The invention discloses a navigation
robot obstacle detection method and
system. The
system mainly comprises an
ultrasonic detection module, an ultrasonic scanning module, an
infrared detection compensation module and a
robot core control module, wherein the
ultrasonic detection module is mainly realized by amplifying a 40 kHz high-
voltage driving
signal and an ultrasonic receiving
signal. The module is erected on a scanning steering engine to realize front non-dead-angle 180-degree scanning detection. By combining
infrared range finding, the compensation of a navigation
robot ultrasonic blind region is realized. A
driving circuit is realized by establishing an
H bridge with a
field effect transistor. In a navigation robot, planar multi-point sensing is realized by using a pair of ultrasonic probes; the
range finding range can reach 5.9 m at farthest; and a detection blind region is reduced to 2 cm. The
system has the characteristics of low cost, small detection blind region, high anti-
diffraction capacity, high real-time property and the like and has broad industrialization prospect. The method and the system can be used for the fields of micro robot navigation, environmental detection, intelligent vehicle
active safety and the like.