EP0809216A2 - Data communication device for a vehicle towed by a motor vehicle - Google Patents

Data communication device for a vehicle towed by a motor vehicle Download PDF

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Publication number
EP0809216A2
EP0809216A2 EP97103680A EP97103680A EP0809216A2 EP 0809216 A2 EP0809216 A2 EP 0809216A2 EP 97103680 A EP97103680 A EP 97103680A EP 97103680 A EP97103680 A EP 97103680A EP 0809216 A2 EP0809216 A2 EP 0809216A2
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EP
European Patent Office
Prior art keywords
communication device
data communication
data
power supply
transmitting
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Granted
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EP97103680A
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German (de)
French (fr)
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EP0809216A3 (en
EP0809216B1 (en
Inventor
Werner Politz
Wilhelm Dr. Grabow
Wolfgang Dr. Steiger
Rainer Schmedding
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station

Definitions

  • the invention relates to a data communication device for a vehicle pulled by a motor vehicle, to which electrical operating energy is transmitted to the motor vehicle via a cable connection.
  • the invention further relates to the use of such a data communication device.
  • ABS anti-lock braking system
  • An error signal can also be transmitted via the connection, which indicates whether the ABS is working correctly or a self-test device contained in the ABS has detected a functional fault.
  • Newly developed anti-lock braking systems have an expanded control system in which further data such as air suspension, type of fault and an electronic odometer can be integrated.
  • pad wear monitoring can be carried out for the brakes and the corresponding data can be saved. This data is regularly output via a diagnostic socket by hand and requires manual documentation or a portable terminal to which the data can be transferred.
  • the electronic distance counting by counting the wheel impulses of the ABS fails if the driver foregoes the ABS activation for manipulation reasons, i.e. pulls the ABS connector and thus interrupts the power supply to the ABS caused by the towing vehicle. In this case, the ABS is no longer effective, but the pneumatically normal-acting brakes still work.
  • the present invention therefore starts from the problem of being able to capture trailer data largely tamper-proof and to be able to transmit it in a manner that is easy to handle.
  • a data communication device of the type mentioned at the outset is characterized according to the invention by its own power supply, a data acquisition unit and a short-range wireless transmission and reception device for transmitting data from the data acquisition unit to an external transmission and reception station.
  • the data communication device provides data acquisition for the trailer autonomously from the towing vehicle, so that it is not possible to cut off the power supply by interrupting the power supply from the towing vehicle.
  • the data stored in the data acquisition unit is transferred wirelessly with the data communication device according to the invention via a short-range transmission and reception device to an external transmission and reception station.
  • the data communication can be carried out regularly when driving past an external transmitting and receiving station, the transmitting and receiving device of the towed vehicle expediently being formed by a transponder so that the data communication is triggered by the external transmitting and receiving station.
  • An essential prerequisite for the data communication device according to the invention is that it operates with an extremely low power consumption, so that its own power supply can operate reliably and, for example, not on empty batteries or the like. is instructed.
  • a pulse generator is provided on at least one wheel of the towed vehicle which, depending on the movement of the wheel, emits pulses which at least also reach a power supply unit with a rectifier, so that preferably also used as measuring pulses Pulses the energy for the data acquisition unit is generated.
  • a backup battery can be provided for the supplementary power supply if, for example, the electrical energy transmitted by the pulses should become too low during an extremely slow travel.
  • a connection to the power supply for the rear light, brake light and direction indicator can also be provided, from which energy can be drawn, which is preferably stored in a rechargeable battery.
  • the short-range wireless data communication preferably takes place in the GHz range.
  • Such a data communication system which works with a transponder in the vehicle, is known from proposals for traffic control technology, in particular the automatic collection of road user charges, and is explained in principle in DE 42 13 880 A1, for example.
  • the data acquisition unit provided in the data communication device according to the invention can be part of a control system installed in the towed vehicle for a brake blocking protection device.
  • the pulse generator is preferably also a sensor of the anti-lock device. Since all the movements of the wheels can be determined and evaluated from the wheel impulses of the sensors of the anti-lock device, these can be used without difficulty to determine the distance traveled.
  • the data acquisition unit according to the invention can of course also record further data or be networked with other data sources.
  • Additional data are identification data for the trailer and possibly other data that can also be used in particular to control an immobilizer function for the trailer, in order to allow only authorized use of the trailer.
  • the immobilizer function can be carried out, for example, by a common effectiveness control of all brakes of the trailer, that is to say via the pneumatic valves belonging to the ABS.
  • the data communication device can be used particularly advantageously in rental stations for trailers, in which an automatic issue and return control for the towed vehicle can be carried out with the external sending and receiving station. It is also possible to use the trailer data to control entry and / or exit controls.
  • FIG. 1 shows a transmitting and receiving station 1, which can be installed stationary and connected to an evaluation center 2.
  • the transmitting and receiving station has an antenna 3, which is designed for short-range transmission of data in conjunction with an antenna 4 of a trailer 5, which is a towed vehicle.
  • the antenna 4 of the trailer 5 is part of a transmitting and receiving device 6, which is preferably designed as a transponder and is intended for communication with the transmitting and receiving station at a frequency of 5.8 GHz.
  • the communication between the transmitting and receiving station 1 and the transmitting and receiving device 6 takes place sequentially by sending out a pulse train from the transmitting and receiving station 1 (uplink) and by modulating the pulse train to transmit data information through the transponder 6 and sending back the modulated pulse signals ( Downlink).
  • the advantage of this communication method which is described, for example, in DE 42 13 880 A1, is that the energy 6 required by the transponder is obtained from the pulse signals transmitted by the transmitting and receiving station 1.
  • the data transmitted by the transmitting and receiving device 6 are generated and processed in a data acquisition unit 7.
  • a sensor 9 is connected to four wheels 8 of the trailer 5, the output pulses generated depending on the movement of the associated wheel 8, that is, represents a pulse generator that generates pulses depending on the movement of the wheels 8.
  • the pulses from the sensors 9 arrive at a controller 10, in which the movements of the wheels 8 are evaluated and ABS control signals are generated, with which the action of the brakes is controlled.
  • the pulses from the sensors 9 also reach a distance counter 11, in which the distance traveled by the trailer 5 is evaluated from the pulses of the sensors 9.
  • the route signal formed reaches the transponder 6 as a processed data signal via a communication interface and data memory 12.
  • data acquisition stage 13 data for identifying the special trailer 5 can also be entered, so that the transmitting and receiving station 1 can be used for automatic check-in and check-out in a rental station for trailers 5.
  • the entry or exit to or from the rental station can be controlled in a corresponding manner, for example by a barrier.
  • the output pulses from the sensors 9 are also passed to a power supply unit 14 in which the pulses are rectified and a DC voltage for supplying the data acquisition unit 7 is formed from this. It is assumed that a power supply for the odometer 11 is only required if the wheels 8 actually move.
  • the DC voltage produced by the power supply unit 14 may be too low to supply the data acquisition unit 7.
  • the power supply unit 14 can be equipped with a backup battery 15, which takes over the power supply for the extreme exceptional cases of a particularly slow journey.
  • the backup battery 15 can be designed as an accumulator that can be recharged again and again.
  • Figure 2 shows an exemplary embodiment of a power supply to the ABS control 10 through branch lines 16 from power supply lines 17 for flashing and warning lights 18 of the trailer 5.
  • the power supply lines 17 are supplied via a connector 19 of the trailer 5 from the towing vehicle, which is also done by charging a backup battery can be done.
  • the ABS control unit 10 is also connected to the towing vehicle via a plug 20.
  • the data acquisition unit 7 according to the invention and the transmitting and receiving device 6 can be operated independently of a power supply for the towing vehicle and are always ready for operation, so that an odometer is constantly being counted.
  • the data determined in this way are stored in the data memory 12 and can be called up and checked continuously by a transmitting and receiving station 1 in cooperation with the transmitting and receiving device 6 of the trailer 5.

Abstract

The communications device has its own power supply, a data acquisition unit (7) and a wireless, short-range data transmission/reception unit (6) for communication data from the data acquisition unit to an external transmission-reception station (1). At least one pulse generator generates pulses depending on the movement of a wheel (8) of the towed vehicle (5). The device also contains a current supply unit (14) with a rectifier for the pulses which are delivered to it.

Description

Die Erfindung betrifft ein Datenkommunikationsgerät für ein von einem Kraftfahrzeug gezogenes Fahrzeug, dem elektrische Betriebsenergie über eine Kabelverbindung zum Kraftfahrzeug übertragen wird. Die Erfindung betrifft ferner eine Verwendung eines derartigen Datenkommunikationsgeräts.The invention relates to a data communication device for a vehicle pulled by a motor vehicle, to which electrical operating energy is transmitted to the motor vehicle via a cable connection. The invention further relates to the use of such a data communication device.

Nutzfahrzeuganhänger (einschließlich Sattelauflieger) erhalten ihre Stromversorgung für Signallampen, Beleuchtung, elektrische Regelschaltungen, einschließlich ein Anti-Blockier-System (ABS) regelmäßig vom ziehenden Kraftfahrzeug. Dies hat zur Folge, daß die elektronischen bzw. elektrischen Funktionsgruppen der Anhänger nicht funktionieren, wenn die Verbindung zum ziehenden Kraftfahrzeug nicht hergestellt ist. Für Nutzfahrzeuganhänger und Sattelauflieger ist seit einiger Zeit ein Antiblockiersystem (ABS) vorgeschrieben. Beim ABS nehmen Radsensoren die Bewegung der Räder auf und geben entsprechende Impulse an eine zentrale Steuerung des ABS. Über Pneumatikventile wird die Funktion der Bremsen so gesteuert, daß das Blockieren der Bremsen vermieden wird. Für die Wirksamschaltung des ABS des Anhängers muß ein Stecker des Anhängers in eine genormte Steckdose des Fahrzeugs gesteckt werden, damit das Steuergerät seine Stromversorgung erhält. Über die Verbindung ist ferner ein Fehlersignal übertragbar, das angibt, ob das ABS fehlerfrei arbeitet oder eine in der ABS enthaltene Selbsttesteinrichtung einen Funktionsfehler detektiert hat. Neu entwickelte Antiblockiersysteme weisen eine erweiterte Steuerung auf, in der weitere Daten wie Luftfederung, Fehlerart und ein elektronischer Wegstreckenzähler integriert sein können. Darüber hinaus kann eine Belagverschleißüberwachung für die Bremsen durchgeführt und die entsprechenden Daten abgespeichert werden. Die Ausgabe dieser Daten erfolgt regelmässig über eine Diagnosesteckdose von Hand und erfordert eine manuelle Dokumentation oder über ein anschließbares tragbares Terminal, auf das die Daten übertragen werden können.Commercial vehicle trailers (including semi-trailers) regularly receive their power supply for signal lamps, lighting, electrical control circuits, including an anti-lock braking system (ABS) from the pulling motor vehicle. The consequence of this is that the electronic or electrical functional groups of the trailers do not function if the connection to the pulling motor vehicle is not established. An anti-lock braking system (ABS) has been mandatory for commercial vehicle trailers and semi-trailers for some time. With ABS, wheel sensors record the movement of the wheels and give appropriate impulses to a central control of the ABS. The function of the brakes is controlled via pneumatic valves so that the brakes are not locked. To activate the trailer's ABS, a plug of the trailer must be plugged into a standard socket on the vehicle so that the control unit receives its power supply. An error signal can also be transmitted via the connection, which indicates whether the ABS is working correctly or a self-test device contained in the ABS has detected a functional fault. Newly developed anti-lock braking systems have an expanded control system in which further data such as air suspension, type of fault and an electronic odometer can be integrated. In addition, pad wear monitoring can be carried out for the brakes and the corresponding data can be saved. This data is regularly output via a diagnostic socket by hand and requires manual documentation or a portable terminal to which the data can be transferred.

Es besteht vielfach ein erhebliches Bedürfnis, bei Anhängern die zurückgelegte Wegstrecke manipulationssicher zu erfassen. Die elektronische Wegstreckenzählung durch Zählung der Radimpulse des ABS versagt, wenn der Fahrer aus Manipulationsgründen auf die Wirksamschaltung des ABS verzichtet, den ABS-Stecker also zieht und damit die durch das Zugfahrzeug bewirkte Stromversorgung des ABS unterbricht. In diesem Fall ist zwar das ABS nicht mehr wirksam, die pneumatisch normal wirkenden Bremsen funktionieren jedoch weiterhin.There is often a considerable need to tamper-proof the distance traveled by trailers. The electronic distance counting by counting the wheel impulses of the ABS fails if the driver foregoes the ABS activation for manipulation reasons, i.e. pulls the ABS connector and thus interrupts the power supply to the ABS caused by the towing vehicle. In this case, the ABS is no longer effective, but the pneumatically normal-acting brakes still work.

Bekannt ist ferner, Anhänger mit einem mechanischen Wegstreckenzähler an der Radnabe auszustatten. Diese sind jedoch im rauhen Betrieb störanfällig und darüber hinaus leicht manipulierbar.It is also known to equip trailers with a mechanical odometer on the wheel hub. However, these are prone to failure in rough operation and are also easy to manipulate.

Die vorliegende Erfindung geht daher von der Problemstellung aus, Anhängerdaten weitgehend manipulationssicher zu erfassen und leicht handhabbar übermitteln zu können.The present invention therefore starts from the problem of being able to capture trailer data largely tamper-proof and to be able to transmit it in a manner that is easy to handle.

Ausgehend von dieser Problemstellung ist ein Datenkommunikationsgerät der eingangs erwähnten Art erfindungsgemäß gekennzeichnet durch eine eigene Stromversorgung, eine Datenerfassungseinheit und eine drahtlose kurzreichweitige Sende- und Empfangseinrichtung zur Übertragung von Daten der Datenerfassungseinheit auf eine externe Sende- und Empfangsstation.Based on this problem, a data communication device of the type mentioned at the outset is characterized according to the invention by its own power supply, a data acquisition unit and a short-range wireless transmission and reception device for transmitting data from the data acquisition unit to an external transmission and reception station.

Durch das erfindungsgemäße Datenkommunikationsgerät erfolgt die Datenerfassung für den Anhänger autark vom Zugfahrzeug, so daß eine Unterbindung der Stromversorgung durch Unterbrechen der Stromversorgung vom Zugfahrzeug aus nicht möglich ist. Die Übergabe der in der Datenerfassungseinheit gespeicherten Daten erfolgt mit dem erfindungsgemäßen Datenkommunikationsgerät drahtlos über eine kurzreichweitige Sende- und Empfangseinrichtung auf eine externe Sende- und Empfangsstation. Dadurch kann die Datenkommunikation regelmäßig bei einer Vorbeifahrt an einer externen Sende- und Empfängsstation vorgenommen werden, wobei zweckmäßigerweise die Sende- und Empfangseinrichtung des gezogenen Fahrzeugs durch einen Transponder gebildet ist, so daß die Datenkommunikation durch die externe Sende- und Empfangsstation ausgelöst wird.The data communication device according to the invention provides data acquisition for the trailer autonomously from the towing vehicle, so that it is not possible to cut off the power supply by interrupting the power supply from the towing vehicle. The data stored in the data acquisition unit is transferred wirelessly with the data communication device according to the invention via a short-range transmission and reception device to an external transmission and reception station. As a result, the data communication can be carried out regularly when driving past an external transmitting and receiving station, the transmitting and receiving device of the towed vehicle expediently being formed by a transponder so that the data communication is triggered by the external transmitting and receiving station.

Für das erfindungsgemäße Datenkommunikationsgerät ist eine wesentliche Voraussetzung, daß es mit einem äußerst geringen Stromverbrauch arbeitet, so daß die eigene Stromversorgung betriebssicher arbeiten kann und beispielsweise nicht auf sich leerende Batterien o.ä. angewiesen ist.An essential prerequisite for the data communication device according to the invention is that it operates with an extremely low power consumption, so that its own power supply can operate reliably and, for example, not on empty batteries or the like. is instructed.

In einer besonders bevorzugten Ausführungsform der Erfindung ist an wenigstens einem Rad des gezogenen Fahrzeugs ein Impulsgeber vorgesehen, der in Abhängigkeit von der Bewegung des Rades Impulse abgibt, die zumindest auch auf eine Stromversorgungseinheit mit einem Gleichricher gelangen, so daß aus den vorzugsweise auch als Meßimpulse verwendeten Impulsen die Energie für die Datenerfassungseinheit erzeugt wird. Selbstverständlich kann dabei eine Stützbatterie zur ergänzenden Stromversorgung vorgesehen werden, wenn beispielsweise während einer extremen Langsamfahrt die durch die Impulse übertragene elektrische Energie zu gering werden sollte. Als Ergänzung für die Stromversorgung kann ferner ein Anschluß an die Stromversorgung von Rücklicht, Bremslicht und Fahrtrichtungsanzeiger vorgesehen werden, aus dem ggfs. Energie entnommen werden kann, die vorzugsweise in einem aufladbaren Akkumulator gespeichert wird.In a particularly preferred embodiment of the invention, a pulse generator is provided on at least one wheel of the towed vehicle which, depending on the movement of the wheel, emits pulses which at least also reach a power supply unit with a rectifier, so that preferably also used as measuring pulses Pulses the energy for the data acquisition unit is generated. Of course, a backup battery can be provided for the supplementary power supply if, for example, the electrical energy transmitted by the pulses should become too low during an extremely slow travel. As a supplement to the power supply, a connection to the power supply for the rear light, brake light and direction indicator can also be provided, from which energy can be drawn, which is preferably stored in a rechargeable battery.

Die kurzreichweitige drahtlose Datenkommunikation findet vorzugsweise im GHz-Bereich statt. Ein derartiges Datenkommunikationssystem, das mit einem Transponder im Fahrzeug arbeitet, ist aus Vorschlägen für die Verkehrsleittechnik, insbesondere die automatische Erhebung von Straßenbenutzungsgebühren, bekannt und beispielsweise in der DE 42 13 880 A1 im Prinzip erläutert.The short-range wireless data communication preferably takes place in the GHz range. Such a data communication system, which works with a transponder in the vehicle, is known from proposals for traffic control technology, in particular the automatic collection of road user charges, and is explained in principle in DE 42 13 880 A1, for example.

Die in dem erfindungsgemäßen Datenkommunikationsgerät vorgesehene Datenerfassungseinheit kann in einer bevorzugten Ausführungsform Teil einer im gezogenen Fahrzeug installierten Steuerung für eine Bremsenblockierschutzeinrichtung sein. Insbesondere ist der Impulsgeber vorzugsweise zugleich ein Sensor der Blockierschutzeinrichtung. Da aus den Radimpulsen der Sensoren der Blockierschutzeinrichtung alle Bewegungen der Räder ermittelt und ausgewertet werden können, können diese ohne weiteres zur Ermittlung der zurtickgelegten Wegstrecke verwendet werden.In a preferred embodiment, the data acquisition unit provided in the data communication device according to the invention can be part of a control system installed in the towed vehicle for a brake blocking protection device. In particular, the pulse generator is preferably also a sensor of the anti-lock device. Since all the movements of the wheels can be determined and evaluated from the wheel impulses of the sensors of the anti-lock device, these can be used without difficulty to determine the distance traveled.

Die erfindungsgemäße Datenerfassungseinheit kann selbstverständlich auch weitere Daten aufnehmen oder mit anderen Datenquellen vernetzt sein. Hierzu gehören alle Datenquellen der bekannten ABS-Einrichtungen. Zusätzliche Daten sind Identifikationsdaten für den Anhänger und ggfs. sonstige Daten, die insbesondere auch zur Steuerung einer Wegfahrsperrfunktion für den Anhänger verwendbar sind, um nur einen autorisierten Gebrauch des Anhängers zu erlauben. Die Wegfahrsperrfunktion kann beispielsweise durch eine gemeinsame Wirksamsteuerung aller Bremsen des Anhängers erfolgen, also über die zum ABS gehörenden Pneumatikventile.The data acquisition unit according to the invention can of course also record further data or be networked with other data sources. This includes all data sources of the known ABS devices. Additional data are identification data for the trailer and possibly other data that can also be used in particular to control an immobilizer function for the trailer, in order to allow only authorized use of the trailer. The immobilizer function can be carried out, for example, by a common effectiveness control of all brakes of the trailer, that is to say via the pneumatic valves belonging to the ABS.

Das erfindungsgemäße Datenkommunikationsgerät läßt sich insbesondere mit Vorteil bei Verleihstationen für Anhänger verwenden, bei denen eine automatische Ausgabe- und Rückgabekontrolle für das gezogene Fahrzeug mit der externen Sende- und Empfangsstation vorgenommen werden kann. Ferner ist es möglich, die Daten des Anhängers auch zur Steuerung von Einfahrts- und/oder Ausfahrtskontrollen zu verwenden.The data communication device according to the invention can be used particularly advantageously in rental stations for trailers, in which an automatic issue and return control for the towed vehicle can be carried out with the external sending and receiving station. It is also possible to use the trailer data to control entry and / or exit controls.

Die Erfindung soll im folgenden anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert werden. Es zeigen:

Figur 1 -
eine schematische Darstellung einer Sende- und Empfangsstation
Figur 2 -
eine schematische Darstellung für eine Hilfs-Stromversorgung aus der Stromversorgung für Blink- und Warnleuchten des Anhängers.
The invention will be explained in more detail below with reference to an embodiment shown in the drawing. Show it:
Figure 1 -
is a schematic representation of a transmitting and receiving station
Figure 2 -
a schematic representation of an auxiliary power supply from the power supply for flashing and warning lights of the trailer.

In Figur 1 ist eine Sende- und Empfangsstation 1 dargestellt, die stationär installiert und mit einer Auswertungszentrale 2 verbunden sein kann. Die Sende- und Empfangsstation weist eine Antenne 3 auf, die für eine kurzreichweitige Übertragung von Daten im Zusammenspiel mit einer Antenne 4 eines Anhängers 5, der ein gezogenes Fahrzeug ist, ausgelegt ist. Die Antenne 4 des Anhängers 5 ist Teil einer Sende- und Empfangseinrichtung 6, die vorzugsweise als Transponder ausgebildet und zur Kommunikation mit der Sende- und Empfangsstation auf einer Frequenz von 5,8 GHz bestimmt ist. Die Kommunikation zwischen der Sende- und Empfangsstation 1 und der Sende- und Empfangseinrichtung 6 erfolgt sequentiell durch Aussenden einer Impulsfolge der Sende- und Empfangsstation 1 (Uplink) und durch Modulation der Impulsfolge zur Übertragung von Dateninformationen durch den Transponder 6 und Rücksendung der modulierten Impulssignale (Downlink). Der Vorteil dieses Kommunikationsverfahrens, das beispielsweise in der DE 42 13 880 A1 beschrieben ist, besteht darin, daß die vom Transponder benötigte Energie 6 aus den von der Sende- und Empfangsstation 1 übersandten Impulssignalen gewonnen wird.FIG. 1 shows a transmitting and receiving station 1, which can be installed stationary and connected to an evaluation center 2. The transmitting and receiving station has an antenna 3, which is designed for short-range transmission of data in conjunction with an antenna 4 of a trailer 5, which is a towed vehicle. The antenna 4 of the trailer 5 is part of a transmitting and receiving device 6, which is preferably designed as a transponder and is intended for communication with the transmitting and receiving station at a frequency of 5.8 GHz. The communication between the transmitting and receiving station 1 and the transmitting and receiving device 6 takes place sequentially by sending out a pulse train from the transmitting and receiving station 1 (uplink) and by modulating the pulse train to transmit data information through the transponder 6 and sending back the modulated pulse signals ( Downlink). The advantage of this communication method, which is described, for example, in DE 42 13 880 A1, is that the energy 6 required by the transponder is obtained from the pulse signals transmitted by the transmitting and receiving station 1.

Die von der Sende- und Empfangseinrichtung 6 übertragenen Daten werden in einer Datenerfassungseinheit 7 erzeugt und aufbereitet.The data transmitted by the transmitting and receiving device 6 are generated and processed in a data acquisition unit 7.

In dem dargestellten Ausführungsbeispiel sind an vier Rädern 8 des Anhängers 5 jeweils ein Sensor 9 angeschlossen, der Ausgangsimpulse in Abhängigkeit von der Bewegung des zugeordneten Rades 8 erzeugt, also einen Impulsgenerator darstellt, der Impulse in Abhängigkeit von der Bewegung der Räder 8 erzeugt. Die Impulse der Sensoren 9 gelangen auf eine Steuerung 10, in der die Bewegungen der Räder 8 ausgewertet und ABS-Steuersignale erzeugt, mit denen die Wirkung der Bremsen gesteuert wird.In the illustrated embodiment, a sensor 9 is connected to four wheels 8 of the trailer 5, the output pulses generated depending on the movement of the associated wheel 8, that is, represents a pulse generator that generates pulses depending on the movement of the wheels 8. The pulses from the sensors 9 arrive at a controller 10, in which the movements of the wheels 8 are evaluated and ABS control signals are generated, with which the action of the brakes is controlled.

Die Impulse der Sensoren 9 gelangen ferner auf einen Wegstreckenzähler 11, in dem aus den Impulsen der Sensoren 9 die zurückgelegte Wegstrecke des Anhängers 5 ausgewertet wird. Das gebildete Wegstreckensignal gelangt über eine Kommunikationsschnittstelle und Datenspeicher 12 als aufbereitetes Datensignal zum Transponder 6.The pulses from the sensors 9 also reach a distance counter 11, in which the distance traveled by the trailer 5 is evaluated from the pulses of the sensors 9. The route signal formed reaches the transponder 6 as a processed data signal via a communication interface and data memory 12.

Über die Kommunikationsschnittstelle 12 können auch andere Daten übertragen werden, die in anderer Weise, ggfs. durch spezielle Sensoren oder durch am Anhänger 5 vorgesehene Lesegeräte erfaßt werden. Eine Stufe zur Erfassung dieser anderen Daten ist in der Zeichnung schematisch als Datenerfassungstufe 13 dargestellt. In diese Datenerfassungsstufe 13 können beispielsweise auch Daten zur Identifizierung des speziellen Anhängers 5 eingegeben werden, so daß die Sende- und Empfangsstation 1 zum automatischen Einchecken und Auschecken in einer Verleihstation für Anhänger 5 ausgenutzt werden kann. In entsprechender Weise kann auch die Einfahrt bzw. Ausfahrt zu bzw. von der Verleihstation, beispielsweise durch eine Schranke, kontrolliert werden.Other data can also be transmitted via the communication interface 12, which data is acquired in a different way, if necessary by special sensors or by reading devices provided on the trailer 5. A stage for acquiring this other data is shown schematically in the drawing as data acquisition stage 13. In this data acquisition stage 13, for example, data for identifying the special trailer 5 can also be entered, so that the transmitting and receiving station 1 can be used for automatic check-in and check-out in a rental station for trailers 5. The entry or exit to or from the rental station can be controlled in a corresponding manner, for example by a barrier.

Um die erfindungsgemäß benötigte eigene Stromversorgung für die Datenerfassungseinheit 7 und insbesondere für den Wegstreckenzähler 11 und die Bereitstellung der Daten in Kommunikationsstelle und Datenspeicher 12, zu gewährleisten, werden die Ausgangsimpulse der Sensoren 9 auch auf eine Stromversorgungseinheit 14 geleitet, in der die Impulse gleichgerichtet werden und hieraus eine Gleichspannung zur Versorgung der Datenerfassungseinheit 7 gebildet wird. Dabei wird davon ausgegangen, daß eine Stromversorgung für den Wegstreckenzähler 11 nur erforderlich ist, wenn sich die Räder 8 auch tatsächlich bewegen.In order to ensure the own power supply required according to the invention for the data acquisition unit 7 and in particular for the odometer 11 and the provision of the data in the communication point and data storage 12, the output pulses from the sensors 9 are also passed to a power supply unit 14 in which the pulses are rectified and a DC voltage for supplying the data acquisition unit 7 is formed from this. It is assumed that a power supply for the odometer 11 is only required if the wheels 8 actually move.

Aus Gründen der Übersichtlichkeit sind nur zwei der vier dargestellten Sensoren 9 mit der Stromversorgungseinheit 14 verbunden. Regelmäßig werden aber alle vier Sensoren 9 an die Stromversorgungseinheit 14 angeschlossen sein.For reasons of clarity, only two of the four sensors 9 shown are connected to the power supply unit 14. However, all four sensors 9 are regularly connected to the power supply unit 14.

Für den Fall einer sehr langsamen Bewegung der Räder 8 kann es vorkommen, daß die von der Stromversorgungseinheit 14 produzierte Gleichspannung zu niedrig ist, um die Datenerfassungseinheit 7 zu versorgen. Für diesen Fall kann die Stromversorgungseinheit 14 mit einer Stützbatterie 15 ausgestattet sein, die für die extremen Ausnahmefälle einer besonders langsamen Fahrt die Stromversorgung übernimmt. Die Stützbatterie 15 kann dabei als Akkumulator ausgebildet sein, der immer wieder aufgeladen werden kann.In the event of a very slow movement of the wheels 8, the DC voltage produced by the power supply unit 14 may be too low to supply the data acquisition unit 7. In this case, the power supply unit 14 can be equipped with a backup battery 15, which takes over the power supply for the extreme exceptional cases of a particularly slow journey. The backup battery 15 can be designed as an accumulator that can be recharged again and again.

Figur 2 zeigt als Ausführungsbeispiel eine Stromversorgung der ABS-Steuerung 10 durch Abzweigungsleitungen 16 aus Stromversorgungsleitungen 17 für Blink- und Warnleuchten 18 des Anhängers 5. Die Stromversorgungsleitungen 17 werden über einen Anschlußstecker 19 des Anhängers 5 vom Zugfahrzeug versorgt, was ebenfalls über die Aufladung einer Stützbatterie erfolgen kann.Figure 2 shows an exemplary embodiment of a power supply to the ABS control 10 through branch lines 16 from power supply lines 17 for flashing and warning lights 18 of the trailer 5. The power supply lines 17 are supplied via a connector 19 of the trailer 5 from the towing vehicle, which is also done by charging a backup battery can be done.

Auch das ABS-Steuergerät 10 ist über einen Stecker 20 mit dem Zugfahrzeug verbunden.The ABS control unit 10 is also connected to the towing vehicle via a plug 20.

Die erfindungsgemäße Datenerfassungseinheit 7 und die Sende- und Empfangseinrichtung 6 können unabhängig von einer Stromversorgung des Zugfahrzeugs betrieben werden und sind immer betriebsbereit, so daß eine Wegstreckenzählung ständig stattfindet. Die dabei ermittelten Daten werden in dem Datenspeicher 12 gespeichert und sind durch eine Sende- und Empfangsstation 1 im Zusammenwirken mit der Sende- und Empfangseinrichtung 6 des Anhängers 5 ständig abrufbar und überprüfbar.The data acquisition unit 7 according to the invention and the transmitting and receiving device 6 can be operated independently of a power supply for the towing vehicle and are always ready for operation, so that an odometer is constantly being counted. The data determined in this way are stored in the data memory 12 and can be called up and checked continuously by a transmitting and receiving station 1 in cooperation with the transmitting and receiving device 6 of the trailer 5.

Erstmalig ist somit auf elektronischem Wege eine vollständige, weitgehend manipulationssichere und ständig kontrollierbare Erfassung der zurückgelegten Wegstrecke des Anhängers 5 möglich geworden.For the first time, electronic, complete, largely tamper-proof and constantly controllable detection of the distance traveled by the trailer 5 has become possible.

Claims (14)

Datenkommunikationsgerät für ein von einem Kraftfahrzeug gezogenes Fahrzeug (5), dem elektrische Betriebsenergie über eine Kabelverbindung zum Kraftfahrzeug übertragen wird, gekennzeichnet durch eine eigene Stromversorgung (14), eine Datenerfassungseinheit (7) und durch eine drahtlose kurzreichweitige Sende- und Empfangseinrichtung (6) zur Übertragung von Daten der Datenerfassungseinheit (7) auf eine externe Sende- und Empfangsstation (1).Data communication device for a vehicle (5) pulled by a motor vehicle, to which electrical operating energy is transmitted to the motor vehicle via a cable connection, characterized by its own power supply (14), a data acquisition unit (7) and by a short-range wireless transmission and reception device (6) Transmission of data from the data acquisition unit (7) to an external transmitting and receiving station (1). Datenkommunikationsgerät nach Anspruch 1, gekennzeichnet, durch wenigstens einen Impulsgeber (9), der in Abhängigkeit von der Bewegung eines Rades (8) des gezogenen Fahrzeugs (5) Impulse abgibt und durch eine Stromversorgungseinheit (14) mit einem Gleichrichter für die ihr zugeführten Impulse.Data communication device according to claim 1, characterized by at least one pulse generator (9) which emits pulses depending on the movement of a wheel (8) of the towed vehicle (5) and by a power supply unit (14) with a rectifier for the pulses supplied to it. Datenkommunikationsgerät nach Anspruch 1 oder 2, gekennzeichnet durch eine Stützbatterie (15) zur ergänzenden Stromversorgung.Data communication device according to claim 1 or 2, characterized by a backup battery (15) for supplementary power supply. Datenkommunikationsgerät nach einem der Ansprüche 1 bis 3, gekennzeichnet durch einen Anschluß an die Stromversorgung von Rücklicht, Bremslicht und Fahrtrichtungsanzeiger zur ergänzenden Stromversorgung.Data communication device according to one of claims 1 to 3, characterized by a connection to the power supply of the rear light, brake light and direction indicators for supplementary power supply. Datenkommunikationsgerät nach Anspruch 3 oder 4, gekennzeichnet durch einen durch überschüssige elektrische Energie aufladbaren Akkumulator.Data communication device according to claim 3 or 4, characterized by an accumulator which can be charged by excess electrical energy. Datenkommunikationsgerät nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Sende- und Empfangseinrichtung (6) durch einen Transponder gebildet ist.Data communication device according to one of claims 1 to 5, characterized in that the transmitting and receiving device (6) is formed by a transponder. Datenkommunikationsgerät nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Sende- und Empfangseinrichtung (6) zum Senden und Empfangen auf einer Frequenz im GHz-Bereich ausgelegt ist.Data communication device according to one of Claims 1 to 6, characterized in that the transmitting and receiving device (6) is designed for transmitting and receiving on a frequency in the GHz range. Datenkommunikationsgerät nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Datenerfassungseinheit (7) Teil einer im gezogenen Fahrzeug (5) installierten Steuerung (10) für eine Bremsen-Blockierschutzeinrichtung ist.Data communication device according to one of claims 1 to 7, characterized in that the data acquisition unit (7) is part of a control (10) installed in the towed vehicle (5) for a brake blocking protection device. Datenkommunikationsgerät nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Impulsgeber zugleich ein Sensor (9) der Blockierschutzeinrichtung ist.Data communication device according to one of claims 1 to 8, characterized in that the pulse generator is also a sensor (9) of the anti-lock device. Datenkommunikationsgerät nach einem der Ansprüche 2 bis 9, gekennzeichnet durch eine Auswertungsstufe (11) zur Auswertung der Impulse mehrerer, den Rädern (8) zugeordneter Impulsgeber (9) zur Ermittlung der zurückgelegten Wegstrecke.Data communication device according to one of Claims 2 to 9, characterized by an evaluation stage (11) for evaluating the pulses of a plurality of pulse generators (9) assigned to the wheels (8) for determining the distance traveled. Datenkommunikationsgerät nach einem der Ansprüche 1 bis 10, gekennzeichnet durch die Vernetzung der Datenerfassungseinheit (7) mit anderen Datenquellen.Data communication device according to one of claims 1 to 10, characterized by the networking of the data acquisition unit (7) with other data sources. Datenkommunikationsgerät nach einem der Ansprüche 1 bis 11, gekennzeichnet durch eine Steuerschaltung zur Durchführung einer Wegfahrsperrenfunktion.Data communication device according to one of claims 1 to 11, characterized by a control circuit for performing an immobilizer function. Verwendung eines Datenkommunikationsgeräts nach einem der Ansprüche 1 bis 12, zur Ausgabe- und Rückgabekontrolle des gezogenen Fahrzeugs (5).Use of a data communication device according to one of claims 1 to 12, for the output and return control of the towed vehicle (5). Verwendung eines Datenkommunikationsgeräts nach einem der Ansprüche 1 bis 12 zur Steuerung von Einfahrts- und/oder Ausfahrtskontrollen.Use of a data communication device according to one of claims 1 to 12 for controlling entry and / or exit controls.
EP97103680A 1996-05-22 1997-03-06 Data communication device for a vehicle towed by a motor vehicle Expired - Lifetime EP0809216B1 (en)

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US5900803A (en) 1999-05-04
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DE19620555A1 (en) 1997-11-27
EP0809216B1 (en) 2003-08-06

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