Design of a level sensor applied on monitoring of the crane rotary base's horizontality

A new level sensor was developed for monitoring the crane rotary base's horizontality. The sensor utilized the dual-axis accelerometer SCA100T as sensitive element integrated digital signal processing, microcontroller technologies and LCD display technology which showed the angle of the crane rotary base and the horizontal plane on the LCD displayer by numerical forms. Experimental data analysis shows that the maximum error of the sensor is less than 0.015° to satisfy the monitoring request of the crane rotary base's horizontality.