CN110108335A - Level measuring method, liquid level emasuring device, liquid level detector and storage medium - Google Patents
Level measuring method, liquid level emasuring device, liquid level detector and storage medium Download PDFInfo
- Publication number
- CN110108335A CN110108335A CN201910225032.4A CN201910225032A CN110108335A CN 110108335 A CN110108335 A CN 110108335A CN 201910225032 A CN201910225032 A CN 201910225032A CN 110108335 A CN110108335 A CN 110108335A
- Authority
- CN
- China
- Prior art keywords
- motion bar
- liquid level
- accelerometer
- change
- measuring instrument
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/32—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements
- G01F23/38—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements using magnetically actuated indicating means
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The application provides a kind of level measuring method, liquid level emasuring device, liquid level detector and storage medium.Level measuring method is applied to liquid level detector, and liquid level detector includes the angel measuring instrument of motion bar, the float for being set to motion bar one end and the body of rod for being set to motion bar, and level measuring method includes: the detection data for obtaining angel measuring instrument；And according to detection data and the length of motion bar, the change in elevation for calculating float is poor.Above-mentioned level measuring method, the change in elevation that float is calculated by the detection data of angel measuring instrument is poor, so that it is determined that the change in elevation of liquid level is poor, detection accuracy is higher, and performance is relatively stable, and cost is lower.
Description
Technical field
This application involves the technical field of level sensing, particularly a kind of level measuring method, liquid level emasuring device,
Liquid level detector and storage medium.
Background technique
Level measuring technology is a kind of more mature universal measurement technology, in modern industrial production and life nowhere not
?.The liquid level sensor for being conventionally used to measurement liquid level (such as water level) includes touch sensor and noncontacting proximity sensor.
In touch sensor, mostly using water as conducting medium, and using electrode as level measurement probe.In measuring probe
When contacting or impregnating in water, circuit is connected to obtain the height of water level.Due to such sensor since electrode used therein material is straight
It connects and is contacted with water, stability is poor with stability.
Noncontacting proximity sensor generallys use radar as auxiliary detection.Radar level gauge uses bracket cantilever installation side
Formula, easy for installation, measurement accuracy is high, strong antijamming capability, application it is widest in area general, sent out by radar level gauge sensing antenna
Radar pulse is penetrated, antenna receives the pulse returned from water-reflected, and records the time, since electromagnetic wave propagation speed is a normal
Number, thus obtain sensing antenna to the water surface liquid level.However, traditional process based on radar level gauge measurement liquid level is ground
Study carefully discovery, influence of the radar level gauge vulnerable to floating on water, when the water surface has the floating period of the day from 11 p.m. to 1 a.m, floating can be mistakenly considered water by radar
Face, measurement the result is that probe to floating son distance, measurement result inaccuracy, and the cost of radar level gauge usually compared with
It is high.
Summary of the invention
In view of this embodiment of the present application provides a kind of property precision higher level measuring method, and for executing the party
Liquid level detector, liquid level emasuring device and the storage medium of method, to solve the above problems.
The embodiment of the present application provides a kind of level measuring method, is applied to liquid level detector, and liquid level detector includes activity
The angel measuring instrument of bar, the float for being set to motion bar one end and the body of rod for being set to motion bar, method include: to obtain angle to survey
Measure the detection data of instrument；And according to detection data and the length of motion bar, the change in elevation for calculating float is poor
The embodiment of the present application also provides a kind of liquid level emasuring device, is applied to liquid level detector, and liquid level detector includes living
The angel measuring instrument of lever, the float for being set to motion bar one end and the body of rod for being set to motion bar, dip measuring device include:
Detection module, for obtaining the detection data of angel measuring instrument；And computing module, for according to detection data and motion bar
Length, the change in elevation for calculating float is poor.
The embodiment of the present application also provides a kind of liquid level detector, including motion bar, float and angel measuring instrument, float are set
It is placed in one end of motion bar；Angel measuring instrument is set to the body of rod of motion bar.Liquid level detector further includes one or more processing
Device, memory and one or more application program, wherein one or more application programs are stored in memory and are matched
It is set to and is performed by one or more processors, one or more programs are configured to carry out level measuring method as above.
The embodiment of the present application also provides a kind of computer-readable storage medium, is stored in computer readable storage medium
Program code, program code can be called by processor and execute above-mentioned level measuring method
In the level measuring method that the application embodiment provides, the angle of rotation of motion bar is detected by angel measuring instrument
Degree, and then the change in elevation difference of float is calculated to obtain change of pitch angle of the liquid level in preset time section, it calculates
Precision is higher, and stability is preferable.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, attached drawing needed in embodiment will be made below
Simply introduce, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the application, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of liquid level detector provided by the embodiments of the present application.
Fig. 2 is the application scenarios schematic diagram of liquid level detector shown in Fig. 1.
Fig. 3 is the coordinates computed schematic diagram of the accelerometer of liquid level detector shown in Fig. 2.
Fig. 4 is another coordinates computed schematic diagram of the accelerometer of liquid level detector shown in Fig. 2.
Fig. 5 is another coordinates computed schematic diagram of the accelerometer of liquid level detector shown in Fig. 2.
Fig. 6 is a kind of flow diagram of level measuring method provided by the embodiments of the present application.
Fig. 7 is the flow diagram of another level measuring method provided by the embodiments of the present application.
Fig. 8 is the functional block diagram of liquid level emasuring device provided by the embodiments of the present application.
Fig. 9 is the structural block diagram of computer readable storage medium provided by the embodiments of the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Referring to Fig. 1, the application provides a kind of liquid level detector 100, for detecting the liquid level and liquid of water, oil etc.
The changing condition of face height.The liquid level detector 100 includes motion bar 10, float 30 and angel measuring instrument 50.Float 30 is set
It is placed in one end of motion bar 10, is used to float on the liquid level 600 of the liquid such as water, oil.Angel measuring instrument 50 is set to motion bar
10 body of rod is used to measure the tilt angle of motion bar 10.
Referring to Fig. 2, in some usage scenarios, as shown in Figure 1, the one end of motion bar 10 far from float 30 is movably
In a fixture (such as metope), the other end and float 30 of motion bar 10 fall naturally for connection (such as hinged or pivot joint),
Until float 30 floats on liquid level 600 to be measured, at this point, motion bar 10 with respect to the horizontal plane 101 forms certain inclination angle theta 1 or θ
2.Changed by the inclination angle theta 1 or θ 2 of the motion bar 10 detected of angel measuring instrument 50, you can learn that the change in elevation of liquid level 600.
The calculation method of the change in elevation of liquid level can be realized, this explanation using level measuring method provided by the embodiments of the present application
Book is said in following examples and is described in detail.
The scene that liquid level detector 100 provided by the present application uses has very much, such as water tank, sink, fuel tank, the application with
It is illustrated for use in water tank.In use, motion bar 10 is connected to the side wall of water tank far from one end of float 30, and
It is side walls hinged with water tank, so that motion bar 10 can be swung up and down under the action of float 30 in the short transverse of water tank, when
So, angel measuring instrument 50 is rotated with the swing of motion bar 10.
Referring to Fig. 1, further, in the present embodiment, float 30 is movably connected in motion bar 10, so as to
In buoys float 30 when the water surface, motion bar 10 can be rotated according to the height of the water surface relative to float 30, to change itself
Tilt angle.In the present embodiment, the connection relationship between float 30 and motion bar 10 is hinged.In the present embodiment, float
30 material is unrestricted, the lesser material of density, such as foam can be used to be made, alternatively, it can be hollow knot
Structure, in order to reduce global density so as to swimming on the water surface.The shape of float 30 is unrestricted, for example, float 30 can
Think sphere, bulk etc..
Angel measuring instrument 50 is fixed on the shank portion of motion bar 10, and further, angel measuring instrument 50 can be set
The periphery of motion bar 10 can also be contained in the inside of motion bar 10.
In the present embodiment, angel measuring instrument 50 includes accelerometer, when measuring the inclination angle of motion bar 10, according to adding
Speedometer data detected measure.As shown in Fig. 2, in the present embodiment, accelerometer is three axis accelerometer, pass through
Accelerometer respectively as live by the acceleration on tri- axis of X, Y, Z, the inclination angle theta 1 or θ 2, θ 1 or θ 2 that can calculate accelerometer
The inclination angle of lever 10.Specifically, may be implemented since three axis accelerometer is based on gravity principle with three axis accelerometer
The inclination angle of twin shaft positive and negative 74 degree or twin shaft 0-360 degree, after correction, precision is higher than twin-axis accelerometer and is greater than measurement angle
The case where degree is 60 degree.
As shown in figure 3, if accelerometer horizontal rest, X, Y-direction weight component be 0g, and the weight of Z-direction
Force component is g.Namely:
X=0；Y=0；Z=g.
As shown in figure 4, being set if there is certain angle between each axis and horizontal plane 101 of accelerometer:
The acceleration magnitude of the X-direction of accelerometer is Ax,
The X-axis of accelerometer and the angle of horizontal plane 101 are α 1,
The X-axis of accelerometer and the angle α of acceleration of gravity；If:
The acceleration of the Y direction of accelerometer is Ay,
The Y-axis of accelerometer adds angle to be β 1 with horizontal plane 101,
The Y-axis of accelerometer and the angle of gravity acceleration g are β；If:
The acceleration of accelerometer Z-direction is Az,
The angle of accelerometer Z axis and horizontal plane is γ 1,
The angle of accelerometer Z axis and gravity acceleration g is γ.
Angle based on above-mentioned definition, there are following relationships between above-mentioned each angle:
α=90 °-α 1；
β=90 °-β 1；
γ=90 °-γ 1.Then component of the gravity acceleration g in each axis direction is respectively as follows:
Ax=g*cos α；
Ay=g*cos β；
Az=g*cos γ.To obtain:
Ax=g*cos α=g*cos (90 ° of-α 1)=g*sin α 1；
Ay=g*cos β=g*cos (90 ° of-β 1)=g*sin β 1；
Az=g*cos γ=g*cos (90 ° of-γ 1)=g*sin γ 1.
Based on Pythagorean theorem and trigonometric function relationship, the acceleration of vertical line and each axis that gravity acceleration g projects on each axis
Size relation between degree, gravity acceleration g is as follows:
1) gravity acceleration g is to the size relation between the X-axis vertical line projected and the acceleration of X-axis, gravity acceleration g
Are as follows:
G*g=Ax*Ax*g*cos α 1*g*cos α 1, then:
G*cos α 1=squr (g*g-Ax*Ax)；
2) gravity acceleration g is to the size relation between the Y-axis vertical line projected and the acceleration of Y-axis, gravity acceleration g
Are as follows:
G*g=Ay*Ay*g*cos β 1*g*cos β 1, then:
G*cos β 1=squr (g*g-Ay*Ay)；
3) gravity acceleration g is to the size relation between the Y-axis vertical line projected and the acceleration of Y-axis, gravity acceleration g
Are as follows:
G*g=Az*Az*g*cos γ 1*g*cos γ 1, then:
G*cos γ 1=squr (g*g-Az*Az)；
Wherein, α 1, β 1, γ 1 are radian value of the accelerometer about X, Y, Z axis respectively, and Ax, Ay, Az are three axis respectively
On acceleration value.
Known g is equivalent to the diagonal line of cube in solid geometry, and Ax, Ay, Az are equivalent to three sides of cube,
As shown in figure 5, using the dotted line l in figure as auxiliary line, then the size relation of dotted line l and Y, acceleration on Z axis are as follows:
L*l=Ay*Ay+Az*Az can be obtained according to Pythagorean theorem:
L*l+Ax*Ax=Ay*Ay+Az*Az+Ax*Ax=g*g, it follows that: the relationship of acceleration value and radian value are as follows:
Tan α 1=Ax/squr (Ay*Ay+Az*Az)；
Tan β 1=Ay/squr (Ax*Ax+Az*Az)；
Tan γ 1=Az/squr (Ax*Ax+Ay*Ay).
So, accelerometer is respectively as follows: relative to the radian value of tri- axis of X, Y, Z
α 1=arctan (Ax/squr (Ay*Ay+Az*Az))；
β 1=arctan (Ay/squr (Ax*Ax+Az*Az))；
γ 1=arctan (Az/squr (Ax*Ax+Ay*Ay)).
In the embodiment of the present application, the judgement that angel measuring instrument 30 changes the measurement at inclination angle and acceleration, based on above-mentioned
3-axis acceleration calculating method realize.Therefore, in the embodiment of the present application, each axis inclining relative to gravity direction of accelerometer
Angle are as follows:
Inclination angle of the X-axis relative to gravity direction are as follows:
θ x=α 1*180/ π=[arctan (Ax/squr (Ay*Ay+Az*Az))] * 180/ π；
Inclination angle of the Y-axis relative to gravity direction are as follows:
θ y=β 1*180/ π=[arctan (Ay/squr (Ax*Ax+Az*Az))] * 180/ π；
Inclination angle of the Z axis relative to gravity direction are as follows:
θ z=γ 1*180/ π=[arctan (Az/squr (Ax*Ax+Ay*Ay))] * 180/ π；Wherein:
α 1, β 1, γ 1 are the radian value of X, Y, Z axis and horizontal plane 101 respectively；
Ax, Ay, Az are respectively accelerometer respectively in the acceleration in X, Y, Z axis direction.
Referring to Fig. 2, by above-mentioned Dip countion method, according to the length L of motion bar 10, the angle of the application
Measuring instrument 50 can calculate the change in elevation D of the water surface at former and later two time points:
D=| L (COS θ 1-COS θ 2) |,
Wherein, according to known to above-mentioned calculating:
θ 1=γ 1*180/ π=[arctan (Az1/squr (Ax1*Ax1+Ay1*Ay1))] * 180/ π
θ 2=γ 2*180/ π=[arctan (Az2/squr (Ax2*Ax2+Ay2*Ay2))] * 180/ π
After carrying out substitution operation, it can be deduced that the change in elevation D of the water surface at former and later two time points.
It is understood that in other embodiments, angel measuring instrument 50 may include goniometer, by obtaining angle
The measurement data of meter can directly obtain the inclination angle theta 1 or θ 2 of motion bar 10, so that the water at former and later two time points be calculated
The change in elevation D in face:
D=| L (COS θ 1-COS θ 2) |.
In some embodiments, goniometer can be formed based on Magnetic Sensors such as hall devices.For example, in the present embodiment
In, goniometer may include the hall device for being connected to water tank side wall, and be connected to the magnet of motion bar 10, motion bar 10
When rotation, hall device is able to detect that the changes of magnetic field around magnet, so that it is determined that the rotational angle of motion bar 10 (namely inclines
Angle θ 1 or θ 2).Certainly, the form of above-mentioned Magnetic Sensor can have very much, but all include at least for detect magnetic field strength and
The magnetic induction loop (such as hall device, magnetoresistance effect sensor) of magnetic direction, when angel measuring instrument 50 rotates, magnet
The magnetic induction line of generation passes through magnetic induction loop, magnetic induction loop cutting magnetic induction line, so that electric signal is generated in magnetic induction loop, thus root
The inclination angle theta 1 or θ 2 of motion bar 10 are obtained according to the electric signal.
Certainly, in some embodiments, the size of the inclination angle theta of motion bar 10 can float up and down with float 30 and be become
Change, each water level of float 30 can detected by liquid level detector 100 in real time.
Further, in some embodiments, by liquid level detector 100, it can detecte the real time water level in water tank
Highly.Specifically, when float 30 moves up and down under buoyancy, under the drive of motion bar 10, angel measuring instrument 50
Rotation, angel measuring instrument 50 can detecte the current inclination θ of motion bar 10 as a result,.Further according to motion bar 10 and water tank side wall
Distance, the length L of motion bar 10 and the inclination angle theta of motion bar 10 of the tie point away from water tank bottom, can calculate the water in water tank
Position height.In above-mentioned detection process, this liquid level detector 100 can continuously real-time detection water tank current level, have
Conducive to user to the control of water level.
Certainly, in some embodiments, for the more intuitive viewing current level of user, liquid level detector 100 may be used also
To include display, display is electrically connected with angel measuring instrument 50, and is used for the detection parameters of angles of display measuring instrument 50.Angle
The angle parameter that measuring instrument 50 detects can be transferred to display and be shown, certainly, in some embodiments, display can
To show current 30 position of float, liquid level etc..
In order to timely remind user when water level reaches early warning water level, liquid level detector 100 can also include alarm,
Alarm is electrically connected with angel measuring instrument 50, and parameter (such as height of water level and its variation for detecting in angel measuring instrument 50
Deng) exceed preset parameter range when alarm.For example, when the corresponding liquid level of angle that angel measuring instrument 50 detects is pre- beyond institute
If liquid level range when, angel measuring instrument 50 to alarm send electric signal, activate alarm, make alarm equipment alarm.Alarm
It can be light crossing-signal, voice guard or vibration alarm etc..
Further, liquid level detector 100 can also include communications module 72 and control mould group 74 (refering to fig. 1), lead to
Letter mould group 72 is electrically connected with control mould group 74.In the present embodiment, communications module 72 all can be integrated with control mould group 74
Circuit module, e.g., one chip microcomputer, processor chips or other modules etc..Controlling mould group 74 is in the control of liquid level detector
The heart by running or execute the software program and/or module that are stored in memory (not shown), and calls and is stored in storage
The data of device execute the various functions and processing data of fluid level controller.
Communications module 72 includes wireless signal transmitter and wireless signal receiver, is used for and extraneous electronic device
The communication such as (such as mobile phone portable intelligent electronic equipment) equipment.Mould group 74 is controlled to be used to pass through communications module 72 and electronic device
Communication, to allow user to control liquid level detector 100 by electronic device or allow liquid level detector 100 by the detection feelings of liquid level
Condition is sent to communications module 72 in time.
Further, liquid level detector 100 provided by the present application can be applied in smart home system, smart home system
System generally includes smart machine, gateway and server, and gateway realizes the communication connection between smart machine and server, external
Electronic device can be communicated via gateway accessing server, or directly with server, in order to obtain smart machine
Working condition or control smart machine.Liquid level detector 100 can be communicated by communications module 72 with server, thus
Realize the communication connection with electronic device.After controlling mould group 74 and determining notification message, by communications module 72 and gateway,
Notification message is sent to server, to enable the server to pushing to notification message into specified electronic equipment.It can manage
Solution, the calculating process of above-mentioned calculating liquid level change in elevation difference can be performed locally by liquid level detector 100, can also be with
It will test after data are uploaded to server, calculated by server.
Further, in order to which the change in elevation for calculating liquid level is poor, control mould group can also realize computing function, according to angle
The detection data of measuring instrument 50, come calculate liquid level height and liquid level change in elevation it is poor, specific calculating process is referring to upper
Offer embodiment is provided, is not being repeated herein.
Above-mentioned liquid level detector 100, due to using angel measuring instrument 50 to detect the inclination angle of motion bar 10 to calculate liquid level
Change in elevation situation, it is the small volume of the liquid level detector 100 of the application, accurate compared to traditional liquid level detector
Degree is high, low in energy consumption and cost is lower.
Referring to Fig. 6, the embodiment of the present application provides a kind of level measuring method based on above-mentioned liquid level detector 100, use
In the changing condition for the liquid level for detecting the liquid such as water, oil by liquid level detector 100.In the particular embodiment, on
The level measuring method stated is applied to liquid level emasuring device 200 as shown in Figure 8 and configured with liquid level emasuring device 200
In liquid level detector.Wherein, liquid level detector includes motion bar, the float for being set to motion bar one end and is set to motion bar
The angel measuring instrument of the body of rod.The level measuring method detects the rotational angle of motion bar by angel measuring instrument, and then calculates floating
The change in elevation difference of son is to obtain the variation of liquid level, and the precision calculated is higher, and stability is preferable.
Level measuring method provided by the embodiments of the present application is once triggered, then the process of method can pass through in embodiment
Liquid level detector automatic running, wherein each step can be first laggard according to the sequence in such as flow chart when operation
Row, is also possible to multiple steps according to the actual situation while carrying out, herein and without limitation.Level measuring method may include step
Rapid S101~S103.
Step S101: the detection data of angel measuring instrument is obtained.
Further, the tilt angle data of angel measuring instrument motion bar detected are obtained, at this point, step S101 can be with
Include: the detection data based on angel measuring instrument, determines change of pitch angle of the motion bar in preset time section.
In some embodiments, angel measuring instrument may include accelerometer, which can accelerate for three axis
Degree meter, then by the detection data of accelerometer, to determine change of pitch angle of the motion bar in preset time section.It is specific and
Speech, in actual use, motion bar is articulated with fixture (such as wall) liquid level detector far from one end of float, activity
Bar is equipped with one end of float and float then floats on the water surface, at this point, motion bar can be with vertical direction (namely gravity acceleration g
Direction) between it is at a certain angle.It is possible to further pass through the detection accelerometer acceleration on tri- axis of X, Y, Z respectively
Spend obtain the acceleration of accelerometer and and acceleration value of the accelerometer on motion bar direction, determine that motion bar exists
Change of pitch angle in preset time section.
In other some embodiments, angel measuring instrument may include goniometer, then is examined by obtaining goniometer
The angle of survey determines change of pitch angle of the motion bar in preset time section.Specifically, liquid level detector was actually using
Cheng Zhong, motion bar are articulated with fixture (such as wall, water tank side wall) far from one end of float, and motion bar is equipped with one end of float
And float then floats on the water surface, at this point, motion bar can be between vertical direction (namely acceleration of gravity direction) at certain
Angle, therefore, by the detection data of the goniometer, available motion bar is relative to acceleration of gravity direction in preset time
The change of pitch angle of change of pitch angle in section.
Step S103: according to detection data and the length of motion bar, the change in elevation for calculating float is poor.
Further, the length of the change of pitch angle and motion bar according to motion bar in preset time section calculates floating
The change in elevation of son is poor, and the change in elevation difference of float is that the change in elevation of measured liquid level is poor.For example, can be according to triangle
Functional relation know change of pitch angle of the distance between hinged end of the liquid level and motion bar/motion bar in preset time section with
And the relationship between the length of motion bar, so that the change in elevation for calculating liquid level is poor.
In the level measuring method that the application embodiment provides, the angle of rotation of motion bar is detected by angel measuring instrument
Degree, and then the change in elevation difference of float is calculated to obtain change of pitch angle of the liquid level in preset time section, it calculates
Precision is higher, and stability is preferable.
Referring to Fig. 7, the application also provides another liquid level based on above-mentioned liquid level detector and level measuring method
Measurement method for detecting the rotational angle of motion bar by angel measuring instrument, and then calculates the change in elevation difference of float to obtain
Take the variation of liquid level.In the present embodiment, which may include step S201~S207.
Step S201: receiving the start command of the transmission for the equipment connecting with liquid level detector, according to start command, starting
Angel measuring instrument.
In some embodiments, liquid level detector can also include communications module and control mould group (refering to fig. 1), lead to
Letter mould group is electrically connected with control mould group.Mould group is controlled to be used for by communications module and electronic device communications, to allow user to pass through
Electronic device control liquid level detector allows liquid level detector that the detection case of liquid level is sent to communications module in time.With
The electronic device include but is not limited to include mobile phone, remote controler etc..For example, user can be using the APP of electronic device come to liquid
Bit detector sends start command.
Step S203: the detection data of angel measuring instrument is obtained.
Further, the tilt angle data of angel measuring instrument motion bar detected are obtained, at this point, step S203 can be with
Include: the detection data based on angel measuring instrument, determines change of pitch angle of the motion bar in preset time section.
In some embodiments, angel measuring instrument may include accelerometer, which can accelerate for three axis
Degree meter, then by the detection data of accelerometer, to determine change of pitch angle of the motion bar in preset time section.It is specific and
Speech, in actual use, motion bar is articulated with fixture (such as wall) liquid level detector far from one end of float, activity
Bar is equipped with one end of float and float then floats on the water surface, at this point, motion bar can be with vertical direction (namely acceleration of gravity side
To) between it is at a certain angle.It is possible to further which by accelerometer, acceleration on tri- axis of X, Y, Z is obtained respectively
Take accelerometer acceleration and and acceleration value of the accelerometer on motion bar direction, determine motion bar when default
Between change of pitch angle in section.
When calculating the change of pitch angle of motion bar, it is referred to the calculating process of the angel measuring instrument of above-described embodiment.Specifically
For, referring to Fig. 2, it is assumed that inclination angle of the motion bar in preset time section has changed to θ 2 from θ 1, then in step
In the calculating process of S203, inclination angle of the motion bar in preset time section should be calculated referring to above-mentioned calculating process
Spend θ 2 and θ 1.Since detailed calculating derivation process having been given above, this embodiment is not repeated.According to above-mentioned calculating
Process can be learnt:
θ 1=γ 1*180/ π=[arctan (Az1/squr (Ax1*Ax1+Ay1*Ay1))] * 180/ π；
θ 2=γ 2*180/ π=[arctan (Az2/squr (Ax2*Ax2+Ay2*Ay2))] * 180/ π；Wherein:
θ 1 is motion bar at the inclination angle of the start time point in preset time section；
θ 2 is motion bar at the inclination angle of the end time point in preset time section；
Z axis is along the direction where motion bar；
γ 1 is accelerometer in start time point, the angle of Z axis and horizontal plane；
When γ 2 is that accelerometer is put between at the end, the angle of Z axis and horizontal plane；
Az1 is accelerometer in start time point, in the acceleration of Z-direction；
When Az2 is that accelerometer is put between at the end, in the acceleration of Z-direction；
Ax1 is accelerometer in start time point, in the acceleration of X-direction；
When Ax2 is that accelerometer is put between at the end, in the acceleration of X-direction；
Ay1 is accelerometer in start time point, in the acceleration of Y direction；
When Ay2 is that accelerometer is put between at the end, in the acceleration of Y direction.
By the algorithm above it is found that determine tilt angle theta 2 and θ 1 of the motion bar in preset time section, then
The variation of acceleration of the accelerometer in preset time section should first be obtained.Therefore, in some embodiments, pass through acquisition
Detection data of the accelerometer in preset time section, to determine that change in elevation of the liquid level in the time interval is poor.At this point,
Detection data based on angel measuring instrument, determines change of pitch angle of the motion bar in preset time section, and specific steps can be with
It include: the variation for obtaining the acceleration of the accelerometer in preset time section；Obtain accelerometer acceleration and with
And acceleration value of the accelerometer on motion bar direction；According to the acceleration and and acceleration value, determine the activity
Change of pitch angle of the bar in preset time section.
Specific calculating process is referred to accelerometer provided by the above embodiment respectively about on tri- axis of X, Y, Z
The calculating process of acceleration value (Ax, Ay, Az).
In preset time section, the radian value of accelerometer has changed to α 12, β 12, γ 12 by α 11, β 11, γ 11,
Wherein, α 1, β 1, γ 1 are radian value of the accelerometer about X, Y, Z axis respectively, and suffix 1,2 is preset time section respectively
Radian value corresponding to start time point and end time point.For example, α 11 be accelerometer in start time point about X-axis
Radian value, α 12 is radian value about X-axis when accelerometer is put between at the end.The rest may be inferred, and β 11 is that accelerometer exists
About the radian value of Y-axis when start time point, β 12 is radian value when accelerometer is put between at the end about Y-axis；γ 11 is
For accelerometer in start time point about the radian value of Z axis, γ 12 is arc when accelerometer is put between at the end about Z axis
Angle value.
Meanwhile according to the detection data of acceleration, its acceleration value on tri- axis of X, Y, Z respectively can be directly known
Ax,Ay,Az.In preset time section, the acceleration of accelerometer has changed to Ax2, Ay2, Az2 by Ax1, Ay1, Az1,
Wherein, suffix 1,2 is acceleration value corresponding to the start time point and end time point in preset time section respectively.
Thus, if: the X-axis of accelerometer and the angle α of acceleration of gravity, the Y-axis and gravity acceleration g of accelerometer
Angle be β, the angle of accelerometer Z axis and gravity acceleration g is γ, and there are following relationships between above-mentioned each angle:
α=90 °-α 1；
β=90 °-β 1；
γ=90 °-γ 1.Then component of the gravity acceleration g in each axis direction are as follows:
Ax=g*cos α；
Ay=g*cos β；
Az=g*cos γ.:
Ax=g*cos α=g*cos (90 ° of-α 1)=g*sin α 1；
Ay=g*cos β=g*cos (90 ° of-β 1)=g*sin β 1；
Az=g*cos γ=g*cos (90 ° of-γ 1)=g*sin γ 1.
According to the acceleration change of the accelerometer that obtains of detection within a preset time: Ax1, Ay1, Az1 and Ax2,
The radian of accelerometer within a preset time can be calculated by above-mentioned calculating formula by simply substituting into operation in Ay2, Az2
Value variation α 11, β 11, γ 11 becomes and α 12, β 12, γ 12.
Further, in some embodiments, can by changing the setting angle between accelerometer and motion bar,
The acceleration for enabling at least one axis of the accelerometer respectively in three axis is zero, makes calculating motion bar in preset time section
Before interior change of pitch angle, the acceleration of accelerometer at least one axis in three axis respectively is zero, in order in simplification
The calculating process stated.For example, the motion bar vertical plane keeping parallelism with fixed metope always, makes motion bar perpendicular to metope
Planar movement, at this point, the angle-data of one of axis of accelerometer will not change, thus, it is possible to simplify calculating process.
Specifically, for example:
1) when Z axis acceleration is zero, the angle theta y of Y-axis and g is measured are as follows:
θ y=β 1*180/ π=[arctan (Ay/squr (Ax*Ax))] * 180/ π
2) when Y-axis acceleration is zero, the angle theta x of X-axis and horizontal plane is measured are as follows:
θ x=α 1*180/ π=[arctan (Ax/squr (Az*Az))] * 180/ π
3) when X-axis acceleration is zero, the angle theta z of Z axis and g is measured are as follows:
θ z=γ 1*180/ π=[arctan (Az/squr (Ay*Ay))] * 180/ π
In other some embodiments, angel measuring instrument may include goniometer, then is examined by obtaining goniometer
The angle of survey determines change of pitch angle of the motion bar in preset time section.Specifically, liquid level detector was actually using
Cheng Zhong, motion bar are articulated with fixture (such as wall) far from one end of float, and motion bar is equipped with one end and the float of float
The water surface is then floated on, at this point, motion bar can be at a certain angle between vertical direction (namely acceleration of gravity direction), because
This, is by the detection data of the goniometer, inclination angle of the available motion bar relative to acceleration of gravity direction.
Step S205: according to detection data and the length of motion bar, the change in elevation for calculating float is poor.
Further, it according to the length of the change of pitch angle and motion bar in preset time section of motion bar, calculates
The change in elevation of float is poor, and the change in elevation difference of float is the change in elevation of measured liquid level.For example, can be according to triangle
Functional relation know the distance between hinged end of liquid level and motion bar, change of pitch angle of the motion bar in preset time section with
And the relationship between the length L of motion bar, so that the change in elevation for calculating liquid level is poor.
Specifically, from above-mentioned calculating process it can be seen that, in preset time section, the inclination angle of motion bar by
θ 1 has changed to θ 2, and according to the length L of motion bar 10, the angel measuring instrument 50 of the application can calculate former and later two times
The change in elevation D of the water surface of point:
D=| L (COS θ 1-COS θ 2) |.
In some embodiments, after the detection data for obtaining angel measuring instrument, further whether judge current level
In metastable state, if being in metastable state, step S205 is continued to execute, if it is not, then persistently judging current liquid
Whether position is in metastable state, so that the result of level sensing is more stable and accurate.At this point, step S205 can wrap
It includes: obtaining the accelerometer acceleration value on three axis respectively, judge whether accelerometer is in stable according to acceleration value
State, if accelerometer is in stable state, the change in elevation for calculating float is poor.
Specifically, in some embodiments, if accelerometer respectively the acceleration value on tri- axis of X, Y, Z pre-
If the variable quantity in the time is respectively less than preset error value, it is determined that accelerometer is in stable state.Alternatively, in some embodiment party
In formula, quadratic sum (namely the Ax*Ax+Ay*Ay+Az* of the available accelerometer acceleration value on X, Y, Z axis respectively
Az)；If quadratic sum is equal to square (and g*g) of acceleration of gravity, and the variable quantity of quadratic sum within a preset time is less than default
Error amount, it is determined that accelerometer is in stable state.
Step S207: notification message is determined according to change in elevation difference, notification message is sent to and is connect with liquid level detector
Equipment.
Further, notification message includes: notification event corresponding with change in elevation difference, motion bar in preset time section
At least one of interior change of pitch angle, change in elevation difference, wherein notification event corresponding with change in elevation difference can be preset at
In liquid level detector, it can also be set by the user.For example, when the change in elevation difference of liquid level is greater than the upper limit of preset difference in height
When, corresponding notification event can be set as water level superelevation；When the change in elevation difference of liquid level is less than preset difference in height lower limit,
It is too low that corresponding notification event can be set as water level；Alternatively, when the change of pitch angle speed of motion bar is greater than pre-set velocity, it is right
The notification event answered can be set as, and SEA LEVEL VARIATION is too fast.
Liquid level detector determines corresponding notification event according to current liquid level change in elevation difference by control mould group, and leads to
Communications module is crossed to send a notification message to external device connected to it.
In the level measuring method that the application embodiment provides, the angle of rotation of motion bar is detected by angel measuring instrument
Degree, and then calculate the change in elevation difference of float to obtain the variation of liquid level, the precision calculated is higher, and stability compared with
It is good.Meanwhile the level measuring method, notification message can be determined according to the change in elevation difference of liquid level, notification message is sent to
The equipment connecting with liquid level detector improves the easy of level switch to allow user to grasp the changing condition of water level in real time
With property and reliability.
Referring to Fig. 8, based on above-mentioned liquid level detector 100 and level measuring method, the embodiment of the present application is also provided
A kind of liquid level emasuring device 200, liquid level emasuring device 200 is for executing level measuring method provided by the present application.In the application
In embodiment, liquid level emasuring device 200 is configured as by level sensing by the memory of storage liquid level detector 100
The one or more processors of device 100 execute.Liquid level emasuring device 200 includes detection module 201 and computing module 203.Inspection
It surveys module 201 and is used to obtain the detection data of angel measuring instrument, computing module 203 is used for according to detection data and motion bar
Length, the change in elevation for calculating float are poor.It is understood that above-mentioned each module can be to run on computer-readable storage medium
Program module in matter.
In some embodiments, detection module 201 is for obtaining goniometer angle detected, to allow computing module
According to goniometer angle detected, change of pitch angle of the motion bar in preset time section is determined.
Further, in some embodiments, computing module 203 is used for the detection data based on angel measuring instrument, really
Determine change of pitch angle of the motion bar in preset time section, is also used to the change of pitch angle according to motion bar in preset time section
And the length of motion bar, the change in elevation for calculating float are poor.
Further, in some embodiments, the angel measuring instrument includes accelerometer, and computing module 203 is used for
Obtain variation of the acceleration of accelerometer in preset time section；Obtain the acceleration and and accelerometer of accelerometer
Acceleration value on motion bar direction；According to the acceleration and and acceleration value, determine the motion bar when default
Between change of pitch angle in section.
Further, in some embodiments, motion bar is being calculated before the change of pitch angle in preset time section,
Computing module 203 is zero for enabling the acceleration of at least one axis of the accelerometer respectively in three axis.
Further, in some embodiments, computing module 203 is used to obtain accelerometer respectively on three axis
Acceleration value；Judge whether accelerometer is in stable state according to acceleration value；And if accelerometer is in stable state,
The change in elevation for then calculating float is poor.
Further, in some embodiments, computing module 203 is used to whether judge accelerometer according to acceleration value
In stable state, in which: if the variation of the acceleration value on three axis within a preset time is respectively less than accelerometer respectively
Preset error value, then computing module 203 determines that accelerometer is in stable state；Alternatively, computing module 203 accelerates for obtaining
Degree counts the quadratic sum of the acceleration value on three axis respectively；If quadratic sum is equal to square of acceleration of gravity, and quadratic sum exists
Variation in preset time is less than preset error value, then computing module 203 determines that accelerometer is in stable state.
Further, in some embodiments, liquid level emasuring device 200 can also include communication module 205, communicate mould
Block 205 is used to connect the smart machine of user, and for determining notification message according to change in elevation difference, notification message is sent to
The equipment being connect with liquid level detector, wherein notification message includes: notification event corresponding with change in elevation difference, change in elevation
At least one of difference.
Further, in some embodiments, communication module 205 is also used to what reception was connect with liquid level detector 100
The start command of the transmission of smart machine.Liquid level emasuring device 200 can also include starting module 207, starting module 207
Start angel measuring instrument according to start command.
Further, referring to Fig. 1, liquid level detector 100 provided by the present application is surveyed for running above-mentioned liquid level
Device 200 is measured, and executes above-mentioned level measuring method.Further, liquid level detector 100 is configured with one or more processing
Device, memory and one or more application program, wherein one or more application programs are stored in memory and are matched
It is set to and is performed by one or more processors, one or more programs are configurable for executing as provided by the embodiments of the present application
Level measuring method.
Further, based on above-mentioned liquid level detector 100, the present invention also provides a kind of water tank, which includes cabinet
With liquid level detector 100, the specific structure of the liquid level detector 100 is referring to above-described embodiment, since this water tank is using above-mentioned
Whole technical solutions of all embodiments, thus it is at least all beneficial to effect brought by the technical solution with above-described embodiment
Fruit, this is no longer going to repeat them.Wherein, the motion bar 10 of liquid level detector 100 is equipped with one end and the cabinet of angel measuring instrument 50
Inner wall it is hinged, motion bar 10 be equipped with float 30 one end extend in cabinet.
In order to reduce the installation difficulty of installation liquid level detector 100, the opening in cabinet is can be set in liquid level detector 100
Place.When liquid level detector 100 to be set to the opening of cabinet, it can avoid liquid level detector 100 and be soaked in water, can keep away
Exempt from when the waterproofness of liquid level detector 100 reduces, detection accuracy is influenced by water immersion, is conducive to improve liquid level detector
100 stability.
Further, the present invention also proposes a kind of water treatment facilities, which includes water tank, the water tank it is specific
Structure is referring to above-described embodiment, since this water treatment facilities uses whole technical solutions of above-mentioned all embodiments, until
All beneficial effects brought by technical solution with above-described embodiment less, this is no longer going to repeat them.Wherein, water process is set
Standby can be the equipment such as electric hot water bottle, water heater, water dispenser, Garment Steamer Machine, dehumidifier or air conditioner.Certainly, the application's is above-mentioned
Liquid level detector 100, can also be applied in other scenes, for example, in meteorological observation equipment, or be used for river water
In the detection device of position etc..
Further, the application also provides a kind of computer-readable storage medium of program code that can be performed with processor
Matter, program code make the level measuring method of processor execution any of the above-described.Referring to Fig. 9, Fig. 9 shows the application implementation
A kind of structural block diagram for computer readable storage medium 800 that example provides.Journey is stored in the computer readable storage medium 800
Sequence code, program code can be called by processor and execute method described in above method embodiment.
Computer readable storage medium 800 can be such as flash memory, EEPROM (electrically erasable programmable read-only memory),
The electronic memory of EPROM, hard disk or ROM etc.Optionally, computer readable storage medium 800 includes non-transient meter
Calculation machine readable storage medium storing program for executing (non-transitory computer-readable storage medium).It is computer-readable
Storage medium 800 has the memory space for the program code 810 for executing any method and step in the above method.These program generations
Code can read or be written to the production of this one or more computer program from one or more computer program product
In product.Program code 810 can for example be compressed in a suitable form.
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
Suddenly be that relevant hardware can be instructed to complete by program, program can store in a kind of computer readable storage medium
In, which when being executed, includes the steps that one or a combination set of embodiment of the method.In addition, in each embodiment of the application
Each functional unit can integrate in a processing module, be also possible to each unit and physically exist alone, can also be two
Or more than two units are integrated in a module.Above-mentioned integrated module both can take the form of hardware realization, can also be with
It is realized in the form of software function module.If integrated module is realized in the form of software function module and as independent
Product when selling or using, also can store in a computer readable storage medium.
In the description of this specification, the description of reference term " some embodiments ", " example ", " specific example " etc. means
Specific features described in conjunction with this embodiment or example or feature are contained at least one embodiment or example of the application.
In the present specification, the specific features of description or feature can be in any one or more of the embodiments or examples with suitable sides
Formula combines.In addition, without conflicting with each other, those skilled in the art can will be described in this specification different real
The feature for applying example or example and different embodiments or examples is combined.In addition, term " first ", " second " are only used
In description purpose, it is not understood to indicate or imply relative importance or implicitly indicates the number of indicated technical characteristic
Amount." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one of the features.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although
The application is described in detail with reference to the foregoing embodiments, those skilled in the art are when understanding: it still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；And
These are modified or replaceed, do not drive corresponding technical solution essence be detached from each embodiment technical solution of the application spirit and
Range.
Claims (12)
1. a kind of level measuring method, is characterized in that, it is applied to liquid level detector, the liquid level detector includes motion bar, sets
It is placed in the float of described motion bar one end and is set to the angel measuring instrument of the body of rod of the motion bar, which comprises
Obtain the detection data of the angel measuring instrument；And
According to the detection data and the length of the motion bar, the change in elevation for calculating the float is poor.
2. the method as described in claim 1, before the detection data for obtaining the angel measuring instrument, the method is also wrapped
It includes:
Receive the start command of the transmission for the equipment connecting with the liquid level detector；And
According to the start command, start the angel measuring instrument.
3. the method as described in claim 1, the detection data for obtaining the angel measuring instrument, comprising: be based on the angle
The detection data for spending measuring instrument, determines change of pitch angle of the motion bar in preset time section；
It is described according to the detection data and the length of the motion bar, the change in elevation for calculating the float are poor, comprising: root
According to the length of change of pitch angle and the motion bar of the motion bar in preset time section, the variation of the float is calculated
Difference in height.
4. method as claimed in claim 3, the angel measuring instrument includes goniometer, described based on the angel measuring instrument
Detection data determines change of pitch angle of the motion bar in preset time section, comprising: it is detected to obtain the goniometer
Angle determines change of pitch angle of the motion bar in preset time section.
5. method as claimed in claim 3, the angel measuring instrument includes accelerometer, described to be based on the angel measuring instrument
Detection data, determine change of pitch angle of the motion bar in preset time section, comprising:
Obtain variation of the acceleration of the accelerometer in preset time section；
Obtain the acceleration and and acceleration value of the accelerometer on motion bar direction of accelerometer；
According to the acceleration and and acceleration value, determine change of pitch angle of the motion bar in preset time section.
6. method as claimed in claim 5, the method also includes: determining the motion bar in preset time section
Before change of pitch angle, enabling the acceleration of at least one axis of the accelerometer respectively in three axis is zero.
7. method as claimed in claim 5, the change in elevation for calculating the float is poor, comprising:
Obtain acceleration value of the accelerometer respectively on three axis；
Judge whether the accelerometer is in stable state according to the acceleration value；And
If the accelerometer is in stable state, the change in elevation for calculating the float is poor.
8. the method for claim 7, described to judge whether the accelerometer is in stable according to the acceleration value
State, comprising:
If the variation of the acceleration value on three axis within a preset time is respectively less than preset error value to the accelerometer respectively,
Then determine that the accelerometer is in stable state；Alternatively,
Obtain the quadratic sum of acceleration value of the accelerometer respectively on three axis；
If the quadratic sum is equal to square of acceleration of gravity, and the variation of the quadratic sum within a preset time is less than default miss
Difference, it is determined that the accelerometer is in stable state.
9. such as method of any of claims 1-8, the method also includes:
It is described to determine that notification message, the notification message include: corresponding with the change in elevation difference according to the change in elevation difference
Notification event, at least one of the change in elevation difference；And
The notification message is sent to the equipment connecting with the liquid level detector.
10. a kind of liquid level emasuring device, which is characterized in that be applied to liquid level detector, the liquid level detector include motion bar,
It is set to the float of described motion bar one end and is set to the angel measuring instrument of the body of rod of the motion bar, the inclination angle measurement dress
It sets and includes:
Detection module, for obtaining the detection data of the angel measuring instrument；And
Computing module calculates the change in elevation of the float for the length according to the detection data and the motion bar
Difference.
11. a kind of liquid level detector characterized by comprising
Motion bar；
Float is set to one end of the motion bar；
Angel measuring instrument is set to the body of rod of the motion bar；And
One or more processors, memory and one or more application program, wherein one or more of application programs
It is stored in the memory and is configured as being executed by one or more of processors, one or more of programs are matched
It sets for executing level measuring method as claimed in any one of claims 1-9 wherein.
12. a kind of computer-readable storage medium, which is characterized in that be stored with program in the computer readable storage medium
Code, said program code can be called by processor and execute the level measuring method of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225032.4A CN110108335A (en) | 2019-03-22 | 2019-03-22 | Level measuring method, liquid level emasuring device, liquid level detector and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225032.4A CN110108335A (en) | 2019-03-22 | 2019-03-22 | Level measuring method, liquid level emasuring device, liquid level detector and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110108335A true CN110108335A (en) | 2019-08-09 |
Family
ID=67484537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910225032.4A Pending CN110108335A (en) | 2019-03-22 | 2019-03-22 | Level measuring method, liquid level emasuring device, liquid level detector and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110108335A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551230A (en) * | 2020-05-21 | 2020-08-18 | 上海星融汽车科技有限公司 | Method and system for detecting liquid level of oil tank in inclined state and vehicle-mounted terminal |
| CN113465696A (en) * | 2021-06-21 | 2021-10-01 | 中国原子能科学研究院 | Method and system for measuring liquid level of melt in container |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101004355A (en) * | 2006-12-19 | 2007-07-25 | 美的集团有限公司 | Liquid level meter and measuring method thereof |
| CN101441090A (en) * | 2007-11-23 | 2009-05-27 | 天地上海采掘装备科技有限公司 | Cutting height detection device of anchor digging winch cutting arm |
| CN201803765U (en) * | 2010-07-27 | 2011-04-20 | 刘军胜 | Wireless remote intelligent water-level observation gauge |
| CN202083442U (en) * | 2011-05-16 | 2011-12-21 | 山东科技大学 | Alarm device for monitoring abrupt change of water level |
| CN102721450A (en) * | 2012-06-27 | 2012-10-10 | 柳工常州挖掘机有限公司 | Fuel oil monitoring method and system for movable internal combustion equipment |
| CN102798453A (en) * | 2012-08-14 | 2012-11-28 | 昆山大百科实验室设备工程有限公司 | Novel electronic balance |
| CN103438962A (en) * | 2013-09-22 | 2013-12-11 | 王庭洪 | Water level detection device for water tank of non-pressure-bearing water heater |
| CN103575335A (en) * | 2013-11-11 | 2014-02-12 | 东北农业大学 | Transmission tower on-line monitoring system |
| CN104061983A (en) * | 2014-07-03 | 2014-09-24 | 胡桂标 | Tilting pendulum type float ball liquid level meter |
| CN203949708U (en) * | 2014-06-19 | 2014-11-19 | 北京江河瑞通技术发展有限公司 | A kind of radar type water-level gauge based on acceleration transducer correction water level value |
| CN104264770A (en) * | 2014-09-22 | 2015-01-07 | 国家电网公司 | Power distribution room water logging alarming and automatic draining system and control method thereof |
| CN106679766A (en) * | 2017-03-03 | 2017-05-17 | 西安君晖航空科技有限公司 | Non-contact type liquid-level detecting device for non-magnetic material container |
| CN109470209A (en) * | 2018-11-20 | 2019-03-15 | 北京源清慧虹信息科技有限公司 | A kind of inclination angle measurement method based on three axis accelerometer |
-
2019
- 2019-03-22 CN CN201910225032.4A patent/CN110108335A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101004355A (en) * | 2006-12-19 | 2007-07-25 | 美的集团有限公司 | Liquid level meter and measuring method thereof |
| CN101441090A (en) * | 2007-11-23 | 2009-05-27 | 天地上海采掘装备科技有限公司 | Cutting height detection device of anchor digging winch cutting arm |
| CN201803765U (en) * | 2010-07-27 | 2011-04-20 | 刘军胜 | Wireless remote intelligent water-level observation gauge |
| CN202083442U (en) * | 2011-05-16 | 2011-12-21 | 山东科技大学 | Alarm device for monitoring abrupt change of water level |
| CN102721450A (en) * | 2012-06-27 | 2012-10-10 | 柳工常州挖掘机有限公司 | Fuel oil monitoring method and system for movable internal combustion equipment |
| CN102798453A (en) * | 2012-08-14 | 2012-11-28 | 昆山大百科实验室设备工程有限公司 | Novel electronic balance |
| CN103438962A (en) * | 2013-09-22 | 2013-12-11 | 王庭洪 | Water level detection device for water tank of non-pressure-bearing water heater |
| CN103575335A (en) * | 2013-11-11 | 2014-02-12 | 东北农业大学 | Transmission tower on-line monitoring system |
| CN203949708U (en) * | 2014-06-19 | 2014-11-19 | 北京江河瑞通技术发展有限公司 | A kind of radar type water-level gauge based on acceleration transducer correction water level value |
| CN104061983A (en) * | 2014-07-03 | 2014-09-24 | 胡桂标 | Tilting pendulum type float ball liquid level meter |
| CN104264770A (en) * | 2014-09-22 | 2015-01-07 | 国家电网公司 | Power distribution room water logging alarming and automatic draining system and control method thereof |
| CN106679766A (en) * | 2017-03-03 | 2017-05-17 | 西安君晖航空科技有限公司 | Non-contact type liquid-level detecting device for non-magnetic material container |
| CN109470209A (en) * | 2018-11-20 | 2019-03-15 | 北京源清慧虹信息科技有限公司 | A kind of inclination angle measurement method based on three axis accelerometer |
Non-Patent Citations (1)
| Title |
|---|
| 徐晓翔 等: ""基于三轴加速度传感器的倾角测量***的设计"", 《传感器世界》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551230A (en) * | 2020-05-21 | 2020-08-18 | 上海星融汽车科技有限公司 | Method and system for detecting liquid level of oil tank in inclined state and vehicle-mounted terminal |
| CN113465696A (en) * | 2021-06-21 | 2021-10-01 | 中国原子能科学研究院 | Method and system for measuring liquid level of melt in container |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209623718U (en) | Patrol robot positioning system | |
| CN106768043B (en) | Ocean multi-parameter profile measuring instrument | |
| CN110108335A (en) | Level measuring method, liquid level emasuring device, liquid level detector and storage medium | |
| CN203349841U (en) | Ship wave movement detection device | |
| CN110104125B (en) | Buoy system is surveyd to ocean wave | |
| CN202141736U (en) | Three-dimensional wind-speed and wind-direction measuring device | |
| CN109975801A (en) | Object mark detection device, learning device, object mark detection method and recording medium | |
| CN107764248A (en) | A kind of acoustic wave tide measuring instrument and measuring method | |
| CN207570541U (en) | A kind of acoustic wave tide measuring instrument | |
| CN112394349A (en) | Intelligent security monitoring method, device and system for ocean buoy and storage medium | |
| CN207780253U (en) | A kind of water-system control system of list buoy towing cable form monitoring | |
| CN201984080U (en) | Movable type ultrasonic wave anemorumbograph | |
| CN106017419B (en) | Horizontal universal angle measuring device and measuring method | |
| CN103383254B (en) | Ship shakes dipmeter | |
| CN205580383U (en) | Portable three dimensional laser scanner | |
| CN114620186A (en) | Miniaturized ocean wave measurement buoy device and wave measurement and wind factor retrieval method | |
| CN207894441U (en) | Air data system ground transaucer test equipment | |
| CN211230714U (en) | Engine room displacement monitoring device of wind generating set | |
| CN109490578A (en) | A kind of far-reaching extra large aquaculture net cage heave movement acceleration monitoring device | |
| CN207894954U (en) | A kind of water surface flow rate detection system under high water condition | |
| CN108107234A (en) | Water surface flow rate detection system and its detection method under a kind of high water condition | |
| CN207636086U (en) | A kind of autonomous type opening self-detective instrument | |
| JP6052090B2 (en) | Magnetic measurement system | |
| CN202582460U (en) | Angle indicator and crane equipped therewith | |
| CN103245964A (en) | Ship attitude composite detection device and detection method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190809 |
|
| RJ01 | Rejection of invention patent application after publication |