CN110388886A - A kind of contactless height measuring device of high-precision - Google Patents
A kind of contactless height measuring device of high-precision Download PDFInfo
- Publication number
- CN110388886A CN110388886A CN201810339814.6A CN201810339814A CN110388886A CN 110388886 A CN110388886 A CN 110388886A CN 201810339814 A CN201810339814 A CN 201810339814A CN 110388886 A CN110388886 A CN 110388886A
- Authority
- CN
- China
- Prior art keywords
- measuring device
- differential pressure
- hose
- height measuring
- pressure transmitter
- 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
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/02—Measuring arrangements characterised by the use of fluids for measuring length, width or thickness
Abstract
The present invention provides a kind of contactless height measuring device of high-precision, including differential pressure transmitter and detection box, and differential pressure transmitter is connected to by hose with detection box lower part, detects filled with measurement liquid in box and hose, detection box is located on testing container.The differential pressure variation that liquid is measured in hose is measured by differential pressure transmitter, the height for conversing testing container is compensated using density of the temperature sensor to measurement liquid, reduces measurement error, ensure that the liquid entered in hose does not have bubble using bubble removal device simultaneously, improves the accuracy of measurement.The present invention is not only simple in structure, installs and easy to maintain, manufacturing cost and use cost is low, and measurement accuracy is high, has wide range of applications.
Description
Technical field
The invention belongs to detection technique fields, and in particular to a kind of contactless height measuring device of high-precision.
Background technique
There are many type of relative altitude detection device, mainly held at present using laser measuring device for measuring to telescopic large volume
The height of device carries out high-acruracy survey, but there are problems that the following aspects during actual measurement: first is that laser measurement
Device is more complicated in installation, and the measuring principle of laser measuring device for measuring is that transmitting laser is then anti-to fixed reflection unit
It is emitted back towards calculate the height of testee, to reach measurement accurately, then in laser beam emitting device and fixation reflex device
Between cannot have shelter, without shelter between laser beam emitting device and fixation reflex device, laser must just be sent out
Injection device and fixation reflex device are installed to outside tested device, this is undoubtedly just buried to the installation of laser measuring device for measuring and maintenance
The risk of high falling, while high haze and anomalous weather dusty causes extreme influence to the precision of the measuring device；
Second is that existing laser measuring device for measuring is to use cement flooring as fixation reflex device, since the smoothness of cement flooring is not up to
Height to technical requirements, and cement flooring also has injustice, this also has a greatly reduced quality to the accuracy of measurement, measures not brigadier couple
The safe operation of equipment constitutes a threat to；Third is that the cost of investment and maintenance cost of laser measuring device for measuring are higher.However traditional difference
Pressure measuring device needs and the media contact in tested container, not only will affect the quality of liquid stored by inside container, but also
There is the risk of leakage in weld and valve junction, especially when the medium in tested container is inflammable, explosive, poisonous harmful Jie
When matter, it will extremely dangerous.For this purpose, a kind of contactless height measuring device of high-precision is provided, it is not only easy for installation, but also survey
Accuracy of measurement is high, and use cost is low, is current those skilled in the art technical problem urgently to be resolved.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of contactless height measuring devices of high-precision, not only install
It is convenient, and measurement accuracy is high, and use cost is low.
In order to solve the above technical problems, the technical scheme adopted by the invention is that: a kind of contactless height survey of high-precision
Device, including differential pressure transmitter and detection box are measured, differential pressure transmitter is connected to by hose with detection box lower part, and box and hose are detected
Interior to be filled with measurement liquid, detection box is located on testing container.
In preferred scheme, the detection box is connected to by bubble removal device with hose.
In preferred scheme, the measurement liquid is distilled water, carbon tetrachloride or methyl-silicone oil.
It further include microcomputer controller and temperature sensor meter, temperature sensor meter is mounted on hose in preferred scheme
On, microcomputer controller is connect with differential pressure transmitter and temperature sensor meter signal respectively.
In preferred scheme, the microcomputer controller calculates the liquid height in the extraction tower: H according to the following formula
=Δ P/-h；
In above-mentioned formula: Δ P is the differential pressure that differential pressure transmitter measures, ρtFor density of the measurement liquid when temperature is t, h be to
For xylometer in the height of lowest order, g is acceleration of gravity.
In preferred scheme, the hose is equipped with maintenance valve.
It further include network communication module in preferred scheme, network communication module is electrically connected with microcomputer controller, can be with
Remote equipment communication connection.
The present invention provides a kind of contactless height measuring device of high-precision, has using the above structure below beneficial to effect
Fruit:
1) use contactless design, avoid with the media contact in testing container, eliminate the risk of dielectric leakage, safety
It is high；
2) changed by the differential pressure that differential pressure transmitter measures measurement liquid in hose, converse the height of testing container, utilize temperature
Sensor compensates the density of measurement liquid, reduces measurement error, while ensuring to enter in hose using bubble removal device
Liquid does not have bubble, improves the accuracy of measurement；
3) different temperatures is compensated using microcomputer controller automatically, adapts to the natural environment of various high and low temperatures.
4) it is not only simple in structure, is small in size, to the shape of testing container without particular/special requirement, whole device can be placed in be measured
Outside container, install and easy to maintain, and manufacturing cost and use cost is low；
5) relative altitude being especially suitable between precise measurement large size telescopic equipment.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is structural schematic diagram of the present invention in lowest order；
Fig. 2 is structural schematic diagram of the present invention in highest order；
Fig. 3 is control structure schematic diagram of the invention；
In figure: differential pressure transmitter 1 detects box 2, hose 3, testing container 4, bubble removal device 5, microcomputer controller 6, temperature biography
Sensor meter 7 overhauls valve 8, network communication module 9.
Specific embodiment
In order that those skilled in the art will better understand the technical solution of the present invention, below with reference to embodiment to this hair
Bright to be described in further detail, embodiment is merely to illustrate the present invention, is not limited to the scope of the present invention.
As in Fig. 1-3, a kind of contactless height measuring device of high-precision, including differential pressure transmitter 1 and detection box 2, it is poor
Pressure transmitter 1 is connected to by hose 3 with detection 2 lower part of box, is detected filled with measurement liquid in box 2 and hose 3, detection box 2 is located at
On testing container 4.When tested container is in lowest order, it is zero-bit pressure value that differential pressure transmitter, which measures pressure, works as tested container
When in highest order, it is full scale pressure value that differential pressure transmitter, which measures pressure, and the zero-bit and full scale of tested container height are corresponded to this.
When the real-time elevation carrection of tested container, differential pressure transmitter will measure pressure conversion and show at corresponding altitude signal, reach high
The purpose of precision, contactless security measurement.
In preferred scheme, the detection box 2 is connected to by bubble removal device 5 with hose 3, the feed liquor of bubble removal device 5
Pipe is connected to detection box 2, and the outlet tube of bubble removal device 5 is connected to hose 3, it is ensured that the drum in measurement liquid will not enter soft
In pipe 3, reduce measurement error, to improve the accuracy of measurement, exists to overcome in the conduit of Traditional differential pressure measuring device
The defect of small drum.
In preferred scheme, the measurement liquid is distilled water, carbon tetrachloride or methyl-silicone oil, and not only the density of liquid is opposite
It is larger, and property is stablized, and is influenced by temperature change low, and nonhazardous is non-corrosive.
It further include microcomputer controller 6 and temperature sensor meter 7, temperature sensor meter 7 is mounted on soft in preferred scheme
On pipe 3, microcomputer controller 6 is connect with differential pressure transmitter 1 and 7 signal of temperature sensor meter respectively, differential pressure transmitter 1 and temperature
7 signal of sensor meter will test signal respectively and be transmitted to microcomputer controller 6.Using between the temperature and density of liquid in unique
Corresponding relationship is compensated automatically by the density of microcomputer controller 6 and 7 pairs of temperature sensor measurement liquid, can not only be reduced
Measurement error improves the accuracy of measurement, so that measuring device adapts to the natural environment of various high and low temperatures, application
Range is more extensive.
In preferred scheme, the microcomputer controller 6 calculates the liquid height in the extraction tower according to the following formula:
H=Δ P/g ρt- h, in the formula: Δ P is the differential pressure that differential pressure transmitter 1 measures, ρtIt is close when temperature is t for measurement liquid
Degree, h are testing container 4 in the height of lowest order, and g is acceleration of gravity.
In preferred scheme, the hose 3 is equipped with maintenance valve 8, convenient for differential pressure transmitter 1 is overhauled or replaced.
It further include network communication module 9 in preferred scheme, network communication module 9 is electrically connected with microcomputer controller 6,
It can be communicatively coupled with remote equipment, the temperature and elevation information that can be will test are transmitted to terminal device in time, convenient for operation
Personnel remotely monitor, and especially when the breakthrough home of testing container 4, are handling at the first time convenient for operator, really
Protect the safe operation of equipment.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as limitation of the invention, this hair
Bright protection scope should be with the technical solution of claim record, technical characteristic in the technical solution recorded including claim
Equivalents are protection scope.Equivalent replacement i.e. within this range is improved, also within protection scope of the present invention.
Claims (7)
1. a kind of contactless height measuring device of high-precision, it is characterised in that: including differential pressure transmitter (1) and box (2) are detected,
Differential pressure transmitter (1) is connected to by hose (3) with detection box (2) lower part, is detected and is filled with measurement liquid in box (2) and hose (3),
Detection box (2) is located on testing container (4).
2. the contactless height measuring device of a kind of high-precision according to claim 1, it is characterized in that: the detection box
(2) it is connected to by bubble removal device (5) with hose (3).
3. the contactless height measuring device of a kind of high-precision according to claim 1, it is characterized in that: the measurement liquid is
Distilled water, carbon tetrachloride or methyl-silicone oil.
4. the contactless height measuring device of a kind of high-precision according to claim 1, it is characterized in that: further including micro computer
Controller (6) and temperature sensor meter (7), temperature sensor meter (7) are mounted on hose (3), and microcomputer controller (6) is respectively
It is connect with differential pressure transmitter (1) and temperature sensor meter (7) signal.
5. the contactless height measuring device of a kind of high-precision according to claim 4, it is characterized in that: described micro computer controlled
Device (6) processed calculates the liquid height in the extraction tower: H=Δ P/(g ρ according to the following formulat)-h；
In above-mentioned formula: Δ P is the differential pressure that differential pressure transmitter (1) measures, ρtFor density of the measurement liquid when temperature is t, h is
For testing container (4) in the height of lowest order, g is acceleration of gravity.
6. the contactless height measuring device of a kind of high-precision according to claim 1, it is characterized in that: the hose (3)
Equipped with maintenance valve (8).
7. the contactless height measuring device of a kind of high-precision according to claim 4, it is characterized in that: further including that network is logical
Believe module (9), network communication module (9) is electrically connected with microcomputer controller (6), can communicate to connect with remote equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810339814.6A CN110388886A (en) | 2018-04-16 | 2018-04-16 | A kind of contactless height measuring device of high-precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810339814.6A CN110388886A (en) | 2018-04-16 | 2018-04-16 | A kind of contactless height measuring device of high-precision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110388886A true CN110388886A (en) | 2019-10-29 |
Family
ID=68282999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810339814.6A Pending CN110388886A (en) | 2018-04-16 | 2018-04-16 | A kind of contactless height measuring device of high-precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110388886A (en) |
-
2018
- 2018-04-16 CN CN201810339814.6A patent/CN110388886A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191029 |