Set-up for measuring a rotational speed, in particular, of a turbocharger of a motor vehicle
First Claim
1. A set-up for measuring a rotational speed of a turbocharger of a motor vehicle, comprising:
- at least one antenna for at least one of generating and receiving electromagnetic radiation;
an electronic module that includes at least one of an electric and electronic component, the electronic module being electrically connected to the antenna;
a housing shell that is made at least partially of laser-absorbing material and that includes an inner chamber in which the at least one antenna and the electronic module are situated; and
a housing cover having a first side that;
at least partially covers the inner chamber of the housing shell; and
abuts against a laser-absorbing contact surface of the housing shell at a location at which the housing cover is made of material that is transparent to laser radiation and at which the housing cover is welded to the laser-absorbing contact surface with a laser-welded seam;
wherein at least one of the following;
at least a portion of the housing cover has a first thickness that is one quarter of a wavelength of an electromagnetic wave at least one of (a) that the antenna is configured to at least one of transmit and receive through the housing cover, (b) to which the at least the portion of the housing cover is transparent, and (c) that is between twenty-one gigahertz and twenty-seven gigahertz; and
the housing cover includes a plate with at least one window-like depression at which the plate is reduced in thickness, and the window-like depression and the antenna are positioned relative to each other such that at least one of (a) at least a portion of a transmitting or receiving surface of the antenna faces the depression and (b) a projection of the antenna, in a direction that is perpendicular to a transmitting or receiving surface of the antenna, onto the first side of the housing cover lies at least partially in the depression.
1 Assignment
0 Petitions
Accused Products
Abstract
For a set-up for measuring a rotational speed of a turbocharger of a motor vehicle, including at least one antenna for generating and/or receiving electromagnetic radiation and an electronic module having at least one electric and/or electronic component and being electrically connected to the antenna. The set-up further includes a housing shell made at least partially of laser-absorbing material and having an inner chamber, and a housing cover, which rests on at least one laser-absorbing contact surface of the housing shell and covers the inner chamber of the housing shell at least partially, and at least sections of which are made of material transparent to laser radiation; the antenna and the electronic module being situated in the inner chamber of the housing shell, and at least sections of the housing cover being welded to the housing shell at the at least one contact surface using a laser-welded seam.
8 Citations
23 Claims
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1. A set-up for measuring a rotational speed of a turbocharger of a motor vehicle, comprising:
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at least one antenna for at least one of generating and receiving electromagnetic radiation; an electronic module that includes at least one of an electric and electronic component, the electronic module being electrically connected to the antenna; a housing shell that is made at least partially of laser-absorbing material and that includes an inner chamber in which the at least one antenna and the electronic module are situated; and a housing cover having a first side that; at least partially covers the inner chamber of the housing shell; and abuts against a laser-absorbing contact surface of the housing shell at a location at which the housing cover is made of material that is transparent to laser radiation and at which the housing cover is welded to the laser-absorbing contact surface with a laser-welded seam; wherein at least one of the following; at least a portion of the housing cover has a first thickness that is one quarter of a wavelength of an electromagnetic wave at least one of (a) that the antenna is configured to at least one of transmit and receive through the housing cover, (b) to which the at least the portion of the housing cover is transparent, and (c) that is between twenty-one gigahertz and twenty-seven gigahertz; and the housing cover includes a plate with at least one window-like depression at which the plate is reduced in thickness, and the window-like depression and the antenna are positioned relative to each other such that at least one of (a) at least a portion of a transmitting or receiving surface of the antenna faces the depression and (b) a projection of the antenna, in a direction that is perpendicular to a transmitting or receiving surface of the antenna, onto the first side of the housing cover lies at least partially in the depression. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 21, 22, 23)
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17. A method for manufacturing a set-up for measuring a rotational speed of a turbocharger of a motor vehicle, the method comprising:
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providing a housing shell; positioning in an inner chamber of the housing shell an antenna for at least one of generating and receiving electromagnetic radiation and an electronic module that includes at least one electronic component electrically connected to the antenna; placing a housing cover relative to the housing shell so that a first side of the housing cover, facing towards the housing shell, at least partially covers the inner chamber and abuts against a laser-absorbing contact surface of the housing shell at a location at which the housing cover is made of material that is transparent to laser radiation; and welding the housing shell to the housing cover at the contact surface by guiding a laser beam through the housing cover; wherein at least one of the following; at least a portion of the housing cover has a first thickness that is one quarter of a wavelength of an electromagnetic wave at least one of (a) that the antenna is configured to at least one of transmit and receive through the housing cover, (b) to which the at least the portion of the housing cover is transparent, and (c) that is between twenty-one gigahertz and twenty-seven gigahertz; and the housing cover includes a plate with at least one window-like depression at which the plate is reduced in thickness, and, subsequent to the welding, the window-like depression and the antenna are positioned relative to each other such that at least one of (a) at least a portion of a transmitting or receiving surface of the antenna faces the depression and (b) a projection of the antenna, in a direction that is perpendicular to a transmitting or receiving surface of the antenna, onto the first side of the housing cover lies at least partially in the depression. - View Dependent Claims (18, 19, 20)
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Specification