CN203432561U - Vertical deformation monitor based on ultrasonic liquid level measuring method - Google Patents
Vertical deformation monitor based on ultrasonic liquid level measuring method Download PDFInfo
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- CN203432561U CN203432561U CN201320541840.XU CN201320541840U CN203432561U CN 203432561 U CN203432561 U CN 203432561U CN 201320541840 U CN201320541840 U CN 201320541840U CN 203432561 U CN203432561 U CN 203432561U
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- 239000007788 liquid Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title description 3
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 238000012806 monitoring device Methods 0.000 claims abstract description 16
- 239000000523 sample Substances 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 10
- 238000012937 correction Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000000691 measurement method Methods 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 210000001124 body fluid Anatomy 0.000 description 2
- 239000010839 body fluid Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 1
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Abstract
本实用新型提供了一种基于超声波液位测量方法的垂直变形监测仪，包括至少一个超声垂直变形监测装置和标定装置，所述标定装置设置于标定墩上，所述超声垂直变形监测装置设置于仪器主墩测点上，所述垂直变形监测装置和所述标定装置通过管道连通；所述超声垂直变形监测装置包括自下而上设置的底座、储液罐、盖板和罩子，所述罩子内设有信号处理器，所述底座构成储液罐的底部，并设有超声波传感器；所述标定装置包括自下而上设置的标定器底座、螺旋机构、标定器度盘和罐体。本实用新型结构简单、工作可靠，解决了以往传感器活动部件被卡阻，导致仪器失效或测量不准确的问题。
The utility model provides a vertical deformation monitor based on an ultrasonic liquid level measurement method, comprising at least one ultrasonic vertical deformation monitoring device and a calibration device, the calibration device is arranged on a calibration pier, and the ultrasonic vertical deformation monitoring device is arranged on On the measuring point of the main pier of the instrument, the vertical deformation monitoring device and the calibration device are connected through pipelines; the ultrasonic vertical deformation monitoring device includes a base, a liquid storage tank, a cover plate and a cover arranged from bottom to top, and the cover There is a signal processor inside, the base constitutes the bottom of the liquid storage tank, and is equipped with an ultrasonic sensor; the calibration device includes a base of the calibration device, a screw mechanism, a calibration device dial and a tank body arranged from bottom to top. The utility model has the advantages of simple structure and reliable operation, and solves the problem that the moving parts of the sensor are blocked in the past, resulting in failure of the instrument or inaccurate measurement.
Description
Technical field
The utility model belongs to project security monitoring field, is specifically related to a kind of instrument that carries out precision measurement for the relative vertical deformation of the different parts such as dam, sluice, underground chamber, factory building, tunnel, subway, bridge, nuclear power station, skyscraper, block.
Background technology
For guaranteeing the engineering safety operations such as dam, sluice, underground chamber, factory building, tunnel, subway, bridge, nuclear power station, skyscraper, must its vertical deformation be monitored, to assess and to grasp its safety case.
Carry out vertical deformation monitoring and the analysis and research of above engineering, to guaranteeing the serviceable life of engineering construction quality and safe operation, prolongation engineering, the effect of checking engineering design and construction is significant.The deformation monitoring of engineering comprises horizontal shift and perpendicular displacement Contents for Monitoring, and wherein, perpendicular displacement is uneven settlement particularly, very big to the harmfulness of engineering, causes heavy losses usually to people's life and property.
At present, vertical deformation monitor has for measuring the sensor of liquid level both at home and abroad: potentiometer, inductor, capacitor, differential transformer and float etc.Due to the instrument of these patterns, all to have a set of connecting rod and guide piece to be connected with sensor supporting, and instrument is after operation a period of time, can make sensor activity parts by jam because of reasons such as the volatilization of liquid or vibrations, causes instrument lost efficacy or measured inaccurate.
Utility model content
The purpose of this utility model is the technical matters that will solve for above, and a kind of vertical deformation detector is provided, and it is based on Ultrasonic Liquid Level Measurement, the relative vertical deformation between can Measurement accuracy heavy construction structure.
In order to realize above technical purpose, technical scheme provided by the invention is as follows:
A kind of vertical deformation monitor based on Ultrasonic Liquid Level Measurement, comprise at least one ultrasonic vertical deformation monitoring device and caliberating device, described caliberating device is arranged to be demarcated on pier, described ultrasonic vertical deformation monitoring device is arranged on the main pier measuring point of instrument, and described vertical deformation monitoring device and described caliberating device pass through pipeline communication; It is characterized in that: described ultrasonic vertical deformation monitoring device comprises base, fluid reservoir, cover plate and the cover arranging from bottom to top, in described cover, is provided with signal processor, described base forms the bottom of fluid reservoir, and is provided with ultrasonic sensor; Described caliberating device comprises calibration device base, screw mechanism, calibration device scale and the tank body arranging from bottom to top.
According to vertical deformation monitor of the present utility model, described signal processor comprises single-chip microcomputer and signal processing chip.
According to vertical deformation monitor of the present utility model, described ultrasonic sensor comprises ultrasonic transmitter and ultrasonic receiver.
According to vertical deformation monitor of the present utility model, described ultrasonic transmitter is single probe, two probe or angle probe.
According to vertical deformation monitor of the present utility model, described ultrasonic receiver is single probe, two probe or angle probe.
According to vertical deformation monitor of the present utility model, described ultrasonic sensor is at least two.
According to vertical deformation monitor of the present utility model, also comprise correcting circuit.
According to vertical deformation monitor of the present utility model, described correcting circuit is Acoustic correction synchronizing circuit.
According to vertical deformation monitor of the present utility model, described Acoustic correction synchronizing circuit comprises synchronous generator, radiating circuit, reception amplifying circuit, detecting circuit, control circuit, sample/hold circuit, gain-programmed amplifier and the microprocessor being electrically connected to successively, described gain-programmed amplifier is electrically connected to reception amplifying circuit, described gain-programmed amplifier, through described microprocessor, is electrically connected to control circuit.
Compared with prior art, vertical deformation monitor of the present utility model is based on Ultrasonic Liquid Level Measurement, the relative altitude that can effectively measure between a plurality of basic points separated by a distance changes, can be applicable to the relative vertical deformation monitoring between heavy construction structure, the utility model is simple in structure, reliable operation, having solved sensor activity parts in the past, by jam, causes instrument to lose efficacy or measures inaccurate problem.
Accompanying drawing explanation
Fig. 1 is the structure diagram of the vertical deformation monitor based on Ultrasonic Liquid Level Measurement of the present utility model.
Fig. 2 is the system principle structured flowchart of the vertical deformation monitor based on Ultrasonic Liquid Level Measurement of the present utility model.
Fig. 3 is supersonic liquid level range measurement principle figure.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present utility model is described in further detail.
Vertical deformation monitor based on Ultrasonic Liquid Level Measurement of the present utility model is comprised of several ultrasonic sensors and fluid reservoir, between fluid reservoir, by communicating pipe, is communicated with.
Reference pot is placed in a stable horizontal basic point, and other fluid reservoirs are placed in the roughly the same diverse location of absolute altitude, when other fluid reservoirs are during with respect to reference pot generation lifting, will cause rising or the decline of this tank level.By measuring the variation of liquid level, understand the lifting distortion of measured point relative level basic point.
As shown in Figure 1, vertical deformation monitor of the present utility model changes for the relative altitude of measuring between a plurality of basic points separated by a distance, it comprises at least one ultrasonic vertical deformation monitoring device 10 and caliberating device 20, and described vertical deformation monitoring device 10 and described caliberating device 20 are communicated with by pipeline 30.Wherein, described ultrasonic vertical deformation monitoring device 10 comprises base 11, fluid reservoir 12, cover plate 13 and the cover 14 arranging from bottom to top, in described cover 14, be provided with signal processor 15, described base 11 forms the bottom of fluid reservoir 12, and is provided with ultrasonic sensor 16.Described caliberating device 20 comprises calibration device base 21, screw mechanism 22, calibration device scale 23 and the tank body 24 arranging from bottom to top.Described caliberating device 20 is arranged to be demarcated on pier 2, and described ultrasonic vertical deformation monitoring device 10 is arranged on the main pier measuring point 1 of instrument.Other electronic devices and components in the utility model vertical deformation monitor (as power supply etc.) omit not shown, but belong to the technology general knowledge of this area, and those skilled in the art can determine.
Preferably, described signal processor 15 comprises single-chip microcomputer and signal processing chip.
Preferably, described ultrasonic sensor 16 comprises ultrasonic transmitter and ultrasonic receiver.Wherein, described ultrasonic transmitter and described ultrasonic receiver can be single probe, two probe or angle probe.
The number of sonac 16 can be determined according to practical situations, and is preferably at least two, more preferably two to four.
As shown in Figure 2, its course of work is the structure of measurement system: sample/hold circuit is to ultrasonic echo value A
ncatch, to the signal capturing, peak value detection comparator is by it and calibration value A
n0compare, if A
n<A
n0, programmable amplifier tunes up gain automatically, makes A
n=A
n0; If A
n>A
n, programmable amplifier is turned gain automatically down, makes A
n=A
n0.By programmable amplifier, automatically regulate like this enlargement factor of amplifying circuit, to adapt to the variation of medium, cause A
nvariation, make all the time A
n=A
n0, by read gain number (be actually encoded radio because each coding corresponding corresponding gain number), and learn probe and liquid level distance number.
Fig. 3 is supersonic liquid level range measurement principle figure.Ultrasonic measuring liquid level is to utilize hyperacoustic echo reflection principle, the degree of depth of the liquid in measurement amount alms bowl body (being for example anticorrosion water liquid), and the time that the measurement ultrasonic pulse of take is propagated in liquid is basis.Its principle of work, probe (ultrasonic sensor 16) is launched ultrasonic pulse and in liquid 19, is transmitted to liquid level 18 exactly, after liquid level reflection, the ultrasonic pulse signal being reflected is received by probe again, measure the time that ultrasonic pulse experiences from being emitted to reception, and according to the velocity of sound in liquid, can be in the hope of popping one's head in to the distance of liquid level by calculating just, thus can determine the degree of depth of alms bowl body fluid body.
If be t from transmitting ultrasonic pulse signal to receiving the time that ultrasonic pulse signal that water-reflected returns experiences, the velocity of propagation of ultrasound wave in liquid is c, pops one's head in to the vertical range h of liquid level and can obtain by following formula:
The variation of the degree of depth of alms bowl body fluid body shows as the variation of h, as long as know the velocity of sound c in liquid, h just can determine by accurately measuring time t so.
Yet the velocity of propagation of ultrasound wave in water is different with the difference of the conditions such as temperature, pressure; In addition, strictly get on very well, the change of ultrasonic frequency, the velocity of sound also can change.Therefore, when reality measures, can not simply the velocity of sound be regarded as to constant, and should carry out velocity of sound correction, otherwise, the precision measuring just cannot be guaranteed.
Affect a lot of because have of ultrasonic velocity.For water, atmospheric pressure of the every variation of pressure, only causes the sonic velocity change of ten thousand/left and right; And 1 ℃ of the every variation of temperature causes the sonic velocity change of per mille left and right, and in common environment, the variation of temperature is often large than the variation of pressure, so temperature plays a leading role on the impact of the velocity of sound.The velocity of sound of liquid and the function of temperature t of ignoring static pressure impact are parabolic relation:
c
L=1557-0.0245(74-t)
2 (2)
In formula: c
l---the velocity of sound (m/s);
T---temperature (℃).
Correction to the velocity of sound has several different methods, and design compensation circuit in circuit for example utilizes compensate contrary with velocity of sound temperature characterisitic of characteristic of sensitive element.This bearing calibration need to be measured the sensor of temperature, makes instrument complicated; In addition, the characteristic of temperature-sensing element (device) is also difficult to can compensate the sonic velocity change being caused by temperature variation completely.
The utility model preferably adopts acoustic criteria to proofread and correct the impact of Tc on the velocity of sound.This method not only can the impact of Tc on the velocity of sound, and the impact of factor on the velocity of sound such as calibration pressure, liquid qualitative change simultaneously.The utility model adopts Acoustic correction synchronizing circuit, comprise the synchronous generator, radiating circuit, reception amplifying circuit, detecting circuit, control circuit, sample/hold circuit, gain-programmed amplifier and the microprocessor that are electrically connected to successively, described gain-programmed amplifier is electrically connected to reception amplifying circuit, described gain-programmed amplifier, through described microprocessor, is electrically connected to control circuit.As shown in Figure 2, the function of synchronizing circuit is to produce a series of square-wave pulse signals to its principle, in order to stable time relationship---synchronized relation of output signal and the maintenance of this signal of controlling other circuit.The function of radiating circuit is very large (for example hundreds of volt) the very narrow spike pulse of generation amplitude, to trigger ultrasonic probe, makes its generation have the ultrasonic vibration ripple of certain power.The function that receives amplifying circuit is that the reflection wave signal of aligning tool and the water surface (millivolt level) is amplified to 10 volts, in order to Drive and Control Circuit.
Claims (9)
1. the vertical deformation monitor based on Ultrasonic Liquid Level Measurement, comprise at least one ultrasonic vertical deformation monitoring device and caliberating device, described caliberating device is arranged to be demarcated on pier, described ultrasonic vertical deformation monitoring device is arranged on the main pier measuring point of instrument, and described vertical deformation monitoring device and described caliberating device pass through pipeline communication; It is characterized in that: described ultrasonic vertical deformation monitoring device comprises base, fluid reservoir, cover plate and the cover arranging from bottom to top, in described cover, is provided with signal processor, described base forms the bottom of fluid reservoir, and is provided with ultrasonic sensor; Described caliberating device comprises calibration device base, screw mechanism, calibration device scale and the tank body arranging from bottom to top.
2. vertical deformation monitor according to claim 1, is characterized in that: described signal processor comprises single-chip microcomputer and signal processing chip.
3. vertical deformation monitor according to claim 1, is characterized in that: described ultrasonic sensor comprises ultrasonic transmitter and ultrasonic receiver.
4. vertical deformation monitor according to claim 3, is characterized in that: described ultrasonic transmitter is single probe, two probe or angle probe.
5. vertical deformation monitor according to claim 3, is characterized in that: described ultrasonic receiver is single probe, two probe or angle probe.
6. vertical deformation monitor according to claim 1, is characterized in that: described ultrasonic sensor is at least two.
7. vertical deformation monitor according to claim 1, characterized by further comprising correcting circuit.
8. vertical deformation monitor according to claim 7, is characterized in that: described correcting circuit is Acoustic correction synchronizing circuit.
9. vertical deformation monitor according to claim 8, it is characterized in that: described Acoustic correction synchronizing circuit comprises synchronous generator, radiating circuit, reception amplifying circuit, detecting circuit, control circuit, sample/hold circuit, gain-programmed amplifier and the microprocessor being electrically connected to successively, described gain-programmed amplifier is electrically connected to reception amplifying circuit, described gain-programmed amplifier, through described microprocessor, is electrically connected to control circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320541840.XU CN203432561U (en) | 2013-09-02 | 2013-09-02 | Vertical deformation monitor based on ultrasonic liquid level measuring method |
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| CN201320541840.XU CN203432561U (en) | 2013-09-02 | 2013-09-02 | Vertical deformation monitor based on ultrasonic liquid level measuring method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938026A (en) * | 2016-06-02 | 2016-09-14 | 大连环岛仪表有限公司 | Ultrasonic calorimeter with water leakage alarm function |
| CN112362759A (en) * | 2020-11-27 | 2021-02-12 | 株洲时代电子技术有限公司 | Ultrasonic probe wheel calibration device, system and method |
| CN114509139A (en) * | 2022-02-18 | 2022-05-17 | 中国人民解放军空军勤务学院 | A detection method of liquid level switch attached to the outside of oil tank based on guided wave |
-
2013
- 2013-09-02 CN CN201320541840.XU patent/CN203432561U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938026A (en) * | 2016-06-02 | 2016-09-14 | 大连环岛仪表有限公司 | Ultrasonic calorimeter with water leakage alarm function |
| CN112362759A (en) * | 2020-11-27 | 2021-02-12 | 株洲时代电子技术有限公司 | Ultrasonic probe wheel calibration device, system and method |
| CN114509139A (en) * | 2022-02-18 | 2022-05-17 | 中国人民解放军空军勤务学院 | A detection method of liquid level switch attached to the outside of oil tank based on guided wave |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20150902 |
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| EXPY | Termination of patent right or utility model |