19results about How to "Reliable measurement" patented technology

This invention discloses an internal bore measuring machine, including a base, a seat, and a top steel plate covering the seat; a transition roller track, including a roller assembly and a gantry frame; a positioning device, including a frame, a top plate, a lifting cylinder; a rear inspection mechanism, including a fixed frame, a transverse movement mechanism and a transverse linear slide rail mounted on the fixed frame, a reciprocating measuring mechanism mounted on the transverse movement mechanism; a control cabinet with a built-in PLC as the main controller; a cantilever operation box assembly is provided on one side of the control cabinet, the cantilever operation box assembly including a cantilever, an operation box, and an enclosure assembly consisting of a front enclosure and two side enclosures respectively placed on both sides of the front enclosure, with a U-shaped cross-section, placed on the base and with the U-shaped opening fastened to the control cabinet, enclosing the positioning device and the gantry frame. This invention solves the problems of poor coordination of existing automatic detection and conveying, low efficiency of step-by-step detection, and insufficient rigidity.

A sensor element for detecting angular velocity about a detection axis perpendicular to a plane of the sensor element is disclosed. The essentially planar sensor element comprises two primary masses and two Coriolis masses, and two sensing cells. The sensor element further comprises two coupling levers each coupled to the two primary masses by first springs and to one of the two Coriolis masses by second springs, the coupling levers enabling the two primary masses and the two Coriolis masses to be excited into a combined primary motion occurring in the plane of the essentially planar sensor element. In the combined primary motion, the direction of the angular momenta of linear primary oscillation motions of the primary masses and angular momenta of rotational primary motions of the coupling levers with respect to the geometrical centroid of the sensor element is opposite to the direction of the angular momenta of linear primary oscillation motions of the Coriolis masses with respect to the geometrical centroid of the sensor element.

The invention provides an inspection device which can reliably measure a special-shaped part such as an inclined surface of a wafer in a space-saving manner. An inspection apparatus (100) includes an outer peripheral illumination unit (11, 111) that illuminates an outer peripheral region (AP) of a target wafer (WA), and an outer peripheral image capturing unit that captures an image of the outer peripheral region (AP) of the wafer (WA), the outer peripheral illumination unit (11, 111) having an arc illumination unit (11a, 111a) that is disposed along a partial region of a circumference (CI) and that illuminates a predetermined region (A1) on a reference axis (SA), and the arc illumination unit (11a, 111a) being disposed along a partial region of the circumference (CI) and that illuminates the predetermined region (A1) on the reference axis (SA). The circumference (CI) is centered on a reference axis (SA), and the reference axis (SA) of the arc illumination portions (11a, 111a) extends in a direction intersecting a tangential direction in which the outer peripheral portion (UA) of the wafer (WA) extends.

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 discloses a water depth detection method, device, equipment and medium. The method comprises the following steps: acquiring a transmission position of an active source and a receiving position of a passive source; determining a middle point between the active source and the passive source according to the transmission position and the receiving position, and taking the middle point as a water depth point to be detected; acquiring an excitation time of multiple seismic waves excited by the active source and a first arrival time of each seismic wave received by the passive source; and calculating a seawater depth of the water depth point to be detected according to the transmission position, the receiving position, the excitation time of each seismic wave and the first arrival time. The embodiment of the application can improve the accuracy and efficiency of detecting the seawater depth.

The utility model discloses a transformer sound level measurement auxiliary device, which comprises a plurality of sound level probes used for acquiring sound signals of a transformer, and further comprises a probe bearing frame covering the periphery of the transformer, and the plurality of sound level probes are arranged along the circumferential direction of the probe bearing frame. The sound level probes are located on the same horizontal plane, and the distances from the sound level probes to the outer surface of the transformer are equal. According to the utility model, the problem of inconsistent measurement distances caused by positioning deviation in traditional manual measurement is effectively solved, and the accuracy and reliability of measurement data are ensured; secondly, the sound level meter does not need to be held manually or the position of the measuring head does not need to be adjusted frequently, the electric shock safety risk possibly faced by manual operation under the electrified working condition is greatly reduced, and the personal safety of operators is guaranteed; and multiple measuring points can be measured at the same time, so that the condition of long time consumption of a single test caused by manual switching measurement of multiple measuring points in the prior art is changed, and the detection efficiency is greatly improved.

This invention discloses a scalable distributed multi-chamber open-path photosynthetic measurement system and method, relating to the field of plant physiological and ecological measurement technology. The system includes a main unit and at least two distributed chambers. The main unit centrally manages gas supply, concentration mixing, flow control, and high-precision concentration differential analysis. Each chamber is an independent unit, equipped with an adjustable LED light source, thermoelectric temperature control module, multiple types of sensors, independent power supply, and wireless communication module. An open path is formed through the gas supply pipeline and the return pipeline. The core of the method lies in the main unit polling and sampling the return gas from each chamber according to a preset program through a multi-channel automatic switching valve group. Combined with a "flushing stabilization" strategy, a single gas analysis unit is used to achieve high-precision, high-throughput parallel measurement of multiple chambers. This invention solves the problems of low throughput and high cost of traditional open-path instruments, achieving a balance between high precision and high throughput, and supports in-situ deployment in the field and remote monitoring.

The application discloses a portal crane sling positioning plate mounting method, belongs to the related technical field of the sling, and is characterized in that the upper surface of the sling is provided with front and rear positioning plates at both ends; a front scanner scanning surface intersects with the rear positioning plate, the rear positioning plate surface is inclined forward, namely, the rear is high and the front is low, and the vertex of the rear positioning plate scanned by the front scanner is a front scanner positioning plate detection point; a rear scanner scanning surface intersects with the front positioning plate, the front positioning plate surface is inclined backward, namely, the front is high and the rear is low, and the vertex of the front positioning plate scanned by the rear scanner is a rear scanner positioning plate detection point. The application is used for solving the technical problems of the prior art, such as water accumulation in the positioning plate, poor detection reliability of the positioning point and poor shielding performance.

The invention discloses a fish body length measuring method and system. The method is realized based on geometric measurement and statistical model fusion. According to the method, stable and reliable fish body length measurement under the conditions of complex fish body postures and segmentation errors is realized by constructing a two-channel length estimation method of a geometric measurement and area statistics model and combining a shape quality index-based adaptive fusion mechanism. Specifically, geometric measurement length is obtained through fish body contour extraction and skeleton analysis, a statistical length estimation model is constructed based on fish body area and shape features, and area estimation length is obtained. In order to improve the stability of the system in a complex scene, a self-adaptive fusion mechanism based on a shape quality index is further constructed, indexes such as fish body contour integrity, contour smoothness and a region filling rate are evaluated, and a measurement credibility weight is calculated; and carrying out adaptive fusion on the geometric measurement result and the area estimation result according to the weight to obtain a final fish body length estimation value.

This application provides an ion implanter, including a vacuum chamber, a temperature probe, and a lead tube. The vacuum chamber contains a target disk for supporting a wafer. The temperature probe includes a temperature sensor, a metal shield, and a cable. The temperature sensor is a non-contact type, mounted on the inner wall of the vacuum chamber and aligned with the surface of the wafer supported on the target disk. The metal shield covers the outside of the temperature sensor to shield it from interference from the ion beam. The cable transmits power and signals to the temperature sensor. The lead tube, a tubular structure, extends through the vacuum chamber to lead the temperature probe cable to the outside of the vacuum chamber. This application's technical solution enables real-time, reliable, and accurate temperature monitoring of the wafer supported on the target disk, ensuring that operators can promptly obtain the wafer's true temperature status and take rapid action in case of abnormal temperature increases to prevent damage to the wafer.

The application discloses a standard nozzle flow calibration method for an aero-engine, which uses two measured nozzles in a laboratory environment as traceable standards and uses an oil line communicator to connect and calibrate, the oil line communicator is a symmetrical U-shaped pipeline, the middle part is connected with an oil supply pipeline, and the two ends of the U-shaped pipeline are provided with internal thread holes, the flow of the traceable nozzle and the working standard nozzle on the oil line communicator is compared, the relative error is calculated, and the flow value of the working standard nozzle in the simulation laboratory is converted, the application provides a reliable aero-engine fuel nozzle calibration method, the flow of the nozzle can be measured in a non-laboratory environment, the measurement is reliable and stable, and the efficiency of nozzle flow measurement is greatly improved.

The application discloses a depth measurement method and device of a target object, a computer device and a storage medium. The method comprises the following steps: when it is detected that a projection device projects structured light to a target object according to a preset structured light mode, an image of the target object obtained by a camera is received; phase encoding information of the target object is determined according to the image; a first depth of the target object is calculated by using the phase encoding information; an edge of the structured light in the image is obtained; encoding information based on the edge is constructed to obtain edge encoding information; a second depth of the target object is calculated according to the edge encoding information; and a target depth of the target object is determined from the first depth and the second depth according to a preset screening condition. Therefore, the measurement accuracy requirement can be flexibly adjusted, and when the pixel gray value of the structured light is abnormal, the edge of the structured light still has good distinguishability, the edge-based encoding information can be used to realize reliable measurement of the abnormal pixel value area, and the measurement accuracy of the depth of the target object is improved.

The invention discloses an air-drop height, wind speed and wind direction measuring device and method of an anti-impact retractable structure, and belongs to the technical field of atmosphere data measurement and air-drop equipment. The invention aims to solve the problems of poor impact resistance, low response speed and large volume and weight of the existing measuring device in an air-drop environment. The retracting and releasing device, the wind direction measuring unit and the pressure difference measuring device are highly integrated, so that the device can push the wind direction measuring unit to an optimal measuring position in an air-drop flight measuring stage and perform real-time atmosphere information acquisition and feedback, and the device is quickly retracted into a cabin in a landing stage, so that the measuring device is prevented from destructive impact. Through the unique structural design, the measuring device can feed back accurate and reliable atmosphere information in real time in an extreme air-drop environment so as to adjust a flight strategy, meanwhile, the measuring device has high impact resistance, and the service life of the measuring device is prolonged.

This invention relates to the field of precision measuring instruments, and discloses a high-precision roller spherical base surface measuring device and method. The high-precision roller spherical base surface measuring device includes: a measuring instrument body, a measuring head mounted on the measuring instrument body, a clamping mechanism, an identification measuring mechanism, and a control terminal; the clamping mechanism includes: a clamping component, a rotation drive component, and a pre-support component. The clamping component is mainly used to clamp the roller to be measured, and the rotation drive component is connected to the clamping component, mainly used to drive the clamped roller to rotate around a theoretical axis. This invention automatically identifies the roller size and determines the optimal clamping parameters through machine vision, and combines three-dimensional scanning to calibrate the clamping posture in real time. It can dynamically generate an adaptive measurement path based on the measured deviation, effectively solving the system error problem caused by inconsistent clamping in traditional measurements, significantly shortening the measurement time for a single piece, and achieving efficient and reliable measurement of the tapered roller spherical base surface with micron-level accuracy.

The invention relates to a dynamic calibration system and method for a flexible pressure sensor. The system comprises a signal generation device, a fixing device, a standard accelerometer, a standard vibrator and a data acquisition and judgment device, the fixing device comprises a first fixing device and a second fixing device; the bottom of the first fixing device is contacted and fixedly connected with the upper surface of the standard vibrator, one surface of the calibrated flexible pressure sensor is contacted with the top of the first fixing device, and the other surface of the calibrated flexible pressure sensor is contacted with the second fixing device and is fixed through the second fixing device; the standard accelerometer is installed in the first fixing device. The method comprises the following steps: adjusting the second fixing device based on the system, so that the pre-tightening force between the calibrated flexible pressure sensor and the standard vibrator reaches a set value; and performing frequency calibration and acceleration calibration on the calibrated flexible pressure sensor based on the dynamic calibration system. The dynamic calibration system and method for the flexible pressure sensor are realized.

The present application relates to the technical field of communication cable parameter measurement, and particularly relates to an experimental device for obtaining a strain compensation coefficient, an operation method of the experimental device and a coefficient obtaining method. The experimental device comprises a monitor, a first fastening member, a second fastening member, reinforcing members and a weighting assembly. The monitor is used to obtain the Brillouin frequency shift of an optical fiber. The first fastening member is provided with at least two first connecting portions arranged at intervals. The second fastening member is connected with the first connecting portions to form a fastening gap with the first fastening member for pressing the optical fiber. The reinforcing members are connected with the second fastening member one by one. Each reinforcing member is connected with the first fastening member. The reinforcing member is further provided with a second connecting portion for connecting with an armored portion. The weighting assembly is used to connect with the optical fiber between two adjacent fastening gaps to provide different weights. The present application can obtain a more accurate strain compensation coefficient to make the measurement result more reliable in the process of directly measuring the strain of the armored optical fiber.

The utility model relates to automatic detection equipment for an electric vehicle charger, which comprises an external connecting piece and a detection main body arranged at the upper end of the external connecting piece, a touch display screen, a direct current parameter measuring instrument, an electronic load instrument and a circuit breaker switch are arranged on the side edge of the detection main body, and a flame-retardant glass cover is arranged at the upper end of the detection main body. The surface of the upper end of the detection main body is provided with an input interface and a power supply port, the input interface and the power supply port are arranged in the flame-retardant glass cover, the external connection piece is externally connected with a battery pack and an explosion-proof box, the touch display screen is internally connected with a PLC controller, the direct current parameter measuring instrument is electrically connected with the input interface, and the power supply port is electrically connected with the power supply port. And a plurality of input interfaces are provided. The automatic detection equipment for the electric vehicle charger is reasonable in structure, convenient to operate, high in automatic detection capability, accurate and reliable in measurement, high in precision and capable of accurately calculating parameters such as current, time and electric quantity, and safety is guaranteed during detection.

The utility model discloses a nondestructive testing device for detecting the diameter of steel bars in concrete, which comprises an annular rotating support, at least three detection units evenly distributed along the circumference of the annular rotating support, a servo motor for driving the annular rotating support to rotate, a signal processor electrically connected to the detection units, an operating handle mounted on the top of the annular rotating support, and a hydraulic linkage leveling base assembly. The detection unit comprises a coaxially arranged electromagnetic sensor and an ultrasonic transducer. The top of the hydraulic linkage leveling base assembly is rigidly connected to the bottom of the annular rotating support, and the bottom surface of the hydraulic linkage leveling base assembly constitutes the working bottom surface of the device. The nondestructive testing device has the advantages of significantly improved detection accuracy, strong surface adaptability, strong anti-interference capability, stable signal transmission, convenient and flexible operation, high detection efficiency, stable and reliable coupling effect, and the like.

The invention discloses a system for measuring a material level state by using microwave intensity, and the system comprises a microwave transmitter which is used for transmitting microwaves with preset intensity; the microwave probe is arranged opposite to the microwave emitter and is used for receiving direct microwaves which are emitted by the microwave emitter and penetrate through a material layer to be detected and converting intensity signals of the received microwaves into electric signals; the microcomputer is connected with the microwave probe and is used for receiving the electric signal and calculating the thickness of the material layer based on the attenuation characteristic of the microwave in the detected material layer so as to determine the state of the material level; the display unit is connected with the microcomputer and is used for displaying a processing result of the microcomputer; and the central control computer is connected with the microcomputer and is used for transmitting a processing result to the central control computer. According to the invention, the problems that the signal of the traditional level gage is easily interfered, the equipment is easily damaged and the traditional level gage depends on manual work are solved, and high-reliability, high-precision, strong-adaptability and intelligent continuous level monitoring is realized.