A method comprises forming an etch stop layer, a first titanium layer, a magnetic core, a second titanium layer, and patterning the first and second titanium layers. The etch stop layer is formed above a substrate. The first titanium layer is formed on the etch stop layer. The magnetic core is formed on the first titanium layer. The second titanium layer has a first portion encapsulating the magnetic core with the first titanium layer, and a second portion interfacing with the first titanium layer beyond the magnetic core. The patterning of the first and second titanium layers includes forming a mask over a magnetic core region and etching the first and second titanium layers exposed by the mask using a titanium etchant and a titanium oxide etchant.

The present disclosure provides a foldable portable metal detector including: a detection coil disk; a waterproof circuit protection compartment; a circuit component; a folding and fixing component; a fastening component; and an extension rod; the circuit component is inserted into the waterproof circuit protection compartment; the extension rod is fixedly connected to the waterproof circuit protection compartment; the circuit component is electrically coupled to the detection coil disk; the detection coil disk is provided with a bracket provided with a first through-hole and a second through-hole; the fastening component is provided with a bolt and a fixing column; the waterproof circuit protection compartment is provided with a connector provided with a connection hole; the bolt penetrates the connection hole and the first through-hole in sequence, the fixing column penetrates the second through-hole; and the waterproof circuit protection compartment is selectively rotated around the bolt.

A Hall probe comprising a Hall effect sensing element. The probe is capable of precisely measuring the strength of a magnetic field in high-voltage and vacuum environments.

An exemplary magnetic field measurement system includes a wearable sensor unit that includes a magnetometer and a twisted pair cable interface assembly electrically connected to the magnetometer.

A non-destructive testing device for detecting damage to a steel wire rope, including a bushing which limits a lower shell and an upper shell through a limiting groove. The lower shell is connected to the upper shell via an opening and closing structure. An air bag is wrapped around the bushing. A PCB is fixed on the upper shell or the lower shell. The PCB is connected to a guide wheel via an electrical connector. A magnetoresistive sensor array is arranged inside the air bag and is uniformly arranged in a circumferential direction of the bushing. A steel wire rope passes through the magnetoresistive sensor array. And when the steel wire rope moves, it drives the guide wheel to rotate and triggers the acquisition of a command. Guide wheel is set with a position coder which is used to calculate a relative position of movement of the steel wire rope. The PCB is connected to a single chip microcomputer via a peripheral interface. And the single chip microcomputer is used to calculate a differential signal of N adjacent magnetoresistive sensors and to determine whether the steel wire rope is damaged. The capability of this non-destructive testing device for detection of a broken wire, a narrowed diameter, and deep damage of the steel wire rope is improved.

A sensor housing has a receiving recess at one end portion of the sensor housing located at one end of the sensor housing. The one end portion of the sensor housing faces first and second magnetic circuit portions. A circuit board is received in the receiving recess and has an opening, a front-side region and a rear-side region. The front-side region is located on a side of the opening where the one end of the sensor housing is placed. The rear-side region is located on an opposite side of the opening. A main body of a magnetic sensing device overlaps the opening such that terminals projecting from one of a pair of side walls of the main body are located at the front-side region, and terminals projecting from another one of the pair of side walls is located at the rear-side region.

A sensor package comprises a non-conductive substrate, at least two electrically conductive coils located at a first side of the non-conductive substrate, an evaluation circuit located at a second side of the non-conductive substrate opposing the first side of the non-conductive substrate and conductive connections between the at least two electrically conductive coils and the evaluation circuit.

A magnetic sensor package comprising a magnetic multi-turn sensor die and a magnetic single turn sensor die, in which both sensor dies are packaged on the same lead frame. A method of manufacturing the magnetic sensor package is also provided. A magnetic sensor system comprising a rotating magnet and the magnetic sensor package, where the sensor package is arranged so that both sensor dies sit within a homogenous magnetic field, thereby ensuring that the output signal of each sensor is not corrupted by any stray fields.

A magnetic field probe (1) having a capsule (3), in which an MR-active substance (5) is encapsulated. Two coils (7, 9) are preferably arranged in the capsule (3). Advantageous production methods for magnetic field probes (1) are also described, as well as advantageous uses of the magnetic field probe (1) and methods in which magnetic field probes (1) of this kind and arrangements of magnetic field probes (1) are used.

A metal detector 20 includes a detection signal acquisition unit 31, a threshold value setting and updating unit 32, and a determination unit 33. The detection signal acquisition unit 31 acquires a detection signal that changes according to the detection strength for a rebar W1 contained in concrete W, on the surface of the concrete W. The threshold value setting and updating unit 32 sets a threshold value in order to determine the presence or absence of the rebar W1 on the basis of the maximum value and/or the minimum value included in the acquisition results for the detection signal acquired by the detection signal acquisition unit 31. The determination unit 33 determines the presence or absence of the rebar W1 by using the threshold value set in the threshold value setting and updating unit 32.