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

Abstract

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.

Description

technical field [0001] The invention relates to an automatic positioning method for an ultrasonic probe, in particular to an automatic positioning method for an ultrasonic probe based on air bag pushing and air pressure detection. Background technique [0002] Ultrasonic bone densitometers currently on the market are divided into two categories, measuring the forearm tibia and the heel bone. Both types of bone density require a pair of ultrasonic probes to be installed opposite to each other. By testing the time for ultrasound to pass from the transmitter probe through the detected bone to the receiver probe, the ultrasonic velocity in the bone is calculated. According to the propagation of ultrasound in objects of different densities The characteristics of different speeds can obtain the average density of bones, and then judge the bone quality level of the subject. [0003] It can be said that the ultrasonic bone densitometer is essentially an instrument for measuring the...

AI Technical Summary

Problems solved by technology

[0008] Disadvantages: Lack of adaptability in actual use, the size of the detected part, whether it is the arm or the heel, varies from person to person

[0012] Disadvantages: In order to ensure the accuracy of detection in actual use, the relative distance when the probe reaches the detection position is fixed, so there are still problems in solution 1

[0016] Disadvantages: It must be operated by a special person, such as a trained doctor or nurse, which undoubtedly greatly affects the speed of use of the equipment

The physical examination system that is becoming more and more popular nowadays is usually unattended or only one or two operators need to use multiple instruments to test multiple testers at the same time. It is obviously inappropriate to use an instrument that is operated by a dedicated person.

At the same time, theoretically accurate measurement depends on the accuracy of each operation of the operator. Even if a module of standard size is used for multiple detections, different distance readings will be caused by the operator pushing the probe forward, which will affect the detection results.

[0017] It can be seen from the above that the shortcomings of the existing schemes 1 and 2 are mainly to ensure the positioning accuracy of the distance parameters in the measurement, using a fixed measurement distance, which cannot adapt to the changing situation in the actual detection

Option 3 uses manual operation, which has good adaptability, but the contact between the probe and the measured part is based on the subjective judgment of the operator, which affects the accuracy instead.

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