7results 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.

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 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.

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.