A fan detection chip, a fan detection method and a fan detection system are disclosed. In the fan detection system, a fan includes a power terminal and a speed signal terminal, and optionally includes a PWM signal terminal; a power supply module provides a driving voltage to the fan, a PWM signal generating module provides a first PWM signal and a second PWM signal which respectively have different duty cycles, a current sensing module respectively senses a first current and a second current flowing from the power supply module, and a control module compares the first current and the second current. The control module determines the fan to be a PWM fan when the first current is different from the second current, and the control module determines the fan to be a DC fan when the first current is the same as the second current.

A method of analyzing a structural condition of a machine is described. The method includes determining a position of a portion of a machine, a rotating shaft, a fluid transfer system, or a reciprocating machine in operation; collecting an image of the portion with an image collector, synchronizing the determined position of the portion with the collected image of the portion; amplifying the synchronized image; and storing the amplified image to a memory. Related apparatuses, systems, storage media, techniques and articles are also described.

A method of analyzing a structural condition of a machine is described. The method includes determining a position of a portion of a machine, a rotating shaft, a fluid transfer system, or a reciprocating machine in operation; collecting an image of the portion with an image collector, synchronizing the determined position of the portion with the collected image of the portion; amplifying the synchronized image; and storing the amplified image to a memory. Related apparatuses, systems, storage media, techniques and articles are also described.

An apparatus comprises one or more substrates and one or more coils. At least one of the coils is configured to produce a first magnetic field that induces eddy currents in a conductive target, which generates a reflected magnetic field. One or more magnetic field sensing elements supported by the one or more substrates detect the reflected magnetic field. A conductive support structure supports the one or more substrates. The support structure includes a gap in an area adjacent to the one or more coils so that the support structure does not generate a reflected magnetic field in response to the first magnetic field.

A method for manufacturing a sensor module having a passive electrical component comprises punching a plurality of holes in a first green sheet of a plurality of green sheets, and forming a plurality of channels and a plurality of passageways in a second green sheet of the plurality of green sheets by using a laser on the second green sheet. A metallization paste is printed in the plurality of holes, the plurality of channels, and the plurality of passageways, and the first green sheet and the second green sheet are dried with the metallization paste. The method further comprises aligning, stacking, laminating, and sintering the plurality of green sheets together to create a sintered tile, and separating a plurality of coils of the sintered tile in order to obtain the sensor module.

A method for manufacturing a sensor module having a passive electrical component comprises punching a plurality of holes in a first green sheet of a plurality of green sheets, and forming a plurality of channels and a plurality of passageways in a second green sheet of the plurality of green sheets by using a laser on the second green sheet. A metallization paste is printed in the plurality of holes, the plurality of channels, and the plurality of passageways, and the first green sheet and the second green sheet are dried with the metallization paste. The method further comprises aligning, stacking, laminating, and sintering the plurality of green sheets together to create a sintered tile, and separating a plurality of coils of the sintered tile in order to obtain the sensor module.

Disclosed is a transducer for an inductive displacement sensor, including a secondary winding of 2N turns of alternating directions extending in a zone of length D.sub.tot, the winding including: a first coiled conductive section forming N half-turns, extending between a first end of the winding, situated at the midpoint of the length D.sub.tot, and a first point of the winding, situated at one end of the length D.sub.tot; a second section forming N half-turns, extending between the first point and a second intermediate point situated at the midpoint of the length D.sub.tot; a third section forming N half-turns, extending between the second point and a third intermediate point situated at a second end of the length D.sub.tot; and a fourth section forming N half-turns, extending between the third point and a second end of the winding situated at the midpoint of the length D.sub.tot.

Disclosed is a transducer for an inductive displacement sensor, including a secondary winding of 2N turns of alternating directions extending in a zone of length D.sub.tot, the winding including: a first coiled conductive section forming N half-turns, extending between a first end of the winding, situated at the midpoint of the length D.sub.tot, and a first point of the winding, situated at one end of the length D.sub.tot; a second section forming N half-turns, extending between the first point and a second intermediate point situated at the midpoint of the length D.sub.tot; a third section forming N half-turns, extending between the second point and a third intermediate point situated at a second end of the length D.sub.tot; and a fourth section forming N half-turns, extending between the third point and a second end of the winding situated at the midpoint of the length D.sub.tot.

Disclosed is a target for an inductive displacement sensor, including a plurality of conductive patterns distributed along a zone having a dimension D.sub.tot in a direction, the patterns being defined by the overlay of at least a first set of elementary periodic patterns having a period approximately equal to D.sub.tot/N, including N first elementary conductive patterns of a dimension approximately equal to D.sub.tot/2N in the direction, regularly distributed along the zone, and of a second set of elementary periodic patterns having a period approximately equal to D.sub.tot/(N+r), including N+r second elementary patterns of a dimension approximately equal to D.sub.tot/2(N+r) in the direction, regularly distributed along the zone, where N is an integer greater than or equal to 2 and r is a positive integer, different to zero and less than or equal to N1, wherein first and second elementary conductive patterns overlap at least partially.

Disclosed is a target for an inductive displacement sensor, including a plurality of conductive patterns distributed along a zone having a dimension D.sub.tot in a direction, the patterns being defined by the overlay of at least a first set of elementary periodic patterns having a period approximately equal to D.sub.tot/N, including N first elementary conductive patterns of a dimension approximately equal to D.sub.tot/2N in the direction, regularly distributed along the zone, and of a second set of elementary periodic patterns having a period approximately equal to D.sub.tot/(N+r), including N+r second elementary patterns of a dimension approximately equal to D.sub.tot/2(N+r) in the direction, regularly distributed along the zone, where N is an integer greater than or equal to 2 and r is a positive integer, different to zero and less than or equal to N1, wherein first and second elementary conductive patterns overlap at least partially.