Smart Saline Level Monitoring System using Liquid Level Switch Contactless Sensor, NodeMCU and MQTT-S

Advancement in the healthcare system is rapidly increasing in recent years due to the application of engineering principles and design concepts to medicine and biology. One of the most commonly used intravenous (IV) therapies, saline, plays a significant role in the treatment of disease patients. Saline plays a major role in replenishing lost fluid, extracellular fluid replacement like dehydration, hypovolemia, haemorrhage, sepsis. Generally, Surveillance of saline bottle levels is monitored by nurses and caretakers. There is an endless need to check the saline level after a particular time. If you don't, there's a good risk your blood may flow back into the saline bottle. Most of the time, due to negligence or an unusual scenario, the proper planning of removing the needle from the patient's vein is forgotten, resulting in a significant loss and maybe death. To avoid such accidents taking place due to the negligence of caretakers, it is proposed that the cost-effective smart saline level monitor which may be a reliable, user friendly and price effective system for saline level monitoring. This technique is built by employing a liquid level switch contactless sensor which is an ultra-low power and low cost sensor and NodeMCU ESP8266 Wi-Fi module microcontroller. The sensor's output is a specific voltage based on the presence of saline. The ESP8266 Wi-Fi module integrated on the NodeMCU microcontroller creates and broadcasts a specific message based on the voltage received from the sensor. MQTT-S is used to distribute/buy in convention, which works over TCP, to convey and introduce the communications to the end customer gadgets of endorsers such as specialists, medical attendants, or guardians. This proposed watching system ensures that messages are sent to supporters in a reliable manner, which is critical in medical treatment.