52results about "Force transducers" patented technology

The invention relates to the technical field of coal mine rock burst monitoring and early warning, in particular to a rock burst mine micro-seismic data b value calculation method and device, electronic equipment and a computer readable storage medium, and the method comprises the steps: obtaining original micro-seismic time sequence data of a target monitoring area; preprocessing the original micro-seismic time sequence data to obtain preprocessed micro-seismic time sequence data; performing normalization processing on the preprocessed micro-seismic time sequence data to obtain standardized micro-seismic time sequence data; performing wavelet multi-scale decomposition to obtain a low-frequency approximate component and a high-frequency detail component; carrying out linear fitting by utilizing a Guyden-Ricker law to obtain a multi-scale b-value data set; and constructing and training a long-short-term memory network model, and obtaining a multi-scale b value fusion result as a final b value. Through a wavelet multi-scale decomposition technology, micro-seismic data is adaptively decomposed into components reflecting different time scales, and the limitation of manually setting a single sliding window is eliminated.

The present application relates to a kind of one-hole multi-point position liquid-filled expansion pillow type borehole stress meter, including expansion pillow, pressure detector and oil pipe, the expansion pillow is the closed tubular structure, oil pipe is connected with the one end of expansion pillow, the outer ring of the expansion pillow is equipped with the recessed tube wall and forms the avoidance slot inwards, the avoidance slot extends along the length direction of expansion pillow and is through the length direction of expansion pillow, oil pipe can be housed in the avoidance slot, the avoidance slot is at least equipped with two and is uniformly distributed along the circumference, by setting avoidance slot on expansion pillow, the oil pipe of other expansion pillow set can be passed, when measuring the stress of multiple points, multiple stress meters are loaded into one by one, the oil pipe of stress meter in deeper position needs to cross the stress meter in shallower position, oil pipe passes from avoidance slot, thus can measure the rock stress of multiple different depth positions in one hole, to increase the field practicability and applicability of borehole stress monitoring, improve the accuracy of rock burst monitoring and early warning.

The invention relates to a method and device for obtaining grouting pressure distribution, a storage medium and electronic equipment, and the method comprises the steps: determining a monitoring hole for monitoring a grouting hole in a target grouting region according to a monitoring layout strategy; a grouting pressure sensor, a soil pressure sensor and a pore water pressure sensor are respectively arranged at different depths of the monitoring hole; the monitoring holes are backfilled, and grout is injected into the grouting holes in a segmented mode according to the grouting technology; in the grout injection process, a grouting pressure sensor, a soil pressure sensor and a pore water pressure sensor are synchronously triggered to collect grouting pressure data, soil pressure data and pore water pressure data respectively, and segmented grouting parameters are adjusted based on the soil pressure data and a soil pressure threshold value as well as the pore water pressure data and a stabilization time threshold value; a pressure diffusion quantitative model is constructed on the basis of synchronously collected grouting pressure data, soil pressure data and pore water pressure data, and grouting pressure distribution is obtained on the basis of the constructed pressure diffusion quantitative model. And the grouting efficiency can be improved.

Provided is a physical quantity detection device that can detect load information and a lateral acceleration for each wheel, the load information including information on not only a vehicle weight but also occupants and a load weight, allows damper control for separating controlling four wheels, and can provide a lateral force calculated with high accuracy. The physical quantity detection device according to the present invention calculates a lateral force, using a load detected in real time by a strain sensor and a lateral acceleration detected from characteristics of a sensor signal waveform, detects the load from a magnitude of a strain peak amplitude, and detects the lateral acceleration from a difference between a magnitude of the strain peak amplitude at the time of making a turn (at the time of the lateral acceleration being applied) and a magnitude of the strain peak amplitude at the time of traveling straight ahead.

The invention relates to the technical field of coal mine rock burst monitoring, in particular to coal mine rock burst monitoring and early warning equipment which comprises a main cable and further comprises a closed structure connected with the main cable, the closed structure comprises an expansion plugging mechanism, the expansion plugging mechanism is connected with a nailing mechanism, and the expansion plugging mechanism is connected with an anti-impact hydraulic mechanism; the hole entering and discharging structure is connected with the main cable and comprises a traction robot, the traction robot is connected with a sleeve frame, the sleeve frame is connected with a plurality of sets of rectangular sleeves, the rectangular sleeves are connected with a set of connecting sleeves through first active telescopic rods, supports are connected into the connecting sleeves through sleeve bodies, and the supports are fixedly connected with pressure sensors. Through cooperation of the sealing structure and the in-hole discharging structure, the device is suitable for drilling holes in different extending directions, fixed-point data collection at different positions in a coal mine is facilitated, the safety and durability of the coal mine are improved, and early warning operation on follow-up rock burst is facilitated.

An apparatus (1) for connecting an implement to a work machine has a pivoting device (2) by means of which an implement connecting device (4) can be pivoted relative to a work machine connecting device (3) about a pivot axis, wherein the pivoting device (2) has a hollow cylinder, a piston shaft which is mounted pivotably about the pivot axis in the hollow cylinder, and an annular piston sleeve which is mounted displaceably in an axial direction along the pivot axis between the hollow cylinder and the piston shaft. The piston shaft has, successively in the axial direction between the two radial bearings, an annular piston sleeve sliding section with a sliding section diameter and the piston shaft engagement section with an engagement section diameter (DE) which is greater than the sliding section diameter (DG). A torque measuring device is arranged on or in the piston shaft in the piston shaft engagement section, by means of which torque measuring device a torque characteristic variable for a torque acting on the piston shaft can be detected.

A load sensing assembly for a spinal implant includes a set screw having a central opening that extends from a first end of the set screw toward a second end of the set screw. The second end of the set screw is configured to engage with an anchoring member. The load sensing assembly includes an antenna, an integrated circuit in communication with the antenna, where the integrated circuit is positioned within the central opening of the set screw, and a strain gauge in connection with the integrated circuit. The strain gauge is located within the central opening of the set screw in proximity to the second end of the set screw.

A method and device for determining pressure applied to a robot foot device by leveraging deformation parameters of cantilever devices. The method includes obtaining a deformation parameter representing the deformation state of at least one cantilever device when subjected to pressure, determining the target position on the robot foot where the pressure is applied, and calculating the corresponding target pressure. The determination process involves utilizing predefined pressure correspondence relationships that map deformation parameters to positions and pressure ratios. The invention also provides a device with a processor and memory to execute the method, a legged robot incorporating the device, and computer-readable media containing instructions for implementing the method. This innovation enables precise pressure detection and localization for enhanced robotic performance and adaptability.

The invention relates to a measurement roller and to a method for producing a measurement roller in order to measure at least one property, in particular the strip tension, the strip temperature, or the like, of a product being guided over the measurement roller, comprising a measurement roller body (11) which forms a circumferential surface (13) of the measurement roller, wherein the measurement roller has at least one sensor assembly (14), and the sensor assembly is formed from at least one recess (15) which is made within the circumferential surface and in which at least one sensor is received. The recess is designed to be closed by a cover (22) of the sensor assembly so as to be flush with the circumferential surface, and the cover is operatively connected to the sensor in a mechanical manner. The cover is bonded to the measurement roller body, and the cover is formed with a wall (23) on the circumferential surface.

The application discloses a kind of PCCP pipe wire winding process in steel wire absolute stress monitoring sensor installation method, first in sensor connecting line place pre-installed special protective sleeve, flange structure is welded to dry powder cylinder;Pre-embed sensor into prestressed steel beam, start wire winding process, when steel wire is wound to sensor pre-buried hole, sensor is sent out by rotating flange structure;Sensor moves with steel wire, just with the embedding of steel wire winding in reserved hole, complete the installation of this sensor.Repeat the above steps to complete the remaining sensor installation work.The PCCP pipe wire winding process in steel wire absolute stress monitoring sensor installation method provided by the application overcomes the shortcomings in the prior art installation technology, has little effect on the original PCCP pipe quality, avoids the inconvenience caused by sensor connecting line to PCCP pipe production and construction, and realizes the convenient, orderly and efficient installation of electromagnetic elastic absolute stress sensor in PCCP pipe winding process.

Provided is a physical quantity detection device capable of not only measuring tire air pressure without using a sensor component other than a strain sensor, but also detecting a load and wear from a strain signal corrected using information on the tire air pressure. The physical quantity detection device according to the present invention detects air pressure of a tire at a reference level of a signal waveform of the strain sensor, and detects a load and wear of the tire from a strain signal corrected by the air pressure of the tire. The physical quantity detection device according to the present invention holds a reference value stored in a storage unit as a table, and detects each physical quantity by comparison with the reference value.

According to the present invention, a strain sensor (100) installed inside a device under test comprises a flat plate-form distortion-inducing plate (F), a strain gauge (112) affixed to the distortion-inducing plate, and a pair of protruding parts (PI, P2) that protrude from the distortion-inducing plate toward both sides along an in-plane direction of the distortion-inducing plate. The strain gauge is affixed to a region (SC) of the distortion-inducing plate that is sandwiched between the pair of protruding parts.

A sensor device (1) formatted as a screw, nail or pin. The device comprises a head (10), a shaft (14). A battery cell (50) and a wireless transmitter (46) are accommodated in the head (10) or shaft (14). An antenna (15) for wireless communication is formed integrally in the head (10). A conductor (16) is provided for wired data communication and electrical power transmission between the wireless transmitter (46) and the antenna (15). A sensor housing (40) is arranged in the shaft (14) and accommodates a strain gauge (45). The shaft (14) has an end portion with a contact surface (29) through which external force is transmissible onto the sensor housing (40), which is constructed so that it deforms responsive to the external force. The external force is thus transmitted onto the strain gauge (45).

A torque estimation device (8) includes: a current value obtaining unit (7) for obtaining a current value of a drive unit (30) of an actuator (3) included in a wind turbine (101); a storage unit (81) storing correspondence information representing correspondence between a torque occurring in a drive shaft (33) of the drive unit (30) and the current value; and an estimation unit (83) for estimating the torque occurring in the drive shaft (33) based on the current value obtained by the current value obtaining unit (7) and the correspondence information.

Sensing Tension in a Rope A sensor assembly (106) for sensing tension in a rope (102) comprises a housing (301), a force sensor (302), and a controller (303) for controlling the force sensor (302). The force sensor (302) is arranged for sensing a mechanical force applied to a resiliently deflectable portion (307) of the housing (301). The force sensor (302) is located within an interior (305) of the housing (301) and non-fixedly held in contact with inner walling (306) of the interior (305), in the region of the resiliently deflectable portion (307) of the housing (301). A tethering assembly (101) comprising a rope (102) and a sensor system (103) that comprises the sensor assembly (106). A method of sensing tension in a rope comprising locating the sensor assembly (106) within the rope (102) and operating the sensor assembly (106) to sense tension in the rope (102).

A system and a method include a component formed of a material. The component has one or more first holes. A test piece is formed of the material. The test piece has one or more second holes. A first tool is configured to insert one or more first fasteners into one or both of the first hole(s) or the second hole(s). A second tool is configured to insert one or more second fasteners into one or both of the first hole(s) or the second hole(s). One or more force sensors are coupled to one or both of the component or the test piece. The force sensor(s) are configured to detect (a) one or more first aspects of one or more first forces exerted during operation of the first tool to insert the first fastener(s) into one or both of the first hole(s) or the second hole(s), and (b) one or more second aspects of one or more second forces exerted during operation of the second tool to insert the second fastener(s) into one or both the first hole(s) or the second hole(s). A control unit is in communication with the force sensor(s), and is configured to correlate the first aspect(s) of the first force(s) with the second aspect(s) of the second force(s).

A six-axis force torque transducer (FTT) includes a hub and at least one bending beam disposed on the hub and extending outward from the hub. Each of the at least one bending beam includes a U-beam having a substantially U-shaped cross section and at least one beam plate attached to the U-beam at a portion of the U-beam remote from the hub. A first strain gauge support including at least one strain gauge is mounted on an outer surface of the at least one U-beam. A second strain gauge support including at least one strain gauge is mounted on an outer surface of the at least one beam plate. A connecting element electrically connects the strain gauge of the first strain gauge support and the strain gauge of the second strain gauge support in a bridge configuration.

The invention relates to a tool for fixture hardening of a preferably rotationally symmetrical component, comprising at least one quenching mandrel which is designed to be inserted into an opening of the component during fixture hardening, and at least one clamping insert which is designed to be inserted into the opening of the component during fixture hardening, according to the invention, the clamping block is designed to exert a pressure on the component from the outside in the radial direction during the clamp hardening, at least one clamping block and / or the hardening mandrel having at least one sensor, preferably a pressure sensor, by means of which a force exerted on the component by the tool during the clamp hardening can be measured. By instrumented configuration of the tool, the force acting on the component can be determined directly and indirectly.

A method and device for determining a pressure, robot, medium and product, relate to the technical field of robots, where the method includes: obtaining (S11) a deformation parameter corresponding to at least one cantilever device on a robot foot device, where the deformation parameter represents a deformation state of the cantilever device generated in a case where the robot foot device is subjected to the pressure; determining (S12) a target position where the robot foot device is subjected to the pressure according to the deformation parameter; and determining (S13) a target pressure corresponding to the target position according to the deformation parameter and the target position.

The application discloses a device for measuring ground stress of a fault fracture zone, which comprises a PVC pipe, a hollow connecting rod, an automatic telescopic pressure test assembly, a hydraulic lead and a pressurizing assembly. The PVC pipe is placed in a test hole for putting the hollow connecting rod and the automatic telescopic pressure test assembly into the test hole. The hollow connecting rod is connected with the automatic telescopic pressure test assembly. The automatic telescopic pressure test assembly is connected with the hydraulic lead and the pressurizing assembly. The application further discloses a use method of the device for measuring ground stress of a fault fracture zone. Compared with the prior art, the device for measuring ground stress of a fault fracture zone can effectively measure the ground stress of the fault fracture zone, and has the advantages of simple operation and convenient recovery.

The invention discloses a drill hole plane stress measurement method based on hole circumference relative displacement change. The method comprises the following steps: step 1, drilling a to-be-measured drill hole at a preset position to a preset measurement depth; 2, a mounting hole is concentrically drilled in the bottom of the drill hole, and a plurality of deformation meters used for measuring the relative displacement of the hole periphery are mounted on the hole periphery of the mounting hole; and step 3, the sleeve core is adopted to remove the to-be-measured drill hole, the relative displacement change of the periphery of the deformation meter mounting hole is obtained through the deformation meter in the removing process, and the plane stress state of the rock around the to-be-measured drill hole is obtained through relative displacement calculation. The method is simple in measurement and high in anti-interference capability, and the stress state of the drill hole can be calculated only by testing the relative displacement of three points around the hole.

The present invention provides a physical quantity detection device capable of detecting load information and a lateral acceleration for each wheel, achieving independent damper control for each of four wheels, and providing a lateral force calculated highly accurately, the load information including not only a vehicle weight but also occupant and loading weights. A physical quantity detection device according to the present invention calculates a lateral force by using a load detected in actuality by a strain sensor and a lateral G detected from the characteristics of a sensor signal waveform. The load is detected from the magnitude of a strain peak amplitude, and the lateral G is detected from a difference in magnitude of the strain peak amplitude between turning (when lateral G is applied) and straight-ahead driving.

The invention belongs to the field of crustal stress measurement, and provides a crustal stress measurement method based on a nonlinear mechanical theory, which comprises the following steps: firstly, measuring a stress-strain curve of a strain hardening material to obtain mechanical parameters, and then constructing a measurement platform comprising a concrete cube, an elastic-plastic thick-wall cylinder and a precise range finder; the thick-wall cylinder is embedded into a concrete through hole and is internally provided with a precise range finder to monitor the change of the inner diameter. A compression test is carried out through multiple groups of horizontal pressure stresses, numerical simulation is combined, and a nonlinear model about the horizontal pressure and mechanical parameters and geometric parameters of the thick-wall cylinder is constructed by applying a Bayesian neural network and a data augmentation technology. The method comprises the following steps: placing a crustal stress observation instrument in an underground soft rock area or a fracture zone deep hole, continuously monitoring the change of the inner diameter of a thick-wall cylinder after coupling with concrete, and determining maximum and minimum principal stress and directions according to a nonlinear model; by means of the method, scientific and technical support can be provided for deep ground scientific exploration and underground engineering construction.

This invention belongs to the field of pile foundation construction technology, specifically a pile foundation construction device and method for the collapsed section of a bored pile. It includes a foundation, with a protective casing inserted inside. A grouting hole is formed inside the foundation, and a support member is connected to the inside of the grouting hole via an adjustment mechanism. An annular groove is formed on the surface of the support member, and a detection platform is slidably connected to the inner wall of the groove. A sealing ring is fixedly installed on the surface of the support member. The support member and the detection platform are placed at the bottom of the grouting hole via the adjustment mechanism. The sealing ring prevents liquid from entering the platform from the grouting hole, thus avoiding damage to the pressure sensor. When the pressure sensor is compressed, it transmits a signal to a ground alarm device, alerting workers to the collapse. Furthermore, based on the pressure data returned by the pressure sensor, a small pressure reading indicates a small-scale collapse, while a large pressure reading indicates a large-scale collapse, allowing for the development of different repair plans.

A system and a method include a component formed of a material. The component has one or more first holes. A test piece is formed of the material. The test piece has one or more second holes. A first tool is configured to insert one or more first fasteners into one or both of the first hole(s) or the second hole(s). A second tool is configured to insert one or more second fasteners into one or both of the first hole(s) or the second hole(s). One or more force sensors are coupled to one or both of the component or the test piece. The force sensor(s) are configured to detect (a) one or more first aspects of one or more first forces exerted during operation of the first tool to insert the first fastener(s) into one or both of the first hole(s) or the second hole(s), and (b) one or more second aspects of one or more second forces exerted during operation of the second tool to insert the second fastener(s) into one or both the first hole(s) or the second hole(s). A control unit is in communication with the force sensor(s), and is configured to correlate the first aspect(s) of the first force(s) with the second aspect(s) of the second force(s).

A magnetic force measuring device includes a measuring body and a pressure gage. A center of the measuring body is provided with a longitudinal channel. A lifting system, an intermediate system, and a jacking block are arranged in the longitudinal channel. The pressure gage is associated with the intermediate system. Bottom surfaces of the measuring body and the jacking block are flush to form a same contact surface in contact with a magnetic module. One of the measuring body and the jacking block is magnetically conductive, and the other is not magnetically conductive. When subjected to an external action force, the lifting system can drive the intermediate system to move up or down in the longitudinal channel, to lift the jacking block upward or push the jacking block to jack up the measuring body. The pressure gage records a maximum stress value of the jacking block.

Provided is a physical quantity detection device capable of not only measuring tire air pressure without using a sensor component other than a strain sensor, but also detecting a load and wear from a strain signal corrected using information on the tire air pressure. The physical quantity detection device according to the present invention detects air pressure of a tire at a reference level of a signal waveform of the strain sensor, and detects a load and wear of the tire from a strain signal corrected by the air pressure of the tire. The physical quantity detection device according to the present invention holds a reference value stored in a storage unit as a table, and detects each physical quantity by comparison with the reference value.

The application provides a force gauge based on a magnetic grating displacement meter, a mass concrete stress monitoring structure constructed by using the force gauge and a monitoring method. The force gauge is composed of upper and lower force collecting discs, upper and lower force transmitting sheets, a force measuring block and a magnetic grating displacement meter. The top and bottom surfaces of the force measuring block are coaxially fixedly connected with the upper and lower force collecting discs through the upper and lower force transmitting sheets. A through hole is formed in the center of the force measuring block, and the magnetic grating displacement meter is arranged in the through hole. The force gauge is arranged in an isolation cylinder with flexible structures at both ends, then the measured concrete is poured into the isolation cylinder, and finally the isolation cylinder is buried in the measured concrete. The deformation of the center points of the top and bottom surfaces of the force measuring block is measured by the magnetic grating displacement meter, and the stress value of the measured concrete is calculated. The stress value of the concrete measured by using the monitoring structure and method is close to the real stress value of the concrete, and the real and reliable stress data support is provided for the safe operation state of the mass concrete structure.

The application discloses a coal seam drilling stress monitoring device, which comprises a drilling stress meter, a three-dimensional angle sensor and a connecting assembly with a closed positioning cavity. One end of the connecting assembly is fixedly connected with the coaxially nested drilling stress meter by magnetic attraction. The connecting assembly and the drilling stress meter can be separated. The drilling stress meter only needs to be left in the drilling hole, and the three-dimensional angle sensor can be pulled out of the drilling hole together with the connecting assembly, so that the monitoring cost is lower. The three-dimensional angle sensor is horizontally fixed in the positioning cavity. The whole push rod only needs to directly push the connecting assembly provided with the drilling stress meter to the specified position of the coal seam drilling hole, so that the problem of inaccurate monitoring caused by the threaded connection of multiple push rods is solved, and the monitoring is more accurate. Therefore, the coal seam drilling stress monitoring device can accurately and low-costly monitor the coal seam drilling.

To provide a torque estimation device and a method for estimating a torque which can estimate a torque of a shaft of a yoke actuator.SOLUTION: A torque estimation device includes: a current value acquisition unit for acquiring a current value when a current is applied to a driving unit of an actuator provided in a windmill; a strain amount acquisition unit for acquiring a strain amount of a bolt fixing the actuator to a fixation target part; a storage unit storing correspondence information indicating a correspondence among a torque generated in a driving shaft of the driving unit when a current is applied to the driving unit, the current value, and the strain amount; and an estimation unit for estimating a torque generated in the driving shaft on the basis of the current value acquired by the current value acquisition unit or the strain amount acquired by the strain amount acquisition unit, and the correspondence information.SELECTED DRAWING: Figure 2