Automotive radar device
First Claim
1. An automotive radar device having a radio-type radar housed in a vehicle-side radome installed on a vehicle, the radio-type radar including a transmitting unit and a receiving unit, the automotive radar device sending and receiving radio waves from the radar through the vehicle-side radome, in a sending and receiving direction, and measuring distance and relative velocity with respect to a subject, the automotive radar device comprising:
- a guiding unit that is arranged between the vehicle-side radome and the radar and that guides a reflected wave, without modulation thereof, from adhering matter on a surface of the vehicle-side radome to the receiving unit of the radar; and
an adhering matter judging unit that judges the existence/non-existence of the adhering matter on the surface of the vehicle-side radome on the basis of the signal level of the reflected wave received by the receiving unit,wherein the guiding unit guides a reflected wave reflected in only a specific beam direction to the receiving unit, andwherein the adhering matter judging unit judges the existence/non-existence of adhering matter on the surface of the vehicle-side radome on the basis of the signal level of the reflected wave in the specific beam direction and in another beam direction.
1 Assignment
0 Petitions
Accused Products
Abstract
An automotive radar device that can securely detect dirt adhering to the surface of a vehicle-side radome irrespective of the positional relation between the vehicle-side radome and a radar. The automotive radar device has a radio-type radar housed in a vehicle-side radome installed on a vehicle, the radio-type radar including a transmitting unit and a receiving unit. The automotive radar device sends and receives radio waves from the radar through the vehicle-side radome and measures distance and relative velocity with respect to a subject. The automotive radar device includes a guiding unit that is arranged between the vehicle-side radome and the radar and that guides a reflected wave from adhering matter on a surface of the vehicle-side radome to the receiving unit of the radar, and an adhering matter judging unit that judges the existence/non-existence of the adhering matter on the surface of the vehicle-side radome on the basis of signal level of the reflected wave received by the receiving unit.
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Citations
19 Claims
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1. An automotive radar device having a radio-type radar housed in a vehicle-side radome installed on a vehicle, the radio-type radar including a transmitting unit and a receiving unit, the automotive radar device sending and receiving radio waves from the radar through the vehicle-side radome, in a sending and receiving direction, and measuring distance and relative velocity with respect to a subject, the automotive radar device comprising:
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a guiding unit that is arranged between the vehicle-side radome and the radar and that guides a reflected wave, without modulation thereof, from adhering matter on a surface of the vehicle-side radome to the receiving unit of the radar; and an adhering matter judging unit that judges the existence/non-existence of the adhering matter on the surface of the vehicle-side radome on the basis of the signal level of the reflected wave received by the receiving unit, wherein the guiding unit guides a reflected wave reflected in only a specific beam direction to the receiving unit, and wherein the adhering matter judging unit judges the existence/non-existence of adhering matter on the surface of the vehicle-side radome on the basis of the signal level of the reflected wave in the specific beam direction and in another beam direction. - View Dependent Claims (2, 3)
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4. An automotive radar device having a radio-type radar housed in a vehicle-side radome installed on a vehicle, the radio-type radar including a transmitting unit and a receiving unit, the automotive radar device sending and receiving radio waves from the radar through the vehicle-side radome, in a sending and receiving direction, and measuring distance and relative velocity with respect to a subject, the automotive radar device comprising:
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a guiding unit that is arranged between the vehicle-side radome and the radar and that guides a reflected wave, without modulation thereof, from adhering matter on a surface of the vehicle-side radome to the receiving unit of the radar; and an adhering matter judging unit that judges the existence/non-existence of the adhering matter on the surface of the vehicle-side radome on the basis of the signal level of the reflected wave received by the receiving unit, wherein the guiding unit reflects the reflected wave from the adhering matter on the surface of the vehicle-side radome in a direction toward the receiving unit. - View Dependent Claims (6, 7, 8, 9)
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5. An automotive radar device having a radio-type radar housed in a vehicle-side radome installed on a vehicle, the radio-type radar including a transmitting unit and a receiving unit, the automotive radar device sending and receiving radio waves from the radar through the vehicle-side radome, in a sending and receiving direction, and measuring distance and relative velocity with respect to a subject, the automotive radar device comprising:
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a guiding unit that is arranged between the vehicle-side radome and the radar and that guides a reflected wave, without modulation thereof, from adhering matter on a surface of the vehicle-side radome to the receiving unit of the radar; and an adhering matter judging unit that judges the existence/non-existence of the adhering matter on the surface of the vehicle-side radome on the basis of the signal level of the reflected wave received by the receiving unit, wherein the guiding unit reflects the reflected wave from the adhering matter on the surface of the vehicle-side radome to a direction where the receiving unit exists so that the reflected wave becomes parallel to a directivity direction of a receiving antenna.
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10. An automotive radar device having a radio-type radar housed in a vehicle-side radome installed on a vehicle, the radio-type radar including a transmitting unit and a receiving unit, the automotive radar device sending and receiving radio waves from the radar through the vehicle-side radome, in a sending and receiving direction, and measuring distance and relative velocity with respect to a subject, the automotive radar device comprising:
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a guiding unit that is arranged between the vehicle-side radome and the radar and that guides a reflected wave, without modulation thereof, from adhering matter on a surface of the vehicle-side radome to the receiving unit of the radar; and an adhering matter judging unit that judges the existence/non-existence of the adhering matter on the surface of the vehicle-side radome on the basis of the signal level of the reflected wave received by the receiving unit, wherein the guiding unit refracts the reflected wave from the adhering matter on the surface of the vehicle-side radome into a direction where the receiving unit exists. - View Dependent Claims (12)
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11. An automotive radar device having a radio-type radar housed in a vehicle-side radome installed on a vehicle, the radio-type radar including a transmitting unit and a receiving unit, the automotive radar device sending and receiving radio waves from the radar through the vehicle-side radome, in a sending and receiving direction, and measuring distance and relative velocity with respect to a subject, the automotive radar device comprising:
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a guiding unit that is arranged between the vehicle-side radome and the radar and that guides a reflected wave, without modulation thereof, from adhering matter on a surface of the vehicle-side radome to the receiving unit of the radar; and an adhering matter judging unit that judges the existence/non-existence of the adhering matter on the surface of the vehicle-side radome on the basis of the signal level of the reflected wave received by the receiving unit, wherein the guiding unit refracts the reflected wave from the adhering matter on the surface of the vehicle-side radome into a direction where the receiving unit exists so that the reflected wave becomes parallel to a directivity direction of a receiving antenna.
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13. An automotive radar device having a radio-type radar housed in a vehicle-side radome installed on a vehicle, the radio-type radar including a transmitting unit and a receiving unit, the automotive radar device sending and receiving radio waves from the radar through the vehicle-side radome, in a sending and receiving direction, and measuring distance and relative velocity with respect to a subject, the automotive radar device comprising:
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a guiding unit that is arranged between the vehicle-side radome and the radar and that guides a reflected wave, without modulation thereof, from adhering matter on a surface of the vehicle-side radome to the receiving unit of the radar; and an adhering matter judging unit that judges the existence/non-existence of the adhering matter on the surface of the vehicle-side radome on the basis of the signal level of the reflected wave received by the receiving unit, wherein the guiding unit reflects the reflected wave from the adhering matter on the surface of the vehicle-side radome to its incoming direction. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An automotive radar device having a radio-type radar housed in a vehicle-side radome installed on a vehicle, the radio-type radar including a transmitting unit and a receiving unit, the automotive radar device sending and receiving radio waves from the radar through the vehicle-side radome, in a sending and receiving direction, and measuring distance and relative velocity with respect to a subject, the automotive radar device comprising:
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a guiding unit that is arranged between the vehicle-side radome and the radar and that guides a reflected wave, without modulation thereof, from adhering matter on a surface of the vehicle-side radome to the receiving unit of the radar; and an adhering matter judging unit that judges the existence/non-existence of the adhering matter on the surface of the vehicle-side radome on the basis of the signal level of the reflected wave received by the receiving unit, wherein the reflected wave is reflected from said surface along a path which is different from the path of incidence of the wave on said surface.
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Specification