{"id":5560,"date":"2020-08-11T07:25:33","date_gmt":"2020-08-11T07:25:33","guid":{"rendered":"http:\/\/test.vigilant.es\/?p=5560"},"modified":"2020-12-03T08:34:10","modified_gmt":"2020-12-03T08:34:10","slug":"leitor-biometrico-desinfecao-automatica-por-ultravioleta-tipo-c","status":"publish","type":"post","link":"https:\/\/vigilant.es\/pt\/leitor-biometrico-desinfecao-automatica-por-ultravioleta-tipo-c\/","title":{"rendered":"Leitor Biometrico | Desinfe\u00e7\u00e3o autom\u00e1tica por ultravioleta tipo-C"},"content":{"rendered":"

Provavelmente<\/span><\/span><\/span> todos <\/span><\/span><\/span>t<\/span><\/span><\/span>emos visto <\/span><\/span><\/span>j\u00e1<\/span><\/span><\/span> mu<\/span><\/span>itos<\/span><\/span><\/span> sistemas que prometen desinfetar todo tipo de entornos contra <\/span><\/span><\/span>a <\/span><\/span><\/span>Covid-19. <\/span><\/span><\/span>Uma destas tecnologi<\/span><\/span><\/span>as <\/span><\/span><\/span>s\u00e3o os <\/span><\/span><\/span>Ra<\/span><\/span>ios Ultravioleta. Vamos tentar explicar o que \u00e9 e c\u00f3mo funciona.<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

O qu\u00e9 s\u00e3o<\/b><\/span><\/span><\/span>? <\/b><\/span><\/span><\/span>Os<\/span><\/span><\/span> ra<\/span><\/span>ios ultravioleta s\u00e3o<\/span><\/span><\/span> LUZ, <\/b><\/span><\/span>mas duma cor que os nossos olhos<\/span><\/span><\/span> n<\/span><\/span>\u00e3o<\/span><\/span><\/span> conseguem ver<\/span><\/span><\/span>. <\/span><\/span>S\u00e3o tamb\u00e9m produzidos pelo Sol mas s\u00e3o atenuados pela atmosfera terrestre<\/span><\/span><\/span>, a<\/span><\/span>inda que a maior altura<\/span><\/span><\/span> atenuam-se menos e s\u00e3o mais intensos.<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

C<\/b><\/span><\/span>\u00f3<\/b><\/span><\/span><\/span>mo combatem aos microorganismos? <\/b><\/span><\/span><\/span>Este tipo de luz s<\/span><\/span><\/span>\u00f3<\/span><\/span><\/span> \u00e9 efetiva como germicida se a sua<\/span><\/span><\/span> COR <\/span><\/span><\/span>\u00e9 exatamente a que corresponde a 270 nan<\/span><\/span><\/span>\u00f3<\/span><\/span><\/span>metros. A<\/span><\/span><\/span> luz de<\/span><\/span><\/span>ssa longitude<\/span><\/span><\/span> de onda (des<\/span><\/span><\/span>sa<\/span><\/span><\/span> cor) t<\/span><\/span><\/span>em a capacidade<\/span><\/span><\/span> de <\/span><\/span><\/span>quebrar as cadeias de ADN\/ARN dos organismos vivos e denomina-se<\/span><\/span><\/span> UV-C <\/b><\/span><\/span><\/span>(Ultravioleta tipo C). Esta<\/span><\/span><\/span> cor <\/span><\/span><\/span>N<\/b><\/span><\/span>\u00c3O \u00c9<\/b><\/span><\/span><\/span> VIS<\/b><\/span><\/span>\u00cdVEL<\/b><\/span><\/span><\/span> p<\/b><\/span><\/span>elo<\/b><\/span><\/span><\/span> o<\/b><\/span><\/span>lho humano<\/b><\/span><\/span><\/span>. S<\/span><\/span>e lhe<\/span><\/span><\/span> m<\/span><\/span>o<\/span><\/span><\/span>stra<\/span><\/span>m<\/span><\/span><\/span> lu<\/span><\/span>z<\/span><\/span><\/span>es de cor violeta, es<\/span><\/span><\/span>ses dispositivos est\u00e3o gerando cores que n\u00e3o<\/span><\/span><\/span> s<\/span><\/span>\u00e3o<\/span><\/span><\/span> efectivas como germicidas <\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

Q<\/b><\/span><\/span><\/span>u<\/b><\/span><\/span>a<\/b><\/span><\/span><\/span>l <\/b><\/span><\/span>\u00e9 a dose<\/b><\/span><\/span><\/span> nece<\/b><\/span><\/span><\/span>s<\/b><\/span><\/span><\/span>s<\/b><\/span><\/span>\u00e1<\/b><\/span><\/span><\/span>ria? <\/b><\/span><\/span><\/span>Is<\/span><\/span><\/span>to <\/span><\/span><\/span>ir\u00e1 <\/span><\/span><\/span>depende<\/span><\/span><\/span>r<\/span><\/span><\/span> da <\/span><\/span><\/span>potencia <\/b><\/span><\/span><\/span>d<\/span><\/span>o gerador de luz. Tamb\u00e9m<\/span><\/span><\/span> d<\/span><\/span><\/span>a <\/span><\/span>distancia <\/b><\/span><\/span><\/span>\u00e0 s<\/span><\/span><\/span>uperficie a esterilizar (<\/span><\/span><\/span>lembrar que a potencia diminui<\/span><\/span><\/span> exponencialmente co<\/span><\/span><\/span>m<\/span><\/span><\/span> a distancia). <\/span><\/span><\/span>E<\/span><\/span><\/span> por <\/span><\/span><\/span>\u00fa<\/span><\/span>ltimo <\/span><\/span><\/span>o<\/span><\/span><\/span> TEMPO <\/b><\/span><\/span><\/span>em que seja<\/span><\/span><\/span> aplicada esta luz. Se<\/span><\/span><\/span> o<\/span><\/span><\/span> equip<\/span><\/span><\/span>amento<\/span><\/span><\/span> gerador<\/span><\/span><\/span> de luz a espalha<\/span><\/span><\/span> e<\/span><\/span>m<\/span><\/span><\/span> mu<\/span><\/span>itas cores provavelmente<\/span><\/span><\/span> ch<\/span><\/span><\/span>eg<\/span><\/span>uemos a ver algum<\/span><\/span><\/span> del<\/span><\/span><\/span>es como violeta. Nesse caso estaremos a <\/span><\/span><\/span>desperdi<\/span><\/span><\/span>\u00e7ar<\/span><\/span><\/span> energ<\/span><\/span>i<\/span><\/span><\/span>a <\/span><\/span>e<\/span><\/span><\/span> s\u00f3<\/span><\/span><\/span> a<\/span><\/span><\/span> fra<\/span><\/span><\/span>\u00e7\u00e3o<\/span><\/span><\/span> de <\/span><\/span><\/span>UV-C <\/b><\/span><\/span><\/span>ger<\/span><\/span>ada<\/span><\/span><\/span> ser\u00e1 <\/span><\/span>efetiva como germicida.<\/span><\/span><\/span> <\/span><\/span><\/span><\/p>\n

Est\u00e1<\/b><\/span><\/span><\/span> demo<\/b><\/span><\/span>n<\/b><\/span><\/span><\/span>strad<\/b><\/span><\/span><\/span>a<\/b><\/span><\/span><\/span> <\/b>a<\/b><\/span><\/span><\/span> <\/b>sua efetividade<\/b><\/span><\/span><\/span>? <\/b><\/span><\/span><\/span>Para cada tipo de microorganismo \u00e9<\/span><\/span><\/span> precisa<\/span><\/span><\/span> u<\/span><\/span>ma dose diferente para ser destruido. Esta dose<\/span><\/span><\/span> depende da potencia, distancia e<\/b><\/span><\/span><\/span> tempo<\/b><\/span><\/span><\/span>. Existe<\/span><\/span>m programas que calculam a dose<\/span><\/span><\/span> nece<\/span><\/span><\/span>ss\u00e1ria em cada caso. N\u00e3o se disp\u00f5e ainda<\/span><\/span><\/span> da<\/span><\/span>dos para a<\/span><\/span><\/span> Covid-19 <\/span><\/span><\/span>mas sim para alguns<\/span><\/span><\/span> v<\/span><\/span>\u00edr<\/span><\/span><\/span>us s<\/span><\/span><\/span>emelhantes<\/span><\/span><\/span> como <\/span><\/span><\/span>o v\u00edrus <\/span><\/span><\/span>d<\/span><\/span>a<\/span><\/span><\/span> gripe, bacteri<\/span><\/span><\/span>\u00f3fagos, hepatit<\/span><\/span><\/span>e<\/span><\/span><\/span> e<\/span><\/span><\/span> p<\/span><\/span>\u00f3<\/span><\/span><\/span>lio que s<\/span><\/span><\/span>\u00e3o<\/span><\/span><\/span> mu<\/span><\/span>ito<\/span><\/span><\/span> sens<\/span><\/span><\/span>\u00edveis \u00e0<\/span><\/span><\/span> luz <\/span><\/span><\/span>UV-C<\/b><\/span><\/span><\/span>. O<\/span><\/span>utros como o<\/span><\/span><\/span> mosaico d<\/span><\/span><\/span>o<\/span><\/span><\/span> tabaco s<\/span><\/span><\/span>\u00e3o<\/span><\/span><\/span> mu<\/span><\/span>ito resistentes e<\/span><\/span><\/span> precisam doses<\/span><\/span><\/span> mu<\/span><\/span>ito altas, mas trata-se<\/span><\/span><\/span> de v<\/span><\/span><\/span>\u00ed<\/span><\/span><\/span>rus mu<\/span><\/span><\/span>ito diferentes.<\/span><\/span><\/span> <\/span><\/span><\/span><\/p>\n

S\u00e3o perigosos para as pesso<\/b><\/span><\/span><\/span>as? <\/b><\/span><\/span><\/span>S<\/span><\/span>e<\/span><\/span><\/span> estamos <\/span><\/span><\/span>a usar dose<\/span><\/span><\/span>s para eliminar g<\/span><\/span><\/span>e<\/span><\/span><\/span>rmes, virus <\/span><\/span><\/span>e<\/span><\/span><\/span> bact<\/span><\/span><\/span>\u00e9rias, vamos ter tamb\u00e9m efeitos adversos sobre qualquer tecido<\/span><\/span><\/span> vivo. <\/span><\/span><\/span>NUNCA dev<\/b><\/span><\/span><\/span>e<\/b><\/span><\/span>-se<\/b><\/span><\/span><\/span> <\/b>olhar de<\/b><\/span><\/span><\/span> <\/b>olho nu<\/b><\/span><\/span><\/span> a u<\/b><\/span><\/span><\/span>m gerador de UV-C <\/b><\/span><\/span><\/span>de <\/span><\/span>qualquer tipolog\u00eda<\/span><\/span><\/span>. Tam<\/span><\/span>b\u00e9m n\u00e3o aplicar sobre a pele.<\/span><\/span><\/span> <\/span><\/span><\/span><\/p>\n

C<\/b><\/span><\/span>\u00f3<\/b><\/span><\/span><\/span>mo <\/b><\/span><\/span><\/span>nos podemos proteger dos UV-C? <\/b><\/span><\/span><\/span>A l<\/span><\/span><\/span>uz <\/span><\/span>UV-C <\/b><\/span><\/span><\/span>de<\/span><\/span>ve de estar confinada dentro dos <\/span><\/span><\/span>equip<\/span><\/span><\/span>amentos que a ge<\/span><\/span><\/span>ra<\/span><\/span>m<\/span><\/span><\/span> e ser ativados<\/span><\/span><\/span> s<\/span><\/span>\u00f3<\/span><\/span><\/span> q<\/span><\/span><\/span>uando n<\/span><\/span><\/span>\u00e3o<\/span><\/span><\/span> h\u00e1 presen\u00e7a <\/span><\/span><\/span>de pe<\/span><\/span>ssoas. A<\/span><\/span><\/span> b<\/span><\/span>oa<\/span><\/span><\/span> not<\/span><\/span><\/span>\u00ed<\/span><\/span><\/span>cia <\/span><\/span><\/span>\u00e9<\/span><\/span><\/span> que <\/span><\/span><\/span>os UV-C aten<\/b><\/span><\/span><\/span>uam-se<\/b><\/span><\/span><\/span> f<\/b><\/span><\/span>a<\/b><\/span><\/span><\/span>cilmen<\/b><\/span><\/span><\/span>te<\/b><\/span><\/span><\/span> quando<\/span><\/span><\/span> t<\/span><\/span>\u00eam<\/span><\/span><\/span> de atraves<\/span><\/span><\/span>sar <\/span><\/span><\/span>qualquer material que no sea quartzo<\/span><\/span><\/span>. U<\/span><\/span>m<\/span><\/span><\/span>a simple<\/span><\/span><\/span>s<\/span><\/span><\/span> l<\/span><\/span>\u00e2<\/span><\/span><\/span>mina de pl<\/span><\/span><\/span>\u00e1<\/span><\/span>stico transparente os bloquei<\/span><\/span><\/span>a <\/span><\/span>e atenu<\/span><\/span><\/span>a <\/span><\/span>enormemente.<\/span><\/span><\/span> <\/span><\/span><\/span><\/p>\n

LEITOR BIOMETRICO: A SOLU<\/span><\/span>\u00c7\u00c3O <\/span><\/span><\/span>DE VIGILANT PARA DESINFETAR <\/span><\/span><\/span>O<\/span><\/span><\/span> SENSOR BIOMETRICO DE <\/span><\/span><\/span>IMPRES\u00c3O DIGITAL<\/span><\/span><\/span> <\/span><\/span><\/span><\/p>\n

O objetivo era esterilizar a superf\u00cd<\/span><\/span><\/span>cie d<\/span><\/span>o sensor de impress\u00e3o digital no rel\u00f3gios de ponto<\/a><\/span><\/span><\/span>. <\/span><\/span>O<\/span><\/span><\/span> sistema deb<\/span><\/span><\/span>\u00ed<\/span><\/span>a funcionar de forma<\/span><\/span><\/span> autom<\/span><\/span><\/span>\u00e1<\/span><\/span>tica aplicando uma dose<\/span><\/span><\/span> ade<\/span><\/span><\/span>q<\/span><\/span><\/span>uada de UV-C sobre <\/span><\/span><\/span>o<\/span><\/span><\/span> sensor <\/span><\/span><\/span>ap\u00f3s de cada uso. I<\/span><\/span><\/span>sto implica u<\/span><\/span><\/span>m<\/span><\/span><\/span> retardo <\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

En<\/span><\/span><\/span>tre <\/span><\/span><\/span>cada <\/span><\/span><\/span>usu<\/span><\/span>\u00e1rio t<\/span><\/span><\/span>emos t<\/span><\/span><\/span>ido<\/span><\/span><\/span> de utilizar um gerador UV-C tipo LED mas com pot\u00eancia <\/span><\/span><\/span>suficiente para que <\/span><\/span><\/span>o tempo de aplica\u00e7\u00e3o da dose<\/span><\/span><\/span> for o mais<\/span><\/span><\/span> c<\/span><\/span>u<\/span><\/span><\/span>rto pos<\/span><\/span><\/span>s\u00edvel. Para tal<\/span><\/span><\/span> temos utilizado um<\/span><\/span><\/span> dispositivo da casa Luminux co<\/span><\/span><\/span>m uma lente de q<\/span><\/span><\/span>uar<\/span><\/span>t<\/span><\/span><\/span>zo de 60o que proporciona u<\/span><\/span><\/span>m<\/span><\/span><\/span> flu<\/span><\/span>xo de radia\u00e7\u00e3o de 40,81 mW <\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

Temos de<\/span><\/span><\/span>se<\/span><\/span>nh<\/span><\/span><\/span>ado <\/span><\/span><\/span>tamb\u00e9m <\/span><\/span><\/span>u<\/span><\/span>m<\/span><\/span><\/span>a ca<\/span><\/span><\/span>ixa<\/span><\/span><\/span> que c<\/span><\/span><\/span>o<\/span><\/span><\/span>bre <\/span><\/span><\/span>o sensor de impress\u00e3o digital e onde<\/span><\/span><\/span> o<\/span><\/span><\/span> LED UV-C <\/span><\/span><\/span>fica instalado na parte superior, iluminando toda a superf\u00ed<\/span><\/span><\/span>cie d<\/span><\/span>o sensor a 24mm de dist\u00e2ncia. Usa-se <\/span><\/span><\/span>u<\/span><\/span>m<\/span><\/span><\/span> circuito impres<\/span><\/span><\/span>s<\/span><\/span><\/span>o co<\/span><\/span><\/span>m substrato de aluminio para dissipar a calor do<\/span><\/span><\/span> LED<\/span><\/span><\/span>.<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

\"leitor<\/p>\n

Um sensor capacitivo detecta a presen\u00e7a do dedo e s\u00f3 ativa o gerador de UV-C quando o dedo \u00e9 removido para fornecer seguran\u00e7a m\u00e1xima aos usu\u00e1rios.<\/span><\/p>\n