发明公开
EP0749108A1 Anti-noise generating equipment for motor vehicles
失效
Anti-RauscherzeugungsgerätfürKraftfahrzeuge
- 专利标题： Anti-noise generating equipment for motor vehicles
- 专利标题（中）： Anti-RauscherzeugungsgerätfürKraftfahrzeuge
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申请号： EP96108986.9申请日： 1996-06-05
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公开(公告)号： EP0749108A1公开(公告)日： 1996-12-18
- 发明人: Corino, Silvio , Cotignoli, Giuseppe , Mezzadri, Vittorio Antonio Domenico
- 申请人： MAGNETI MARELLI S.p.A.
- 申请人地址： Via Griziotti 4 20145 Milano IT
- 专利权人： MAGNETI MARELLI S.p.A.
- 当前专利权人： MAGNETI MARELLI S.p.A.
- 当前专利权人地址： Via Griziotti 4 20145 Milano IT
- 代理机构： Quinterno, Giuseppe
- 优先权： ITTO950499 19950615
- 主分类号： G10L3/02
- IPC分类号： G10L3/02 ; G01R33/385 ; G10L3/00
摘要：
The equipment (1) comprises
first acoustic-electric transducers (2) for providing electrical signals indicative of the noise in a space in the motor vehicle,
second electric-acoustic transducers (4), and
an electronic unit (6) which, in a first operating mode, can pilot the second transducers (4) in dependence on the signals provided by the first (2) so as to cause the generation of pressure waves (anti-noise) which can cancel out the noise waves.
The unit (6) can also selectively implement a second operating mode, alternative to the first, in which
it pilots the second transducers (4) so as to cause the generation of pressure waves of predetermined characteristics in said space (3),
it detects the signals correspondingly provided by the first transducers (2),
it compares predetermined characteristics of these signals with those of reference signals or data previously stored, and
it generates alarm and/or locking signals when the characteristics of the signals provided by the first transducers (2) differ from those of the reference signals or data so that, in the second operating mode, the equipment (1) operates as an alarm system against intrusions into said space (3).
first acoustic-electric transducers (2) for providing electrical signals indicative of the noise in a space in the motor vehicle,
second electric-acoustic transducers (4), and
an electronic unit (6) which, in a first operating mode, can pilot the second transducers (4) in dependence on the signals provided by the first (2) so as to cause the generation of pressure waves (anti-noise) which can cancel out the noise waves.
The unit (6) can also selectively implement a second operating mode, alternative to the first, in which
it pilots the second transducers (4) so as to cause the generation of pressure waves of predetermined characteristics in said space (3),
it detects the signals correspondingly provided by the first transducers (2),
it compares predetermined characteristics of these signals with those of reference signals or data previously stored, and
it generates alarm and/or locking signals when the characteristics of the signals provided by the first transducers (2) differ from those of the reference signals or data so that, in the second operating mode, the equipment (1) operates as an alarm system against intrusions into said space (3).
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