1. I Physical Factors ERGONOMICS factors consider Designers Objectives 3 human of o I errors ° I stress ° T ° T ease ° T operational ° T performance . 2 . 3 factors factor design to products ensure ergonomic meet needs : fatigue t of factors use comfort reliability , maintenance , : Anthropometric . human safety Human I ergonomics and , Psychological factors Physiological factors Human I ANTHROPOMETRIC . The S measurement different ° the of ergonomics from form human ← people ← Definition ° e. g Hair . shape ↳ handle of it data → measurements t be held shape , height etc designs to properties physical of . users Skin fold digital - scanners calipers computer Harpenden - calipers Torso - 3D - - Motion modelling anthropometer capture humans : Reliability ° - Tool used Training - - - Time of Person 's Each - ° Ethics ° Types of limitations of head the from Stadiometer . 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( computer inability friction etc → wool frequency , , perfume , I encourage Data grip , comfort , , of ease volume uncommon Aroma quality of , , texture : Taste emotional , expensive → readability : Hearing Touch memories : Gives ° ° when person a Texture ° music . clock body - trigger Can of ° g . : ° ° e. : Effects ° ° efficiency 's ambience Colour ° signals ) understand : ↳ will brains differently concentration Effects Smell I how process : light a reacts worker Effects o I work : Effects ° individuals everyone ° brain the by stimuli how Temperature processed is it because , for , height , cost , age etc different for . data ) ( numerical quantity opinion but factors quality based not I measured everyone , no scale ) may remind you of Types ↳ data in developed 1946 . categorical I : : NOMINAL . ° named by means splits ° ° aka categories by names tables doesn't ° 2. into them rank ORDINAL ° ↳ ° ° Continuous difference 4. ordinal ° also Know satisfaction → necessary scale scale scale measurements , weight , 0 does O , real a e. 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The ↳ g first to sounds notice into walking . senses 5 restaurant a Smell ° Taste ° Touch Your system processing Application design to You then you to it and you food smell , get used it to information the Alertness signals STORAGE OUTPUT → PRO CEDES → Response PROCESSES stimulus How A react will you reaction : if - processes µ understand must Degenerate clients how caused , I brain your percieve by age world you accident , not , degenerate sensed : the etc how would not it percieve yay to able be process . : How alert You may when ° workers ° Factors be who : are . - that Things Physical : fear Fatigue alert have bombarded are senses your your - more information with or heighten senses productivity higher temperature brightness sound performance affect psychological Discomfort Pain when alert in situation particular a more are you in are you - - used brain your → relieving senses - get : INPUT → PROCESSES - first you , to signals send senses stimulus ° you Sound brain o then , sight Information ° road adapt senses o ° the on senses your , : The o ° surroundings the sleep ° ° used get we . can ° : - stress - Lack Mental : of motivation l sensory : Reduced - Boredom . : cognitive information processing - : hearing ) ability visual Reduced } , tactile abilities smell alertness to Switches ° of sense - danger Interest - Time - of day Ingested Environmental - Sound - Aroma - effects psychology Engineering ↳ ° alertness T I I hormones I alert e.g I wake shift drugs caffeine ) stress t I I e.g . sleep melatonin distract morale worker I depends beats on per minute design Promote ° ) alertness : : alertness - senses Sight light bright - etc . 5 the engage senses : : easiest ° ° e. g blue . red Sound appeal to sense calm = citrus Y hues stimulate = colours nature by , alertness : ° Sounds ° Sound Smell distract may design is person a productivity decreases - important very : ° Certain ° ↳ Taste powerful indirectly Most scents used create senses emotions certain provoke to all of brand I e.g image Starbucks . ) : ° Caffeine ° Carbohydrate crash n = § s ° - µ I ← crash sugar Touch : makes you tired very after of spike energy I > Time - consumption after sugar , carbohydrate of , caffeine spike of ) day induce ' up workers following the that lights Straubing , . sleep for important function you : you so , efficiency Workplace 5 T concentrate to smells induce effects - ability sharp . that light blue - soporifics - drugs humidity Y - chemicals how affect may hormones relieves body your sleep I regulates = sunlight of I light Temperature - lack hormones = interest lose you rythm of nutriets Stimulants ° amount balance Sleep - circadian - flight or posture - - on fight . make may activity depends - boredom - Muscular - threat or energy mind ) 1. 3 Physiological Factors PHYSIOLOGICAL available Data FACTORS for the anatomical main systems : Skeleton ° functions Respiratory o functions ° Heart o Muscle strength a ° Blood pressure ° Skin condition Central o Hand ° depth o your ' → body a Take sustain to ° to ° be able world cup in Qatar } we How is hear can grow limitations When you can of range you as Physical ° may Teenagers ↳ temperatures people . 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" to - material test MRI lose you etc CAPTURE in used ° DIGITAL : film to observe blood - JOINT twists - turns , COLLECTION DATA - analysis how gueFvhen com bio Y product 's Optimising physical Y how : - - - STRAIN of Incremental user physical under / mental for stress extended concentration 's relate characteristics physical to interaction ease convenience I location placement of frequently accessibility of equipments ) C ( frequency frequently used tasks performed equipment ) located together ) : injury damage over a period of with perceived is something psychological layout put are mechanical ri , workplace : effects senses anatomical human - of rotations , people y : person Type models devices FACTORS + ° computer monitors functions PHYSIOLOGICAL REPETITIVE 3d MEASUREMENTS skeletal ( into sensors FLEX Aims collected - : oxygen pressure - movements human pulse I heart - animations for - devices wearable - HUMANS industry technologies other ° . scan used ° lose you heat much MOTION ° design cold SCANNING - ° I hot is water much How - ° body MONITORING SKIN BOD movement muscle SCAN clothing . in impulses PHYSIOLOGICAL Shows - electrical checks - time : e.g . bad H posture t, efficiency good posture → Y long term injury time BIOMECHANICS ° study o Vitruvian ° links I ↳ strengths how . Shippen Importance organisms of 's man body does performance enhance turn to need one e.g knob door a shoes . this on : assumed are for capabilities with People - living movement weaknesses power to works capabilities - Y much used be May James ° at looks g simple - to ergonomics to → relation in laws 1490 man e. ° mechanical of population the design need may to adaptations suit them Repetition ° how - time each ↳ task the do to have how Y much force needed it seas it cycle If - they often 30 Formation it less or is considered repetitive → bad for skeleton disorder musculoskeletal of highly Duration ° length - ° talk the has completed be to Posture in Position - sitting Biomechanics User ° special ° Forces the , involved - - - against gravity while : standing , movement ; you make etc adaptations . be may for needed the user : Torsion - leverage Grip upright body your : arthritis I tools walk you way have hold you down disability of may which lying Y gait ° time of - turning - force applying pressure on a a force moving at a fukru① turning surface , measured in point Psl I pounds per square inch ) etc .
