Power-frequency feeble-current electromagnetic signal sensor of non-current transformer type

Abstract

The invention relates to a power-frequency feeble-current electromagnetic signal sensor of a non-current transformer type, comprising a bottom liner (11) and at least two sensors (12) mounted on the bottom liner (11). Axial geometric axes of the sensor modules (12) are mutually staggered, and either sensor (12) comprises a magnetic core (121) and a lacquered wire (122) which is wound outside the magnetic core (121) and used for inducing a magnetic field and generating electromotive force; one end of either lacquered wire (122) of either sensor (12) is connected with the input end of a multistage amplifying circuit module (2), and the other end of one lacquered wire (122) of one sensor (12) and the other end of the other lacquered wire (122) of the other sensor (12) are mutually connected together to form a sensor pair. The power-frequency feeble-current electromagnetic signal sensor of non-current transformer type adopts a non-destructive detection technology, does not destruct a wall surface, has low cost, high sensitivity, remarkable strength variance when closing to a live wire, accurate positioning, small error between an indicative position and a practical wire position in a range from -0.5cm to 0.5cm, easiness and simplicity, maneuverability without any professional knowledge, simple structure, firmness, durability, safety, reliability, no ray release, no ultrasonic wave release, and the like and does not need to mount an instrument on the wire, thereby being convenient and practical.

Description

technical field [0001] The invention is a non-current transformer type power frequency weak current electromagnetic signal sensor, in particular a non-current transformer type power frequency weak current electromagnetic signal sensor for detecting indoor wall buried wires, which belongs to the non-current transformer type power frequency weak current electromagnetic signal sensor Transformation technology of electromagnetic signal sensor. Background technique [0002] Existing professional decorators often need to have a detailed understanding of the precise direction of the wiring in the wall in order to renovate and maintain the wires in the wall; Murals to decorate the home environment. But they all faced practical difficulties in the project—since there was no ready-made wiring drawing in the wall, they could not know the precise direction and layout range of the wires. Drilling the wall blindly is very dangerous. Hitting the energized wire in the wall will damage the...

AI Technical Summary

Problems solved by technology

[0012] The shortcomings of the above instruments are bulky, high cost, difficult operation and poor safety, which directly affect the promotion and application of the above products in the market

[0013] Although scholars and researchers at home and abroad have done a lot of research work on electromagnetic theory and electromagnetic detection, the application research on the detection of buried wires in building walls and the corresponding products are still blank.

Images