AT18019U1 - DEVICE FOR DETECTING AND ANALYZING THE DRIVING BEHAVIOR OF A VEHICLE DRIVER - Google Patents

Abstract

Device (1) for detecting and analyzing the driving behavior of a vehicle driver, in particular a student driver, with a reading unit (2) which can be arranged in a vehicle (100) for reading out vehicle parameters, the reading unit (2) being connected to a data bus (101) of a vehicle ( 100) can be connected, wherein a data processing unit (3) separate from the readout unit (2) is provided for processing the vehicle parameters read out by the readout unit (2), the readout unit (2) and the data processing unit (3) being in wireless data connection with one another.

Description

Description

The invention relates to a device for detecting and analyzing the driving behavior of a vehicle driver, in particular a learner driver, with a readout unit that can be arranged in a vehicle for reading out vehicle parameters, the readout unit being connectable to a data bus of a vehicle, a vehicle with such a device and a method for detecting and analyzing the driving behavior of a vehicle driver, in particular a learner driver, using such a device.

[0002] Such devices are already known. In the prior art, a computer or data logger and a camera are installed in a vehicle. The camera records an area which corresponds to a field of vision of a driver of the vehicle. Vehicle parameters are read out via the vehicle's data bus and stored in the computer or data logger. The vehicle parameters and the image and/or video material recorded by the camera are either already saved in a time-synchronized manner or must be subsequently synchronized.

However, devices known from the prior art have some disadvantages. The computer or data logger installed in the vehicle, along with the associated cabling, requires a lot of space and energy. This means the system must be unplugged or powered down after each use and plugged in or powered up before each use. In addition, such a system is expensive and difficult to install.

Another major disadvantage is that the combination of vehicle parameters and image and/or video material only takes place after a driving lesson or after the end of the recording. A discussion of the situations experienced during a driving lesson based on the processed image and/or video material (combination of vehicle parameters and image and/or video material) can therefore only take place after the driving lesson. However, this takes up time from the driving lesson, which could otherwise be used for practice, for example.

A permanently installed camera has the disadvantage that only a certain, unchangeable area can be recorded. In addition, it is not possible to take photos of the vehicle from outside, which would be helpful, for example, in the course of driving safety training.

The object of the invention is to at least partially eliminate the disadvantages described above and to provide a device that is improved compared to the prior art, a vehicle with such a device and a method for detecting and analyzing the driving behavior of a vehicle driver, in particular a learner driver of such a device.

[0007] This problem is solved by the features of independent claims 1, 13 and 16.

According to the invention, it is therefore provided that a data processing unit separate from the readout unit is provided for processing the vehicle parameters read out by the readout unit, the readout unit and the data processing unit being in wireless data connection with one another.

The readout unit therefore only has to read out the vehicle parameters via the vehicle's data bus and transmit them wirelessly to the data processing device.

The readout unit can thus be greatly reduced in size and functionality compared to a computer or data logger according to the prior art, since the data processing takes place on the separate data processing unit. The data processing unit does not have to be arranged in the vehicle due to the wireless data connection.

[0011] This makes installation simple and space-saving, since, among other things, the cabling can be reduced. Essentially, the readout unit only needs to be connected to the data bus and the vehicle's supply voltage. It is also

It is conceivable that the device is supplied with power via an external battery.

In addition, with such an embodiment it is possible to greatly reduce the energy requirement of the readout unit. This is made possible, among other things, by the fact that only the most necessary parameters are read out by the readout unit and data is only transferred when one of the parameters changes. In addition, the readout unit can temporarily be put into standby mode, in which the power requirement is only 130 HA. The readout unit can therefore be in operation continuously and does not have to be switched on or plugged in before each use.

Since the readout unit is designed in such a minimalist way, not only the energy requirement but also the costs for such a readout unit can be greatly reduced through appropriate hardware design and the selection of components.

With regard to a vehicle according to the invention, it is provided that the vehicle has a device according to the invention with a readout unit arranged in the vehicle for reading out vehicle parameters, the readout unit being connected to a data bus of the vehicle.

A method according to the invention comprises the following steps:

- reading out vehicle parameters using a reading unit,

- Transmitting the read vehicle parameters to a data processing unit using a wireless data connection, and

- Processing the transmitted vehicle parameters using the data processing unit.

[0016] The vehicle parameters are therefore processed directly after detection. If image and/or video material is recorded, its time-synchronous processing (in combination with the vehicle parameters) takes place directly after recording, which means that edited image and/or video material is available directly after the original image and/or video material has been recorded stands.

Further advantageous embodiments of the invention are defined in the dependent claims.

[0018] It can preferably be provided that the device comprises at least one camera for recording image and/or video material.

[0019] In combination with vehicle parameters such as speed, gas, brake, clutch pedal positions, steering wheel angle, etc., the driving behavior of a vehicle driver, in particular a student driver, can be analyzed using this image and/or video material. In particular, dangerous situations that have arisen during a driving lesson can be analyzed together with the learner driver without any delay after or during breaks after the driving lesson in order to train danger perception (in road traffic).

It is particularly advantageous if the at least one camera is part of the data processing unit.

Since the data processing unit does not have to be arranged in or on the vehicle, it is possible to record image and/or video material from a wide variety of viewing angles and also from outside the vehicle. The latter is an advantage in driving safety training, for example. During emergency braking exercises, for example, it can be analyzed whether the brake pedal was actually fully pressed.

[0022] It is also conceivable that an additional camera permanently installed in the vehicle is provided. This makes it possible to examine the situation from two different perspectives.

[0023] It can be provided that the data processing unit has at least one sensor unit for detecting acceleration, speed and/or position data.

[0024] In the event that the data processing unit is in the vehicle while driving, the acquisition of the acceleration and speed data enables a certain

more precise determination of the vehicle speed.

The position of the vehicle in a dangerous situation can be recorded via the position data. Through a large number of journeys, positions, i.e. places in road traffic, can be identified where dangerous situations occur excessively often.

[0026] Preferably, it can be provided that the data processing unit is designed to transfer the read vehicle parameters and/or the acquired acceleration and/or position data to the image and/or video material at a time when an image and/or video material is recorded, preferably automatically and time-synchronously. or assign video material.

[0027] The corresponding vehicle parameters and/or the recorded acceleration and/or position data are therefore available for an image and/or video material at the time of recording, which enables further processing.

[0028] Particularly preferably, it can be provided that the data processing unit is designed to produce image and/or video material processed from the image and/or video material and the associated vehicle parameters and/or the recorded acceleration and/or position data, in which the assigned vehicle parameters and/or acceleration and/or position data can be seen.

[0029] The actual analysis of driving behavior can then be carried out based on the processed image and/or video material.

It can advantageously be provided that the readout unit and/or the data processing unit are designed to be real-time capable.

[0031] It is therefore possible to provide edited image and/or video material immediately after image and/or video material has been recorded.

In one embodiment it can be provided that the data processing unit has a display device for displaying the vehicle parameters, the acceleration and/or position data, the image and/or video material and/or the processed image and/or video material, preferably wherein the display device is designed to be real-time capable.

This means that the edited image and/or video material can also be viewed directly. In addition, a driving instructor can display a variety of vehicle parameters in real time, which he can use to monitor and analyze the driving behavior of a student driver.

[0034] Particularly preferably, it can be provided that the data processing unit is designed as a smartphone or tablet.

[0035] This brings with it some advantages. On the one hand, smartphones and tablets are widespread and usually do not have to be purchased separately, which saves costs. It is sufficient if a corresponding app is loaded onto existing smartphones or tablets. On the other hand, smartphones or tablets have a variety of functionalities that can be used for a device, for example camera, GPS, acceleration sensors, etc.

Another big advantage is that smartphones or tablets are easy to transport and handle. A smartphone or tablet therefore provides a very flexible recording function that makes it possible to change the perspective quickly and with each recording.

[0037] For example, head movements or positions of a learner driver or images of the exterior and rear-view mirrors of the vehicle can be recorded. As already mentioned, it is also possible to record images and/or video material from a variety of perspectives from outside the vehicle.

[0038] Thus, (dangerous) situations can be comprehensively recorded, whereby an analysis of the situations in question can be carried out in a more meaningful and detailed manner.

[0039] In principle, however, it is also conceivable that the data processing device can be used as a laptop

top or PC trained.

According to an exemplary embodiment of the invention, the wireless connection is implemented via Bluetooth, preferably Bluetooth Low Energy.

This represents a simple option for a wireless data connection. Particularly when using Bluetooth Low Energy, the energy requirement of the readout unit can be further reduced.

[0042] It can be provided that the readout unit has a size between 10 cm x 5 cm x 3 cm (L x W x H) and 2.5 cm x 1.5 cm x 1 cm, preferably 5 cm x 3.5 cm x 1.5 cm.

This makes it possible to mount the readout unit in a vehicle in a simple and space-saving manner.

It can preferably be provided that the vehicle parameters read include at least one of the following parameters:

- Position of the accelerator, brake and/or clutch pedal

- Speed

- Gear engaged

- Engine speed

- Acceleration in the longitudinal and/or transverse direction

- Steering wheel angle

- Steering angle

- Wheel speeds of the individual wheels

[0045] Based on these parameters, an analysis of driving behavior is possible.

[0046] It is also conceivable that the data processing unit uses at least some of the above-mentioned parameters, preferably automatically, to carry out an evaluation of the parameters with regard to certain properties (for example fuel-saving driving style, anticipatory driving style, ability to perceive danger) and to carry out this evaluation, for example in the form of an evaluation. outputs. This evaluation then provides the driving instructor with additional help in analyzing driving behavior. The evaluation can also be communicated directly to a driver/learner driver.

[0047] With regard to a vehicle, it can be provided that the data bus is designed as a CAN bus or CAN FD bus.

[0048] It can also be provided that the data processing unit is designed separately from the vehicle.

[0049] This means that no space-consuming and energy-consuming data processing unit needs to be installed in a vehicle.

With regard to a method, provision can be made for image and/or video material to be recorded using a camera in an additional method step before the vehicle parameters are processed.

[0051] Preferably, it can be provided that read vehicle parameters and/or the acquired acceleration and/or position data are assigned to the image and/or video material, preferably automatically and time-synchronously, at a time when an image and/or video material is recorded.

[0052] The corresponding vehicle parameters for an image and/or video material are therefore available synchronously with the time of recording, which enables further processing. The actual analysis of driving behavior can then be carried out using the processed image and/or video material.

[0053] It can be provided that image and/or video material processed from the image and/or video material and the associated vehicle parameters and/or the acquired acceleration and/or position data, in which the associated vehicle parameters

and/or acceleration and/or position data can be seen.

[0054] The actual analysis of driving behavior can then be carried out based on the processed image and/or video material.

[0055] It has proven to be advantageous if the edited image and/or video material is created immediately after the image and/or video material was recorded.

[0056] It is therefore possible to provide edited image and/or video material immediately after recording image and/or video material.

[0057] According to one exemplary embodiment, it can be provided that faces of people and/or vehicle license plates in the image and/or video material are automatically made unrecognizable.

[0058] The image and/or video material is therefore available in compliance with data protection regulations without further post-processing.

[0059] It can also be provided that the processed vehicle parameters and/or the processed image and/or video material are transmitted from the data processing unit to a central storage location, preferably wirelessly.

This makes it possible to access vehicle parameters and/or processed image and/or video material from outside the data processing device. The vehicle parameters and/or the processed image and/or video material can therefore be used, for example, as part of a theory lesson in a driving school.

[0061] Preferably, it can be provided that vehicle parameters and/or processed image and/or video material are assigned to a corresponding position based on position data of a vehicle.

[0062] Particularly preferably, it can be provided that the positions with the assigned vehicle parameters and/or processed image and/or video material are entered on a map.

This means that positions can be identified on the map where dangerous situations occur more often. These positions can then be analyzed in detail and shown and taught, for example, in a theory class at a driving school.

Further details and advantages of the invention are explained in more detail below based on the description of the figures with reference to the drawings. Show in it:

1 is a schematic representation of a device,

2a shows processed image material,

29 shows a map with positions entered, and

2c shows a map with a current position with vehicle parameters.

1 shows a schematic representation of a device 1. A readout unit 2, which is connected to a data bus 101, is arranged in a vehicle 100. The data bus 101 is usually a CAN bus or CAN FD bus.

[0070] In the present exemplary embodiment, the data processing unit 3 is designed as a smartphone. The data processing unit 3 is in data connection with the readout unit 2 via a wireless data connection (indicated by the dashed line), for example Bluetooth Low Energy. The display of the smartphone acts here as a display device 3a.

The data processing unit 3 is connected to a central memory 5 via a likewise wireless data connection or can be connected at least temporarily. In this exemplary embodiment, the central storage 5 is a cloud storage. In principle, however, all suitable storage devices are conceivable. The wireless data connection in this case can be implemented, for example, via WLAN or a cellular network.

[0072] During operation, the reading unit 2 transmits the read vehicle parameters to the data processing unit 3. A user, for example a driving instructor, can have the read vehicle parameters displayed via the display device 3a of the data processing unit 3 and thus analyze and monitor a driving style.

[0073] In addition, the user can record image and/or video material via a camera of the data processing device 3. If this is the case, the vehicle parameters and/or acceleration, speed or position data of the data processing unit 3 are assigned to the image material at the time of recording (or to the video material from the time of recording at the corresponding time stamps). Subsequently, an edited image and/or video material is created in which the vehicle parameters and/or acceleration, speed or position data or a selection thereof can be seen. This preferably happens in real time.

Immediately after recording the image and/or video material, a user has access to edited image and/or video material in which the vehicle parameters and/or acceleration, speed or position data or a selection thereof can be seen/' are.

[0075] In the course of processing the image and/or video material, faces of people and/or vehicle license plates are also automatically made unrecognizable.

[0076] A processed image material 4 is shown in FIG. 2a. The following situation can be seen: The vehicle is moving towards a pedestrian crossing where a pedestrian is currently located.

[0077] At the top left, some vehicle parameters 4a can be seen, such as the speed and the degree of operation of the gas, clutch and brake pedals in percent. The current vehicle acceleration can also be seen in a Kamm circle 4b at the bottom right.

Using this processed image, a driving instructor can then, together with a learner driver, analyze the behavior of the learner driver in the situation depicted in the image.

[0079] Figure 2b shows a map 6 with positions 6a entered.

[0080] Each of the positions 6a is assigned vehicle parameters, acceleration and/or speed data and/or processed image and/or video material recorded at this position 6a.

Dangerous intersections or roads can be identified on the map based on accumulations of positions 6a.

[0082] If a position 6a is selected, the recorded image and/or video material is displayed with the associated data, as shown, for example, in FIG. 2a.

[0083] Figure 2c shows a map 6 with a current position 6a with vehicle parameters 4a. Figure 2c therefore corresponds to a live view as can be displayed via a display device 3a.

[0084] In Figure 2c, the vehicle parameters 4a shown are speed and the degree of actuation of the accelerator, clutch and brake pedals. Of course, other or additional vehicle parameters 4a can also be displayed.

REFERENCE SYMBOL LIST:

1 Device 2 Readout unit 3 Data processing unit 3a Display device 4 Processed image and/or video material 4a Vehicle parameters 4b Vehicle acceleration 5 Central storage location 6 Map 6a Position of image and/or video material 100 Vehicle 101 Data bus

Claims (24)

Expectations 1. Device (1) for detecting and analyzing the driving behavior of a vehicle driver, in particular a student driver, with a reading unit (2) which can be arranged in a vehicle (100) for reading out vehicle parameters, the reading unit (2) having a data bus (101). Vehicle (100) can be connected, characterized in that a data processing unit (3) separate from the readout unit (2) is provided for processing the vehicle parameters read out by the readout unit (2), the readout unit (2) and the data processing unit (3) being in wireless data connection with each other. 2. Device according to claim 1, wherein the device (1) comprises at least one camera for recording image and/or video material. 3. Device according to claim 2, wherein the at least one camera is part of the data processing unit (3). 4. Device according to one of claims 1 to 3, wherein the data processing unit (3) has at least one sensor unit for recording acceleration, speed and / or position data. 5. Device according to one of claims 2 to 4, wherein the data processing unit (3) is designed to read the vehicle parameters and / or the recorded acceleration and / or position data at a recording time of an image and / or video material, preferably automatically and time-synchronously , to assign the image and/or video material. 6. The device according to claim 5, wherein the data processing unit (3) is designed to produce image and/or video material (4) processed from the image and/or video material and the associated vehicle parameters and/or the recorded acceleration and/or position data. , in which the assigned vehicle parameters and/or acceleration and/or position data can be seen. 7. Device according to one of claims 1 to 6, wherein the readout unit (2) and / or the data processing unit (3) are designed to be real-time capable. 8. Device according to one of claims 1 to 7, wherein the data processing unit (3) has a display device (3a) for displaying the vehicle parameters, the acceleration and/or position data, the image and/or video material and/or the processed image and/or Has video material, preferably wherein the display device (3a) is designed to be real-time capable. 9. Device according to one of claims 1 to 8, wherein the data processing unit (3) is designed as a smartphone or tablet. 10. Device according to one of claims 1 to 9, wherein the wireless connection is implemented via Bluetooth, preferably Bluetooth Low Energy. 11. Device according to one of claims 1 to 10, wherein the readout unit (2) has a size between 10 cm x 5 cm x 3 cm (L x W x H) and 2.5 cm x 1.5 cm x 1 cm, preferably 5 cm x 3.5 cm x 1.5 cm. 12. Device according to one of claims 1 to 11, wherein the read vehicle parameters include at least one of the following parameters: - Position of the gas, brake and / or clutch pedal - Speed - Gear engaged - Engine speed - Acceleration in the longitudinal and / or transverse direction - Steering wheel angle - Steering angle - Wheel speeds of the individual wheels 13. Vehicle (100) with a device (1) for detecting and analyzing the driving behavior of a vehicle driver, in particular a student driver, according to one of claims 1 to 12, with a readout unit (2) arranged in the vehicle (100) for reading out vehicle parameters , wherein the readout unit (2) is connected to a data bus (101) of the vehicle (100). 14. Vehicle according to claim 13, wherein the data bus (101) is designed as a CAN bus or CAN FD bus. 15. Vehicle according to one of claims 13 or 14, wherein the data processing unit (3) is designed separately from the vehicle (100). 16. A method for detecting and analyzing the driving behavior of a vehicle driver, in particular a learner driver, with a device (1) according to one of claims 1 to 12, comprising the following steps: - Reading out vehicle parameters using a reading unit (2), - Transmitting the read vehicle parameters to a data processing unit (3) by means of a wireless data connection, and - Processing the transmitted vehicle parameters using the data processing unit (3). 17. The method according to claim 16, wherein in an additional method step before processing the vehicle parameters, image and / or video material is recorded using a camera. 18. The method according to claim 17, wherein the read vehicle parameters and / or the recorded acceleration and / or position data are assigned to the image and / or video material at a time when an image and / or video material is recorded, preferably automatically and time-synchronously. 19. The method according to claim 18, wherein image and/or video material (4) processed from the image and/or video material and the associated vehicle parameters and/or the recorded acceleration and/or position data, in which the associated vehicle parameters and/or Acceleration and/or position data can be seen. 20. The method according to claim 19, wherein the processed image and/or video material (4) is created immediately after a recording time of the image and/or video material. 21. The method according to any one of claims 17 to 20, wherein faces of people and/or vehicle license plates in the image and/or video material are automatically made unrecognizable. 22. The method according to any one of claims 16 to 21, wherein the processed vehicle parameters and/or the processed image and/or video material (4) are transmitted from the data processing unit (3) to a central storage location (5), preferably wirelessly. 23. The method according to any one of claims 16 to 22, wherein vehicle parameters and / or processed image and / or video material are assigned to a corresponding position (6a) based on position data of a vehicle. 24. The method according to claim 23, wherein the positions (6a) with the assigned vehicle parameters and / or processed image and / or video material are entered in a map (6). This includes 3 sheets of drawings