An automatic hand sanitizer machine uses sensors to dispense sanitizer without physical contact. When hands are detected, a motor or pump releases a preset amount of sanitizer, ensuring hygiene and minimizing contamination. It’s a convenient, touchless solution for promoting cleanliness in public spaces, offices, and homes.
An automatic hand sanitizer machine without a microcontroller uses a simpler mechanism, typically relying on sensors and mechanical components to function. These machines dispense sanitizer without requiring physical contact, helping to maintain hygiene and reduce the spread of germs.
Components
Infrared (IR) or Ultrasonic Sensor: The machine uses an IR or ultrasonic sensor to detect the presence of hands. When hands come within a certain range, the sensor triggers the dispensing mechanism. Unlike microcontroller-based designs, this system directly connects the sensor to the dispensing motor.
Relay or Timer Circuit: A relay or timer circuit is often used in place of a microcontroller to manage the dispensing process. When the sensor detects hands, the relay activates the motor for a preset time, ensuring a consistent amount of sanitizer is dispensed without complex programming.
Pump or Motor: The dispensing mechanism is powered by a small DC motor or peristaltic pump, which pushes the sanitizer from the reservoir. The motor is activated directly by the signal from the sensor, making the system simple and efficient.
Power Supply: Typically, the machine operates on batteries (e.g., AA or rechargeable Li-ion batteries) or a direct power supply through an adapter. The power source is connected to the sensor and motor for continuous operation.
Sanitizer Reservoir: A refillable container holds the liquid sanitizer. The capacity can vary depending on the design, but it’s typically large enough to last through multiple uses without frequent refills.
Housing: The machine’s body is made from plastic or metal to protect the internal components and ensure durability in various environments, from offices to public places.
Working Principle
When a person places their hands under the dispenser, the sensor detects the presence and activates the relay circuit. This, in turn, powers the motor or pump for a fixed time, dispensing a set amount of sanitizer. The entire process happens within seconds, offering a quick and hygienic way to sanitize hands.
Benefits
Simplicity: Without the need for a microcontroller, the machine has fewer components and is easier to assemble and maintain.
Hygiene: The touchless design prevents direct contact, reducing the risk of contamination.
Cost-Effective: The absence of a microcontroller reduces overall costs, making the machine more affordable while still providing reliable performance.
Low Maintenance: Fewer electronic components mean the machine requires minimal maintenance.
Conclusion
An automatic hand sanitizer machine without a microcontroller offers a practical, cost-effective solution for maintaining hygiene. It’s simple yet effective, suitable for use in high-traffic areas like offices, schools, hospitals, and public facilities where reducing the spread of germs is essential.
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