The field of applying optocouplers, in the case when the user has access to the optical path of the light beam, is becoming larger and larger. Polaroid optocoupler LED–phototransistor is a device in which it is introduced a system of polaroid filters, on the path of the light beam that performs the optical coupling between the transmitter and receiver modules. By introducing this system of polaroid filters, one can modify the intensity of the output

A novel design for a mechanical-electrical transducer is presented in this article along with the reliminary testing of the transducer prototype. By using a Polaroid optocoupler as the motion sensor, this device combines the transducer feature to convert mechanical signals to electrical ones with the optoisolator feature of galvanic separation between two voltage modules. Signal conditioning circuit is a current-to-frequency converter, while the

Mechanical-electrical Optoisolator Transducers are Polaroid optocouplers whose main function is to convert a rotational and/or a translation movement into electrical signal. These devices combine transducers feature to connect two physical systems operating with signals of different nature, with optocouplers feature of galvanic separation of two different voltage modules. This is achieved by introducing a mechanically controlled system of Polaroid

This article presents a theoretical and experimental study of designing a mechanoelectric optoisolator transducer with hysteresis. Our research is centred upon designing transducers on the basis of optical sensors, as photoelectric conversions eliminate the influence of electromagnetic disturbances. Conversion of the rotation/translation motions into electric signals is performed with the help of a LED-photoresistor Polaroid optocoupler. The driver

This paper presents the results of the analysis of Polaroid optocoupler mechanical-electrical sensor static characteristics. Our paper achieves analysis on distance adjustment Polaroid optocouplers of LED-photoresistor and LED-phototransistor types. These optocouplers analysis was performed in two distinct cases by using 0.2 mm and 0.7 mm thick Polaroid filters. At present, this Polaroid optocoupler mechanical-electrical sensor is only a prototype.

Mechanical-electrical optoisolator transducers are position transducers which use as a sensor, a Polaroid optocoupler specialized in converting rotation and/or translation movements into electrical signals. The used sensor is an analog device whose transfer characteristic is non-linear. In this article is presented a method of linearizing this new type sensors's characteristic. The method is based on the analysis of the physical processes which take

LED-photoresistor mechanical-electrical optoisolator transducers are Polaroid optocouplers specialized in converting rotation/translation movements into electrical signals. The processes standing at the basis of such conversion are: light's polarization, re-orientation of the polarizing plan and modification of the distance between source and photoreceiver. This device is at the crossroad of three research directions: MEMS, Smart Lighting and that