Principle of Intelligent Mobile Toilet

The principle of intelligent mobile toilets is mainly reflected in two aspects: water conservation and intelligent control, achieving efficient resource utilization and automated management through technological integration.

Water Conservation Principle

1. Vacuum Negative Pressure Flushing System: This system utilizes the atmospheric pressure difference, generating negative pressure through a vacuum pump to quickly suck waste into the pipeline. Each flush requires only 0.5-1 liters of water, compared to 6-10 liters in traditional flush toilets, resulting in a water-saving rate of over 80%. The core lies in accelerating waste discharge through negative pressure, reducing water flow requirements, and preventing pipeline blockages.
2. Foam Sealing Technology: A small amount of foaming agent generates dense foam that covers the toilet bowl surface, forming a physical barrier. The foam not only isolates odors but also lubricates the pipeline, allowing waste to slide down smoothly. This technology requires almost no additional water for flushing, with foaming agent replenishment only needed during maintenance, further reducing water consumption.
3. Recirculating Water Treatment System: Gray water from handwashing and face washing is collected and subjected to multi-stage filtration (such as sand filtration and activated carbon adsorption) and ultraviolet or ozone disinfection to remove impurities and microorganisms before being reused for toilet flushing. This system achieves closed-loop water resource utilization, particularly suitable for water-scarce areas or mobile scenarios.

Intelligent Control Principle

1. Human Body Sensing and Automatic Doors: Infrared or microwave sensors detect human proximity, triggering the automatic opening of the door. After use, the door closes and initiates an internal cleaning program (such as spraying disinfectant or ultraviolet sterilization), reducing manual contact and enhancing hygiene levels.
2. Gas Monitoring and Deodorization: Built-in sensors for ammonia, hydrogen sulfide, etc., continuously monitor air quality. When odor concentration exceeds the standard, the system automatically activates exhaust fans or spray devices (such as releasing plant essential oil deodorizers) to quickly improve the environment and prevent odor diffusion.
3. Remote Management Platform: Based on IoT technology, managers can view toilet status in real-time via mobile phones or computers, including usage frequency, water consumption, waste storage volume, and equipment operating parameters (such as water pump pressure and battery level). In case of data abnormalities, the system automatically alerts, facilitating timely maintenance or waste removal arrangements and reducing operational costs.

Additionally, some intelligent public toilets use an STM32 microcontroller as the core controller, combined with water pressure and air pressure sensors and infrared obstacle avoidance modules, to achieve automatic flushing, ventilation control, and fault alarms. For example, when sensors detect that someone has left the toilet bowl, the microcontroller triggers the flushing valve; if air pressure is abnormal (such as a vacuum pump failure), it immediately stops operation and sends an alarm to ensure system safety and stability.