Abstract: A magnetic sensing system 10 according to the present invention is provided with a sensing device 11 that generates an electrical signal according to the strength of a magnetic field that changes in response to the action of an external force, and a detection device 12 that detects a physical quantity associated with the action of the external force from a change in the magnetic field based on the electrical signal from the sensing device 11. The sensing device 11 includes magnetic field generation means 15 and 18 that generate a desired measurement magnetic field of different strengths from a site that is displaced by the action of the external force, and a magnetic field measurement means 19 that measures the strength of a surrounding magnetic field including the measurement magnetic field.

Abstract: A detection device 12 according to the present invention is provided with a calibration means 14 that specifies a relational expression between an output value from a force sensor 11 when an external force is applied and the magnitude of the external force. The relational expression contains a formula that includes a predetermined parameter and with which it is possible to calculate, according to an offset value obtained as the output value when the sensor is free of contact and not acted upon by the external force, the magnitude of the external force from the actual output value. The calibration means 14 is provided with a function derivation unit 17 that derives a function for calculating the parameter value from the offset value, and a parameter value determination unit 18 that uses the function to determine the parameter value.

Abstract: A magnetic sensing system 10 according to the present invention is provided with a sensing device 11 that generates an electrical signal according to the strength of a magnetic field that changes in response to the action of an external force, and a detection device 12 that detects a physical quantity associated with the action of the external force from a change in the magnetic field based on the electrical signal from the sensing device 11. The sensing device 11 includes magnetic field generation means 15 and 18 that generate a desired measurement magnetic field of different strengths from a site that is displaced by the action of the external force, and a magnetic field measurement means 19 that measures the strength of a surrounding magnetic field including the measurement magnetic field.

Abstract: The sensor detects a proximity situation and applied external force in the same installation area while minimizing elements and boards included in a sensor. A proximity and tactile sensor 10 includes a body unit 11 to be attached to a detection target portion and a detection unit 12 configured to obtain approaching distance of an object to the body unit 11 and magnitude of external force. The body unit 11 includes an electrode 14 formed by a rigid body with conductivity, a magnetic body 15 integrally attached to the electrode 14, a foam 16 disposed outside the electrode 14 and magnetic body 15 and composed of an elastic body, and a magnetic sensor 17 configured to detect change in magnetic field from the magnetic body 15. The detection unit 12 includes a proximity sensing unit 22 and an external force sensing unit 23.