EP3994046A1 - Verfahren, vorrichtung und schienenfahrzeug - Google Patents
Verfahren, vorrichtung und schienenfahrzeugInfo
- Publication number
- EP3994046A1 EP3994046A1 EP20764008.7A EP20764008A EP3994046A1 EP 3994046 A1 EP3994046 A1 EP 3994046A1 EP 20764008 A EP20764008 A EP 20764008A EP 3994046 A1 EP3994046 A1 EP 3994046A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- video camera
- image data
- function control
- control element
- surroundings
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0081—On-board diagnosis or maintenance
Definitions
- the invention relates to a method and a device for operating a video surveillance system for a rail vehicle.
- the invention also relates to a rail vehicle with such a device.
- Rail vehicles for transporting people have monitoring systems that are used, for example, as digital video systems for recording a vehicle interior.
- Such a video system is usually connected to a data network in order to transmit the captured video signals. It is important to provide reliable and fail-safe video surveillance.
- One object of the present invention is to create a method and a device for operating a video monitoring system for a rail vehicle, which can each contribute to reliable video monitoring and safe operation of the rail vehicle.
- a method of operating a video surveillance system for a Rail vehicle to which a video camera and a function control element are assigned, which is designed to set up an optical function control of the video camera, acquisition of a measurement signal from the video camera that is representative of image data of the surroundings of a vehicle interior of the rail vehicle.
- the method further comprises determining image data of the surroundings of the vehicle interior as a function of the recorded measurement signal and activating the
- the method further includes checking a functional state of the video camera by means of the activated functional control element.
- a reliable and safe video monitoring of a vehicle interior of a rail vehicle can be implemented by means of the described method.
- the method enables an automated self-test to be carried out by a video camera and thus forms a useful method for function monitoring.
- the video monitoring system includes, for example, a digital video system for recording a vehicle interior of the rail vehicle, a so-called CCTV video monitoring system (closed circuit television).
- the video camera can therefore also be referred to as a CCTV camera.
- the functional element is a component of the video surveillance system that can be activated if required and that enables reliable function control of the video camera to be monitored.
- the function control element is designed as a further video camera or has one. Accordingly, activating the functional control element and checking the functional state of the video camera includes capturing a measurement signal from the additional video camera that is representative of image data of the surroundings of the vehicle interior of the rail vehicle in which the video camera is located. The method further comprises determining and providing further image data with information about the video camera as a function of the recorded measurement signal from the further video camera.
- the further video camera enables an optical external control of the video camera and is arranged, for example, in a vehicle interior of the rail vehicle in such a way that its field of view or recording area encompasses the video camera to be examined.
- the method can, however, also include a predefined alignment of the comprise further video camera, so that an associated recording area is aligned with the video camera.
- the further video camera is preferably designed as a relatively high-resolution camera and is arranged in the vehicle interior for monitoring or control of the camera adjacent to it. Such neighboring cameras can be used to determine by mutual observation whether modifications have been made to a housing or a lens cover of the video camera.
- the further video camera is positioned or set up in such a way that the video camera to be controlled is located in the surveillance cone of an adjacent video camera.
- the ambient light conditions provide sufficient brightness so that a relatively high magnification of the image data to be captured and a reliable statement about an external functional state of the video camera are possible.
- the function control element is designed as an infrared diode or has one.
- the infrared diode is assigned to the video camera and installed, for example, in a common housing with the video camera.
- the infrared diode is arranged at a distance from the video camera in the vicinity thereof, so that a detectable illumination of the recording area of the video camera can be set up by means of the infrared diode.
- activating the function control element and checking the functional state of the video camera includes illuminating the surroundings of the video camera by means of the infrared diode and acquiring a further measurement signal from the video camera, is representative of image data of the illuminated surroundings of the vehicle interior of the rail vehicle.
- the method further comprises determining further image data of the illuminated surroundings of the vehicle interior as a function of the recorded further measurement signal and comparing the determined image data of the surroundings and the determined further image data of the surroundings illuminated by means of the infrared diode.
- the comparison of the determined image data of the illuminated and the non-illuminated surroundings can in particular include determining contrast values so that contrast values are determined for the determined image data of the non-illuminated and contrast values for the determined further image data of the illuminated surroundings.
- the method according to such a development then further comprises a comparison of the determined contrast values of the determined image data and the determined further image data.
- the contrast values can be determined by means of an algorithm and include an analysis of existing areas and edges in the recorded image data.
- the other image data relate to the illuminated surroundings in the vehicle interior, the lighting being provided by means of the infrared diode.
- the image data determined by the video camera relate to a non-illuminated environment in the vehicle interior or an environment that was recorded without external lighting by means of an infrared diode.
- several infrared diodes or groups of infrared diodes can also be used in order to provide a higher luminosity and to provide reliable illumination of the surroundings of the video camera.
- the lighting function of the infrared diode is preferably designed to be switchable, so that, for example, a dynamic range, that is to say a range between dark and light, can easily be determined.
- a dynamic range that is to say a range between dark and light
- modern digital surveillance cameras are relatively sensitive with regard to their spectral recording capabilities, even in the infrared spectral range, so that a test option can be implemented using the method described that is no longer perceived as annoying by train attendants and travelers, because the human eye cannot for the corresponding frequency or wavelength ranges is sensitive.
- a functional test of the infrared diode itself can also be carried out.
- the functionality of the infrared diode can be checked easily and conveniently, for example with a mobile phone with a built-in camera, by pointing the camera of the mobile phone at the infrared diode and activating the infrared diode. Infrared spectral components can then be identified as "gray" light.
- a combination of a CCTV camera or video camera and a nearby infrared diode can be used to create a basic level of brightness in the vicinity of the video camera that contrasts with darkness or a dark environment, for example when it is switched off or switched off State, which enables an automated review of the video camera.
- a function test can in particular be carried out in such a way that the video camera first records an image without external lighting or with the infrared diode switched off and then another image with external lighting or with the infrared diode lighting switched on.
- the recorded images can then be compared with one another with and without infrared lighting. If there is no difference in terms of contrast or brightness within a specified tolerance range, it is very likely that there is a defect or functional impairment of the video camera or its optics. This applies, for example, if the optics of the video camera have been masked off.
- an automated self-test of a video camera for a rail vehicle can be carried out and a direct indication of the functionality or a functional failure of the video camera can be obtained.
- a service or diagnostic message can then be generated, which then leads to the verification of the specific video camera.
- this includes Checking a functional state of the video camera comparing the in cooperation with the
- Function control element determined further image data with stored data that include information about the video camera. In this way, specified standard values or threshold values can be included. If there is a deviation from such standard values or if a predetermined threshold value is exceeded or not reached, it can be concluded that the functional state of the video camera is not in accordance with its operation and a control or replacement can be initiated.
- the method includes outputting a notification signal as a function of checking the functional state of the video camera.
- the notification signal can in particular represent an alarm signal and can be output, for example, acoustically and / or optically in a driver's cab of the rail vehicle. For example, it is displayed on a control monitor in the driver's cab that a video camera has not passed a function test carried out according to the method described.
- the notification signal can trigger a type of trigger signal for a further function test.
- a trigger signal can cause an adjacent video camera in the vehicle interior to align itself with the video camera to be checked and to carry out an optical function check, as described above.
- Another aspect of the invention relates to a device for operating a video monitoring system for a rail vehicle, which is set up to carry out one of the methods described above.
- the device realizes, for example, a control or monitoring unit and is, for example, part of the video surveillance system.
- the device is, for example, a higher-level control device or a control unit of the rail vehicle, which enables signals and / or information from the video surveillance system to be processed.
- a server unit external to the rail vehicle can be set up to carry out one of the described methods.
- the server unit and the rail vehicle are then able to communicate with each other using signals.
- a rail vehicle has a car body and a video monitoring system which is coupled to the car body, the video monitoring system being assigned to a vehicle interior of the car body and having a video camera and a function control element.
- the function control element is designed to set up an optical function control of the video camera.
- the rail vehicle also has an embodiment of the device described above which is capable of providing a method for operating the video surveillance system perform. The device is signal-technically coupled to the video camera and the function control element.
- the rail vehicle has a device which is designed to carry out one of the previously described methods for operating the video surveillance system, the described properties and features of the method are also disclosed for the device and for the rail vehicle, and vice versa.
- Figure 1 is a schematic representation of a
- Figure 2 is a flow chart for a method for
- FIG. 1 shows a schematic side view of a rail vehicle 1 with a video monitoring system 10 which has a video camera 3 and at least one function control element 4, 5.
- the video surveillance system 10 is assigned to a vehicle interior 8 of a car body 2 of the rail vehicle 1 and enables the vehicle interior 8 to be monitored. It is implemented, for example, as a CCTV surveillance system which represents a self-contained video surveillance system.
- a method for operating the video monitoring system 10 enables a reliable and safe function control of the video camera 3 and can enable reliable video monitoring and make a contribution to increased safety of the rail vehicle 1.
- the video surveillance system 10 also has a control unit 6, which is coupled to the video camera 3 and the function control element 4, 5 in terms of signaling.
- the function control element 4, 5 is designed to set up an optical function control of the video camera 3.
- the function control element is implemented, for example, as an infrared diode 4, which is arranged adjacent to the video camera 3 in the car body 2.
- the functional element is implemented as a further video camera 5 or has one.
- an infrared diode can also be assigned to the further video camera 5, which, in analogy to the infrared diode 4 and the video camera 3, enables a functional check of the further video camera 5.
- the additional video camera 5 can also be monitored and controlled by means of the video camera 3.
- a method for operating the video surveillance system 10 and for performing a function test of the video camera 3 can be carried out in accordance with the flowchart shown in FIG be performed.
- a step S1 measurement signals from the video camera 3 are recorded and an image is recorded with the video camera 3 without external lighting or with the infrared diode 4 switched off.
- Step S2 further measurement signals from the video camera 3 are recorded and an image with external lighting or with the lighting switched on by the infrared diode 4 is recorded with the video camera 3.
- Steps S1 and S2 can also be carried out in a different order.
- a step S3 recorded images or the image data determined from the recorded measurement signals with and without infrared lighting are compared with one another. For example, a contrast and / or brightness ratio is examined and a check is made to determine whether or not the image data match within a specified tolerance range. If no or only a slight difference in relation to a contrast or a brightness is determined, there may be a high probability of a defect or a
- a warning signal can then be output if it has been recognized that there is a functional impairment of the video camera 3.
- the notification signal can for example be used as a visual alarm signal by means of a control monitor in a driver's cab
- Rail vehicle 1 are issued in order to inform the train driver about a non-operationally ready video camera.
- the notification signal can be provided as a trigger signal so that the video camera 3 is visually checked by means of the further video camera 5.
- an automated self-test of the video camera 3 for the rail vehicle 1 can be carried out and a direct indication of the functionality or a functional failure of the video camera 3 can be obtained.
- a service or diagnostic message can then be generated, which then leads to the checking of the specific video camera 3.
- Control unit of the rail vehicle 8 Vehicle interior of the rail vehicle 10 Video surveillance system
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Closed-Circuit Television Systems (AREA)
- Studio Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019213201.4A DE102019213201A1 (de) | 2019-09-02 | 2019-09-02 | Verfahren, Vorrichtung und Schienenfahrzeug |
| PCT/EP2020/072581 WO2021043546A1 (de) | 2019-09-02 | 2020-08-12 | Verfahren, vorrichtung und schienenfahrzeug |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3994046A1 true EP3994046A1 (de) | 2022-05-11 |
| EP3994046B1 EP3994046B1 (de) | 2025-10-01 |
| EP3994046B8 EP3994046B8 (de) | 2025-11-12 |
Family
ID=72266254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20764008.7A Active EP3994046B8 (de) | 2019-09-02 | 2020-08-12 | Verfahren, vorrichtung und schienenfahrzeug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3994046B8 (de) |
| DE (1) | DE102019213201A1 (de) |
| WO (1) | WO2021043546A1 (de) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3606052A1 (de) * | 2017-03-27 | 2020-02-05 | Hitachi Kokusai Electric Inc. | Zugbildüberwachungssystem |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4603603B2 (ja) * | 2008-07-24 | 2010-12-22 | 株式会社日立国際電気 | 録画転送装置 |
| DE102012222668A1 (de) * | 2012-12-10 | 2014-06-12 | Robert Bosch Gmbh | Vorrichtung zur Fahrzeugumfeldüberwachung |
| DE102014213456A1 (de) * | 2014-07-10 | 2016-01-14 | Continental Automotive Gmbh | Überwachen einer Signalübertragung von einer Aufnahmeeinrichtung zu einer Ausgabeeinrichtung |
| DE102016202620A1 (de) * | 2016-02-19 | 2017-08-24 | Siemens Aktiengesellschaft | Vorrichtung und Verfahren zum Überwachen eines räumlichen Bereichs, insbesondere in der Umgebung oder innerhalb eines Fahrzeugs |
| DE102017212953A1 (de) * | 2017-07-27 | 2018-08-16 | Siemens Aktiengesellschaft | Ermittlung von odometrischen Daten eines Schienenfahrzeugs mit Hilfe stationärer Sensoren |
| EP3517397A1 (de) * | 2018-01-30 | 2019-07-31 | Bombardier Transportation GmbH | Verfahren zur innenraumzustandsüberwachung, sowie fahrzeug mit einer innenraumzustandsüberwachungseinrichtung |
-
2019
- 2019-09-02 DE DE102019213201.4A patent/DE102019213201A1/de active Pending
-
2020
- 2020-08-12 WO PCT/EP2020/072581 patent/WO2021043546A1/de not_active Ceased
- 2020-08-12 EP EP20764008.7A patent/EP3994046B8/de active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3606052A1 (de) * | 2017-03-27 | 2020-02-05 | Hitachi Kokusai Electric Inc. | Zugbildüberwachungssystem |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021043546A1 (de) | 2021-03-11 |
| EP3994046B1 (de) | 2025-10-01 |
| EP3994046B8 (de) | 2025-11-12 |
| DE102019213201A1 (de) | 2021-03-04 |
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