DE102017222224A1 - SENSOR ARRANGEMENT AND MOTOR VEHICLE - Google Patents

Abstract

The invention relates to a sensor arrangement (1) for a motor vehicle (4) with a holding frame (3) which can be fastened to the motor vehicle (4) and a sensor device (2) which can be mounted in the holding frame (3), wherein the holding frame (3) comprises a first frame part (31) and a second frame part (32), wherein the first frame part (31) is connectable to the motor vehicle, and wherein the sensor device (2) between the first frame part (31 and the second frame part (32) can be introduced and by fastening of the first frame part (31) can be mounted on the second frame part (32) in the holding frame (3).

Description

The invention relates to a sensor arrangement for a motor vehicle and a motor vehicle.

Modern driver assistance systems can rely on a variety of sensor data. Thus, vehicles may have cameras, radar sensors, infrared sensors or lidar sensors, which are mounted in the outer area of the vehicle and monitor respective surroundings of the vehicle.

Based on the sensor data, the driver assistance systems can detect objects in the surroundings of the vehicle and thus distinguish, for example, between passable area and obstacles.

Using radar data, distances, speeds and angles of the objects can be measured using special modulation techniques. Certain movement patterns can even detect types of objects. For example, pedestrians can be identified as such using a micro-Doppler effect.

An exemplary object detection system is known from DE 19934670 A1 known, wherein different object detectors have different detection ranges and / or detection ranges.

In order to obtain reliable measurement results, the sensors must be securely fastened to the motor vehicle in order to prevent the orientation of the sensors from unintentionally changing. In particular, the attachment must be able to withstand minor shocks when driving over obstacles.

In addition, the bracket can be easily damaged in the event of stronger impacts or minor collision accidents.

Often then an exchange of the entire bracket is required.

It is therefore an object of the invention to improve the mounting of sensor devices on a motor vehicle.

The invention provides a sensor arrangement for a motor vehicle having the features of patent claim 1 and a motor vehicle having the features of patent claim 14.

Further preferred embodiments are subject of the dependent claims.

According to a first aspect, the invention accordingly relates to a sensor arrangement for a motor vehicle, which has a holding frame which can be fastened to the motor vehicle and a sensor device which can be mounted in the holding frame. The holding frame has a first frame part and a second frame part, wherein the first frame part is connectable to the motor vehicle, and wherein the sensor device between the first frame part and the second frame part can be introduced and can be mounted by attaching the first frame part on the second frame part in the holding frame ,

According to a second aspect, the invention accordingly relates to a motor vehicle with a sensor arrangement.

According to the invention, the holding frame is divided into two, ie consists of a first frame part and a second frame part, which are connected to each other during assembly. If it comes in an accident to damage the support frame, it is therefore sufficient to replace only the damaged frame part. As a result, the repair costs and repair costs can be reduced.

According to a preferred embodiment of the sensor arrangement, the first frame part is made of metal. In contrast to holders, which are made entirely of plastic, this makes the holder much more robust. The first frame part is preferably designed to absorb at least slight collisions well. For this purpose, the second frame part and the sensor device are preferably spaced after assembly in the vehicle of the components of the vehicle itself. Only the first frame part contacts the vehicle. As a result, shocks are not transmitted directly to the sensor device, so that it is not damaged even in light accidents.

The first frame part is also preferably designed as a protective element, which surrounds the sensor device at least partially and protects against damage. In particular, the first frame part can protect the sensor device from damage by impinging stones.

According to a preferred embodiment of the sensor arrangement, the second frame part is made of plastic. The second frame part is characterized very cost effective.

According to a preferred development of the sensor arrangement, the first frame part has at least one opening. In the mounted state, the sensor device is designed to emit and / or receive sensor radiation through the opening. The remaining part of the sensor device is preferably shielded by the first frame part. The functionality of the sensor is thus not impaired, since in particular the Capture angle is not reduced by the bracket.

According to a development of the sensor arrangement, the first frame part has at least one flange section provided for connection to the motor vehicle. The at least one flange portion lies in a plane. The first frame part further has at least one holding section, wherein the sensor device and the second frame part are in the mounted state between the plane and the at least one flange section. Preferably, the first frame part at least partially surrounds the sensor device and the second frame part and shields them better.

According to a development of the sensor arrangement, the first frame part has at least one connecting section which connects the at least one flange section to the holding section.

According to a development of the sensor arrangement, the holding frame has wall sections with at least one spacer. The at least one spacer spaces the sensor device in the mounted state of the wall portions. The spacing allows the air within the frame device to circulate better, so that the sensor device is better cooled.

According to a development of the sensor arrangement, the sensor device has a connection connection for data exchange. The sensor device can be connected to a CAN bus of the motor vehicle or to further evaluation devices and control elements via the connection connection. In particular, the sensor device can be connected to a driver assistance system of the motor vehicle.

According to a development of the sensor arrangement, the holding frame has a recess for the connection connection. Preferably, the sensor device is completely surrounded by the holding frame except for the recess. The connection port can be mounted at any angle.

According to a development of the sensor arrangement, the first frame part can be screwed to the second frame part. However, the frame parts can also be connected to each other by means of bolts, rivets or by welding.

According to a preferred embodiment of the sensor arrangement, the holding frame has at least one reinforcing rib. This increases stability and better protects the sensor device.

According to a development of the sensor arrangement, the sensor device can be fastened by means of screws to the holding frame. However, the sensor device can also be fixed in a form-fitting manner without additional fixing elements by fastening the first frame part to the second frame part.

According to a development of the sensor arrangement, the sensor device is a radar sensor. However, according to further embodiments, the sensor device may also be any other vehicle sensor, in particular a lidar sensor, an infrared sensor, an ultrasonic sensor or a vehicle camera.

According to a development of the motor vehicle, the holding frame is fixed by welding or by means of screws.

The present invention will be explained in more detail with reference to the exemplary embodiments indicated in the schematic figures of the drawings.

• 1 ein schematisches Blockdiagramm einer Sensoranordnung gemäß einer Ausführungsform der Erfindung;
• 2 eine schematische Schrägansicht auf die Oberseite einer Sensorvorrichtung einer Sensoranordnung;
• 3 eine schematische Schrägansicht auf die Oberseite eines ersten Rahmenteils;
• 4 eine schematische Draufsicht auf die Oberseite des ersten Rahmenteils;
• 5 eine schematische Schrägansicht auf die Oberseite eines zweiten Rahmenteils;
• 6 eine schematische Draufsicht auf die Oberseite des zweiten Rahmenteils;
• 7 eine schematische Explosionsansicht der Sensoranordnung; und
• 8 ein schematisches Blockdiagramm eines Kraftfahrzeugs.

Show it:

• 1 a schematic block diagram of a sensor arrangement according to an embodiment of the invention;
• 2 a schematic oblique view of the top of a sensor device of a sensor assembly;
• 3 a schematic oblique view of the top of a first frame part;
• 4 a schematic plan view of the top of the first frame part;
• 5 a schematic oblique view of the top of a second frame part;
• 6 a schematic plan view of the top of the second frame part;
• 7 a schematic exploded view of the sensor assembly; and
• 8th a schematic block diagram of a motor vehicle.

In all figures, the same or functionally identical elements and devices are provided with the same reference numerals.

1 shows a schematic block diagram of a sensor arrangement 1 according to an embodiment of the invention. The sensor arrangement 1 includes a support frame 3 with two frame parts 31 . 32 , wherein the first frame part 31 can be connected to a motor vehicle. The first frame part 31 can preferably be screwed to a structural element of the motor vehicle.

Furthermore, the sensor arrangement comprises 1 a sensor device 2 , In the sensor device 2 it may be any vehicle sensor, such as a vehicle camera, an infrared camera, a lidar sensor or an ultrasonic sensor. The sensor device is particularly preferably 2 around a radar sensor.

The sensor device 2 can in the holding frame 3 be mounted by the sensor device 2 between the first frame part 31 and the second frame part 32 is introduced and the frame parts 31 . 32 be connected to each other.

In 2 Figure 3 is a schematic oblique view of the top of an exemplary sensor device 2 illustrated. The sensor device 2 is substantially cuboid and includes a front wall portion 23 and side wall sections 24 , The front wall section 23 has a first opening 25 on, wherein the sensor device 2 is adapted to sensor radiation through the first opening 25 send out. The sensor radiation can be, for example, radar waves or laser radiation. The sensor radiation is therefore electromagnetic waves.

The front wall section 23 further includes a second opening 26 , which is adapted to receive the sensor radiation reflected at an object.

The invention is not limited to the embodiment shown. Thus, only a single opening can be provided which emits both sensor radiation and receives sensor radiation. Next, the sensor device 2 be configured to receive only radiation, but not to emit radiation. For example, it may be a vehicle camera which receives electromagnetic radiation in the visible or in the infrared range.

The sensor device 2 further includes a connection port 22 , which at one of the lateral wall sections 24 is arranged. About the connection port 22 can the sensor device 2 be connected to a CAN bus of the motor vehicle.

The sensor device 2 may be configured to evaluate the received sensor radiation. The sensor device 2 however, it is also possible to generate only sensor data on the basis of the received sensor radiation, which are then evaluated by evaluation devices (not shown) of the motor vehicle.

3 shows a schematic oblique view and 4 a schematic plan view of the top of a first frame part 31 ,

The first frame part 31 has a rectangular holding section 311 with a likewise rectangular opening or recess 317 on.

Substantially perpendicular to the holding section 311 run on two opposite sides connecting sections 312 to which a first flange portion 313 or a second flange portion 314 connect, which in an xy plane parallel to the holding section 311 run.

The first flange section 313 has two first holes 315 on while the second flange portion 314 a single first hole 315 having. Next are in the holding section 311 three second holes 316 educated. However, the invention is not limited to the embodiment shown. In particular, more or less or differently distributed wells can 315 . 316 be provided.

Next have the holding section 311 , the connecting sections and the flange sections 313 . 314 reinforcing ribs 318 on.

5 shows a schematic oblique view and 6 a schematic plan view of the top of a second frame part 32 , The second frame part 32 has a receiving section 329 for receiving the sensor device 2 on. The recording section 329 includes a rear wall section 321 as well as three lateral wall sections 322 which forms a cavity for the sensor device 2 partially include. On the remaining fourth side of the receiving section 312 is a recess 3210 formed, which the recording of the connection terminal 22 the sensor device 2 serves.

At the rear wall section 321 are two first spacers 326 intended. Next are at the edge between the rear wall section 321 and a side wall sections 322 two second spacers 327 and at the opposite edge a third spacer 328 , which are adapted to the sensor device 2 to contact and from the wall sections 321 . 322 to space.

At one of the lateral wall sections 322 are two first screw flanges 323 trained, which are in one x - y Plane parallel to the rear wall section 321 extend. Next is between the remaining side wall sections 322 a likewise parallel second screw flange 324 educated. The screw flanges 323 . 324 have respective internal threads 325 on which perpendicular to x - y Level.

In 7 the assembly of the sensor arrangement is illustrated in a schematic exploded view. For this purpose, the sensor device 2 between the first frame part 31 and the second frame part 32 positioned. The sensor device 2 will be in the recording section 329 of the second frame part 32 inserted, which the sensor device 2 positively receives. The sensor device 2 lies on the spacers 326 . 327 . 328 on. Subsequently, screws 33 through the second holes 316 of the first frame part 31 performed and in the internal thread 325 the screw flanges 323 . 324 screwed. This will be the first frame part 31 with the second frame part 32 connected and at the same time the sensor device 2 in the support frame formed thereby 3 fixed.

Over additional, not pictured screws, which through the first boreholes 315 can be guided, the entire sensor array 1 be bolted to a motor vehicle.

8th shows a schematic block diagram of a motor vehicle 4 , which is a sensor device described above 1 having. The motor vehicle may be, for example, a car , one truck , a motorcycle, an airplane or a ship.

The support frame 3 is on a structural element of the motor vehicle 4 fixed by screwing or welding.

LIST OF REFERENCE NUMBERS

1

sensor arrangement

2

sensor device

3

holding frame

4

motor vehicle

22

connection port

23

front wall section

24

lateral wall section

25

first opening

26

second opening

31

first frame part

32

second frame part

311

holding section

312

connecting portion

313

first flange section

314

second flange portion

315

first borehole

316

second borehole

317

opening

318

reinforcing rib

321

rear wall section

322

lateral wall section

323

first screw flange

324

second screw flange

325

inner thread

326

first spacer

327

second spacer

328

third spacer

329

receiving portion

3210

recess

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19934670 A1 [0005]

Claims (15)

Sensor arrangement (1) for a motor vehicle (4), having a holding frame (3) which can be fastened to the motor vehicle (4) and a sensor device (2) which can be mounted in the holding frame (3), wherein the holding frame (3) comprises a first frame part (31) and a second frame part (32), wherein the first frame part (31) is connectable to the motor vehicle, and wherein the sensor device (2) between the first frame part (31 and the second frame part (32) can be introduced and by fastening the first frame part ( 31) on the second frame part (32) in the holding frame (3) can be mounted. Sensor arrangement (1) according to Claim 1 , wherein the first frame part (31) is made of metal. Sensor arrangement (1) according to Claim 1 or 2 , wherein the second frame part (32) is made of plastic. Sensor arrangement (1) according to one of the preceding claims, wherein the first frame part (31) has at least one opening (317), and wherein the sensor device (2) is designed to emit sensor radiation through the opening (317) in the installed state and / or to recieve. Sensor arrangement (1) according to one of the preceding claims, wherein the first frame part (31) at least one provided for connection to the motor vehicle flange portion (314, 313) which lies in a plane, and wherein the first frame part (31) at least one holding portion (311), wherein in the assembled state, the sensor device (2) and the second frame part (32) between the plane and the at least one flange portion (313, 314) are arranged. Sensor arrangement (1) according to Claim 5 in that the first frame part (31) has at least one connecting section (312) which connects the at least one flange section (313, 314) to the holding section (311). Sensor arrangement (1) according to one of the preceding claims, wherein the holding frame (3) wall sections (321, 322) with at least one spacer (326, 327, 328), wherein the at least one spacer (326, 327, 328), the sensor device ( 2) in the assembled state of the wall sections (321, 322) spaced. Sensor arrangement (1) according to one of the preceding claims, wherein the sensor device (2) has a connection connection (22) for data exchange. Sensor arrangement (1) according to one of the preceding claims, wherein the holding frame (3) has a recess (3210) for the connection terminal (22). Sensor arrangement (1) according to one of the preceding claims, wherein the first frame part (31) with the second frame part (32) is screwed. Sensor arrangement (1) according to one of the preceding claims, wherein the holding frame (3) has at least one reinforcing rib (318). Sensor arrangement (1) according to one of the preceding claims, wherein the sensor device (2) by means of screws on the holding frame (3) can be fastened. Sensor arrangement (1) according to one of the preceding claims, wherein the sensor device (2) is a radar sensor. Motor vehicle (4) with a sensor arrangement (1) according to one of the preceding claims. Motor vehicle (4) according to Claim 14 , wherein the holding frame (3) is fixed by welding or by screws.

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