2results about How to "No error accumulation" patented technology

The present application relates to a kind of welding methods of large-scale spliced pipe fittings, belong to welding technical field, it includes the following steps: step one: from the adaptive coaxial inner clamping between connecting device and pipe inner wall;Step two: from the welding mechanism of connecting device and installation component cooperation drive is close to the place to be welded;Step three: welding mechanism drives electrode free end and the start point of place to be welded alignment;Step four: welding unit carries out welding using electrode;Step five: welding mechanism moves to avoid the moving track of replacement mechanism;Step six: replacement mechanism pulls electrode and moves towards welding mechanism;Step seven: welding mechanism moves to make clamping area a and clamping area b be located on the same straight line, replacement mechanism drives electrode tail end to be located in clamping area a, clamping area a closes and clamps electrode, clamping area b opens and cancels the clamping of electrode, then, welding mechanism moves to avoid the moving track of replacement mechanism, replacement mechanism resets.

This disclosure provides a magnetic field positioning system. The magnetic field positioning system includes at least two magnetoelectric transmitting nodes, at least one magnetoelectric receiving node, and a position determination module. Each magnetoelectric transmitting node includes a signal generator, a voltage amplification circuit, and a first magnetoelectric device connected in sequence. Each magnetoelectric receiving node includes a second magnetoelectric device, a charge amplification circuit, and an amplitude detection circuit connected in sequence. The position determination module is used to determine the distance from each magnetoelectric transmitting node to the magnetoelectric receiving node, and to determine the position of the magnetoelectric receiving node based on the position of each magnetoelectric transmitting node and the distance from each magnetoelectric transmitting node to the magnetoelectric receiving node. This disclosure can effectively increase the maximum measurable distance of magnetic field positioning, effectively solve the problem of needing to deploy a large number of transmitting nodes in a limited space, and reduce positioning errors. It can be used on a large scale in various complex electromagnetic environment industrial scenarios.