Proximity sensors and detectors
Sensors - Design principles
Article REF: R401 V1
Proximity sensors and detectors
Sensors - Design principles

Authors : Yves PARMANTIER, Frédéric KRATZ

Publication date: September 10, 2009, Review date: March 15, 2022 | Lire en français

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6. Proximity sensors and detectors

Figure 20 lists the most common principles of proximity detection:

  • ultrasound (figure 20 a): the transducer (transmitter – receiver) emits a packet of ultrasonic pulses and converts the echo into a voltage signal;

  • variable reluctance inductive sensors (figure

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