Human sebum thickness measuring instrument with ultrasonic waves controlled by pressure

Abstract

The invention discloses a human sebum thickness measuring instrument capable of controlling ultrasonic waves through pressure, and belongs to the field of human physiological signal measurement. The pressure sensor and the ultrasonic probe simultaneously act on the human skin surface; the pressure sensor measures the pressure applied by the ultrasonic probe to the measured part of the human body;the signals are sent to an analog-to-digital converter of a single-chip microcomputer through an operational amplifier circuit; the single-chip microcomputer judges that pressure reaches threshold value, a high-voltage excitation circuit excites the ultrasonic probe to emit ultrasonic waves; the ultrasonic waves pass through human body subcutaneous adipose tissue and then return echo signals; echosignals are amplified by an amplifying circuit and then enter the single-chip microcomputer; the single-chip microcomputer calculates the average walking time of the ultrasonic waves in the human body fat tissue; and the thickness of the human body subcutaneous fat is obtained by multiplying the propagation speed of the ultrasonic waves in the human body fat tissue, and the measured thickness ofthe human body subcutaneous fat is displayed on the display module.

Description

technical field [0001] The invention relates to an instrument for measuring the thickness of human subcutaneous fat by using ultrasonic waves, belonging to the field of human physiological signal measurement. Background technique [0002] Obesity is a common risk factor for chronic diseases such as cardiovascular disease, type 2 diabetes, hypertension, hyperlipidemia, and malignant tumors. The manifestation of obesity is the continuous accumulation of fat in the human body, of which subcutaneous fat accounts for 40–60% of the total body fat, so detecting the thickness of subcutaneous fat can reflect the fat distribution in various parts of the body. [0003] In clinical testing, magnetic resonance imaging (MRI), computed tomography (CT), dual-energy X-ray absorptiometry (DEXA), and ultrasound imaging techniques can all accurately measure adipose tissue thickness, but the equipment is bulky and expensive. Operators need professional training. CT and DEXA methods are also su...

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Problems solved by technology

The near-infrared light measurement method is simple and easy to operate, but due to the limited penetr

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