Mobile Toilet Circuit Diagram Illustration

Currently, there is no direct and complete circuit diagram illustration for the entire mobile toilet, but its circuit composition and working principle can be understood based on relevant circuit information.

Power Supply Architecture of Mobile Public Toilets in Expressway Service Areas

The power supply for mobile public toilets in expressway service areas starts with connecting to a 220V power source. The alternating current is then converted to direct current through an AC-DC module, with common converted voltages being 12V or 24V. The converted direct current supplies power to various devices, including presence/absence indicator signs, ceiling-mounted speakers, exhaust fans, toilet cubicle human body sensors, lighting fixtures, and intelligent locks for partition doors. These devices do not operate independently but are connected to a controller via IO signals for centralized control and management. For example, when someone enters a toilet cubicle, the human body sensor detects the signal and transmits the information to the controller via IO signals. The controller then controls the lighting fixtures to turn on and the exhaust fan to start based on preset programs. When the cubicle is unoccupied, the corresponding devices also stop operating under the controller's instructions.

Circuit of Automatic Toilet Flushing Controller in Public Toilets

The core function of the circuit of the automatic toilet flushing controller in public toilets is to flush the toilet at regular intervals through a solenoid valve, with different flushing frequencies during the day and night, and it also has a manual flushing control function. The power supply section consists of a transformer T, VD1-VD4, VD5, and C1, forming a 12V power supply circuit that provides a stable power source for the entire control circuit. The NE555 timer circuit is the core control component, which, together with surrounding components, forms a pulse signal oscillator with an automatically adjustable duty cycle. Through this oscillator, the circuit can control the on/off state of the solenoid valve based on preset time parameters, thereby achieving timed toilet flushing. For example, during the day when toilet usage is frequent, the oscillator adjusts the duty cycle to increase the number of solenoid valve flushes. At night when usage decreases, the flushing interval time becomes longer.

Circuit Layout for Automatic Urinal Flushing

The circuit layout for automatic urinal flushing can refer to the installation situation of urinal bowls. If the sensor is powered by 220V, pre-burying the power supply needs to be considered during installation to ensure the sensor can operate normally. However, there is currently no detailed information on the specific circuit diagram for automatic urinal flushing, but it can be inferred that the circuit may include sections for power conversion, signal detection, and control execution. After the sensor detects a usage signal, it controls the solenoid valve to open for flushing.