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These voltage pulses are counted by the engine control module of the vehicle, which also determines the speed. The same frequency as the rotor rotation is used by optical sensors to produce pulses, but instead of measuring magnetic flux, the optical sensor detects either reflected light or light that has been permitted to pass through slits.
If an optical sensor is being used, the rotor will either have light and dark markings for the optical sensor to detect the reflected light using photosensors, or it will have a series of slits that will allow light from an infrared source to pass through and be detected by a phototransistor on the other side.
The Global optical speed sensor market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
ELECTROMATIC Equipment Companies Visible light optical sensors in the VLS series are primarily made for use in applications involving speed. Ideal for use with our selection of bench-style, panel-mounted, and handheld digital tachometers.
There are numerous mounting options for hands-free applications.In order to conserve battery life when used with battery-powered devices, there are two variants with an on/off switch.A suitable mains adaptor/battery pack is available for usage with all 5vdc VLS variants.
For versions using visible light, up to 1 metre, and for ones using laser light, up to 2 metres (with reflective tape)In some restricted circumstances, a clip-on prefocused adaptor lens (LN1) is available that can enable operation without reflective tapeThese sensors can be powered by instruments from our range that typically range in voltage from 7.5 to 40 volts (vdc) and 5 volts (dc) respectively.
For both RPM and linear speed measurement, the contact adaptor converts the optical function into a direct shaft contactor. The Hall Effect magnetic sensor integrated within the sensor housing, which detects a magnet in the VLS sensor, powers this bayonet-fitting device.
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