Subject GE 105 Introduction to Engineering Design Instructor
Subject: GE 105 - Introduction to Engineering Design Instructor: Dr. Raja Rizwan Hussain College of Engineering King Saud University Tutorial 7 Human Factor in Design
Human Factors in Design; � Anthropometric factors � Ergonomic factors � Physiological factors � Psychological factors
Anthropometric factors � Human measurements etc.
Ergonomic factors � Design factors intended to maximize productivity by minimizing operator fatigue and discomfort
Example: Chair ergonomic posture
Example: computer ergonomic posture
Physiological factors � Related with human body functions Psycological factors � Refers to things that can influence the functions, attitude and characteristics of the human mind
Question 1 State and comments on human factors that you will consider in the design of vacuum cleaner
Human Factors will be considered : Anthropometric Factors H • Height range 145 -175 cm. Average 155 cm • People comfort if hold the grip around the waist. Waist height +/- ½ of height = 85 cm • H =85 cm • The length can be adjust +/ - 10 cm
Ergonomic Factors Handle Shape Handle can be rotate Comfort Grip Power Button near to the finger that grip Safety : Auto off if there are overload/overheat/short-circuit • Easy to handle • • •
Physiological Factors • Noise level below 50 d. B • Frequency range (humans audible range of frequencies is usually said to be 20 Hz to 20 k. Hz) (20, 000 Hz) Psychological Factors • Good shape • When the handled is release the device will turn off automatically • Easy to move
Question 2 Sketch a wheel chair and comment on their designs based on the human factors consideration.
Question 3 Sketch a shower box and comment on their designs based on the human factors consideration.
Question 4 State and comments on human factors that you will consider in the design of a bicycle.
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