INDUCTIVE STATIC SWITCH Russian patent published in 2004 - IPC

FIELD: devices of automatic equipment, applicable for obtaining of information on a change of parameters, operating condition or state of separate units and processes transmitted to the control units of the automatic equipment systems from the sensors installed in the points of measurement or monitoring, for example, allowing the displacement of the measuring system of this or that parameter to bring to the electric values at the output of the sensor. SUBSTANCE: the inductive static switch has series- self-excited oscillator, demodulator, trigger element and an output power amplifier, low-pass filter, the magneto-inductive sensing element is made in the form of a ferrite cup, having a Ш-shape in section, with a coil placed on its central core, the coil turns are included in the LC-circuit of excitation of the self-excited oscillator as inductance, and the self-excited oscillator proper uses a super-regenerative circuit, the demodulator is built around the circuit of a synchronous detector, the trigger element uses a two-stable threshold circuit with a binary pinch-off, besides, the output contacts of the output power amplifier are made in the form of logic levels: log.0 or log. 1, log. 1 corresponds to the level of the supply voltage, and log.0 is close to zero of this voltage. EFFECT: enhanced operating qualities due to a technological transparence, low cost of equipment means, low level of power consumption, optimization of the electronic circuit, enhanced sensitivity and precision at a simultaneous expansion of the measurement range. 3 cl, 3 dwg