CN103024940A - Carbon nano tube cement based composite sensor testing system - Google Patents
Carbon nano tube cement based composite sensor testing system Download PDFInfo
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- CN103024940A CN103024940A CN2012105716907A CN201210571690A CN103024940A CN 103024940 A CN103024940 A CN 103024940A CN 2012105716907 A CN2012105716907 A CN 2012105716907A CN 201210571690 A CN201210571690 A CN 201210571690A CN 103024940 A CN103024940 A CN 103024940A
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Abstract
Disclosed is a carbon nano tube cement based composite sensor testing system. A strain sensor unit is made of a carbon nano tube cement based composite sensor, the strain sensor unit is embedded into a to-be-tested node to monitor civil engineering project structural load and effects in real time and output in forms of electric signals. A temperature humidity compensation sensor unit is place at the node to monitor area temperature humidity indexes. The carbon nano tube cement based composite sensor and the temperature humidity compensation sensor form a sensor subsystem. A data acquisition processing and communication system is configured to transmit data wirelessly by the support of a power supply unit and a radio frequency power amplifier. A base station node receives and processes data information, a gateway device connected with the base station node is used for converting wireless sensor network protocols into IP (internet protocol) so as to form a base station together. Data is transmitted to a monitoring center through the Internet to build the healthy engineering structure monitoring system based on a wireless sensor network.
Description
Technical field
The present invention relates to a kind of engineering structure sensor testing system, belong to the engineering structure health monitoring field.
Background technology
Monitoring structural health conditions becomes the study hotspot of the outer engineering field of Present Domestic.In numerous large scale civil engineering building fields such as bridge, tunnel, highway, dam and Military Application field, realize multi-parameter, multi-functional, distributed in real time, the sensing detection network is our goal in research always.Large-scale civil engineering work is subject to the coupling factor of the catastrophe such as the load action, material corrosion of environment is aging for a long time, inevitably produces the decay of structural damage and drag, thereby causes the resistivity of natural calamity is descended, and causes the catastrophic failure of burst.Affected by it for heavy construction structural life-time and service ability are slowed down, avoid causing burst accident, be necessary civil engineering structure is realized long-range, real-time, online automatic structure health monitoring.
In the real-time health monitoring systems of engineering structure, sensor subsystem is comprised of a plurality of various kinds of sensors and sensing network as health monitoring systems foremost and the most basic subsystem.Transducer can be used for load and the response message of perceptual structure, and with physical quantity formal outputs such as electricity, light, sound.The perception material that grows up at present and sensing element mainly contain optical fiber, resistance-strain silk, fatigue life silk, piezoelectric, carbon fiber, semi-conducting material and marmem etc.Can make large-scale surface adhesion type or flush type sensing distribution array with these perception materials and sensing element, thereby make the important component of structure or integral body have apperceive characteristic, with the function of implementation structure Real-Time Monitoring and safe early warning.These transducers are used in the concrete works monitoring structural health conditions and are also had some drawbacks and problem.The auxiliary equipment a large amount of such as the needs of Fibre Optical Sensor, the difficulty of deploying to ensure effective monitoring and control of illegal activities, cost is expensive; Piezoelectric (such as piezoelectric ceramic etc.) is multiplex in simple member in application, and does not mate on material with concrete material, and lacks project quality inspection; Marmem or expensive, or unstable properties, and in the non-resilient stage, the relation of resistance and strain is non-linear, brings difficulty etc. to signal analysis.For Reduce measurement error, guarantee that the coupling of transducer and surrounding medium is very important.In the real-time health monitoring of large-scale concrete engineering structure, need to utilize the new sensitive material with cement concrete medium coupling to develop novel sensor (such as carbon nano-tube cement-base composite material transducer, the patent No.: ZL201220106580.9), reach the good result that transducer and surrounding medium mate fully.
Along with the raising that monitoring requires, number of sensors, there is the complexity of pending data volume and system all will greatly increase.If the wired mode of employing tradition is carried out monitoring structural health conditions, not only wiring is loaded down with trivial details, and the heavy burden of a large amount of wiring meeting increase monitoring targets, and the time that later maintenance is spent and funds also are considerable.This traditional centralized monitoring system of serial also can affect reliability and the flexibility of system to a great extent simultaneously.Therefore, be necessary to study employing distributed wireless technology and substitute traditional centralized cable technology.Adopt wireless sensor network technology, the various environment in Real-Time Monitoring, perception and the collection network distributed areas or the information of monitoring target, and these information are processed and transmit.
Utilize New Type of Carbon nanotube cement-base composite material transducer to set up sensor testing system, adopt wireless sensor network technology, consist of carbon nano-tube cement-base composite material sensor testing system, the problem, the transmission range that have not only solved wiring are greatly improved, and system stability, be not subject to the destruction of environment.To have extremely important theory significance and practical value to engineering structure health monitoring.
Summary of the invention
The present invention utilizes carbon nano-tube cement-base composite material transducer measuring system constructing, adopts wireless sensor network technology, is used for the real-time health monitoring of engineering structure, and technical scheme is as follows:
1, utilizes carbon nano-tube cement-base composite material sensor production strain transducer unit, embed layout at the need test node, civil engineering structure load and effect are carried out Real-Time Monitoring, and export with the signal of telecommunication.Simultaneously lay the temperature and humidity compensation sensor unit at this Nodes, carry out the humiture index of monitored area.Carbon nano-tube cement-base composite material transducer and temperature and humidity compensation transducer consist of sensor subsystem, are the most basic and subsystems foremost of health monitoring systems.
2, set up data acquisition process and communication subsystem, the digital signal and the data that receive are carried out the operations such as A/D conversion, digital filtering denoising, by the support of power supply unit and radio-frequency power amplifier, data are carried out wireless transmission.
3, base-station node receives and deal with data information, and the gateway device that links to each other with base-station node is used for wireless sensor network protocols is converted to the IP network agreement, and it and base-station node form the base station jointly.In the IP network zone, can data be sent to Surveillance center by the internet, set up the engineering structure health monitoring system based on wireless sensor network.
Content of the present invention produces following beneficial effect:
(1) carbon nano-tube cement-base composite material transducer and surrounding medium mate fully, Reduce measurement error;
(2) adopt wireless sensor network technology, the problem, the transmission range that have not only solved wiring are greatly improved;
(3) utilize the temperature and humidity compensation transducer, guarantee system stability, be not subject to the destruction of environment.
Description of drawings
Accompanying drawing is carbon nano-tube cement-base composite material sensor testing system schematic diagram.
Embodiment
With reference to accompanying drawing, embodiments of the invention are described in detail.
Embed 30mm * 30mm * 120mm carbon nano-tube cement-base composite material transducer and temperature and humidity compensation transducer at the need test node.Set up data acquisition process and communication subsystem, the digital signal and the data that receive are carried out the operations such as A/D conversion, digital filtering denoising, by the support of supplied for electronic system and radio-frequency power amplifier, data are carried out wireless transmission.Base-station node receives and deal with data information, and continuous gateway device is converted to the IP network agreement with wireless sensor network protocols, by the internet data is sent to Surveillance center, sets up the engineering structure health monitoring system based on wireless sensor network.
Claims (1)
1. carbon nano-tube cement-base composite material sensor testing system, comprising uniting utilizes carbon nano-tube cement-base composite material transducer and temperature and humidity compensation transducer to consist of sensor subsystem, data acquisition process and radio communication subsystem, base station and control centre's subsystem, it is characterized in that: utilize carbon nano-tube cement-base composite material transducer and temperature and humidity compensation transducer to consist of sensor subsystem, utilize wireless network transmission technology, set up the engineering structure health monitoring system based on carbon nano-tube cement-base composite material transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012105716907A CN103024940A (en) | 2012-12-26 | 2012-12-26 | Carbon nano tube cement based composite sensor testing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105716907A CN103024940A (en) | 2012-12-26 | 2012-12-26 | Carbon nano tube cement based composite sensor testing system |
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| CN103024940A true CN103024940A (en) | 2013-04-03 |
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| CN2012105716907A Pending CN103024940A (en) | 2012-12-26 | 2012-12-26 | Carbon nano tube cement based composite sensor testing system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868704A (en) * | 2014-03-05 | 2014-06-18 | 卿新林 | Distributive multifunctional structure state detection system |
| RU182473U1 (en) * | 2018-01-10 | 2018-08-20 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") | Device for monitoring the state of reinforced concrete structures |
| CN108801784A (en) * | 2018-04-03 | 2018-11-13 | 华北理工大学 | A kind of carbon nano tube compound material structural healthy monitoring system |
| CN109975409A (en) * | 2019-04-22 | 2019-07-05 | 济南大学 | Wireless acoustic emission sensor based on cement base piezoelectric composite material |
| RU203093U1 (en) * | 2020-10-26 | 2021-03-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") | Device for monitoring the state of reinforced concrete structures |
| CN114518067A (en) * | 2022-04-14 | 2022-05-20 | 西南交通大学 | Data acquisition instrument and monitoring system based on carbon nanotube composite sensor |
Citations (2)
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| CN102162773A (en) * | 2010-12-24 | 2011-08-24 | 广州工程总承包集团有限公司 | Clustered-type bridge health real-time monitoring system and method based on wireless communication technology |
| CN202453128U (en) * | 2012-03-14 | 2012-09-26 | 山东科技大学 | Sensor made of carbon nano tube cement based composite materials |
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2012
- 2012-12-26 CN CN2012105716907A patent/CN103024940A/en active Pending
Patent Citations (2)
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| CN102162773A (en) * | 2010-12-24 | 2011-08-24 | 广州工程总承包集团有限公司 | Clustered-type bridge health real-time monitoring system and method based on wireless communication technology |
| CN202453128U (en) * | 2012-03-14 | 2012-09-26 | 山东科技大学 | Sensor made of carbon nano tube cement based composite materials |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868704A (en) * | 2014-03-05 | 2014-06-18 | 卿新林 | Distributive multifunctional structure state detection system |
| RU182473U1 (en) * | 2018-01-10 | 2018-08-20 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") | Device for monitoring the state of reinforced concrete structures |
| CN108801784A (en) * | 2018-04-03 | 2018-11-13 | 华北理工大学 | A kind of carbon nano tube compound material structural healthy monitoring system |
| CN109975409A (en) * | 2019-04-22 | 2019-07-05 | 济南大学 | Wireless acoustic emission sensor based on cement base piezoelectric composite material |
| RU203093U1 (en) * | 2020-10-26 | 2021-03-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") | Device for monitoring the state of reinforced concrete structures |
| CN114518067A (en) * | 2022-04-14 | 2022-05-20 | 西南交通大学 | Data acquisition instrument and monitoring system based on carbon nanotube composite sensor |
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Application publication date: 20130403 |