A rotary encoder includes a substrate, two or more switches disposed on the substrate, a mechanical wave generator, and a controller. The mechanical wave generator is disposed proximate to the substrate. The substrate and the mechanical wave generator are adapted to rotate relative to each other about a central axis. The mechanical wave generator has a profile shape that repeats circumferentially about the central axis. The profile shape has ridges and valleys that engage the two or more switches to activate and deactivate the two or more switches as the substrate and the mechanical wave generator rotate relative to each other. The controller is electrically coupled to the two or more switches to track activations of the two or more switches and digitally encode a rotational position of the substrate relative to the wave generator based upon the activations.

A rotary encoder includes a substrate, two or more switches disposed on the substrate, a mechanical wave generator, and a controller. The mechanical wave generator is disposed proximate to the substrate. The substrate and the mechanical wave generator are adapted to rotate relative to each other about a central axis. The mechanical wave generator has a profile shape that repeats circumferentially about the central axis. The profile shape has ridges and valleys that engage the two or more switches to activate and deactivate the two or more switches as the substrate and the mechanical wave generator rotate relative to each other. The controller is electrically coupled to the two or more switches to track activations of the two or more switches and digitally encode a rotational position of the substrate relative to the wave generator based upon the activations.

A rotary encoder includes a shaft and an encoder mechanism that holds the shaft in a rotatably inserted state and detects a rotation direction and a rotation angle of the shaft. The encoder mechanism includes a substrate that rotatably holds the shaft, an insulator portion and a resistor portion provided on one surface of the substrate and alternately provided in the rotation direction of the shaft, a rotor attached to the shaft so as to be integrally rotatable with the shaft, and a slider that is attached to the rotor and alternately slidably contacts the insulator portion and the resistor portion by rotation of the shaft. The insulator portion includes a base material made of a resin, spherical silica, and a fluororesin filler.

An array of antennas form a sensor device. Some of the array of antennas function as receivers and some of the array of antennas function as transmitters. Each of the transmitters may transmit a unique frequency orthogonal signal that may be received at the receivers. Measurements of the received signal are then used to determine activity within field lines.

An array of antennas form a sensor device. Some of the array of antennas function as receivers and some of the array of antennas function as transmitters. Each of the transmitters may transmit a unique frequency orthogonal signal that may be received at the receivers. Measurements of the received signal are then used to determine activity within field lines.

A drug delivery device comprising; a housing; a cylindrical member configured to be rotatably supported inside the housing, wherein the outer surface of the cylindrical member is provided with at least first and second tracks together forming an encoder, each track comprising conductive segments and non-conductive segments; and at least first and second groups of contacts configured to engage the first and second tracks respectively at predetermined intervals along the length of the track.

A rotary sensor assembly, comprising a first sensor part with a plurality of position sensor segments, and a second sensor part with a grounded contact in contact with a position sensor segment. For a current incremental rotational position a contact is in contact with an un-powered current-position sensor segment, with the neighbour segments being in a powered state. When the contact is rotated to a powered next-position position sensor segment, the next-position sensor segment becomes a new current-position sensor segment. Electronic circuitry is adapted to detect that the new current-position sensor segment is grounded and that the first and second sensor parts thereby have been rotated one increment relative to each other, and subsequently change the state of the former current-position sensor segment from un-powered to powered and the state of the new current-position sensor segment from powered to un-powered.

A rotary sensor assembly, comprising a first sensor part with a plurality of position sensor segments, and a second sensor part with a grounded contact in contact with a position sensor segment. For a current incremental rotational position a contact is in contact with an un-powered current-position sensor segment, with the neighbour segments being in a powered state. When the contact is rotated to a powered next-position position sensor segment, the next-position sensor segment becomes a new current-position sensor segment. Electronic circuitry is adapted to detect that the new current-position sensor segment is grounded and that the first and second sensor parts thereby have been rotated one increment relative to each other, and subsequently change the state of the former current-position sensor segment from un-powered to powered and the state of the new current-position sensor segment from powered to un-powered.

The present invention provides a mouse device, including a body, a circuit board, and a plurality of weight sensing units. The weight sensing units are configured to measure weights of counterweight blocks accommodated in the plurality of accommodating parts of the body. A processing unit of the circuit board is connected to the weight sensing units and is configured to generate and output a weight sensing signal according to the measurement result of the weight sensing units.

The present invention provides a mouse device, including a body, a circuit board, and a plurality of weight sensing units. The weight sensing units are configured to measure weights of counterweight blocks accommodated in the plurality of accommodating parts of the body. A processing unit of the circuit board is connected to the weight sensing units and is configured to generate and output a weight sensing signal according to the measurement result of the weight sensing units.