What Are The Detection Methods And Characteristics Of Photoelectric Sensors?

What are the detection methods and characteristics of photoelectric sensors?
1, through the type. Detection is detected by detecting an object that blocks the optical axis between the opposing transmitter and receiver. The detection distance is long. The detection position is highly accurate. If it is an opaque body, it can be directly detected regardless of the shape, color and material. Resistant to dirt and dust on the lens.

2. Retroreflective type. The detection is performed by detecting the light returned by the reflector after the object occlusion sensor is emitted. Since the single side is a reflector, it can be installed in a small space. The wiring is simple and can be detected over long distances compared to the reflective type. Optical axis adjustment is very easy. If it is an opaque body, it can be directly detected regardless of the shape, color and material.

3. Reflective type. The light is irradiated onto the detection object, and the reflected light from the detection object is received and detected. Only the sensor body can be installed, and it does not take up space. No optical axis adjustment is required. If the reflectance is high, the transparent body can also be detected. Can distinguish colors.

4. Narrow beam reflection type. The spot is irradiated on the detecting object, and the reflected light from the detecting object is received and detected. Small targets can be detected. Detectable mark. Detection can be started from a space such as a machine. The detection point is visible. 5. Limited reflection type. With a structure that is angled at the transmitter and receiver, only the restricted areas where the respective optical axes intersect are detected. The background effect is small. The distance should be short. Small bumps can be detected.

6, distance setting type. The spot is irradiated onto the detecting object and detected by the difference in angle from the reflected light of the detecting object. Not affected by backgrounds with high reflectivity. Stable detection is possible even if the color of the detected object and the reflectance of the material are different. High-precision detection of small objects is possible.

7. Glossiness is determined by reflection type. The glossiness of the photoelectric sensor distinguishes the reflection type by irradiating the spot onto the detection object, and detecting the difference in gloss by the difference between the specular reflection and the diffuse reflection. Can be used online. Not affected by color. Transparent bodies can also be detected.