Design And Implementation Of Personnel Information Perception System In Special Environment

At present,communication technology,sensor technology,etc.are constantly developing and progressing with the times,which also makes the personnel information perception system provide a lot of convenience for people's lives.However,in some special environments,such as rescue environments,battlefield environments,police missions,outdoor adventures,etc.,there are common features such as scattered personnel,large distances and insufficient signal stability,which lead to problems such as difficult information perception and limited communication.According to the actual situation of the author's work unit,this article analyzes the needs of the personnel information perception system in a special environment,and designs the overall design around four parts: terminal,gateway,server and data management,and conducts hardware and software debugging and testing.It is verified that a human information perception system in a special environment is realized,and a practical solution is provided for the effective perception and application of the information perception system in a special environment.The main work of this paper is as follows:1.The user terminal is designed,and a variety of information perception and data collection are completed: senses environmental information by GM-702 B CO gas sensor,SHT30 temperature and humidity sensor and CCS811 air quality;senses personnel physiological information by MKB0805 heart rate and blood pressure sensor;senses location information by L80-R GPS module;realizes interactive functions by buttons and motors;completed the circuit design and PCB board production of the terminal module and gateway module with STM32F103C8T6 as the core in the Altium Designer19 hardware development environment.2.The communication between the user terminal and the gateway module is realized by LoRa communication technology;the gateway module mainly integrates the LoRa communication module and 4G communication module,and the communication between the gateway module and the One NET cloud platform is realized by the 4G communication module Air724 UG.3.Realize data display and historical data storage on the One NET cloud platform,and on this basis,realize the application-side software development based on the Android Studio platform.4.The software and hardware test and data analysis verification of the system are carried out through experiments,which proves that the system can realize the designed function at a long distance,low power consumption and low-cost basis,and the terminal equipment is small in size(the size is about 6cm×4.5cm×1cm)and convenient to carry,it can be used in wearable devices and has strong practicability.This article combines sensor technology,LoRa communication technology,cloud platform technology and computer technology to develop a wearable information perception system in a special environment to provide a solution for its practical promotion and application in the future.