CN202692933U - Medium depth monitoring device and vertical displacement measuring device - Google Patents
Medium depth monitoring device and vertical displacement measuring device Download PDFInfo
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- CN202692933U CN202692933U CN 201220361632 CN201220361632U CN202692933U CN 202692933 U CN202692933 U CN 202692933U CN 201220361632 CN201220361632 CN 201220361632 CN 201220361632 U CN201220361632 U CN 201220361632U CN 202692933 U CN202692933 U CN 202692933U
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Abstract
The utility model relates to a medium depth monitoring device and a vertical displacement measuring device. The medium depth monitoring device takes parallel line electrodes as a measurement sensor and a compensation sensor which are respectively connected with a resistor R1 and a resistor R2 to form a Wheatstone bridge; because an AC power supply supplies bridge voltage, output signals are respectively rectified and filtered by a precise rectifying circuit and are then connected to a differential amplifier to carry out subtraction amplification and are measured and display by a sampling and displaying circuit, and the medium depth monitoring device can be used for carrying out more precise monitoring on change of the thickness of another medium underwater and can be used for monitoring the scouring depth of a foundation. According to the vertical displacement measuring device, the two sensor are respectively and fixedly arranged in a vertical insulated pipeline, and the insulated pipelines are communicated by a communicating pipe, filled liquid is a medium, and then the two insulated pipelines are fixed on a tested member; and the vertical displacement measuring device can be used for precisely monitoring the vertical displacement of a large-scale structure on the ground without the need of a bracket and can achieve the resolution rate of 0.001mm.
Description
Technical field
The utility model relates to the technology of engineering electronic measurement and control, particularly a kind of media depth monitoring device and vertical displacement measuring device.
Background technology
Method and apparatus that be used for to measure object thickness (degree of depth) and displacement is a lot, but specialized equipment often, and measuring accuracy is not high.
Summary of the invention
The purpose of this utility model is that design a kind ofly can not needing than precision monitor, on the ground carry out support can carry out to the vertical displacement of large scale structure common apparatus and the device of precision monitor to the variation of another kind of dielectric thickness under water, detects the needs of test to adapt to civil engineering work.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of media depth monitoring device, it is characterized in that: with the survey sensor of a parallel lines electrode as media depth, be installed in fully in the measured medium as compensation sensor with another parallel lines electrode, survey sensor and compensation sensor be contact resistance R1 and resistance R 2 formation resistance bridges respectively, adopting AC power to supply with bridge presses, two output signals of described resistance bridge are respectively by a precise rectification circuit rectification and filtering, two described precise rectification circuits are connected to simultaneously differential amplifier and carry out the subtraction amplification, the output of described differential amplifier is measured by the sampling display circuit and is shown that power circuit is described AC power, precise rectification circuit, differential amplifier and sampling display circuit provide power supply.
Wherein, described parallel lines electrode is comprised of the first wire, the second wire, upper insulation locating piece, lower insulation locating piece and stube cable, the first parallel and isometric wire and the lower end fixing seal of the second wire in described lower insulation locating piece, the upper end be connected with the heart yearn of described stube cable and fixing seal in described insulation locating piece.
Wherein, described the first wire and the second wire are the metal wire rods of STAINLESS STEEL WIRE, graphite wire rod or surface gold-plating.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of vertical displacement measuring device, it is characterized in that: have above-mentioned media depth monitoring device, described survey sensor and described compensation sensor are fixedly mounted on respectively in the vertical isolated pipe that arranges, be connected with communicating pipe between the described isolated pipe, filling liquid is medium, described compensation sensor is submerged in the liquid medium fully, described survey sensor is all parallel with the axis of place isolated pipe with the second wire with the first wire of described compensation sensor, and two described isolated pipes are fixed on the tested member.
Wherein, two described isolated pipes are also by consisting of the isolated pipe of an one, be separated into two chambers that the bottom is communicated with the vertical partition wall that arranges in the isolated pipe of described one, be fixed with described survey sensor in one of them chamber, be fixed with described compensation sensor in another chamber, described survey sensor is connected with the stube cable of compensation sensor with same four-core shielding.
Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be:
Adopt the parallel lines electrode as dielectric resistance or resistivity sensor, has the advantage that the sensor production standard is reliable, measuring repeatability is good, variation by resistance bridge energy auto-compensation medium, the impact of medium and wire difference variation, adopt AC power can effectively eliminate the polarization of electrode phenomenon for bridge, at the differential amplifier front end signal is carried out rectification and filtering, not only can eliminate the high frequency interference noise, can also make signal have the directivity of tool vertical displacement.
A kind of single electrode group sensor that the utility model provides, that the parallel lines electrode is fixedly mounted in the isolated pipe, make the environment of measured medium consistent, be not subjected to the impact of external electric field, filling liquid is medium with being communicated with communicating pipe also, can be used for measuring the variation of member vertical displacement, such as deflection of bridge span and pile foundation vertical displacement etc., resolution can reach 0.001mm; For the measurement of large scale structure displacement, adopt the self-compensating compound sensor of bipolar electrode group, can carry out temperature compensation to each measuring point self, thereby eliminate the complicated impact of change of temperature field of large scale structure.The wire of parallel lines electrode adopt stainless steel, graphite or surface gold-plating etc. wire rod, have and conduct electricity very well, not corrosion, be difficult for the advantage of polarization.
Description of drawings
Fig. 1 is a kind of circuit theory and system's connection diagram of media depth monitoring device;
Fig. 2 is a kind of structural representation of parallel lines electrode sensor;
Fig. 3 is a kind of structure of single electrode group sensor and adopts the communicating pipe connection diagram;
Fig. 4 is the structural representation of the self-compensating compound sensor of a kind of bipolar electrode group.
Description of reference numerals: 1 ~ parallel lines electrode, 1-1 ~ the first wire, 1-2 ~ the second wire, the upper insulation of 1-3 locating piece, 1-4 ~ lower insulation locating piece, 1-5 ~ stube cable, the stube cable of 1-51 ~ four-core shielding, 2 ~ survey sensor, 3 ~ compensation sensor, 4 ~ AC power, 5 ~ precise rectification circuit, 6 ~ differential amplifier, 7 ~ sampling display circuit, 8 ~ power circuit, 9 ~ isolated pipe, the isolated pipe of 91 ~ one, 92 ~ partition wall, 10 ~ communicating pipe, 11 ~ liquid.
Embodiment
A kind of media depth monitoring device.
As shown in Figure 1, with the survey sensor 2 of a parallel lines electrode 1 as media depth, be installed in fully in the measured medium as compensation sensor 3 with another parallel lines electrode 1, described survey sensor 2 and compensation sensor 3 be contact resistance R1 and resistance R 2 formation resistance bridges respectively, described resistance bridge adopts AC power 4 to supply with bridge and presses, two output signals of described resistance bridge are respectively by precise rectification circuit 5 rectifications and filtering, two described precise rectification circuits 5 are connected to simultaneously differential amplifier 6 and carry out the subtraction amplification, the output of described differential amplifier 6 is measured by sampling display circuit 7 and is shown that power circuit 8 is described AC power 4, precise rectification circuit 5, differential amplifier 6 and sampling display circuit 7 provide power supply.
As shown in Figure 2, described parallel lines electrode 1 is comprised of the first wire 1-1, the second wire 1-2, upper insulation locating piece 1-3, lower insulation locating piece 1-4 and stube cable 1-5, the first parallel and isometric wire 1-1 and the lower end fixing seal of the second wire 1-2 in described lower insulation locating piece 1-4, the upper end be connected with the heart yearn of described stube cable 1-5 and fixing seal in described insulation locating piece 1-4.Wherein, the first wire 1-1 of parallel lines electrode 1 and the second wire 1-2 adopt that the wire rod etc. of stainless steel, graphite or surface gold-plating conducts electricity very well, not corrosion, the material that is difficult for polarization make.
In above-described embodiment, described the first wire 1-1 and the second wire 1-2 all adopt 306 stainless steels of diameter 2mm to make, and then seal with the upper insulation locating piece 1-3 of epoxide resin material and lower insulation locating piece 1-4 to turn fixing; The rectangle AC power 4 of (dutycycle is 50%) is the electric bridge voltage supply about employing ± 5V frequency 1kHz, adopt the TL084 operational amplifier to consist of precise rectification circuit 5, detection signal carried out delivering to after full-wave rectification and the filtering adopt the INA111 instrument amplifier to carry out subtraction to amplify, select suitable sensitivity by regulating enlargement factor, adopts four half voltage tables to measure as the display circuit 7 of sampling and show.
The utility model adopts parallel lines electrode 1 as dielectric resistance or resistivity sensor, has the advantage that the sensor production standard is reliable, measuring repeatability is good, variation by resistance bridge energy auto-compensation medium, the impact of medium and wire difference variation, adopt AC power 4 can effectively eliminate the polarization of electrode phenomenon for bridge, at differential amplifier 6 front ends signal is carried out rectification and filtering, not only can eliminate the high frequency interference noise, can also make signal have the directivity of vertical displacement.
Adopt the media depth monitoring device to carry out the monitoring of the foundation scouring degree of depth.
As shown in Figure 1, survey sensor 2 is vertically mounted on face place, riverbed, parallel wire partly inserts in the soil layer (sand), part is exposed in the river, because river is flow state, water quality and water temperature change greatly, and therefore the parallel wire with compensation sensor 3 all is exposed in the river, water quality and water temperature variation are carried out auto-compensation, and described survey sensor 2 and compensation sensor 3 adopt same specification, approaching, the consistent stube cable 1-5 of installation environment of length simultaneously.
All the other are with embodiment 1.
Adopting the media depth monitoring device to carry out the structure vertical displacement measures.
As shown in Figure 3, a kind of single electrode group sensor that adopts, that the survey sensor 2 that parallel lines electrode 1 is made is fixedly mounted on respectively in the vertical isolated pipe 9 that arranges with compensation sensor 3, be connected with communicating pipe 10 between the described isolated pipe 9, the first wire 1-1 of described parallel lines electrode 1 is all parallel with the axis of its place isolated pipe 9 with the second wire 1-2.During detection, two isolated pipes 9 are fixed on the tested member, are communicated with communicating pipe 10 between two isolated pipes 9, filling liquid is medium, and described compensation sensor 3 can be submerged in the liquid medium fully in measuring process.When the vertical displacement of tested member changed, the respective change that the degree of depth of survey sensor 2 in liquid occurs can be monitored the variation of tested member vertical displacement.
All the other are with embodiment 2.
Embodiment 4
Adopting the media depth monitoring device to carry out the large scale structure vertical displacement measures.
As shown in Figure 4, the change of temperature field of considering large scale structure is complicated, so adopt the self-compensating compound sensor of bipolar electrode group, each measuring point self is carried out auto-compensation, the self-compensating compound sensor of described bipolar electrode group adopts lucite pipe and by consisting of, adopts the stube cable of four-core shielding to connect.Specifically, compare with embodiment 3, difference is: with two described isolated pipes 9 and by consisting of the isolated pipe 91 of an one, the vertical partition wall 92 that arranges of the isolated pipe 91 interior usefulness of described one is separated into two chambers that the bottom is communicated with, be fixed with described survey sensor 2 in one of them chamber, be fixed with described compensation sensor 3 in another chamber, in the isolated pipe 91 of described one, be injected with liquid medium, described compensation sensor 3 is immersed in the liquid medium equally, and described survey sensor 2 is connected with the stube cable 1-51 of compensation sensor 3 with same four-core shielding.
More than explanation is just illustrative for the utility model; and nonrestrictive, those of ordinary skills understand, in the situation that does not break away from the spirit and scope that claim limits; can make many modifications, variation or equivalence, but all will fall within the protection domain of the present utility model.
Claims (5)
1. media depth monitoring device, it is characterized in that: with the survey sensor (2) of a parallel lines electrode (1) as media depth, be installed in fully in the measured medium as compensation sensor (3) with another parallel lines electrode (1), survey sensor (2) and compensation sensor (3) be contact resistance R1 and resistance R 2 formation resistance bridges respectively, adopting AC power (4) to supply with bridge presses, two output signals of described resistance bridge are respectively by precise rectification circuit (a 5) rectification and filtering, two described precise rectification circuits (5) are connected to simultaneously differential amplifier (6) and carry out the subtraction amplification, the output of described differential amplifier (6) is measured by sampling display circuit (7) and is shown that power circuit (8) is described AC power (4), precise rectification circuit (5), differential amplifier (6) and sampling display circuit (7) provide power supply.
2. media depth monitoring device as claimed in claim 1, it is characterized in that: described parallel lines electrode (1) is comprised of the first wire (1-1), the second wire (1-2), upper insulation locating piece (1-3), lower insulation locating piece (1-4) and stube cable (1-5), parallel and isometric the first wire (1-1) and the lower end fixing seal of the second wire (1-2) in described lower insulation locating piece (1-4), the upper end be connected with the heart yearn of described stube cable (1-5) and fixing seal in the described locating piece that insulate (1-4).
3. media depth monitoring device as claimed in claim 2, it is characterized in that: described the first wire (1-1) and the second wire (1-2) are the metal wire rods of STAINLESS STEEL WIRE, graphite wire rod or surface gold-plating.
4. vertical displacement measuring device, it is characterized in that: have such as claim 1,2 or 3 described media depth monitoring devices, described survey sensor (2) is fixedly mounted on respectively in the vertical isolated pipe (9) that arranges with described compensation sensor (3), be connected with communicating pipe (10) between the described isolated pipe (9), filling liquid is medium, described compensation sensor (3) is submerged in the liquid medium fully, described survey sensor (2) is all parallel with the axis of place isolated pipe (9) with the second wire (1-2) with first wire (1-1) of described compensation sensor (3), and two described isolated pipes (9) are fixed on the tested member.
5. vertical displacement measuring device as claimed in claim 4, it is characterized in that: two described isolated pipes (9) are also by consisting of the isolated pipe (91) of an one, be separated into two chambers that the bottom is communicated with the vertical partition wall (92) that arranges in the isolated pipe of described one (91), be fixed with described survey sensor (2) in one of them chamber, be fixed with described compensation sensor (3) in another chamber, described survey sensor (2) is connected with the stube cable (1-51) of compensation sensor (3) with same four-core shielding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361632 CN202692933U (en) | 2012-07-24 | 2012-07-24 | Medium depth monitoring device and vertical displacement measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361632 CN202692933U (en) | 2012-07-24 | 2012-07-24 | Medium depth monitoring device and vertical displacement measuring device |
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| Publication Number | Publication Date |
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| CN202692933U true CN202692933U (en) | 2013-01-23 |
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| CN 201220361632 Expired - Fee Related CN202692933U (en) | 2012-07-24 | 2012-07-24 | Medium depth monitoring device and vertical displacement measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157554A (en) * | 2015-10-23 | 2015-12-16 | 清华大学 | Device and method for measuring thickness of scale on metal surface |
| CN110823194A (en) * | 2019-11-18 | 2020-02-21 | 中国农业大学 | Method and device for measuring water depth of slope surface flow |
-
2012
- 2012-07-24 CN CN 201220361632 patent/CN202692933U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157554A (en) * | 2015-10-23 | 2015-12-16 | 清华大学 | Device and method for measuring thickness of scale on metal surface |
| CN105157554B (en) * | 2015-10-23 | 2017-12-15 | 清华大学 | A kind of device and method for measuring metal surface scale forming |
| CN110823194A (en) * | 2019-11-18 | 2020-02-21 | 中国农业大学 | Method and device for measuring water depth of slope surface flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hangzhou Gong Ke road and bridge Technology Co., Ltd. Assignor: Research Institute of Highway Ministry of Transport Contract record no.: 2013330000190 Denomination of utility model: Medium depth monitoring device and vertical displacement measuring device Granted publication date: 20130123 License type: Exclusive License Record date: 20130614 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20200724 |