11 results about "Force-sensing resistor" patented technology

A sensor device 11 for a magnetic filter 10, converting an analogue signal therefrom to find and relay a filter status by interrogation of an electrically connected reference data library providing the correlation therebetween. A temperature sensor (50, fig 6) may be included. A user interface and LED display may be included. The filter may have an elongate magnetic core 12. The force sensing resistor may comprise a multilayer assembly made of at least two layers of flexible printed piezoelectric ink (31, 32a, 32b, 33, fig 4). The change in a force responsive sensor 25 may be measured. A time period remaining for saturation and / or the saturation point may be predicted via a counting process and / or a machine self-learning configuration. The system is designed to provide an indication of the status of contaminant capture in a magnetic filtration device with a sensor and data processing electronic components to calculate real-time a requirement for purging / cleaning of a filtration device prior to and / or at saturation.

A system and method to alert a driver of a vehicle as a safety system for vehicle includes a force sensing resistor and a galvanic skin response sensor coupled to the steering wheel, and an alarm notification module. The alert system further includes a processing unit with a circuitry including instructions to receive initial conductance data and real-time conductance data from the galvanic skin response sensor, and real-time force data from the force sensing resistor; generate a mean data from the initial conductance data; apply an averaging filter to the real-time conductance data to generate filtered real-time conductance data; generate a first comparison between the real-time force data and a predefined threshold; generate a second comparison between the filtered real-time conductance data and the mean data; and activate the alarm notification module of the vehicle based on at least one of the first comparison and the second comparison.

An electronic keyboard module includes a keyboard bracket, a keyboard, a conductive film and a force sensing resistor circuit board. The keyboard includes plural keys and key height-limited posts disposed on lower surfaces of the keys. The conductive film includes an insulation layer and plural conductive regions. The conductive regions are spaced apart from each other and disposed on the insulation layer, and the insulation layer is located between the key height-limited posts and the conductive regions. The force sensing resistor circuit board includes plural electrode units disposed under the conductive regions. The conductive film is located between the keyboard and the force sensing resistor circuit board. When at least one of the keys is under a pressed state, the key height-limited post presses the conductive film, so that the conductive region corresponding to the key touches and is electrically connected to the electrode unit.

The invention relates to a pressure sensor, a pressure detection method and a preparation method of the pressure sensor. The pressure sensor comprises a chip body and a plurality of force sensing resistors. The plurality of force sensitive resistors form two Wheatstone bridge circuits; wherein at least one of the two Wheatstone bridge circuits is a Wheatstone full bridge; the two Wheatstone bridge circuits are arranged on the chip body according to stress distribution on the surface of the chip body; the two Wheatstone bridge circuits comprise input pins and output pins; the output pins of the two Wheatstone bridge circuits serve as the output pins of the pressure sensor and output a first voltage and a second voltage respectively. The outputs of the two Wheatstone bridges are used as the output of the pressure sensor, so that not only can the pressure applied to the measured curved surface be obtained, but also the curvature of the curved surface can be obtained, and therefore, the accuracy of current pressure detection of the pressure position to be detected is higher.

A surgical robotic arm includes a first link and a second link, wherein at least one of the first link or second link is movable relative to each other. The surgical robotic arm also includes a sensor assembly coupled to at least one of the first link or the second link. The sensor assembly includes a force sensing resistor assembly configured to measure force and an interface member disposed over the force sensing resistor assembly, the interface member configured to engage the at least one force sensing resistor assembly due to the interface member contacting an obstruction.

The application discloses a high-temperature pressure sensing chip based on a single crystal silicon wafer and a three-dimensional integration method, and a manufacturing process of the chip comprises a force sensing resistor manufacturing step, an insulation isolation step, a high-temperature-resistant electrode and interconnection manufacturing step, a pressure-sensitive diaphragm etching step and a bonding step. The application uses a method of etching an insulation isolation groove around the force sensing resistor, filling and covering an insulation layer and precisely etching a lower layer bulk silicon of the force sensing resistor, avoids the problem of failure of a traditional single crystal silicon pn junction isolation high-temperature leakage current, does not depend on expensive materials such as SOI wafers and silicon carbide wafers, uses a general single crystal silicon wafer to realize mutual insulation isolation between Wheatstone bridge force sensing resistors, and meets high-temperature working requirements. The proposed air-tight leadless bonding method based on a through silicon via further improves the reliability of the pressure sensing chip. Meanwhile, the manufacturing method is fully compatible with a silicon-based CMOS process, and on-chip system integration can be realized.

The utility model provides a simple cast-in-place continuous beam hollowing prevention real-time observation device, and relates to the field of building construction monitoring, the simple cast-in-place continuous beam hollowing prevention real-time observation device comprises a plurality of force sensing resistors with sensing surfaces arranged at the inner side of a pouring template, and the plurality of force sensing resistors are distributed at the upper part of a box beam chamfering template, a manhole bottom template and the like; the force-sensitive resistor is connected with a light-emitting part and a power source in series, the resistance of the force-sensitive resistor is close to infinite when no pressure exists, the resistance is gradually reduced when the force-sensitive resistor is pressed, and the light-emitting part and the power source are arranged on the outer side of a pouring formwork. According to the device, the change of the brightness of the light-emitting part is converted through the force-sensitive resistor, the concrete pouring condition, which cannot be observed, in the formwork such as a chamfering formwork in the formwork can be reflected in real time through the brightness condition of the light-emitting part on site, response can be made in time in the construction process through real-time observation, the trouble of post-treatment is reduced, and the construction efficiency is improved. And meanwhile, the construction quality is also ensured.

The invention discloses a container crane for production and transportation of large-size casting parts, and relates to the technical field of cranes. The device comprises a base, a stress platform, a steel wire reel and a multi-stage safety protection system. A stress platform is arranged on the base in a sliding mode, the swing direction and degree of a hoisted object are monitored in real time through a force sensing resistor and an extrusion block, and accurate data are provided for operation. The steel wire reel is controlled by a driving motor to rotate through a worm gear and a worm, a centrifugal clamping locking mechanism for limiting a swing block and a limiting ring disc is arranged, and when self-locking fails, the reel is prevented from rotating rapidly. If locking fails, the driven roller rotates at a high speed to trigger friction between the electromagnet disc and the friction disc to slow down, and the falling speed of the hoisted object is slowed down. The dustproof cover and the balls are matched to reduce abrasion and prolong the service life of equipment.

An information handling system includes a chassis, a filter, a force sensing resistor, and a baseboard management controller. The chassis includes a bezel. The filter is in physical communication with the bezel of the chassis. The force sensing resistor is in physical communication with the bezel and with the filter. The baseboard management controller communicates with the force sensing resistor and receives a voltage level from the force sensing resistor. Based on the voltage level, the baseboard management controller determines a clogged level for the filter. The baseboard management controller determines whether the clogged level is greater than a threshold level. In response to the clogged level being greater than the threshold level, the baseboard management controller determines that the filter needs to be replaced and provides a filter clogged message.

A printed electronic sensing device is provided for use with insole devices, gripping devices and other similar articles. The printed electronic sensing device is configured to measure force applied thereon and at least one of proximity and friction. In one form, the electronic sensing device includes a flexible, substantially planar substrate having a pair of opposed surfaces, including a first surface and an opposed second surface, at least one force sensing resistor (FSR) additively printed on the first surface, said FSR configured to sense pressure applied to the device, and at least one capacitive sensor additively printed on the second surface, said at least one capacitive sensor configured to sense at least one of sliding of an object across the second surface and proximity to the object relative to the second surface of the device.

A system and method to alert a driver of a vehicle as a safety system for vehicle includes a force sensing resistor and a galvanic skin response sensor coupled to the steering wheel, and an alarm notification module. The alert system further includes a processing unit with a circuitry including instructions to receive initial conductance data and real-time conductance data from the galvanic skin response sensor, and real-time force data from the force sensing resistor; generate a mean data from the initial conductance data; apply an averaging filter to the real-time conductance data to generate filtered real-time conductance data; generate a first comparison between the real-time force data and a predefined threshold; generate a second comparison between the filtered real-time conductance data and the mean data; and activate the alarm notification module of the vehicle based on at least one of the first comparison and the second comparison.