273results about "Resistors adjusted by mechanical pressure/force" patented technology

The cost and complexity of an electronic pressure sensitive transducer are decreased by constructing such a transducer directly on a printed circuit board containing support electronics. Conductive traces are formed on the printed circuit board to define a contact area. A flexible substrate having an inner surface is positioned over the contact area. An adhesive spacer, substantially surrounding the contact area, attaches the flexible substrate to the printed circuit board. At least one resistive layer is deposited on the flexible substrate inner surface. In use, the resistive layer contacts at least two conductive traces in response to pressure applied to the flexible substrate to produce an electrical signal indicative of applied pressure.

A film pressure sensitive resistor comprises conductive particles such as carbon black, a binder such as polyester resin, and spherical elastic particles having an average particle diameter of 2 mum to 50 mum, and further has average surface roughness of 0.1 mum to 3 mum, a peak-to-peak concavo-convex period of 10 mum to 1000 mum, and an elastic modulus of 800 MPa to 8000 MPa so as to have reliable quality, and excellent environmental resistance, and durability to repeated use (depressing).

A seat weight sensor for detecting the weight of a seat occupant. The weight sensor has a case mounted between a seat pan and a seat member. One or more strain gauge resistors are mounted in the case. The resistors generate an electrical signal in response to the case being stressed by the weight of the seat occupant. The electrical signal changes as a function of the weight of the occupant. A fastener passes through the seat member, the case, and the seat pan. The fastener secures the sensor between the seat pan and the seat member. The case is adapted to transfer to the strain gage resistor the weight of the occupant up to pre-determined level. The case prevents the strain gage from receiving weight beyond that of the pre-determined level such that the sensor is not damaged by an excessive load. The case also allows the weight sensor to be insensitive to off-axis forces that might otherwise contribute to inaccurate weight readings.

A bend-detecting (bending) sensor is provided, including a flexible substrate, at least a pair of electrode patterns spaced apart from each other provided on the flexible substrate, and a paste layer containing conductive particles. The paste layer is coated onto the flexible substrate where the electrode patterns are formed, such that when the flexible substrate is bent, the density of the conductive particles between the electrode patterns changes and an electric resistance between the electrode patterns also changes, thereby sensing deformation of the flexible substrate, and eventually, a target to which the flexible display element or the flexible substrate is attached. When the bending sensor is applied to the flexible display device, the electrode patterns and the paste layer may be formed on the flexible substrate which is to form the flexible display element, thus forming a bending sensing structure with a thickness of the flexible display element or less.

An input device that is capable of sensing how hard a user is pressing when contacted is disclosed. The input device includes a pressure sensing unit generating an electrical signal in accordance with pressure applied on one surface of the pressure sensing unit and a fixed resistance making a parallel electrical connection with the pressure sensing unit. Thus, not only can the input device receive a form of information that is changed proportionally in accordance with the pressure applied by the user, but the deviation in electrical characteristics that may occur during the manufacturing of different products can also be reduced. Also, by adjusting the resistance value of the fixed resistance, the sum of the resistance values by the parallel connection between the fixed resistance and the pressure sensitive resistance can be adjusted so that the electrical signal generated by the input device through pressing can be adjusted.

A force sensing resistor (FSR) includes a substrate having separated electrically conductive traces and another substrate having a resistive layer in which the substrates are subjected to a biasing force such that the substrates contact one another with the resistive layer electrically connecting the traces with a resistance inversely dependent on the biasing force. Upon an external force applied towards a substrate, the substrates contact one another with a total force which is the sum of the forces with the resistive layer electrically connecting the traces with a resistance inversely dependent on the total force. An FSR output which is a function of the resistance is measured. Whether a change in magnitude of the FSR output during a time interval is greater than a threshold is determined. A touch applied on the FSR is detected during the time interval if the change is greater than the threshold.

The present invention relates to a detector constructed from electrically conducting fabric and configured to present a varying electrical characteristic in response to a mechanical interaction. The detector comprises a first conducting layer (401) which is displaced from a second conducting layer (402) such that conduction between the layers results when the layers are mechanically forced together. In addition, the first of the layers has a plurality of lengths of conductive yarn and a plurality of lengths of non-conductive yarn machined therein, such that at least one length of conductive yarn is electrically isolated from another of the lengths of conductive yarn and the conducting yarns in the first of the layers are electrically grouped to define a plurality of identifiable rows. Each identifiable row has a respective electrical conductor; and define specific regions of the detector.

A first resistor layer is formed on the lower surface of a base in film form, and at the same time, a second resistor layer in which particles of different particle diameters are dispersed is formed and layered on the lower surface of the first resistor layer, and thus, a pressure sensitive conductive sheet is formed. In this configuration, the second resistor layer in uneven form makes contact with the fixed contacts in accordance with a pressing force so that electrical connection is made via the second resistor layer and the first resistor layer, and therefore, a thin panel switch with little fluctuation in the resistance value resulting from repeated operation where a stable resistance value can be gained can be realized.

There is provided herein a sensor for use in connection with an electronic patient monitor, wherein the sensor preferably uses a linearly configured resistive ladder with spaced-apart resistors as a means of determining at least approximately a location of the patient on the sensor as well as an approximate length of the sensor which is compressed by the patient. By continuously determining both of these quantities over time it is possible to track the patient's movement and determine to what extent the patient needs to be manually turned and / or the extent to which a next-scheduled turn can be skipped.

The card (1), such as a credit card or other similar card, comprises at least a RFID chip module (3) and an antenna (4). The antenna (4) is interrupted in an interruption zone with two separated contact ends (5′,5″) and a contacting material (10) is placed in said interruption zone in order to enable a contact between said two separated ends (5′,5″). Said contacting material (10) becomes conductive under pressure so that the antenna is functional only when the contacting material (10) is put under pressure by a user.

The car power source apparatus is provided with a plurality of batteries, a temperature detection circuit, and an abnormal temperature rise prevention circuit. The temperature detection circuit detects electrical resistance change of a plurality of temperature sensors via a voltage conversion circuit, converts voltage conversion circuit output voltage into a digital signal via an A / D converter, and inputs that signal into a control circuit as a temperature signal. The abnormal temperature rise prevention circuit is provided with comparators to compare output voltage from the voltage conversion circuit of the temperature detection circuit with a reference voltage and output an abnormal temperature signal if battery temperature rises to a specified temperature, and a forced current cut-off circuit connected to the comparators to detect a comparator abnormal temperature signal and cut-off battery current. The control circuit and the abnormal temperature rise prevention circuit monitor battery temperature, and cut-off battery current.

A multi operating electronic component includes a case, a rotary member, a cover member, an operating knob and a rotationally actuated component. In the central hole of the rotary member rotatably supported by the case, a center leg of the operating knob and an engaging portion provided around the leg are inserted in such a manner as to be movable vertically and tiltable. A pressing central switch or pressing peripheral switches provided in the case are operated by the operating knob. The rotationally actuated component is at least partly formed in the case and is rotated together with the rotary member by the operating knob.

A pressure transducer assembly including: a pressure sensor header; a transducer assembly member; and a joining arrangement disposed at an interface of the header and the transducer assembly member, for joining the header with the transducer assembly member, the joining arrangement including: a recessed female joining element formed in one of the header and the transducer assembly member; and a protruding male joining element formed on the other of the header and the transducer assembly member, the male joining element received in the female joining element.

A high-sensitivity pressure conduction sensor is presented. The present invention includes a pair of locally resilient conductive layers and a locally resilient pressure conduction composite disposed between and contacting both conductive layers. Alternate embodiments include at least three locally resilient conductive layers and at least two locally resilient pressure conduction composites, each having a critical percolation threshold. Each composite is disposed between and contacting two conductive layers in a multi-layer fashion. Other embodiments include a locally resilient pressure conduction composite, a flexible substrate completely surrounding the composite so as to seal it therein, and a pair of electrical leads contacting the composite and terminating outside of the flexible substrate. Pressure conduction composites are composed of a plurality of conductive particles electrically isolated within a non-conductive matrix. Conductive particles are loaded so as to have a volume fraction approaching the critical percolation threshold of the material system and exhibit a conductance that greatly increases with pressure. Sensors may be arranged to form one or more arrays including planar and conformal configurations. The present invention has immediate application in keyboards, intrusion systems, control systems, submarines, ships, sonobuoys, doors, and switches.

A sensor integrated on a semiconductor device (1), in particular a flow sensor, comprises a measuring element (2) on a membrane (5). In order to prevent a buckling of the membrane (5) a tensile coating (9) is applied. The coating covers the membrane, but it preferably leaves all the active electronic components integrated on the semiconductor chip (1) uncovered, such that their electrical properties are not affected.

A force sensing resistor (FSR) includes a substrate having separated electrically conductive traces and another substrate having a resistive layer in which the substrates are subjected to a biasing force such that the substrates contact one another with the resistive layer electrically connecting the traces with a resistance inversely dependent on the biasing force. Upon an external force applied towards a substrate, the substrates contact one another with a total force which is the sum of the forces with the resistive layer electrically connecting the traces with a resistance inversely dependent on the total force. An FSR output which is a function of the resistance is measured. Whether a change in magnitude of the FSR output during a time interval is greater than a threshold is determined. A touch applied on the FSR is detected during the time interval if the change is greater than the threshold.

It is an object to provide a push-button switch member (1), by utilizing light energy with out any loss for back-lightening on a display section, capable of realizing the back-lightening to the display section with even luminance while suppressing power consumption and having high visibility and thin thickness, the push-button switch member comprising a key-top portion (3) and a cover base member provided with the key top portion at a predetermined portion; thereof and adapted to be mounted to the circuit board (5), the key-top portion (3) being provided with a display section (2) displaying a switching function and an area emitter (4) integrally formed with the display section, wherein the area emitter member (4) is provided with a light emitting layer (13) disposed between a base electrode (14), and a transparent electrode (10) disposed so as to oppose to the base electrode (14) and the transparent electrode (10) arranged to be contacted to the display section (2) is formed of a transparent conductive polymer.

The present invention relates to a structure for attaching tactile sensors to a curved surface, comprising a sensor fixing unit configured to have at least part of one surface curved and to have a plurality of sensor insertion grooves, crossing each other, formed in the one surface in a matrix form; tactile sensor units formed in a matrix form, inserted into the respective sensor insertion grooves, and configured to detect external force; sealing units configured to seal the respective sensor insertion grooves; and a support unit configured to come in contact with one face of the sealing units or the sensor fixing units and to support the sensor fixing units. Accordingly, the tactile sensors can be easily attached to a curved surface, and mass production is possible.

A capacitive humidity sensor includes a printed circuit board having an insulating substrate on which a circuit section is formed, a pair of electrodes formed on a surface of the insulating substrate to be opposite from each other with a space, and a humidity sensitive layer formed on the insulating substrate to cover the electrodes and the surface of the insulating substrate between the pair of electrodes. The relative permittivity of the humidity sensitive layer changes in response to humidity, and the circuit section performs a signal processing of a capacitance change between the electrodes. Furthermore, the electrodes and the circuit section are electrically connected through a wiring section formed in the insulating substrate.

Disclosed is a pressure-sensing type touch panel including a plurality of sheets laminated to have a one-sheet structure, the touch panel being bonded to a rear surface of a flexible display. The pressure-sensing type touch panel has flexibility and stably recognizes the touch of an object even when incurring such deformations as bending, rolling or folding.

A touch panel apparatus includes a touch panel for recognizing a contact position and a touch panel controller for computing a coordinate value corresponding to the contact position on the touch panel, wherein an activation force is set to a value between 80 g˜150 g, and the touch panel controller compensates for an error of the coordinate value due to double touching of the touch panel.