US 4,866,436 A · Device for transmitting measurement values of a sensor

Abstract

During the transmission of measurement values of a sensor from a transmitter circuit to a receiver circuit, for example via an optical fibre, use has been made of a device which must be activated by the receiver circuit before a measurement value can be transmitted. This is done in order to achieve potential freedom. The novel device for transmitting the sensor measurement values aims to operate faster and independently of the receiver circuit. The sensor (1) is activated by control pulses generated by a pulse generator circuit (3) and applies to the pulse generator circuit, during the occurrence of a control pulse, a measurement pulse which is dependent on the measurement value circuit. The repetition frequency and/or the width of the control pulse then depends on the amplitude value of the measurement pulses.

Claims16

Dependent claims

A device for transmitting measurement values of at least one sensor comprises:

a transmitter circuit and a receiver circuit which includes an evaluation circuit, characterized in that the transmitter circuit includes means for intermittently activating the sensor, said activating means comprising a pulse generator circuit for generating control pulses and wherein the sensor and the pulse generator circuit are connected in a feedback loop, the sensor being activated by the control pulses for supplying the pulse generator circuit with a measurement pulse during the occurrence of a control pulse, which measurement pulse depends on the measurement values, the repetition frequency and/or width of the control pulses being dependent on the amplitude value of the measurement pulses.

A device for transmitting data representing measurement values supplied by at least one sensor comprising:

a pulse generator circuit having input means for receiving measurement value signals from said sensor and output means for supplying control pulses to a receiver, and means coupled to said output means and responsive to said control pulses for activating the sensor in synchronism with the control pulses and during time intervals when the control pulses are present at said output means, whereby the sensor supplies to the pulse generator circuit measurement pulses during occurrence of the control pulses and with the measurement pulses determined by the measurement values derived by the sensor, and wherein the pulse generator circuit includes means for adjusting at least one of several parameters of the control pulses dependent on the amplitude of the measurement pulses, said parameters being repetition frequency and width of the control pulses.

Dependencies are inferred from the claim text.

Device for transmitting measurement values of a sensor

Life of this patent

Device for transmitting measurement values of a sensor

Life of this patent

Abstract

Claims16