German BECOT SAS sensors, BECOT SAS models, BECOT SAS prices

BECOT SAS sensors, also known as displacement sensors, are a type of sensor used to detect the distance to an object to perform a preset function, and are widely applied. Main products include mobile phone proximity sensors and long-distance measurement sensors, applied in smart belts. Distance sensors can be classified into optical distance sensors, infrared distance sensors, ultrasonic distance sensors, etc., based on their working principles. Most distance sensors used in mobile phones are infrared distance sensors, which have an infrared emitting tube and an infrared receiving tube. When the infrared light emitted by the transmitting tube is received by the receiving tube, it indicates that the distance is close, and the screen needs to be turned off to prevent accidental operation. When the receiving tube does not receive the infrared light emitted by the transmitting tube, it indicates that the distance is far, and there is no need to turn off the screen. The working principles of other types of distance sensors are similar; they also judge the distance by the emission and reception of a certain substance, such as ultrasonic waves or light pulses.

BECOT SAS sensor principles

Optical measurement and control systems are diverse, manufactured based on different principles of how luminous flux acts on photoelectric elements. They can be divided into two categories according to the nature of the output of the photoelectric element (optical measurement and control system): analog photoelectric sensors and pulse (switching) photoelectric sensors. Analog photoelectric sensors convert the measured quantity into a continuously changing photocurrent, showing a single-valued relationship with the measured quantity. Analog photoelectric sensors can be divided into three major categories based on the method of measuring the target object: transmission (absorption) type, diffuse reflection type, and shading (beam blocking) type. The transmission type refers to placing the measured object in the optical path; the light energy emitted by a constant light source passes through the measured object, and after partial absorption, the transmitted light is projected onto the photoelectric element. The diffuse reflection type refers to the light emitted by a constant light source being projected onto the measured object, and then reflected from the surface of the measured object onto the photoelectric element. The shading type refers to when the luminous flux emitted by the light source is partially blocked by the measured object, causing the luminous flux projected onto the photoelectric element to change; the degree of change is related to the position of the measured object in the optical path.

BECOT SAS sensor features

1) Long detection distance: If a detection distance of more than 10m is maintained in through-beam types, it enables long-distance detection that other methods (magnetic, ultrasonic, etc.) cannot achieve. 2) Few restrictions on detected objects: Since the detection principle is based on shading and reflection caused by the detected object, unlike proximity sensors that limit detection to metals, it can detect almost all objects such as glass, plastic, wood, and liquids. 3) Short response time: Light itself is high-speed, and the sensor circuits are composed of electronic components, so there is no mechanical operating time, resulting in a very short response time. 4) High resolution: High resolution can be achieved by concentrating the emitted light beam into a small spot through advanced design technology, or by constructing a special light-receiving optical system. It can also perform detection of tiny objects and high-precision position detection. 5) Non-contact detection is possible: Detection can be performed without mechanical contact with the object, so neither the detected object nor the sensor will be damaged. Therefore, the sensor can be used for a long time. 6) Color discrimination is possible: The reflectance and absorptance of light formed by the detected object vary depending on the wavelength of the incident light and the color combination of the detected object. Using this property, the color of the detected object can be detected. 7) Easy adjustment: In types that project visible light, the emitted light beam is visible to the eye, facilitating adjustment of the position of the detected object.

BECOT SAS sensor applications

Photoelectric sensors using photoelectric elements as sensitive components are diverse and widely used. They can be divided into two categories based on the nature of the output: (1) Photoelectric measuring instruments that convert the measured quantity into a continuously changing photocurrent can be used to measure physical quantities such as light intensity, object temperature, light transmittance, displacement, and surface status. For example: illuminance meters for measuring light intensity, photoelectric pyrometers, photoelectric colorimeters and turbidimeters, photoelectric alarms for fire prevention, and automatic inspection devices and instruments for checking the diameter, length, ellipticity, and surface roughness of machined parts, all of which use photoelectric elements as sensitive components. Semiconductor photoelectric elements are not only widely used in civil industrial fields but also hold an important position in military applications. For example, lead sulfide photoresistors can be made into infrared night vision devices, infrared cameras, and infrared navigation systems; (2) Converting the measured quantity into a continuously changing photocurrent. Various photoelectric automatic devices are made using the characteristic of photoelectric elements to output "yes" or "no" electrical signals when exposed to light or no light. Photoelectric elements are used as switching photoelectric conversion elements. For example, photoelectric input devices for electronic computers, switching temperature regulation devices, and digital photoelectric tachometers for speed measurement.

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