The Omron EE-CH4 is a compact reflective photosensor designed for object detection and general-purpose sensing applications. This sensor utilizes an infrared LED and a phototransistor, enabling it to detect the presence or absence of objects by measuring the reflected light. Its small size and simple interface make it easy to integrate into various systems. The EE-CH4 offers reliable performance in a wide range of environmental conditions.

Applications

• Object detection in automated systems
• Positioning control
• Paper detection in printers and copiers
• Edge detection
• General-purpose sensing

Features

• Compact size
• Reflective sensing method
• Infrared LED light source
• Phototransistor output
• Operating Voltage: 5 VDC
• Sensing Distance: Approximately 3 mm (typical)
• Operating Temperature: -25°C to +85°C
• Response Time: Typically a few milliseconds

Benefits

• Compact Size: Enables integration into space-constrained applications.
• Simple Interface: Allows for easy connection to microcontrollers and other control systems.
• Reliable Detection: Provides consistent object detection performance.
• Wide Operating Temperature: Suitable for use in a variety of environmental conditions.
• Cost-Effective: Provides a low-cost solution for object detection.

Additional Details

The EE-CH4 reflective photosensor operates by emitting infrared light from its built-in LED. When an object is present within the sensing range, the light reflects back towards the sensor's phototransistor, which then generates an output signal. The sensor's sensitivity can be adjusted by controlling the current to the LED or by using external circuitry to condition the output signal. The sensor is typically mounted on a PCB and connected using through-hole or surface-mount soldering techniques. Its robustness and reliability make it a popular choice for industrial automation, consumer electronics, and other applications requiring object detection. The output signal can be directly connected to a microcontroller's digital input, or it can be amplified and processed using analog circuitry.