Abstract: A speed monitoring device and a passenger conveying device. The speed monitoring device includes a transmission rotor disposed on a shaft side surface of a shaft of which the speed is to be measured and rotating with rotation of the shaft of which the speed is to be measured; an encoder having an input shaft, the input shaft of the encoder being connected to the transmission rotor and rotating with rotation of the transmission rotor; and a mounting bracket for securing the transmission rotor and the encoder to a position where they are to be mounted.

Abstract: A converter assembly for providing a liquid in a measuring line includes a stationary housing and a component being rigidly connected to the housing. A journal is slidingly supported in the stationary housing and defines a gap disposed between the component and the journal forming a throttle. The journal has an axis of rotation, an end, at least one transverse bore formed in the journal, and a journal bore formed in the journal from the end along the axis. The housing has a groove formed therein surrounding the journal and communicating with the journal bore through the at least one transverse bore. A liquid flow path communicates with a reservoir at a primary pressure and a pressureless sump and includes the throttle, the groove, the transverse bore and the journal bore. A measuring line branching off from the path between the transverse bore and the throttle carries the liquid at a measurement pressure corresponding to a rotational speed of the journal rotating about the axis.

Abstract: An integral sensor for an hydraulic motor measures speed, torque and rotation displacement produced by the motor by combining pressures produced in pressure chambers of the hydraulic motor as the rotor rotates enabling a pressure sensor to provide a pressure signal defined by at least three states which permits incremental movement of the rotor to be determined. Zero positioning determined by coupling pressure through the rotor to create a unique occurrence reflected in the pressure signal once per revolution.

Abstract: A fluidic sensor providing a differential pressure signal proportional to the angular velocity of a rotary input. In one embodiment the sensor includes a fluid pump having an impeller coupled to a rotary input. A housing forming a constricting fluid flow chamber is connected to the fluid input of the pump. The housing is provided with a fluid flow restrictive input to the flow chamber and a port communicating with the interior of the flow chamber. The differential pressure signal measured across the flow restrictive input is relatively noise free and proportional to the square of the angular velocity of the impeller. In an alternative embodiment, the flow chamber has a generally cylindrical configuration and plates having flow restrictive apertures are disposed within the chamber downstream from the housing port. In this embodiment, the differential pressure signal is found to be approximately linear with the angular velocity of the impeller.

Abstract: A system for measurement of the speed and torque produced by hydraulic motors. A strain gauge-based, integral hydraulic motor speed and torque sensor is accurate in measuring the motor speed at system pressures greater than 1.4 megapascals (MPa) (203 lb./in.sup.2). The sensor can also accurately determine the torque being produced by the motor from the fluid pressure.

Abstract: An analog fluidic speed sensor including novel structure enhancing the signal-to-noise ratio of the sensor.