A calibration system for induction keys includes a signal source and a computing device. The signal source is configured to generate a low frequency (LF) signal and a magnetic field signal at intervals. The computing device is configured to receive the magnetic field signal transmitted by an induction key when the induction key senses the LF signal. The computing device is configured to obtain a magnetic field strength from the magnetic field signal, and then comparing the magnetic field strength with a pre-stored standard strength of the magnetic field to achieve an offset. The computing device sends the offset value to the induction key and enables the induction key to get a calibrated strength value of the magnetic field according to the offset value. This disclosure further provided an induction key and a calibration method.

An operation detection device for a key operation of a keyboard device includes a conductive unit configured to be disposed on each of keys, a substrate configured to be disposed facing each of the keys in a pressing direction of the keys. The substrate is provided with a sensor including at least first and second coils, the sensor being configured to be disposed spaced from one key so that at least one of the first or second coil outputs a signal corresponding to a distance between the one key and the respective sensor. The operation detection device includes a detection unit configured to detect a displacement of the one key in at least one of a yaw direction or a roll direction based on signals output from the first and second coils during a key pressing stroke of the one key.

A dual touch sensor with XY-position and Z-force sensing, such as for implementing a touch button, includes a touch sensor assembly with: (a) an XY-position sensor (such as capacitive, single ended or differential) including an XY electrode disposed at the backside of the touch surface opposite the button area to define an XY sensing area corresponding to the button area, the XY-position sensor to sense a touch within the XY sensing area, as a button-touch event; and (b) a Z-force sensor (such as inductive or capacitive) including a Z-electrode to sense touch-pressure deflection of the touch surface, including to sense a touch-pressure deflection that exceeds a button-press threshold as a button-press event. Sensor electronics coupled to the XY-position sensor and the Z-force sensor detects, as a button touch-press condition, the capacitive XY-position sensor sensing a button-touch event, substantially contemporaneous with the Z-Force sensor sensing a button-press event.

An apparatus for processing rotor movement information includes a processor configured to: receive movement information of a rotor disposed on one surface of an electronic device and having a rotation axis formed in a direction of the electronic device; receive touch information of a sensor configured to sense a touch on another surface of the electronic device; and produce operating information of the electronic device based on the movement information of the rotor. The operating information of the electronic device has variable correlation of the operating information to the movement information, in accordance with the touch information.

A safety switch with detection of the end-stroke of the unlocking mechanism adapted to supervise a safety access of a machine or industrial plant comprises a switching device (2) adapted to be associated to the fixed part of an access to be supervised and having switching means (5) adapted to be operatively connected to one or more control and/or service circuits of the plant for the control thereof, an operating device (3) associated to a movable part of the access to interact with the switching means (5) at the time of opening/closing of the access for opening/closing of one or more circuits, an unlocking mechanism (13) housed in the switching device (2) and having an unlocking pin (14) adapted to translate with maximum predetermined stroke from a blocking position of the access to an unlocked position to determine the opening of the switching means (5), means (17) for the detection of the stroke of the unlocking pin (14) comprising a first detector (18) adapted to detect the start of the stroke of the unlocking pin (14) and a second detector (19) adapted to detect the end of the stroke of the unlocking pin (14).

A safety switch with detection of the end-stroke of the unlocking mechanism adapted to supervise a safety access of a machine or industrial plant comprises a switching device (2) adapted to be associated to the fixed part of an access to be supervised and having switching means (5) adapted to be operatively connected to one or more control and/or service circuits of the plant for the control thereof, an operating device (3) associated to a movable part of the access to interact with the switching means (5) at the time of opening/closing of the access for opening/closing of one or more circuits, an unlocking mechanism (13) housed in the switching device (2) and having an unlocking pin (14) adapted to translate with maximum predetermined stroke from a blocking position of the access to an unlocked position to determine the opening of the switching means (5), means (17) for the detection of the stroke of the unlocking pin (14) comprising a first detector (18) adapted to detect the start of the stroke of the unlocking pin (14) and a second detector (19) adapted to detect the end of the stroke of the unlocking pin (14).

An apparatus for human-computer interaction and a vehicle including the same are provided. The apparatus includes a first magnetic component, a control module, a data transmission module and a second magnetic component. The first magnetic component has a preset surface area and is fixed on a device where the apparatus is located. The control module generates a control instruction. The data transmission module sends the control instruction to a main controller of the device. The second magnetic component is connected to the control module and the data transmission module, and attracts the control module and the data transmission module to the first magnetic component, where an attraction position is changeable. The user can control the second magnetic component to move to a suitable position on a surface of the first magnetic component, avoiding usage barriers caused by the user's inaccessibility of the apparatus for human-computer interaction.

Self-testing proximity testing systems and corresponding methods are discussed herein and can include a proximity probe and controller in electrical communication via a cable. A self-testing subsystem can be in communication with the controller and configured to determine whether proximity probes and cables assembled with a controller are compatible or incompatible. The self-testing subsystem can place a known impedance in electrical communication with the controller, modifying a proximity signal output by the controller. When the modified proximity signal differs from a predicted proximity signal by greater than or equal to a threshold amount, the self-testing subsystem can output a first indication indicating that incompatible proximity probes and cables are assembled with a controller. When the modified proximity signal differs from a predicted proximity signal by less than the threshold amount, the self-testing subsystem can output a second indication indicating that compatible proximity probes and cables are assembled with a controller.

A touch sensing device includes: a first touch sensing unit including a first sensing electrode and a first sensing inductor electrically connected to each other, wherein capacitance of the first touch sensing unit varies depending on parasitic capacitance formed between the first sensing electrode and a human body according to a contact of the human body; a first force sensing unit including a first sensing coil spaced apart from an internal side surface of a frame, wherein inductance of the first force sensing unit varies depending on a change in distance between the first sensing coil and the frame according to a pressing touch; and a circuit unit configured to detect whether a touch of the human body is input, based on variations in the capacitance of the first touch sensing unit and variations in the inductance with the force sensing unit.

A touch sensing device configured to be installed in an electronic device, the electronic device including a side unit and a touch switch unit, the side unit including a non-conductive cover and a conductive frame coupled to the cover, the touch switch unit including a first touch member that is a portion of the cover, the touch sensing device including a first sensing electrode configured to be disposed inside the electronic device near the first touch member; a first sensing coil configured to be disposed inside the electronic device; and a first connection wire including one end connected to the first sensing electrode and another end connected to the first sensing coil, thereby electrically connecting the first sensing electrode to the first sensing coil.