Method and device for aligning radar mount direction, and radar aligned by the method or device
First Claim
1. A radar mount direction alignment device for aligning a transmit/receive direction of a radar device mounted on a member on which the radar device is mounted, the device comprising:
- a receiving section for receiving a signal transmitted from the radar device;
a transmission section for transmitting a signal to the radar device;
a transmission line for transmitting a signal, wherein a predetermined signal is transmitted toward the radar device after a received signal has been transmitted over the transmission line;
a signal transmitting device for transmitting, toward the radar device, a signal which, when the signal transmitted from the radar device is received, behaves as if having been reflected from a reflection target disposed at a position farther from the radar device than a distance between the radar device and the radar mount direction alignment device; and
a reflector which reflects a signal entered from one end of the transmission line, at the other end of the transmission line, wherein the reflected signal exits from the one end of the transmission line.
1 Assignment
0 Petitions
Accused Products
Abstract
A radar mount direction alignment device to be used for aligning the transmit/receive direction of a radar device 2D mounted on a member on which a radar device is to be mounted, such as a vehicle 1. The radar mount direction alignment device has receiving sections b9, b10 for receiving a signal emitted from the radar device 2D, and transmission sections a9, a10 for transmitting a signal to the radar device 2D. The radar mount direction alignment device has the function of emitting, toward the radar device 2D, a signal which, upon receipt of a signal output from the radar device 2D, behaves as if having been received at and reflected from a position farther from the radar device 2D than a distance between the radar device 2D and the radar mount direction alignment device.
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Citations
43 Claims
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1. A radar mount direction alignment device for aligning a transmit/receive direction of a radar device mounted on a member on which the radar device is mounted, the device comprising:
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a receiving section for receiving a signal transmitted from the radar device;
a transmission section for transmitting a signal to the radar device;
a transmission line for transmitting a signal, wherein a predetermined signal is transmitted toward the radar device after a received signal has been transmitted over the transmission line;
a signal transmitting device for transmitting, toward the radar device, a signal which, when the signal transmitted from the radar device is received, behaves as if having been reflected from a reflection target disposed at a position farther from the radar device than a distance between the radar device and the radar mount direction alignment device; and
a reflector which reflects a signal entered from one end of the transmission line, at the other end of the transmission line, wherein the reflected signal exits from the one end of the transmission line. - View Dependent Claims (2, 3, 4, 5)
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6. A radar mount direction alignment device for aligning a transmit/receive direction of a radar device mounted on a member on which the radar device is mounted, the device comprising:
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a receiving section for receiving a signal transmitted from the radar device;
a transmission section for transmitting a signal to the radar device;
a signal transmitting device for transmitting, toward the radar device, a signal which, when the signal transmitted from the radar device is received, behaves as if having been reflected from a reflection target disposed at a position farther from the radar device than a distance between the radar device and the radar mount direction alignment device; and
a branching device for branching a received signal into a plurality of signals, wherein the respective signals into which the received signal is branched are transmitted toward the radar device. - View Dependent Claims (7)
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8. A radar mount direction alignment method for aligning a transmit/receive direction of a radar device, the device being mounted on a member on which a radar unit is mounted, the device having a relative angle sensor for sensing a relative angle with reference to a target, the method comprising:
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disposing a transmission section at a predetermined position;
detecting an angle relative to the transmission section by the relative angle sensor;
detecting an angle relative to the receiving section detected by the relative angle sensor; and
aligning the transmit/receive direction of the radar device in accordance with the angle relative to the transmission section the angle relative to the receiving section. - View Dependent Claims (9)
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10. A radar mount direction alignment method of aligning a transmit/receive direction of a radar device, the device being mounted on a member on which a radar unit is mounted, the device having a signal intensity sensor for receiving a signal reflected from a target and detecting the intensity of the receiving signal, the method comprising:
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placing a transmission section at a predetermined position;
detecting the intensity of the signal by the signal intensity sensor; and
aligning a transmit/receive direction of the radar device in accordance with the intensity of a signal transmitted from the transmission section. - View Dependent Claims (11)
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12. A radar mount direction alignment method of aligning a transmit/receive direction of a radar device, the device being mounted on a member on which a radar unit is mounted, the device having a signal intensity sensor for detecting the intensity of a signal received from the outside, the method further comprising:
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placing a plurality of transmission sections each for transmitting branched signals at different predetermined positions;
detecting the intensity of the signal by the signal intensity sensor; and
aligning a transmit/receive direction of the radar device in accordance with the intensity of signals transmitted from the transmission sections. - View Dependent Claims (13, 14, 15)
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16. A radar mount direction alignment method for aligning a transmit/receive direction of a radar device, the device being mounted on a member on which a radar unit is mounted, the device having a relative angle sensor for detecting a distance relative to a target, the method comprising:
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disposing a reflection target at a predetermined location;
detecting an angle relative to the reflection target by the relative angle sensor; and
aligning the transmit/receive direction of the radar device in accordance with the angle relative to the reflection target. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A radar device, comprising:
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a reflection sensitivity sensor for detecting the intensity of a signal reflected from a target;
a relative distance sensor for detecting a distance relative to the target; and
a detection sensitivity difference calculation device for calculating a difference in the sensitivity in detection of the intensity of a reflected signal which is susceptible to the influence of a distance, on the basis of a distance relative to the target detected by the relative distance sensor. - View Dependent Claims (26)
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27. A radar mount direction alignment method for aligning a transmit/receive direction of a radar device which is mounted on a member on which a radar device is mounted, such as a vehicle, and has a beam scanning function, the method comprising:
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disposing a receiving section for receiving a signal transmitted from the radar device at a predetermined position; and
detecting a change in the level of a signal received by the receiving section as a result of beam scanning; and
aligning the transmit/receive direction of the radar device in accordance with the change in the level of the signal. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35)
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36. A radar mount direction alignment device comprising:
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a receiving section for receiving a signal; and
a converter for converting the frequency of the signal into a lower frequency, the signal including a command for aligning a transmit/receive direction of a radar device.
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37. A radar mount direction alignment adjusting device for a radar being mounted on a vehicle and emitting a signal, the radar mount direction alignment adjusting device comprising:
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a first reflection unit including;
a first antenna for receiving the signal from the radar and transmitting the signal toward the radar;
a first transmission line for transmitting the signal received by the first antenna;
a first attenuator for attenuating the signal from the first transmission line by a first predetermined ratio; and
a first reflector for reflecting the signal from the first attenuator; and
a second reflection unit including;
a second antenna for receiving the signal from the radar and transmitting the signal toward the radar;
a second transmission line for transmitting the signal received by the second antenna;
a second attenuator for attenuating the signal from the second transmission line by a second predetermined ratio; and
a second reflector for reflecting the signal from the second attenuator, wherein the length of the first transmission line is different from the that of the second transmission line. - View Dependent Claims (38, 39, 40, 41, 42)
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43. A method for adjusting alignment of a mount direction of a radar, the method comprising:
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receiving a signal from the radar by a first reflection unit;
transmitting a first signal from the first reflection unit to the radar, the signal corresponding to a first distance;
receiving the signal from the radar by a second reflection unit;
transmitting a second signal from the second reflection unit to the radar, the second signal corresponding to a second distance; and
adjusting the alignment of the radar in accordance with the first signal and the second signal.
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Specification