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11. 发明专利

JP2882491B2 失效
公开(公告)号：JP2882491B2
公开(公告)日：1999-04-12
申请号：JP31660190
申请日：1990-11-20
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： TANAKA KATSUYUKI , KATO MASANORI , OOHARA YASUSHI , KOHAMA TOKIO , NISHIO YOSHITAKA
IPC分类号： F02M35/12 , F01N1/00 , F01N1/06

12. 发明专利

JPH07257222A DRIVING CONDITION ALARMING DEVICE 失效
公开(公告)号：JPH07257222A
公开(公告)日：1995-10-09
申请号：JP5040094
申请日：1994-03-22
申请人： NIPPON SOKEN
发明人： WAKAYAMA SATOSHI , KATO MASANORI
IPC分类号： B60K28/06
摘要： PURPOSE:To make a driver recognize disturbance of his psychological condition so as to prevent an accident. CONSTITUTION:An unsafe driving detection sensor 10 for forming a pattern of frequency of acceleration, deceleration, and turn as a driving pattern inherent to a driver which detects frequency of acceleration, deceleration, and turn when the driver drives a vehicle is provided in a driving condition alarming device which alarms unsafe condition to the driver. An unsafe driving judging circuit 20 which stores a driving pattern inherent to the driver when the driver drives the vehicle in the condition in which driver's psychological condition is not disturbed in advance compares the stored driving pattern inherent to the driver with the driving pattern inherent to the driver at the time of normal driving and judges that the driver is in the unsafe condition if the results of comparison are different.

13. 发明专利

JPH09226490A DETECTOR FOR CROSSING OBJECT 失效
公开(公告)号：JPH09226490A
公开(公告)日：1997-09-02
申请号：JP3503996
申请日：1996-02-22
申请人： NIPPON SOKEN
发明人： IMANISHI KATSUYUKI , KATO MASANORI , KITAGAWA MARE
IPC分类号： G01B11/00 , B60R21/00 , G06T1/00 , G06T7/60
摘要： PROBLEM TO BE SOLVED: To efficiently detect a comparatively small crossing object with a high precision. SOLUTION: On the basis of image data from a photographing device 1, distance distribution data for a front space is provided by means of a distance computing circuit 3. Using a plurality of images photographed at the different times, a moving quantity of a crossing person between images is computed by means of a moving quantity computing device 4. By means of a vertical edge number computing circuit 5, detection windows matching with the dimension of the crossing person as to the vertical area of the photographed image are arranged in the horizontal direction without any gap, and the number of vertical edges for each detection window is computed. When the number of vertical edges based on the vertical edge number computing circuit 5 is the specified threshold value or more, the detected window is detected as a proposed window by means of a microcomputer 7. By means of the microcomputer 7, an object heading to the center of a traveling path is temporarily detected as a crossing person on the basis of the center position of the traveling path and the moving direction of the object, while a detected window, in which the crossing person exists actually, is specified on the basis of the time coordinate process.

14. 发明专利

JPH05209563A INTAKE SOUND CONTROL DEVICE 失效
公开(公告)号：JPH05209563A
公开(公告)日：1993-08-20
申请号：JP15502492
申请日：1992-06-15
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： TANAKA KATSUYUKI , OHARA YASUSHI , KATO MASANORI , KOHAMA TOKIO , NISHIO YOSHITAKA
IPC分类号： F01N1/06 , F02M35/12 , G10K11/16 , G10K11/178
摘要： PURPOSE:To provide an intake sound control device capable of controlling the intake sound of an engine across the whole rotation area. CONSTITUTION:An engine rotation sensor 1 gathers the information of intake sound generated in association with the driving of an engine. A controller 2 generates a signal having frequency corresponding to the desired degree ratio component from the gathered intake sound information, and also performs the phase and amplitude control of this signal. The controller 2 then generates control sound from a speaker 3 disposed at an engine intake noise propagation path.

15. 发明专利

JPH07168583A MULTI-POINT TYPE NOISE CONTROL DEVICE 失效
公开(公告)号：JPH07168583A
公开(公告)日：1995-07-04
申请号：JP31536693
申请日：1993-12-15
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： OHARA YASUSHI , NAKASE YOSHIHIRO , NISHIO YOSHITAKA , TANAKA KATSUYUKI , KOHAMA TOKIO , KATO MASANORI
IPC分类号： F01N1/00 , F02M35/12 , G10K11/178
摘要： PURPOSE:To improve a desired sound characteristic in a noise in the inside and the outside of a vehicle by adding a control sound to a noise of the order component of engine speed based on a map of a phase and amplitude corresponding to each order. CONSTITUTION:This device is provided with plural actuators 4, 5 arranged for controlling a noise from plural sound sources or a pseudo sound source, a controller 3 which forms the order component of a noise from the engine rotation pulse, and controls a phase and amplitude for each plural actuator based on an engine rotation pulse and an engine load signal in accordance with map information in which phase control quantity and amplitude control quantity for the order component of a noise are previously stored making the engine rotation pulse and the engine load signal as parameters, plural microphones 6, 7 used for deciding map information by feedback, a FFT 8 and a personal computer 9.

16. 发明专利

JPH07152385A NOISE CONTROLLER 失效
公开(公告)号：JPH07152385A
公开(公告)日：1995-06-16
申请号：JP29694193
申请日：1993-11-26
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： OHARA YASUSHI , NAKASE YOSHIHIRO , NISHIO YOSHITAKA , TANAKA KATSUYUKI , KOHAMA TOKIO , KATO MASANORI
IPC分类号： F01N1/00 , F02M35/12 , G10K11/178
摘要： PURPOSE:To provide a noise controller capable of muffling a noise of an engine by interfering a control sound by an actuator for the noise which the engine generates and making the noise outside and inside a car a required sound characteristic by working the noise to the sound provided with a required characteristic. CONSTITUTION:The actuator 6 arranged on the sound source side of the noise in the vicinity of a route where the noise radiated by a vehicle propagates outside and inside the vehicle is provided in the noise controller, and a controller 4 connected to the actuator 6 forms a control waveform signal for radiating the control sound controlling the noise to the actuator 6, and sensors 1, 2 connected to the controller 4 obtain e.g engine rotation information and engine load information required the controller 4 to generate the control waveform signal.

17. 发明专利

JPH06330763A ENGINE NOISE CONTROLLER 失效
公开(公告)号：JPH06330763A
公开(公告)日：1994-11-29
申请号：JP14272893
申请日：1993-05-21
申请人： NIPPON DENSO CO , NIPPON SOKEN
发明人： TANAKA KATSUYUKI , NISHIO YOSHITAKA , KOHAMA TOKIO , KAMEYAMA SATOSHI , OHARA YASUSHI , KATO MASANORI
IPC分类号： F02B77/13 , F01N1/06 , G10K11/178 , G10K11/16
摘要： PURPOSE:To effectively reduce engine noises or convert the wave form thereof over a wide range. CONSTITUTION:A wave form generating circuit 46 having an engine rotation sensor 5 for detecting the rotational frequency of an engine generates a periodic signal having the frequency of prescribed times the rotational frequency of the engine as a rotation pulse signal 43a. The output of an air flow meter 3 is passed through a band pass filter 41 and rectifying circuit 42 to give a control signal 42a of an average value of the AC component. A CPU 44 refers to a map previously stored in a memory 45 changes the phase and amplitude of the periodic signal for an engine rotation reference position signal 8a on the basis of a rotation pulse signal 43a and the control signal 42a to output them as drive signals 4a, 4b so that speakers 6A, 6B provided in an intake pipe and exhaust pipe are operated to reduce noises.

18. 发明专利

JPH03222854A INTAKE SOUND CONTROLLER 失效
公开(公告)号：JPH03222854A
公开(公告)日：1991-10-01
申请号：JP31660190
申请日：1990-11-20
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： TANAKA KATSUYUKI , KATO MASANORI , OHARA YASUSHI , KOHAMA TOKIO , NISHIO YOSHITAKA
IPC分类号： F02M35/12 , F01N1/00 , F01N1/06
摘要： PURPOSE:To reduce an intake noise level as well as to emit a smooth intake sound by operating desired frequency from engine speed detected by an engine speed detecting means, and outputting a sound of the same phase or opposite one from a soundwave outputting means on the basis of the operating signal. CONSTITUTION:A space part 22 in a resonator 2 being connected to an intake pipe 13 of an internal combustion engine 1 via a small diameter part 21 is partitioned off by a wall surface 24 into a first space part 23 which is interconnected to the intake pipe 13. Then, a cancel speaker 3 or a sound generating means is housed in the first space part 23. As for this speaker 3, it uses a ceramic speaker capable of drawing out large force despite a small type, and a diaphragm 32 is vibrated by a piezoelectric actuator 31 and a cancel sound is made so as to be emitted. Then, desired frequency is operated at a control circuit 5 where an output signal of an intake pressure sensor 4 arresting an intake sound and engine speed information are inputted, thus a sound of the same phase or opposite one is emitted from the speaker 3.

19. 发明专利

JPS6248911A POSITIVE TYPE SILENCER 失效
公开(公告)号：JPS6248911A
公开(公告)日：1987-03-03
申请号：JP19011585
申请日：1985-08-28
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： KATO MASAHIKO , KATO MASANORI , KUWAKADO SATOSHI , TANAKA KATSUYUKI , ITO KOJI
IPC分类号： F01N1/00 , F01N1/06 , G10K11/16 , G10K11/178
摘要： PURPOSE:To effectively reduce noise in a pipe passage by disposing a sound wave generating means on a pipe-passage-side wall and a sound collecting means at the opening of the pipe passage and advancing or inverting the phase of output signal from the sound collecting means to drive the sound wave generating means. CONSTITUTION:A speaker 2 is disposed on the pipe wall of an intake pipe 1 which is connected to an engine, that is, a noise source and a microphone 3 is disposed close to the open end 12 of said pipe 1. An output signal from the microphone 3 is input to a phase feedback circuit consisting of a phase comparator 42, a low pass filter 43, a voltage controlling oscillator 44, a band pass filter 45 and a delay element 46 via an amplifier 41. A phase advancing signal 45a from said circuit is fed to a phase invertor 50 via amplifiers 47 and 49 to invert phase and the speaker 2 is thus driven. Noise which passes through the inside of the intake pipe 1 may then be cancelled and silenced.

20. 发明专利

JPS6220713A NOISE REDUCING DEVICE OF AIR CONDITIONING DEVICE 失效
公开(公告)号：JPS6220713A
公开(公告)日：1987-01-29
申请号：JP16031885
申请日：1985-07-22
申请人： NIPPON DENSO CO , NIPPON SOKEN
发明人： ITO KOJI , TAKAGI MASASHI , KUWAKADO SATOSHI , KATO MASANORI
IPC分类号： B60H1/00 , G10K11/16 , G10K11/178
摘要： PURPOSE:To enable reduction of the generation of noise, by a method wherein noise is detected to fetch it as an electric signal, which produces a signal in a reverse phase, and further, through regulation of a level depending upon an air conditioning mode, sound wave in a reverse phase and having the same level as that of noise is radiated from a sound generating means. CONSTITUTION:An output from a microphone 1 for detection of noise is inputted as a signal of a given frequency range to an inverter 5 after a very low frequency range is cut through a pre-amplifier 3 and a filter circuit 4. Phase inversion is made on the signal by the inverter 5 to output it to a power amplifier 6. Meanwhile, signals 10-12 from an air conditioning mode detecting circuit 9 are inputted to a power amplifier 6 through a power amplifier control circuit 7, and the degree of amplification of the power of the power amplifier 6 is decided by an air conditioning mode 9. A signal 5 in a reverse phase is regulated by the air conditioning mode to radiate it through a speaker 8. This causes erasing of noise, resulting in reduction of the generation of noise.

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