3.2 Sensor technology
Sensor technology is used to perceive unknown working environment. Due to the clear division of labor in the construction industry, the research and development of targeted construction robots need sensors with different functions, such as pressure sensors, visual sensors and voice-controlled sensors. The force required by the plate installation machine to clamp the plate needs to be precisely controlled. N.Sakoda et al. (2012) developed an absolute pressure sensor based on PVT phase characteristics and Burnett method. After testing, the maximum pressure can reach 100 MPa. Robot vision is equivalent to human ”eyes”, and its technology plays a very important role in robot movement. Samad et al. (2017) implemented a dynamic lightweight vision sensor network based on background subtraction technology and image restoration technology to achieve a short transition delay in robot detection. Voice-controlled sensors can control robots through human language. Budiharto et al. (2017) developed an educational robot based on voice-controlled sensor technology based on language recognition module, with an average correct recognition rate as high as 73.3%.