What is the application and working principle of the color sensor

The color sensor detects the color by comparing the reference color and the object color that have been taught before. When the two colors are consistent within a certain error range, the detection result is output.

　　 A new sensor can keenly detect color changes, helping front-line workers to accurately distinguish color and other issues.

Color sensors usually use assembly lines to detect specific parts. The color sensor can detect strange differences in similar or highly reflective colors. For example, in the automotive industry, metal coatings are difficult to distinguish between gray and gold. This is the main part of the mating parts, such as the mirror body or the bumper can not be completed without the help of the sensor. In addition, the color sensor can quickly change settings or process multiple colors with limited color detection capabilities.

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Electronics technology, optics, and software technology promote the development of color sensors. This technique allows a more sensitive sensor to ignore light and not distinguish between beautiful colors. It can be easily and flexibly adjusted to make, accurate color correction.

　　 A typical color sensor uses high-intensity white LEDs to guide the light modulation in the project. Reflective factors include red, green, blue (RGB) and intensity (RGB). This information is used to verify the accuracy and assembly of the parts, and to manipulate the color of the finished product with accuracy.

　　 In a typical application, the machine operator places a sensor of a color sample in front and matches it with the specific color through programming. During and after this period, the operator may notice that the pairing fails, the color is slightly darker or lighter, but the quality standard is still acceptable. The operator then reorganizes the sensor with larger high and low set points, and builds the ambitious scale during trial and error.

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Assuming that the sensor has multiple channels, it can be programmed to recognize different colors in each channel, and each channel signal is an independent alarm output. This technique allows simple color recognition or pairing, such as sorting or partial recognition functions, to pass/fail criteria to be met.

　　 The new generation of color sensors provides three additional outputs, which indicate RGB colors. Its benefits include more intelligent operation production.

　　 Actually, the initial RGB reading output by the sensor is an analog signal. Analog signals are more suitable for communication, because a typical serial protocol reads three paths per 150μs throughput. Every 1023 steps, the sensor can simulate the initial RGB signal and output 5mV with 10-bit resolution.

　　 Assuming that the reason for changing the color is not easy to find or display, then the analog RGB signal can digitize the data and input it into the data acquisition system. It guarantees the overall change trend of the sensor reading analysis. Some sensors provide initial digital readings in the form of data dumps.