2results about How to "Solve measurement problems" patented technology

This invention discloses a convenient-to-operate coaxiality testing device for a drive mechanism, comprising: an annular connecting mechanism for stable and fixed assembly with the output shaft end face of the drive mechanism; an intermediate connecting member connected to the annular connecting mechanism for multi-angle adjustment of the annular connecting mechanism; a dial connecting block connecting the intermediate connecting member and a dial indicator; and a dial indicator whose pin is in contact with the output shaft of the drive mechanism. This invention features a simple structure, practical function, and can quickly and accurately measure the coaxiality of a drive mechanism. It boasts high assembly and adjustment efficiency, high flexibility, strong applicability, and low cost, and can be extended to other similar products.

This invention provides a non-contact residual current detection method and related equipment, comprising: deploying a magnetic sensor array on a target wall to acquire measured values ​​of magnetic induction intensity components and inputting them into a particle swarm optimization algorithm; establishing a mathematical model between the magnetic induction intensity components and live wire current, neutral wire current, concealed installation depth, and horizontal offset, and constructing a dataset based on the upper and lower limits of conductor positions and currents in actual working conditions, all of which are input into the particle swarm optimization algorithm; calculating the calculated value of the magnetic induction intensity component at each particle position based on the mathematical model, and the sum of squares of the differences between each calculated value of the magnetic induction intensity component and the measured value of the magnetic induction intensity component; using a constructed penalty function to superimpose the out-of-bounds amount as a penalty term onto the sum of squares of the differences, obtaining the optimal position of the particle swarm after iteration termination as the optimal solution; obtaining the residual current detection result based on the optimal solution; this invention achieves non-contact detection of residual current in concealed wiring without damaging the wall or inserting conductors.