Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1997-10-13
1999-08-10
Elms, Richard T.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
340441, 701 35, B60L 100
Patent
active
059363150
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a driving data recording device or a trip recorder for a motor vehicle and includes a device for collecting time- and/or speed-dependent driving data, which is mounted directly on or in the drive gear housing shell.
2. Description of the Prior Art
Such apparatuses, generally called tachographs, with electronic data recording are disclosed in European Patents EP-O 188 429-B1 and EP-O 191 413 B1. On the other hand, such tachographs are modified further for recording the driving data directly on the speed-time chart.
Tachographs are primarily used, because of existing legal requirements in trucks and serve for storing data, which characterize the transport performance in a way that enables a simple and reliable reconstruction of the driving or travel course by drivers, vehicle owners and authorized monitoring bodies.
These apparatuses permitted to eliminate log books and, because of this, are required to record, to the same extent, vehicle data for times of a day, i.e., speeds, covered distance, stationary periods and, if necessary, other vehicle data.
Through the tachographs with time-speed charts proved themselves in practice and despite of the use of electronic storage cards and storage cassettes as driving data memory, because of a particular competition situation in the transportation industry, attempts to manipulate the tachographs or their data carriers in a fraudulent way should be taken into account. Securing of these apparatuses against obvious manipulative attempts is possible with additional expenses. The manufacturing and mounting of such apparatuses are unavoidably accompanied by additional costs, and an absolute security against manipulation can be achieved only with prohibitively high expenses.
The manipulation problems such as, e.g., producing the obligation of the driver, written data carriers, such as trip documents one or several days before, are discussed in detail in the already mentioned prior art and, for the sake of shortening the description, need not be repeated here again.
Accordingly, an object of the invention is a trip recorder having a substantially improved security against deliberate attempts to manipulate the data collection or to alter them and which can be produced substantially more economically than the known tachographs.
SUMMARY OF THE INVENTION
The present invention solves the posed problem with regard to the improvement of the costs-benefit ratio of the inventive apparatus in a substantial way, by providing a pure electronic, substantially digitally operating trip recorder which has a miniaturized design, can be mounted directly on or in a housing shell of a motor vehicle drive gear, and is equipped with a temperature-insensitive processor and memory electronics. According to the invention, the necessary electronics for recording and storage processes is contained in a single apparatus and is independent of optionally connected additional apparatuses and instruments. In addition, it requires only a small number of connecting lines and little electrical power. At that, the inventive trip recorder has a sufficiently large memory capacity for recording of the driving data which, in case of a failure of the voltage supply, are still secured, i.e., are stored permanently.
The trip recorder according to the present invention has very small dimensions and noticeable use advantages (in particular with regard to its mounting and maintenance costs) in comparison with conventional comparative apparatuses. The use of these apparatuses presents multiple operational and handling advantages which are practically provided only by digitally operating electronics. In addition, there exists a possibility to fetch directly, in accordance with a correct time of the day and in detail, time- and/or distance-dependent speeds which correspond to conditions of the vehicle during the respective time of the day. There further exists a possibility to connect different displays and terminals of which only a small nu
REFERENCES:
patent: 5191529 (1993-03-01), Ramsey et al.
patent: 5550738 (1996-08-01), Bailey et al.
Elms Richard T.
VDO Adolf Schindling AG
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