What are the applications of color sensors?
1. Discrete photodiode with color filter
The traditional way to sense color is to use a structure that combines three to four photodiodes on a single chip, with red, green, and blue color filters placed on the surface of the photodiodes. A separate transimpedance amplifier feeds the output of each photodiode into an A/D converter with a typical resolution of 8 to 12 bits. The output of the A/D converter is then fed into a microcontroller or other type of digital processor.
The main advantage of this approach is flexibility, as the gain and bandwidth of the amplifier, as well as the speed and resolution of the A/D converter, can be adapted to the requirements of the specific application, allowing the design to be adjusted to achieve a performance and cost trade-off. This flexibility comes at the cost of increased design complexity and a demanding board layout for analog circuits.
2. Integrated optical-voltage converter
Another approach is to combine a photodiode, color filter, and transimpedance amplifier for a single color spectrum band on a single chip. As with the discrete implementation, the outputs of the three elements are fed into an external three-channel A/D converter and then digitally processed. This approach requires fewer components than discrete photodiodes because the noise-sensitive analog circuitry sits on the chip, reducing the board footprint and installation costs, while simplifying design and layout.
3. Integrated optical-frequency converter
The third method is to convert the light intensity directly into a pulse train whose frequency is proportional to the intensity of the red, green, and blue light components of each red, green, and blue channel, respectively. Providing a direct interface to a microprocessor or another digital processor eliminates the need for an additional A/D converter. TAOS's TCS230 is an example of such a device. It divides red, green, and blue sensor-filter combinations into grids.
How the color sensor works
Speaking of the working principle of the color sensor, we still have to start with the characteristics of the color, because the working principle of the color sensor is based on the three primary color principles of color.
First, the characteristics of color
(1) Hue is based on wavelength and is a characteristic property that divides different colors.
(2) Saturation reflects the purity of the color, any color can be regarded as the result of the mixture of a certain spectral color and white, the larger the percentage of spectral color, the higher the saturation of the color.
(3) Lightness is a certain property that describes the brightness and darkness of a color, and is a measurement method of a certain light intensity, which is related to the energy of light.
Second, the principle of three primary colors
Appropriately select three primary colors (red, green, blue), and synthesize them according to different percentages, you can create different color sensations, the brightness of the synthetic color light is determined by the sum of the brightness of the three primary colors, and the chromaticity is determined by the percentage of the three primary color components, the three primary colors are independent of each other, and any one of the primary colors can not be matched by the other two colors.
|
More on that
|
Sick Sensors – How to use color sensors
Method 1:
Put the color sensor on the white object, turn on the red filter, at this time the sensor will emit the frequency, count the emitted frequency, when the count reaches 255, there is a time, this time is recorded as T1.
Turn on the green filter, at this point the sensor will ...
|
|
How to adjust the SICK UM18-51112 sensor
Preparation tools: calibrator to change the distance of the ultrasonic sensor, special regulator and special power supply.
Disconnect the power supply: Disconnect the ultrasonic sensor from the controller and prepare it for commissioning.
Commissioning time: The commissioning time can be adjusted to any time to meet the needs of personalization.
|
|
Introduction to the functional characteristics of SICK's safety switches
1. When the load exceeds the action current, the circuit will be automatically cut off.
2. After the circuit is automatically cut off, the panel indicator light is on, which is convenient for judging the fault part.
3. After troubleshooting, press the red button at the bottom of the panel to restore the normal power supply.
4. For other reasons, the shell ...
|
|
Detailed explanation of fault judgment and maintenance of SICK sensors
Analysis of the factors that may cause the zero point change of the SICK sensor: overload will lead to a sudden change in the zero point, and the output resistance will obviously exceed the specified value impact, as above; Moisture return or turbidity, so it is mainly manifested as a continuous change of 0 point, high and low, etc., at this time, the ground resistance will be further reduced - in ...
|
|
Sick sensors – features of photoelectric sensors
1. Long detection distance
If the detection distance of 10 m or more is retained in the through-beam type, it is possible to achieve detection that is not possible with other detection methods (magnetic, ultrasonic, etc.).
2. There are few restrictions on the detected objects
Due to the detection of shading and reflection caused by the detection of objects ...
|
|
Sick Sensors – How to deal with failures in AGC displacement sensors
(1) Measure the clock signal and data signal of the displacement sensor of 4 hydraulic cylinders, the clock signal is about 2.8V DC and 0.123V AC; The data signals are all about 2.8V DC and 0.245V AC. From this, it can be judged that the PLC clock and MTS data bit transmission and reception pulse loops are normal ...
|
|
Presentation of the Sick Multi Physics Box sensor
advantage
Processes are more transparent and machine downtime is less
The Multi Physics Box enables Condition Monitoring. Whether it's motors, pumps, conveyor belts or fans – the measured values of temperature, vibration behavior and shock show the phase...
|
|
Scope of application for SICK sensors
1. Detect the torque in the working process of various machining centers and automatic machine tools.
2. Detect the load torque and input power of reducer, fan, pump, mixer, winch, propeller, drilling machinery and other equipment.
3. Detection of generators, electric motors, internal combustion engines...
|
|
Sick sensor - the detection procedure of the sensor, the precautions in the detection process
The detection procedure of the sensor
1. Symptom Judgment: Infer the location where the malfunction may occur.
2. Decoder detection: Confirm whether the suspected sensor has a fault code in the decoder, and strengthen the judgment in the data stream.
3. Inspection around the sensor: In case of ...
|
|
Sick Sensor – The difference between a photoelectric sensor and a light sensor
1. Different definitions:
A light sensor is generally a device that can sensitively sense light energy from ultraviolet light to infrared light and convert the light energy into an electrical signal.
Photoelectric sensors are sensors that use an optoelectronic element as a detection element. It first converts the measured change into light ...
|
|
An introduction to the three common types of photoelectric sensors
1. Photoelectric switch sensor
The occlusion between the transmitter and receiver is used to detect states such as motion, object presence, or object position. When the measured object passes through the occlusion beam, the intensity of the light signal received by the receiving head changes, which in turn triggers the switching signal. Photoelectric switch ...
|
|
Sick OD2000 laser displacement sensor was launched
The OD2000 is an excellent multi-range sensor with a laser displacement sensor measuring within 1,200 mm with high accuracy. Technology based on the principle of laser triangulation, as well as the versatility of the measuring range, make it suitable for many different industry applications.
OD2000 multi-range not only solves the problem of electric ...
|
|
SICK brought new products to the Industry Fair
The 17th China International Industry Fair (IAS2015) was held in the National Convention and Exhibition Center (Shanghai) from November 3 to 7, 2015.
|
|
Overview and benefits of the IDM mobile handheld barcode scanner
Overview
Identification codes are easy and secure
IDM's mobile handheld barcode scanner reliably recognizes 1D and 2D codes, including stacked codes such as PDF417. Depending on the field of application and environmental conditions, a standardized or rugged IP65 degree of protection can be provided.
|
|
Sick | Cameras from RIBE Technik are used to monitor the assembly facility
Quality assurance through programmable imaging: RIBE Technik from Schwabach has developed an innovative bumper assembly system that includes an inspection system.
Machine vision from SICK enables the identification of individual components and the monitoring of each operating process as a special system concept ...
|
|
How to maintain the Sick sensor
1. It is necessary to prevent the sensor from contacting corrosive gases, so as not to cause corrosion and affect the measurement results.
2. If the measurement is a high-temperature medium, the SICK sensor should see whether the temperature is within the suitable temperature range of the sensor.
|
|
Sick Sensor - Introduction to the 7 performance indicators of the sensor
1. Linearity: refers to the degree to which the actual relationship curve between the output and input of the sensor deviates from the fitting straight line. Defined as the ratio of the maximum deviation between the actual characteristic curve and the fitted line over the full scale range to the full-scale output.
2. Sensitivity: Sensitivity is the sensor ...
|
|
Sick Sensors - Top 10 Commonly Used Sensors in the Internet of Things
01 Temperature sensor
Temperature sensors measure the heat energy in a heat source, allowing it to detect temperature changes and convert those changes into data.
Machinery used in manufacturing often requires a specific level of ambient and equipment temperature. Similarly, within agriculture, soil temperature is ...
|
|
The range of applications for Sick sensors
1. Detect the torque in the working process of various machining centers and automatic machine tools.
2. Detect the load torque and input power of reducer, fan, pump, mixer, winch, propeller, drilling machinery and other equipment.
3. Detection of generators, electric motors, internal combustion engines...
|
|
Sick sensors – fork photoelectric sensor applications
1. Parking lot or conveyor and other places Its function is to detect the parking position, and the detection distance is relatively long, which is more applicable in parking lots and other occasions.
2. The position of the processed parts In the factory production process, in order to realize the automatic processing state of the parts, the position of the parts must be inspected.
|
|
Contact
working hours
