Abstract:
A detection device according to a first aspect includes a first arm, a second arm, and a detection unit having two states as output. The first arm and the second arm each have a corresponding pressure receiving portion pushed by one of detection targets and are respectively rotatable about rotation axes as rotation centers along the same straight line such that the first arm and the second arm have different positions when the corresponding pressure receiving portion is pushed and not pushed by one of the detection targets. The output of the detection unit is switched to one of the two states in accordance with the positions of the arms.
Abstract:
With a measurement method and a measurement device for the measurement of a path covered by a first object (1) in relation to a second object (2), a measurement body (3) is deformed by a relative movement of the objects and at least a first deformation sensor (4) assigned to the measurement body (3) converts the measurement body (3) deformation into a measurement signal. The measurement signal is converted by an evaluation device (20) into information on the path covered. In order to increase the precision and measurement speed in a way that is simple structurally and saves space, the measurement signal is emitted when an area of the measurement body (3) is stretched along the longitudinal axis (6) of the measurement body (3) and a further area is compressed along the longitudinal axis (6) of the measurement body (3).
Abstract:
A load suspension and weighing system for a removable reservoir unit of a portable dialysis machine includes a centrally located flexure assembly. The flexure assembly includes magnets and a number of flexure rings which allow for movement of the magnets about a fixed circuit board. Sensors in the circuit board sense changes in the magnetic field as the magnets move in relation to the circuit board. The magnetic field changes produce a voltage output which is used by a processor to generate weight calculations. The top of the flexure assembly is attached to the interior of the dialysis machine. The entirety of the reservoir unit is suspended by a first internal frame that is attached to the bottom of the flexure assembly. Having a single flexure assembly positioned above the reservoir unit provides more accurate weight measurements while also preventing damage to the assembly from water spillage.
Abstract:
The sensor is adapted for sensing relative displacement of a relatively movable body and is advantageously sensitive to displacements of the order of or less than 1 mm or is sensitive to displacements caused by forces or pressures or changes in force or pressure of the order of or less than 10 millibar. The sensor (1) comprises an elongate member (16) longitudinally slidable in a housing (33) in dependence on the relative displacement of the body (10). The elongate member has a longitudinal engagement surface provided for example with teeth (18) which engage with teeth provided on the periphery of a rotatable member (19) mounted for rotation in the housing. The rotatable member is associated with an arm (21) which may carry an indicator (23) at its end which is movable with rotation of the rotatable member over a scale (22). The assembly comprising the elongate member, the rotatable member and the arm is arranged to be substantially balanced about the axis of the rotatable member with a slight resultant force on the elongate member tending to move it in the direction of the body, the resultant force being less than the force on the body causing the displacement to be sensed by the sensor. For this purpose, the assembly may include a spring (25) acting for example on the rotatable member about its axis for counterbalancing any imbalance in the moments of the elongate member and arm about the axis of the rotatable member.
Abstract:
A centrifuge calibration apparatus (10) configured to be spun in a centrifuge and to provide an indication (25) of performance of the centrifuge. Spinning of the apparatus in the centrifuge causes a piston (14) to exert centrifugal force to compress a spring (22), thereby generating relative movement between a pointer (24) and a scale (26). The scale may be calibrated in units of G-force or RPM. A ratchet mechanism (40) holds the pointer at its most displaced position upon completion of the spinning and removal of the apparatus from the centrifuge.
Abstract:
With a measurement method and a measurement device for the measurement of a path covered by a first object (1) in relation to a second object (2), a measurement body (3) is deformed by a relative movement of the objects and at least a first deformation sensor (4) assigned to the measurement body (3) converts the measurement body (3) deformation into a measurement signal. The measurement signal is converted by an evaluation device (20) into information on the path covered. In order to increase the precision and measurement speed in a way that is simple structurally and saves space, the measurement signal is emitted when an area of the measurement body (3) is stretched along the longitudinal axis (6) of the measurement body (3) and a further area is compressed along the longitudinal axis (6) of the measurement body (3).
Abstract:
A lifting device that has a carriage supported by a chain which passes over a sprocket-wheel disposed to rotate about an axis and features an equalizer system that reduces variations in the measurement, by a load cell, of a load supported by the carriage. To further enhance the accuracy of the measurement, the load cell is designed to accurately measure the load placed thereon independent of the position of the load on the cell. The equalizer system consists of providing the chain and the sprocket-wheel with the dimensions necessary so that each link of the chain subtends a predetermined portion of the sprocket-wheel's circumference.
Abstract:
A robot includes a rail system, a body structure coupled to the rail system, a first arm coupled to a first side of the body structure, one or more first arm actuators providing the first arm with multiple degrees of freedom, a second arm coupled to a second side of the body structure, one or more second arm actuators providing the second arm with multiple degrees of freedom, a lift actuator operable to move the body structure along the rail system, and a tilt structure coupled to the body structure. The first arm actuators and the second arm actuators are operable to wrap the first arm and the second arm around an object and hold the object against the body structure. The tilt structure is operable to tilt the body structure. The lift actuator is operable to move the body structure such that the object is lifted.