Parametric Design of Height and Weight Measuring System

Abstract: Anthropometry medical measuring system is very important in health sector in taking the physical measurement of patients. The research focused on the need to consider a parametric design of height and weight measuring system with the enlightenment of basic design principle. The materials involved for the parametric design of this medical measuring system under study are Load Cells with Strain Gauge (weight sensor), Sonar with Ultrasonic Sensors (height sensor), Liquid Crystal Display, Medium Density Fibreboard, Rubber Mounting, Microcontroller Arduino Board and other important accessories. The results from the design analysis revealed that the system weight sensor platform has shear force of 630 N, maximum bending moment of 126 Nm. The compressive stress that could be induced during measurement of maximum human weight is 6 kN/m2 and stress that could be induced due to maximum bending moment is amount to 605 N/m2. The amount by which weight sensor platform could deflect when subjected to bending moment is 0.000004 m. These values indicate that the design is safe for operation which is far lesser than the property parameters of the materials used for the weight sensor platform. The designed height of the system for the measuring of the height is about 2.1 m (7 Feet), the area of the stand platform for the measuring of the weight is about 0.2 m2. The weight sensor for the design could measure from 1kg to 200 kg with accuracy of about ±0.1 kg and height measuring sensor could measure through a scanning range of 0.4 to 2.5 m with accuracy of about ±1 mm.

Keywords: Anthropometry, Manikin, Medical measuring system, Parametric design, Sensor.