CN105973139A - Piezoelectric film sensor-based manhole cover deformation monitoring system - Google Patents
Piezoelectric film sensor-based manhole cover deformation monitoring system Download PDFInfo
- Publication number
- CN105973139A CN105973139A CN201610275625.8A CN201610275625A CN105973139A CN 105973139 A CN105973139 A CN 105973139A CN 201610275625 A CN201610275625 A CN 201610275625A CN 105973139 A CN105973139 A CN 105973139A
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- China
- Prior art keywords
- piezoelectric film
- film sensor
- pvdf piezoelectric
- monitoring system
- well lid
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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
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
Abstract
The present invention relates to a piezoelectric film sensor-based manhole cover deformation monitoring system. The piezoelectric film sensor-based manhole cover deformation monitoring system includes a PVDF piezoelectric film sensor, a signal processing module, an A/D converter, a single-chip microcomputer and a communication module; the PVDF piezoelectric film sensor is spirally arranged at the bottom of a manhole cover; the wire of the PVDF piezoelectric film sensor is led out and is connected with the input end of the signal processing module; the output end of the signal processing module is connected with the input end of the A/D converter; the output end of the A/D converter is connected with the input end of the single-chip microcomputer; and the output end of the single-chip microcomputer is connected with the input end of the communication module. The piezoelectric film sensor-based manhole cover deformation monitoring system of the invention has the advantages of convenient installation, flexible operation and high monitoring sensitivity, and can timely feed back the work condition of the manhole cover to a pipeline network operator and can assist in effectively protecting the travel safety of citizens.
Description
Technical field
The present invention relates to drainage pipeline networks management domain, particularly to a kind of for manhole cover damage, the monitoring system of deformation monitoring.
Background technology
Along with the quickening of urbanization process, city enlarged areas, public utility development is rapid.Pipe network shuttles back and forth Urban Underground is complicated.And owing to the pipe network in China's major part city will enter aging period, the operation health problem of Urban Underground life line is by increasingly severe；Well lid especially damaged, deformation causes threat greatly to the safety of people's go off daily.The most domestic monitoring technology for manhole cover anti-theft is the most perfect, but for the monitoring of manhole cover damage deformation also in the blank stage；The constructional aspect the most effectively monitoring well lid is the important problem that current municipal administration is faced.
Summary of the invention
The technical problem to be solved in the present invention is to fill up the deficiencies in the prior art, it is provided that a kind of monitoring system monitoring manhole cover damage and deformation, the working condition of well lid is effectively reacted to pipe network operation personnel, ensures civic safety.
To this end, concrete scheme of the present invention is as follows:
Well lid DEFORMATION MONITORING SYSTEM based on piezoelectric film sensor, including PVDF piezoelectric film sensor, signal processing module, A/D converter, single-chip microcomputer and communication module；Described PVDF piezoelectric film sensor is spirally laid in bottom well lid, the wire of PVDF piezoelectric film sensor is drawn and is connected with the input of described signal processing module, the outfan of described signal processing module is connected with the input of A/D converter, the outfan of described A/D converter is connected with the input of single-chip microcomputer, and the outfan of described single-chip microcomputer is connected with the input of communication module.
Concrete, the one side of described PVDF piezoelectric film sensor is bonded in bottom well lid by UV-cured resin, and the another side of PVDF piezoelectric film sensor is bonded with the polyethylene film that a layer thickness is 10 μm.
Concrete, described PVDF piezoelectric film sensor includes PVDF piezoelectric membrane, fits in upper electrode surface and the bottom electrode face of PVDF piezoelectric membrane upper and lower surface respectively, and two connections have the crimp type terminal of wire；Upper electrode surface is integrated with PVDF piezoelectric membrane cross-under by one described crimp type terminal by tubular rivet, bottom electrode face is integrated with PVDF piezoelectric membrane cross-under by another described crimp type terminal by tubular rivet, and the wire of two crimp type terminals is drawn in the same direction in same level.
Concrete, described A/D converter selects model to be AD620.
Concrete, described single-chip microcomputer selects model to be MSP430F149.
The beneficial effects of the present invention is:
The present invention is by being arranged on the PVDF piezoelectric film sensor of well lid bottom surface, production wells cap-shaped variable data, PVDF piezoelectric film sensor is laid in the shape of a spiral, can comprehensively monitor the deformed condition of well lid and be translated into the signal of telecommunication, this signal of telecommunication can reflect the general status of manhole cover damage deformation.Signal processing module obtains this signal of telecommunication by transfer wire, and is amplified this signal of telecommunication, and amplified signal of telecommunication data after A/D converter is changed are through wire transmission to single-chip microcomputer, and data are analyzed processing by single-chip microcomputer；When PVDF piezoelectric transducer logged well capping deflection exceedes the threshold values pre-set, illustrating that well lid occurs breakage deformation, single-chip microcomputer, with being sent to responsible department by communication module by warning message, facilitates responsible department to get rid of risk in time.
The present invention installs facility, flexible operation, and monitoring sensitivity is high, can react to pipe network operation personnel in time by the working condition of well lid, effectively ensure civic safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the front view of PVDF piezoelectric film sensor；
Fig. 3 is the top view of PVDF piezoelectric film sensor；
Fig. 4 is PVDF piezoelectric film sensor laying schematic diagram bottom well lid.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further details.
With reference to the well lid DEFORMATION MONITORING SYSTEM based on piezoelectric film sensor shown in Fig. 1, it includes PVDF piezoelectric transducer module T100, signal processing module T200, A/D converter T300, single-chip microcomputer T400 and gsm communication module T500.
The bottom of well lid 1 spirally it is laid in reference to the T100 of PVDF piezoelectric film sensor shown in Fig. 4, ensure that PVDF piezoelectric film sensor T100 can comprehensively monitor the deformed condition of well lid 1, the wire 2 of the T100 of PVDF piezoelectric film sensor is drawn and is connected with the input of signal processing module T200, the outfan of signal processing module T200 is connected with the input of A/D converter T300, the outfan of A/D converter T300 is connected with the input of single-chip microcomputer T400, and the outfan of single-chip microcomputer T400 is connected with the input of gsm communication module T500.
With reference to shown in Fig. 2 and Fig. 3, in order to ensure connection good between wire 2 and PVDF piezoelectric membrane 3, the PVDF piezoelectric film sensor of the present invention selects tubular rivet 7 and crimp type terminal 6 to carry out penetrating being connected with upper electrode surface 4 and bottom electrode face 5 respectively by two wires 2.And the wire 2 of two crimp type terminals 6 of upper and lower two electrode surfaces connections is drawn in the same direction in same level, ensure the most incoming front end circuit of the signal of telecommunication to greatest extent.
In the present invention, PVDF piezoelectric film sensor T100 is the lower surface being fixed on well lid 1 by UV-cured resin, also bond outside it polyethylene film that a layer thickness is 10 μm, connected by the quick-setting resin of ultraviolet light, PVDF piezoelectric film sensor can be effectively prevented to be short-circuited or loose contact, it is ensured that the stability of signal output.
Signal processing module T200 is for the amplification of signal of telecommunication one-level, low-pass filtering and the two grades of processing and amplifying that gather PVDF piezoelectric film sensor T100, one-level amplifies employing double operational LM358, carrying out two grades of amplifications after RC low pass circuit again, double operational LM358 has also been used in two grades of amplifications.The signal of telecommunication of collection is amplified to meet the requirement of A/D transducer T300 then；A/D converter T300 has selected model AD620, and its power is low, be easy to integrated installation.
Single-chip microcomputer T400 select for MSP430F149 model single-chip microcomputer, be one 16 super low-power consumption processors with reduced instruction set computer (RISC) and mixed signal.This single-chip microcomputer has 48 I/O mouths, super low-power consumption MCU based on flash memory or ROM, can realize 12 A/D conversions and the memory serial extension of Hardware I2C serial bus interface of two-way.This single-chip microcomputer uses DMA module to improve data transmission bauds, its running voltage is between 1.8V 3.6V, there is 60KB flash memory and simulation and intelligent digital peripheral hardware, have that disposal ability is strong, an advantage such as fast operation and super low-power consumption, meet the connected requirement of modules.
The work process of the present invention is as follows:
The signal of telecommunication of PVDF piezoelectric film sensor production wells cap-shaped variable data, this signal of telecommunication can reflect the general status of manhole cover damage deformation.Signal processing module obtains this signal of telecommunication by transfer wire, and is amplified this signal of telecommunication, and amplified signal of telecommunication data after A/D converter is changed are through wire transmission to single-chip microcomputer, and data are analyzed processing by single-chip microcomputer；When the well lid facial disfigurement amount that PVDF piezoelectric transducer is monitored exceedes the threshold values pre-set, illustrate that well lid occurs breakage deformation, single-chip microcomputer is with being sent to responsible department by communication module by warning message, maintainer, maintainer receives warning message by terminal unit (such as PC or intelligent mobile terminal), keeps in repair well lid accordingly in time.
The above; being only the preferable detailed description of the invention of the present invention, but scope is not limited thereto, any those familiar with the art is in the technical scope of present disclosure; the change that can readily occur in or replacement, all should contain within protection scope of the present invention.Therefore scope is as the criterion with the protection domain of claims.
Claims (5)
1. well lid DEFORMATION MONITORING SYSTEM based on piezoelectric film sensor, it is characterised in that include PVDF piezoelectric film sensor, signal processing module, A/D converter, single-chip microcomputer and communication module；Described PVDF piezoelectric film sensor is spirally laid in bottom well lid, the wire of PVDF piezoelectric film sensor is drawn and is connected with the input of described signal processing module, the outfan of described signal processing module is connected with the input of A/D converter, the outfan of described A/D converter is connected with the input of single-chip microcomputer, and the outfan of described single-chip microcomputer is connected with the input of communication module.
Well lid DEFORMATION MONITORING SYSTEM based on piezoelectric film sensor the most according to claim 1, it is characterized in that, the one side of described PVDF piezoelectric film sensor is bonded in bottom well lid by UV-cured resin, and the another side of PVDF piezoelectric film sensor is bonded with the polyethylene film that a layer thickness is 10 μm.
Well lid DEFORMATION MONITORING SYSTEM based on piezoelectric film sensor the most according to claim 1, it is characterized in that, described PVDF piezoelectric film sensor includes PVDF piezoelectric membrane, fit in upper electrode surface and the bottom electrode face of PVDF piezoelectric membrane upper and lower surface respectively, and two connections have the crimp type terminal of wire；Upper electrode surface is integrated with PVDF piezoelectric membrane cross-under by one described crimp type terminal by tubular rivet, bottom electrode face is integrated with PVDF piezoelectric membrane cross-under by another described crimp type terminal by tubular rivet, and the wire of two crimp type terminals is drawn in the same direction in same level.
Well lid DEFORMATION MONITORING SYSTEM based on piezoelectric film sensor the most according to claim 1, it is characterised in that described A/D converter selects model to be AD620.
Well lid DEFORMATION MONITORING SYSTEM based on piezoelectric film sensor the most according to claim 1, it is characterised in that described single-chip microcomputer selects model to be MSP430F149.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610275625.8A CN105973139A (en) | 2016-04-29 | 2016-04-29 | Piezoelectric film sensor-based manhole cover deformation monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610275625.8A CN105973139A (en) | 2016-04-29 | 2016-04-29 | Piezoelectric film sensor-based manhole cover deformation monitoring system |
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| CN105973139A true CN105973139A (en) | 2016-09-28 |
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| CN201610275625.8A Pending CN105973139A (en) | 2016-04-29 | 2016-04-29 | Piezoelectric film sensor-based manhole cover deformation monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592779A (en) * | 2018-04-08 | 2018-09-28 | 大连理工大学 | A kind of combined type curvature sensor based on piezoelectric membrane |
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| JP2002340700A (en) * | 2001-05-14 | 2002-11-27 | Matsushita Electric Ind Co Ltd | Piezoelectric sensor |
| CN1680815A (en) * | 2004-04-06 | 2005-10-12 | 欧进萍 | Local monitoring wireless sensor of vinylidene difluoride |
| CN2874424Y (en) * | 2006-01-25 | 2007-02-28 | 欧进萍 | PVDF piezoelectric film glue base package strain meter |
| CN102622863A (en) * | 2012-04-02 | 2012-08-01 | 施阁 | System for monitoring real-time status of damage, upwarp and theft of pit well cover |
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2016
- 2016-04-29 CN CN201610275625.8A patent/CN105973139A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002340700A (en) * | 2001-05-14 | 2002-11-27 | Matsushita Electric Ind Co Ltd | Piezoelectric sensor |
| CN1680815A (en) * | 2004-04-06 | 2005-10-12 | 欧进萍 | Local monitoring wireless sensor of vinylidene difluoride |
| CN2874424Y (en) * | 2006-01-25 | 2007-02-28 | 欧进萍 | PVDF piezoelectric film glue base package strain meter |
| CN102622863A (en) * | 2012-04-02 | 2012-08-01 | 施阁 | System for monitoring real-time status of damage, upwarp and theft of pit well cover |
Non-Patent Citations (4)
| Title |
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| 战锋: "基于压电材料的结构应变在线监测系统研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
| 曹露春: "钢渣混凝土窨井盖研究", 《混凝土与水泥制品》 * |
| 朱金海: "PVDF压电薄膜及其传感器的制备与性能研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
| 赵守忠等: "《传感器技术及工程应用》", 31 August 2013, 中国铁道出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592779A (en) * | 2018-04-08 | 2018-09-28 | 大连理工大学 | A kind of combined type curvature sensor based on piezoelectric membrane |
| CN108592779B (en) * | 2018-04-08 | 2019-06-21 | 大连理工大学 | A kind of combined type curvature sensor based on piezoelectric membrane |
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Application publication date: 20160928 |