초록 ▼

In a metering pulse generator, a metering element engages a spring member to effect a gradual bending movement in one direction followed by a rapid return movement during which a pulse signal is developed by a piezoelectric material on the spring member . Energy is absorbed during each such rapid re

In a metering pulse generator, a metering element engages a spring member to effect a gradual bending movement in one direction followed by a rapid return movement during which a pulse signal is developed by a piezoelectric material on the spring member . Energy is absorbed during each such rapid return movement of the spring member to provide damping, inhibit oscillations and effect reliable generation of a single pulse signal which is applied to an amplifier for transmission to a monitoring station.

대표청구항 ▼

A pulse signal generating device for responding to movements of metering elements or the like and transmitting pulse signals to a monitoring station, said device comprising: sensor means positionable to be engaged and deformed by a metering element and to develop an electrical signal during movement

A pulse signal generating device for responding to movements of metering elements or the like and transmitting pulse signals to a monitoring station, said device comprising: sensor means positionable to be engaged and deformed by a metering element and to develop an electrical signal during movement of the metering element through a certain portion of a path of movement thereof, and an amplifier device having input electrode means coupled to said sensor means and output electrode means arranged for coupling through connecting wire means to the monitoring station, said sensor means comprising a spring member of resilient sheet material having a terminal end portion for extending into the path of movement of the metering element to effect a bending movement in one direction away from an initial rest condition and a return movement in the opposite direction back to said initial rest condition, and deformation sensing means for developing an electrical signal in response to bending movements of said spring member, said spring member being so arranged and positioned in said path of movement of said metering element as to gradually effect said bending movement in said one direction and to relatively rapidly effect said return movement to said initial rest condition after said metering element reaches a certain position, and damping and oscillation inhibiting means for controlling the duration of said return movement to control the duration of the generated pulse signal and for inhibiting oscillatory movement of said spring member following movement of said spring member back to said initial rest condition.