German TECNOLOMBARDA sensor TECNOLOMBARDA model TECNOLOMBARDA price

TECNOLOMBARDA 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.

TECNOLOMBARDA sensor principle

Photoelectric sensors achieve control by converting changes in light intensity into changes in electrical signals. Generally, a photoelectric sensor consists of three parts: a transmitter, a receiver, and a detection circuit. The transmitter emits a light beam toward the target. This light beam typically originates from semiconductor sources such as light-emitting diodes (LED), laser diodes, and infrared emitting diodes. The beam is emitted continuously or with modulated pulse width. The receiver comprises photodiodes, phototransistors, and photocells. Optical components such as lenses and apertures are mounted in front of the receiver. Behind it is the detection circuit, which filters valid signals and processes them. Additionally, structural components of photoelectric switches may include emitter plates and optical fibers.

TECNOLOMBARDA sensor classification

1) Slot-type photoelectric sensor: A slot-type photoelectric sensor is formed by mounting a light emitter and a receiver face-to-face on opposite sides of a slot. The emitter produces infrared or visible light, which the receiver detects under unobstructed conditions. When an object passes through the slot and blocks the light, the photoelectric switch activates, outputting a switching control signal to interrupt or connect the load current, thereby completing a control action. Due to structural constraints, the sensing range of slot-type switches is typically only a few centimeters. 2) Through-beam photoelectric sensor: Separating the emitter and receiver increases the sensing range. A through-beam photoelectric switch consists of one emitter and one receiver, commonly referred to as a through-beam photoelectric switch. Its sensing range can reach several meters to tens of meters. When using a through-beam photoelectric switch, the emitter and receiver are installed on opposite sides of the object's path. As the object passes and blocks the light path, the receiver activates and outputs a switching control signal. 3) Retro-reflective photoelectric switch: The emitter and receiver are housed in the same unit, with a reflector plate installed in front. This configuration utilizes the reflection principle for photoelectric control and is known as a retro-reflective (or mirror-reflective) photoelectric switch. Under normal conditions, light emitted by the source is reflected back by the reflector plate and received by the receiver. Once an object blocks the light path and the receiver no longer detects light, the photoelectric switch activates and outputs a switching control signal. 4) Diffuse-reflective photoelectric switch: The sensing head of a diffuse-reflective photoelectric switch also contains an emitter and a receiver, but there is no reflector plate in front. Under normal conditions, the receiver does not detect the light emitted by the source. During detection, when an object passes through, it blocks the light and reflects part of it back to the receiver. Upon receiving this light signal, the switch outputs a switching signal.

TECNOLOMBARDA sensor application cases

1) Application of photoelectric sensors in laser weapons: Since photoelectric sensors are highly sensitive to infrared radiation, visible light, or both, they are particularly vulnerable to laser attacks. Furthermore, electronic systems and the sensors themselves are highly susceptible to interference from thermal noise and electromagnetic noise generated by lasers, which can prevent normal operation. On the battlefield, laser weapons primarily attack photoelectric sensors in the following ways: using a laser beam of appropriate energy to "blind" the sensor, rendering it unable to detect or continue tracking already identified targets. Alternatively, if the sensor is guiding a weapon toward a target, blinding it causes loss of target acquisition. In summary, as sensors play an increasingly critical role on the battlefield while remaining highly susceptible to laser attacks, they have become primary targets for low-energy laser weapons. 2) Application of photoelectric sensors in automatic meter reading systems: With advancements in microelectronics, sensor technology, computer technology, and modern communications, photoelectric sensors can be utilized to develop automatic meter reading systems. The aluminum disk of an electricity meter rotates under torque generated by eddy currents and magnetic fields. Using a photoelectric sensor converts the number of rotations of the aluminum disk into pulse counts. For example, by partially blackening a section of the rotating shiny aluminum disk and pairing it with a reflective photoelectric emitter-receiver pair, pulses are generated at the blackened section during rotation. The rotational speed of the aluminum disk is sampled and converted into corresponding pulse counts, which are then sent via an optocoupler isolation circuit to the T0 port of the CPU for counting processing. Using optocoupler isolators effectively prevents interference signals from entering the microcomputer. Combined with other transmission methods, this forms an automatic meter reading system. 3) Application of photoelectric sensors in monitoring smoke and dust pollution: A photoelectric sensor is a compact electronic device that detects changes in received light intensity, achieving control functions by converting these light intensity changes into electrical signal variations. Due to characteristics such as non-contact operation, fast response, and reliable performance, photoelectric sensors are widely used in industrial automation equipment and robotics. We can leverage these properties to monitor smoke and dust conditions; thus, the strength of the output signal from the photoelectric sensor reflects changes in flue gas turbidity. 4) Hygienic washdown-resistant photoelectric sensors: Washdown-resistant sensors provide extremely high reliability and ease of use while minimizing operating costs. Equipped with IO-Link interfaces and the proTect+ sealing concept, which significantly extends service life, these two new sensor models are suitable for demanding applications and represent ideal solutions for the food and beverage industry.

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