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公开(公告)号：US20220057507A1
公开(公告)日：2022-02-24
申请号：US17519326
申请日：2021-11-04
申请人： DENSO CORPORATION
发明人： Masayoshi SATAKE , Youhei SUZUKI , Kensuke KOBAYASHI , Dai KONDO , Syoya ISHIDA , Yudai YAMAMOTO , Kenji FUKABORI
IPC分类号： G01S15/931 , G01S7/521
摘要： An ultrasonic sensor is provided with an ultrasonic element that converts between an electrical signal and an ultrasonic vibration and an element accommodating case having a bottomed cylindrical shape and accommodating the ultrasonic element inside thereof. The element accommodating case includes a side plate portion formed in a cylindrical shape that surrounds a directional center axis, and a bottom plate portion that closes one end side of the side plate portion in an axial direction which is parallel to the directional center axis. The ultrasonic element is attached to the bottom plate portion. The bottom plate portion includes at least one protrusion. The protrusions vibrate together with the bottom plate portion when the bottom plate portion vibrates as an ultrasonic vibration.
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公开(公告)号：US20240038208A1
公开(公告)日：2024-02-01
申请号：US18485230
申请日：2023-10-11
申请人： DENSO CORPORATION
IPC分类号： G10K9/13 , G01S15/931 , G10K11/00 , G01S7/52
CPC分类号： G10K9/13 , G01S15/931 , G10K11/002 , G01S7/52004 , G01S2015/938 , G01S2007/52007
摘要： An ultrasonic sensor includes a magnetic substance, a diaphragm, and an electromagnetic transducer. The electromagnetic transducer is disposed opposing the magnetic substance across an outer plate of a vehicle. The diaphragm has the shape of a thin film with a film thickness direction along an axial direction parallel to a directional axis. The diaphragm is able to ultrasonically oscillate by being joined to an outer surface of the outer plate at an outer edge in a radial direction crossing the directional axis. With the outer edge of the diaphragm joined to the outer surface of the outer plate, an internal space that expands and contracts along the axial direction in response to ultrasonic oscillation of the diaphragm is formed between the diaphragm and the outer surface of the outer plate.
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公开(公告)号：US20180204710A1
公开(公告)日：2018-07-19
申请号：US15744491
申请日：2016-08-11
申请人： DENSO CORPORATION , SOKEN, INC.
发明人： Noboru MAEDA , Koji ITO , Kiyokazu AKIYAMA , Masayoshi SATAKE
摘要： A jet flow generation device includes: a discharge electrode; a reference electrode that is disposed away from the discharge electrode; a power supply circuit that generates an output voltage to control a potential difference between the discharge electrode and the reference electrode; a controller that switches the output voltage of the power supply circuit between a first voltage that does not induce corona discharge between the discharge electrode and the reference electrode and a second voltage that induces corona discharge between the discharge electrode and the reference electrode; and a case housing at least the reference electrode has an injection port that injects an ion wind of ions generated by the corona discharge.
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公开(公告)号：US20230013319A1
公开(公告)日：2023-01-19
申请号：US17936515
申请日：2022-09-29
申请人： DENSO CORPORATION
IPC分类号： G01S15/931
摘要： An object detection device that detects a corner of an object includes: a transmitter that transmits a search wave; receivers that receive a reflected wave reflected off the corner. The device determines a first path length of the search wave from the transmitter to a first receiver, and uses the positions of the transmitter and the first receiver as focal points to find a first ellipse whose distances from the transmitter and the first receiver add up to the first path length. The device determines a second path length of the search wave from the transmitter to a second receiver, and uses the positions of the transmitter and the second receiver as focal points to find a second ellipse whose distances from the transmitter and the second receiver add up to the second path length. The device finds an intersection point between the first and second ellipses as the corner.
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公开(公告)号：US20220191623A1
公开(公告)日：2022-06-16
申请号：US17653093
申请日：2022-03-01
申请人： DENSO CORPORATION
发明人： Kensuke KOBAYASHI , Masayoshi SATAKE , Dai KONDOU
IPC分类号： H04R17/02 , G01S7/521 , H01L41/113 , G01L1/16
摘要： An ultrasonic sensor includes an adhesion sensor detecting adhesion of a foreign substance to a first surface of a bottom of a microphone housing. The adhesion sensor includes: a plurality of variable capacitances defined between a plurality of sensor electrodes disposed on the first surface of the bottom, each of the variable capacitances having a capacitance value which changes in response to adhesion of a foreign substance to the first surface; and an adhesion detection unit configured to measure an individual capacitance value which is a capacitance value of each of the variable capacitances and a total capacitance value which is a total of capacitance values of all the variable capacitances to determine, based on the individual capacitance value and the total capacitance value, whether a foreign substance adheres to the first surface, and, when it is determined that a foreign substance adheres, specify a type of the foreign sub stance.
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公开(公告)号：US20220155429A1
公开(公告)日：2022-05-19
申请号：US17650206
申请日：2022-02-07
申请人： DENSO CORPORATION
发明人： Kensuke KOBAYASHI , Masayoshi SATAKE , Dai KONDO
IPC分类号： G01S7/52 , G01S7/521 , H04R17/02 , G01S15/931
摘要： An ultrasonic sensor includes an adhesion sensor including a variable capacitance and a fixed capacitance. The variable capacitance includes a sensor electrode provided on a first surface of a bottom having a microphone installed thereon and a capacitance value thereof changes in accordance with adhesion of foreign matter on the first surface. The fixed capacitance includes a first electrode connected to the sensor electrode, and a second electrode provided on a member different from a microphone housing and disposed facing the first electrode. The adhesion sensor further includes an adhesion detecting section that is connected to the sensor electrode via the fixed capacitance and detects adhesion of foreign matter to the first surface by supplying an alternating-current signal to the fixed capacitance and the variable capacitance.
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公开(公告)号：US20230393273A1
公开(公告)日：2023-12-07
申请号：US18453959
申请日：2023-08-22
申请人： DENSO CORPORATION
发明人： Masayoshi SATAKE , Yu KOYAMA , Haruka AOSHIMA , Tetsuya AOYAMA
IPC分类号： G01S15/931
CPC分类号： G01S15/931 , G01S2015/938
摘要： An ultrasonic sensor installable to a vehicle includes a shield section, a vibration conversion section, and an electric circuit section. The shield section includes a conductive layer. The conductive layer is bonded to an outer plate, which is a body part formed of non-conductive material, on an inner surface side of the outer plate. A vibration conversion section, which has a function of converting ultrasonic vibration and electrical signals, is bonded to the shield section to enable ultrasonic vibration together with the outer plate. An electric circuit section is electrically connected to the vibration conversion section to enable the transfer of the electric signals to and from the vibration conversion section. The shield section is electrically short-circuited to a ground side line electrically connected to the electric circuit section to shield the vibration conversion section.
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公开(公告)号：US20230366999A1
公开(公告)日：2023-11-16
申请号：US18357368
申请日：2023-07-24
申请人： DENSO CORPORATION
IPC分类号： G01S7/521 , G01S15/931
CPC分类号： G01S7/521 , G01S15/931 , G01S2015/938
摘要： An ultrasonic sensor installable to a vehicle includes a magnetic body capable of ultrasonic vibration and an electric-magnetic converter having a conversion function between an oscillating magnetic field corresponding to the ultrasonic vibration of the magnetic body and an electric signal. The magnetic body is located on an outer surface side of an outer plate of the vehicle, which is the surface facing an external space of the vehicle. The electric-magnetic converter is located to face the magnetic body with the outer plate interposed therebetween on an inner surface side, which is a back surface of the outer surface of the outer plate.
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公开(公告)号：US20230009960A1
公开(公告)日：2023-01-12
申请号：US17932955
申请日：2022-09-16
申请人： DENSO CORPORATION
发明人： Masayoshi SATAKE , Dai KONDOU , Haruka AOSHIMA , Kenji FUKABORI , Kohei KOZUKI
IPC分类号： G01S7/521 , G01S15/931 , G01S15/32
摘要： An ultrasonic transducer includes a transducer case and an ultrasonic element. The transducer case is formed into a bottomed, cylindrical shape having a side plate portion and a bottom plate portion that seals one end side of the side plate portion in an axial direction to configure a diaphragm. The ultrasonic element is fixedly supported to the bottom plate portion to face an interior space surrounded by the side plate portion and the bottom plate portion. The ultrasonic element is arranged in a position being offset in an in-plane direction orthogonal to the axial direction relative to a center position of the diaphragm in the in-plane direction to be capable of generating a first transmission wave having first directivity characteristics and a second transmission wave having second directivity characteristics that are directivity characteristics differing from the first directivity characteristics and in which sound pressure in the axial direction is decreased.
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