Views: 7 Author: underground pipeline detector Publish Time: 2023-03-01 Origin: underground pipeline detector
Many cables, fiber optic cables and many metal pipes developed today are pre-buried construction, firstly for the aesthetics of urban construction and secondly for safety, but such construction methods have considerable impact on later line finding, maintenance and repair, and then you need an underground pipeline detector to determine the burial direction and depth of cables, fiber optic cables and metal pipes for construction and maintenance
Underground pipe detectors are used for general inspection of pipes and cables, using medium to high frequencies. These frequencies travel farther and do not sense too much signal to other pipes. Low frequency is suitable for long-distance tracking. Low frequency signals travel a long distance and do not sense other pipes. Low-frequency signals are also suitable for long-distance and well-insulated transmission pipeline.
A, underground pipeline detector need which function
As an underground pipeline detector, its function is of course to quickly and accurately detect the location, direction, depth of underground water pipes, metal pipes, cables, etc., as well as the location and size of the fracture point of the steel pipe corrosion layer. Is one of the necessary tools for water companies, gas companies, railroad communications, industrial and mining, infrastructure units to transform, repair, census of underground pipelines
Second, the underground pipeline detector instrument working principle and conditions of use
Basic working principle: the instrument is based on the principle of reflection and electromagnetic induction of electromagnetic waves in the transmission process, combined with digital filtering, wireless reception, software control and design
Electromagnetic induction: the basic working principle is: the transmitter generates electromagnetic waves and transmits the transmission signal to the detected underground metal cable through different transmission links, the underground metal cable inducts the electromagnetic waves, generates an induced current on the surface of the underground cable, and the induced current will propagate along the cable to that distance. In the process of current propagation, the underground cable will be radiated to the ground through electromagnetic waves, so that the underground cable detector receiver in the ground detection, the ground will receive the electromagnetic wave signal above the underground cable, through the received changes in the intensity of the electromagnetic wave signal, will be able to identify the location and direction of the underground cable.
The conditions for the realization of this principle: first of all, there should be a signal source that can send enough electrical energy to form a current in the line with the transmission of electrical energy, and the current in the flow of the process of generating a magnetic field in the surrounding area. Secondly, there must be a circuit that can receive this certain magnetic field and display the process of magnetic field changes in the form of electrical signals