A method and apparatus for ranging finding of signal transmitting devices is provided. The method of signal reception is digitally based only and does not require receivers that are analog measurement devices. Ranging can be achieved using a single pulse emitting device operating in range spaced relation with a minimum of a single signal transmitter and a single digital receiver and processing circuitry. In general a plurality of transmitting pulsed emitters may be ranged and positioned virtually simultaneously in 3-dimensions (XYZ coordinates) using a configuration of a plurality of digital receivers arranged in any fixed 3-dimensional configuration. Applications may involve at least one single transmitter to receiver design to determine range, or at least one transmitted reflecting signal off from an object to determine range.

An electronic switch with force feedback function includes a base, an actuating component and a. The actuating component is movably connected to the base, and includes a. The magnetic field generating module is disposed on the base, and provides a magnetic repulsive force to the magnetic unit for force feedback while the actuating component moves close to the base.

A photoelectric switch, including: a main body, an upper cover, an infrared tube, an elastic shading mechanism, a bridge piece, a slidable switch member, a key, a sound mode trigger block, a silent mode trigger block, and an accommodating space. The slidable switch member is transversely slidable between the main body and the upper cover. The handle of the slidable switch member protrudes out of the main body. Both the sound mode trigger block and the silent mode trigger block are up-down movably disposed on the slidable switch member and move along with the slidable switch member. When the slidable switch member is slid to one side, the sound mode trigger block is disposed right beneath the key; and when the slidable switch member is slid to the other side, the silent mode trigger block is disposed right beneath the key.

A photoelectric switch, including: a main body, an upper cover, an infrared tube, an elastic shading mechanism, a bridge piece, a slidable switch member, a key, a sound mode trigger block, a silent mode trigger block, and an accommodating space. The slidable switch member is transversely slidable between the main body and the upper cover. The handle of the slidable switch member protrudes out of the main body. Both the sound mode trigger block and the silent mode trigger block are up-down movably disposed on the slidable switch member and move along with the slidable switch member. When the slidable switch member is slid to one side, the sound mode trigger block is disposed right beneath the key; and when the slidable switch member is slid to the other side, the silent mode trigger block is disposed right beneath the key.

A keyboard with a distance detecting function includes a plurality of keyswitches, and each keyswitch includes a keycap, a base, a supporting component, a recovering component and a distance detecting unit. The base has a guide slot structure. The supporting component has a first end connecting to the keycap, and a second end movably assembled with the guide slot structure. The recovering component is disposed between the supporting component and the guide slot structure. The distance detecting unit is detachably disposed on the base, and adapted to detect a movement of the keycap relative to the base for determining whether the keyswitch is actuated.

A photoelectric switch, including: a base, an infrared tube, a keycap, a balance frame, a resetting mechanism, and a light-blocking member. The light-blocking member is configured to change the propagation direction of light emitted from the infrared tube to allow or block the light propagation in the infrared tube. The infrared tube is disposed on the base. The infrared tube includes a light-emitting end and a light-receiving end. The infrared tube, the balance frame, and the resetting mechanism are disposed beneath and covered by the keycap. In operation, upon being pressed by an external force, the balance frame leads the keycap to move downwards smoothly; the light-blocking member moves upwards or downwards along with the motion of the keycap and the balance frame or the resetting mechanism. The resetting mechanism is configured to reset the keycap or the balance frame.

A shape changeable apparatus according to an embodiment of the present technology includes a space forming section, a fluid controller, a signal emitter, a detector, and a generator. The space forming section forms a space, and includes a deformable member that is arranged in contact with the space. The fluid controller is capable of deforming the member by controlling a flow of fluid with respect to the space. The signal emitter emits a signal into the space. The detector is arranged out of contact with the member within the space, and detects the emitted signal. The generator generates information regarding the deformation of the member on the basis of a result of the detection performed by the detector.

A shape changeable apparatus according to an embodiment of the present technology includes a space forming section, a fluid controller, a signal emitter, a detector, and a generator. The space forming section forms a space, and includes a deformable member that is arranged in contact with the space. The fluid controller is capable of deforming the member by controlling a flow of fluid with respect to the space. The signal emitter emits a signal into the space. The detector is arranged out of contact with the member within the space, and detects the emitted signal. The generator generates information regarding the deformation of the member on the basis of a result of the detection performed by the detector.

An hand-operated safety switch with time delay (1) comprises a switching device (2) adapted to be anchored to a fixed part of the protection and provided with switching means (5) adapted to be connected to a plant to be controlled, an operating device (3) adapted to be anchored to a movable part of the protection for interacting with the switching means (5) upon the closing of the movable part. The switching device (2) comprises a locking mechanism (9) associated with the switching means (5) and adapted to selectively hold/release the operating device (3) and hand-operable unlocking means (10) operatively coupled with the locking mechanism (9) for unlocking the operating device (3) with a predetermined time delay with respect of the switching of the power supply circuit by the switching means (5). The switching device (2) has sensor means (13) operatively coupled with the switching means (5) for modifying their operative condition in function of an inlet signal. The operating device (3) also comprises a transmitter (14) adapted to send a proximity signal to be received as input by the sensor means (13) for controlling the switching means (5) when said transmitter (14) is place at a predetermined minimum distance from the sensor means (13). The locking mechanism (9) also comprises an inner passage (29) adapted to allow the passage of means for connecting the sensor means (13) with the switching means (5) avoiding the interference with the unlocking means (10).

An hand-operated safety switch with time delay (1) comprises a switching device (2) adapted to be anchored to a fixed part of the protection and provided with switching means (5) adapted to be connected to a plant to be controlled, an operating device (3) adapted to be anchored to a movable part of the protection for interacting with the switching means (5) upon the closing of the movable part. The switching device (2) comprises a locking mechanism (9) associated with the switching means (5) and adapted to selectively hold/release the operating device (3) and hand-operable unlocking means (10) operatively coupled with the locking mechanism (9) for unlocking the operating device (3) with a predetermined time delay with respect of the switching of the power supply circuit by the switching means (5). The switching device (2) has sensor means (13) operatively coupled with the switching means (5) for modifying their operative condition in function of an inlet signal. The operating device (3) also comprises a transmitter (14) adapted to send a proximity signal to be received as input by the sensor means (13) for controlling the switching means (5) when said transmitter (14) is place at a predetermined minimum distance from the sensor means (13). The locking mechanism (9) also comprises an inner passage (29) adapted to allow the passage of means for connecting the sensor means (13) with the switching means (5) avoiding the interference with the unlocking means (10).