EP3179457A1 - Système d'alarme pour une remorque de véhicule et procédé d'avertissement - Google Patents

Système d'alarme pour une remorque de véhicule et procédé d'avertissement Download PDF

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Publication number
EP3179457A1
EP3179457A1 EP16202560.5A EP16202560A EP3179457A1 EP 3179457 A1 EP3179457 A1 EP 3179457A1 EP 16202560 A EP16202560 A EP 16202560A EP 3179457 A1 EP3179457 A1 EP 3179457A1
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EP
European Patent Office
Prior art keywords
vehicle trailer
alarm system
trailer
detected
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16202560.5A
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German (de)
English (en)
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EP3179457B1 (fr
Inventor
Martin Mederer
Dominik Samson
Sandra SCHOTTTENHAMML
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
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Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
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Publication of EP3179457A1 publication Critical patent/EP3179457A1/fr
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems

Definitions

  • the present invention relates to an alarm system for a vehicle trailer (or trailer) and a method for alerting in the event of unauthorized access to a vehicle trailer.
  • Particularly advantageous aspects of the present invention relate to a cargo theft protection for trucks by utilizing an integrated acceleration sensor.
  • a cargo theft protection in commercial vehicles and in particular in their trailers is currently realized either via mechanical reinforcements or via electronic alarm systems.
  • the mechanical reinforcements may include, for example, a steel mesh or tarpaulin.
  • the electronic alarm systems are implemented, for example, using one of the following options: Geotracking the vehicle for localization or sensors for monitoring the storage room, door contacts or locking systems that control the goods in closed structures.
  • the sensors may also include thermal sensors for monitoring correct temperature curves or for monitoring a bellows pressure that changes due to charge weight changes.
  • a dispatcher immediately receives a message via a telematics system in the case of an unauthorized discharge.
  • direct alarm systems which trigger an alarm when detecting a person inside a trailer (for example, by a camera or a motion sensor) or in the event of unauthorized locomotion of the trailer (for example via a GPS signal).
  • DE 10 2014 001 303 A1 discloses a conventional vibration or acoustic based method for operating an authorization system, wherein unauthorized use of a vehicle is detected.
  • Another conventional alarm system is in DE 60 2005 002 828 T2 disclosed, wherein in this system, an alarm signal is triggered when at least one environment-dependent reference deviates.
  • the two conventional systems are not aimed at detecting unauthorized entry or removal of cargo on truck trailers.
  • the invention relates to an alarm system for a vehicle trailer, wherein the vehicle trailer comprises an acceleration sensor which is suitable for detecting vibrations on at least part of the vehicle trailer.
  • the alarm system comprises a detection module for detecting sensor signals from the acceleration sensor and an analysis module for analyzing the detected sensor signals to detect entry or discharge of the vehicle trailer based thereon and to enable alerting by generating an output signal.
  • tractor is intended to be interpreted broadly in the context of the present invention. In particular, this term should also include a semi-trailer as well as any other vehicle component that can be towed by a towing vehicle.
  • the output signal does not necessarily have to be used directly for alarming. The output signal also only needs to be stored in order to evaluate it later. Therefore, embodiments also include a memory module for storing the exemplary output signal.
  • modules ie the acquisition module, the analysis module, an alerting module and all other modules, for example implemented in software could be.
  • appropriate software routines may provide the defined functions when the software is installed, for example, in a vehicle control unit, such that the alarm system may be implemented by a (suitably programmed) control unit of the vehicle.
  • the analysis module is configured to detect at least one of the following characteristics for the detected vibrations: a predetermined vibration pattern, a minimum amplitude, a minimum duration of a vibration pattern.
  • the alarm system includes a control module configured to operate the sensing module and / or the analysis module in a power-saving mode and an operating mode.
  • the energy saving mode no analysis is performed when the detected vibration signals have amplitudes that are below a threshold. These signals are ignored.
  • the threshold value is exceeded by at least one oscillation pulse, the operating mode can be activated, wherein a subsequent analysis of the detected sensor signals takes place.
  • the detected vibration signals are, for example, vibration pulses which occur when a person enters the trailer.
  • the vibration pulses may in particular include the initial vibration when entering the trailer or semi-trailer, which initially has a certain minimum thickness.
  • the typical vibrational pulses upon entering comprise not only one pulse, but within a relatively short time there are several pulses (e.g., 2, 3, 4, 5, ... pulses) which are more or less regular. Therefore, in further embodiments, the analysis module is designed to detect a plurality of vibration pulses within a measurement period and to detect a movement of an unauthorized person on the vehicle trailer depending on a number and / or a pattern of the vibration pulses.
  • the vehicle trailer has at least one further sensor.
  • the detection module may be configured to detect further sensor data from the at least one further sensor
  • the analysis module may be configured to analyze the detected further sensor data to identify or confirm based on it on entering or unloading the vehicle trailer.
  • the at least one further sensor is at least one pressure sensor configured to detect a pressure in an air suspension or in at least one tire
  • the analysis module is configured to be an increase in the detected pressure in the air suspension or the tire Enter by an unauthorized person on the trailer.
  • the at least one further sensor is a further acceleration sensor or the acceleration sensor is a multiaxial acceleration sensor, so that further acceleration values can be detected.
  • the analysis module may be further configured to determine a change in direction of the detected vibration pulses from at least two acceleration values in order to detect entry by an unauthorized person. For example, entering (e.g., from the side) may trigger a lateral acceleration pulse.
  • the alarm system includes a power supply that ensures a minimum runtime for the alarm system.
  • the minimum term may include, for example, 8 hours or 10 hours or 12 hours or 24 hours or even one week.
  • the invention is not limited thereto. Rather, the capacity of the power supply can be flexibly adapted to the respective requirements.
  • the alarm system includes an interface for connecting the alarm system to a vehicle information system or to a telemetry system, wherein the analysis module may be configured to transmit the output signal via the interface to the vehicle information system or to the telemetry system.
  • the alarm system includes an optional alerting module configured to receive the alerting signal (output signal) and to trigger an alert upon detection of the vehicle-trailer, the alerting including visual alerting and / or audible alerting and / or sending of an alert Message can include.
  • the alerting module is not absolutely necessary, since the alerting can also be done by already existing alerting options, so that, for example, a driver (or another person) is notified of the detected entry.
  • the detection module is further configured to detect movement of the vehicle trailer
  • the analysis module is further configured to disable identification of vehicle-trailer engagement upon detected movement of the vehicle trailer.
  • the movement of the vehicle trailer can be detected, for example, by detecting a specific acceleration direction or a specific vibration pulse.
  • starting the vehicle together with the vehicle trailer causes an acceleration value to be triggered in a direction of vehicle movement.
  • Such an acceleration value is not typical for the entry of the vehicle trailer by an unauthorized person, so that it can be concluded that this is not an alarming process, but a regular movement that does not need to be detected further.
  • it is also possible to detect via the CAN signal available in the trailer (CAN Controller Area Network) whether the trailer is moving or standing. When the trailer drives, the detection is switched off again.
  • CAN Controller Area Network
  • the present invention also relates to a vehicle trailer having an acceleration sensor and one of the alarm systems described above. Further, the present invention also relates to a vehicle trailer with an electronic stability program (ESP) or RSP (roll stability program), wherein the acceleration sensor is part of the ESP / RSP. Exemplary embodiments thus include, in particular, the use of an ESP / RSP sensor already installed in the trailer for detecting an unauthorized access.
  • ESP electronic stability program
  • RSP roll stability program
  • the present invention also relates to a method of alerting in the event of an unauthorized entry of a vehicle trailer, the vehicle trailer again having an acceleration sensor which is suitable for detecting vibrations on at least one part of the vehicle trailer.
  • the method includes the steps of sensing sensor signals from the acceleration sensor and analyzing the detected sensor signals to identify entry or unloading of the vehicle trailer based thereon.
  • the method includes generating an output signal to enable alerting.
  • This method may also be implemented or stored in the form of instructions in software or on a computer program product, which stored instructions are capable of performing the steps of the method when the method is run on a processor (eg, in an ESP / RSP controller Unit or in another vehicle control unit) is running. Therefore, the present invention also relates to a computer program product having software code (software instructions) stored thereon configured to perform one of the above-described methods or to provide functions when the software code is executed by a processing unit.
  • the processing unit may be any form of computer or vehicle control unit having a corresponding microprocessor capable of executing a software code.
  • the present invention solves the above-mentioned technical problem by a combination of the following two aspects:
  • an existing infrastructure is used to safely and inexpensively detect vibrations caused by unauthorized entry of a trailer.
  • embodiments make it possible to use the output signal to activate suitable countermeasures such as, for example, a local alarm system by means of sound or light effects. Since full integration with existing components is possible, the invention is simple to implement and also safe and reliable.
  • an existing ESP / RSP in the trailer can be used to perform a highly sensitive acceleration measurement.
  • Most ESP / RSP devices in today's trailers have acceleration sensors with a high enough sensitivity to detect even minor vibrations on the trailer.
  • these accelerometers are used during normal operation for braking interventions in the trailer, they can also be used for alarming during a parking phase. This presupposes that they are powered by an independent power source (e.g., accumulator) during parking.
  • These acceleration sensors are also able to safely detect vibrations in a standing trailer, such as those caused when entering the trailer by a human being.
  • Advantages of embodiments of the present invention thus include, in particular, the possibility of obtaining secure theft protection without additional expenditure.
  • the alarm system is also not visible from the outside, since it uses existing component or can be integrated into existing components and thus invisible built or implemented. This further increases deterrence against potential thieves.
  • it is possible to inform the driver or a control center or directly to a security service (for example the police) and, if necessary, request immediate assistance.
  • Fig. 1 shows a schematic representation of an alarm system for a vehicle trailer according to an embodiment.
  • the vehicle trailer includes an acceleration sensor (in the Fig. 1 not shown) adapted to detect vibrations on at least a portion of the vehicle trailer.
  • the alarm system includes a detection module 110 for detecting sensor signals 115 from the acceleration sensor and an analysis module 120 for analyzing the detected sensor signals 115 to detect entry or departure of the vehicle trailer based thereon and alerting by generating an output signal 125.
  • Fig. 2 11 shows a plan view of a vehicle trailer 50 with an ESP / RSP unit 200 that includes an acceleration sensor 60 and the detection and analysis module 110, 120.
  • the detection and analysis module 110, 120 may be implemented, for example, in a control unit of the ESP / RSP (eg by a corresponding programming). However, this is not mandatory. In other embodiments, other acceleration sensors may be used and / or the detection and analysis module 110, 120 may also be implemented in other control units.
  • the alarm system includes its own power supply 140, which powers the detection and analysis module 110, 120 independently of the tractor.
  • the alarm system is over one optional data link 150 to a tractor or other components such as a telemetry system or a vehicle information system (in the Fig. 2 not shown).
  • the power supply 140 is suitable for being able to read out the acceleration sensor 60 even when the trailer is stationary or decoupled, ie when the trailer is normally de-energized or disconnected from the power connection to the tractor (for example when it is parked alone).
  • the separate power supply 140 may include a buffer battery that provides voltage and power to the acceleration sensor 60 of the exemplary trailer ESP / RSP 200.
  • the buffer battery is sized to cover an average rest period of a long-distance truck. Such an average rest time is for example 11 hours, so that the buffer battery can be designed, for example, to supply the alarm system with energy for at least 11 hours.
  • the buffer battery can also provide enough power for at least 12 hours or at least 24 hours. It is also possible that the battery is sized larger, which makes it possible, for example, to ensure theft protection as well as for parked trailer for a long time. Therefore, in another embodiment, it is possible for the system to be energized for a significantly longer period of time (eg, up to a week or more).
  • a message via the data connection 150 upon detection of an unauthorized access, for example via the telemetry system installed in the trailer (for example an iTAP system).
  • the telemetry system installed in the trailer for example an iTAP system.
  • FIG. 12 shows a side view of the vehicle trailer 50 with the exemplary ESP unit 200.
  • the person 500 enters and / or moves to excite vibrations 70a, 70b along, for example, the bottom surface of the vehicle Trailer 50 can spread in both directions.
  • a first mode of vibration 70a may propagate toward the tractor, while another mode of vibration 70b may propagate counter to it.
  • the vibration modes 70 Due to the geometry and the reflections occurring, the vibration modes 70 have a specific pattern. This pattern is characteristic of the movement of the person and / or the respective trailer and can be used to determine the entry of the trailer 50.
  • the sensed oscillations Upon entering the trailer 50, the sensed oscillations typically initially exhibit a greater rash (a vibratory pulse), which may be caused by, inter alia, caused by the extra mass of unauthorized persons.
  • the walking of the person may thereafter generate a periodic pattern, where each step will, for example, show itself in a typical vibration excitation, which may be detected by the acceleration sensor 60 as it is present in the exemplary ESP / RSP unit 200. Further details are explained below.
  • two or more independent sensors 200, 300 are utilized so that the signal from two or more sources can be used to detect unauthorized entry.
  • CAN controller area network
  • one or more pressure sensors 300 can be used to determine, for example, that the total mass of the charge has changed. This would also indicate an entry by an unauthorized person 500.
  • the data / results can also be linked together. For example, if a change in the load mass is detected and, in addition, there are signals from acceleration sensors, it is possible to detect the entry of the cargo area with increased reliability, i. the existing redundancy significantly increases the detection accuracy.
  • the algorithm that evaluates the acceleration sensor 60 is realized as follows, for example.
  • the periodic excitation when entering the trailer surface should normally be in the lower Hz range.
  • the previously uniquely high acceleration should have a certain direction, since the extra weight of the person 500 who enters the trailer deflects the trailer accordingly. Therefore, for example, the algorithm for evaluating the data of the acceleration sensor 60 can be carried out such that periodically occurring signals are detected with an absolute acceleration, which are greater than a threshold value. For example, all accelerations below this threshold can be ignored. This simultaneously leads to a saving of energy, so that the operating time for the buffer battery 140 can be extended accordingly. If the acquired acceleration data also relate to a limit number, then it can be assumed that a person 500 commits the trailer 50. On the other hand, if only occasional events have been detected, this could also have been triggered by the wind or by a passing car.
  • the threshold value is a measure for adjusting the sensitivity of the system.
  • the parameters can in particular be adapted to the type of event that the alarm system is to trigger.
  • Fig. 4 shows an example of such a vibration pattern that can be detected by the alarm system.
  • the corresponding excitation by the acceleration sensor 60 may be detected as an acceleration pulse 71.
  • the first (or second or third) detected vibration pulse can be used to activate the alarm, ie the alarm is switched to the operating mode.
  • this trigger pulse 71 may be defined by having its amplitude greater than a certain threshold, which in this example has a value x.
  • the threshold x was chosen so that if it is exceeded, entering the trailer 50 is likely.
  • the size of the threshold x hangs However, depending on the specific circumstances (including the trailer itself or the cargo) and can be determined accordingly, for example, by tests.
  • the unauthorized person 500 when moving in the vehicle trailer 50, will cause periodic vibration pulses. These vibration pulses 72, 73, 74, 75,... Can be sequentially detected by the detection module 110.
  • the alarm system 120 may first wait for the initial oscillation pulse 71 to activate the alarm 120 evaluation electronics. This ensures that no inadvertent alarms, such as those caused by passing vehicles, are triggered. Only when a vibration pulse with the predetermined minimum amplitude x is detected by the acceleration sensor 60, the system triggers the further detection and the evaluation of the subsequent vibrations 72,73, ....
  • a time period y can be defined within which a predetermined number of oscillations 72, 73,... Are required for alarming, wherein the predetermined number of oscillations 72, 73, should be above the threshold x. Therefore, in further embodiments, only when this further criterion is present, an alarm signal 125, which indicates an entry of the vehicle trailer 50 by an unauthorized person 500, issued.
  • an alarm is triggered even if the limit value x is exceeded once. This can be done especially when other factors make it very likely to occur (e.g., an increase in weight of the load by an amount of at least 50 kg).
  • an alarm may be triggered immediately, which alarm may be both audible and / or visual, or may be transmitted as a message to a person to be alarmed (eg, to the driver).
  • contact with an existing information system may also be performed.
  • an existing information system e.g., a vehicle information system or the so-called iTAP
  • the driver can be informed when a detection of unauthorized entry has taken place.
  • the alarm system allows a power saving mode by a corresponding electronic circuit.
  • the alarm system in the normal state, the alarm system operates permanently in the low-power mode and is activated only on a clear signal.
  • the energy-saving mode can be used, for example, if the trailer does not hang while driving on a vehicle.
  • a trigger or an activation could be triggered that activates the entire electronics (operating mode).
  • a control module can be provided that operates the alarm system in one of the two modes.
  • amplitude analysis it is also possible to perform an amplitude analysis to see if the amplitudes of the detected acceleration values are constant or nearly constant (or moving in a certain bandwidth). For example, people create typical, similar vibrational excitations, the detection of which indicates that a person is moving on the trailer. A decreasing amplitude is present, for example, when a single external excitation occurs, which then subsides. Such suggestions arise, for example, when entering the loading area or when jumping off the loading area.
  • Another advantage relates to the possibility of taking appropriate countermeasures depending on the application after detection of unauthorized entry.
  • These countermeasures can be triggered, for example, by other systems and include, for example, a notification of the driver or the police but also measures such as switching on the light or the horn of the vehicle or, depending on how much energy and which connection is currently available, a combination of these individual measures.
  • Fig. 5 shows a flowchart for a method for alerting for unauthorized entry of a vehicle trailer according to an embodiment of the present invention.
  • the method includes the steps of detecting S110 of sensor signals 115 from the acceleration sensor 60, analyzing S120 of the detected sensor signals 115 to identify entry or departure of the vehicle trailer 50 based thereon, and generating S130 an output signal 125 to enable alerting.
  • the method may also be implemented on a controller of the vehicle or trailer 50 (e.g., in the ESP / RSP controller 200) in the form of software that allows the data from the acceleration sensor 60 or other sensors to be read and evaluated accordingly.
  • a controller of the vehicle or trailer 50 e.g., in the ESP / RSP controller 200
  • the form of software that allows the data from the acceleration sensor 60 or other sensors to be read and evaluated accordingly.
  • Embodiments therefore also include a storage medium having a computer program stored thereon and configured to cause a device (e.g., the alerting system) to execute the previously described method when running on a processor (processing unit).
  • the storage medium may be a machine-readable medium including mechanisms for storing or transmitting data in a form readable by a machine (e.g., a computer).
  • the device may, for example, be a control module with a processor running the computer program
  • the software or algorithm can also detect from the signals of the acceleration sensor 60, whether someone is in the trailer or if it is only external disturbing factors. Therefore, using appropriately programmed software, it is possible to distinguish external disturbances from those caused by a walking human being.
  • the external disturbances include, for example, vibrations from passing persons Vehicles or other disturbing influences that cause a specific vibration pattern in the acceleration sensor 60.
  • the software is also capable of triggering an action only when the vibrations continue for a definable oscillation time interval y and / or when a threshold value x is exceeded. Thus, random false detections over time are eliminated and only tours of the trailer 50 give a true positive signal.
  • the algorithm is designed so that it can detect via the CAN signal available in the trailer whether the trailer is traveling. When the trailer is running, the detection is switched off.

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  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
EP16202560.5A 2015-12-10 2016-12-07 Système d'alarme pour une remorque de véhicule et procédé d'avertissement Not-in-force EP3179457B1 (fr)

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DE102015121478.4A DE102015121478A1 (de) 2015-12-10 2015-12-10 Alarmsystem für einen Fahrzeuganhänger und ein Verfahren zum Alarmieren

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EP3179457B1 EP3179457B1 (fr) 2019-11-20

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Cited By (6)

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CN107274613A (zh) * 2017-06-19 2017-10-20 中国人民解放军装甲兵工程学院 一种基于压电电缆振动信号的运动体识别方法
CN111415119A (zh) * 2020-03-25 2020-07-14 杭州公路工程监理咨询有限公司 全过程跟踪试验的智慧外委方法及其系统
CN112885148A (zh) * 2021-02-09 2021-06-01 深圳前海车米云图科技有限公司 一种高速公路紧急停车预警方法及系统
DE102020110921A1 (de) 2020-04-22 2021-10-28 HELLA GmbH & Co. KGaA Diebstahlwarnsystem für einen Anhänger oder Träger eines Kraftfahrzeugs, Kraftfahrzeug mit Diebstahlwarnsystem sowie Verfahren zur Diebstahlwarnung
WO2024068472A1 (fr) * 2022-09-28 2024-04-04 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Utilisation d'un signal de hauteur de conduite réelle et/ou d'un signal de pression réelle d'une commande de hauteur de conduite automatique d'un véhicule à suspension pneumatique
DE102024107899A1 (de) * 2024-03-20 2025-09-25 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Überwachen einer Kraftfahrzeug-Anhängefahrzeug-Kombination, Computerprogramm und/oder computerlesbares Medium, Datenverarbeitungsvorrichtung und Kraftfahrzeug

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DE102020131078A1 (de) 2020-11-24 2022-05-25 THEFTEX GmbH Verfahren zur detektion eines unbefugten betretens oder entladens einer ladefläche und gerät zur durchführung des verfahrens

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN107274613A (zh) * 2017-06-19 2017-10-20 中国人民解放军装甲兵工程学院 一种基于压电电缆振动信号的运动体识别方法
CN111415119A (zh) * 2020-03-25 2020-07-14 杭州公路工程监理咨询有限公司 全过程跟踪试验的智慧外委方法及其系统
CN111415119B (zh) * 2020-03-25 2023-08-11 杭州公路工程监理咨询有限公司 全过程跟踪试验的智慧外委方法及其系统
DE102020110921A1 (de) 2020-04-22 2021-10-28 HELLA GmbH & Co. KGaA Diebstahlwarnsystem für einen Anhänger oder Träger eines Kraftfahrzeugs, Kraftfahrzeug mit Diebstahlwarnsystem sowie Verfahren zur Diebstahlwarnung
CN112885148A (zh) * 2021-02-09 2021-06-01 深圳前海车米云图科技有限公司 一种高速公路紧急停车预警方法及系统
WO2024068472A1 (fr) * 2022-09-28 2024-04-04 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Utilisation d'un signal de hauteur de conduite réelle et/ou d'un signal de pression réelle d'une commande de hauteur de conduite automatique d'un véhicule à suspension pneumatique
DE102024107899A1 (de) * 2024-03-20 2025-09-25 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Überwachen einer Kraftfahrzeug-Anhängefahrzeug-Kombination, Computerprogramm und/oder computerlesbares Medium, Datenverarbeitungsvorrichtung und Kraftfahrzeug
DE102024107899B4 (de) * 2024-03-20 2025-10-30 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Überwachen einer Kraftfahrzeug-Anhängefahrzeug-Kombination, Computerprogramm und/oder computerlesbares Medium, Datenverarbeitungsvorrichtung und Kraftfahrzeug

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DE102015121478A1 (de) 2017-06-14

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