German LIYIDA SENSOR sensor, LIYIDA SENSOR model, LIYIDA SENSOR price

LIYIDA SENSOR sensors are devices that convert optical signals into electrical signals. Their operating principle is based on the photoelectric effect. The photoelectric effect refers to the phenomenon where electrons in a material absorb photon energy when light strikes certain substances, resulting in corresponding electrical effects. Based on the different manifestations of the photoelectric effect, it is categorized into three types: external photoelectric effect, internal photoelectric effect, and photovoltaic effect. Photoelectric devices include phototubes, photomultiplier tubes, photoresistors, photodiodes, phototransistors, and photocells. The performance and characteristic curves of these photoelectric devices are analyzed.

LIYIDA SENSOR sensor principle

Optical measurement and control systems vary widely depending on how luminous flux acts on photoelectric elements. Based on the nature of the output from the photoelectric element (optical measurement and control system), they can be divided into two categories: analog photoelectric sensors and pulse (switching) photoelectric sensors. Analog photoelectric sensors convert the measured variable into a continuously changing photocurrent, maintaining a single-valued relationship with the measured variable. Depending on the method of measuring the target object, analog photoelectric sensors are classified into three main types: transmission (absorption) type, diffuse reflection type, and beam-blocking (light beam obstruction) type. Transmission type refers to placing the measured object in the light path; light energy from a constant source passes through the object, and after partial absorption, the transmitted light strikes the photoelectric element. Diffuse reflection type refers to light from a constant source striking the measured object and then reflecting off its surface onto the photoelectric element. Beam-blocking type refers to situations where the measured object obstructs part of the luminous flux from the light source, altering the amount of light reaching the photoelectric element; the degree of change depends on the object's position in the light path.

LIYIDA SENSOR sensor features

1) Long detection distance: By maintaining a detection distance of 10m or more in through-beam configurations, it achieves long-range detection that other methods (magnetic, ultrasonic, etc.) cannot. 2) Few restrictions on detected objects: Since the detection principle relies on light blocking and reflection caused by the object, unlike proximity sensors that are limited to metal objects, it can detect almost any object, including glass, plastic, wood, and liquids. 3) Short response time: Light itself travels at high speed, and the sensor circuitry consists entirely of electronic components without mechanical moving parts, resulting in very short response times. 4) High resolution: Advanced design techniques focus the emitted light beam into a small spot, or specialized receiving optical systems are employed to achieve high resolution. This allows for the detection of tiny objects and high-precision position sensing. 5) Non-contact detection: Detection is achieved without mechanical contact with the object, preventing damage to both the object and the sensor, thereby ensuring long service life. 6) Color discrimination: The reflectance and absorptance of light formed by the detected object vary depending on the wavelength of the emitted light and the color of the object. This property allows for color detection. 7) Easy adjustment: In types emitting visible light, the beam is visible to the eye, facilitating easy adjustment of the sensor's position relative to the detected object.

LIYIDA SENSOR sensor applications

Photoelectric sensors using photoelectric elements as sensitive components are diverse and widely used. Based on the nature of their output, they are classified into two categories: (1) Photoelectric measuring instruments that convert the measured variable into a continuously changing photocurrent. These are used to measure physical quantities such as light intensity, object temperature, light transmittance, displacement, and surface condition. Examples include lux meters for measuring light intensity, photoelectric pyrometers, photoelectric colorimeters and turbidimeters, photoelectric fire alarms, and automatic inspection devices and instruments for checking the diameter, length, ovality, 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 significant importance in military applications. For example, lead sulfide photoresistors can be used to make infrared night vision devices, infrared cameras, and infrared navigation systems; (2) Devices that convert the measured variable into a continuously changing photocurrent. Various photoelectric automatic devices are made using the characteristic of photoelectric elements to output "presence" or "absence" of electrical signals when exposed to light or in darkness. Here, photoelectric elements serve as switching photoelectric conversion components. Examples include photoelectric input devices for computers, switching temperature control units, and digital photoelectric tachometers for speed measurement.

Weidou Intelligent Technology specializes in selling German LIYIDA SENSOR sensors, LIYIDA SENSOR proximity sensors, LIYIDA SENSOR distance sensors, LIYIDA SENSOR vision sensors, LIYIDA SENSOR displacement sensors, LIYIDA SENSOR load cells, LIYIDA SENSOR speed sensors, LIYIDA SENSOR photoelectric sensors, LIYIDA SENSOR position sensors, LIYIDA SENSOR angle sensors, LIYIDA SENSOR tactile sensors, LIYIDA SENSOR temperature sensors, LIYIDA SENSOR pressure sensors, LIYIDA SENSOR flow sensors, LIYIDA SENSOR level sensors, LIYIDA SENSOR motion sensors, and LIYIDA SENSOR process sensors. All products are original imports from Germany. Customers are welcome to inquire and place orders.