High temperature switch apparatus are disclosed. An example apparatus includes a first plunger housing having a first cavity and a second plunger housing having a second cavity. The first plunger housing and the second plunger housing to couple to enclose a plunger assembly of a proximity switch. A first contact housing defines a third cavity and a second contact housing defines a fourth cavity. At least a portion of the third cavity and at least a portion of the fourth cavity are complementary to a shape of an outer surface of the first plunger housing and the second plunger housing.

A switching device includes: a header, a first magnet and a second magnet, a first magnetic sensing element and a second magnetic sensing element, a first inductor and a second inductor, a printed circuit board including an upper face on which are mounted upfront the first magnetic sensing element and the second magnetic sensing element and a lower face on which are mounted upfront the first inductor and the second inductor, a first microcontroller unit and a second microcontroller unit, wherein the first microcontroller unit and the second microcontroller unit are configured to send a stimulus signal respectively to the second conductor and to the first conductor, wherein the first microcontroller unit is configured to read a response produced by the first magnetic sensing element, the response corresponding to a magnetic field produced by the first inductor having received the stimulus signal sent by the second microcontroller unit, wherein the second microcontroller unit is configured to read a response produced by the second magnetic sensing element, the response corresponding to a magnetic field produced by the second inductor having received the stimulus signal sent by the first microcontroller unit, wherein the first microcontroller unit and the second microcontroller unit are configured to determine a state of the switching device based on the read responses.

A circuit for a smart lock includes a state detection unit, a main control chip and a motor driving unit, the state detection unit includes optocoupler sensors U21, U31 and a Hall sensor; the optocoupler sensor U21 is configured to form a first in-position signal, the optocoupler sensor U31 is configured to form a second in-position signal, the Hall sensor is configured to detect whether the state of the lock body is unlocked in position so as to form an auxiliary signal; the main control chip is configured to output a control signal according to the first and second in-position signals and the auxiliary signal; and the motor driving unit is configured to drive the motor to rotate forward or reverse or stop rotating according to the control signal.

A magnetic sensor device includes a switching region defined by a switching range and a variation range, the switching range being set in a stroke direction of a magnet generating a radial magnetic field and defined by a start position and an end position for switching of the state, and the variation range being set in a direction intersecting the stroke direction and being a range of variation in the position of the magnet, and a magnetic sensor including plural first divided elements that are formed by dividing a first circular magneto-resistive element and are consecutively rotated and rearranged around the switching region such that change in a magnetoresistance value due to the magnetic field of the magnet in the switching region increases from the start position to the end position.

A magnetic sensor device includes a switching region defined by a switching range and a variation range, the switching range being set in a stroke direction of a magnet generating a radial magnetic field and defined by a start position and an end position for switching of the state, and the variation range being set in a direction intersecting the stroke direction and being a range of variation in the position of the magnet, and a magnetic sensor including plural first divided elements that are formed by dividing a first circular magneto-resistive element and are consecutively rotated and rearranged around the switching region such that change in a magnetoresistance value due to the magnetic field of the magnet in the switching region increases from the start position to the end position.

A push-button structure includes: a mounting body, an outer surface of the mounting body being at least partially recessed inward to form a blind hole; a first magnetic component, located in the blind hole; a second magnetic component, located on an inner surface of the mounting body and distributed symmetrically with the first magnetic component on an opposite side of the mounting body, for generating, based on a distance to the first magnetic component, a magnetic signal corresponding to the distance; and an elastic block, located in the blind hole and having a first form without an external action and a second form under an external action.

A programmable or configurable non-contact solid state switch device and method are provided for emulating a high reliability switch. The switch device senses position information related to a switch and is calibrated using a learning operation to learn position information of mechanical features of the switch and to map the positions of these features. Electrical outputs or functions are assigned to the mapped positions and stored such that the switch device generates the outputs when their corresponding positions are sensed. A switch device is uniquely configured to the mechanical system in which it operates.

A push switch includes an operating part configured to be pressed in a first direction, an elastic holding member configured to hold the operating part such that the operating part can vibrate in a second direction orthogonal to the first direction, a frame member configured to hold the elastic holding member such that the elastic holding member can vibrate in the second direction, and a vibrator configured to generate a vibration in the second direction, the vibrator being provided in the elastic holding member.

A push switch includes an operating part configured to be pressed in a first direction, an elastic holding member configured to hold the operating part such that the operating part can vibrate in a second direction orthogonal to the first direction, a frame member configured to hold the elastic holding member such that the elastic holding member can vibrate in the second direction, and a vibrator configured to generate a vibration in the second direction, the vibrator being provided in the elastic holding member.

A system may include a sensor configured to output a sensor signal indicative of a distance between the sensor and a mechanical member associated with the sensor, a measurement circuit communicatively coupled to the sensor and configured to determine a physical force interaction with the mechanical member based on the sensor signal, and a compensator configured to monitor the sensor signal and to apply a compensation factor to the sensor signal to compensate for changes to properties of the sensor based on at least one of changes in a distance between the sensor and the mechanical member and changes in a temperature associated with the sensor.