Color Sensor

In the realm of modern automated detection and intelligent manufacturing, color sensors, as crucial optoelectronic detection devices, have become an indispensable part of industrial production. Utilizing optical technology, color sensors accurately identify target colors by analyzing the absorption and reflection of light of different wavelengths on the surface of objects, and convert the identification results into electrical signals for output. These sensors are not only capable of detecting basic colors such as red, green, and blue, but also able to distinguish subtle differences between similar colors. Therefore, they are widely used in industries such as packaging and printing, textiles, electronics, plastics, and automotive.

With the advancement of industrial intelligence, the market's demand for color sensors has been continuously increasing, particularly for products with fast detection speeds and high recognition accuracy. In this context, the various color sensors launched by Such, a Good Sensor Online Store, have emerged. These products balance stability and sensitivity, meeting detection needs in different scenarios.

Classification of Color Sensors

Color sensors, as an important branch of photoelectric detection, are primarily classified based on their detection methods, application environments, and performance requirements. Firstly, from the perspective of basic detection methods, there are two common types: reflective and transmissive. Reflective color sensors illuminate the target surface with a light source and analyze the spectral components of the reflected light using a receiver to determine the color. This method is suitable for the detection of opaque objects such as paper, printed materials, fabrics, and labels. Transmissive color sensors, on the other hand, require the detection object to be a transparent or semi-transparent material. The light penetrates the tested object and is analyzed by the receiver, making them commonly used for color detection of plastic films, glass bottles, transparent particles, or liquids.

Secondly, they can be subdivided into single-channel, multi-channel, and high-precision types based on their structure and accuracy. Single-channel color sensors are primarily used for simple color discrimination, such as detecting basic colors like red, green, and blue, and are commonly employed in assembly line sorting where requirements are not stringent. Multi-channel color sensors are capable of processing more color information simultaneously and can identify similar colors or more complex color combinations, making them suitable for scenarios in the textile, packaging, and electronics industries where color consistency is highly important. High-precision color sensors typically feature advanced optical filtering systems and digital signal processing algorithms, enabling them to distinguish subtle color differences and even detect color variations that are difficult for the human eye to discern. They are widely used in high-end print inspection, automotive painting, and industrial robot vision systems.

Furthermore, according to the output and application environment, color sensors can also be divided into analog output type and digital output type. The analog output type reflects color changes through voltage or current signals, suitable for simple monitoring and low-cost applications; the digital output type features multiple interfaces, such as RS48, PNP/NPN, etc., enabling direct connection with PLCs, data collectors, or robot systems, meeting the intelligent requirements of Industry 4.0. Some industrial-grade products also feature anti-interference design, capable of maintaining stable detection in environments with strong light, dust, or high-speed motion.

Color Sensor Applications

In the printing and packaging industry, color sensors are used to detect the accuracy of printing colors, ensuring consistency in color across batches of products. In the textile industry, color sensors can help classify fabrics and yarns to avoid color mixing. In the plastics and food industries, they can quickly identify particles, bottle caps, labels, etc., improving production efficiency.
In automated manufacturing, color sensors can assist robotic arms and robots in judging the color of objects on the production line, enabling automated operations. For instance, color sensors can be utilized to determine the color of moving machine parts, detect the coating color on the surface of components, and aid automated sorting systems in completing assembly tasks.

Color sensors can be applied in the medical industry, such as monitoring the color and dosage of drugs absorbed by the body. They can monitor the color and concentration of drugs, and automatically adjust the dosage and formulation of drugs during treatment, thereby improving the precision and safety of drug therapy.

Textile Industry

Plastics and Food Industry

Medical Industry

Printing & Packaging Industry

SUCH's color sensor products not only excel in performance but also cater to customer needs in design. For instance, the high-speed models are especially suited for packaging lines, completing color recognition in milliseconds without disrupting the overall production pace. The compact models are ideal for devices with limited installation space, facilitating integration into robots and small detection systems. Industrial-grade sensors boast stronger anti-interference capabilities, ensuring stable detection even in high-light environments and high dust conditions. Furthermore, we offer customized services tailored to various needs such as detection distance, output methods (e.g., RS485, PNP/NPN), and installation methods, crafting solutions that are more aligned with practical applications.