CN109883514A - Liquid level data detection device and method - Google Patents
Liquid level data detection device and method Download PDFInfo
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- CN109883514A CN109883514A CN201910201136.1A CN201910201136A CN109883514A CN 109883514 A CN109883514 A CN 109883514A CN 201910201136 A CN201910201136 A CN 201910201136A CN 109883514 A CN109883514 A CN 109883514A
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Abstract
The invention discloses a kind of liquid level data detection device and method, described device includes: ultrasonic sensor, controller and the poly- wave cover of ultrasonic wave；The poly- wave cover of ultrasonic wave includes a curved surface；Controller is connect with ultrasonic sensor；The concave surface of curved surface is opposite with ultrasonic sensor, and the concave surface of curved surface can project in parallel the ultrasonic wave that ultrasonic sensor issues along the first reflected beam direction, and can converge to the ultrasonic wave for entering concave surface in parallel along the first reflected beam direction on ultrasonic sensor.It is small to solve the second reflected energy of ultrasonic wave value existing in the prior art, to solve the technical problem for the liquid level data inaccuracy that detection exists in the prior art, the technical effect for improving the accuracy for the accurate liquid level data for obtaining waters to be measured is reached.
Description
Technical field
The present invention relates to drainage pipeline networks fields, in particular to a kind of liquid level data detection device and method.
Background technique
With the development of science and technology, people lead the municipal administration such as rainwater, sewage, middle water, river, lake, road with water conservancy
The level monitoring demand in domain is increasing.In recent years, in annual rainy season waterlogging event can all occur for the multiple cities in China, present
The feature that occurrence scope is wide, depth of accumulated water is big, the ponding time is long.The generation of waterlogging event not only goes out to the people in the rainy day
Row brings inconvenience, and results in personal and public property massive losses, or even the life of the people has been threatened to pacify
Entirely, the extensive concern of all sectors of society is caused.
Monitor liquid level data is to solve the basis of urban waterlogging event.The prior art mainly uses supersonic sensing
The mode that device directly receives and dispatches ultrasonic wave obtains the liquid level data for needing the waters detected.However, there are ultrasonic waves to return for this mode
Wave (back wave) energy value is small, to there is the technical problem of the liquid level data inaccuracy of detection.
Summary of the invention
The purpose of the present invention is to provide a kind of liquid level data detection device and methods, it is intended to improve and obtain waters to be measured
The accuracy of accurate liquid level data.
In a first aspect, the embodiment of the invention provides a kind of liquid level data detection devices, comprising: ultrasonic sensor, control
The poly- wave cover of device and ultrasonic wave processed；
The poly- wave cover of ultrasonic wave includes a curved surface；
The controller is connect with the ultrasonic sensor；The concave surface of the curved surface and the ultrasonic sensor phase
It is right, and the ultrasonic wave that the concave surface of the curved surface can issue the ultrasonic sensor is parallel along the first reflected beam direction
It projects, and the ultrasonic wave along first reflected beam direction in parallel into the concave surface can be converged to the ultrasonic wave
On sensor；
The controller controls the ultrasonic sensor and issues ultrasonic wave, and the ultrasonic wave reaches the recessed of the curved surface
Face, the curved surface project the ultrasonic wave along the first reflected beam direction in parallel, and the ultrasonic wave is reached water to be measured
Second back wave of domain back reflection converges on the ultrasonic sensor；The ultrasonic sensor is by second back wave
It changes into electric signal and is sent to the controller；The controller obtains the liquid level number in the waters to be measured according to the electric signal
According to.
Optionally, the curved surface is the curved surface intercepted from a paraboloid, and the ultrasonic sensor is arranged in the song
In the focus in face.
Optionally, the poly- wave cover of the ultrasonic wave further includes the first plate, the second plate and third plate, first plate
It is arranged with second platen parallel, the third plate is vertically arranged with first plate and second plate, described
Curved surface is arranged between first plate, second plate and the third plate.
Optionally, the curved surface includes four edges, and two of them edge can be overlapped with the paraboloidal bus, separately
Plane where outer two edges is vertical with the paraboloidal axis；
Two edges that can be overlapped with the paraboloidal bus of the curved surface respectively with first plate and institute
The connection of the second plate is stated, one of edge at other two edge of the curved surface is connect with the third plate.
Optionally, first plate and the second plate include first edge, second edge, third edge and the 4th side
Edge, the first edge and three sides aligned parallel, the 4th edge and the first edge and the third edge-perpendicular；
First plate and second platen parallel, the first edge of first plate, second edge, third side
Edge and the 4th edge are opposite with the first edge of second plate, second edge third edge and the 4th edge respectively；
The second edge of first plate and second plate parabolically, the parabola with it is described paraboloidal
Bus is overlapped, so that the curved surface can be fitted closely with first plate and second plate；
The first edge of the third plate and first plate and second plate fits closely.
Optionally, first plate, second plate, the third plate and the curved surface are integrally formed.
Optionally, described device further includes protection cabinet, and the controller is arranged in the guard box body；
The poly- wave cover of ultrasonic wave is connect by the 4th edge with the outer wall of the protection cabinet；
The ultrasonic sensor is arranged on the protection cabinet exterior, and is surrounded by the poly- wave cover of the ultrasonic wave.
Optionally, described device further includes pressure sensor, and the pressure sensor is connect with the controller；
The pressure sensor is used to detect the pressure within the scope of the blind area of the ultrasonic sensor, will test
Pressure signal is sent to the controller；The controller obtains the liquid level number in the waters to be measured according to the pressure signal
According to.
Optionally, described device further includes temperature sensor, and the temperature sensor is connect with the controller；
The temperature sensor is used to detect the environment temperature on ultrasonic wave hair wave path, the temperature signal that will test
It is sent to the controller, the controller compensates the liquid level data according to the temperature signal.
Second aspect, the embodiment of the invention provides a kind of liquid level data detection method, application is described in any of the above embodiments
Liquid level data detection device, comprising:
The controller controls the ultrasonic sensor and issues ultrasonic wave, and the ultrasonic wave reaches the recessed of the curved surface
Face, the curved surface project the ultrasonic wave along the first reflected beam direction in parallel, and the ultrasonic wave is reached water to be measured
Second back wave of domain back reflection converges on the ultrasonic sensor；
Second back wave is changed into electric signal and is sent to the controller by the ultrasonic sensor；
The controller obtains the liquid level data in the waters to be measured according to the electric signal.
Compared with the prior art, the invention has the following advantages:
The embodiment of the invention provides a kind of liquid level data detection device and method, described device includes: supersonic sensing
Device, controller and the poly- wave cover of ultrasonic wave；The poly- wave cover of ultrasonic wave includes a curved surface；Controller is connect with ultrasonic sensor；It is bent
The concave surface in face is opposite with ultrasonic sensor, and the ultrasonic wave that the concave surface of curved surface can issue ultrasonic sensor is along first
Reflected beam direction is projected in parallel, and can be converged to the ultrasonic wave for entering concave surface in parallel along the first reflected beam direction super
On sonic sensor.Ultrasonic sensor is controlled by controller and issues ultrasonic wave, and ultrasonic wave reaches the concave surface of the curved surface, bent
Face projects ultrasonic wave along the first reflected beam direction in parallel, and ultrasonic wave is reached to the second reflection of waters back reflection to be measured
Wave converges on ultrasonic sensor；Second back wave is changed into electric signal and is sent to controller by ultrasonic sensor；Controller
The liquid level data in waters to be measured is obtained according to electric signal.The concave surface of curved surface will can enter in parallel along the first reflected beam direction
The ultrasonic wave of concave surface converges on ultrasonic sensor, enhances the backward energy value of the ultrasonic wave of ultrasonic sensor acquisition,
To enhance the electric signal for being sent to controller, controller obtains the liquid level data in waters to be measured according to electric signal, to mention
The high accuracy of the accurate liquid level data in acquisition waters to be measured.Therefore.Solves ultrasonic wave existing in the prior art
Two reflected energy values are small, thus exist detection liquid level data inaccuracy technical problem, reached improve acquisition it is to be measured
The technical effect of the accuracy of the accurate liquid level data in waters.
Other feature and advantage of the embodiment of the present invention will illustrate in subsequent specification, also, partly from specification
In become apparent, or by implement understanding of the embodiment of the present invention.The objectives and other advantages of the invention can be by institute
Specifically noted structure is achieved and obtained in specification, claims and the attached drawing write.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows a kind of structural schematic diagram of liquid level data detection device 100 provided in an embodiment of the present invention.
Fig. 2 shows a kind of parabolical figures provided in an embodiment of the present invention.
Fig. 3 shows a kind of paraboloidal sectional view provided in an embodiment of the present invention.
Fig. 4 shows a kind of shape graph of the poly- wave cover of ultrasonic wave provided in an embodiment of the present invention.
Fig. 5 shows a kind of liquid level data detection method flow chart provided in an embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
The generation of waterlogging event, not only to the people, in the rainy day, trip brings inconvenience, and result in it is personal and
The massive losses of public property, or even the life security of the people has been threatened, cause the extensive concern of all sectors of society.
Urban waterlogging event is solved and coped with, engineering measure is on the one hand leaned on, improves standard by planning and designing, it is perfect
Municipal drainage prevention waterlogging system, and the waterproof earth's surface of urban surface is controlled, source runoff yield is reduced, downstream is increased
The storage of receiving water body arranges ability；On the other hand management measure is leaned on, establishes pumping monitoring and early warning system, is provided for government department
The dynamic monitoring data of drainage system operation provides the timely early-warning and predicting information of fining for masses' trip, so that science has
Effect is to different degrees of urban waterlogging event.
For ultrasonic solution position detecting method in the prior art in such a way that ultrasonic sensor directly receives and dispatches wave, there are super
Sound echo energy value is small, detecting distance is close and during detecting liquid level it is excessive there are blind area or have check frequency
Technical problem, and it is relatively high to the installation requirement of ultrasonic equipment, therefore the liquid level data discretion method of the prior art is not able to satisfy
People's demand.Therefore a kind of device behaviour that liquid level data is detected that is convenient, fast, stable, facilitating implementation and installation
Be badly in need of.
For this purpose, the embodiment of the invention provides the embodiment of the invention provides a kind of liquid level data detection device and method,
To solve, ultrasonic echo energy value existing in the prior art is small, detecting distance is close and deposits during detecting liquid level
In the technical problem for the liquid level data inaccuracy that blind area is excessive or has check frequency to detect the prior art.
Embodiment
A kind of liquid level data detection device 100 provided in an embodiment of the present invention, including ultrasonic sensor as shown in Figure 1
110, controller 120 and the poly- wave cover 130 of ultrasonic wave.
The poly- wave cover 130 of ultrasonic wave includes a curved surface 131, and controller 120 is connect with ultrasonic sensor 110, curved surface 131
Concave surface and ultrasonic sensor 110 it is opposite, and the ultrasonic wave that the concave surface of curved surface 131 can issue ultrasonic sensor 110
It is projected in parallel along the first reflected beam direction, and will can enter in parallel the ultrasonic wave of concave surface along the first reflected beam direction
It converges on ultrasonic sensor 110.
Ultrasonic sensor 110 is controlled by controller 120 and issues ultrasonic wave, and ultrasonic wave reaches the recessed of the curved surface 131
Face, curved surface 131 projects ultrasonic wave along the first reflected beam direction in parallel, and ultrasonic wave is reached waters back reflection to be measured
Second back wave converges on ultrasonic sensor 110；Second back wave is changed into electric signal and is sent to by ultrasonic sensor 110
Controller 120；Controller 120 obtains the liquid level data in waters to be measured according to electric signal.
By using above scheme, described device includes: ultrasonic sensor 110, controller 120 and the poly- wave cover of ultrasonic wave
130；The poly- wave cover 130 of ultrasonic wave includes a curved surface 131；Controller 120 is connect with ultrasonic sensor 110；Curved surface 131 it is recessed
Face and ultrasonic sensor 110 are opposite, and the ultrasonic wave that ultrasonic sensor 110 can be issued of the concave surface of curved surface 131 along
First reflected beam direction is projected in parallel, and can converge the ultrasonic wave for entering concave surface in parallel along the first reflected beam direction
Onto ultrasonic sensor 110.By controller 120 control ultrasonic sensor 110 issue ultrasonic wave, ultrasonic wave reach described in
The concave surface of curved surface 131, curved surface 131 project ultrasonic wave along the first reflected beam direction in parallel, and ultrasonic wave are reached to be measured
Second back wave of waters back reflection converges on ultrasonic sensor 110；Ultrasonic sensor 110 changes into the second back wave
Electric signal is sent to controller 120；Controller 120 obtains the liquid level data in waters to be measured according to electric signal.The concave surface of curved surface 131
The ultrasonic wave for entering concave surface in parallel along the first reflected beam direction can be converged on ultrasonic sensor 110, be enhanced
The backward energy value for the ultrasonic wave that ultrasonic sensor 110 obtains is controlled to enhance the electric signal for being sent to controller 120
Device 120 processed obtains the liquid level data in waters to be measured according to electric signal, to improve the accurate liquid level number for obtaining waters to be measured
According to accuracy.Therefore.Solve that the second reflected energy of ultrasonic wave value existing in the prior art is small, to there is detection
The technical problem of liquid level data inaccuracy has reached the skill for improving the accuracy for the accurate liquid level data for obtaining waters to be measured
Art effect.
In order to realize the poly- wave effect of curved surface 131, as an alternative embodiment, curved surface 131 is thrown from one
The curved surface 131 intercepted on object plane, ultrasonic sensor 110 are arranged in the focus of curved surface 131, opposite with the concave surface of curved surface 131.
The poly- wave principle of curved surface 131 is: for paraboloid, the ultrasonic wave issued from paraboloidal focus reaches paraboloid
Concave surface, paraboloidal concave surface is to the reflection of ultrasonic wave each along the first reflection direction.For along the anti-of the first reflection direction
The ultrasonic wave of paraboloidal concave surface is injected in direction, can be got well if the reflectivity of paraboloidal material is made, and paraboloid can incite somebody to action
Paraboloidal focal point is all reflected into along the ultrasonic wave that the opposite direction of the first reflection direction injects paraboloidal concave surface.Specifically
, as shown in Figure 2.Because paraboloid is to rotate to obtain along axis as bus using parabola, we pass through parabola herein
To illustrate paraboloid to the principle of reflection of ultrasonic wave.
In Fig. 2, straight line NT is parabola x2Tangent line of the=- 2*p*y at point P (x0, y0) throws parabola x2=-2*p*y
Derivative, i.e. tangent slope equation are as follows:Tangential equation: parabola x2On=- 2*p*y a bit at (x0, y0)
Tangential equationParabolical focus isThe equation of directrix isRoot
Know according to parabolical definition:By parabolic equation, x=x0, line x0 are enabled2=-2*p*y0, i.e.,
By parabola tangential equation: x=0 is enabled,I.e. as x=0,So
T point coordinate is (0 ,-y0).Straight lineSo PF=FT, obtains ∠ FTP=∠ FPT, and because parabolic
Line tangent line is equal with from the focus sending angle of back wave of ultrasonic wave wave, i.e. ∠ FPT=∠ MPN, so ∠ FTP=∠ MPN,
So obtaining: MP is parallel to y-axis.
So parabola has the properties that if the reflecting properties of parabolic surface 131 are good enough, and ultrasonic wave passes
Sensor 110 is located in parabolical focus, then is parallel to parabolical symmetry axis (y-axis) and advances and hit its parabolical concave surface
Ultrasonic wave be reflected in its focus (i.e. ultrasonic sensor 110), where reflected but regardless of parabola.On the contrary,
The ultrasonic wave generated from the point source at focus (ultrasonic sensor 110) is reflected into the ultrasonic beam for being parallel to y-axis.
Because paraboloid is to rotate to obtain along axis as bus using parabola, paraboloid has and parabola one
The property of sample.For this purpose, the ultrasonic wave issued from paraboloidal intersection point reaches the concave surface of curved surface 131, the concave surface of curved surface 131 is to ultrasound
The reflection of wave is each along the first reflection direction.The super of the concave surface of curved surface 131 is injected for the opposite direction along the first reflection direction
Sound wave can be got well if the reflectivity of the material of curved surface 131 is made, and curved surface 131 can will be along the negative side of the first reflection direction
It is all reflected into the focal point of curved surface 131 to the ultrasonic wave for the concave surface for injecting curved surface 131, that is, is emitted to ultrasonic sensor 110
On, and then the quantity for the close echo that ultrasonic sensor 110 receives is enhanced, it is connect to improve ultrasonic sensor 110
The energy value of the close echo received.After parabola is rotated, obtain three-dimensional paraboloid, then paraboloidal focus be (0,
0, -60).As long as ultrasonic sensor 110 is placed on focus (0,0, -60), against parabolic irdome (the enhanced poly- wave cover of ultrasonic wave
130) wave is sent out, according to parabolic surface properties, the enhanced poly- wave cover 130 of ultrasonic wave will play the effect for enhancing poly- wave to transmitting-receiving wave.
Wherein, used coordinate system is to establish coordinate system using paraboloidal vertex as origin.
But paraboloid is the curved surface 131 with cavity, for the ease of installation, the paraboloid that the present invention uses is full
Sufficient condition: paraboloid bus x2=-2*p*y, x are more than or equal to 0, p and are equal to 120.As shown in Figure 3.Paraboloid bus in Fig. 3
Focus is (0,60), and the equation of directrix is y=60, x value range 0 to 165.Therefore, as long as ultrasonic sensor 110 is placed on
In focus (0,60), wave is sent out against paraboloid (curved surface 131), according to parabola property, the poly- wave cover 130 of ultrasonic wave will be to sending
Ultrasonic wave and the ultrasonic wave that receives play the effect for enhancing poly- wave.
By experiment obtain, when y >=- 17.6 when.Paraboloid (issues ultrasonic wave and receives super to the transmitting-receiving wave of ultrasonic wave
Sound wave) enhancing and poly- wave effect it is poor, it is desirable that the material that the poly- wave cover 130 of ultrasonic wave is made has good reflecting properties, right
The transmitting-receiving wave of ultrasonic wave enhances and poly- wave effect can be only achieved default effect, the manufacture craft requirement to the poly- wave cover 130 of ultrasonic wave
It is high, it is more difficult to realize.For this reason, it may be necessary to by when y >=- 17.6 when paraboloid cut out.Paraboloidal bus after then cutting out is mother
Line x2=-2*p*y, x be more than or equal to 0, p be equal to 120, y >=- 17.6.As shown in Figure 3.
Because ultrasonic sensor 110 can only one direction of face, therefore, with 360 it is paraboloidal only part it is right
Ultrasonic sensor 110 plays the effect of poly- wave.And the at high cost of the curved surface 131 reflected is made, for this purpose, by poly- wave effect difference
Paraboloid removal, is directly made into plane.
In order to reduce the energy detraction of the ultrasonic wave in the poly- wave cover 130 of ultrasonic wave, as an alternative embodiment, super
The poly- wave cover 130 of sound wave further includes the first plate, the second plate and third plate, and the first plate and the second platen parallel are arranged, the
Three plates are vertically arranged with the first plate and the second plate, and the setting of curved surface 131 is flat in first plate, the second plate and third
Between plate.To achieve the goals above, curved surface 131 is the partial paraboloid intercepted along paraboloidal generatrix direction.Tool
Body, curved surface 131 includes four edges, and two of them edge can be overlapped with paraboloidal bus, where other two edge
Plane is vertical with paraboloidal axis；Two edges that can be overlapped with paraboloidal bus of curved surface 131 are flat with first respectively
Plate and the connection of the second plate, one of edge at other two edge of curved surface 131 is connect with third plate.Wherein, first
Plate and the second plate include first edge, second edge third edge and the 4th edge, first edge and three sides aligned parallels, the
Four edges and first edge and the third edge-perpendicular；First plate and the second platen parallel.The first edge of first plate,
Second edge, third edge and the 4th edge respectively with the first edge of the second plate, second edge third edge and the 4th side
Edge is opposite, and parabolically, parabola is overlapped the second edge of the first plate and the second plate with paraboloidal bus, so that curved surface
131 can fit closely with the first plate and the second plate；Third plate and the first edge of the first plate and the second plate are tight
Closely connected conjunction.As further, the first plate, the second plate, third plate and curved surface 131 according to above-mentioned edge connection side
Formula is integrally formed, and from the ultrasonic leaked wave avoided in the poly- wave cover 130 of ultrasonic wave, the quantity of effective ultrasonic wave is increased, to mention
The high energy of effective ultrasonic wave, wherein effective ultrasonic wave refers to the ultrasonic wave or the reflection that are issued to waters to be measured
Ultrasonic wave onto ultrasonic sensor 110.
In smart-cut manufacturing technology, by the machine of the control production poly- wave cover 130 of ultrasonic wave according to following modes
The operation of production is executed, to obtain the poly- wave cover 130 of integrally formed above-mentioned ultrasonic wave.For using paraboloidal vertex as origin,
It is to determine three-dimensional system of coordinate for Z axis with paraboloidal axis.Meet x by removing2+y2Z in the paraboloid of=- 2*p*z is big
In the part for being equal to -17.6, i.e., it is equal to -17.6 when z is more than or equal to -17.6, y, obtains third plate；Remove paraboloid y to be greater than
Part equal to 45 is equal to 45 when z is more than or equal to 45, y, obtains the second plate；Remove the portion that paraboloid y is less than or equal to -45
Point, i.e., it is equal to -45 when z is less than or equal to -45, y, obtains the first plate.Wherein, wherein paraboloidal focus is (0,0, -60), x
Value range 0 to 165；Y value range 0 to 165.It then obtains such as the shape in Fig. 4.It is integrally formed super in the embodiment of the present invention
The shape of the poly- wave cover 130 of sound wave is shape as shown in Figure 4.A, B, C and D in figure respectively indicate third plate, second flat
Plate, the first plate and curved surface 131.
As an alternative embodiment, described device further includes protection cabinet 160, the setting of controller 120 is being protected
In cabinet 160；The poly- wave cover 130 of ultrasonic wave is connect by the 4th edge with the outer wall of cabinet 160 is protected；Ultrasonic sensor 110
Setting is surrounded on protection 160 outer wall of cabinet by the poly- wave cover 130 of ultrasonic wave.The third edge of first plate and the second plate
Ultrasonic wave outlet is surrounded with the outer wall of curved surface 131 and protection cabinet 160.
Because the liquid level data detection mode based on ultrasonic sensor 110 can only obtain the position of the liquid level in waters to be measured
It sets and distance of the liquid level to ultrasonic sensor 110, and other liquid level datas being calculated according to this distance.And because
There are measurement blind areas for ultrasonic sensor, and therefore, it is necessary within the scope of ultrasonic sensor blind area, need another to measure liquid
The mode of position, i.e. pressure sensor measure liquid level information.
As an alternative embodiment, liquid level data detection device 100 further includes pressure sensor 140；Pressure passes
Sensor 140 is connect with controller 120；Pressure sensor 140 is used to detect the pressure within the scope of the blind area of ultrasonic sensor 110
Power, the pressure signal that will test are sent to the controller 120；Controller 120 obtains described to be measured according to pressure signal
The liquid level data in waters.Wherein, the blind area range of ultrasonic sensor 110 is in the range of 0 to 0.25 meter.
By using measurement method of the above ultrasonic sensor in conjunction with pressure sensor, ultrasound can be effectively avoided
Influence of the wave sensor blind area to measurement liquid level, improves the stability of equipment entirety.
Because the liquid level data detection mode based on ultrasonic sensor 110 can only obtain the position of the liquid level in waters to be measured
Set, and because inevitable ultrasonic wave energy loss the reason of, cause the liquid level data based on ultrasonic sensor 110 to be examined
The liquid level data that survey mode obtains has error.Therefore, liquid level data detection device 100 also needs to examine ultrasonic sensor 110
The liquid level data of survey carries out temperature-compensating.
As an alternative embodiment, liquid level data detection device 100 further includes temperature sensor 150, temperature is passed
Sensor 150 is connect with controller 120；Temperature sensor 150 is used to detect the environment temperature on ultrasonic wave hair wave path, will test
Obtained temperature signal is sent to controller 120, and controller 120 is according to temperature signal compensating liquid level data.Specifically, compensation base
In the liquid level data that ultrasonic sensor 110 obtains, and the liquid level data that compensation is obtained based on pressure sensor 140.
By using above scheme, controller 120 improves liquid level data detection according to temperature signal compensating liquid level data
The accuracy of the detection liquid level data of device 100.
As an alternative embodiment, liquid level information is sent to the service of distal end by liquid level data detection device 100
Device, server are carried out telecommunication with controller, for showing liquid level data.
When user states liquid level data detection device 100 in use, in a first aspect, being issued by ultrasonic sensor 110
Ultrasonic wave, after ultrasonic wave reaches the concave surface of curved surface 131, along the first reflection direction from the third side of the first plate and the second plate
Edge is parallel with curved surface 131 and the ultrasonic wave outlet for protecting the outer wall of cabinet 160 to surround to be projected, and forms the first back wave, first is anti-
After ejected wave vertically reaches the page in waters to be measured, is reflected according to the direction of wave out, i.e., along the second reflection direction, reflect back into song
The concave surface in face 131 forms the second back wave, the second back wave transmitting that the concave surface of curved surface 131 will reflect back into converges to super
Sonic sensor 110.Second back wave is changed into electric signal and is sent to controller 120, controller 120 by ultrasonic sensor 110
The liquid level data in waters to be measured is obtained according to electric signal.Specifically, obtaining the page in waters to be measured to ultrasonic sensor 110
Distance.Pressure sensor 140 is arranged in waters to be measured within the scope of the blind area of ultrasonic sensor 110, that is, sets by second aspect
It sets in the range of bottom of the liquid level in waters to be measured to the waters to be measured, to detect the pressure within the scope of the blind area, will examine
The pressure signal measured is sent to controller 120, and controller 120 obtains the liquid level data in waters to be measured according to pressure signal.
The third aspect is set by the way that temperature sensor 150 to be arranged in waters to be measured within the scope of the blind area of ultrasonic sensor 110
It sets in the range of bottom of the liquid level in waters to be measured to the waters to be measured, to detect the temperature of the water within the scope of the blind area,
The temperature signal that will test is sent to controller 120, and controller 120 is according to temperature signal compensating liquid level data.Real device
Liquid level data is sent to server, user can read liquid level data by server.
By using above scheme, above-mentioned 100 structure of liquid level data detection device is simple, easy for installation, enhances ultrasonic wave
Backward energy value and the liquid level data that can obtain blind area, improve the accuracy of the liquid level data of acquisition.
A kind of liquid level data detection device 100 is provided for above-described embodiment, the embodiment of the present application also correspondence provides one kind
Liquid level data detection method is illustrated S100~S300 below in conjunction with Fig. 5 including S100~S300 as shown in Figure 5.
S100: controller 120 controls ultrasonic sensor 110 and issues ultrasonic wave, and ultrasonic wave reaches the concave surface of curved surface 131,
Curved surface 131 projects ultrasonic wave along the first reflected beam direction in parallel, and ultrasonic wave is reached the of waters back reflection to be measured
Two back waves converge on ultrasonic sensor 110.
S200: the second back wave is changed into electric signal and is sent to controller 120 by ultrasonic sensor 110.
S300: controller 120 obtains the liquid level data in waters to be measured according to the electric signal.
As an alternative embodiment, the method also includes: pressure sensor 140 detects the supersonic sensing
Pressure within the scope of the blind area of device 110, the pressure signal that will test are sent to controller 120；Controller 120 is according to pressure
Signal obtains the liquid level data in waters to be measured；Wherein, the blind area range of ultrasonic sensor 110 refers to a fixed value, this
0 to 0.25 meter of dead zone of design range.
As an alternative embodiment, the method also includes: temperature sensor 150 detects the temperature in waters to be measured
Degree, the temperature signal that will test are sent to controller 120, and controller 120 is according to temperature signal compensating liquid level data.
In conclusion the embodiment of the invention provides a kind of liquid level data detection device and method, described device includes: super
Sonic sensor, controller and the poly- wave cover of ultrasonic wave；The poly- wave cover of ultrasonic wave includes a curved surface；Controller and ultrasonic sensor
Connection；The concave surface of curved surface is opposite with ultrasonic sensor, and the ultrasonic wave that the concave surface of curved surface can issue ultrasonic sensor
It is projected in parallel along the first reflected beam direction, and will can enter in parallel the ultrasonic wave of concave surface along the first reflected beam direction
It converges on ultrasonic sensor.Ultrasonic sensor is controlled by controller and issues ultrasonic wave, and ultrasonic wave reaches the curved surface
Concave surface, curved surface projects ultrasonic wave along the first reflected beam direction in parallel, and ultrasonic wave is reached waters back reflection to be measured
The second back wave converge on ultrasonic sensor；Second back wave is changed into electric signal and is sent to control by ultrasonic sensor
Device；Controller obtains the liquid level data in waters to be measured according to electric signal.The concave surface of curved surface can will be along the first reflected beam side
It is converged on ultrasonic sensor to the parallel ultrasonic wave into concave surface, enhances returning for the ultrasonic wave of ultrasonic sensor acquisition
Wave energy magnitude, to enhance the electric signal for being sent to controller, controller obtains the liquid level number in waters to be measured according to electric signal
According to improve the accuracy for obtaining the accurate liquid level data in waters to be measured.Therefore.It solves existing in the prior art
Ultrasonic wave the second reflected energy value is small, to there is the technical problem of the liquid level data inaccuracy of detection, has reached and has improved
Obtain the technical effect of the accuracy of the accurate liquid level data in waters to be measured.
About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method
Embodiment in be described in detail, no detailed explanation will be given here.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. required to protect
Shield the present invention claims features more more than feature expressly recited in each claim.More precisely, such as right
As claim reflects, inventive aspect is all features less than single embodiment disclosed above.Therefore, it then follows tool
Thus claims of body embodiment are expressly incorporated in the specific embodiment, wherein each claim conduct itself
Separate embodiments of the invention.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of multiple such
Element.The present invention can be by means of including the hardware of several different elements and being come by means of properly programmed computer real
It is existing.In the unit claims listing several devices, several in these devices can be through the same hardware branch
To embody.The use of word first, second, and third does not indicate any sequence.These words can be explained and be run after fame
Claim.
Claims (10)
1. a kind of liquid level data detection device characterized by comprising ultrasonic sensor, controller and the poly- wave cover of ultrasonic wave；
The poly- wave cover of ultrasonic wave includes a curved surface；
The controller is connect with the ultrasonic sensor；The concave surface of the curved surface is opposite with the ultrasonic sensor, and
The concave surface of the curved surface can project in parallel the ultrasonic wave that the ultrasonic sensor issues along the first reflected beam direction,
And the ultrasonic wave along first reflected beam direction in parallel into the concave surface can be converged to the supersonic sensing
On device；
The controller controls the ultrasonic sensor and issues ultrasonic wave, and the ultrasonic wave reaches the concave surface of the curved surface, institute
It states curved surface and projects the ultrasonic wave in parallel along the first reflected beam direction, and will be anti-behind ultrasonic wave arrival waters to be measured
The second back wave penetrated converges on the ultrasonic sensor；Second back wave is changed into electricity by the ultrasonic sensor
Signal is sent to the controller；The controller obtains the liquid level data in the waters to be measured according to the electric signal.
2. the apparatus according to claim 1, which is characterized in that the curved surface is the curved surface intercepted from a paraboloid, institute
Ultrasonic sensor is stated to be arranged in the focus of the curved surface.
3. the apparatus of claim 2, which is characterized in that the poly- wave cover of ultrasonic wave further includes the first plate, second
Plate and third plate, first plate and second platen parallel are arranged, the third plate and first plate
It is vertically arranged with second plate, the curved surface is arranged in first plate, second plate and the third plate
Between.
4. device according to claim 3, which is characterized in that the curved surface includes four edges, and two of them edge can
To be overlapped with the paraboloidal bus, plane where other two edge is vertical with the paraboloidal axis；
Two edges that can be overlapped with the paraboloidal bus of the curved surface respectively with first plate and described
The connection of two plates, one of edge at other two edge of the curved surface is connect with the third plate.
5. device according to claim 4, which is characterized in that first plate and the second plate include first edge,
Second edge, third edge and the 4th edge, the first edge and three sides aligned parallel, the 4th edge and described the
One edge and the third edge-perpendicular；
First plate and second platen parallel, the first edge of first plate, second edge, third edge and
4th edge is opposite with the first edge of second plate, second edge third edge and the 4th edge respectively；
The second edge of first plate and second plate parabolically, the parabola and the paraboloidal bus
It is overlapped, so that the curved surface can be fitted closely with first plate and second plate；
The first edge of the third plate and first plate and second plate fits closely.
6. device according to claim 5, which is characterized in that first plate, second plate, the third are flat
Plate and the curved surface are integrally formed.
7. device according to claim 6, which is characterized in that described device further includes protection cabinet, and the controller is set
It sets in the guard box body；
The poly- wave cover of ultrasonic wave is connect by the 4th edge with the outer wall of the protection cabinet；
The ultrasonic sensor is arranged on the protection cabinet exterior, and is surrounded by the poly- wave cover of the ultrasonic wave.
8. device according to claim 1-7, which is characterized in that described device further includes pressure sensor, institute
Pressure sensor is stated to connect with the controller；
The pressure sensor is used to detect the pressure within the scope of the blind area of the ultrasonic sensor, the pressure that will test
Signal is sent to the controller；The controller obtains the liquid level data in the waters to be measured according to the pressure signal.
9. device according to claim 8, which is characterized in that described device further includes temperature sensor, and the temperature passes
Sensor is connect with the controller；
The temperature sensor is used to detect the environment temperature on ultrasonic wave hair wave path, and the temperature signal that will test is sent
To the controller, the controller compensates the liquid level data according to the temperature signal.
10. a kind of liquid level data detection method is applied to the described in any item liquid level data detection devices of claim 1-9,
It is characterized in that, comprising:
The controller controls the ultrasonic sensor and issues ultrasonic wave, and the ultrasonic wave reaches the concave surface of the curved surface, institute
It states curved surface and projects the ultrasonic wave in parallel along the first reflected beam direction, and will be anti-behind ultrasonic wave arrival waters to be measured
The second back wave penetrated converges on the ultrasonic sensor；
Second back wave is changed into electric signal and is sent to the controller by the ultrasonic sensor；
The controller obtains the liquid level data in the waters to be measured according to the electric signal.
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