867 results about "Load cell" patented technology

The present application relates to a sensor-weight system for an exercise machine. The system comprises a load cell, a three-axis accelerometer, a battery, a housing, a communication unit, a data processing unit, and a weight stack with multiple weights. The load cell interconnects a cable with the weight sword of the weight stack, allowing precise measurement of the user's exerted force during exercise.

Systems, devices, and methods are provided for pulsed strain gauge topologies. A weight sensor assembly may comprise one or more load cells for receiving excitation pulses during a first state period of a duty cycle, sample and hold (S / H) circuitry connected to the one or more load cells that holds analog measurement signals from the one or more load cells, first filtering circuitry connected to the S / H circuitry for processing the analog measurement signals and producing a DC level signal, an amplification system connected to the filtering circuitry, for amplifying the DC level signal, second filtering circuitry connected to the amplification system for filtering power line noise, and analog-to-digital (ADC) circuitry connected to the second filtering circuitry. Examples of load cells described herein include full-bride load cells (FBLCs) and half-bridge load cells (HBLCs).

This disclosure describes, in part, systems and techniques for determining compensation models to adjust load cell data and ensure accuracy of the load cells on a mobile apparatus through changing environments and conditions. This disclosure relates, specifically, to generating a compensation model by gathering sensor data for known weights of items over a range of weights, locations, temperatures, and humidity values and building a compensation model to infer compensation error to apply to the estimated weight data from the load cells. The compensation model can be used by a fleet of carts to infer weights of items in a manner accurate enough for sale-by-weight of items.

The invention discloses an intelligent glass fiber drum unloading method and system based on digital twinning, and the method comprises the steps: collecting a yarn roll forming signal of a fiber forming machine, the positioning coordinates of a creel vehicle and the data of a weighing sensor in real time, and generating a multi-source synchronous data set; based on the multi-source synchronous data set, the three-dimensional coordinates of the center of the yarn roll and the lifting distance of the manipulator are solved, and a grabbing parameter set is output; the grabbing parameter set is issued to a servo control system, a manipulator is driven to complete yarn ball grabbing-weighing-placing operation, and a physical execution verification data packet is synchronously generated; and the motion trail of the manipulator and the stock state of the creel car are reconstructed in real time in the digital twin virtual model, and an abnormal early warning instruction is triggered and pushed to operation and maintenance personnel. By means of the embodiment of the invention, accurate positioning and real-time deviation correction in the yarn ball grabbing process can be achieved, and the reliability and production efficiency of drum unloading operation are improved.

An apparatus for determining durability of a wallboard joint compound composition includes an adhesion release testing machine including a machine base, a vertical mast connected to the base, a load cell connected to the mast, a sled movable on the machine base between a first position and a second position, a display associated with the machine base and connected to the load cell for displaying numerical values of loads applied to the load cell. A probe plate includes a lower surface with a depending probe; an anchor base disposed on an upper surface of the probe plate; and a chain connecting the probe plate to the load cell. A set sample strip of wallboard joint compound composition is secured to an upper surface of the sled and arranged for engagement by the probe as the sled moves on the machine based between the first position and the second position.

The present invention belongs to the technical field of flutter tests for rotorcrafts, and discloses a ground whirl flutter test system and test method for a rotorcraft. The ground whirl flutter test system for the rotorcraft comprises a hardware part and a software part. The hardware part comprises a rotor test article, a support system, force loading devices, vibration signal sensors, load cells, vibration signal acquisition cards, an industrial control computer, force signal output cards, a power amplifier and load cell signal acquisition cards. The software part of the ground whirl flutter test system for the rotorcraft comprises a rotor force and moment calculation program and a multi-input multi-output force control program running on the industrial control computer. The method can reserve all dynamic characteristics of the aircraft structure, is not restricted by the size of a wind tunnel test chamber section, does not require dynamic scaling of aircraft structures.

A traveling robot comprises: a lower housing; a frame assembly positioned inside the lower housing; a traveling unit position at the lower part of the frame assembly; a tray frame coupled to the upper part of the lower housing so as to extend upwardly; a load cell coupled to the tray frame; a moving bracket coupled to the upper part of the load cell; a tray holder coupled to the moving bracket and protruding through a fastening hole of the tray frame; and a tray module seated on the tray holder. By having the load cell, the traveling robot is capable of detecting whether an object placed on a tray is present or falling, toppling over, etc. and thus is capable of traveling in a stable manner.

The utility model provides an automatic weighing vending cabinet which comprises a cabinet body with an opening in one side; the cabinet door covers the opening in an openable and closable manner; the multiple layers of goods channels are arranged in the cabinet body at intervals in the height direction; the shelf board modules are provided with selectable models for bearing the material boxes of different numbers and sizes, the shelf board modules of different selectable models are all integrally integrated with weighing sensors corresponding to the material boxes in number, and the shelf board modules of different selectable models are integrally assembled and disassembled in the corresponding goods channels through the openings. According to the utility model, the shelf board modules with different selectable models are detachably arranged on the goods channel, so that the shelf board modules can be quickly assembled, taken out and replaced, and the maintenance cost is effectively reduced. And meanwhile, the shelf board modules of corresponding models can be replaced and assembled in the goods channels according to adjustment of use requirements, and the applicability is effectively improved.

The invention relates to a weighing system (10) comprising - a base (12), - a load sensor (14) which is articulated to the base (12) by means of a parallel link arrangement, - a translation lever (24) pivotably attached to the base (12) by means of a translation lever joint (25), the first translation lever arm (241) of which is connected to the load sensor (14) via a load coupling band (28) and the second translation lever arm (242) of which carries an element of an electromagnetic compensatory sensor arrangement (26), - an astaxation force generating element (42) fixed on one side at the base (12), by means of which an astaxation force can be generated which can be introduced into an introduction point (32) on the force flow path, and - an astaxation lever (36) pivotably attached to the base (12) by means of an astaxation lever joint (40), which is connected to the introduction point (32) at a first coupling point by means of an astaxation coupling band (34) and which is operatively connected to the astaxation force generating element (42) at a second coupling point. The invention is characterized in that the introduction point (32) is rigidly connected to the load receiver (14) and the astaxation coupling band (34) is extended longitudinally in the longitudinal direction (L) of the weighing system (10) and has a different length than each of the parallel links (16a, 16b).

The present invention provides a technique capable of reducing the time required for measurement while achieving high measurement accuracy. A metering device (1) is provided with a load unit (3) that transmits a load to a load cell (2), and a hanger (5) that is connected to a metering container (4) into which an object to be metered is inserted, and is provided with an upper sleeve-type member (61) and a lower sleeve-type member (62), which are elastic bodies, at a connection site between the hanger (5) and the load unit (3), and between the metering container (4) and the hanger (5). Impact load can be buffered, and vibration can be rapidly attenuated.

A device and a method for weighing a roll of continuous web material on a spool at a weigh-ing station in a continuous process is described, which has fewer mechanical parts and is safer to use than prior devices and methods. The device is arranged adjacent to at least one of a pair of guide rails and comprises a damper and a load cell, wherein the load cell is integrated into at least one guide rail.

The invention discloses a high-stability weighing sensor based on self-adaptive structure adjustment, relates to the technical field of weighing sensors, and aims to solve the technical problem that the sensor bears unbalance loading force due to the fact that the placement position of an object is deviated, and the high-stability weighing sensor comprises a fixed base and a resistance strain type weighing sensor fixedly installed at the top of the fixed base. An adjusting mechanism is arranged at the top of the fixed base, and a stabilizing mechanism is arranged at the top of the adjusting mechanism. According to the invention, the floating seat is connected with the bearing seat through the spherical universal joint, and when a weighing object is placed at the edge of the bearing seat and causes unbalance loading, the spherical universal joint can actively adjust the posture of the bearing seat through inclination, and the L-shaped elastic arm at the unbalance loading side is matched to generate tiny bending due to increased stress; in the force transmission process, the first arc thin connection section can deform through self elasticity, interference of transverse component force on the main elastic body is eliminated, and the problem that the sensor bears unbalance loading force due to the fact that the placing position of an object is deviated is solved.

The utility model relates to the technical field of weighing and lifting devices, and particularly discloses a weighing and lifting device for split charging of liquid gas, which comprises a lifting device arranged in an operation groove reserved on the ground and comprising a lifting platform; the weighing device is used for placing the Dewar tank and weighing the Dewar tank, the weighing device is arranged on the lifting platform, the lifting device is used for adjusting the height of the Dewar tank located on the weighing device, and the weighing device comprises a weighing platform, a plurality of weighing sensors and a plurality of mounting plates; the plurality of mounting plates are arranged at intervals along the length direction of the lifting platform and are connected with the weighing platform through the plurality of weighing sensors. The utility model solves the problems that when the split charging operation is carried out on the liquid gas, the liquid gas often needs to climb to the interface above the Dewar tank by virtue of a ladder, the operation mode is time-consuming and labor-consuming, and the safety accident is easily caused.

The utility model discloses a rapid installation type weighing platform type rail weighbridge, and aims to provide the rapid installation type weighing platform type rail weighbridge which can meet the weighing precision requirement and can be rapidly installed. The device comprises a weighing platform, the top surface of which is provided with a weighing rail; the steel structure underframe is provided with two groups of fixed supports distributed along the direction of the weighing rail, the weighing platform is located above the steel structure underframe, and the weighing platform is located between the two groups of fixed supports; the sensor device comprises a front weighing sensor assembly, a middle weighing sensor assembly and a rear weighing sensor assembly which are sequentially distributed in the direction of the weighing rail, and the weighing platform is supported on the steel structure underframe through the sensor device.

The utility model relates to the technical field of packaging machines, and discloses a packaging machine weighing mechanism which comprises a storage bin, a plurality of conveying assemblies are arranged on the lower side of the storage bin, weighing assemblies are arranged at the discharging ends of the conveying assemblies, and each weighing assembly comprises a charging barrel located below the discharging end of the corresponding conveying assembly. A weighing unit is arranged below the charging barrel, the weighing unit comprises a buffer frame located below the charging barrel, and a plurality of weighing sensors are arranged at the lower end of the buffer frame; through cooperative use of the storage bin, the conveying assembly and the weighing assembly, slow and uniform material conveying is achieved through the discharging port and the conveying assembly, the feeding precision is high, the feeding starting and stopping amount is controlled in batches and independently, the temporary storage unit is independently weighed through the weighing unit, batch packaging can be achieved, independent weighing can be conducted according to needs, and the production efficiency is improved. Different packaging requirements are met at the same time, and the effects of being high in weighing precision and wide in application range are achieved.

The utility model discloses an intelligent weighing tool cabinet which comprises a cabinet body, the cabinet body is provided with a control host and a plurality of storage cells, the bottoms of the storage cells are provided with storage plates, and weighing assemblies are arranged below the storage plates; the weighing assembly comprises an annular supporting plate and a weighing sensor, a plurality of supporting columns are evenly arranged on the upper surface of the annular supporting plate in the circumferential direction, a plurality of grooves matched with the supporting columns are formed in the bottom face of the storage plate, and the supporting columns are inserted into the grooves in a one-to-one correspondence mode so that the storage plate can be fixedly installed on the annular supporting plate. The weighing sensors comprise the first weighing sensor and the second weighing sensor, and the first weighing sensor and the second weighing sensor are symmetrically arranged on the two sides of the bottom face of the annular supporting plate and connected with the control host. The utility model provides an intelligent weighing tool cabinet which can improve weighing accuracy.

A rotorcraft propulsion system includes a mast coupled to a rotor assembly, a gear coupled to the mast, the gear during use producing an axial reaction force, a flexure shaft extending from the gear, where the flexure shaft does not rotate with the gear and the flexure shaft flexes in response to radial loads from the gear, and a load cell on the flexure shaft to measure the axial reaction force.

The application provides a speed bump energy absorption working condition recognition method and system, and relates to the technical field of intelligent transportation systems.The method collects vehicle weight, speed and vertical acceleration data in real time through a laser radar and a load cell, constructs a full-quantity feature data set, first calculates kinetic energy change and vertical impact energy, and after the cumulative energy reaches a threshold, stores the speed and acceleration data before and after the speed bump according to vehicle weight, performs Fourier transform on the acceleration data, extracts the low-frequency energy proportion, and constructs a quadratic regression model combined with the speed before and after the speed bump to predict the speed after passing through.The energy proportion abnormal threshold is set by statistical stratification of the mean and standard deviation of the energy proportion database, and when the low-frequency energy proportion of a new vehicle is lower than the energy proportion abnormal threshold and the speed prediction error is greater than or equal to 15%, it is determined that the energy absorption structure fails, and the dynamic monitoring and accurate diagnosis of the health state of the speed bump are realized.

A coal mine deep well hoist communication system and method based on intelligent metasurface assistance, the system comprises an Internet of Things device, an edge computing node, a cloud server and an intelligent metasurface, the Internet of Things device comprises a tension sensor, a weighing sensor and an acceleration sensor; the tension sensor, the weighing sensor and the acceleration sensor are connected with the edge computing node through the intelligent metasurface, and the edge computing node is connected with the cloud server through a wired transmission medium. The method comprises the following steps: arranging the intelligent metasurface and constructing an intelligent communication system; modeling the energy loss and the calculation time delay in the calculation offloading process of the intelligent communication system; constructing a comprehensive benefit function integrating the energy efficiency and the calculation time delay; taking the maximization of the comprehensive benefit function as the optimization target of the calculation offloading strategy; constructing a security reinforcement learning model; and realizing the optimal calculation offloading benefit. The system and method can ensure the stability of the wireless data link inside the hoist and improve the transmission efficiency of data.

A cognitive assessment and stimulation method and a robotic platform for hippotherapy that comprises a structure comprising at least a high torque servomotor, and an articulated mechanism that simulates the horse's head, at least two load cells placed on the articulated mechanism of the structure, for controlling direction and speed, at least one seat module, that comprises at least one inertial sensor of posture intended to be placed on the patient to determine his / her posture, and one or more load cells placed on the seat to determine the load distribution thereon; and at least two pressure sensors for speed control and that further comprises a temperature control module, which allows temperature control, a visual stimulation sub-module and / or an auditory stimulation sub-module, a crane type module coupled to a harness comprising some stirrups which allow the transfer of the patient and also providing control of weight on the platform and give security to the patient, avoiding the risk of falling.

The utility model provides a kind of self-stable micro measuring device for powder stirring, including fixed platform, powder conveyor unit, sling scale support, weighing assembly, weighing hopper upper cover assembly and shock absorbing component;Powder conveyor unit and sling scale support are installed based on fixed platform;Weighing assembly includes weighing sensor and weighing hopper, the base of weighing sensor is installed on sling scale support by shock absorbing component, and weighing hopper is arranged on the upper end of weighing sensor for weighing;Weighing hopper upper cover assembly includes weighing hopper upper cover and flexible connecting body, weighing hopper upper cover is hard connected with the output end of powder conveyor unit, weighing hopper upper cover is soft connected with weighing hopper by flexible connecting body, and feeding port is formed on weighing hopper upper cover for the output end of powder conveyor unit and weighing hopper are connected;Discharge valve is arranged at the lower outlet of weighing hopper, and vibrator is arranged on the outer side of the periphery of weighing hopper.The device maximizes the elimination of the interference of vibration to measurement, so that measurement can maintain the required accuracy.

The utility model discloses a crystal growth lifting mechanism based on a portal frame structure, which relates to the technical field of crystal growth equipment, comprises a main bracket, and is characterized in that two groups of portal frame side frames are arranged above the main bracket, and a portal frame cross frame is welded between the two groups of portal frame side frames; a lifting and rotating assembly capable of stably lifting and rotating a seed crystal shaft is arranged at the top end of the portal frame transverse frame. The crystal growth lifting mechanism based on the portal frame structure is provided with a mounting plate, a lead screw power head, a flange type magnetic fluid hollow shaft assembly, a water circulation rotating joint and a columnar weighing sensor, when the crystal growth lifting mechanism is used, a first ball screw rotates, a lifting platform plate moves up and down, and a hollow shaft drives a rigid seed crystal shaft below to synchronously rotate at a constant speed; on the three groups of uniformly distributed columnar weighing sensors, the weight of crystals can be conveniently monitored, the stable lifting and rotating function is realized, and the problem that the device does not have the stable lifting and rotating function is solved.

The invention discloses a multi-parameter density measuring device and measuring method based on floating ball weighing compensation, the multi-parameter density measuring device comprises a data computer, a weighing sensor and a floating ball, the weighing sensor is connected with the data computer through a weighing signal line, the floating ball is arranged below the weighing sensor through a wire, the wire extends into the floating ball, and the data computer is connected with the data computer through the wire. A wire is arranged in the floating ball, the wire is connected with a data computer through a connecting signal line, a front circuit board connected with the wire is arranged in the floating ball, a first temperature sensor and a second temperature sensor are further arranged in the floating ball, and the first temperature sensor and the second temperature sensor are both connected with the front circuit board. The measuring principle, the structural design and the algorithm model form a technical barrier, experiments show that the error within the density range of 2.5 g / cm < 3 > is smaller than or equal to + / -0.15%, the conductivity measuring error is smaller than or equal to + / -1%, the device is suitable for the 10MPa high-pressure working condition, and the comprehensive performance is remarkably superior to that of existing single-principle measuring equipment.

The utility model relates to a tensile calibration tool for a load sensor. The tensile calibration tool comprises a detection frame, a torque loading piece, a calibration sensor and a plane bearing, the torque loading piece applies a dynamic or static axial tensile load to the calibration sensor, and the counter-acting force of the torque loading piece is transmitted to the detection frame through the plane bearing. The plane bearing eliminates lateral force interference through a ball / roller structure, it is ensured that loads are strictly transmitted to a load sensor in an installation area in the axial direction, and high-precision calibration is achieved. The detection frame is further provided with a lower U-shaped plate and a lower detection plate to form an installation area for wrapping the load sensor, and transverse displacement is limited. The upper U-shaped plates are additionally arranged on the frame body and staggered with the lower U-shaped plates to form a cross-shaped supporting frame, loads are dispersed, and stress concentration is avoided. An adjusting gap is arranged between the upper and lower U-shaped plates to adapt to sensors of different sizes. By arranging the plane bearing and the calibration sensor, the lateral force or the lateral torque is eliminated, the high-precision force value is obtained, the overall structure is simple, and the cost is low.

The utility model relates to the technical field of mould pressing tray processing, in particular to a full-automatic mould pressing tray spreading machine which improves production and processing efficiency. Comprising a welding frame, a stock bin, a weighing sensor, a vibration baffle and a two-layer conveying belt, the stock bin is installed at the top end of the welding frame, the weighing sensor is arranged between the stock bin and the welding frame, the vibration baffle and a discharging conveying belt are arranged at the output end of the stock bin, and left-right vibration is driven by an air cylinder installed on a side plate of the stock bin. The discharging conveying belt is driven by a first servo motor and a first worm and gear speed reducer, and the device further comprises a second-layer conveying belt, a lifting assembly, a release agent nozzle assembly, a lifting frame, a brush rolling shaft assembly, a telescopic assembly, a material flattening assembly, a material distributing assembly and an anti-blocking assembly.

The utility model discloses quantitative loading equipment. The quantitative loading equipment comprises a material distributing mechanism, a quantitative weighing mechanism and a material collecting and loading mechanism which are sequentially arranged from top to bottom, the quantitative weighing mechanism comprises a support frame and four bins which are arranged at intervals in a shape like a Chinese character'tian ', the four bins are fixed on the support frame, the lower part of each bin is provided with a discharge port, the discharge port is provided with a discharge gate, the peripheral wall of each bin is provided with a weighing sensor, and the weighing sensors are used for measuring the mass of materials in the bins; the material distributing mechanism is used for receiving materials conveyed by the feeding belt and distributing the materials to the four material bins, and the material collecting and loading mechanism is used for guiding the materials discharged by the material bins to the loading position. The quantitative loading equipment has enough buffer capacity under the condition that a huge material receiving buffer bin with a single buffer function does not need to be arranged, and rotary motion of a large-tonnage stock bin is avoided, so that the manufacturing cost and the energy consumption of the loading equipment are reduced, and the quantitative loading equipment has relatively high metering precision.

A patient handling device with a patient weight measurement system (10), comprising a lift mast (2) connected to a base frame (3) and a lift arm (4) horizontally connected to the lift mast (2), wherein the patient weight measurement system (10) is attached to a first end (4a) of the lift arm (4), wherein the patient weight measurement system (10) comprises a load cell assembly (11) and a tilt measuring device (12), and wherein the tilt measuring device (12) is positioned directly underneath the load cell assembly (11) configured to measure a tilt angle (α1, α2) of the load cell assembly (11) when lifting a patient.

A load cell transducer including one or more strain gauges configured to generate a first signal indicative of a force applied to the load cell transducer and a sensor configured to generate a second signal indicative of an acceleration and an orientation of the load cell transducer. The load cell transducer further includes a controller communicatively coupled to the one or more strain gauges and the sensor. The controller is configured to determine a weight of an object based on the first signal, determine at least one of a static inclination or an acceleration of the load cell transducer based on the second signal, and output a message indicating an issue of the load cell transducer based on at least one of the static inclination and the acceleration.

The application discloses a material blocking pre-judgment and collaborative control method and system for a multi-scale collaborative batching system. The method comprises the following steps: in the unloading process, real-time weight signals of each weighing sensor are acquired and real-time gravity center coordinates of the material are calculated; the gravity center moving speed is calculated; the weight change amount of the feeding end and the unloading end is acquired; when the gravity center speed continuously falls below the threshold and the weight change meets the abnormal condition, a material blocking pre-judgment signal is generated and all batching scales are stopped; after the automatic execution of the material blocking recovery operation and the determination of the troubleshooting, the scales are started in turn from long to short according to the remaining distance of the material front end of each scale from the unloading end to restore the collaborative unloading. The application accurately pre-warns in the early stage of material blocking and globally collaboratively stops through the double criteria of gravity center kinematics and regional weight difference, effectively guarantees the batching accuracy, and is especially suitable for high-reliability and high-precision industrial batching scenes.

A robot or robotic system comprising a plurality of support structures, and a plurality of joint mechanisms each joint mechanism rotatably coupling at least two of the plurality of support structures. A sensor discrepancy detection system can be operable to interrogate a suite of sensors within the robotic system, and can comprise a plurality of sensor groups, each associated with a respective joint mechanism, and each comprising a plurality of sensors from the suite of sensors. A controller can execute a remedial measure associated with a safety / remedial mode of the robotic system based on an identified discrepancy between the sensor output data of the load cell compared to transformed sensor output data from the joint position sensor and the actuator position sensor, accounting for the transmission ratio, related to a difference in position and representing a transmission deflection, and correlated to a corresponding force associated with the difference in position.