DE2920090A1 - ACCIDENT CURVE REGISTRATION DEVICE - Google Patents

Description

FROM KREISLER SCHÖNWALD ElSHOLD FUES FROM KREISLER KELLER SELTING WERNER

-3 ·

Applicant

Hermann Stockburger Kirnachweg 7 7742 St. Georgen

PATENT LAWYERS Dr.-Ing. by Kreisler 11973 Dr.-Ing. K. Schönwald, Cologne Dr.-Ing. K. W. Eishold, Bad Soden Dr. J. F. Fues, Cologne Dipl.-Chem. Alek von Kreisler, Cologne Dipl.-Chem. Carola Keller, Cologne DipL-lng. G. Selling, Cologne Dr. H-K. Werner, Cologne

DEICHMANNHAUS AM MAIN RAILWAY STATION D-5000 KOLN 1

May 17, 1979 Sg / En

The invention relates to an accident curve registration device for vehicles, with a vehicle speed registering memory, in which new speed values are continuously stored while driving while old speed values are deleted.

It is known to equip trucks with tachographs, which continuously register the vehicle speed. In this way it can be determined when the vehicle was in use and at what speed it was driven.

Furthermore, accident curve recorders are known in which on an endless magnetic tape loop the current driving

030047/0 * 97

speed is recorded while the previous speed recorded at the relevant point is deleted. In the event of an accident, the speed curve is the last traveled route recorded on the magnetic tape and can be accessed.

Both types of tachograph require the installation of complex recording devices in the vehicle. The recording devices have mechanical drive mechanisms and are therefore not maintenance-free over a long period of time applicable.

The increasing introduction of anti-lock braking systems the brakes of vehicles prevents vehicle speeds from being determined at the scene of the accident by measuring skid marks, because skid marks do not occur. For the reconstruction of the accident however, knowledge of the speeds of the vehicles involved is of great importance. Because of the relative The known tachographs can be removed with great effort and the requirement for regular maintenance not generally import with the large number of vehicles.

The object of the invention is to provide an accident curve recording device to create, which only requires the installation of a relatively cheap device in the individual vehicles, that is completely maintenance-free and that as legal evidence for the reconstruction of the accident suitable is.

0300 * 7/0 * 97

To solve this problem, the invention provides that the memory is an electronic memory whose output can be connected to an external writing device and the content of which can be transferred to the writing instrument by actuating a switch.

In this system, the vehicles only contain the electronic memory, its content not without additional equipment is optically readable or queryable. The scope of the recordings can, for example, be based on the respective the last 600 m traveled must be restricted. A resolution of 0.5 to 1.0 m is usually sufficient. the There are writing implements in the police vehicles that come to the scene of the accident after an accident. The memory will via a cable to the one in the police vehicle Connected to the pen and its content is transferred to the pen. The writing instrument transmits i.e. the contents of the memory on a data carrier that can be taken as evidence in the police files. The data carrier is created automatically without human intervention, so that human errors do not occur can.

In the individual vehicles themselves, only the memory is arranged, which is the case with corresponding mass production are extremely cheap to manufacture in integrated circuit technology. There is also a vehicle on Provide plug connection for the connecting cable of the writing instrument of the police vehicle and a switch for querying the memory content. This switch can be mechanically coupled to the connector so that when the cable is connected, either immediately or with a

930047/0417

ORIGINAL INSPECTED

know delay the query of the memory contents takes place. The writing instrument that requires a certain amount of maintenance and is subject to wear and tear, is only in the police vehicles and at certain checkpoints arranged so that the individual vehicle owners are not affected by maintenance tasks.

The speed values are recorded digitally at laterally successive scanning points. Laying down of the sampling points, the memory can be connected to a clock signal source, each when driving a a certain route generates a clock signal. For example, a clock signal can be generated every 0.5 m. In In this case, a new speed value is transferred to the memory every 0.5 m.

Alternatively, the memory can be connected to a clock signal source, the clock pulses with constant when driving Frequency generated. This is done in certain time intervals that are independent of the vehicle speed a new speed value is stored in the memory.

In order to make a subsequent interchanging of the data carriers that have been written by the writing instrument impossible, a read-only memory is expediently provided in connection with each memory which contains an individual identifier which can be transferred to the writing instrument. This individual identification is transferred to the data carrier when the memory is queried. It differs from vehicle to vehicle and in a sense represents a key figure. This key figure

• 10047/1411

is permanently assigned to the recorded speed profile. Thus, interchanges are impossible and the association of the recording with the vehicle cannot be doubted.

The read-only memory can be connected to the writing instrument through the switch, the switch being a the memory incrementing clock signal source controls. By operating the switch, the contents of the read-only memory and the memory are read out automatically.

A magnetic card writer can be used as a writing device, which records the contents of the memory and, if necessary, the

Contents of the read-only memory on a magnetic strip transmits. The magnetic stripe can be on a card that is filed with the accident report will. To secure the magnetic recording against unauthorized subsequent changes, if necessary various security and coding methods are used, which, however, are not the subject of the invention are.

In the following, an embodiment of the invention is explained in more detail with reference to the drawings.

Show it: .

Figure 1 shows the dashboard of a vehicle with the Memory is equipped and

FIG. 2 shows a block diagram of the accident curve recording device.

030047/0497

In Figure 1, the usual dashboard of a vehicle is shown. Behind the dashboard is the storage device 10 arranged, of which only a connector socket 11 for receiving the connector on the dashboard 12 of a connecting cable 13 and a switch 14, e.g. in the form of a push button, are visible.

The memory device 10 contains an analog / digital converter 15, which is connected to the vehicle speedometer 16 or to another speed measuring device, and the electronic memory 17, which can be a semiconductor memory, for example. The memory 17 is a multi-digit shift register, the content of which is incremented via clock signals which are supplied via a line 18 will. The output of the memory 17 is connected to the connection socket 11.

The manually operated switch 14 closes the output of a read-only memory 19 to the output socket 11 at. The read-only memory 19 contains a code that identifies the device in question. When the switch is closed 14, a delay element 20 is also switched on, which is a clock signal source 22 with a short time delay puts into operation. The output of the clock signal source 22 is connected to the clock input 18 of the memory 17.

During normal driving of the vehicle, the switch 14 is open. In the memory 17 are then regularly individual speed values are stored. The capacity of the memory 17 relates, for example over a distance of 600 m with a resolution of

030047/0497

.q.

0.5 m. The memory 17 thus has 1200 multi-digit sliding positions. While driving, the clock pulses for advancing the speed values in memory 17 are generated by a clock pulse generator 23, which generates a clock pulse when driving the distance of 0.5 m. Alternatively, it would also be possible to use the clock pulses of the clock pulse generator 22 for advancing the memory content of memory 17 to use. In this Case would also be the clock pulse generator 22 of a Device controlled that determines whether the vehicle is moving or not. If the vehicle is moving, it would Clock pulse generator 22 operated so that the memory 17 would be clocked with a constant pulse frequency.

In the illustrated embodiment, the memory content can be queried by the cable 13 with his Plug 12 is connected to socket 11. If the switch 14 is then closed, then first the content of the read-only memory 19 is read out and the timer 20 is activated at the same time. if The readout] »of the read-only memory 19 is finished, the timer 20 expires and then sets the clock generator 22 in function. This clocks the memory 17, from which the memory content is now output. The switch 14 can be coupled to the plug 12, so that it is ensured that the readout of the memory 17 takes place only after the plug 12 has made full contact with the socket 11.

The writing instrument 25 connected by the cable 13 to the storage device 10 can be installed in a police vehicle. It contains a feed device

030047/0497

device for a magnetic card 26 which is inserted into an insertion slot 27. The magnetic card 26 has a longitudinal one Magnetic strip 28 on which the identification data coming from the read-only memory 19 and the identification data from the Memory 17 coming speed information can be recorded. Instead of a magnetic recording, or In addition, a recording can also be made with an optically readable writing instrument. The card 26 then contains the identification number of the device read out from the read-only memory 19 and also the speed profile on the last distance traveled. Multiple cards 26 cannot be interchanged with each other, since each card is assigned to a specific device by its code number or motor vehicle is permanently assigned.

030047/0497

Claims (6)

Expectations Accident curve registration device for vehicles, with a memory which registers the vehicle speed and into which new speed values are continuously stored while driving, while old speed values are deleted, characterized in that the memory is an electronic memory (17), the output of which with a writing device (25) can be connected and the content of which can be transferred to the writing instrument (25) by actuating a switch (14). 2. Accident curve registration device according to claim 1, characterized characterized in that the memory (17) is connected to a clock signal source (23), each of the Driving a certain distance generates a clock signal. 3. accident curve registration device according to claim 1 or 2, characterized in that the memory (17) is connected to a clock signal source that is used when driving Clock signals generated with a constant frequency. -4. Accident curve recording device according to one of Claims 1 to 3, characterized in that a read-only memory (19) is provided, which is an individual identifier that can be transferred to the writing implement (25) contains. 5. accident curve registration device according to claim 4, characterized in that the read-only memory (19) is connected to the writing device (25) by means of the switch (14). 030047/0497 ■ ι- can be bound and that the switch (14) controls a clock signal source (22) which advances the memory (17). 6. accident curve registration device according to one of claims 1 to 5, characterized in that the Writing device (25) is a magnetic card writer that records the memory content and, if applicable, the content of the Read-only memory (19) on a magnetic strip (28) transmits. 030047/0497