{"id":228,"date":"2023-10-30T12:59:06","date_gmt":"2023-10-30T12:59:06","guid":{"rendered":"https:\/\/smartcampus.maua.br\/?page_id=228"},"modified":"2023-10-30T14:59:07","modified_gmt":"2023-10-30T14:59:07","slug":"elementor-228","status":"publish","type":"page","link":"https:\/\/smartcampus.maua.br\/?page_id=228","title":{"rendered":"Documenta\u00e7\u00e3oEndNodes"},"content":{"rendered":"\t\t
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DOCUMENTA\u00c7\u00c3O DE END-NODES\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Esquem\u00e1tico de software de end-nodes<\/h3>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\u00a0Esquem\u00e1tico de hardware de end-nodes<\/h3>
\u00a0<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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A seguir, para os in\u00fameros\u00a0end-nodes<\/em>\u00a0que caracterizam os sensores do\u00a0Smart Campus,<\/em>\u00a0foram desenhados esquem\u00e1ticos de liga\u00e7\u00f5es simplificados das conex\u00f5es referentes aos\u00a0hardwares<\/em>\u00a0 dispon\u00edveis e necess\u00e1rios para cada sensor de aplica\u00e7\u00e3o. Tendo em vista que cada sensor acoplado ao end-node caracteriza ao menos uma aplica\u00e7\u00e3o, ser\u00e1 abordado em um primeiro momento deste documento, cada sensor separadamente. Para as aplica\u00e7\u00f5es compostas de um ou mais sensor ser\u00e1 abordado mais a frente.<\/p>

Monitoramento de temperatura e umidade<\/h4>

O\u00a0end-node<\/em>\u00a0que caracteriza o \u201cMonitoramento de Temperatura e Umidade\u201d \u00e9 realizado atrav\u00e9s de dois diferentes sensores indicados: o sensor\u00a0DHT11\u00a0<\/em>(Figura 1) e o sensor\u00a0DHT22\u00a0<\/em>(Figura 2). Como caracter\u00edsticas padr\u00f5es e para entender a diferen\u00e7a entre os sensores para cada aplica\u00e7\u00e3o, \u00e9 importante observar a tabela a seguir:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Figura 1 \u2013 Sensor de Temperatura e Umidade DHT11<\/p>

\u00a0<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Figura 2 \u2013 Sensor de Temperatura e Umidade DHT22<\/p>

\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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\u00a0<\/th>DHT11<\/th>DHT22<\/th><\/tr><\/thead>
Tens\u00e3o de Alimenta\u00e7\u00e3o<\/td>3V3 – 5V<\/td>3V3 – 5V<\/td><\/tr>
Corrente M\u00e1xima<\/td>2,5mA<\/td>1,5mA<\/td><\/tr>
Faixa de Leitura (Umidade)<\/td>20% – 80%<\/td>0 – 100%<\/td><\/tr>
Precis\u00e3o (Umidade)<\/td>5%<\/td>2%<\/td><\/tr>
Faixa de Leitura (Temperatura)<\/td>0 – 50\u00b0C<\/td>-40\u00b0C – 120\u00b0C<\/td><\/tr>
Precis\u00e3o (Temperatura)<\/td>+-2\u00b0C<\/td>+. 0,5\u00b0C<\/td><\/tr>
Intervalo entre Medi\u00e7\u00f5es<\/td>1s<\/td>2s<\/td><\/tr><\/tbody><\/table>

Tabela 1 \u2013 Compara\u00e7\u00e3o de caracter\u00edsticas t\u00e9cnicas entre os sensores DHT11 e DHT22<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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De acordo com as caracter\u00edsticas de projeto, pode-se utilizar de um ou outro sensor. O esquem\u00e1tico de liga\u00e7\u00e3o \u00e9 o mesmo, visto que as pinagens serem tamb\u00e9m s\u00e3o as mesmas. Ambas as liga\u00e7\u00f5es est\u00e3o descritas a seguir. Deve-se observar :<\/p>

\u00a0<\/h6>
DHT11<\/strong><\/h6>

O sensor\u00a0DHT11<\/em>, conforme descrito nas caracter\u00edsticas acima, pode ser montado conforme a figura a seguir.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Figura 3 \u2013 End-node<\/em>\u00a0para medi\u00e7\u00e3o de temperatura e umidade DHT11<\/p>

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DHT22<\/strong><\/h6>

O sensor DHT22, conforme descrito nas caracter\u00edsticas acima, pode ser montado conforme a figura a seguir.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Figura a \u2013\u00a0End-node<\/em>\u00a0para medi\u00e7\u00e3o de temperatura e umidade DHT22<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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A caracteriza\u00e7\u00e3o do esquem\u00e1tico de liga\u00e7\u00e3o entre sensores e\u00a0end-node<\/em>\u00a0est\u00e1 descrita a seguir:<\/p>

  • Bateria<\/strong>
    • Positivo da bateria no conector BAT pino 1 do end-node<\/li>
    • Negativo da bateria no conector BAT pino 2 do end-node<\/li><\/ul><\/li>
    • DHT<\/strong>
      • Pino 1 do DHT no conector I\/Os pino 3V3 do\u00a0end-node<\/em><\/li>
      • Pino 2 do DHT no conector I\/Os pino RB13 do\u00a0end-node<\/em><\/li>
      • Pino 4 do DHT no conector I\/Os pino GND do\u00a0end-node<\/em><\/li><\/ul><\/li>
      • Resistor\u00a0pull-up<\/em><\/strong>
        • Pino 1 do resistor de 4k7 no conector I\/Os pino 3V3 do\u00a0end-node<\/em><\/li>
        • Pino 2 do resistor de 4k7 no conector I\/Os pino RB13 do\u00a0end-node<\/em><\/li><\/ul><\/li>
        • Jumper<\/strong><\/em>
          • Pino 1 do\u00a0jumper<\/em>\u00a0no conector I\/Os pino GNDC do\u00a0end-node<\/em><\/li>
          • Pino 2 do\u00a0jumper<\/em>\u00a0no coletor do transistor do\u00a0end-node\u00a0<\/em>(vide Figura)<\/li><\/ul><\/li><\/ul>

            Sensor de Dist\u00e2ncia (Ultrassom)<\/h4>

            O end-node que caracteriza a medi\u00e7\u00e3o de dist\u00e2ncia possui um sensor de dist\u00e2ncia por ultrassom acoplado \u00e0 placa.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            Figura a \u2013\u00a0End-node<\/em>\u00a0para medi\u00e7\u00e3o de dist\u00e2ncia por sensor de ultrassom<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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            A caracteriza\u00e7\u00e3o do esquem\u00e1tico de liga\u00e7\u00e3o evidenciado na Figura abaixo pode ser caracterizado observando-se os par\u00e2metros a seguir:<\/p>

            • Bateria<\/strong>
              • Positivo da bateria no conector BAT pino 1 do end-node<\/li>
              • Negativo da bateria no conector BAT pino 2 do end-node<\/li><\/ul><\/li>
              • Ultrassom<\/strong>
                • Pino 3 do ultrassom no conector I\/Os pino RB12 do\u00a0end-node<\/em><\/li>
                • Pino 5 do ultrassom no conector I\/Os pino RB14 do\u00a0end-node<\/em><\/li>
                • Pino 6 do ultrassom no conector I\/Os pino 3V3 do\u00a0end-node<\/em><\/li>
                • Pino 7 do ultrassom no conector I\/Os pino GNDC do\u00a0end-node<\/em><\/li><\/ul><\/li>
                • Capacitor eletrol\u00edtico<\/strong>
                  • Pino 1 do capacitor eletrol\u00edtico de bbF no conector I\/Os pino 3V3 do\u00a0end-node<\/em><\/li>
                  • Pino 2 do capacitor eletrol\u00edtico de bbF no conector I\/Os pino GND do\u00a0end-node<\/em><\/li><\/ul><\/li><\/ul>

                    Monitoramento de Luminosidade<\/h4>

                    Para monitoramento de luminosidade, est\u00e1 acoplado junto ao end-node um sensor de luminosidade\u00a0LDR<\/em>\u00a0conforme a Figura abaixo.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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                    Monitoramento de Luminosidade<\/span><\/p>

                    Para monitoramento de luminosidade, est\u00e1 acoplado junto ao end-node um sensor de luminosidade\u00a0LDR<\/em>\u00a0conforme a Figura abaixo.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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                    Figura a \u2013\u00a0End-node<\/em>\u00a0para medi\u00e7\u00e3o luminosidade atrav\u00e9s de\u00a0LDR<\/em><\/p>

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                    A caracteriza\u00e7\u00e3o do esquem\u00e1tico de liga\u00e7\u00e3o entre sensores e end-node est\u00e1 descrita a seguir:<\/p>

                    • Bateria<\/strong>
                      • Positivo da bateria no conector BAT pino 1 do\u00a0end-node<\/em><\/li>
                      • Negativo da bateria no conector BAT pino 2 do\u00a0end-node<\/em><\/li><\/ul><\/li>
                      • Sensor NTC-10k<\/strong>
                        • Pino 1 do\u00a0<\/strong>NTC-10k no conector IO\/s pino RB12\u00a0do\u00a0end-node<\/em><\/li>
                        • Pino 2 do\u00a0NTC-10k\u00a0no conector IO\/s pino GNDC do\u00a0end-node<\/em><\/li><\/ul><\/li>
                        • LDR<\/strong>
                          • Pino 1 do LDR no conector IO\/s pino RB13 do\u00a0end-node<\/em><\/li>
                          • Pino 2 do LDR no conector IO\/s pino GNDC do\u00a0end-node<\/em><\/li><\/ul><\/li>
                          • Resistores de<\/strong>\u00a0pull-up<\/strong><\/em>
                            • Pull-up 1<\/i>
                              • Pino 1 do resistor de 10k no conector I\/Os pino 3V3 do\u00a0end-node<\/em><\/li>
                              • Pino 2 do resistor de 10k no conector I\/Os pino\u00a0RB12 do\u00a0end-node<\/em><\/li><\/ul><\/li>
                              • Pull-up 2<\/em>
                                • Pino 1 do resistor de 10k no conector I\/Os pino 3V3 do\u00a0end-node<\/em><\/li>
                                • Pino 2 do resistor de 10k no conector I\/Os pino\u00a0RB13 do\u00a0end-node<\/em><\/li><\/ul><\/li><\/ul><\/li>
                                • Programa\u00e7\u00e3o MPLAB<\/strong>
                                  • Habibilitar\u00a0ENVIA_AN12<\/strong>\u00a0e\u00a0ENVIA_AN13<\/strong>, em app.h<\/li><\/ul><\/li><\/ul>

                                    Detec\u00e7\u00e3o de pulso (reed-swicth\/Push button<\/em>)<\/h4>

                                    Dispositivos que acionam uma interrup\u00e7\u00e3o no software embarcado do end-node possuem caracter\u00edtcas semelhantes. No caso da Figura abaixo est\u00e1 caracterizado um reed-swith, que se trata de um push button acionado com a aproxima\u00e7\u00e3o de um campo magn\u00e9tico. No caso do push button este acionamento \u00e9 de car\u00e1ter mec\u00e2nico.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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                                    Figura a \u2013\u00a0End-node<\/em>\u00a0para medi\u00e7\u00e3o vaz\u00e3o por\u00a0reed-switch<\/em>\u00a0(por exemplo, hidr\u00f4metros)<\/p>

                                    \u00a0<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                                    A caracteriza\u00e7\u00e3o do esquem\u00e1tico de liga\u00e7\u00e3o entre sensore e end-node est\u00e1 descrita a seguir:<\/p>

                                    • Bateria<\/strong>
                                      • Positivo da bateria no conector BAT pino 1 do\u00a0end-node<\/em><\/li>
                                      • Negativo da bateria no conector BAT pino 2 do\u00a0end-node<\/em><\/li><\/ul><\/li>
                                      • Reed Switch \/ push buttonPush Button<\/strong>
                                        • Pino 1 do push button no conector I\/Os pino INT0 do\u00a0end-node<\/em><\/li>
                                        • Pino 2 do push button no conector I\/Os pino GNDC do\u00a0end-node<\/em><\/li><\/ul><\/li><\/ul>

                                          Medi\u00e7\u00e3o de Pot\u00eancia El\u00e9trica Consumida<\/h4>

                                          A determina\u00e7\u00e3o da corrente el\u00e9trica consumida por um dispositivo \u00e9 mensurada atrav\u00e9s de um sensor de corrente ACS712 e esquematizado conforme a Figura abaixo.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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                                          Figura a \u2013\u00a0End-node<\/em>\u00a0para medi\u00e7\u00e3o corrente el\u00e9trica consumida.<\/p>

                                          \u00a0<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                                          A caracteriza\u00e7\u00e3o do esquem\u00e1tico de liga\u00e7\u00e3o entre sensore e end-node est\u00e1 descrita a seguir:<\/p>

                                          • Bateria<\/strong>
                                            • Positivo da bateria no conector BAT pino 1 do\u00a0end-node<\/em><\/li>
                                            • Negativo da bateria no conector BAT pino 2 do\u00a0end-node<\/em><\/li><\/ul><\/li>
                                            • ACS712<\/strong>
                                              • Pino GND do ACS712 no conector IO\/s pino GNDC do\u00a0end-node<\/em><\/li>
                                              • Pino OUT do ACS712 no conector IO\/s pino RB12 do\u00a0end-node<\/em><\/li>
                                              • Pino VCC do ACS712 no conector IO\/s pino 3V3 do\u00a0end-node<\/em><\/li><\/ul><\/li>
                                              • Programa\u00e7\u00e3o MPLAB<\/strong>
                                                • Descomentar a linha 58 do arquivo\u00a0app.h<\/em><\/strong>:<\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                  \n\t\t\t\t
                                                  \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                  \n\t\t\t\t
                                                  \n\t\t\t\t\t\t\t\t\t
                                                  • Programa\u00e7\u00e3o Node-RED<\/strong><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                    \n\t\t\t\t
                                                    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                    \n\t\t\t\t
                                                    \n\t\t\t\t\t\t\t\t\t

                                                    Fun\u00e7\u00e3o\u00a0<\/b><\/span>Parse MQTT json.data<\/b><\/span>:
                                                    <\/b><\/span>msg.payload = msg.payload.data;
                                                    <\/span><\/code>return msg;<\/span><\/code><\/p>

                                                    Decode:
                                                    <\/b><\/span>Base64<\/span><\/code><\/p>

                                                    Encode:
                                                    <\/b><\/span>Hex<\/span><\/code><\/p>

                                                    Fun\u00e7\u00e3o Calcular Corrente:
                                                    <\/b><\/span>msg.payload = (parseInt(msg.payload.substr(2,4),16)\/65139*3.3 - 3.3\/2)\/66;
                                                    <\/span>return msg;<\/span><\/code><\/p>

                                                    Fun\u00e7\u00e3o Calcular Bateria:
                                                    <\/b><\/span>msg.payload = parseInt(msg.payload.substr(8,4),16)\/1000;
                                                    <\/span>return msg;<\/span><\/code><\/p>

                                                    Fun\u00e7\u00e3o Contagem Regressiva:
                                                    <\/b><\/span>var now = new Date();
                                                    <\/span>var time_now = now.getTime();
                                                    <\/span>if (typeof last_broker_time === 'undefined'){
                                                    <\/span>last_broker_time = time_now;
                                                    <\/span>}
                                                    <\/span>if (msg.payload){
                                                    <\/span>last_broker_time = time_now;
                                                    <\/span>}
                                                    <\/span>var difference_between_times = parseInt(((time_now - last_broker_time)\/60000).toFixed(0),10);
                                                    <\/span>msg.payload = difference_between_times;
                                                    <\/span>return msg;<\/span><\/code><\/p>

                                                    Tag<\/em>\u00a0de identifica\u00e7\u00e3o por\u00a0RFID<\/em><\/h4>

                                                    O\u00a0end-node<\/em>\u00a0que caracteriza o \u201cTag<\/em>\u00a0de Identifica\u00e7\u00e3o por\u00a0RFID<\/em>\u201d \u00e9 realizado atrav\u00e9s do sensor\u00a0RDM630 (Figura x). Este sensor faz a leitura de tags RFID atrav\u00e9s de uma antena (125kHz) acoplada a ele que se comunica com o end-node via UART.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                                                    \n\t\t\t\t
                                                    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                    \n\t\t\t\t
                                                    \n\t\t\t\t\t\t\t\t\t

                                                    Figura a \u2013\u00a0End-node<\/em>\u00a0para controle por RFID<\/p>

                                                    \u00a0<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                    \n\t\t\t\t
                                                    \n\t\t\t\t\t\t\t\t\t

                                                    A caracteriza\u00e7\u00e3o do esquem\u00e1tico de liga\u00e7\u00e3o entre sensore e end-node est\u00e1 descrita a seguir:<\/p>

                                                    • Bateria<\/strong>
                                                      • Positivo da bateria no conector BAT pino 1 do\u00a0end-node<\/em><\/li>
                                                      • Negativo da bateria no conector BAT pino 2 do\u00a0end-node<\/em><\/li><\/ul><\/li>
                                                      • RMD6300<\/strong>
                                                        • Alimenta\u00e7\u00e3o 3v3 do RMD6300 no conector I\/Os pino 3v3 do\u00a0end-node<\/em><\/li>
                                                        • Pino 1 conector de 3 pinos do RMD6300 no conector I\/Os pino INT0 do\u00a0end-node<\/em><\/li>
                                                        • Pino 3 conector de 3 pinos do RMD6300 no conector I\/Os pino GNDC do\u00a0end-node<\/em><\/li>
                                                        • Pino 1 conector de 2 pinos do RMD6300 na Antena 1<\/li>
                                                        • Pino 2 conector de 2 pinos do RMD6300 na Antena 2<\/li><\/ul><\/li><\/ul>
                                                          TUTORIAL UTILIZA\u00c7\u00c3O M\u00d3DULO LEITOR RFID 125KHZ MODELO RDM6300<\/strong><\/h5>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                          \n\t\t\t\t
                                                          \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                          \n\t\t\t\t
                                                          \n\t\t\t\t\t\t\t\t\t

                                                          Caracter\u00edsticas:<\/strong><\/p>

                                                          • Frequ\u00eancia: 125Khz<\/li>
                                                          • Velocidade de comunica\u00e7\u00e3o: 9600 baud TTL formato RS232<\/li>
                                                          • Tens\u00e3o: 5VCC +\/-5%<\/li>
                                                          • Corrente: 50mA<\/li>
                                                          • Alcance de leitura: At\u00e9 150mm (depende do cart\u00e3o\/chaveiro\/etiqueta)<\/li>
                                                          • Tempo de decodifica\u00e7\u00e3o: 100mS<\/li>
                                                          • Temperatura de trabalho: -10\u00b0C ~ +70\u00baC<\/li>
                                                          • M\u00e1xima umidade relativa: 0 ~ 95%<\/li>
                                                          • Dimens\u00f5es: 38.5mm x 19mm x 9mm
                                                            Comunica\u00e7\u00e3o<\/li>
                                                          • UART \u00e0 9600 baudrate<\/li>
                                                          • 8bit, 1 stop bit, e sem bit de verifica\u00e7\u00e3o<\/li><\/ul>

                                                            Diagrama de liga\u00e7\u00e3o:<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                                                            \n\t\t\t\t
                                                            \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                            \n\t\t\t\t
                                                            \n\t\t\t\t\t\t\t\t\t
                                                            • P1<\/strong>
                                                              • Pino 1: Tx<\/li>
                                                              • Pino 2: Rx<\/li>
                                                              • Pino 3: \u2014<\/li>
                                                              • Pino 4: GND<\/li>
                                                              • Pino 5: +5V(DC)<\/li><\/ul><\/li>
                                                              • P2
                                                                • Pino 1: Ant 1<\/li>
                                                                • Pino 2: Ant 2<\/li><\/ul><\/li>
                                                                • P3
                                                                  • Pino 1: LED<\/li>
                                                                  • Pino 2: +5v (DC)<\/li>
                                                                  • Pino 3: GND<\/li><\/ul><\/li><\/ul>

                                                                    A liga\u00e7\u00e3o de VCC e GND pode ser feita em qualquer um dos terminais ou em ambos. P3 PIN1 LED \u00e9 conectado no \u00e2nodo do LED.<\/p>

                                                                    Identificando o valor do cart\u00e3o:<\/strong><\/p>

                                                                    O cart\u00e3o com padr\u00e3o EM4100, possui um n\u00famero \u00fanico, conforme imagem:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                                                                    \n\t\t\t\t
                                                                    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                                    \n\t\t\t\t
                                                                    \n\t\t\t\t\t\t\t\t\t

                                                                    Quando aproximado o cart\u00e3o na antena, o m\u00f3dulo envia uma mensagem serial RS232 TTL em ASCII, dessa maneira:<\/p>

                                                                    \u00a0<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                                    \n\t\t\t\t
                                                                    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                                    \n\t\t\t\t
                                                                    \n\t\t\t\t\t\t\t\t\t

                                                                    \u00a0ASCII:<\/strong>
                                                                    41008B30FC06 41008B30FC06 41008B30FC06 41008B30FC06<\/code><\/p>

                                                                    Hexa:<\/strong>
                                                                    02 34 31 30 30 38 42 33 30 46 43 30 36 03 02 34 31 30 30 38 42 33 30 46 43 30 36 03 02 34 31 30 30 38 42 33 30 46 43 30 36 03 02 34 31 30 30 38 42 33 30 46 43 30 36 03<\/code><\/p>

                                                                    O valor do cart\u00e3o no exemplo \u00e9:\u00a041008B30FC<\/code>\u00a0em hexadecimal\u00a034 31 30 30 38 42 33 30 46 43 \u00a0<\/code><\/p>

                                                                    Os \u00faltimos 2 bytes da palavra 06 em ASCII e\u00a030 36<\/code>\u00a0e hexacedimal, \u00e9 referente ao valor do checksum. O c\u00e1lculo deste valor \u00e9 feito da seguinte forma:<\/p>

                                                                    card number:<\/strong>\u00a062E3086CED<\/code><\/p>

                                                                    <\/code>Converte-se o valor do cart\u00e3o para hexadecimal,<\/p>

                                                                    36H\u300132H\u300145H\u300133H\u300130H\u300138H\u300136H\u300143H\u300145H\u300144H<\/code><\/p>

                                                                    E ent\u00e3o realiza-se opera\u00e7\u00e3o de Ou Exclusivo<\/p>

                                                                    CHECKSUM:<\/strong><\/em>\u00a0(62H) XOR (E3H) XOR (08H) XOR (6CH) XOR (EDH) = 08H<\/code><\/p>

                                                                    Opera\u00e7\u00e3o pode ser feita com uma tabela em Excel:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                                                                    \n\t\t\t\t
                                                                    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                                    \n\t\t\t\t
                                                                    \n\t\t\t\t\t\t\t\t\t

                                                                    =DECAHEX((BITXOR(HEXADEC(D8);HEXADEC(D9)));2)<\/code><\/p>

                                                                    Medi\u00e7\u00e3o de Combust\u00edvel Adulterado<\/h4>

                                                                    A medi\u00e7\u00e3o de combust\u00edvel adulterado \u00e9 realizada atrav\u00e9s de um sensor de condutividade, um sensor de temperatura um\u00a0push button<\/em>\u00a0para a medi\u00e7\u00e3o e transmiss\u00e3o dos dados e um display para exibi\u00e7\u00e3o dos dados medidos online conforme descritos na Figura a seguir.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                                                                    \n\t\t\t\t
                                                                    \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                                    \n\t\t\t\t
                                                                    \n\t\t\t\t\t\t\t\t\t

                                                                    Figura a \u2013\u00a0End-node<\/em>\u00a0para medi\u00e7\u00e3o de combust\u00edvel adulerado<\/p>

                                                                    \u00a0<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                                    \n\t\t\t\t
                                                                    \n\t\t\t\t\t\t\t\t\t

                                                                    A caracteriza\u00e7\u00e3o do esquem\u00e1tico de liga\u00e7\u00e3o entre sensores e\u00a0end-nodes<\/em>\u00a0est\u00e1 descrita a seguir:<\/p>

                                                                    • Bateria<\/strong>
                                                                      • Positivo da bateria no conector BAT pino 1 do\u00a0end-node<\/em><\/li>
                                                                      • Negativo da bateria no conector BAT pino 2 do\u00a0end-node<\/em><\/li><\/ul><\/li>
                                                                      • Condutividade<\/strong>
                                                                        • Pino 1 do sensor de condutividade no conector I\/Os pino RB13 do\u00a0end-node<\/em><\/li>
                                                                        • Pino 2 do sensor de condutividade no conector I\/Os pino GNDC do\u00a0end-node<\/em><\/li><\/ul><\/li>
                                                                        • Temperatura<\/strong>
                                                                          • Pino 1 do sensor de temperatura no conector I\/Os pino RB14 do\u00a0end-node<\/em><\/li>
                                                                          • Pino 2 do sensor de temperatura no conector I\/Os pino GNDC do\u00a0end-node<\/em><\/li>
                                                                          • Resistor de\u00a0pull-up\u00a0<\/em><\/strong>
                                                                            • Pino 1 do resistor de 10K no conector I\/Os pino 3V3 do\u00a0end-node<\/em><\/li>
                                                                            • Pino 2 do resistor de 10K no conector I\/Os pino RB13 do\u00a0end-node<\/em><\/li><\/ul><\/li><\/ul><\/li>
                                                                            • Push Button<\/strong><\/em>
                                                                              • Pino 1 do\u00a0push button<\/em>\u00a0no conector\u00a0I\/Os<\/em>\u00a0pino INT0 do\u00a0end-node<\/em><\/li>
                                                                              • Pino 2 do\u00a0push<\/em>\u00a0button<\/em>\u00a0no conector\u00a0I\/Os<\/em>\u00a0pino GNDC do\u00a0end-node<\/em><\/li><\/ul><\/li>
                                                                              • Display oLED SPI<\/strong><\/em>
                                                                                • Pino 1 do\u00a0oLED SPI<\/em>\u00a0no conector I\/Os pino GNDC do\u00a0end-node<\/em><\/li>
                                                                                • Pino 2 do\u00a0oLED SPI<\/em>\u00a0no conector I\/Os pino 3V3 do\u00a0end-node<\/em><\/li>
                                                                                • Pino 3 do\u00a0oLED SPI<\/em>\u00a0no conector I\/Os pino SCL do\u00a0end-node<\/em><\/li>
                                                                                • Pino 4 do\u00a0oLED<\/em>\u00a0SPI<\/em>\u00a0no conector I\/Os pino SCA do\u00a0end-node<\/em><\/li>
                                                                                • Pino 5 do\u00a0oLED SPI<\/em>\u00a0no pino RESET do RN2903<\/li>
                                                                                • Pino 6 do\u00a0oLED<\/em>\u00a0SPI<\/em>\u00a0no conector I\/Os pino RB14 do\u00a0end-node<\/em><\/li>
                                                                                • Pino 7 do\u00a0oLED<\/em>\u00a0SPI<\/em>\u00a0no conector I\/Os pino GNDC do end-node<\/li><\/ul><\/li><\/ul>

                                                                                  Sensor de presen\u00e7a<\/h4>

                                                                                  O sensor de presen\u00e7a utiliza um dispositivo denominado\u00a0PIR \u2013 HC-SR501 e \u00e9 poss\u00edvel program\u00e1-lo para detec\u00e7\u00e3o de movimentos. Para o sensor de presen\u00e7a, na figura abaixo, tamb\u00e9m foi adicionado um sensor de temperatura e umidade j\u00e1 descritos acima.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

                                                                                  \n\t\t\t\t
                                                                                  \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                                                  \n\t\t\t\t
                                                                                  \n\t\t\t\t\t\t\t\t\t

                                                                                  End-node<\/em>\u00a0para medi\u00e7\u00e3o de sensor de presen\u00e7a<\/p>

                                                                                  \u00a0<\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                                                                                  \n\t\t\t\t
                                                                                  \n\t\t\t\t\t\t\t\t\t

                                                                                  A caracteriza\u00e7\u00e3o do esquem\u00e1tico de liga\u00e7\u00e3o entre sensore e end-node est\u00e1 descrita a seguir:<\/p>

                                                                                  • Bateria<\/strong>
                                                                                    • Positivo da bateria no conector BAT pino 1 do end-node<\/li>
                                                                                    • Negativo da bateria no conector BAT pino 2 do end-node<\/li><\/ul><\/li>
                                                                                    • LDR<\/strong>
                                                                                      • Pino 1 do LDR no conector IO\/s pino RB12 do\u00a0end-node<\/em><\/li>
                                                                                      • Pino 2 do LDR no conector IO\/s pino GNDC do\u00a0end-node<\/em><\/li><\/ul><\/li>
                                                                                      • DHT<\/strong>
                                                                                        • Pino 1 do DHT no conector I\/Os pino 3V3 do capacitor C9<\/li>
                                                                                        • Pino 2 do DHT no conector I\/Os pino RB13 do\u00a0end-node<\/em><\/li>
                                                                                        • Pino 4 do DHT no conector I\/Os pino GNDC do\u00a0end-node<\/em><\/li><\/ul><\/li>
                                                                                        • Resistores de<\/strong>\u00a0pull-up<\/strong><\/em>
                                                                                          • Pull-up 1<\/i>
                                                                                            • Pino 1 do resistor 1 de 4k7 no conector I\/Os pino 3V3 do\u00a0end-node<\/em><\/li>
                                                                                            • Pino 2 do resistor 1 de 4K7 no conector I\/Os pino\u00a0RB12 do\u00a0end-node<\/em><\/li><\/ul><\/li>
                                                                                            • Pull-up 2<\/em>
                                                                                              • Pino 1 do resistor 2 de 4K7 no conector I\/Os pino 3V3 do\u00a0end-node<\/em><\/li>
                                                                                              • Pino 2 do resistor 2 de 4k7 no conector I\/Os pino\u00a0RB13 do\u00a0end-node<\/em><\/li><\/ul><\/li><\/ul><\/li>
                                                                                              • PIR-HC-SR501<\/strong>
                                                                                                • Pino 1 do\u00a0PIR-HC-SR501 no\u00a0pino 3V3 do capacitor C9<\/li>
                                                                                                • Pino 2 do PIR-HC-SR501 no conector I\/Os pino INT0\u00a0do\u00a0end-node<\/em><\/li>
                                                                                                • Pino 3 do PIR-HC-SR501 no conector I\/Os pino GND do\u00a0end-node<\/em><\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

                                                                                                  DOCUMENTA\u00c7\u00c3O DE END-NODES Esquem\u00e1tico de software de end-nodes https:\/\/www.youtube.com\/watch?v=FKUjgYPIhpk \u00a0Esquem\u00e1tico de hardware de end-nodes \u00a0https:\/\/www.youtube.com\/watch?v=lrOOZjDGHYc A seguir, para os in\u00fameros\u00a0end-nodes\u00a0que caracterizam os sensores do\u00a0Smart Campus,\u00a0foram desenhados esquem\u00e1ticos de liga\u00e7\u00f5es simplificados das conex\u00f5es referentes aos\u00a0hardwares\u00a0 dispon\u00edveis e necess\u00e1rios para cada sensor de aplica\u00e7\u00e3o. Tendo em vista que cada sensor acoplado ao end-node caracteriza ao menos uma […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-228","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/smartcampus.maua.br\/index.php?rest_route=\/wp\/v2\/pages\/228","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smartcampus.maua.br\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/smartcampus.maua.br\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/smartcampus.maua.br\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/smartcampus.maua.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=228"}],"version-history":[{"count":11,"href":"https:\/\/smartcampus.maua.br\/index.php?rest_route=\/wp\/v2\/pages\/228\/revisions"}],"predecessor-version":[{"id":418,"href":"https:\/\/smartcampus.maua.br\/index.php?rest_route=\/wp\/v2\/pages\/228\/revisions\/418"}],"wp:attachment":[{"href":"https:\/\/smartcampus.maua.br\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}