[color sensor principle]
The color mark sensor is actually a reverse device. The light source is mounted perpendicular to the target object, and the receiver is installed at an acute angle with the object so that it detects only the scattered light from the target object, thereby avoiding the sensor directly receiving the reflected light, and The beam is very narrowly focused. Both incandescent and monochromatic light sources can be used for color mark detection.
Incandescent light-based sensors detect color with a colored light source. The incandescent light emits light of various colors including infrared light. Therefore, a sensor using this light source can detect minute changes in color over a wide range. In addition, the incandescent light sensor detection circuit is usually very simple, so you can obtain extremely fast response speed. However, incandescent lamps do not allow vibration and prolonged use, and therefore are not suitable for applications where there is severe shock and vibration.
Color patch sensors that use a monochromatic light source (ie, a green or red LED) do not detect color in principle, but detect light by detecting the difference in reflectance or absorption of the light beam from the surrounding material. Therefore, the identification of the color should be strictly corresponding to the spectral component that is irradiated on the target.
[color sensor characteristics]
1, small design, space-saving: high-precision, multi-function condensed in a compact body W57 × D24 × H38mm, according to the use of equipment can choose cable and connector type 2 kinds. It is also very simple to use with existing equipment.
2. Button lock function: If you use the button lock function, this function can limit the input operation in order to make the sensor setting item not be changed by mistake. And it can also perform "RUN adjustment" that allows only adjustment of the reference value, allowing only slight setting such as "RUN instruction" of the teaching operation. When "RUN adjustment" and "RUN guidance" are set, adjustment and teaching can be performed as in the RUN mode.
3. Timing function: The timing function for canceling unwanted signals of the color mark detection and extending the range of signals sent to the control device is installed.
4. Direct Code Table (D-CODe): The sensor's setting mode can be confirmed by 4-digit code (D-Code).
Xiao Bian concludes: Through the above introduction to the principle and characteristics of color-code sensors , we hope to help everyone work and study.
High Temperature Pressure Sensor Load Cell Level Sensor Gas Sensor
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