CN109459116A - The limnimeter of high precision monitor - Google Patents
The limnimeter of high precision monitor Download PDFInfo
- Publication number
- CN109459116A CN109459116A CN201811308757.1A CN201811308757A CN109459116A CN 109459116 A CN109459116 A CN 109459116A CN 201811308757 A CN201811308757 A CN 201811308757A CN 109459116 A CN109459116 A CN 109459116A
- Authority
- CN
- China
- Prior art keywords
- limnimeter
- control mainboard
- movable block
- guide
- floating
- 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.)
- Granted
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
- G01F23/64—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 of the free float type without mechanical transmission elements
- G01F23/68—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 of the free float type without mechanical transmission elements using electrically actuated indicating means
- G01F23/686—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 of the free float type without mechanical transmission elements using electrically actuated indicating means using opto-electrically actuated indicating means
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The present invention relates to the technical fields of limnimeter, disclose the limnimeter of high precision monitor, including pedestal, guide rail and linear displacement transducer, and guide rail connection in a vertical shape on the base, is connected with movable block, linear displacement transducer is connected to movable block on guide rail；Measuring staff is connected on movable block, the lower end of measuring staff has the stylus for back and forth touching water；Linear displacement transducer is electrically connected with for controlling movable block movement and realizes the control mainboard of level measuring by reading linear displacement transducer relative displacement data.Movable block is controlled by control mainboard to move up and down, realizes that the up and down reciprocatingly touching water of stylus and floating baton round move up and down in arc groove bar, and control mainboard is then directly realized by the measurement to water level by the relative shift of reading linear displacement transducer；Since the straight-line displacement data that control mainboard obtains can then be directly obtained the numerical value of water level in this way, not needing then to carry out conversion calculating, the precision of measurement is greatly improved.
Description
Technical field
The present invention relates to the technical field of limnimeter more particularly to the limnimeters of high precision monitor.
Background technique
Limnimeter is measuring instrument indispensable in three work physical experiments, in such a way that instrument perceives the water surface, Ke Yifen
For submerged, vibration touching ability of swimming and non-touch ability of swimming three types.
Non-touch ability of swimming limnimeter not yet meets real requirement in terms of cost performance, and submerged is in practical operation, often by each
The influence of kind drift, measurement accuracy are difficult to meet the requirements, and therefore, generally use vibration touching ability of swimming at present.
Using the limnimeter of vibration touching ability of swimming, it is necessary to displacement of the lines-power converter is used, and rotational angle displacement type converts
Device, required a set of high-precision wire-angular displacement mechanical switching device such as screw rod etc. if synchronous motor or code-disc limnimeter, this
Sample, for limnimeter, such structure directly influences limnimeter water level transfer linearity degree, tracking velocity, mechanical life
With the overall target of apparatus structure etc., also, for limnimeter, the precision for measuring SEA LEVEL VARIATION is relatively low, difficult
To meet actual demand.
Summary of the invention
The purpose of the present invention is to provide the limnimeters of high precision monitor, it is intended to solve limnimeter in the prior art and deposit
In the low problem of measurement SEA LEVEL VARIATION precision.
The invention is realized in this way the limnimeter of high precision monitor, including pedestal, guide rail and straight-line displacement sensing
Device, the guide rail is in a vertical shape to be connected on the pedestal, is connected on the guide rail and is moved up and down along the guide rail
Movable block, the linear displacement transducer are connected to the movable block；It is connected on the movable block and is disposed to extend vertically downward
Measuring staff, the lower end of the measuring staff has the stylus for back and forth touching water；The linear displacement transducer, which is electrically connected with, to be used for
It is mobile and by the reading linear displacement transducer relative displacement data realization level measuring to control the movable block
Control mainboard, the control mainboard and the stylus are electrically connected；The limnimeter includes vertical bar, and the vertical bar is in a vertical shape
It is connected on the pedestal, scale face is formed on the side wall of the vertical bar；The linear displacement transducer includes being formed in institute
The scale grating and reading head on scale face are stated, the reading head is connected to the movable block, and is set to the scale face
Front side, the reading head includes infrared electro element, square wave reshaper and indication grating, the indication grating with it is described
Scale grating is positioned opposite, and has gap between the two；The reading head is electrically connected at the control mainboard, and described
Control mainboard realizes level measuring by reading the relative displacement data of the reading head；The lower end of the measuring staff is set
It is equipped with link block, the link block has the lower end surface arranged downward, the spherical shape in the lower end surface of the link block, the company
The middle part for connecing the lower end surface of block forms least significant end, and the least significant end of the lower end surface of the link block is arranged in the stylus；The company
The lower end surface for connecing block is provided with arc groove bar, along direction from bottom to top, the arc groove bar by the link block lower end surface
Least significant end be disposed to extend upward, the floating plastics that move up and down along the arc groove bar of stress are equipped in the arc groove bar
Ball, the floating baton round are hollow setting, are provided with displacement sensor, institute's displacement sensors in the floating baton round
It is electrically connected with control mainboard；After the movable block drives the measuring staff to move downward, until stylus touching water and modeling of floating
After pellet is moved upwardly by by buoyancy-driven, the movable block drives the measuring staff to be moved upwardly by, until stylus be detached from the water surface and
Floating baton round is reset to the bottom of arc groove bar downward.
Further, along direction from bottom to top, the depth of the arc groove bar is gradually deepened.
Further, the bottom of the arc groove bar is provided with guide-track groove, and the guide-track groove is along the arc groove bar
Length extending direction is disposed to extend, and the floating baton round is convexly equipped with the positioning column moved along the guide-track groove, the positioning
Column is movably placed in the guide-track groove.
Further, the floating baton round has the bottom face arranged downward, and the bottom face of the floating baton round is in
Smooth shape, institute's displacement sensors are provided with the inside of the floating baton round, and are located at the bottom of the floating baton round.
Further, the lower end of the link block and the measuring staff is rotatablely connected, and the link block is with the measuring staff
Central axis.
Further, the edge of the lower end surface of the link block, which extends outwardly, outer ring plate, and the outer ring plate is around described
The periphery of the lower end surface of link block arranges that the outer ring plate decurvation is arranged, and under the outer ring surface and the link block
The outer groove of lower ending opening is enclosed between end face, the outer groove is arranged around the periphery of the link block lower end surface.
Further, zero point window is respectively formed in the scale grating and indication grating；Have in the control mainboard
Enter the frequency modulation and locking phase loop member in water reaction time for shortening the stylus.
Further, the control mainboard include touching water trigger, the touching water trigger respectively with the stylus and
Control mainboard is electrically connected.
Further, the upper end of the vertical bar is equipped with for limiting the upper limit of the reading head towards moving limit position
Bit switch, the lower end of the vertical bar is equipped with opens for limiting the digital lower limit for reading moving limit position upside down
It closes, the upper limit switch and digital lower position switch are electrically connected in the control mainboard.
Further, the guide rail pass through the movable block, and the limnimeter of the high precision monitor include for pair
It is oriented to the guide frame of the movement of the movable block；The guide frame includes guide pad and is arranged on the pedestal
Guide rod, the guide rod are arranged vertically, and guide groove is equipped in the guide rod, and the guide groove is along the guide rod
Length direction be disposed to extend；The side of the movable block protrudes outwardly, forms the guide pad, and the guide pad activity is set
In the guide groove.
Compared with prior art, in the limnimeter of above-mentioned offer, movable block is controlled by control mainboard and is moved up and down, it is real
The up and down reciprocatingly touching water and floating baton round of existing stylus move up and down in arc groove bar, also, the movement of movable block, drive
The linear movement up and down of linear displacement transducer, in this way, relative displacement of the control mainboard by reading linear displacement transducer
Amount, then can be directly realized by the measurement to water level；Due to the straight-line displacement data that control mainboard obtains, rather than the prior art
In circular-rotation data can then be directly obtained the numerical value of water level in this way, not needing then to carry out conversion calculating, also,
Erroneous judgement is avoided by moving up and down for floating baton round, greatly improves the precision of measurement.
Detailed description of the invention
Fig. 1 is the schematic front view one of the limnimeter of high precision monitor provided in an embodiment of the present invention；
Fig. 2 is the schematic front view two of the limnimeter of high precision monitor provided in an embodiment of the present invention；
Fig. 3 is the elevational schematic view of the link block of the limnimeter of high precision monitor provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of linear displacement transducer output signal sequence provided in an embodiment of the present invention；
Fig. 5 is the circuit control schematic diagram of the limnimeter of high precision monitor provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments,
The present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain this hair
It is bright, it is not intended to limit the present invention.
Realization of the invention is described in detail below in conjunction with specific embodiment.
Show referring to figs. 1 to Fig. 5, is preferred embodiment provided by the invention.
The limnimeter of high precision monitor provided in this embodiment, water level and SEA LEVEL VARIATION etc. for measuring river.
Limnimeter includes pedestal 101, guide rail 105, control mainboard 104 and linear displacement transducer, wherein pedestal 101
As the supporting table of entire limnimeter, guide rail 105 is connected on pedestal 101, is arranged vertically, and the lower end of guide rail 105 is connected to
On pedestal 101, upper end is disposed to extend vertically upward；Movable block 106 is connected on guide rail 105, which can edge
Guide rail 105 move up and down, linear displacement transducer is connected on movable block 106, in this way, as movable block 106 is along guide rail
105 move up and down, and linear displacement transducer also can move up and down.
In the present embodiment, the movable block 106 on guide rail 105 is also connected with measuring staff 110, which is arranged vertically,
The upper end is connected on movable block 106, and lower end is disposed to extend downward, and is formed with stylus 111 in the lower end of measuring staff 110, this
Sample, when movable block 106 is moved up and down along guide rail 105, entire measuring staff 110 also moves up and down therewith.
In the present embodiment, including further including vertical bar 108, vertical bar 108 is connected on pedestal 101 limnimeter, and in a vertical shape
Arrangement, in this way, vertical bar 108 and the adjacent parallel arrangement of guide rail 105, lower end are connected on pedestal 101, upper end extends vertically upward
Arrangement.
Linear displacement transducer includes scale grating 109 and reading head 107, wherein is formed on the side wall of vertical bar 108
There is scale face, which is disposed to extend along the length direction of vertical bar 108, and scale grating 109 is then formed in vertical bar 108
On scale face, and it is disposed to extend along the length direction of vertical bar 108, that is, be disposed to extend along vertical direction；Reading head
107 are arranged in the front side in the scale face of vertical bar 108, are electrically connected with control mainboard 104, and be connected on movable block 106,
Moving and move up and down with movable block 106, reading head 107 include infrared electro element, square wave reshaper and instruction light
Grid, wherein face is arranged between indication grating and scale grating 109, and there is gap between the two.Reading head 107 electrically connects
It is connected to control mainboard, and control mainboard realizes level measuring by reading the relative displacement data of reading head 107.
The lower end of measuring staff 110 is provided with link block 120, and link block 120 has the lower end surface arranged downward, link block
The spherical shape in 120 lower end surface, the middle part of the lower end surface of link block 120 form least significant end, and stylus 111 is arranged in link block 120
Lower end surface least significant end；The lower end surface of link block 120 is provided with arc groove bar 126, along direction from bottom to top, arc groove
Item 126 is disposed to extend upward by the least significant end of the lower end surface of link block 120, and stress arcuately groove bar is equipped in arc groove bar 126
The 126 floating baton rounds 122 moved up and down, floating baton round 122 are hollow setting, are provided with displacement in floating baton round 122
Sensor, displacement sensor and control mainboard are electrically connected；After movable block 106 drives measuring staff 110 to move downward, until surveying
After the touching water of needle 111 and floating baton round 122 are moved upwardly by by buoyancy-driven, movable block 106 drives measuring staff 110 to be moved upwardly by,
Until stylus 111 is detached from the water surface and floating baton round 122 is reset to the bottom of arc groove bar 126,111 stylus of stylus downward
111 carry out repeatedly.
Above-mentioned movable block 106 is moved up and down by control mainboard control, the stylus 111 of measuring staff 110 and straight-line displacement sensing
Device is also electrically connected in control mainboard, and control mainboard is by detecting whether stylus 111 touches water and floating baton round 122
Whether it is moved upwardly by, and then controls about 106 movable block and correspond to, also, control mainboard is by reading linear displacement transducer
Relative shift, and then realize the measurement to water level.
In the limnimeter of above-mentioned offer, movable block 106 is controlled by control mainboard and is moved up and down, realizes the upper of stylus 111
Lower reciprocal touching water moving up and down with the baton round 122 that floats, also, the movement of movable block 106, drive linear displacement transducer
Linear movement up and down then can be directly real in this way, control mainboard is by reading the relative shift of linear displacement transducer
Now to the measurement of water level；Due to the straight-line displacement data that control mainboard obtains, rather than circular-rotation number in the prior art
According in this way, do not need then to carry out conversion calculating, then the numerical value of water level can be directly obtained, also, pass through floating baton round
122 move up and down avoids erroneous judgement, greatly improves the precision of measurement.
In the present embodiment, along direction from bottom to top, the depth of arc groove bar 126 is gradually deepened, in this way, convenient for floating
The floating of baton round 122 avoids being stuck, leads to erroneous judgement.
The bottom of arc groove bar 126 is provided with guide-track groove 125, and guide-track groove 125 extends along the length of arc groove bar 126
Direction is disposed to extend, and floating baton round 122 is convexly equipped with the positioning column moved along guide-track groove 125, and positioning column is movably placed in guide rail
In slot 125, in this way, float ball during moving up and down, avoids rolling, but translated along arc groove bar 126
Movement, further enhances measurement accuracy.
Floating baton round 122 has the bottom face arranged downward, and the bottom face of floating baton round 122 is flat, displacement
Sensor is provided with the inside of the floating baton round 122, and is located at the bottom of floating baton round 122, in this way, when modeling of floating
After pellet 122 touches water, its buoyancy can be increased to greatest extent, so that the reaction time that floating baton round 122 floats is very fast,
And displacement sensor can move at the first time, feedback signal to control mainboard.
The lower end of link block 120 and measuring staff 110 is rotatablely connected, and link block 120 is central axis with measuring staff 110, this
Sample, when being stuck in case of floating baton round 122 is mobile, due to the surrounding discontinuity of link block 120, link block 120
It then can rotate, by rotating automatically, stuck floating baton round 122 can be loosened, achieve the effect that voluntarily to correct.
The edge of the lower end surface of link block 120, which extends outwardly, outer ring plate 121, and outer ring plate 121 is around link block 120
The periphery of lower end surface arranges that 121 decurvation of outer ring plate is arranged, and is enclosed between outer ring surface and the lower end surface of the link block 120
The outer groove 123 for forming lower ending opening is closed, outer groove 123 is arranged around the periphery of 120 lower end surface of link block.
Due to the possible ups and downs of the water surface, in this way, can be kept away by forming outer groove 123 in the periphery of link block 120
Exempt from heave, surrounding external diffusion of the water to link block 120, under the limitation of outer groove 123, can more preferable effect drive
Moving up and down for dynamic floating baton round 122, greatly increases precision.
Movable balls are additionally provided in the inside of floating baton round 122, in this way, when floating baton round 122 is in arc groove bar
During moving downward in 126, movable balls can increase the lapse rate of floating baton round 122, and avoid in tenesmus
Floating baton round 122 is stuck during moving downward.
In the present embodiment, zero point window is respectively formed in scale grating 109 and indication grating, in this way, when two zero
When point window is overlapped, only one zero point pulse signal RI in gamut scope will be generated.
In the present embodiment, when movable block 106 is moved up and down along guide rail 105, reading head 107 and measuring staff 110 are also therewith
It moves up and down, when stylus 111 is contacted with the water surface, control mainboard 104 controls movable block 106 and is moved upwardly by, when stylus 111 is de-
After the water surface, movable block 106 then and is downward moved, and is carried out repeatedly.
According to geometric optical theory, during linear propagation of light, light is such as above-mentioned in two blocks of gratings by coinciding
Scale grating 109 and indication grating, the line of the intersection point of shading striped or light transmission striped form the bright line of a light transmission,
And the line of the intersection point of shading striped and light transmission striped forms a lighttight concealed wire, these bright concealed wires are referred to as More's item
Line, the width and trigonometric function characteristic of moire frange signal are then adjusted by grid line angle.
Axial for x with scale grating 109, vertical direction y then obtains Moire fringe equation:
In formula: the corresponding stripe of each k value.
The slope of Moire fringe are as follows:
The spacing of Moire fringe are as follows:
Therefore it be by striped slope is tg that scale grating 109 and indication grating, which are formed by Moire fringe when coinciding,
ε, fringe spacing are formed by a bunch of parallel lines of W.
When the angle θ very little, Moire fringe is substantially perpendicular with grating grid direction, and W > > d, i.e. Moire fringe spacing
There is amplification to grating pitch, this infrared electro element more much bigger than pitch to diameter is very beneficial.
When reading head 107 is relatively moved along 109 axis of scale grating, infrared electro element generates Sin sine and Cos
Cosine signal, through square wave reshaper, the bis- road electric pulse square-wave signal sequence of A, B that phase difference output is 90 °.107 phase of reading head
As soon as to the mobile pitch of scale grating 109, one square-wave pulse with direction character signal of output, by control mainboard
The relative shift of the reading head 107 that calculates that you can get it of 104 pairs of pulse signals.In scale grating 109 and indication grating ruler face
On be also respectively scored with a zero point window, when two windows are completely coincident, will generate gamut scope in only one zero point pulse letter
Number RI.Using RI as coordinate origin, then linear displacement transducer just becomes one-dimensional coordinate measuring system:
107 coordinate x=pitch d of reading head × ∑ (± square-wave pulse number)
When reading head 107 is moved along positive direction, 90 ° of the advanced B square-wave pulse of A square-wave pulse, when reading head 107 is along anti-
When direction is mobile, A square-wave pulse falls behind 90 ° of B square-wave pulse.It is electronic fine-grained using one times, that is, utilize square-wave signal edging trigger
It counts, two triggerings can be generated in a pitch, the linear displacement transducer resolution ratio of 0.02mm pitch is increased to
0.01mm.Incremental Grating Digital encoder measuring principle is explained above, SEA LEVEL VARIATION not only intuitive conjunction again is directly measured with it
It is suitable.
In actual operation, it when limnimeter is switched on every time, after reading head 107 moves up, then moves down.Make
Scale grating 109 is overlapped with the zero point window of indication grating, that is, after searching out zero point RI, limnimeter is to enter stylus 111
The tracking working method for up and down reciprocatingly repeating touching water picks up water level value in the moment that stylus 111 touches water every time, it is, control
Mainboard 104 obtains the relative shift of reading head 107 moved up and down by the calculating of the output signal to reading head 107,
And then the accomplished measurement to water level.
Metrological grating technology is used in limnimeter, is had the advantage that
1), scale grating 109 and indication grating belong to high-precision optical device, dividing precision can achieve ± 10 μm/
M solves the problems, such as limnimeter high-precision and resists strongly disturbing；
2) contactless structure, is used between scale grating 109 and indication grating, greatly prolongs phase service life；
3), moire frange signal is formed by by 125 grid lines, wherein the scoring errors of individual grid lines or other
It is very small on the influence of the location and shape of entire Moire fringe to shelter leakage:
4), coordinate calculates the phase discriminating technology and Correlation Analysis Technique for using pulse, and there is very strong resistance to mechanical to shake energy
Power；
5), using subdivision technology, improving resolution ratio can be obtained biggish serious forgiveness under identical precision.
In addition, there is frequency modulation and locking phase loop member, in this way, can then greatly shorten measuring staff 110 in control mainboard 104
Stylus 111 enter the water reaction time, influence and wrong report of the surface tension of water to stylus 111 are eliminated, as long as in this way, stylus 111
One touches the water surface, and control mainboard 104 then controls movable block 106 and is quickly moved upwardly by, so that the disengaging of stylus 111 is contacted with water；When
When stylus 111 is detached from and water contacts, control mainboard 104 then controls movable block 106 and quickly moves downward, until stylus 111 and water
Contact, and so on operates, not only can accurately measure water level, and can reduce stylus 111 and water reaction time to measurement
The influence of precision.
In the present embodiment, the screening of the 0.01mm wide of multiple parallel equidistants is carved in scale grating 109 and indication grating respectively
Striations and light transmission striped.Certainly, according to actual needs, the width of shading striped and light transmission striped is also possible to other numerical value,
It is not limited to above-mentioned 0.01mm.
When limnimeter works normally, indication grating ruler face and 109 keeping parallelism of scale grating are in 0.02mm~0.05mm
Gap, and inclined arrangement between scale grating 109 and indication grating keep a very little angle theta between the two.
In the present embodiment, control mainboard 104 includes touching water trigger, the stylus of the touching water trigger and measuring staff 110
111 are electrically connected, and can shorten stylus 111 and enter the water reaction time；Control mainboard 104 also has communication element, is used for and outside
Equipment is communicated.
Specifically, limnimeter also has keyboard, display.Control mainboard 104 uses the STM32F103 of ARM7 kernel, is
System working frequency is increased to 72MHz, and the purpose is to reduce number of elements, hardware-software to the greatest extent and improve operational efficiency.Control
Mainboard 104 is responsible for communication, keyboard commands, display, the control of motor 102,107 displacement of linear displacement transducer reading head are sentenced
Not, coordinate calculates, water level value picks up and linear displacement transducer fault diagnosis.To reduce hardware spending to greatest extent, according to hard
Part software implementation principle, linear displacement transducer step-by-step counting use signal edge hardware trigger, software filtering, sentence to add
Subtract operation.
The precision of limnimeter in addition to being influenced by linear displacement transducer resolution ratio and pulse signal calculation process quality,
Also influenced by touching water trigger.In the design of this limnimeter, touching water trigger is using touching water frequency conversion, the side of phaselocked loop frequency discrimination
Method touches water signal to measure stylus 111, and this design can be effectively suppressed false triggering caused by above-mentioned water body interference, avoid out
There is the abnormal phenomenon of work in existing limnimeter.
Linear displacement transducer provided in this embodiment is grating encoder, and certainly, linear displacement transducer is also possible to
Other a variety of encoders, alternatively, the sensor etc. of linear displacement detecting may be implemented in other.
In the present embodiment, guide rail 105 is arranged in the side of vertical bar 108, and movable block 106 is connected to the side of reading head 107
Side, in this way, during driving reading head 107 moves up and down, avoiding 106 pairs of movable block readings when movable block 106 moves up and down
It is impacted between several 107 and vertical bar 108.
In addition, being equipped with upper limit switch in the upper end of vertical bar 108, which electrically connects with control mainboard 104
It connects, in this way, when meeting the upper limit switch, then can move downward when reading head 107 is moved upwardly by, that is, guarantees to read
Several 107 extreme positions being moved upwardly by.
It is equipped with digital lower position switch in the lower end of vertical bar 108, which is electrically connected control master
Plate 104, the extreme position that can be moved downward to reading head 107 are limited and are positioned.
In the present embodiment, guide rail 105 passes through movable block 106, in this way, movable block 106 then can be along about 105 guide rail
It is mobile.In addition, in the present embodiment, limnimeter further includes guide frame in order to further ensure the guiding of the movement of movable block 106,
It is oriented to for the movement to movable block 106.
Specifically, guide frame includes the guide rod and guide pad being arranged on pedestal 101, and the guide rod is in vertical
Arrangement, and guide groove is equipped in the guide rod, which is disposed to extend along the length direction of guide rod, is also in vertical cloth
It sets；The side of movable block 106 protrudes outwardly, forms above-mentioned guide pad, which is movably placed in guide groove, and when shifting
When motion block 106 moves up and down, guide pad can be moved up and down along guide groove, be played so as to the movement to movable block 106
The effect of guiding.
In the present embodiment, limnimeter further includes dynamical element, and the dynamical element is for driving movable block 106 along guide rail
105 move up and down, to drive moving up and down for reading head 107.Dynamical element and control mainboard 104 are electrically connected, thus,
The running of dynamical element is controlled by control mainboard 104, and then controls the movement of movable block 106.
Specifically, dynamical element includes motor 102 and belt transmission structure, and belt transmission structure includes synchronizing wheel
And synchronous belt 112, wherein motor 102 is connect with control mainboard 104, is controlled and is operated by control mainboard 104, motor 102
Output shaft and belt transmission structure synchronizing wheel connect, for driving synchronizing wheel to rotate, synchronous belt 112 is connected to synchronization
On wheel, mobile by synchronous wheel drive, movable block 106 is connect with synchronous belt 112, in this way, pass through the movement of synchronous belt 112,
Driving movable block 106 moves up and down.
In the present embodiment, the upper end of measuring staff 110 is connected on movable block 106, and measuring staff 110 passes through pedestal 101, downward
Extend, stylus 111 is placed in 101 lower section of pedestal, in this way, measuring staff 110 is also movable in pedestal when movable block 106 moves up and down
It is walked in 101, in this way, the effect that can be oriented to measuring staff 110 using pedestal 101.
It during actual measurement, needs that limnimeter is fixed position, in the present embodiment, is connected on pedestal 101
Multiple installation feet, multiple installation foot one end are connected on pedestal 101, and the other end is disposed to extend outside towards pedestal 101, in this way, working as
When needing that installation is fixed to limnimeter, then can directly it be connect using installation foot with external structure, so that entire water
Position instrument is fixed.
In addition, control mainboard 104 is arranged on pedestal 101, and is provided with panel 103 on pedestal 101, the panel 103
It is arranged in the outside of control mainboard 104, and positioned opposite with control mainboard 104, in this way, when user needs to carry out limnimeter
When control operation, by operation button etc. on panel 103, then the operation to control mainboard 104 may be implemented, can both protect
Control mainboard 104 is protected, operation also facilitates.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. the limnimeter of high precision monitor, which is characterized in that including pedestal, guide rail and linear displacement transducer, the guide rail
It is in a vertical shape to be connected on the pedestal, the movable block moved up and down along the guide rail is connected on the guide rail, it is described
Linear displacement transducer is connected to the movable block；The measuring staff being disposed to extend vertically downward is connected on the movable block, it is described
The lower end of measuring staff has the stylus for back and forth touching water；The linear displacement transducer is electrically connected with for controlling the movement
Block is mobile and the control mainboard of level measuring is realized by reading the linear displacement transducer relative displacement data, described
Control mainboard and the stylus are electrically connected；The limnimeter includes vertical bar, and the vertical bar is in a vertical shape to be connected to the pedestal
On, scale face is formed on the side wall of the vertical bar；The linear displacement transducer includes the mark being formed on the scale face
Ruler grating and reading head, the reading head is connected to the movable block, and is set to the front side in the scale face, the reading head
Including infrared electro element, square wave reshaper and indication grating, the indication grating and the scale grating are positioned opposite, and
There is gap between the two；The reading head is electrically connected at the control mainboard, and the control mainboard passes through described in reading
The relative displacement data of reading head realize level measuring in turn；The lower end of the measuring staff is provided with link block, the link block
With the lower end surface arranged downward, the spherical shape in the lower end surface of the link block, the middle part of the lower end surface of the link block is formed
The least significant end of the lower end surface of the link block is arranged in least significant end, the stylus；The lower end surface of the link block is provided with arc
Groove bar, along direction from bottom to top, the arc groove bar is disposed to extend upward by the least significant end of the lower end surface of the link block, institute
It states and is equipped with the floating baton round that stress is moved up and down along the arc groove bar in arc groove bar, the floating baton round is hollow sets
It sets, displacement sensor is provided in the floating baton round, institute's displacement sensors and control mainboard are electrically connected；When the shifting
After motion block drives the measuring staff to move downward, until after stylus touching water and floating baton round are moved upwardly by by buoyancy-driven, institute
Stating movable block drives the measuring staff to be moved upwardly by, until stylus is detached from the water surface and floating baton round is reset to arc groove bar downward
Bottom.
2. the limnimeter of high precision monitor as described in claim 1, which is characterized in that along direction from bottom to top, the arc
The depth of shape groove bar is gradually deepened.
3. the limnimeter of high precision monitor as claimed in claim 2, which is characterized in that the bottom of the arc groove bar is provided with
Guide-track groove, the guide-track groove are disposed to extend along the length extending direction of the arc groove bar, and the floating baton round is convexly equipped with
Along the positioning column that the guide-track groove moves, the positioning column is movably placed in the guide-track groove.
4. the limnimeter of high precision monitor as claimed in claim 3, which is characterized in that the floating baton round has cloth downward
The bottom face of the bottom face set, the floating baton round is flat, and institute's displacement sensors are provided with the floating baton round
Inside, and be located at the floating baton round bottom.
5. such as the limnimeter of the described in any item high precision monitors of Claims 1-4, which is characterized in that the link block and institute
The lower end rotation connection of measuring staff is stated, the link block is using the measuring staff as central axis.
6. such as the limnimeter of the described in any item high precision monitors of Claims 1-4, which is characterized in that under the link block
The edge of end face, which extends outwardly, outer ring plate, and the outer ring plate is arranged around the periphery of the lower end surface of the link block, described outer
Ring plate decurvation arrangement, and the outer ring of lower ending opening is enclosed between the outer ring surface and the lower end surface of the link block
Slot, the outer groove are arranged around the periphery of the link block lower end surface.
7. as the described in any item high precision monitors of Claims 1-4 limnimeter, which is characterized in that the scale grating and
Zero point window is respectively formed in indication grating；There is the tune for entering the water reaction time for shortening the stylus in the control mainboard
Frequency and locking phase loop member.
8. such as the limnimeter of the described in any item high precision monitors of Claims 1-4, which is characterized in that the control mainboard packet
Touching water trigger is included, the touching water trigger is electrically connected with the stylus and control mainboard respectively.
9. such as the limnimeter of the described in any item high precision monitors of Claims 1-4, which is characterized in that the upper end of the vertical bar
Equipped with for limiting upper limit switch of the reading head towards moving limit position, the lower end of the vertical bar is equipped with for limiting
The digital lower position switch for reading moving limit position upside down, the upper limit switch and digital lower position switch
It is electrically connected in the control mainboard.
10. such as the limnimeter of the described in any item high precision monitors of Claims 1-4, which is characterized in that the guide rail passes through institute
Movable block is stated, and the limnimeter of the high precision monitor includes for the guide frame to the movement for being oriented to the movable block；
The guide frame includes guide pad and the guide rod that is arranged on the pedestal, and the guide rod is arranged vertically, and institute
It states and is equipped with guide groove in guide rod, the guide groove is disposed to extend along the length direction of the guide rod；The side of the movable block
Side protrudes outwardly, forms the guide pad, and the guide pad is movably placed in the guide groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308757.1A CN109459116B (en) | 2018-11-05 | 2018-11-05 | Water level meter with high-precision monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308757.1A CN109459116B (en) | 2018-11-05 | 2018-11-05 | Water level meter with high-precision monitoring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109459116A true CN109459116A (en) | 2019-03-12 |
| CN109459116B CN109459116B (en) | 2020-03-27 |
Family
ID=65609460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811308757.1A Active CN109459116B (en) | 2018-11-05 | 2018-11-05 | Water level meter with high-precision monitoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109459116B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2290841Y (en) * | 1996-01-05 | 1998-09-09 | 陈昌金 | Auto-tracking content meter for liquid storage cylinder |
| US20020005869A1 (en) * | 2000-04-18 | 2002-01-17 | Locher Philippe Georges | System for registration of a fluid level in a receptacle |
| CN102564522A (en) * | 2010-12-16 | 2012-07-11 | 上海宝钢工业检测公司 | Electrode floating type hybrid liquid indicator group with self-diagnosis function |
| CN103197695A (en) * | 2013-03-28 | 2013-07-10 | 苏州优德通力电气有限公司 | Double-floating-ball delayed level controller |
| CN105043493A (en) * | 2015-05-14 | 2015-11-11 | 珠江水利委员会珠江水利科学研究院 | High-precision water level gauge |
| CN205843768U (en) * | 2016-07-28 | 2016-12-28 | 河海大学 | A kind of device of kinetic measurement water level |
-
2018
- 2018-11-05 CN CN201811308757.1A patent/CN109459116B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2290841Y (en) * | 1996-01-05 | 1998-09-09 | 陈昌金 | Auto-tracking content meter for liquid storage cylinder |
| US20020005869A1 (en) * | 2000-04-18 | 2002-01-17 | Locher Philippe Georges | System for registration of a fluid level in a receptacle |
| CN102564522A (en) * | 2010-12-16 | 2012-07-11 | 上海宝钢工业检测公司 | Electrode floating type hybrid liquid indicator group with self-diagnosis function |
| CN103197695A (en) * | 2013-03-28 | 2013-07-10 | 苏州优德通力电气有限公司 | Double-floating-ball delayed level controller |
| CN105043493A (en) * | 2015-05-14 | 2015-11-11 | 珠江水利委员会珠江水利科学研究院 | High-precision water level gauge |
| CN205843768U (en) * | 2016-07-28 | 2016-12-28 | 河海大学 | A kind of device of kinetic measurement water level |
Non-Patent Citations (1)
| Title |
|---|
| 陈文彪等: "《珠江河口治理开发研究》", 31 March 2013, 中国水利水电出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109459116B (en) | 2020-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201653372U (en) | Petroleum pipeline length measurement device | |
| CN106679618A (en) | Remote multifunctional monitoring system for architectural structure and monitoring method | |
| CN105043493A (en) | High-precision water level gauge | |
| CN112781561A (en) | Building engineering is with straightness detection device that hangs down | |
| CN104089597B (en) | A kind of multi-point displacement measurement apparatus | |
| CN109459116A (en) | The limnimeter of high precision monitor | |
| CN202101912U (en) | Digital display resiliometer | |
| CN202928472U (en) | Calibrating device for right angle detection ruler and wedge plug ruler | |
| CN204944604U (en) | High precision limnimeter | |
| CN201413125Y (en) | Portable laser linear detector | |
| CN206113921U (en) | Long -range multi -functional monitoring system of building structure | |
| CN104132609A (en) | Electromagnetic grid ruler structure and displacement information reading method thereof | |
| CN205426026U (en) | Line chi measuring apparatu | |
| CN210803767U (en) | Array type indication grating structure | |
| CN102192702A (en) | Method for operating digital display height measurement instrument | |
| CN102374858B (en) | Underground angle measuring and calculating instrument | |
| CN210862570U (en) | Guiding rule tool for supervision based on laser technology | |
| CN201364112Y (en) | Mechanical measuring tool indicating gauge | |
| CN204924101U (en) | Three -dimensional measuring device on object surface | |
| CN204405010U (en) | A kind of novel digital optical chi | |
| CN218296934U (en) | Multifunctional measurer | |
| CN203940826U (en) | A kind of electric magnetic railings ruler structure | |
| CN203949650U (en) | A kind of multi-point displacement measurement mechanism | |
| CN201093971Y (en) | Object surface measurer | |
| CN208334403U (en) | A kind of equipment dedicated for measurement water surface flow velocity is accurately positioned |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |