45results about "Electrical/magnetic length/width measurements" patented technology

Conveyor system comprising a conveyor chain with a plurality of connected chain links and a support structure arranged for supporting the conveyor chain. The conveyor chain is arranged as an endless conveyor chain structure configured for moving relative to the support structure in a transporting direction. The conveyor chain comprises a first detection element and a second detection element, where the first detection element and the second detection element are separated from each other along the conveyor chain. The conveyor system comprises a first sensor unit and a second sensor unit arranged in positions relative to the conveyor chain where simultaneously the first detection element is adjacent to the first sensor unit and the second detection element is adjacent to the second sensor unit. The first sensor unit is configured for detecting an initial passage of the first detection element at an initial time, and the second sensor unit is configured for detecting an initial passage of the second detection element at the initial time. The first sensor unit is configured for detecting a following passage of the first detection element at a detection time after the initial time, and the second sensor unit is configured for detecting a following passage of the second detection element at the detection time after the initial time. The conveyor system is configured for determining a first time offset between the initial passage of the first detection element and the initial passage of the second detection element, and determining a second time offset between the following passage of the first detection element and the following passage of the second detection element, where a difference between the first time offset and the second time offset is indicative of a deviating condition of the conveyor chain.

The utility model discloses a counter weight mechanism of a meter counter, which comprises a meter counter body and a counter weight mechanism used for increasing the weight of the meter counter body, rollers are arranged on two sides of the meter counter body, fixing blocks are arranged at four corners of the bottom of the meter counter body, fixing holes are arranged on the fixing blocks, and the meter counter body and the counter weight mechanism are arranged on the bottom of the meter counter body. The counterweight mechanism comprises a mounting plate and a counterweight block mounted on the mounting plate, one end of the mounting plate is bent to be provided with a hook part, the top and the bottom of the hook part are each provided with a plurality of first kidney-shaped holes, and the two sides of the surface of the middle of the mounting plate are each provided with a plurality of second kidney-shaped holes; the surface of one end, deviating from the hook part, of the mounting plate is provided with a mounting hole matched with the fixing hole, and one end, deviating from the hook part, of the surface of the mounting plate is provided with a plurality of first assembling holes. Therefore, the friction force between the roller and the measured object is improved, and the measurement precision of the meter counter body is effectively improved.

This utility model discloses a length measuring device for metal liner processing, relating to the field of metal liner processing. It addresses the problem in existing technologies where, when the measured dimension deviates significantly from the target dimension, the measurement error cannot be indicated, resulting in a lack of flexibility and convenience. An error indication block is provided on the upper end of one side of the inner frame, and a first contact switch is installed inside the error indication block. An inner sliding groove is formed in the middle of the upper surface of the lower sliding block, and an inner fixing rod is fixed inside the inner sliding groove. A pressing sliding block is slidably connected to the inner sliding groove along the outside of the inner fixing rod. A pressure spring is fixed between the outer wall of the inner sliding groove and the pressing sliding block along the outside of the inner fixing rod. A second contact switch is installed on the outside of the pressing sliding block. A warning structure is installed on the outside of the outer frame, and the warning structure, the second contact switch, and the first contact switch form a series circuit.

A cable length measurement device, configured to: be connected a winding wheel and measure an extension or retraction length of a cable on the winding wheel, which includes a fixed shell, a rotating shell and a control panel. The rotating shell is rotatably connected to the fixed shell. The rotating shell is configured to be connected to the winding wheel and rotate around a rotation axis with the winding wheel. One of the fixed shell and the rotating shell is provided with a signal transmitter. The other one of the fixed shell and the rotating shell is connected to the control panel. The control panel is provided with a signal receiver. When the signal transmitter passes through the signal receiver, the signal receiver generates a counting signal, and the control panel receives the counting signal to calculate the extension or retraction length of the cable on the winding wheel.

Systems and methods are provided for monitoring properties of a web during a roll-to-roll manufacturing process. The methods may include moving the web past a first roller such that the web contacts the first roller, wherein the first roller includes a first contact strip formed of an electrically conductive material and extends circumferentially about the first roller, applying a voltage to the first contact strip while moving the web past the first roller, such that the voltage conducts through the web to a second contact strip, measuring the voltage received by the second contact strip, determining local resistance values relative to positions of the web based on the difference in the voltage applied to the first contact strip and the voltage received by the second contact strip, and determining at least one property of the web relative to the positions of the web based on the local resistance values.

A cylinder sensor assembly, a system, and a method of operating a piston-cylinder assembly. The sensor assembly may generally include a housing; a sensor supported by the housing and configured to sense a position of a piston relative to a cylinder; and a wireless transmitter supported by the housing and configured to output a communication signal representative of a sensed position of the piston.

The application relates to the technical field of sensors, in particular to a high-precision linear displacement and angular displacement system which comprises a metal object moving target, a detection device, a PCB circuit board and a planar coil, the planar coil is printed on the PCB circuit board, the planar coil comprises a transmitting coil and a receiving coil, the transmitting coil and the receiving coil are connected with the detection device, the transmitting coil comprises a transmitting coil one and a transmitting coil two, the receiving coil comprises an A-group receiving coil one and an A-group receiving coil two and a B-group receiving coil one and a B-group receiving coil two, the application is resistant to temperature drift, is very small in influence on environmental temperature change, is in time in signal response, is very suitable for dynamic signal detection, is stronger in anti-interference, is resistant to severe environment, is convenient for on-site debugging and software upgrading, is modularized in hardware, and is more suitable for hardware module replacement and upgrading.

The present invention discloses a speed measurement method and device for electromagnetic non-contact online length measurement of steel wire. Axial excitation devices and internal pass-through type magnetic detection sensors are arranged sequentially at intervals in the direction of the steel wire travel. The axial excitation device is excited with a narrow pulse voltage, and the inner-passing type magnetic detection sensor detects the wire circumference. The residual magnetism in the range is detected in real time, and when the magnetic zero point is detected, the control system Send a pulse excitation trigger command to start the next excitation and detection process and obtain the length measurement. The value is increased by a value corresponding to one length measurement pitch, and this is repeated until excitation is terminated. The present invention is a method for detecting the residual magnetism caused by the difference in the strength of the residual magnetism due to the change in the diameter or material of the steel wire to be detected. It solves the problem of deviation caused by wire deflection and signal instability caused by wire deflection, and allows for the use of thinner steel wires. Enables line detection and ensures correct pulse-to-pulse measurement through the traditional instrument calibration and debug process. By setting the interval length, highly accurate length measurement can be achieved.

The invention relates to the technical field of early warning devices, in particular to an intelligent monitoring and early warning system for an expansive red layer geological side slope, which comprises the following steps of: dividing an expansive red layer geological side slope area into a plurality of monitoring areas, and determining hydrological data, strain data, sound wave speed data and environmental data of the monitoring areas in a specified time period; determining a hidden risk area according to hydrological data, strain data and environmental data, and considering water permeation and deformation transmission blocking factors; according to the sound wave speed data and the strain data, the collaborative development degree of sound wave strain is determined, and the collaborative effect of damage evolution and deformation accumulation is quantified; and according to the sound wave speed data, the strain data and the hydrological data, determining a correlation transmission anomaly degree of water and force factors of each hidden risk area, analyzing water penetration and stress transmission anomaly, and according to the collaborative development degree and the correlation transmission anomaly degree, determining a deformation approximation degree of each hidden risk area so as to determine an early warning result. And the accuracy is improved.

Systems and methods are provided for monitoring properties of a web during a roll-to-roll manufacturing process. The methods may include moving the web past a first roller such that the web contacts the first roller, wherein the first roller includes a first contact strip formed of an electrically conductive material and extends circumferentially about the first roller, applying a voltage to the first contact strip while moving the web past the first roller, such that the voltage conducts through the web to a second contact strip, measuring the voltage received by the second contact strip, determining local resistance values relative to positions of the web based on the difference in the voltage applied to the first contact strip and the voltage received by the second contact strip, and determining at least one property of the web relative to the positions of the web based on the local resistance values.

The invention relates to a method for determining the wear state of a roller of a curve control unit for a container treatment machine, said curve control unit comprising a control curve, at least one roller which is movably guided along the control curve, and a measuring element which is guided together with the roller along the control curve, said control curve comprising a sensor device, wherein the roller is guided through the sensor device when running along the control curve, and a distance value between the measuring element and the sensor device is determined by means of the sensor device when the roller is guided through, and wherein a wear state of the roller is determined on the basis of the distance value.

The application provides a metal wire state detection method for detecting an abnormal state of a metal wire in a running state, comprising the following steps: when the metal wire is in the running state, a first eddy current sensor is controlled to move along an axial direction of a corresponding processing roller at a set speed; a detection signal collected by the first eddy current sensor is acquired, and it is determined whether the metal wire wound on the processing roller is in an abnormal state based on the acquired detection signal. The application can detect the abnormal state of the metal wire in the running state.

The invention discloses a magnetic suspension motor rotor detection mechanism, a detection method and electronic equipment. The mechanism comprises an eddy current sensor, a differential detection circuit, a digital potentiometer, an MCU (Microprogrammed Control Unit) and a resistance measurement loop which are symmetrically arranged. The digital potentiometer is controlled by the MCU to automatically complete zero position and full position calibration, so that the operation convenience is improved; the state of a sensor coil is monitored in real time by using a resistance measurement loop, fault diagnosis and online compensation based on a temperature coefficient are realized, the temperature drift is effectively inhibited, and the measurement precision is ensured; a rotor displacement signal and a Hall sensor detection angle are accurately extracted in combination with a differential amplification technology, and the reliability and stability of the system under complex working conditions are comprehensively improved.

The utility model discloses an emergency descent control device rope distance measuring device which comprises a descent control device body, a rope is arranged in the descent control device body, a box is arranged at one end of the rope, the inner wall of the box is rotationally connected with a rotating shaft, the outer side of the rotating shaft is fixedly connected with a wind-up roller, a Hall encoder is fixedly installed on the outer side of the wind-up roller, and the outer side of the rotating shaft is fixedly connected with a gear. A toothed plate is arranged below the gear, the bottom face of the toothed plate is fixedly connected with a magnetic block, one end of a rope is fixedly connected with a check block, a connector is arranged on the outer side of the check block, and a pressure sensor is fixedly installed on the connector. According to the rope distance measuring device, the rope drives the winding roller to rotate, the Hall encoder detects the number of rotation turns of the rotating shaft, the length of the rope can be judged, the rope distance can be measured, and when the stress of the pressure sensor is suddenly reduced, the electrified magnet is electrified to generate repulsive force to push the toothed plate and the gear to be meshed and clamped to limit rotation of the winding roller; the box body and the descent control device are matched to form a double-layer lock, so that the operation safety of workers is improved.

The invention relates to the technical field of semiconductor integrated circuits, and discloses an electrical test structure for measuring the effective width of a resistor segment, the resistor segment comprises a first width segment and a second width segment, one end of the first width segment far away from the second width segment is provided with a first end pole and a second end pole, a third end pole is arranged at the joint of the first width section and the second width section, a fourth end pole and a fifth end pole are arranged at the end, away from the first width section, of the second width section, and the first width section and the second width section are unequal in width. According to the electrical test structure provided by the invention, by introducing the resistor sections with different widths and the five-end structure, errors possibly introduced due to resistance thickness and material characteristic changes can be directly compared or calibrated; the five-end testing method is not only suitable for measuring resistors made of a single material or with a single thickness, but also suitable for resistors made of different materials and manufactured by different processes, the generalization ability is high, and the method can provide reliable and accurate effective width measurement results in various application scenes.

The application discloses a self-driven rotary detection sensor and a detection method, wherein a transmission distribution mechanism is used for transmitting rotary motion to a first speed increasing mechanism and a second speed increasing mechanism respectively according to the steering of the input rotary motion to accelerate the rotary motion; a first rolling friction power generation motion pair or a second rolling friction power generation motion pair is used for receiving the accelerated rotary motion and outputting a first triboelectric signal or a second triboelectric signal to a detection unit, so as to calculate the motion parameters of the rotary motion. The transmission distribution mechanism can accurately distinguish the steering of the rotary motion, and the triboelectric signal can be obtained without external power supply through the triboelectric technology, so that the motion parameters of the rotary motion can be measured.

The invention provides a residual line detection device and a residual line detection method for a mooring unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicles. The remaining wire detection device is installed on a wire wheel structure at the ground end and comprises a power supply module, a rotation detection module, a main control module and a communication module, and the wire wheel structure comprises a roller and a machine body; the power supply module supplies power to the device; the rotation detection module comprises a plurality of magnetic induction elements and two Hall sensors and is used for outputting pulse signals with phase differences when the magnetic induction elements pass through the Hall sensors in sequence; the main control module is used for receiving the pulse signal to accumulate the cable winding and unwinding length; and the communication module is used for uploading the cable take-up and pay-off length to the host after the ground end is started. According to the embodiment of the invention, under the condition of ensuring power supply and power failure of the system, the residual wire length can be accurately measured.

Conveyor equipment (1) comprising: - a transmission assembly (2) comprising at least one movement element (20) movable along a path; - a wear detection system (4) connected to said transmission assembly (2) and configured to detect the state of wear of said transmission assembly (2); wherein said detection system (4) comprises: - at least one first magnetic element (41a) and one second magnetic element (41b) arranged at a distance from each other on said movement element (20), - at least one electrical winding (42a, 42b), arranged on a respective ferromagnetic core, arranged to be not integral in motion with respect to said movement element, - at least one electric sensor (45) for each electrical winding, configured to detect one or more electrical properties, of the electric current induced by the relative motion between said at least one electrical winding (42a, 42b) and said first and second magnetic elements (41a, 41b), - at least one control unit (44), configured to estimate, as a function of the data detected by said electric sensor, the difference between the actual value of the distance between said first magnetic element (41a) and said second magnetic element (41b) and a predefined reference value of the distance between said first magnetic element (41a) and said second magnetic element (41b), so as to detect a state of wear of said transmission assembly (2).

A measurement system is provided that includes a probe housing, a field probe and an optical probe. The probe housing includes a sidewall, a cavity and a channel. The sidewall extends circumferentially around and axially along the cavity. The channel is radially outboard of the cavity and extends axially in the sidewall. The field probe includes a field sensor disposed in the cavity. The field sensor forms a sensor face. The optical probe is configured with an optical line of sight through the channel into a volume adjacent the sensor face.

A first aspect of the invention relates to a method for determining a stub length of a stub in a conductor track. The stub remains in a plated through-hole above an upper conductor layer to a lower conductor layer in the printed circuit board during back-drilling. The method comprises: - providing a specified back-drilling depth, - determining the actual back-drilling depth of a back-drilled borehole using a test finger by mechanically scanning a bottom of a blind hole produced during the back-drilling, and - determining the stub length on the basis of the difference between the actual back-drilling depth and the specified back-drilling depth.

The application provides an automatic batter measuring robot, which comprises a batter measuring hammer, a pin shaft sensor, a traction rope, a winch, a winch encoder and an electric control system, the first end of the traction rope is connected with the winch, the second end is connected with the batter measuring hammer, the batter measuring hammer is arranged opposite to the electrode shell, the winch drives the traction rope to be retracted and released under the control of the electric control system, the winch encoder sends the length information of the traction rope to the electric control system, the batter measuring hammer is lifted under the driving of the winch and then falls to hammer the upper surface of the electrode batter by gravity, the pin shaft sensor senses the in-place information of the batter measuring hammer in the process of repeated hammering, the length of the traction rope is determined through repeated measurement of the winch, the electric control system calculates the position information of the upper surface of the electrode batter through the length of the traction rope, so that the distance is automatically measured in the process of automatic batter hammering. The application can realize automatic batter measuring while automatic batter hammering.

The present invention relates to an odometer for distance measurement in an inspection and / or cleaning device, the odometer comprising a carrier (6) which is provided for rolling on a surface of a wall and which is designed to produce, by means of an associated magnet (11) and the magnetizable wall (5), a closed magnetic circuit. The invention also relates to an inspection and / or cleaning device comprising such an odometer (figure 1).

The invention relates to a weight correction monitoring and alarming method for cable laying, and the method comprises the steps: inputting a differential electric signal into a self-adaptive filtering module for real-time noise suppression, and outputting an anti-interference voltage signal sequence; the filtered voltage value is converted into a side pressure monitoring value through calibration of a conversion coefficient, an anti-interference side pressure monitoring value sequence is generated, cable displacement pulse signals are collected in real time through an incremental encoder, integral operation is conducted on pulse frequency through a pulse-meter conversion algorithm, and a laying length metering value accurate to the millimeter level is output. Monitoring a lateral pressure change curve after weight adjustment in real time, when continuous overrun duration reaches a preset time window threshold value, analyzing and judging a weight correction failure event based on moving average in a time window, responding to the weight correction failure event, and triggering a grading alarm signal bound with a failure node position coordinate, and generating an alarm log containing a failure position and an over-limit parameter.

A touch trigger probe with a capacitive sensor for measuring three degrees of freedom with a sensor base and a sensor head which is spaced to the sensor base by a flexible suspension and can be capacitively coupled to the sensor base, whereby the suspension enables a relative movement in three degrees of freedom of the sensor head with respect to the sensor base following a displacement (d) of a probe tip when contacting the object with the probe tip. The suspension and the sensor are adapted to each other in such a way that there is a bijective map between the three degrees of freedom measured by the sensor and all three translational degrees of freedom of the displacement (d) of the probe tip center (C).

An electromagnetic non-contact online meter counting and speed measurement method and device for a steel wire are provided. An axial excitation device and an internally pass-through magnetic-sensitive detector sensor are disposed sequentially at intervals in an advancing direction of a steel wire. When the axial excitation device is excited by a narrow pulse voltage, the internally pass-through magnetic-sensitive detection sensor detects remanence around the steel wire in real time. When a magnetic null point is detected, a control system sends a narrow pulse excitation trigger instruction to enable a next excitation and detection process, and increases a meter counting value by a value corresponding to one meter counting pitch. The excitation is performed cyclically until it is ended. It calibrates an error caused by diameter and material changes and vibration of a detected steel wire, and solves a problem of signal instability caused by vibration of the steel wire. The present disclosure also makes it possible to detect a steel wire of a smaller specification. Through conventional instrument calibration and debugging, a correct pulse interval length is set to achieve high-accuracy meter counting.

This invention relates to a non-contact object size measurement method, system, device, and storage medium, comprising the following steps: arranging RF transceiver equipment according to a pre-established relationship model between diffraction signals and moving objects, and measurement accuracy requirements; and processing the diffraction signals acquired by the RF transceiver equipment to obtain the size of the target moving object. This invention demonstrates for the first time that it is possible to accurately measure the size of objects using low-frequency, narrow-bandwidth WiFi signals. By establishing a relationship model between diffraction signals and moving objects, and by extracting the number of singularities in the diffraction signals to measure the object size, an astonishingly high accuracy (i.e., 2.6 mm) can be achieved, with robustness to environmental, material, and speed variations. This invention can be widely applied in the field of measurement technology.

The utility model relates to the technical field of cable measurement, in particular to a cable measuring device for electric power engineering construction, which comprises a detection table, a sliding support, a supporting shaft, a rigid bearing, a top shaft, a rotary encoder and a contact sleeve disc, the supporting shaft is fixedly connected to the top of the sliding support, the rigid bearing is mounted on the inner sides of the supporting shaft and the contact sleeve disc, and the top shaft is fixedly connected to the top of the sliding support. The top of the supporting shaft is sleeved with the contact sleeve disc, and the rotary encoder is installed in the middle of the top end of the top shaft. According to the cable measuring device for electric power engineering construction, the rotary encoder located on the top shaft and aligned with the central axis of the top shaft directly collects the number of rotation turns of the contact sleeve disc, converts the number of rotation turns into an electric signal and automatically calculates the length of the cable, manual tape measurement is completely replaced, the surface of the fine grinding disc is precisely ground and coated with a lubricant, and the measurement accuracy is improved. Sliding friction with the cable is greatly reduced, tension fluctuation caused by too large friction of a traditional compression roller is avoided, the hydraulic cylinder drives the fine grinding disc to dynamically adjust pressure, slipping is prevented, and the surface of the cable is prevented from being damaged by pressing.

The utility model discloses a digital display code-counting fishing line wheel disc, which comprises a fishing line wheel disc, a sensor and a digital display, the fishing line wheel disc comprises a line cup, an inner frame, a shell, a connecting frame and a crank, the sensor comprises an inductor and a plurality of induction magnetic blocks, a digital display screen is arranged on the top face of the digital displayer, and a chip and a battery are arranged in the digital displayer. The sensor is arranged on the fishing line wheel disc, induction information which is collected by the sensor and generated by the induction magnetic blocks and the inductor is transmitted to the chip for processing, and then the digital display screen displays length data released by the fishing line in real time, so that an operator can master the length data in real time; the beneficial effects of convenience, high efficiency, free folding and unfolding, scientificity and practicability are achieved; the superiority, creativity, innovativeness and practicability are embodied.