Method and device for generating, merging and updating of destination tracking data
DC CAFCFirst Claim
1. A method for generating and updating data for use in a destination tracking system of at least one mobile unit comprising:
- generating and storing traveled distance data in at least one storage device provided in said mobile unit at least at predetermined time intervals, wherein the traveled distance data represent traveled sections by at least a series of nodes Pi and to each node Pi geographical coordinates xi and yi are assigned;
generating and storing section data in the storage device provided in the mobile unit, said section data being generated by selecting, from the traveled distance data, nodes Pj and Pk, which define contiguous sections PjPk, to which at least their geographical starting point and end point are assigned; and
generating a section data file from the section data and storing the section data file in the storage device provided in the mobile unit, said section data file being continuously supplemented and/or updated with section data newly generated by the mobile unit.
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Abstract
A method and device for generating, merging and updating data for use in a destination tracking system which comprises, among others, the following steps: Generation of data by mobile units (vehicles) to model reality concerning route(s) and traffic, and storing this data for further use. A highly up-to-date and extremely reliable database is built-up in a simple and efficient way by merging data from many units. This database makes it possible to answer a number of complex problems, for example, about the passable route network and realizable travel times. On input of an origin and a destination node together with the intended travel time, destination tracking data is calculated from the stored data. Since the origin-destination relationships of the motions carried out by the mobile units in dependency of all conceivable parameters are known, the destination tracking recommendations for each individual participant can be given such that the sum of the times of movement of all participants is minimized.
401 Citations
53 Claims
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1. A method for generating and updating data for use in a destination tracking system of at least one mobile unit comprising:
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generating and storing traveled distance data in at least one storage device provided in said mobile unit at least at predetermined time intervals, wherein the traveled distance data represent traveled sections by at least a series of nodes Pi and to each node Pi geographical coordinates xi and yi are assigned;
generating and storing section data in the storage device provided in the mobile unit, said section data being generated by selecting, from the traveled distance data, nodes Pj and Pk, which define contiguous sections PjPk, to which at least their geographical starting point and end point are assigned; and
generating a section data file from the section data and storing the section data file in the storage device provided in the mobile unit, said section data file being continuously supplemented and/or updated with section data newly generated by the mobile unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
requesting a desired trip from a computer with knowledge of a section file;
specifying said desired trip by inputting a starting point, a destination point, a starting or target time, and any special requirements;
calculating via said computer a route composed of individual sections using the section file and minimizing the duration of motion or the route length taking into account any special requirements; and
displaying the relevant data derived from the route determined as described above in a display unit and/or outputting said data acoustically.
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37. The method in accordance with claim 36, further comprising the step of using, when the computer calculates a route, the most recent section data stored in the short term section file together with the corresponding section data from the section file which does not deviate typically from the corresponding recent section data.
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38. A device for carrying out the method according to claim 1, for use in at least one mobile unit comprising:
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a location sensor to determine the current geographical position of the mobile unit;
a milometer to generate a route signal corresponding to traveled distance;
an input unit;
a display unit; and
an electronic control device containing a microprocessor, a ROM and a RAM, said control device comprising;
a motion storage unit;
a section storage unit; and
a section data file storage unit;
said location sensor, said milometer, said input unit and said electronic control device being electrically connected to carry out said method.
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39. The device according to claim 38 further comprising a short term section storage unit.
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40. The device according to claim 39, further comprising a direction sensor provided to determine the current geographical direction of the mobile unit.
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41. The device according to claim 38, further comprising a clock provided to generate time signals.
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42. The device according to claim 38, wherein the input unit comprises a read unit to read an address information as a destination point from a data carrier.
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43. The device according to claim 42, wherein said read unit is a facility for reading bar-codes.
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44. The device according to claim 38, further comprising a transmission device built into the mobile unit for transmitting collected data and a central computer installed in a remote location from the mobile unit, said computer receiving and evaluating the data transmitted by the transmission device of the mobile unit and thereafter storing the evaluated data.
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45. The device according to claim 44, wherein a receiving unit of the transmission device receives data from a central computer and an output device of the mobile unit outputs the data received from a central computer.
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46. The device according to claim 44, wherein the transmission device contains an interface.
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47. The device according to claim 44, wherein the transmission device contains a radio device.
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48. The device according to claim 38, further comprising a recording device for recording the time of starting and ending of a motion and/or the day of the week on which the mobile unit is moved.
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49. The device according to claim 38, further comprising a revolution detector for detecting the revolutions of a motor when said device is installed in a motor driven mobile unit.
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50. The device according to claim 38, further comprising a fuel level detector for detecting the fuel level of a motor driven vehicle when said device is installed in said vehicle.
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51. The device according to claim 38, wherein said direction sensor is a gyrometer and/or a compass.
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52. The device according to claim 38, further comprising a Global Positioning System receiver for detecting a current absolute position of the mobile unit.
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53. The device according to claim 43, wherein a central computer is part of a stationary navigational unit which in addition to the central computer contains a transmission device to receive and send data from and to a mobile unit and contains at least one storage unit.
Specification