14results about How to "Solving Measurement Challenges" patented technology

The invention provides a non-power-cut test method for mutual inductance parameters of a power transmission line under excitation of different-frequency signals and a related device, and solves the problems of difficulty in accompanying stop and high safety risk of adjacent lines. The method comprises the following steps: selecting one circuit in the same corridor for power failure, connecting the head end with an induced electricity suppression device, and performing three-phase short-circuit grounding at the tail end; injecting a different-frequency sinusoidal current of 45-55Hz into the power failure line; the synchronous measurement device collects head and tail voltage and current of a running line based on a satellite synchronous clock; extracting pilot frequency signals through two-stage notch filtering and Fourier transform; and different-frequency zero-sequence self-impedance and mutual impedance are calculated and converted into power-frequency impedance. According to the invention, accurate test without power failure can be realized, and safety and power supply reliability are guaranteed.

The application discloses a slag quantity real-time identification method and system for automatic slag pouring of a converter, and comprises the following steps: S1, obtaining the real-time thickness of a slag layer at any horizontal position of a slag pouring area; S2, collecting a real-time planar image of the slag layer in the vertical direction of the thickness, multiplying the thickness of the slag layer by the area of the slag layer in the planar area within a time interval to obtain a micro-layer slag volume; S3, multiplying the micro-layer slag volume by the density and conversion coefficient of the slag layer to obtain a micro-layer slag quantity value, continuously accumulating the real-time slag quantity value of the micro-layer to obtain a total slag quantity value of the slag poured into a slag tank. The application can rapidly, timely and accurately measure, calculate and feedback the weight of the slag poured out.

This invention belongs to the field of impact resistance technology and discloses a wireless measurement method for high g-value acceleration during a collision process. The method includes installing a sensor and supporting circuitry; installing a transmitter and transmitting antenna; overload-resistant potting reinforcement of the measurement module; configuring a wireless receiving device for impact data; and performing acceleration data analysis and processing. This method, by installing a high-overload-resistant wireless transmission measurement device on an experimental model, achieves wireless measurement of acceleration data during the collision process, solving the problem of measuring high g-value acceleration data in high-speed collisions, explosions, and other events. Utilizing wireless transmission, this method eliminates the need for retrieval of measurement and recording equipment, avoiding the problem of difficulty in installing signal transmission lines on high-speed moving objects. It is particularly suitable for situations where high collision velocities generate peak accelerations of tens of thousands of g, and wired data transmission is difficult, thus possessing practical engineering value.

The invention discloses an underground water flow direction, speed and mass flow monitoring method. Underground water flow direction logging or hydrological logging is a technical means for obtaining underground water flow information through a drill hole or a monitoring well. An array sensor is located in a well logging; the array sensor comprises a cylindrical shell, a heating body, a temperature sensor and an orientation sensor; the size of the cylindrical shell is the same as that of the inner wall of the logging well; the heating body is arranged at the central position of the cylindrical shell; the bottom surface of the cylindrical shell is uniformly divided into N fan-shaped sub-areas along the circumference by taking the heating body as the center, and each sub-area is provided with a temperature sensor; an orientation sensor is arranged on each temperature sensor and is used for monitoring the azimuth angle of the temperature sensor; data collected by the array sensor is transmitted to the controller, and the flow speed, the water flow direction and the total mass flow rate of water flow are obtained through calculation. According to the invention, the measurement difficulty of a heterogeneous aquifer and a thin aquifer is overcome, and wider and more accurate monitoring of the aquifer environment is realized.

The invention relates to a fluid dynamic pressure type nuclear main pump mechanical seal liquid film thickness measuring device which is characterized in that a displacement sensor is connected to the tail of a guide rod, the guide rod is fixed between a static ring seat and a shaft sleeve, a static ring is fixedly pressed on the static ring seat, the guide rod and the static ring are rigidly connected together, and the static ring and a moving ring are attached. When the fluid dynamic pressure type mechanical seal is in a non-operation state, the static ring and the movable ring are in an attached state, the distance between the end faces is zero, when the fluid dynamic pressure type mechanical seal starts to work, a layer of micron-sized liquid film can be formed between the static ring and the movable ring, so that the end faces of the static ring and the movable ring are opened, and when the guide rod and the static ring are in rigid connection and the liquid film is generated, the end faces of the static ring and the movable ring are closed. The static ring can move in the axial direction, when the static ring moves, the guide rod is driven to move in the axial direction, and in the state, the thickness of the liquid film can be indirectly detected by measuring the amplitude of vertical displacement of the guide rod. According to the invention, the displacement condition of the end face liquid film change can be effectively collected, and meanwhile, the influence on the mechanical seal operation of the fluid dynamic pressure type nuclear main pump is avoided.

This invention discloses a solid-liquid non-full pipe flow monitoring system and method, relating to the field of mineral processing engineering technology. The solid-liquid non-full pipe flow monitoring system includes a measurement unit, a data processing unit, and a linkage control unit. The measurement unit is used to collect the flow velocity signal, liquid level signal, and temperature signal of coal slurry water in the pipeline. The data processing unit is electrically connected to the measurement unit and is used to receive and process the flow velocity signal, liquid level signal, and temperature signal, and calculate the real-time flow rate of coal slurry water in the pipeline according to a preset program and formula. The linkage control unit is electrically connected to the data processing unit and is used to compare the real-time flow rate with a set value and output a control signal to the actuator to adjust the flow rate. This solves the problem of non-full pipe flow measurement, automatically adjusts the flow rate, stabilizes the production process, has low maintenance costs, and enables unattended operation.

The invention relates to the technical field of millimeter-wave radar and machine vision, and discloses a livestock and poultry three-dimensional imaging measurement seed selection method and system based on millimeter-wave radar, and the method comprises the steps: obtaining an electromagnetic scattering signal of livestock and poultry through the millimeter-wave radar; the laser radar is used for acquiring depth information of livestock and poultry; the camera is used for acquiring a video sequence of livestock and poultry; the signal processing module is used for recovering millimeter wave signals; the three-dimensional imaging module is used for converting the signal into a three-dimensional image; the motion compensation module is used for fusing the three-dimensional image, the depth information and the video sequence; the image processing module is used for extracting livestock and poultry body size parameters; the livestock and poultry seed selection module is used for screening seed sources based on livestock and poultry body size parameters; according to the invention, a millimeter wave radar imaging technology is adopted to solve the problem of non-contact three-dimensional shape measurement through animal fur.

The invention relates to a tool for measuring air inlet and outlet edges of a rolling blade. The guide sliding plates are symmetrically arranged on the two sides of the bottom plate, the measuring gauge seats are symmetrically arranged on the guide sliding plates, and the gauge setting seat is arranged between the two measuring gauge seats and locked and fixed to the bottom plate through screws. The blade positioning seat and the standard part positioning seat are arranged on the bottom plate between the two guide sliding plates and are locked and fixed through screws, and the standard part positioning seat is arranged between the gauge setting seat and the blade positioning seat; during measurement, the measuring meter seat is manually operated to move on the guide sliding plate, and the measuring meter seat measures the edge of the blade after the meter is aligned by the meter aligning seat. The tool designed by the invention can be used for quickly and accurately measuring the length of the air inlet and outlet edges of the blade with three-dimensional space characteristics in a positioning manner. The linear cutting machining quality of the rolling blades can be improved, the production efficiency is improved, and the production cost is reduced.

The invention belongs to the technical field of particle detection, and particularly relates to a proportional amplification gas detector which comprises a detector shell, an incidence window, an anode, a shielding grid mesh, a grid mesh voltage interface, an anode voltage and signal interface, a gas inlet and a gas outlet. The incident window is arranged on one end face of the detector shell, the incident window, the shielding grid mesh and the anode are arranged along the axis of the detector shell, the shielding grid mesh is located at a proper position between the incident window and the anode, and the grid mesh voltage interface, the anode voltage and signal interface, the air inlet and the air outlet are arranged on the detector shell. The grid voltage interface is used for providing voltage for the shielding grid, and the anode voltage and signal interface is used for providing voltage for the anode and receiving a detector signal. Signal interference of incident ions and ions generated by ionization on the anode of the detector is shielded, and the energy resolution of the detector is improved; and the signal-to-noise ratio of the detector is improved while the proportional amplification of the signal is realized.

The invention relates to the technical field of electrostatic discharge radiation electric field measurement, and discloses an electrostatic discharge radiation electric field measurement device and method based on a pulsed electric field probe. The current target is embedded in the middle of the metal plate and is used for performing contact discharge with a discharge electrode of the electrostatic discharge generator to be tested; the pulsed electric field probe is used for collecting an electric signal of a space electric field at a preset position on the same side of the metal plate as the discharge electrode, converting the collected electric signal into an optical signal, and transmitting the optical signal to the receiving module through a signal optical fiber; the receiving module is used for converting the optical signal transmitted by the signal optical fiber into an electric signal and inputting the electric signal into an oscilloscope; according to the ESD radiation electric field measurement system and method, the accuracy of measurement of the ESD radiation electric field is improved, and the measurement problem of the ESD radiation electric field is solved.

The invention discloses a device and a method for measuring the diameter of a rope sheave of a speed governor, which are used for solving the problem that the hub diameter D1 and the groove bottom diameter D2 are difficult to accurately measure due to space shielding after the rope sheave is installed. The device comprises an adjustable support, a positioning assembly and a measuring assembly. The positioning assembly is provided with an elastic telescopic positioning collision bead used for being matched with a limiting hole in the end face of a rope wheel so as to provide an accurate angular reference. The measuring assembly comprises an angular displacement sensor and a first detection wheel and a second detection wheel which can be selectively installed and have different contours, and the first detection wheel and the second detection wheel can be in rolling contact with the edge of the hub or the bottom of the rope groove. The method comprises the following steps: mounting and positioning the bracket; measuring and calculating D1 by using a first detection wheel; and the second detection wheel is replaced and D2 is measured and calculated. According to the invention, accurate conversion and intelligent measurement from mechanical rolling to digital signals in situ in a mounting state are realized, the operation is convenient and fast, and the repeatability is good.

An odd-number groove thread pitch diameter comparator relates to the technical field of thread pitch diameter comparators and structurally comprises a ruler frame, an arc-shaped plug support, a measuring head, a lever mechanism, a dial gauge and a locking screw, the plug support is mounted at the bottom of the ruler frame, the position of the plug support can be adjusted up and down, and the measuring head is mounted on the lever mechanism. The insertion bracket is fixed on the ruler frame through a locking screw; the measuring heads comprise fixed measuring heads and movable measuring heads, the two fixed measuring heads are installed on the inserting support, the included angle between the two fixed measuring heads is # imgabs0 #, and n is an odd number. The method has the beneficial effects that high-precision measurement is achieved, the measuring head included angle and the precise transmission ratio are designed, the geometric features of five-groove and seven-groove threads are matched, the measurement problem of a traditional tool is effectively solved, the measurement precision is improved, the precision improvement magnitude is determined according to actual measurement data and industrial standard comparison, odd-groove threads are greatly improved, and the measurement precision is improved. The pitch diameter measurement accuracy of five-groove and seven-groove threads provides reliable detection guarantee for high-precision processing.

The invention discloses a handheld crude oil oil-water interface measuring device, and relates to the technical field of oil-water interface measuring. The invention comprises: an outer cylinder, the inner side wall of the outer cylinder is slidably connected with the inner cylinder, the end of the inner cylinder is fixedly connected with a handle, dovetail grooves are provided on both sides of the inner cylinder, reagent strips are placed on the inner side walls of the dovetail grooves, and a sealing plate is installed at the bottom of the outer cylinder; the invention is easy to operate, small in size, light in weight, easy to be portable and operated by personnel at oil well production sites, easy to be used in oil field production site measurement environments, conducive to promotion and application in oil field production, and helpful to solve the problem of oil-water interface measurement in oil field production at low cost; through an effective mechanical structure, the probe measurement method is not adopted, and the influence of the upper solidified crude oil in a single well storage tank on the probe of the measuring instrument is reasonably solved; the chemical reaction strip adopted is a consumable, and multiple measurements can be achieved by replacing the chemical reaction strip.

This utility model relates to an L-shaped well surveying device, comprising a main rod and a crossbar vertically fixedly connected to the lower end of the main rod, forming an L-shaped structure; it also includes a telescopic extension rod and a rotating connection mechanism; the rotating connection mechanism is located at the right-angle fixed shaft connecting the main rod and the crossbar; one end of the telescopic extension rod is hinged to the right-angle fixed shaft through the rotating connection mechanism, allowing the telescopic extension rod to rotate from 0° to 90° relative to the crossbar in the vertical plane; the telescopic extension rod is composed of at least two sections of square tubing connected together, and its telescopic length is fixed by a locking mechanism; a waterproof lighting device is provided at the bottom of the crossbar; a first opening is provided on one side of the main rod for the telescopic extension rod to be inserted into it when rotated to be parallel to the main rod; a second opening is provided on the crossbar for the telescopic extension rod to be inserted into it when rotated to be in the same direction as the crossbar. It can solve the problem of difficult underground pipeline surveying in environments with small well openings and large well chambers.