Automatic ultrasonic probe location method based on gasbag drive and air pressure detection

The invention discloses an automatic ultrasonic probe location method based on gasbag drive and air pressure detection. The method comprises two ultrasonic probes which are oppositely arranged, and comprises the following location steps: a, a pressure threshold is preset according to the age information of a testee; b, the ultrasonic probes are connected with a gasbag by guide rails, an air pump is controlled to inflate the gasbag, and an ultrasonic probe mechanism is slowly pushed by the gasbag to move along the guide rails; c, a current pressure value is detected in real time by a pressure sensor, and when the pressure value reaches to the preset pressure threshold, the air pump is controlled to stop inflating; d, the distance between the two ultrasonic probes which are oppositely arranged is obtained. According to the automatic ultrasonic probe location method based on gasbag drive and air pressure detection, the probe mechanism is pushed to move in a way that the gasbag is inflated by using an air pump controller, different pressure thresholds are preset for testees of different ages by the matching of the pressure sensor, the self-adaption of movement of the ultrasonic probes is thus realized, and the location accuracy requirement is met.