Remote monitoring system with wireless sensors module for room environment

A wireless sensor module with several air quality monitoring sensors was developed for indoor environment monitoring system in home networking. The module has various enlargements for various kinds of sensors such as humidity sensor, temperature sensor, CO2 sensor, flying dust sensor, etc. The developed wireless module is very convenient to be installed on the wall of a room or office, and the sensors in the module can be easily replaced due to well-designed module structure and RF connection method. To reduce the system cost, only one RF transmission block was used for sensors’ signal transmission to 8051 microcontroller board in time-sharing method. In this home networking system, various indoor environmental parameters could be monitored in real time from RF wireless sensor module. Indoor vision was transferred to client PC or Personal Digital Assistant (PDA) from surveillance camera installed indoor or desired site. Web server using Oracle DB was used for saving the visions from web-camera and various data from wireless sensor module.