German CAPTEURS SYSTEMES sensors, CAPTEURS SYSTEMES models, CAPTEURS SYSTEMES prices

CAPTEURS SYSTEMES sensors are sensors that measure the operating speed of the measured object and convert it into an output signal. Speed sensors include linear speed sensors and rotational speed sensors. With the development of technology, traditional measuring equipment can no longer meet current needs and is gradually being phased out, while laser speed sensors are widely used and play an important role in product manufacturing. By connecting to a computer, they enable automated and intelligent measurement control of the measured object. This is the product of the combination of modern measurement technology and computer technology.

CAPTEURS SYSTEMES sensor structure

It consists of two parts: the scale grating and the grating read head. The figure on the right shows the structure of the grating scale. The key part of the grating detection device is the grating read head, which consists of a light source, condensing lens, index grating, photoelectric elements, and adjustment mechanisms. There are many structural forms of grating read heads, classified according to their structural characteristics and application scenarios into direct-reception read heads (also known as silicon photovoltaic cell read heads, mirror-image read heads, beam-splitter read heads, and metal grating reflective read heads).

CAPTEURS SYSTEMES sensor principle

The essence of a grating displacement sensor is to perform measurement using the grating pitch as a standard ruler. High-resolution grating scales are generally expensive and difficult to manufacture. To improve system resolution, Moiré fringes need to be subdivided; grating scale sensor systems mostly use electronic subdivision methods. When two gratings overlap with a slight inclination angle, Moiré fringes are generated in a direction roughly perpendicular to the grating lines. As the grating moves, the Moiré fringes move up and down accordingly. This converts the measurement of grating pitch into the measurement of the number of Moiré fringes. Within the width of one Moiré fringe, placing 4 photoelectric devices at specific intervals enables electronic subdivision and direction judgment functions. For example, for a grating scale with 50 line pairs per mm, the grating pitch is 0.02mm. If four-fold subdivision is used, counting pulses with a resolution of 5μm can be obtained, which achieves high precision in general industrial measurement and control. Since displacement is a vector, both its magnitude and direction must be detected; therefore, at least two photoelectric signals with different phases are required. To eliminate common-mode interference, DC components, and even harmonics, a differential amplifier composed of low-drift operational amplifiers is typically used. The 4 photoelectric signals obtained from 4 photosensitive devices are sent to the input terminals of 2 differential amplifiers respectively. The two signals output from the differential amplifier have a phase difference of π/2. To obtain direction judgment and counting pulses, these two signals must first be shaped into square waves with a duty cycle of 1:1. Then, by comparing the phase of the square waves, the movement direction of the grating scale can be determined. By counting the square wave pulses, the displacement and speed of the grating scale can be obtained.

CAPTEURS SYSTEMES sensor usage precautions

When plugging and unplugging the connector of the linear encoder sensor and the digital readout, ensure the power is turned off. Install an external protective cover whenever possible, and promptly remove chips and oil that splash onto the scale to strictly prevent any foreign matter from entering the housing of the linear encoder sensor. Regularly check whether the mounting and connection screws are loose. To extend the service life of the dust-proof sealing strip, apply a thin, even layer of silicone oil to the sealing strip, taking care not to let it splash onto the glass grating etched surface. To ensure the reliability of the linear encoder sensor, clean and wipe the linear encoder scale surface and the index grating surface at regular intervals using an ethanol mixture (each 50%), keeping the glass linear encoder scale surface clean. The linear encoder sensor is strictly prohibited from being subjected to severe vibration or impact, as this may damage the linear encoder scale; if the linear encoder scale breaks, the linear encoder sensor will fail. Do not disassemble the linear encoder sensor yourself, and never arbitrarily change the relative spacing between the main grating scale and the secondary grating scale. Otherwise, this may compromise the accuracy of the linear encoder sensor and cause relative friction between the main grating scale and the secondary grating scale, damaging the chrome layer and thus the grating lines, resulting in scrapping of the linear encoder scale. Take care to prevent oil stains and water from contaminating the linear encoder scale surface, as this may disrupt the distribution of the grating lines and cause measurement errors. The linear encoder sensor should be operated in environments with severe corrosive effects as little as possible, to avoid corroding the grating chrome layer and the linear encoder scale surface, which would degrade the quality of the linear encoder scale.

Weidou Intelligent Technology specializes in selling German CAPTEURS SYSTEMES sensors, CAPTEURS SYSTEMES proximity sensors, CAPTEURS SYSTEMES distance sensors, CAPTEURS SYSTEMES vision sensors, CAPTEURS SYSTEMES displacement sensors, CAPTEURS SYSTEMES torque sensors, CAPTEURS SYSTEMES speed sensors, CAPTEURS SYSTEMES photoelectric sensors, CAPTEURS SYSTEMES position sensors, CAPTEURS SYSTEMES angle sensors, CAPTEURS SYSTEMES tactile sensors, CAPTEURS SYSTEMES temperature sensors, CAPTEURS SYSTEMES pressure sensors, CAPTEURS SYSTEMES flow sensors, CAPTEURS SYSTEMES level sensors, CAPTEURS SYSTEMES motion sensors, CAPTEURS SYSTEMES process sensors. Original imports from Germany. Welcome inquiries and orders from users.