CN207036218U - Ultrasonic level gage - Google Patents
Ultrasonic level gage Download PDFInfo
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- CN207036218U CN207036218U CN201720274009.0U CN201720274009U CN207036218U CN 207036218 U CN207036218 U CN 207036218U CN 201720274009 U CN201720274009 U CN 201720274009U CN 207036218 U CN207036218 U CN 207036218U
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- ultrasonic
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- level gage
- ultrasonic transducer
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Abstract
The utility model discloses a kind of ultrasonic level gage, and it includes ultrasonic transducer, processing unit and output unit；The ultrasonic transducer and the output unit are connected with the processing unit respectively；Described ultrasonic transducer includes：Piezoelectric crystal plate and the ultrasonic sensor being connected with the piezoelectric crystal plate；The ultrasonic sensor is connected with the processing unit；The ultrasonic transducer is connected with temperature compensation unit.The utility model uses the ultrasonic level gage of weighted average value-based algorithm, during processing unit processes, each numerical value is multiplied by into corresponding flexible strategy, then adds up summation and obtains population value, then divided by total units.The size of average depends not only on the size of the value of statistical indicant (variate-value) of constituent parts in totality, and depending on the number (frequency) that each value of statistical indicant occurs, can remove and fluctuate big reading value.It is more accurate using rear reading in ultrasonic level gage.
Description
Technical field
It the utility model is related to ultrasonic level gage technical field, and in particular to a kind of using the super of weighted average value-based algorithm
Sonic liquid-level meter.It can be widely applied to a variety of environment such as water and Sewage Environment, soda acid, mud, food.
Background technology
Because applying ultrasonic lever meter to measure numerical value is unstable, incorrect numerical value caused by water level fluctuation is contained in measured value.
So that measurement error is larger.
Utility model content
The utility model overcomes the deficiencies in the prior art, there is provided a kind of supersonic liquid level using weighted average value-based algorithm
Meter.
To solve above-mentioned technical problem, the utility model uses following technical scheme：
A kind of ultrasonic level gage, it includes ultrasonic transducer, processing unit and output unit；The ultrasonic wave transducer
Device and the output unit are connected with the processing unit respectively；Described ultrasonic transducer includes：Piezoelectric crystal plate and
The ultrasonic sensor being connected with the piezoelectric crystal plate；The ultrasonic sensor is connected with the processing unit；It is described super
Acoustic wave transducer is connected with temperature compensation unit.
Further technical scheme is that the processing unit includes single-chip microcomputer, and the single-chip microcomputer is using weighted average
The single-chip microcomputer of algorithm.
Further technical scheme is also include automatic frequency-conversion tuned cell, the ultrasonic transducer with it is described automatically
Frequency conversion tuning unit connects.
Further technical scheme is the piezoelectric crystal plate that the piezoelectric crystal plate is thickness vibration.
Compared with prior art, one of beneficial effect of the utility model embodiment is：The utility model is flat using weighting
The ultrasonic level gage of mean algorithm, during processing unit processes, each numerical value is multiplied by corresponding flexible strategy, then adds up summation and obtain
Population value, then divided by total units.The size of average depends not only on the value of statistical indicant (variate-value) of constituent parts in totality
Size, and depending on the number (frequency) that each value of statistical indicant occurs, can remove and fluctuate big reading value.In ultrasonic level gage
The middle rear reading of application is more accurate.
Brief description of the drawings
Fig. 1 is the structural principle block diagram of the utility model one embodiment.
Fig. 2 is reading signal of the utility model one embodiment using the ultrasonic level gage of weighted average value-based algorithm
Figure.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, summary and accompanying drawing), except non-specifically chatting
State, can alternative features equivalent by other or with similar purpose replaced.I.e., unless specifically stated otherwise, each feature
It is an example in a series of equivalent or similar characteristics.
Below in conjunction with the accompanying drawings and specific embodiment of the present utility model is described in detail embodiment.
In the following detailed description, many specific descriptions are described for illustrative purposes so as to thoroughly understand institute
Disclosed embodiment, it is clear, however, that one or more embodiments can be in the case of without using these specific descriptions
Implement, in other instances, known structure and device are schematically shown, to simplify accompanying drawing.
As shown in figure 1, according to one embodiment of the present utility model, the present embodiment discloses a kind of ultrasonic level gage, in detail
Thin description the present embodiment ultrasonic level gage, it includes ultrasonic transducer, processing unit and output unit；The ultrasonic waves
Energy device and the output unit are connected with the processing unit respectively.Wherein, processing unit includes single-chip microcomputer in the present embodiment, tool
Body, the single-chip microcomputer is the single-chip microcomputer using weighted average value-based algorithm.Weighted average formula x=(x1f1+x2f2+
... xkfk)/n, wherein f1+f2+...+fk=n, f1, f2 ..., fk is called power, is therefrom not difficult to find out.Work as ultrasonic level gage
The number that some value occurs within a sampling period is fewer, and it influences just smaller on final result of calculation.Such as：One is adopted
In the sample cycle：2.3 occur 10 times, and 3.0 occur 2 times, and 2.0 occur 8 times, and 2.1 occur 10 times, and final calculation result is：2.3*10/
30+3.0*2/30+2.0*8/30+2.1*10/30=2.2.It is several therefrom it can be seen that 3.0 influence less on whole result of calculation
It can be ignored.As shown in Figure 2.Ultrasonic level gage technical advantage：Ultrasonic level gage is non-contact measurement,
± 0.2% precision, 1-25 rice ranges, excellent focusing：5 degree of acoustic beam angles, multiple sensors material, built-in gamut temperature are mended
Repay.Applying ultrasonic lever meter to measure has the medium of corrosion (acid, alkali), has the occasion (sewer) of pollution, or is also easy to produce bur
Material.It is suitable for those liquid that can not be contacted with physics mode.Employ advanced microprocessing and stronger echo
Signal receives analytic technique, product is had more preferable stability.Non-cpntact measurement, it is suitable for the complicated industry spot of environment.
Acoustic wave transducer described in the present embodiment is described in detail, ultrasonic transducer includes described in the present embodiment：Piezoelectricity
Crystal wafer and the ultrasonic sensor being connected with the piezoelectric crystal plate；The ultrasonic sensor connects with the processing unit
Connect.Most widely used transducer is an electric sonic transducer to ultrasonic transducer also known as probe at present in ultrasonic level gage.Often
What is seen is piezocrystal transducer, and it is that root " piezo-electric effect " and " inverse piezoelectric effect " principle realize the mutual of the ultrasound energy of electric energy one
Conversion.When external force acts on crystal end-face, the charges of different polarity are just produced on its two relative face.With wire by both ends of the surface
On electrode connect, just have electric current and flow through.When external force disappears, the electric charge being neutralized can separate immediately again, formed with
The opposite electric current of original direction.If the external force acted on crystal end-face is alternation, so, one loose can of a pressure produces friendship
Changed electric field.It will be produced and added alternation along crystal thickness direction conversely, alternating voltage is added in on the electrode of crystal end-face
The mechanical oscillation of voltage same frequency, to neighbouring medium emission sound wave.The core of transducer is piezoelectric crystal plate, according to different need
Will, the mode of vibration of piezoelectric crystal plate has a lot, the thickness vibration, the length of vertical piece such as thin slice vibrate, the length of transverse sheet is vibrated,
The radial vibration of disk, the thickness of pipe, length, radial direction and twisting vibration, flexural vibrations etc., used wherein being vibrated with sheet thickness
Obtain at most.Because piezo-electric crystal is more crisp in itself, and because of various insulation, sealing, anticorrosion, impedance matching and protection poor environment
It is required that piezoelectric element often forms probe within a housing.The sonde configuration of ultrasonic transducer, its vibration level rate exist
More than hundreds of kilo hertzs, using the piezoelectric crystal plate of thickness vibration.It is special super using small-power, small blind area transmitting-receiving type in the present embodiment
Sonic sensor, measurement accuracy is high, stable, both measurable liquid material, also measurable solid material.
Specifically, ultrasonic transducer described in the present embodiment is connected with temperature compensation unit and automatic frequency-conversion tuning is single
Member.Temperature compensation unit corrects sound velocity error caused by variation of ambient temperature automatically, it is ensured that measure in real time it is accurate, automatically
Frequency conversion tuning function makes piezoelectric ceramics always work in optimum resonant frequency.Sensor is installed on upper vessel portion, in electronic unit
Control under, sensor launches a branch of ultrasonic pulse to testee.Sound wave is reflected by body surface, and is received by sensor
Be converted to electric signal.It is transmitted into from ultrasonic wave and is received again, its time is directly proportional to the distance of sensor to testee.Place
Reason unit detects the time, and calculates tested distance according to the known velocity of sound.Thing position can be drawn by the computing of single-chip microcomputer
Value.Spread speed of the ultrasonic wave in gas is influenceed by gas temperature, therefore needs detection gas temperature during level meter work,
The velocity of sound is compensated, to ensure measurement accuracy.
The present embodiment uses the ultrasonic level gage of weighted average value-based algorithm, during processing unit processes, each numerical value is multiplied by
Corresponding flexible strategy, then add up summation and obtain population value, then divided by total units.The size of average depends not only on totality
The size of the value of statistical indicant (variate-value) of middle constituent parts, and depending on the number (frequency) that each value of statistical indicant occurs, ripple can be removed
Dynamic big reading value.It is more accurate using rear reading in ultrasonic level gage.
" one embodiment " for being spoken of in this manual, " another embodiment ", " embodiment " etc., refer to combining
Specific features, structure or the feature of embodiment description are included at least one embodiment of the application generality description.
It is not necessarily to refer to same embodiment that statement of the same race, which occur, in multiple places in the description.Furthermore, it is understood that with reference to any
When individual embodiment describes a specific features, structure or feature, what is advocated is this to realize with reference to other embodiment
Feature, structure or feature also fall in the scope of the utility model.
Although reference be made herein to the utility model is described multiple explanatory embodiments of utility model, still, should
The understanding, those skilled in the art can be designed that a lot of other modifications and embodiment, and these modifications and embodiment will
Fall within spirit disclosed in the present application and spirit.More specifically, in the model of disclosure, drawings and claims
In enclosing, a variety of variations and modifications can be carried out to the building block and/or layout of theme combination layout.Except to building block
And/or outside the variations and modifications of layout progress, to those skilled in the art, other purposes also will be apparent.
Claims (3)
1. a kind of ultrasonic level gage, it includes ultrasonic transducer, processing unit and output unit；The ultrasonic transducer
It is connected respectively with the processing unit with the output unit；It is characterized in that：Described ultrasonic transducer includes：Piezo crystals
Body piece and the ultrasonic sensor being connected with the piezoelectric crystal plate；The ultrasonic sensor connects with the processing unit
Connect；The ultrasonic transducer is connected with temperature compensation unit；Described processing unit includes single-chip microcomputer, and the single-chip microcomputer is to adopt
With the single-chip microcomputer of weighted average value-based algorithm.
2. ultrasonic level gage according to claim 1, it is characterised in that described super also including automatic frequency-conversion tuned cell
Acoustic wave transducer is connected with the automatic frequency-conversion tuned cell.
3. ultrasonic level gage according to claim 1, it is characterised in that described piezoelectric crystal plate is thickness vibration
Piezoelectric crystal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720274009.0U CN207036218U (en) | 2017-03-20 | 2017-03-20 | Ultrasonic level gage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720274009.0U CN207036218U (en) | 2017-03-20 | 2017-03-20 | Ultrasonic level gage |
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| Publication Number | Publication Date |
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| CN207036218U true CN207036218U (en) | 2018-02-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113243626A (en) * | 2021-05-07 | 2021-08-13 | 杭州爱预医健康科技有限公司 | Health monitoring bracelet capable of reading body surface temperature |
| CN114046857A (en) * | 2021-11-10 | 2022-02-15 | 四川泛华航空仪表电器有限公司 | Anti-inclination and anti-fluctuation ultrasonic liquid level sensor and application and processing method thereof |
-
2017
- 2017-03-20 CN CN201720274009.0U patent/CN207036218U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113243626A (en) * | 2021-05-07 | 2021-08-13 | 杭州爱预医健康科技有限公司 | Health monitoring bracelet capable of reading body surface temperature |
| CN114046857A (en) * | 2021-11-10 | 2022-02-15 | 四川泛华航空仪表电器有限公司 | Anti-inclination and anti-fluctuation ultrasonic liquid level sensor and application and processing method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Sensing device applying ultrasonic lever meter to measure liquid level Effective date of registration: 20200408 Granted publication date: 20180223 Pledgee: Mianyang commercial bank Limited by Share Ltd. science and Education Business Park Branch Branch Pledgor: SICHUAN DIWEI ENERGY TECHNOLOGY Co.,Ltd. Registration number: 2018510000020 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210414 Granted publication date: 20180223 Pledgee: Mianyang commercial bank Limited by Share Ltd. science and Education Business Park Branch Branch Pledgor: SICHUAN DIWEI ENERGY TECHNOLOGY Co.,Ltd. Registration number: 2018510000020 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Ultrasonic liquid level meter Effective date of registration: 20210415 Granted publication date: 20180223 Pledgee: Mianyang commercial bank Limited by Share Ltd. science and Education Business Park Branch Branch Pledgor: SICHUAN DIWEI ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2021510000024 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230510 Granted publication date: 20180223 Pledgee: Mianyang commercial bank Limited by Share Ltd. science and Education Business Park Branch Branch Pledgor: SICHUAN DIWEI ENERGY TECHNOLOGY CO.,LTD. Registration number: Y2021510000024 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |