WO2018189037A1

WO2018189037A1 - Navigational aid for controlling a rowboat

Info

Publication number: WO2018189037A1
Application number: PCT/EP2018/058794
Authority: WO
Inventors: Kai VON PETERSDORFF-CAMPEN
Original assignee: Von Petersdorff Campen Kai
Priority date: 2017-04-11
Filing date: 2018-04-05
Publication date: 2018-10-18
Also published as: DE102017003493A1

Abstract

The invention relates to a navigational aid for controlling rowboats. The navigational aid comprises a sensor unit which ascertains spatial information on objects in the surroundings of the boat and the speed vectors thereof relative to the boat and analyzes said information with respect to the risk of the objects colliding with the boat. The sensor unit communicates with a warning display unit comprising at least one tactile pulse emitter which at least indirectly contacts a body region of a navigating boat occupant such that the navigating boat occupant can haptically perceive the tactile signals.

Description

Patentanmeldung Navigationshüfe for controlling a rowing boat

description

The invention relates in the first place to a navigation port for rowing boats, which are not controlled by a helmsman but by a rower. The navigation aid according to the invention is also to support the control of a

Rowing boats controlled by a non-rowing helmsman.

The rower sits with his back in the direction of travel. Therefore, he can not see whether there is an object in the waterway lying in front of the boat, as seen in the direction of travel, and the boat is in danger of colliding with this object. With rowing boats without helmsman the danger of collisions - and thus the danger of boat damages and bodily injuries - is therefore particularly high. A helmsman sitting in the boat on the stern, the rowers in front of him adjust the view of objects in the narrower lane of the boat. Such objects can be a permanent obstacle in the lane of the boat (buoy, boat dock, bridge pier, etc.) or move into it (especially watercraft). In a winding course of the water body and the shore can be such an object or obstacle.

In rowing boats without a helmsman, the control of the boat by means of a control device that operates a navigating rower with the foot, or - especially in rowing boats with only one rower - by so-called. Plating. Here, the transmitted by the rower on the rudder blade into the water pulling power is increased on a boat side, so that the hull dodges in the other direction, thus changing the direction of travel. In order to avoid collisions, at least the navigating rower must turn around on both sides during the rudder movement. However, it is not desirable for a rower to turn around during the rudder movement. The movements of the rowing are complex and technically demanding. They require the rower's full attention at all times. In crew boats, the concentration of the oarsmen is in addition to the synchronization of the movement behavior within the whole man shaft. In the phase in which the navigating oarsman turns around, his attention is no longer unconditionally the finely tuned processes in the boat. The changed by reversing sitting posture affects an optimal transfer of the rudder power into the water and is at the expense of the synchronous movements and the balance of the boat. In addition, it is not orthopedic to row with a twisted spine due to turning. Unfavorable for the balance of the boat is also when the helmsman sitting in the rear of the boat leans laterally out of the boat to better view the road.

The avoidance of a collision of the rowing boat with an obstacle must be permanently ensured. As a result, the navigating rower must actively monitor and as a result turn around, or the helmsman will lean out of the boat even if there is no obstacle in the lane of the boat. Because of the above-described disadvantages of turning over and leaning out there is a natural tendency of the navigating boat occupants to look around as rarely and then only for the shortest possible moment or lean out of the boat. If the intervals between the individual observations of the roadway are too long, it may not be possible to respond in good time to an obstacle that is now standing in the way of the boat or moving into it. Defective vision and restricted mobility also increase the risk of an obstacle not being recognized or being detected in good time, especially in older rowers.

In the prior art, a rearview mirror has been used, which is fastened to the head of the navigating rower, for example on the bracket of a pair of spectacles. This type of navigation aid has not prevailed. The rearview mirror obstructs the field of vision, in particular even when the oarsman turns around to more accurately identify an obstacle previously seen in the rearview mirror from a navigation decision. The rearview mirror permanently binds the visual attention of the navigating rower and thus permanently affects its focus on the processes in the boat. Even unfavorable conditions such as backlighting, On the water, mist or spray or rain water on the mirror can severely affect the visibility of the rearview mirror.

To avoid the disadvantages of a rearview mirror, for example, US Pat. No. 7,207,853 B2 discloses a navigation aid for rowing boats, in which a camera attached to the hull transmits images of the water that is passing in front of the boat to a screen. The screen is located in the work area and there in the field of view of the navigating rower. Also, this technology has the disadvantage of permanently binding the visual attention of the navigating rower. Another disadvantage is that the permanent view of the oarsman on the screen with a rowing technically unwanted lowering of the head is accompanied. The arrangement of a screen in the work area of the rower also has the disadvantage that the screen is in the execution of the rudder movement in the way. Another disadvantage is that unfavorable lighting conditions, such as Reflections on the screen in the sun or spray and rain water on the display impair the reliability of such navigation aids.

With the US 7,207,853 B2 has been proposed to equip the screen additionally with a signal generator that a visual, audible or physical Warnsigna! generated when the collision of the boat with a lane marking or other object threatens. It is not disclosed how the detection of a risk of collision proceeds technically in detail. In crew boats, acoustically noticeable warning signals have the disadvantage that they are also perceived by the rowers who are not involved in the steering of the boat, so that these rowers disturbed not only in their focus on the operations in the boat, but also to uncoordinated control maneuvers Overshadowing or being provoked to make your own turn. It also lacks a teaching on how a physical warning signal is transmitted to the body of the rower. In addition, it is not disclosed whether and, if so, how specific information about the obstacle is physically communicated. From WO 2013/181631 A2 a configured as a method and device system for improving the safety of water and land vehicles by detecting collision hazards is known. For object recognition, the use of a video camera, Doppler radar or binocular camera is proposed. The collected data is analyzed in a camera unit. It determines if the boat is on a collision path with a detected object. This information is transmitted wirelessly to a display unit, which is located in the work area and field of view of the rower. The display unit is able to indicate the distance at which obstacles are in the roadway of the boat. The screen of the display unit may additionally be configured to display a visually perceptible warning when there is a risk of a collision. The warning message may also consist of an audible warning or an audible instruction. It provides technical details for the detection, transmission and visualization of collision hazards. However, the above-mentioned disadvantages, which are associated with the arrangement of a screen in the work area of the rower and with the permanent visual, possibly supplemented by an acoustic warning screen monitoring, but also exist in this system. In addition, it is not disclosed in what way acoustic instructions arise from the data analyzed in the camera unit.

The invention has for its object to provide a novel navigation aid for controlling rowing boats available, with the disadvantages identified in the prior art are largely avoided. In particular, the attention of the navigating rower is no longer bound by a permanent visual observation of the lane of the boat. The novel navigation aid is to objects, which could run out of the risk of collision with the boat permanently, reliably and predictively even in adverse visibility conditions and then report to the navigating boat occupants, if it to avoid a collision with the boat a decision on Evasion maneuver required. Decisions about an evasive maneuver should be made on time, with as little mental effort as possible, and essentially without revolving movements of the navigating oarsman or without the helmsman leaning out. The warning of an obstacle should be able to perceive only the navigating boat occupants.

To solve this task, a navigation aid with the features of the main claim is proposed.

A trained according to the invention navigation aid consists of a sensor unit with at least one sensor. The sensor is designed as an optical distance and speedometer. For example, the sensor unit sensor uses LiDAR technology (Light Detection and Ranging) to determine the distance to an object and the speed of the object. The sensor or the sensor unit communicates wirelessly with a warning display unit. The advantage of LiDAR sensors is that they can be used even under limited viewing conditions, such as in backlight or fog, can be more reliably identified than the sensors previously used in navigational aids for rowing boats, e.g. 2D cameras. A significant disadvantage of Doppler radar sensors is that they - unlike LiDAR sensors - u.U. Also detect water as an obstacle, which is problematic especially in waves. Unlike Doppler radar sensors, LiDAR sensors can also detect objects regardless of their material, e.g. even if they - such as dinghies, boardwalks or flotsam - not or only to small proportions of metallic material.

The sensor unit according to the invention is fixedly or detachably arranged on the boat, preferably in a receiving device in the region of the boat top. The sensor acquires spatial information about objects in the vicinity of the boat and determines their velocity vectors relative to the boat. The sensor unit comprises a computer unit with which this information can be analyzed with regard to the risk of a collision of objects and the boat. It will be Based on the position and velocity vectors of the objects in relation to the boat, motion paths were predicted and these predictions were used to decide whether or not the objects would collide with the boat while maintaining the direction of travel and speed of the boat. If a collision hazard has been determined, the information about this together with other object-specific information, in particular position of the obstacle and the time remaining without collision maneuver until the collision, translated into a signal that wirelessly - eg by radio - to the warning display- Unit is transmitted.

The warning display unit according to the invention comprises at least one tactile pulse generator, which is in contact with at least one body region of the navigating boat occupant. In a preferred embodiment, the tactile pulse generator is worn in direct skin contact on the body. The signals transmitted by the sensor unit are transmitted perceptibly via the tactile pulse transmitter to the body of the navigating boat occupant, for example by vibration signals. In particular for the navigating rower, the advantage of such a warning display is that, unlike a visual warning display, it does not require him to actively observe, but only to demand reactive attention. The navigating oarsman can thus fully concentrate on his rowing and boat operations by the time he is notified of a collision course tactile impulse signal, ie the need for an evasive maneuver. As a result, in the case of objects in the detection range of the sensor for which the sensor unit does not detect a collision with the boat, the decision about the necessity of an evasive maneuver is taken from it. Another advantage of the invention lies in the directly physical information transfer, which reduces the effort for the mental evaluation of a warning signal and thereby shortened in particular the reaction time of the navigating oarsman, within which the decision must be made about an evasive maneuver and implemented by controlling or coating. For example, the oarsman can immediately move with the tactile pulse signal in a lateral area of the body. be instructed to move the foot control to this page or overlay it on this page. In the case of visual or audible warnings, on the other hand, prior to the execution of the avoidance maneuver, it would first be necessary to carry out a mental analysis of the indicated position of the obstacle and a subsequent selection and decision as to whether and with what measures the analysis result should be physically converted into a control movement. By contrast, with the navigation aid perceptible according to the invention, the navigating rower is, as it were, made possible to intuitively control the boat from the rudder movement.

The advantage of the invention over an acoustically perceptible warning display, possibly handling instructions, is that the information transmitted via a tactile signal transmitter remains hidden to the other rowers in a crew boat, so that they are not distracted or irritated by their attention to the processes in the boat be unnecessarily impaired.

Since a sensor operating preferably according to the LiDAR technology is able to report also such obstacles which in unfavorable visibility conditions, such as e.g. Backlight or fog, are not sufficiently well visible to the naked eye, can be significantly reduced with a navigation aid according to the invention, the risk of collision even under such conditions.

Advantageous embodiments are described below and in the subclaims.

Embodiments of the invention are illustrated in the following drawings

FIG. 1: partial view of a rowboat with rower, equipped with the navigation aid according to the invention, FIG. 2: Schematic representation of the navigation aid according to the invention (sensor unit and warning display unit),

FIG. 3: representation of a warning unit (torso belt),

FIG. 4: representation of the work area of the rower with a warning unit on the stretcher board,

FIG. 5: Schematic representation of different recognition and warning scenarios with objects in and outside the coverage area,

Figure 6: Schematic representation of a detection scenario with an object on a collision course and

Figure 7: Schematic representation of a warning scenario with an object on a collision course.

Fig. 1 shows the partial view of a boat 1 with a navigating rower 18 in the rowing motion. The boat 1 and the rower 18 are provided with a navigation aid comprising a sensor unit 2 and at least one warning display unit (not numbered). The sensor unit 2 is fastened in a holding device in the region of the boat tip, preferably in a start number Haiterung mounted there. The sensor unit 2 preferably communicates wirelessly (not shown in Fig. 1), e.g. over radio, with at least one warning display unit.

According to the invention, the warning indicator is in at least indirect contact with at least one body region of the navigating rower 18 or the helmsman. 1 shows exemplary embodiments of an installation of the warning display unit on the body of the rower 18. In a first embodiment, the warning display unit is housed in a torso belt 19, which is preferably worn in the chest area and spans the entire upper body of the rower 18. In another embodiment, the warning indicator unit is housed in a cuff 20,21, which the rower 18 carries on one of the extremities, for example in one Arm cuff 20 and / or in a leg cuff 21. in another embodiment, the rower 18 carries two cuffs 20,21, each with a warning indicator unit on a right and a left limb, eg arm cuffs 20 on both arms or Leg cuffs 21 on both legs.

FIG. 2 shows the components of the sensor unit 2 and warning display unit in a functional diagram of the navigation aid according to the invention. The sensor unit 2 comprises a fastening device for its simple assembly and disassembly on the boat 1, an energy depot 17, such as a battery, for the operation of the electrical components 15 (arithmetic unit, radio module) and operating elements, eg. B. in the sensor unit 2 are also at least one optical distance and speed sensor, such as a LiDAR sensor, for determining spatial information about objects 8.9.10.11 in the environment of Boats 1 and their speed vectors relative to the boat 1, as well as a radio module for wireless communication with the warning display unit housed. A computing unit in the sensor unit 2 controls all electronic processes in the navigation aid according to the invention, in particular the processing of the sensor information and - via the radio module - the activation of the at least one warning display unit. In addition, an acoustic and / or optical signal generator can be provided with which, for example, the rower 18 can be warned if a restriction of the functions or the failure of Navigationshiife threatens or has already occurred, in particular with complete discharge of the batteries or the interruption of the radio link between the sensor unit and the warning display unit or at least one of the warning units when they are applied, for example, in two arm cuffs 20 on the body of the rower 18. The sensor unit 2 is preferably - as shown schematically by a frame - housed in a housing which protects the sensor and the other components 15,17 against moisture, in particular against the ingress of spray and wave water. In a preferred embodiment-not shown in FIG. 2-a GPS module is additionally used. As a result, the navigation aid according to the invention can be supplemented by the determination of the global boot position. It can be rtion warned with a stored on the computer unit database more reliable before a collision with obstacles by comparing the global ^Bootspos' whose positions are stored in the database. With the GPS module, it is also possible to warn of virtual obstacles instead of real obstacles, which result from the limitations of a preprogrammed roadway of the boat.

The warning display unit shown schematically in Fig. 2 comprises a support 13 for the listed electronic components 15,17 on which they are stored safely and preferably protected from moisture, e.g. by the formation of the carrier 13 as a - schematically represented by a frame - wrapping the warning indicator unit made of waterproof material. In the warning display unit is an energy depot 7, e.g. a battery, for operating the electrical components 15 and controls, in particular for switching on and off the warning display unit and for radio-coupling with the sensor unit 2 housed. Furthermore, a radio module for wireless communication with the sensor unit 2, a tactile pulse generator 16 and a computing unit for processing the received radio signals and for driving the tactile pulse generator 16 are provided. The tactile pulse generator 16 may be divided into segments, for example, segments 12a. Over a e.g. in time sequence differentiating control and of two or more segments 12a of the tactile pulse generator 16 can be transmitted directional information about the obstacle. The tactile pulse generator 16 or its segments 12a can be configured as electric vibration motors.

In Fig. 3, an embodiment of the warning display unit is shown in a torso belt 19. This embodiment comprises a carrier 13 on which the tactile pulse generator 16 stores the energy depot 17, for example a battery, components 15 (arithmetic unit, radio microphone). dul) and controls for switching on and off the warning display unit are stored (not shown in detail). The carrier 13 may be an elastic band, which is applied by means of a closure 14 adjustable in size on the torso. In a preferred embodiment, an operating element is integrated in the closure 14, wherein the warning display unit with the closing of the shutter 14 on and off with the opening. In a further embodiment, the tactile pulse generator 16 and / or at least one of the electronic components 15, 17 may be housed in a water-resistant and / or flexible housing. In Fig. 3, the tactile pulse generator 16 and the electronic components 15,17 are mounted on the body side facing away from the carrier 13. Alternatively, the tactile pulse generator 16 may also be located on the body-facing side of the carrier 13. This embodiment of the warning indicator unit is preferably applied to the torso of the rower 18 so that the tactile pulser 16 is centered horizontally on the rudder 18 back. A set for this arrangement Wamanzeige unit in torso strap 19 can be applied to the helmsman who is facing in the direction of travel in the boat without changing this setting so to the torso that the tactile pulser 16 centered horizontally on the ventral Side of the torso. In the embodiment shown, the tactile pulse generator 16 is divided into eight segments 12a, which can be controlled separately by the arithmetic unit for generating a tactile signal. Activated segments 12a are shown as segments 5a, 5b. The segments 12a are either dimensioned so large or distributed with such a large distance on the carrier 13, that the information that is conveyed with a tactile signal, for example via the segment 5a, haptically distinguishable from the information provided with a tactile signal of adjacent segment 5b is mediated. In this way, the distinctness is ensured both in the activation of one of the adjacent segments 5a, 5b and in an activation of both adjacent segments 5a, 5b. FIG. 4 shows a further embodiment of the warning display unit according to the invention as a warning display unit 23 in the working area of the navigating rower 18 with the rolling seat 25 and the stiffening board 22 for supporting the feet of the rower 18. The warning display unit 23 is mounted in the region of the Stemmbretts 22. On the Stemmbrett 22, the areas are marked in which the feet of the rower 18 are resting on the stretcher board 22. Of the warning display unit 23, only the segments 23a, 23b of the tactile pulse generator 16 are shown. The warning display unit 23 is designed so that in each case at least one segment 23a, 23b of the tactile pulse generator 16 is in the region of the position of one foot and the tactual signal is felt upon activation of one of the segments 23a, 23b only on the foot, the it is associated. In Fig. 4, this is segment 23b associated with the left foot. The advantage of this embodiment is that the warning display unit 23 does not have to be worn on the body while maintaining the advantages according to the invention, which can be perceived by a navigating rower subjectively as disturbing, for example. If the sensor unit 2, for example, in a fixed installation on the hull, for use in a particular boat 1 is set individually, the warning indicator 23 also allows a permanently preset vote of the warning display unit 23 with the sensor unit 2. In one Another embodiment of the warning display unit 23, the Stemmbrett 22 shown in FIG. 4 can be used as a footrest for the helmsman.

In another embodiment, at least one warning display unit is arranged as a warning display unit 26 in the region of the rudder handle, preferably integrated into the rudder handle (not shown in the figures). For example, for straps (one rudder per oarsman) an arrangement of the warning indicator unit 26 may be provided such that one segment 12a of the tactile pulser 16 is located in a region of the rudder grip in which one hand of the rower 18 is engaged. In a preferred embodiment for skulls (a rudder in each rower's hand), a warning indicator unit 26a and 26b are respectively disposed in the grip of each skull. A segment 12a of the tactile pulse generator 16 of the warning display unit 26 is in at least least indirect contact with the inner surface of the rudder handle comprehensive hand. An additional advantage of a rudder grip-side arrangement of the warning indicator 28 is that the warning indicator unit does not have to be carried on the body of the rower 18. In addition, belts / skulls are usually set individually for use in a particular boat 1. In this respect, another advantage of the rudder grip-side arrangement of the warning display unit 26 is that the navigation aid according to the invention can be included in such an individual assignment of belt or scull in boats, in which the sensor unit 2 preset individually on the boat, especially permanently installed on the hull.

FIG. 5 summarizes various detection and warning scenarios with objects 8, 9, 10, 11 in and outside the detection area 6 of the sensor of the sensor unit 2 in front of the boat 1. In the arithmetic unit of the sensor unit 2, a defined protection area 3 for the boat 1 is stored with a segment 4 segmented into digitally defined segments 12. An object 7 outside the detection area 6 of the sensor can not be detected. The sensor detects the position of the objects 8, 9 lying in the detection area 6 and their velocity vectors v ₈ , vg relative to the boat 1. Assuming constant speeds and directions of movement of the objects 8, 9 relative to the boat 1, the position and the velocity vectors v _{8 are used >} v ₉ motion paths of the objects 8,9 relative to the boat 1 predicted, which are shown with dashed lines. If such a path - as in the case of object 9 - encounters the protection zone 3, a danger of collision is determined at a certain point in time. A segment 5 of the segmented front 4 is determined as the intersection of the predicted path of object 9 with the segmented front 4 of the protection zone 3. Without an evasive maneuver, the object 9 would penetrate through the segment 5 in the protective area of the boat 1, as far as it retains its direction of movement relative to the boat 1. Based on the position of the segment 5 in the segmented front 4 a meaningful maneuvering decision can be made. The number of digitally defined segments 12 of the segmented front 4 is Therefore, it is designed to correspond to the number of segments 12a of the tactile pulser 16 of the warning display unit. In the event of a collision, the segment 5 a of the tactile pulse generator 16 corresponding to the segment 5 is activated. If the movement path of an object - as with object 8 - does not intersect with the protection zone 3, no risk of collision is detected. An unnecessary warning of, for example, sufficiently fast crossing or moving ahead with at least the same speed objects is avoided. The navigating boat occupant 18 is not warned and relieved of the decision to carry out an evasive maneuver.

Fig. 6 shows, in the manner of the scheme of Fig. 5, an object 10 on a collision course. The sensor unit 2 determines the distance and the approaching speed of the object 0 to the boat 1 and calculates therefrom the time collision until the possible collision. In the sensor unit 2, a time t _{krifech is} set, which indicates the time until a possible collision, at the beginning of the Wamanzeige- unit is to be activated. The time collision of object 10 exceeds the time t _critical . The segment 12a of the tactile pulse generator 16, which corresponds to the segment 12 of the segmented front 4 cut by the path of movement of the object 10, is therefore not yet activated. A premature collision warning and a corresponding premature decision on a possibly unnecessary evasive maneuvers are avoided. In FIG. 7, on the other hand, the time feiston of object 11 falls short of time. The segment 5a of the tactile pulse generator 16, which corresponds to the segment 5 cut by the path of movement of object 11, is activated.

In a simple embodiment of the navigation aids according to the invention, only one segment 5a, 5b of the tactile pulse generator 16 is activated in the event of a risk of collision. In an advanced embodiment, collision hazard information may be conveyed based on modulations of the intensity and duration of the tactile pulse signals generated in at least one of the activated segments 5a, 5b. Reference numerals! Iste

1 boat

2 sensor unit

3 Defined protection range

4 Segmented front of the protection area

5 Segmented segment cut by object path 4 5a, 5b Segment of tactile pulser (activated)

6 Detection range of the sensor

7 Object outside the detection area

8 object within the detection area (not on collision course)

9 object (on collision course)

10 Object within the detection range (on collision course, time t _co- mi- nution to collision less than critical time to activate a segment of the segmented front)

1 1 object within the detection area (on a collision course, time t _Ko i- Sísion until the collision is greater than critical time tkntisch to activate a segment of the segmented front

12 segmented front segment (not cut by object path 12a segment of tactile pulser (not activated)

12b Segment of the tactile pulse generator (activated)

13 Carrier for electronic components (torso belt)

14 closure

15 components (arithmetic unit, battery, operating elements)

16 tactile pulse generator

17 energy depot

18 navigating boat occupants (as rowers)

19 warning display unit (torso belt)

20 warning display unit (arm cuff)

21 warning display unit (leg cuff)

22 stemming board

23 tactile pulse generator on the stalk board (not shown)

23a segment of the tactile pulse generator (not activated)

23b segment of the tactile pulse generator (activated)

24 not forgiven

25 roll seat

26 warning display unit (rudder handle)

26a, 26b Warning indicator unit (rudder grip / skulls)

Claims

claims

1. Navigation aid for controlling rowing boats, comprising a sensor unit (2) with at least one sensor, the spatial information about objects (8,9,10,11) in the vicinity of the boat (1) and their velocity vectors (vs. vg v-io.vn ₎ relative to the boat (1) and analyzes this information with regard to the risk of collision of objects with the boat (1), wherein the sensor unit (2) is arranged on the hull and via a wireless Connection with at least one warning display unit communicates and activates as soon as certain analysis values are reached, and wherein the warning display unit comprises at least one tactile pulser (16) in at least one body region of at least one navigating boat occupant (18) indirect contact means that tactile signals emanating from the tactile pulse generator (16) can be perceived haptically by the navigating boat occupant (18).

2. navigation aid according to claim 1, characterized in that the sensor of the sensor unit (2) is designed as an optical distance and speedometer, preferably according to the LiDAR technology.

3. navigation aid according to one of claims 1 and 2, characterized in that the sensor unit (2) in a protected against the ingress of spray, especially moisture-proof housing formed on the hull, preferably in the area of the boat top in the receiving device for the start number, is fastened.

4. Navigation aid according to one of claims 1 to 3, characterized in that the tactile pulse generator (16) of the warning display unit comprises at least one separately controllable segment (12a) for the transmission of the tactile signal.

5. navigation aid according to one of claims 1 to 3, characterized in that the tactile pulse generator (16) is divided into at least two independently activatable segments (5a, 5b, 12a, 23a, 23b).

6. navigation aid according to one of claims 1 to 5, characterized in that the tactile pulse generator (16) and / or the segments (5a, 5b, 12a, 23a.23b) are designed as vibration motors.

7. navigation aid according to claim 5 or claim 6, characterized in that the segments (5a, 5b, 12a, 23a, 23b) of the tactile pulse generator (16) are dimensioned or spaced from each other that the pulse signals of the individual segments (5a, 5b , 12a, 23a, 23b) are haptically different from each other bar.

8. navigation aid according to one of claims 1 to 7, characterized in that the warning indicator unit by means of a Torso-belt (19) is designed for application to the body of a navigating boat occupant (18).

9. navigation aid according to one of claims 1 to 7, characterized in that the warning display unit as a cuff (20,21), in particular as an arm cuff (20) or leg cuff (21) is formed, for application at least one extremity, preferably on two extremities of a navigating boat occupant (18).

10. navigation aid according to one of claims 1 to 7, characterized in that the warning display unit in the region of the Stemmbretts (22) is arranged and at least one segment (23a, 23b) of the pulse generator (16) at least one foot of the navigating boat occupants ( 18) tactile signals are transmitted.

11. Navigation aid according to one of claims 1 to 7, characterized in that at least one warning display unit as a warning display unit

(26,26a, 26b) is arranged on or in the rudder handle and tactile signals are transmitted via at least one segment (5a, 5b, 12a) of the pulse generator (16) at least one hand of the navigating rower (18).

12. Navigation aid according to one of claims 8 to 10, characterized in that the warning display unit is splash-proof, in particular moisture-proof, is formed.

13. navigation aid according to one of claims 1 to 12, characterized in that the sensor unit (2) from the determined data motion paths for in the 'detection area (6) of the sensor lying objects (8,9,10,11) predicts and determines whether the movement paths of the objects (8,9,10,11) intersect with a digitally defined protection area (3) around the boat (1).

14. Navigation aid according to claim 13, characterized in that the sensor unit (2) for objects (9,10,11), which are on a collision course to the boat (1), the time collision calculated until the possible collision and falls below a defined warning time tkhtisch the warning display unit activated.

15. Navigation aid according to one of claims 1 to 14, characterized in that the sensor unit (2) in at least one of the activated segments (5a, 5b, 23b) of the tactile pulse generator (16) of the warning display unit activates tactile signals, the depending on the information to be transmitted about the prediction of a collision in their intensity and duration are modulated differently.

16. navigation aid according to one of claims 1 to 15, characterized in that the sensor unit (2) is equipped with an acoustically and / or visually perceptible signal generator, the failure and / or a occurred, preferably an imminent restriction of the functions of Navigation aid displays.

17. Navigation aid according to claim 16, characterized in that the acoustic signal transmitter displays different malfunction scenarios via different signals.