Koyaya, yana yin ɓangaren waje don aiki: LEDs huɗu, multiplexer da girar accelerometer.
"MAXM86146 yana amfani da bayanan accelerometer don biyan kayan tarihi na motsi lokaci-lokaci kuma an inganta shi don siginar koren bugun jini guda biyu a lokaci guda," in ji kamfanin. “Wadannan koren sakonni guda biyu ana iya cimma su ta hanyar koyon daukar hoto biyu da leda daya ko kuma photodiode daya da kuma ledodi guda biyu. Oxygen jikewa yana buƙatar yin amfani da tsayin daka biyu na LED, wato ja da IR. Suna buƙatar raba hoto iri ɗaya da nisan rabuwa. ”
Moduleaukin yana ƙunshe da MAX86141 mai tashar tashoshi mai tashoshin tashoshi biyu tare da MAX32664C MCU da kuma na 3.8mm2PIN photodiodes.
A cikin guntun gaba, tagwayen 19bit ADCs suna karanta photodiodes kuma, kodayake ledojin na waje ne, an haɗa direbobin LED guda uku (suna buƙatar layin wadata su). Ana buƙatar multiplexer na waje don LEDs idan duk ayyukan da za a iya aiwatarwa za a aiwatar.
Arfin buƙata don rukunin shine samar da 1.8V guda ɗaya (ƙari da hasken LED), kuma rukunin yana tallafawa I2C sadarwa zuwa ga mai sarrafa bakuncin. "Abubuwan haɗin algorithms masu haɗaka suna daidaita saitunan analog na gaba don ƙarar sigina zuwa ƙarar sauti yayin rage ƙarfin amfani bisa ƙayyadaddun ayyuka" - na biyun da ɗayan algorithms yayi.
A samfurin 25 / s, ƙarshen ƙarshen yawanci yana buƙatar 10μA.
Akwai samfurin kimantawa (MAXM86146EVSYS #).
Shafin samfurin yana nan