Wireless acquisition and transmission system of the sensing signals of the smart cement-based sensors is designed for
stress/strain monitoring of concrete structures, the conception and the sensing principle of smart cement-based sensors
are introduced, and the design method is presented based on the characters of the signals of smart cement-based sensors
and the modularized program. The operating principle of the wireless acquisition and transmission system is especially
analyzed, and the hardware circuit and the integration method are discussed in detail. The experiment of the designed
wireless acquisition and transmission system is finished, and the experimental results show that the presented wireless
acquisition and transmission system of the sensing signals of smart cement-based sensors has such advantages as simple
circuit, easy to realize, high reliability, low cost, convenient setting and good practicability, and it is suitable for
application in health monitoring of concrete structures.
Carbon fiber reinforced cement (CFRC), which mainly composed of hardened cement and short cut carbon fibers, possesses piezoresistive effect, and could be used to produce new type of compressive stress sensors. As having character of low cost, good compatibility with concrete and high durability, CFRC sensor extraordinary adapt to be used in the field of long time health monitoring of concrete structures. Based on large quantity of duplicate tests, the influence of temperature and humidity on electrical specific resistance of CFRC was studied. The function of volume content of carbon fiber or silica fume on above influence is also discussed. Results show that specific resistance of CFRC will decrease with increase of temperature or relative humidity, and above changing have no relationship with carbon fiber or silica fume volume content.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.