839 results about "Load sensing" patented technology

A surgical instrument for being endoscopically or laparoscopically inserted into a surgical site for simultaneous stapling and severing of tissue includes load sensing pressure transducers strategically placed for closed loop control and monitoring. Load sensing within a staple applying assembly (end effector) may provide feedback for preventing firing with insufficient or too much tissue, or to sense appropriate presence buttress material, to deploy buttress material after firing is sensed.

Apparatus is provided for diagnosing or treating an organ or vessel, wherein a device having at least two optical fiber sensors disposed in a distal extremity thereof is coupled to processing logic programmed to compute a multi-dimensional force vector responsive to detected changes in the optical characteristics of the optical fiber sensors arising from deflection of the distal extremity resulting from contact with the tissue of the wall of the organ or vessel. The force vector may be used to facilitate manipulation of the catheter either directly or automatically using a robotic system.

A wireless power transmission system includes, a transmit antenna which in operation produces a wireless field, an amplifier coupled to the transmit antenna, a load sensing circuit coupled to the amplifier and a controller coupled to the load sensing circuit. A monitoring device has one or more sensors and a unique user ID. The one or more sensors acquire user information selected from of at least one of, a user's activities, behaviors and habit information. The monitoring device includes an ID circuitry. A communication interface receives information about the unique user ID when the load sensing circuit indicates the monitoring device is within the wireless field. The indication is created using at least a change in power consumption.

A method and apparatus to ennumerate an aggregate of a stored product. An RFID tag attached to a product is interrogated to determine the product's identity which implies the product's unit weight. A gross weight of the stored product is determined by load sensors associated with the platform or container holding the product to be enumerated. A unit quanity of the stored product is determined from the product's unit weight and the gross weight of the stored product.

Apparatus is provided for diagnosing or treating an organ or vessel, wherein a device having at optical fiber contact force sensors disposed in a distal extremity thereof and a deflection mechanism configured to deflect the elongate body at a location proximal of the distal extremity. The optical fiber contact force sensors are configured to be coupled to processing logic programmed which computes a force vector responsive to detected changes in the optical characteristics of the optical fiber contact force sensors arising from deflection of the distal extremity resulting from contact with the tissue of the wall of the organ or vessel.

A load sensing bearing assembly comprises a bearing outer race secured to an application structure by a flange assembly incorporating a plurality of anisotropic spring regions which enable a limited range of displacement and/or rotation of the bearing outer race relative to the application structure in response to applied forces or moments. A set of sensor modules disposed through the bearing outer race and flange assembly acquire measurements from which the radial forces, thrust forces, and tilting moments exerted on the bearing outer race can be determined.

A surgical device includes an adapter assembly including a tubular housing having a proximal end portion configured to couple to a handle assembly, and a load sensing assembly disposed with the tubular housing. The load sensing assembly is configured to measure a load exerted on the tubular housing and includes: a sensor body including a pocket defined therein; a load sensor circuit disposed within the pocket and coupled to the sensor body; a signal processing circuit disposed within the pocket and electrically coupled to the load sensor circuit; a cover defining a cavity and disposed over the pocket and enclosing the load sensor circuit and the signal processing circuit therein, the cover being coupled to the sensor body thereby forming a first hermetic seal therebetween; and a thermal management material disposed within the cavity and in contact with the load sensor circuit and the signal processing circuit.

A thin, flat capacitive load sensor, such as of layered sandwich construction, having a variety of shapes, so as to provide a seal between two or more opposing surfaces. The load sensor includes a thin first and second insulating outer layer between which an inner layer is secured. The inner layer can be formed of dielectric material of a known dielectric constant, with at least one thin electrical conductor to accommodate load sensing disposed against a first face, and another thin electrical conductor to accommodate load sensing disposed against a second face. Electrical conductors connect the thin conductive areas on the first and second faces to the distal end of a tab extending beyond the load or connection measurement area. The distal end of the tab accommodates a connection with electrical measurement apparatus. As the inner layer is compressed, the spacing between the electrically conductive areas on the opposing faces is decreased such that compressive forces can be measured as a function of the changes in capacitance of the sensor. In this manner, proper compression can be achieved by monitoring capacitance during installation. Follow-up sampling or continuous measurement of sensor compression provides early detection prior to failure to allow corrective action.

Methods and systems for electrical distribution submetering are provided. The electrical distribution submetering system includes a modular load sensing assembly including a plurality of load sensors. The load sensing assembly further includes a first cable having a first cable termination connector, an interface board including a plurality of electrical terminations, at least some of the terminations electrically coupled to a second cable having a second cable termination connector coupled to at least one conductor of the second cable, the second cable termination connector being complementary to the first cable termination connector such that the first cable termination connector and the second cable termination connector are configured to be electrically coupled. The submetering system also includes a modular sub metering electronics communicatively coupled to the interface board, the modular sub metering electronics configured to determine a branch circuit load in the electrical distribution system using the detected electrical load.

An apparatus supplies AC power to a load. The apparatus includes a set output terminals, a primary circuit, and a load sensing circuit. The primary circuit is electrically coupled to a source of AC power and to the output terminals for selectively providing power at a low voltage at the output terminals or electronically coupling the source of AC power directly to the output terminals. The load sensing circuit coupled to the primary circuit and the source of AC power for determining a resistance associated with the load at initial application of the load and controlling the primary circuit to electronically couple the source of AC power directly to the output terminals if a proper load is detected.

In a vehicle bumper structure, an optical fiber sensor (32) is provided in a vehicle width direction on the front surface of a front-bumper reinforcement (30). A front-bumper absorber (28) is provided in front of the optical fiber sensor (32), the front-bumper absorber (28) formed of a soft absorber (54) and a hard absorber (56). The hard absorber is disposed at the bumper center region where the thickness of the bumper is increased. Accordingly, the thickness of the soft absorber (54) becomes substantially uniform in the vehicle width direction, so that a substantially uniform load is inputted to the optical fiber sensor (32) regardless of the collision position of the bumper with an object. As a result, variations in the output of the load-sensing unit are reduced.

An actuator load path monitoring system for an aircraft having an aircraft structure, a control surface, and, an actuator connected between the aircraft structure and the control surface to support and position the control surface as desired relative to the aircraft structure. The actuator is of a type including a) an upper actuator assembly securely connected to the aircraft structure, including a motor assembly and gear assembly; b) a ball screw assembly operatively connected to the gear assembly; c) a tie-rod assembly positioned within the ball screw assembly; and, d) a lower actuator assembly securely connected to the control surface, wherein actuation of the ball screw provides selected positioning of the control surface. The actuator load path monitoring system includes an upper load sensing assembly positioned in an upper load path between the upper actuator assembly and the aircraft structure. The upper load sensing assembly provides upper indications of the applied forces in the upper load path when the upper load path is disconnected. A lower load sensing assembly is positioned in a lower load path between the lower actuator assembly and the control surface. The lower load sensing assembly provides upper indications of the applied forces in the lower load path when the lower load path is disconnected. A computer system receives the upper and lower indications of applied forces and analyzes the upper and lower indications, thereby monitoring the structural integrity and safety of the upper and lower load paths by annunciating the detection of a failed portion thereof.

The invention discloses a proportional multi-way valve with a turning load feedback function, comprising an oil inlet control joint valve body and a unit operation control joint valve body which are sequentially overlapped; a three-way flow valve core, a main overflow valve, and a turning valve core and a first pressure compensation valve which are integrated and matched are arranged in the oil inlet control joint valve body; an oil inlet of the three-way flow valve core is communicated with a pressure oil duct, and an oil return port of the three-way flow valve core is communicated with an oil return channel; the oil inlet of the main overflow valve is communicated with a load sensing port oil duct, and the oil return port of the main overflow valve is communicated with the oil return channel; the load sensing port oil duct is also communicated with a spring cavity control end of the three-way flow valve core; a unit control valve core and a second pressure compensation valve which are integrated and matched are arranged in the unit operation control joint valve body; the three-way flow valve core is arranged, so that the immediate discharge of real-time flow is realized, the action is flexible, and the control performance is improved; a turning auxiliary load feedback function is added, so that the operation efficiency of a whole machine and the actual operability are improved; and a two-position two-way electromagnetic valve is added, two operation modes, i.e. electrification and non-electrification are designed, so that the operation safety in configuration is improved.

The invention relates to a quantitative and variable hydraulic system of a loading machine. The shortcomings that a quantitative hydraulic system in an existing loading machine hydraulic system is high in energy consumption, and a variable hydraulic system in the existing loading machine hydraulic system is high in cost are overcome. The quantitative and variable hydraulic system is characterized in that a load sensing steering gear and a load sensitive flow amplification valve are connected to control a steering oil cylinder; a pilot valve and a load sensitive distribution valve are connected to control a working oil cylinder; an oil outlet of a load sensitive variable pump passes through a pressure-gradient control valve to be respectively communicated with an opening P of the load sensitive flow amplification valve and an opening P of the load sensitive distribution valve, a metering pump passes through an unloading valve to be communicated with the opening P of the load sensitive distribution valve, an opening LS of the unloading valve obtains a pilot oil pressure signal from the pilot valve, and an opening LS of the load sensing steering gear and an opening LS of the pressure-gradient control valve are communicated to provide a loading pressure signal for the load sensitive variable pump through a shuttle valve with the load sensitive distribution valve. By means of the quantitative and variable hydraulic system, overflowing losses, medium-position opening losses and high-pressure unloading losses are avoided, the energy consumption and the cooling power are low, and the oil liquid service life is long.

The invention discloses a variable control system of plunger variable pump, comprising a plunger variable pump having an output main oil way supplying oil to load of a hydraulic system, a left variable oil cylinder component and a right variable oil cylinder component used for regulating swash plate tilt angle change, also having a constant power valve, a pressure stop valve and a load sensitive valve. The system realizes three control functions at the same time: constant power, pressure stop and load sensing, not only has simple structure, but also can greatly improve work stability of the plunger variable pump, and has advantage of saving energy.