In one example, we describe a method and system for tables, beds, chairs, cabinets, bags, boxes, or appliances, to find the weight of an object or human conveniently and reliably, using Z-casters. Z-caster is based on Z-numbers, which is a pair of (A,B), where A is the value of the weight (based on and expressed as a Fuzzy parameter/value), and B is the reliability for that (expressed here as a Z-number). The calibration method is also described. Each basic unit has 2 types of sensors: for coarse measurement (just as a switch, with a rough/Fuzzy threshold) and for fine measurement. Many variations, examples, applications, and materials are shown here.

A sensor assembly comprising first, second and third layers of flexible material forming, when superposed, a pressure-sensitive sensor having at least two sensor cells. The first layer comprises first and second electrically conductive regions mechanically connected to each other via an electrically non-conductive region. The second layer comprises a third electrically conductive region. The third electrically conductive region of the second layer overlaps the first and second electrically conductive regions of the first layer. The region of overlap defines an active region of a first and a second sensor cell. The third layer is formed of a conductive elastic material that cooperates under a local mechanical load in the active region with the first and second conductive regions of the first layer so that an electrical resistance between the electrical conductive regions changes in the place of the compressive load. Furthermore, the sensor assembly comprises a fixation adapted to fix the first and the second layers together. The fixation is arranged outside the active region so that the first and third layers lie unloaded on top of each other in the active region and the surfaces of the first and third layers facing each other are substantially free of a fixation.

The disclosure provides a touch sensor unit. A conductive component is arranged between a pair of electrodes which are arranged inside an insulating tube, and the conductive component includes: a body section, which extends in a longitudinal direction of the insulating tube; and a convex section, which is arranged on an outer circumference of the body section, extends along the longitudinal direction of the body section, and sinks into the pair of electrodes. Short circuit or non-short circuit and so on of the electrodes can be detected by detecting the resistance value of the conductive component. Merely by inserting the conductive component into one end in the longitudinal direction of the electrodes, the pair of electrodes are electrically connected, and only the convex section sinks into the pair of electrodes, therefore the insertion load of the conductive component can be reduced, and the terminal treatment can be simplified.

Safety mat for safeguarding an electrically driven installation, comprising a sensor, a rigid supporting body and an evaluation unit. The supporting body has a top side, a rear side and first and second side faces, adjoining the top and rear sides. The sensor has an active surface covering the top side of the supporting body. The rear side has an opening for contacting an evaluation unit arranged in the interior of the supporting body that is configured to provide an output signal depending on the actuation of the sensor. The first side face has a first cavity and the second side face has a second cavity. The rear side has a first and a second cable guide. The first cable guide connects the opening to the first cavity and the second cable guide connects the opening to the second cavity.

Safety mat for safeguarding a technical installation, comprising a sensor, a rigid supporting body and an evaluation unit. The sensor has an active sensor area and a flexible connection region for contacting the sensor area. The flexible connection region is formed at a border of the active sensor area. The supporting body has a base with a top side and a side face which adjoins the said top side. The evaluation unit is arranged in the interior of the supporting body below the active sensor area and is configured to generate an output signal depending on the actuation of the active sensor area. The active sensor area covers the top side of the base of the supporting body completely, and the connection region of the sensor is folded around the side face through 180 and guided into the interior of the supporting body.

An item monitoring system including a bladder including a body with a hollow interior configured to be filled with a fluid is described. The system includes an energy generation mechanism connected to the bladder and including a tube equipped with a wire core or surrounded by a wire coil in fluid communication with the bladder, and a magnetic item movably disposed within the tube. The system includes a light source electrically connected to the energy generation mechanism. Displacement of the fluid from the bladder into the tube moves the magnetic item within the tube, thereby generating an electrical current to emit a light from the light source.

A pressure-sensitive safety device for monitoring a technical installation, includes a sensor having first and second sensor cells, and first, second and third electrodes for making contact with the first and the second sensor cells. A pressure-sensitive material within the first and second sensor cells is configured, under local loading, to change an electrical property of the cells at the site of loading. An evaluation unit provides an output signal depending on an actuation of the first and second sensor cells. The first and second electrodes are connected to the first and second sensor cells, respectively, and the third electrode is connected to both the first and the second sensor cells. The first, second and third electrodes are connected to the evaluation unit by a first sequentialization element, and to a defined first potential by a second sequentialization element.

The present invention relates to a carrier for electrical and/or electronic components, in particular, a printed circuit board, having a broadside for accommodating electrical conductor tracks, and having a narrow side. At least one electrically conductive contact area is provided on the carrier, the contact area, in particular, being used as a fixed contact for an electrical switch. The contact area is arranged on the narrow side.

Safety mat for safeguarding a technical installation, comprising a sensor, a rigid supporting body and an evaluation unit. The sensor has an active sensor area and a flexible connection region for contacting the sensor area. The flexible connection region is formed at a border of the active sensor area. The supporting body has a base with a top side and a side face which adjoins the said top side. The evaluation unit is arranged in the interior of the supporting body below the active sensor area and is configured to generate an output signal depending on the actuation of the active sensor area. The active sensor area covers the top side of the base of the supporting body completely, and the connection region of the sensor is folded around the side face through 180 and guided into the interior of the supporting body.

Safety mat for safeguarding an electrically driven installation, comprising a sensor, a rigid supporting body and an evaluation unit. The supporting body has a top side, a rear side and first and second side faces, adjoining the top and rear sides. The sensor has an active surface covering the top side of the supporting body. The rear side has an opening for contacting an evaluation unit arranged in the interior of the supporting body that is configured to provide an output signal depending on the actuation of the sensor. The first side face has a first cavity and the second side face has a second cavity. The rear side has a first and a second cable guide. The first cable guide connects the opening to the first cavity and the second cable guide connects the opening to the second cavity.