JP5862307B2 - Sensor detection range changing device - Google Patents

Description

  The present invention relates to a sensor detection range changing device that changes a detection range of a vehicle rear side by a sensor.

  If the vehicle is parked from the front in the parking lot, the exit is backward, and the vehicle traveling in the aisle is dangerous because it enters the driver's blind spot. Therefore, as a part of a function such as a rear side warning (a function of notifying the possibility of contact when the vehicle is approaching the rear or side of the host vehicle when the lane is changed, see Patent Document 1) There has been devised a backward exit support for notifying the driver of the presence of passing vehicles or the blind spot at the time of oblique parking (see Patent Document 2). The oblique parking here does not mean parking on an inclined surface but means parking in a parking space that is inclined with respect to the passage when viewed from above.

  For back exit assistance, a rear-side alarm radar or camera is used as a sensor (hereinafter referred to as a rear-side alarm sensor). For example, when using a radar, the rear side of the vehicle is used under normal use conditions. The vehicle has a detection range of about 120 ° to the side, and can detect a vehicle that is about to pass behind the host vehicle in the normal detection range when parking in a parking space perpendicular to the passage. Can be notified.

  FIG. 2 shows a detection range by a conventional rear side warning sensor when parking in a parking space in a direction perpendicular to the passage. On the rear side of the host vehicle 11, there are rear side alarm sensor mounting portions 5 a and 5 b on the left and right sides, and rear side alarm sensor sensors are respectively attached. There are adjacent parked vehicles 12 and 13 on both sides of the host vehicle 11. At this time, the detection range of the rear side warning sensor in the passage 17 is the rear side of the host vehicle 11 like the detection range 20, and does not intersect. In this state, it is possible to sufficiently detect the passing vehicle 14.

JP 2011-141746 A JP 2011-114467 A

  However, in the apparatus as described above, the driver can be notified of the blind spot of the rear side warning sensor at the time of oblique parking, but the passing vehicle may not be detected by the rear side warning sensor due to the blind spot. there were.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to reduce the blind spot during oblique parking as described above.

A sensor detection range changing device according to a first invention for solving the above-mentioned problems is as follows.
A shift lever position determination unit for determining the position of the shift lever;
An oblique parking determination unit for determining whether the host vehicle is parked diagonally;
A rear side warning sensor for monitoring the rear side of the host vehicle;
When the information that the position of the shift lever is reverse is input from the shift lever position determination unit and the information that the host vehicle is parked diagonally is input from the diagonal parking determination unit, the rear side If it is determined from the information input from the direction warning sensor that a parked vehicle that is substantially parallel to and adjacent to the host vehicle exists on the passing vehicle side passing through the passage, an instruction to change the detection range of the rear side warning sensor is given. A rear side alarm control unit,
When an instruction to change the detection range of the rear side warning sensor is input from the rear side warning control unit, the rear side of the host vehicle is obliquely parked so that one side of the rear of the host vehicle protrudes toward the passage side. A sensor detection range changing operation unit that changes the detection range of the rear side warning sensor toward the passage located on the opposite side to the one side of the rear portion of the host vehicle. It is characterized by that.

A sensor detection range changing device according to a second invention for solving the above-mentioned problems is as follows.
In the sensor detection range changing device according to the first invention,
The sensor detection range changing operation unit changes the detection range of the rear side warning sensor by a driver operating a switch.

  According to the sensor detection range changing device according to the first aspect of the present invention, when it is determined that the host vehicle is obliquely parked and the parked vehicle adjacent to the host vehicle is present on the passing vehicle side passing through the passage, The detection range of the rear side warning sensor is crossed by facing the inside of the own vehicle, so that the portion that was a blind spot of the rear side warning sensor can be suppressed, and the vehicle traveling along the passage is moved early. It will be possible to discover.

  According to the sensor detection range changing device according to the second aspect of the invention, not only the detection range of the rear side warning sensor is automatically changed, but also the detection range of the rear side warning sensor according to the driver's intention. Can be changed.

It is a block diagram of the sensor detection range change apparatus which concerns on Example 1 of this invention. It is the schematic explaining the detection range at the time of leaving from parking to the parking space of the direction at right angles to a passage by a prior art. It is the schematic explaining the detection range at the time of leaving from the diagonal parking by a prior art. It is the schematic explaining the detection range at the time of leaving from the diagonal parking by the sensor detection range change apparatus which concerns on Example 1 of this invention. It is a flowchart explaining operation | movement of the sensor detection range change apparatus which concerns on Example 1 of this invention.

  Hereinafter, a sensor detection range changing device according to the present invention will be described with reference to the drawings in the embodiments.

  An apparatus according to Embodiment 1 of the present invention will be described with reference to FIG. This apparatus includes a front image recognition camera 1, an oblique parking determination unit 2, a shift lever ECU (Electronic Control Unit) 3, a rear side warning ECU 4, a rear side warning sensor, and a sensor detection range changing operation. A portion 6 is provided and mounted on the vehicle body 7.

  The above-described front image recognition camera 1 is a camera that captures the front of the vehicle, and the captured image data is output to the oblique parking determination unit 2.

  The rear side warning sensor 5 described above monitors the rear side of the host vehicle 11 with a radar or a camera.

  The above-described oblique parking determination unit 2 is configured such that the host vehicle 11 is inclined based on information input from the front image recognition camera 1 and the rear side warning sensor 5 as in the parking direction determination unit described in Patent Document 1. Determine whether it is parking.

  As a determination method by the oblique parking determination unit 2, for example, in FIGS. 2 and 3, the white line 15 on both sides of the host vehicle 11 and the boundary line 16 of the passage are connected to the rear side alarm sensor mounting units 5a and 5b. It is detected by the attached rear side warning sensor (not shown) and the front image recognition camera 1, and it is determined from the positional relationship whether or not the parking is oblique.

  The above-described shift lever ECU (shift lever position determination unit) 3 has a function of determining the position of the shift lever, and outputs the determination result to the rear side warning ECU 4.

  The above-mentioned rear side warning ECU 4 inputs information that the position of the shift lever is R (reverse) from the shift lever ECU 3, and information that the host vehicle 11 is diagonally parked from the diagonal parking determination unit 2. Is input, it is determined from the information input from the rear side warning sensor 5 whether the parked vehicle 12 adjacent to the host vehicle 11 exists on the passing vehicle 14 side passing through the passage, and the parked vehicle 12 exists. If it judges that it has, it has a function which instruct | indicates the change of the detection range 20 of the sensor 5 for rear side warnings.

  The above-described sensor detection range changing operation unit 6 is installed in the rear side alarm sensor 5 or installed outside the rear side alarm sensor 5 (in FIG. 1, the case where it is built in is shown), When an instruction to change the detection range of the rear side warning sensor 5 is input from the rear side warning ECU 4, the detection range of the rear side warning sensor 5 is changed so as to intersect.

  Here, the change of the detection range of the rear side warning sensor 5 will be described in detail with reference to FIGS.

  FIG. 3 is a detection range of the rear side warning sensor during oblique parking. As can be seen from this, in the case of oblique parking where the right rear of the host vehicle 11 protrudes toward the passage with respect to the passage and the traveling direction of the passage is the right direction, the rear side in the direction perpendicular to the passage 17 Since the position of the direction alarm sensor mounting portion 5a is separated from the position of the rear end portion 12a of the adjacent parked vehicle 12, the detection range 20 is narrowed and a blind spot 21 in the passage is generated.

  When this apparatus is operated at this time, as shown in FIG. 4, the detection range 20 of the rear side alarm sensor (not shown) attached to the rear side alarm sensor attaching portions 5a and 5b is located inside the host vehicle 11. Changed to face. Then, the detection ranges 20 intersect, the blind spot 21 generated before the change is eliminated, and the passing vehicle 14 can be sufficiently detected.

  The detection range of the rear side warning sensor can be changed by either changing the detection range within the rear side warning sensor or changing the angle by mechanically moving the rear side warning sensor itself. It can be considered, but either is acceptable

  The operation of this apparatus will be described below using the flowchart of FIG. In the following description, a camera is used for the rear side warning sensor 5.

  In step S1, the shift lever ECU 3 determines whether the position of the shift lever is P (parking) or R (reverse). If P or R, the process proceeds to step S2, and if neither P nor R, the apparatus does not operate.

  In step S <b> 2, the image data input immediately before the front image recognition camera 1 and the rear side warning sensor 5 is transmitted to the oblique parking determination unit 2.

  In step S3, the diagonal parking determination unit 2 determines whether or not the host vehicle 11 is diagonally parked. If it is diagonal parking, it will transfer to step S3, and if this is not diagonal parking, this apparatus will not operate | move.

  In step S4, shift lever position information is acquired by the shift lever ECU 3.

  In step S5, the shift lever ECU 3 determines whether the position of the shift lever is R or not. If it is R, the process proceeds to step S7, and if it is not R, the process proceeds to step S6.

  In step S6, the shift lever ECU 3 determines whether the position of the shift lever is D (drive) or the forward gear. If it is D or the forward gear, the process proceeds to step S1, and if not, the process proceeds to step S4.

  In step S7, the presence or absence of the adjacent parked vehicle 12 is confirmed from the information input from the rear side warning sensor 5 in the rear side warning ECU 4.

  In step S8, it is determined whether or not there is a parked vehicle 12 on the passing vehicle 14 side. If there is a parked vehicle 12, the process proceeds to step S9. If there is no parked vehicle 12, the process proceeds to step S1.

  That is, the above-described steps S1 to S3 are portions for determining oblique parking, and steps S4 to S8 are portions for determining whether or not the detection range needs to be changed.

  Furthermore, in step S9, the sensor detection range changing operation unit 6 changes the detection range of the rear side warning sensor 5 so as to face inward according to an instruction from the rear side warning ECU 4.

  In step S10, the shift lever ECU 3 acquires shift lever position information.

  In step S11, the shift lever ECU 3 determines whether or not the position of the shift lever is other than R. If it is other than R, the process proceeds to step S12, and if it is R, the process proceeds to step S10.

  In step S12, the detection range of the rear side warning sensor 5 is changed to a normal range by the sensor detection range change operating unit 6 in accordance with an instruction from the rear side warning ECU 4.

  As described above, in this apparatus, when it is determined that the host vehicle is obliquely parked and the parked vehicle adjacent to the host vehicle is on the passing vehicle side passing through the passage, By crossing the detection ranges of the sensors toward the inside of the vehicle, it is possible to detect the part that was the blind spot of the rear side warning sensor, and to find the vehicle traveling in the passage at an early stage It becomes possible.

  In addition, when the detection range of the rear side warning sensor is changed by operating this device, the detection range on the passing vehicle side widens, while the opposite side (advancing direction side of the passing vehicle) is the rear side warning sensor. However, since the other side is in a direction that can be easily confirmed by visual observation by the driver, if it is a walking level of a pedestrian, it will be in time to deal with it.

  In addition, the sensor detection range change operation part of this apparatus does not only operate | move based on the instruction | indication of ECU for rear side warning as mentioned above, but it is good also as switching possible by a driver | operator's switch operation. If it does in this way, the detection range of the sensor for rear side warnings can be changed by a driver's intention.

  The present invention is suitable as a sensor detection range changing device that changes the detection range of a vehicle rear side by a sensor.

DESCRIPTION OF SYMBOLS 1 Front image recognition camera 2 Diagonal parking determination part 3 Shift lever ECU
4 ECU for rear side warning
5 Rear side warning sensor 5a, 5b Rear side warning sensor mounting part 6 Sensor detection range changing operation part 7 Car body 11 Own vehicle 12, 13 (adjacent) parked vehicle 12a (parked vehicle) rear end part 14 Vehicle 15 White line 16 Path boundary 17 Path 20 Detection range 21 Blind spot (in path)

Claims (2)

A shift lever position determination unit for determining the position of the shift lever;
An oblique parking determination unit for determining whether the host vehicle is parked diagonally;
A rear side warning sensor for monitoring the rear side of the host vehicle;
When the information that the position of the shift lever is reverse is input from the shift lever position determination unit and the information that the host vehicle is parked diagonally is input from the diagonal parking determination unit, the rear side If it is determined from the information input from the direction warning sensor that a parked vehicle that is substantially parallel to and adjacent to the host vehicle exists on the passing vehicle side passing through the passage, an instruction to change the detection range of the rear side warning sensor is given. A rear side alarm control unit,
When an instruction to change the detection range of the rear side warning sensor is input from the rear side warning control unit, the rear side of the host vehicle is obliquely parked so that one side of the rear of the host vehicle protrudes toward the passage side. A sensor detection range changing operation unit that changes the detection range of the rear side warning sensor toward the passage located on the opposite side to the one side of the rear portion of the host vehicle. A sensor detection range changing device.   The sensor detection range changing device according to claim 1, wherein the sensor detection range change operating unit changes a detection range of the rear side warning sensor by a driver operating a switch.