.
Above-mentioned battery is rechargeable battery, is equipped with matched charging circuit.
The above-mentioned external display module of microprocessor, for showing real-time detector data.
Above-mentioned microprocessor is equipped with external communication interface, including USB, LAN, GPIB, RS-232, for providing PERCOM peripheral communication
Service.
Above-mentioned microprocessor is connect with temperature sensor, is used for real-time monitoring testing liquid temperature.
The invention has the beneficial effects that:
Of the invention a kind of for detecting the Vltrasonic device of liquid multi-parameter, viscosity, density, temperature parameter based on liquid
Interactional principle, by converting electric signal for the back wave for passing through testing liquid, and most by each secondary echo-signal
Big envelope range value finds out the attenuation coefficient of each secondary amplitude, reaches time average, temperature sensor survey in conjunction with multiecho signal
The temperature obtained, and then the viscosity of testing liquid, density are calculated simultaneously, influencing each other for above-mentioned parameter is had modified, so that measurement
Result it is more accurate.
Supersonic detection device of the invention effectively increases each parameter by integrally measuring the multi-parameter of liquid
Measurement accuracy improves detection efficiency, has very strong practicability and wide applicability, is particularly suitable for online inspection in real time
It surveys.
Detailed description of the invention
Fig. 1 is of the invention a kind of for detecting the structural schematic diagram of the Vltrasonic device of liquid multi-parameter.
Fig. 2 is the circuit structure schematic diagram of pulse excitation module of the invention.
Fig. 3 is the circuit structure schematic diagram of echo signal processing module of the invention.
Attached meaning marked in the figure is as follows: 1, power module, 2, microprocessor, 3, external communication interface, 4, display mould
Block, 5, temperature sensor, 6, pulse excitation module, 60, isolation and driving circuit, 61, protection circuit, 62, high-voltage pulse excitation
Circuit, 7, echo signal processing module, 70, A/D sample circuit, 71, single echo lock circuit, 72, echo envelope detection electricity
Road, 73, echo filter amplification circuit, 74, echo capture circuit, 8, piezoelectric chip, 9, sound reflecting baffle, 10, charging circuit,
11, rechargeable battery, 13, power management module.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
A kind of ultrasonic liquid Multi-parameter detection device of the utility model as shown in Figure 1 includes: power module 1, micro process
Device 2, external communication interface 3, display module 4, temperature sensor 5, pulse excitation module 6, echo signal processing module 7, piezoelectricity
Chip 8, sound reflecting baffle 9.
Power module 1 includes charging circuit 10, rechargeable battery 11 and power management module 12.Wherein, rechargeable battery 11 can
To be the small-sized electrochemical cell such as lithium battery；Charging circuit 10 is after rechargeable battery 11 charges, and rechargeable battery 11 is via connected to it
Power management module 12 is powered to microprocessor 2 and protection circuit 61；Charging circuit 10 can also directly for microprocessor 2 and be protected
Protection circuit 61 is powered.
Microprocessor 2 respectively with power management module 12, be isolated and driving circuit 60, A/D sample circuit 70, single echo
Lock-in circuit 71, temperature sensor 5, external communication interface 3, display module 4 are connected, control and number for detection procedure
According to processing.
External communication interface 3 is communicated for the external equipments such as microprocessor 2 and PC machine.
Display module 4 is used to receive the signal of microprocessor 2 and shows testing result.
Temperature sensor 5 is close to the setting of piezoelectric chip rear end for detecting testing liquid temperature, the temperature sensor.
Pulse excitation module 6 includes isolation and driving circuit 60, protection circuit 61 and high-voltage pulse energizing circuit 62.Its
In, the input port of isolation and driving circuit 60 is connected with microprocessor 2, output port and 62 phase of high-voltage pulse energizing circuit
Even, the control that microprocessor 2 excites high-voltage pulse is realized with this；Protect circuit 61 respectively at high-voltage pulse energizing circuit 62,
Isolation and driving circuit 60 prevent circuit overloads to 7 He of echo signal processing module to realize the protection to whole device circuit
Other circuits such as microprocessor 2 damage；High-voltage pulse energizing circuit 62 is in isolation and driving circuit 60 and protection circuit 61
Collective effect under, output high-voltage pulse is to connected piezoelectric chip 8.
As shown in Fig. 2, being pulse excitation modular circuit structure diagram of the invention；Isolation and driving circuit 60 are mainly adopted
It is constituted with triode and surrounding discrete component；High-voltage pulse energizing circuit 62 is mainly by the switch of metal-oxide-semiconductor in pulse transformer
Secondary generates sub-high pressure pulse, and high pressure pulse is generated after pulse transformer amplifies.
Piezoelectric chip 8 can be occurred piezoelectric effect by high pressure single pulse excitation and generate ultrasonic wave, can also be by each secondary reflection ultrasound
Echo is converted into electric signal；The high pressure single pulse excitation that piezoelectric chip 8 is generated by connected high-voltage pulse exciting circuit 62 generates
One group of ultrasonic wave simultaneously encounters the generation focusing total reflection of reflecting curtain 9 after fixed range propagation.
Sound reflecting baffle 9 includes round tube and elliposoidal baffle, and round tube is connected with piezoelectric chip 8 and elliposoidal baffle, circle
Pipe is also with several oval deflector holes.
Echo signal processing module 7 includes A/D sample circuit 70, single echo lock circuit 71, echo envelope detection electricity
Road 72, echo filter amplification circuit 73 and echo capture circuit 74.
Wherein, echo capture circuit 74 captures the electric signal being converted on piezoelectric chip by each secondary ultrasonic echo；Echo filter
Wave amplifying circuit 73 is filtered to each secondary ultrasonic echo and/or enhanced processing；Echo envelope detecting circuit 72 is to treated
Signal carries out envelope detection, and the signal after detection can effectively reduce the sample frequency of ultrasonic echo to reduce the same of calculated load
When retain detection needed for key message；Single echo lock circuit 71 is to treated the signal of echo envelope detecting circuit 72
The locking of single echo is carried out, and locking signal is sent to connected microprocessor 2；After microprocessor 2 receives locking signal
The connected A/D sample circuit 70 of control carries out A/D sampling to the signal that echo envelope detecting circuit 72 obtains.
As shown in figure 3, being the circuit structure schematic diagram of echo signal processing module of the invention；Echo captures circuit 74 by two
A clamp diode composition, filters out high-voltage pulse and captures echo-signal；Rear class is mainly by operational amplifier and the discrete member of surrounding
Device forms echo filter amplification circuit 73, is filtered to echo-signal and enhanced processing；Single echo lock circuit 71 by
Voltage comparator composition, and locking signal is transmitted to microprocessor 2.
Further, microprocessor 2 finds out the attenuation coefficient of each secondary amplitude by the largest enveloping amplitude of each secondary echo-signal,
Calculate multiecho signal reaches time average；The testing liquid temperature data that temperature sensor 5 measures；
Above-mentioned attenuation coefficient, arrival time mean value, temperature data are substituted into mathematical model, the glutinous of testing liquid is calculated
Degree, density.
Specifically, the temperature data for the testing liquid that the reception of microprocessor 2 temperature sensor 5 measures in primary test is
T；Microprocessor 2 calculate multiecho signal reach time average t after, t is substituted into formula by microprocessor 2:
In formula, L is the length of sound reflecting baffle 9, and K is coefficient constant.
The attenuation coefficient J of echo-signal largest enveloping amplitude is substituted into formula by microprocessor 2:
In formula, N is coefficient constant；
Testing liquid dynamic viscosity η can be acquired.
Wherein, coefficient constant K and coefficient constant N can make rating test survey by using normal viscosity, the liquid of density
, and determine above-mentioned functional relation.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.
Claims (10)
1. a kind of for detecting the Vltrasonic device of liquid multi-parameter, which is characterized in that including microprocessor, pulse excitation module,
Echo signal processing module, piezoelectric chip and power module；
The input of the pulse excitation module terminates microprocessor, output termination piezoelectric chip；Echo signal processing module it is defeated
Enter and terminates piezoelectric chip, output termination microprocessor；Power module passes through microprocessor power supply；
The microprocessor driven pulse excitation module provides high pressure pulse to piezoelectric chip, and piezoelectric chip is by high pressure pulse
Excitation occurs piezoelectric effect and generates ultrasonic wave, and converts electric signal for each secondary reflection ultrasonic echo；Echo signal processing module
By Electric signal processing be envelope signal after feed back to microprocessor.
2. according to claim 1 a kind of for detecting the Vltrasonic device of liquid multi-parameter, which is characterized in that the piezoelectricity
The front end of chip is equipped with sound reflecting baffle；
The sound reflecting baffle includes the round tube that front end is equipped with elliposoidal baffle, and, the top of round tube is equipped with several deflector holes.
3. according to claim 1 a kind of for detecting the Vltrasonic device of liquid multi-parameter, which is characterized in that the pulse
Excitation module, including concatenated high-voltage pulse energizing circuit, isolation/driving circuit；
The input of the isolation/driving circuit terminates microprocessor, and output termination pressure pulse excitation circuit presses pulse excitation circuit
Output terminate piezoelectric chip.
4. according to claim 1 a kind of for detecting the Vltrasonic device of liquid multi-parameter, which is characterized in that the power supply
Module is respectively high-voltage pulse energizing circuit, isolation/drive circuitry by protection circuit.
5. according to claim 1 a kind of for detecting the Vltrasonic device of liquid multi-parameter, which is characterized in that the echo
Signal processing module, including sequentially connected echo capture circuit, echo filter amplification circuit, echo envelope detecting circuit；
The input of the echo capture circuit terminates piezoelectric chip；
The output end of echo envelope detecting circuit connects microprocessor by single echo lock circuit, and processor is sampled by A/D
Circuit takes back wave envelope detecting circuit；
The echo captures circuit and captures each secondary ultrasonic echo from piezoelectric chip；
The echo filter amplification circuit is filtered to each secondary ultrasonic echo and/or enhanced processing；
To treated, signal carries out envelope detection to the echo envelope detecting circuit；
The single echo lock circuit carries out the locking of single echo to echo envelope detecting circuit treated signal, and will
Locking signal is sent to microprocessor；Control A/D sample circuit is to echo envelope detection electricity after microprocessor receives locking signal
The signal that rood arrives carries out A/D sampling.
6. according to claim 1 a kind of for detecting the Vltrasonic device of liquid multi-parameter, which is characterized in that the power supply
Module includes power management module, battery；
The battery is microprocessor and pulse excitation module for power supply by power management module.
7. according to claim 6 a kind of for detecting the Vltrasonic device of liquid multi-parameter, which is characterized in that the battery
For rechargeable battery, it is equipped with matched charging circuit.
8. according to claim 1 a kind of for detecting the Vltrasonic device of liquid multi-parameter, which is characterized in that micro- place
Manage the external display module of device.
9. according to claim 1 a kind of for detecting the Vltrasonic device of liquid multi-parameter, which is characterized in that micro- place
It manages device and is equipped with external communication interface, including USB, LAN, GPIB, RS-232.
10. according to claim 1 a kind of for detecting the Vltrasonic device of liquid multi-parameter, which is characterized in that described micro-
Processor is connect with temperature sensor, and the temperature sensor is close to the setting of piezoelectric chip rear end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920360595.XU CN209541775U (en) | 2019-03-20 | 2019-03-20 | It is a kind of for detecting the Vltrasonic device of liquid multi-parameter |
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| CN201920360595.XU CN209541775U (en) | 2019-03-20 | 2019-03-20 | It is a kind of for detecting the Vltrasonic device of liquid multi-parameter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397697A (en) * | 2020-04-08 | 2020-07-10 | 河海大学常州校区 | Water level ultrasonic detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397697A (en) * | 2020-04-08 | 2020-07-10 | 河海大学常州校区 | Water level ultrasonic detection method |
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Effective date of registration: 20211213 Address after: 211806 No. 19-8, Qiaolin industrial concentration zone, Pukou District, Nanjing, Jiangsu Province Patentee after: Nanjing Shenliu Mechanical Equipment Manufacturing Co.,Ltd. Address before: 213022, No. 200, Jinling North Road, Xinbei District, Jiangsu, Changzhou Patentee before: CHANGZHOU CAMPUS OF HOHAI University |