CN203837808U - Differential-strain-sheet-based type pole tower vibration monitoring device - Google Patents
Differential-strain-sheet-based type pole tower vibration monitoring device Download PDFInfo
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- CN203837808U CN203837808U CN201420265216.6U CN201420265216U CN203837808U CN 203837808 U CN203837808 U CN 203837808U CN 201420265216 U CN201420265216 U CN 201420265216U CN 203837808 U CN203837808 U CN 203837808U
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- foil gauge
- shaft tower
- amplification circuit
- signal amplification
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Abstract
The utility model provides a differential-strain-sheet-based type pole tower vibration monitoring device, and solves problems that existing vibration monitoring devices are poor in sensitivity, high in cost, slow in response, etc. The device comprises strain sheets which are fixed on front, rear, left and right surfaces of a pole tower. One bridge circuit is respectively formed by the front and rear strain sheets, and the left and right strain sheets, and the bridge circuits are respectively used for monitoring front and rear vibration and left and right vibration. The bridge circuits are also connected with a signal amplification circuit, an AD conversion module and a single-chip microcomputer in turn. The device is reasonable in design, simple in structure, low in cost, convenient to install and great in use effect. Left, right, front and rear vibration situations of the pole tower can be measured by the device, and response is rapid and measurement precision is high so that safe operation of a power transmission line is greatly guaranteed, and the device is suitable for wide-range installation and use and is worthy of popularization and use.
Description
Technical field
The utility model relates to shaft tower vibration detection field, specifically a kind of based on difference strain chip shaft tower vibration monitoring device.
Background technology
Economic developing rapidly proposed higher demand to electric power supply.For meeting electricity consumption, Utilities Electric Co. builds a large amount of overhead transmission lines, and large capacity and long-distance transmission line come into operation successively.Because of transmission line of electricity, to cross over region large, and the gentle await your reply of landform is assorted, and that gives transmission of electricity has reliably caused many potential risks with safety, thus the real-time monitoring of transmission line of electricity is become particularly important.High-voltage power transmission tower under field environment, is often subject to natural cause as the interference of wind, conductor galloping etc., and human factor, as the impact of disconnected wood and construction implement, thereby causes shaft tower vibration.Shaft tower vibration easily causes various accidents, when serious, even can affect the safe operation of transmission line of electricity, therefore need to monitor the Vibration Condition of shaft tower.
In prior art, mostly adopt acceleration transducer, the computing by acceleration and then learn the Vibration Condition of shaft tower, it is significantly not enough that this mode has, and is exactly that sensitivity is too poor, and expensive, is not suitable for installing and using on a large scale; Use in addition Micro-Variation Capacitance, by shaft tower, vibrate and cause what electric capacity changed to monitor, have the problem of poor sensitivity, low-response.
Summary of the invention
The purpose of this utility model is in order to solve above-mentioned problems of the prior art, and two provide a kind of based on difference strain chip shaft tower vibration monitoring device.
The utility model is achieved by the following technical solution:
Based on a difference strain chip shaft tower vibration monitoring device, comprise foil gauge, signal amplification circuit, AD modular converter, single-chip microcomputer and supply module, supply module provides power supply for signal amplification circuit, AD modular converter and single-chip microcomputer;
On the face of the front, rear, left and right of shaft tower, be respectively fixed with a foil gauge, be respectively: R1, R2, R3 and R4, the mark line direction of foil gauge (should change direction) direction is all parallel with the prolonging direction of shaft tower, foil gauge R1, R2 form one group of differential pair and for monitoring the porpoise of shaft tower, and foil gauge R3, R4 form another group differential pair and for monitoring the side-to-side vibrations of shaft tower;
Foil gauge R1, R2 and two fixed resistance R1 ', R2 ' composition the first bridge diagram (as Fig. 2), wherein, between the contact of the contact of R1, R2 and R1 ', R2 ', be the power input of the first bridge diagram and be connected with supply module, between the contact of the contact of R1, R1 ' and R2, R2 ', be the signal output part of the first bridge diagram and be connected with an input end of signal amplification circuit, the output terminal of signal amplification circuit is connected with the input end of AD modular converter, and the output terminal of AD modular converter is connected with the input end of single-chip microcomputer;
Foil gauge R3, R4 and two fixed resistance R3 ', R4 ' composition the second bridge diagram (as Fig. 3), wherein, between the contact of the contact of R3, R4 and R3 ', R4 ', be the power input of the second bridge diagram and be connected with supply module, between the contact of the contact of R3, R3 ' and R4, R4 ', be the signal output part of the second bridge diagram and be connected with an input end of signal amplification circuit, the output terminal of signal amplification circuit is connected with the input end of AD modular converter, and the output terminal of AD modular converter is connected with the input end of single-chip microcomputer.
The specific works of the utility model device is analyzed as follows:
When shaft tower vibrates, shaft tower force column can produce deformation, as analyzed the situation of shaft tower porpoise.When shaft tower is during to after vibration, the force column that foil gauge R2 is corresponding is squeezed, and foil gauge R2 shrinks, and meanwhile, the corresponding force column of foil gauge R1 on opposite is stretched, and foil gauge R1 extends, and is converted to the variation of the resistance of foil gauge R1 resistance and foil gauge R2.Because the deformation occurring during shaft tower vibration is less, therefore, by foil gauge R1 and foil gauge R1 access bridge diagram, can draw differential output voltage, and then the differential output voltage U0 after can being amplified by signal amplification circuit.The continuous vibration of shaft tower, makes the polarity of differential output voltage U0 in continuous change, can gather the vibration frequency that computing obtains shaft tower by AD modular converter, finally passes to single-chip microcomputer.The analysis of shaft tower side-to-side vibrations is also the same.
The utility model device is reasonable in design, simple in structure, with low cost, easy for installation, result of use is good, this device can be measured the Vibration Condition of shaft tower left and right, front and back, and response is fast, measuring accuracy is higher, well guaranteed the safe operation of transmission line of electricity, be applicable to installing and using on a large scale, be worth of widely use.
Accompanying drawing explanation
Fig. 1 is foil gauge scheme of installation in the utility model device.
Fig. 2 is the first bridge diagram figure in the utility model device.
Fig. 3 is the second bridge diagram figure in the utility model device.
Fig. 4 is each module connection diagram of the utility model device.
In figure: 1-shaft tower.
Embodiment
Below in conjunction with accompanying drawing, the utility model will be further described:
As shown in Figures 1 to 4, a kind ofly based on difference strain chip shaft tower vibration monitoring device, comprise foil gauge, signal amplification circuit, AD modular converter, single-chip microcomputer and supply module, supply module provides power supply for signal amplification circuit, AD modular converter and single-chip microcomputer;
The xsect of shaft tower 1 is square, on the face of the front, rear, left and right of shaft tower 1, be respectively fixed with a foil gauge, be respectively: R1, R2, R3 and R4, concrete fixedly time, foil gauge R1, R2 are fixed on the position of being fixed on close rear incline on the face of left and right on front-back near position, foil gauge R3, the R4 of left side rib, foil gauge R1, R2 are for monitoring the porpoise of shaft tower 1, and foil gauge R3, R4 are for monitoring the side-to-side vibrations of shaft tower 1;
Foil gauge R1, R2 and two fixed resistance R1 ', R2 ' composition the first bridge diagram, wherein, between the contact of the contact of R1, R2 and R1 ', R2 ', be the power input of the first bridge diagram and be connected with supply module, between the contact of the contact of R1, R1 ' and R2, R2 ', be the signal output part of the first bridge diagram and be connected with an input end of signal amplification circuit, the output terminal of signal amplification circuit is connected with the input end of AD modular converter, and the output terminal of AD modular converter is connected with the input end of single-chip microcomputer;
Foil gauge R3, R4 and two fixed resistance R3 ', R4 ' composition the second bridge diagram, wherein, between the contact of the contact of R3, R4 and R3 ', R4 ', be the power input of the second bridge diagram and be connected with supply module, between the contact of the contact of R3, R3 ' and R4, R4 ', be the signal output part of the second bridge diagram and be connected with an input end of signal amplification circuit, the output terminal of signal amplification circuit is connected with the input end of AD modular converter, and the output terminal of AD modular converter is connected with the input end of single-chip microcomputer.
Claims (1)
1. based on a difference strain chip shaft tower vibration monitoring device, it is characterized in that: comprise foil gauge, signal amplification circuit, AD modular converter, single-chip microcomputer and supply module, supply module provides power supply for signal amplification circuit, AD modular converter and single-chip microcomputer;
On the front, rear, left and right face of shaft tower (1), be respectively fixed with a foil gauge, be respectively: R1, R2, R3 and R4, foil gauge R1, R2 are used for monitoring the porpoise of shaft tower (1), and foil gauge R3, R4 are used for monitoring the side-to-side vibrations of shaft tower (1);
Foil gauge R1, R2 and two fixed resistance R1 ', R2 ' composition the first bridge diagram, wherein, between the contact of the contact of R1, R2 and R1 ', R2 ', be the power input of the first bridge diagram and be connected with supply module, between the contact of the contact of R1, R1 ' and R2, R2 ', be the signal output part of the first bridge diagram and be connected with an input end of signal amplification circuit, the output terminal of signal amplification circuit is connected with the input end of AD modular converter, and the output terminal of AD modular converter is connected with the input end of single-chip microcomputer;
Foil gauge R3, R4 and two fixed resistance R3 ', R4 ' composition the second bridge diagram, wherein, between the contact of the contact of R3, R4 and R3 ', R4 ', be the power input of the second bridge diagram and be connected with supply module, between the contact of the contact of R3, R3 ' and R4, R4 ', be the signal output part of the second bridge diagram and be connected with an input end of signal amplification circuit, the output terminal of signal amplification circuit is connected with the input end of AD modular converter, and the output terminal of AD modular converter is connected with the input end of single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420265216.6U CN203837808U (en) | 2014-05-23 | 2014-05-23 | Differential-strain-sheet-based type pole tower vibration monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420265216.6U CN203837808U (en) | 2014-05-23 | 2014-05-23 | Differential-strain-sheet-based type pole tower vibration monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203837808U true CN203837808U (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420265216.6U Expired - Fee Related CN203837808U (en) | 2014-05-23 | 2014-05-23 | Differential-strain-sheet-based type pole tower vibration monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203837808U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101800A (en) * | 2017-04-06 | 2017-08-29 | 广东电网有限责任公司东莞供电局 | Wind power measuring equipment and method for power transmission iron tower model |
| CN108059089A (en) * | 2017-12-14 | 2018-05-22 | 曾正扬 | A kind of tower crane inclination measuring device |
-
2014
- 2014-05-23 CN CN201420265216.6U patent/CN203837808U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101800A (en) * | 2017-04-06 | 2017-08-29 | 广东电网有限责任公司东莞供电局 | Wind power measuring equipment and method for power transmission iron tower model |
| CN108059089A (en) * | 2017-12-14 | 2018-05-22 | 曾正扬 | A kind of tower crane inclination measuring device |
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Legal Events
| 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: 20140917 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |