Research Article
Enhancing Healthcare through Detection and Prevention of COVID-19 Using Internet of Things and Mobile Application
Algorithm 3
Work of an ultrasonic sensor.
| Step 1: start. | | Step 2: [check NodeMCU connection]. | | If(connected) { | | Calculate the distance. | | } else { | | NodeMCU connection failed. | | } | | Step 3: [calculating distance]. | | Get data from ultrasonic sensor. | | Step 4: check the data with applied conditions. | | Step 5: if (distance > normal) { | | Buzzer = ON. | | Red LED = ON. | | Notify the user and admin. | | } else { | | Green LED = ON. | | } | | Step 6: repeat steps 3 to 7. | | Step 7: end. |
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