Design And Implementation Of Environment And Status Monitoring System Of Medical Equipment Based On Internet Of Things

In the course of using medical equipment,especially large-scale medical equipment,the amount of capital invested,the technical threshold for use,the cost of maintenance and support,and the technical barriers of the original factory are not easy to break.Therefore,ensuring the smooth operation of medical equipment is the key task of clinical engineers in medical institutions.In general,large-scale medical equipment has clear requirements for the operating environment,such as temperature and humidity must be maintained within an appropriate range.In addition,in the actual work,due to power outages or air-conditioning system failures,such as causing environmental temperature and humidity to lose control,resulting in large-scale medical equipment failures from time to time,even causing damage to the equipment's core components.At present,the environmental monitoring of the equipment room mainly depends on the on-site observation and inspection of clinical users and clinical engineers.This method has great limitations.If the environmental conditions are out of control during the night and holidays during the non-working period,the first time can not be discovered.It is very easy to cause equipment failure and affect the patient's diagnosis and treatment order.This paper designs and builds a monitoring system of environment temperature and humidity and power supply for large-scale medical equipment based on concepts and technologies related to the Internet of Things(IOT).To determine the range and accuracy of temperature and humidity sensors required for the monitoring system,and to sample and monitor the AC voltage of 220V/50 Hz in the environment of the equipment room.From the perspective of minimizing peripheral components and reducing hardware costs,the hardware of the entire system is divided into modules: the master module chip selects ESP8266 with integrated WiFi functions and processors with three wireless network operating modes.The master module receives the sensor data and transmits the data through the lightweight MQTT protocol to the open Internet of Things platform by connecting the in-hospital WiFi network arranged in the large-scale medical equipment room;The system temperature and humidity sensor chooses the AM2302 with a single bus communication.The design of the single bus makes it only need to occupy an I/O port of the main control chip to complete the temperature and humidity data transmission;In the design of AC voltage monitoring,the current Transformer is used to convert AC high voltage into the DC low voltage applicable to the ADC port of the main control chip.The main control chip is used for sampling and modulus conversion to achieve the accurate measurement of AC voltage in the equipment room.;In order to facilitate the visual view of the operating state of the system,equipment configuration and debugging,the 0.96 inch organic light-emitting diode display with high resolution and delicate display effect is packaged into 4 tube feet to display the operating state of the monitoring system.You can watch real-time temperature and humidity data,AC voltage values,and WiFi signal strength and so on.The software design of this monitoring system,in addition to the acquisition,processing and display of multiple sensor data of the monitoring module's own system,focuses on the realization of the use of the MQTT protocol and the Internet of Things cloud platform to establish connections to transmit data.On the basis of this,the rich functions of the Internet of Things platform are used to manage the data,design and apply the display template,and visualize the stored data;By set up alarm triggers on cloud platforms,set alarm values,push alarm alert messages through platforms,and establish a cloud platform monitoring system for data collection,transmission,and storage of medical equipment environmental conditions based on Internet of Things technology.To realize the 24-hour continuous monitoring of the operating environment of the equipment room.In addition to the method of directly accessing the designated website to view the monitoring data on the connected computer,in order to facilitate operators and in-charge engineers to view the relevant data in real time,design a APP which can be used on the smart phone,through the HTTP protocol to call the data information of the Internet of Things cloud platform in order to realize the functions of real-time data viewing and reviewing historical data on the smart phone which reduce the workload of on-site inspections by clinical users and engineers,improve the efficiency of inspections,and eliminate the problem of uncontrolled environmental conditions in large-scale medical equipment,which is helpful to ensure the stability of the operating environment of large large-scale medical equipment.