Cavity deformation reset detection device and reset detection method based on inertial navigation system

Abstract

A cavity deformation resetting detection device and a resetting detection method based on an inertial navigation system relate to cavity deformation resetting detection. The detection device is provided with a cavity to be tested, two inertial navigation devices, a microprocessor, a communication module and a display device. Fix the inertial navigation device on the surface of the moving cavity to be measured. By detecting the change of the physical quantity on the surface of the cavity, the reset detection of the inertial navigation device is divided into the initial measurement value stage and the restoration measurement stage. In the initial stage, the inertial navigation device measures the physical quantity of the cavity. The maximum value, minimum value and preset value of the parameter, calculate the ratio between the preset value and the two maximum values; in the recovery stage, the inertial navigation device measures the maximum value, minimum value and predicted value of the corresponding physical parameters of the cavity, and the predicted value If it is at the equiproportional point of the difference between the preset value and the maximum value and the minimum value, the cavity returns to its original position; the microprocessor obtains the inertial navigation measurement data and transmits it to the display device, and the physical parameters during the cavity movement can be observed in real time The change of the cavity, if the cavity changes to the preset situation, the display device will issue a prompt.

Description

technical field [0001] The invention relates to cavity deformation reset detection, in particular to a cavity deformation reset detection device and a reset detection method based on an inertial navigation system. Background technique [0002] Cavity reset detection is a key technology in medical treatment and industry, and plays an undoubted key role in clinical medicine and industrial production. The cavity that expands and contracts according to a certain law will show periodic changes, and the displacement of the material in the cavity will also change accordingly. When detecting, processing and analyzing the substances in the cavity at different times, it is often necessary to move the substances in the cavity to the same position, that is, the expansion and contraction of the cavity are the same. Therefore, the cavity reset detection method must meet the requirements of accuracy, precision, fast real-time and other requirements. In medical applications, the traditiona...

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Problems solved by technology

In medical applications, the traditional solution is to let the patient remember the depth of breathing, which is not only inefficient, has great subjective uncertainty, and lacks standardization, but also greatly affects the measurement results; in industrial applications, the traditional solution It is to measure the volume change when the cavity expands and contracts. This method has relatively large limitations and is only suitable for cavities that are not large in size and do not change drastically.

In recent years, with the advancement of mechanical technology, physical and mechanical methods have been gradually applied to cavity reset detection. This method can effectively detect obvious cavity deformation, but it cannot accurately detect weak deformation, and it is also difficult for rapidly changing cavities. not real-time

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