With the accelerating pace of urbanization development in China, the intellectualization of urban public facilities has beenAn important symbol of "smart city" construction. With the development and improvement of the Internet of Things sensor technology, more and more applications and service items have been born. For example, public toilets are used as contemporary urban public places. The surrounding environment is clean and the air in the toilets is fresh, which is the key to modern urban construction. Civilized and hygienic signs.

In order to further improve the management level of public toilets, establish a long-term management mechanism, build a modern new city in an all-round way, shapeIntelligent public toilets in "smart cities" use Internet of Things technology in some areas to install an odor monitoring system for intelligent public toilets. As long as the odor in public toilets exceeds the target, the platform can be controlled to alarm. Realize intelligent remote management of public toilet flow monitoring, odor detection, toilet flow detection, squatting position detection, automatic deodorization, etc. The use of updated Internet of Things, cloud computing and other technologies to achieve the perfect combination of sanitation public toilet management and intelligent technology.

Basic monitoring configuration for the construction of smart public toilets, including ammonia, hydrogen sulfide, carbon dioxide, smoke, etc.4 monitoring parameters. The high concentration of these gases and particulate parameters will cause certain damage to the health of indoor personnel. At the same time, it also plays an important role in the emergency early warning of pollution parameters in short time implosion and the use of data to investigate pollution sources.

The components of the public toilet environmental monitoring system can display the temperature and humidity in the toilet in real time through the large screen, and can also display the ammonia, nitrogen andPM2.5 concentration is monitored in real time. Through the intelligent public toilet odor monitoring system, as long as the odor exceeds the standard, the management background will give a real-time alarm to the relevant managers to clean up or find out the cause of the gas in time.

At present, the detection of odor is mainly based onNH3 and H2S gas detection, with the detection of VOCs gas concentration. WeApolloCompany Agent of the United KingdomAlphasenseelectrochemical principle ammonia gas sensorH2S/NH3-B1, professional for industrial environment and environmental protection industry, such as NH3,H2S concentration detection alarm. It has the characteristics of high resolution, high sensitivity, fast response and high cost performance.