Approaching vehicle detection apparatus and method
US-2015083921-A1 · Mar 26, 2015 · US
Radar device and interference prevention method
US2016349354A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016349354-A1 |
| Application number | US-201615156319-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 16, 2016 |
| Priority date | May 27, 2015 |
| Publication date | Dec 1, 2016 |
| Grant date | — |
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Abstract
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In a radar device mounted in a host vehicle, a radar transmitting unit transmits a radar signal; a light detection unit detects ON or OFF of a light of another vehicle in which the radar device is mounted; and a timing control unit sets a transmission timing of the radar signal and a light ON timing of a light of the host vehicle, the light ON timing is synchronized with the transmission timing on basis of detected ON or OFF of the light of the other vehicle. The set transmission timing is different from a transmission timing of a radar signal of the radar device mounted in the other vehicle.
First claim
Opening claim text (preview).
What is claimed is: 1 . A radar device mounted in a host vehicle, comprising: a radar transmitter that transmits a radar signal; a light detector that detects ON or OFF of a light of another vehicle in which the radar device is mounted; and a controller that sets a transmission timing of the radar signal and a light ON timing of a light of the host vehicle, the light ON timing being synchronized with the transmission timing on basis of detected ON or OFF of the light of the other vehicle, and the set transmission timing being different from a transmission timing of a radar signal of the radar device mounted in the other vehicle. 2 . The radar device according to claim 1 , wherein a transmission cycle including a transmission period and a transmission suspension period of the radar signal and an ON/OFF cycle including an light ON period and a light OFF period of the light are synchronized with each other; and the controller sets the transmission period that is different from a transmission period of the radar signal of the radar device mounted in the other vehicle. 3 . The radar device according to claim 2 , wherein the controller sets the transmission period in a period same as the light ON period and sets the transmission suspension period in a period same as the light OFF period. 4 . The radar device according to claim 2 , wherein the controller sets the transmission period in a period same as the light OFF period and sets the transmission suspension period in a period same as the light ON period. 5 . The radar device according to claim 1 , further comprising: a radar signal detector that detects a radar signal transmitted from the other vehicle; and a determiner that determines correspondence between (i) a transmission period and a transmission suspension period of the radar signal transmitted from the other vehicle and (ii) and a light ON period and a light OFF period of the light of the other vehicle on basis of ON or OFF of the light of the other vehicle and a detection result obtained by the radar signal detector, the controller setting the transmission timing and the light ON timing on basis of the correspondence. 6 . The radar device according to claim 1 , wherein the controller sets, as the transmission timing, any one of a plurality of periods obtained by dividing an ON/OFF cycle of the light by the total number of host and other vehicles. 7 . The radar device according to claim 1 , wherein the controller turns on the light by using a light ON/OFF pattern known to a plurality of vehicles in a transmission period of the radar signal; and the controller does not transmit the radar signal in a case where the known light ON/OFF pattern of the light of the other vehicle is detected. 8 . The radar device according to claim 1 , wherein the controller transmits the radar signal in a case where the controller turns on the light by using a first light ON/OFF pattern indicative of request for transmission of the radar signal and then a second light ON/OFF pattern of the light of the other vehicle is detected, the second light ON/OFF pattern being indicative of permission for transmission of the radar signal. 9 . The radar device according to claim 8 , wherein in a case where the first light ON/OFF pattern of the other vehicle is detected, the controller turns on the light by using the second light ON/OFF pattern and suspends transmission of the radar signal for a predetermined period. 10 . The radar device according to claim 8 , wherein the controller turns on the light by using the second light ON/OFF pattern in a case where the first light ON/OFF pattern of the other vehicle is detected and the first light ON/OFF pattern of another vehicle is not detected. 11 . The radar device according to claim 8 , wherein the controller suspends transmission of the radar signal for a predetermined period in a case where the light is not turned on by using the first light ON/OFF pattern and where the second light ON/OFF pattern of the other vehicle is detected. 12 . The radar device according to claim 8 , wherein the first light ON/OFF pattern indicates an identification number of a vehicle that requests transmission of the radar signal; the second light ON/OFF pattern indicates an identification number of a vehicle to be given permission to transmit the radar signal; and the controller transmits the radar signal in a case where the detected second light ON/OFF patterns of all of other vehicles indicate an identification number of the host vehicle. 13 . The radar device according to claim 12 , wherein the controller turns on the light by using the first light ON/OFF pattern after elapse of a random period in a case where at least one of the detected second light ON/OFF patterns of all of the other vehicles does not indicate the identification number of the host vehicle. 14 . The radar device according to claim 8 , wherein each of the first light ON/OFF pattern and the second light ON/OFF pattern indicates a continuation period of transmission of the radar signal; and the controller suspends transmission of the radar signal for the continuation period indicated by the detected first light ON/OFF pattern or second light ON/OFF pattern of the other vehicle. 15 . The radar device according to claim 8 , wherein each of the first light ON/OFF pattern and the second light ON/OFF pattern indicates a continuation period of transmission of the radar signal; and the controller turns on the light by using a longest one of a plurality of continuation periods indicated by the detected first light ON/OFF patterns of a plurality of other vehicles. 16 . The radar device according to claim 8 , wherein the first light ON/OFF pattern indicates an identification number of a vehicle that requests transmission of the radar signal; a frequency channel used for transmission of the radar signal and the identification number of the vehicle are associated with each other; and in a case where frequency channels associated with respective identification numbers of a plurality of other vehicles indicated by the first light ON/OFF patterns of the plurality of other vehicles, the controller turns on the light for each of the plurality of other vehicles by using the second light ON/OFF pattern. 17 . The radar device according to claim 8 , wherein the first light ON/OFF pattern indicates an identification number of a vehicle that requests transmission of the radar signal; an interference amount between another vehicle and the host vehicle and an identification number of the other vehicle are associated with each other; and the controller turns on the light for the other vehicle by using the second light ON/OFF pattern in a case where the interference amount associated with the identification number indicated by the first light ON/OFF pattern of the other vehicle is equal to or larger than a predetermined threshold value, and the controller does not turn on the light for the other vehicle by using the second light ON/OFF pattern in a case where the interference amount indicated by the first light ON/OFF pattern of the other vehicle is less than the predetermined threshold value. 18 . The radar device according to claim 1 , wherein an ON/OFF cycle of the light includes a first period in which luminance of the light is kept and a second period in which the light is turned on and off in a manner indicating a control signal concerning transmission of the radar signal. 19 . The radar device according
Assignees
Inventors
Classifications
Combinations of sonar systems with lidar systems; Combinations of sonar systems with systems not using wave reflection · CPC title
Combination of radar systems with cameras · CPC title
Combinations of sonar systems · CPC title
in the front of the vehicles · CPC title
of land vehicles · CPC title
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Frequently asked questions
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- What does patent US2016349354A1 cover?
- In a radar device mounted in a host vehicle, a radar transmitting unit transmits a radar signal; a light detection unit detects ON or OFF of a light of another vehicle in which the radar device is mounted; and a timing control unit sets a transmission timing of the radar signal and a light ON timing of a light of the host vehicle, the light ON timing is synchronized with the transmission timing…
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01S7/023. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Dec 01 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).