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WO2016029246A1 - Système de sécurité à indicateur - Google Patents

Système de sécurité à indicateur Download PDF

Info

Publication number
WO2016029246A1
WO2016029246A1 PCT/AU2015/000512 AU2015000512W WO2016029246A1 WO 2016029246 A1 WO2016029246 A1 WO 2016029246A1 AU 2015000512 W AU2015000512 W AU 2015000512W WO 2016029246 A1 WO2016029246 A1 WO 2016029246A1
Authority
WO
WIPO (PCT)
Prior art keywords
machinery
exclusion zone
indicator
lighting
safety system
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.)
Ceased
Application number
PCT/AU2015/000512
Other languages
English (en)
Inventor
Geoffrey Scott WELLARD
Keith Robert RITCHIE
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.)
Commonwealth Steel Co Pty Ltd
Original Assignee
Commonwealth Steel Co Pty Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from AU2014903340A external-priority patent/AU2014903340A0/en
Application filed by Commonwealth Steel Co Pty Ltd filed Critical Commonwealth Steel Co Pty Ltd
Publication of WO2016029246A1 publication Critical patent/WO2016029246A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C15/00—Safety gear
    • B66C15/06—Arrangements or use of warning devices
    • B66C15/065—Arrangements or use of warning devices electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/003—Safety devices, e.g. for limiting or indicating lifting force for fork-lift trucks
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/08—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain
    • E02F3/12—Component parts, e.g. bucket troughs
    • E02F3/16—Safety or control devices
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • E02F3/26—Safety or control devices
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources

Definitions

  • An indicator safety system for use with plant or machinery is disclosed.
  • Moving and mobile machinery employed in, for example, manufacturing, construction and mining can present safety issues.
  • cranes are used in the construction industry for lifting and moving heavy materials and in the manufacturing industry for assembling heavy equipment.
  • machinery such as cranes and forklifts may be particularly dangerous to work with and around.
  • an indicator safety system for use with plant or machinery e.g.
  • moving/mobile machinery fixed machinery having moving parts or fixed machinery.
  • Plant is understood to include the environment around operating machinery, the space in a factory floor, construction zone etc., and can include the area surrounding factories (interior or exterior).
  • factories internal or exterior.
  • the indicator safety system may be used in alternative applications. For example, in any environment, or with devices, apparatus or systems having an area that may be designated or required to be an exclusion zone. Other applications will be discussed in more detail below.
  • the indicator safety system comprises lighting that indicates an exclusion zone with respect to the plant or the machinery.
  • the provision of an exclusion zone provides an alternative or additional solution to illumination or warning lights employed at plant or machinery.
  • the indicator safety system can thus visually indicate the exclusion zone so that users and individuals within the vicinity are able to visually perceive an unsafe (e.g. work) area. Users and individuals within the vicinity can then avoid that zone.
  • a plant is inherently a noisy environment and machinery is often used in an inherently noisy environment.
  • the visual indication of the exclusion zone presented by the lighting of the indicator safety system provides an effective, simply understood, and simple-to-recognise means to users and individuals within the vicinity, that is independent of prevailing levels of noise.
  • the lighting can be arranged with respect to the plant or the machinery so that the exclusion zone is in part determined by the geometry of the plant or the machinery. In some embodiments, the lighting can be arranged with respect to the plant or the machinery so that the exclusion zone is in part determined by a distance deemed unsafe in relation to the plant or the machinery. The lighting may also be in part determined by both the geometry of the plant or the machinery and the distance deemed unsafe in relation to the plant or the machinery. 'The distance deemed unsafe' is understood to mean the distance that is determined to be unsafe or risky to enter, move or work (e.g. within the 'line of fire') in relation to the plant or the machinery. Different plants and types of machinery may have varying size and shape exclusion zones and thus may also have varying unsafe, dangerous or hazardous distances for users to enter in proximity to the machinery.
  • the exclusion zone may be 2-dimensional and located on any surface.
  • the exclusion zone may, in relation to the plant or the machinery, be located on (e.g. projected onto) the ground, located on a wall, and/or located on a ceiling.
  • the exclusion zone may also be 3-dimensional.
  • the exclusion zone may be located on a set of stairs or up a ladder.
  • the lighting can be in the form of LED lights.
  • LED lights have a high and focused intensity that enables the exclusion zone to be easily identified or perceived by a user.
  • any suitable type of lighting may be used.
  • the lighting may define at least an outer margin of the periphery of the exclusion zone.
  • This embodiment is beneficial as it is designed to permit different degrees of safety to be visually represented and communicated to the users.
  • the outer margin may have a different light intensity to the interior of the exclusion zone.
  • the exclusion zone may be solely indicated by the outer margin.
  • the lighting can demarcate the exclusion zone by defining a distinct boundary. This embodiment is beneficial as it is designed to clearly mark the boundary of the exclusion zone.
  • the exclusion zone may be solely marked by the distinct boundary.
  • the lighting may also fill in the exclusion zone where the periphery is marked by either an outer margin of the illuminated zone, or by the distinct boundary.
  • the lighting can be selected to illuminate the exclusion zone red.
  • the colour red is advantageous as it generally (or intrinsically) signifies stop or warning.
  • the indicator safety system may also comprise a control indicator having an operative mode that indicates to users that the exclusion zone is safe to enter.
  • the control indicator may permit users to enter the exclusion zone (e.g. even when the exclusion zone is still being indicated).
  • the indicator safety system can be configured to control when and if users are permitted to enter the exclusion zone safely.
  • the control indicator may be operated by an operator who is able to determine when the plant or the machinery is safe to approach. This may be manual or automated.
  • control indicator may only be able to be placed in the operative mode when at least part of the machinery has been inhibited or disabled from functioning (e.g. from moving).
  • this allows for a redundant/failsafe system to ensure the safety of all users.
  • control indicator may be such that it may only be activated to the operative mode when the plant or the machinery is in a 'pre-determined position'.
  • the 'predetermined position' is understood to mean an area of the plant or a position of the machinery determined by the system, the machine or the operator to be safe for other users to approach the area of the plant of the machinery and, if necessary, to interact with the area of the plant or the machinery and/or the loads it is lifting, shifting or moving.
  • the control indicator may also comprise lighting that indicates that the exclusion zone is safe to enter.
  • the control indicator may provide an audible signal or a combination of visual and audible signals to indicate that the exclusion zone is safe to enter.
  • the control indicator may also be operative to appeal to a user's sense of touch, for example, using a vibration mechanism as the signal.
  • the control indicator may be in the form of switching off the lighting for the exclusion zone.
  • the lighting of the control indicator that indicates that the exclusion zone is safe to enter can be green.
  • the colour green is advantageous as it indicates (e.g. intrinsically) to users that they may proceed to approach the machinery.
  • the lighting of the control indicator may also be in the form of LED lights. As above, LED lights are beneficial as they have a high intensity which enables them to be highly visible.
  • the control indicator may alternatively be provided by changing the colour of the exclusion zone (e.g. from red to green).
  • the changed colour may be an indication to users only (and/or to everyone) that they may enter the exclusion zone (but e.g. with caution).
  • the method comprises the step of illuminating an exclusion zone with respect to the plant or the machinery.
  • the method can allow an operator to indicate a hazardous area in proximity to the plant or the machinery by a visual indicator.
  • a visual representation can be beneficial in inherently noisy environments.
  • the method may further comprise the step of ensuring all users remain outside of the exclusion zone.
  • the operator may clearly indicate the boundary of the exclusion zone, and optionally may vary this boundary, and also may control when and if users are able to safely enter the exclusion zone.
  • the step of illuminating the exclusion zone can occur while the plant or the machinery is operating. Typically, during normal operation, the exclusion zone will always be indicated.
  • the step of illuminating the exclusion zone can occur while the machinery is stationary or where there are no moving parts in the relevant area of the plant. For example, the exclusion zone may be illuminated while the machinery is powered 'on' and optionally 'off.
  • the step of illuminating the exclusion zone can occur while the plant or the machinery is operating, at least in part stationary and/or stationary.
  • the machinery may be 'on' but static and the exclusion zone may still be indicated.
  • the method may further comprise the step of allowing users into the exclusion zone.
  • this can allow the system and/or a machine operator to control when users enter the exclusion zone.
  • the machine operator may allow a user to enter the exclusion zone when the machine operator determines the exclusion zone is safe to enter.
  • the step of allowing users into the exclusion zone may be accomplished by providing a separate indication to that of the exclusion zone.
  • the method may further comprise inhibiting at least part of the plant or the machinery from functioning.
  • the separate indication may be in the form of a control indicator.
  • the control indicator may also employ lighting. In some forms, the lighting may be green.
  • Fig. 1 is a perspective view of an embodiment of an indicator safety system installed on a piece of machinery
  • Fig. 2 is a perspective view of a second embodiment of an indicator safety system installed on a piece of machinery
  • Fig. 3 is a perspective view of an embodiment of an exclusion zone
  • Fig. 4 is a perspective view of an embodiment of an indicator safety system installed on machinery. Detailed Description of the Drawings
  • the indicator safety system 10 comprises lighting 12 that indicates an exclusion zone 14 with respect to the plant or the machinery.
  • the indicator safety system 10 is generally used in relation to machinery, but is equally installable in any plant environment.
  • the indicator safety system 10 has particular application in inherently noisy environments where the location of all users are not easily identified or known.
  • the indicator safety system 10 is mounted to machinery, and the machinery is in the form of an excavator and mobile crane 16.
  • the excavator 16 includes an arm 18, a bucket 20, a body 22, an operator cab 24, and continuous treads 26.
  • the body 22 is rectangular and rotatably mounted on the continuous treads 26.
  • the arm 18 and the bucket 20 generally extend from the body 22.
  • the lighting 12 is mounted to the body 22 and in particular, is arranged about the periphery of the body 22. This lighting arrangement illuminates the exclusion zone 14.
  • the exclusion zone 14 is understood to be a hazardous area generally proximate the machinery 16.
  • the exclusion zone will generally be an area larger than the machinery 16 to allow the machinery to have a sufficient space to operate in.
  • the lighting 12 is arranged with respect to the machinery 16 so that the exclusion zone 14 is in part determined by the geometry of the machinery and/or is in part determined by a distance deemed unsafe in relation to the machinery.
  • the exclusion zone 14 generally corresponds to the geometry of the machinery 16 because it is the machinery itself and its movements during operation that are a safety risk for users.
  • the exclusion zone marks the boundary of the distance deemed safe in relation to the machinery 16. Users will understand that they are required to remain outside of the exclusion zone and thus the distance from the machinery classified as hazardous (i.e., the 'line of fire').
  • the lighting 12 extends about the periphery of the body 22 generally parallel to the ground to illuminate the exclusion zone 14.
  • the lighting 12 illuminates an area that is 3-dimensional, larger than the machinery that generally corresponds to the shape of the machinery. As the lighting 12 is mounted to the machinery 16 this allows for the exclusion zone 14 to move along the ground with the machinery 16 during operation.
  • the lighting may also be mounted to the operator cab 24, the arm 18 and/or the bucket 20.
  • the exclusion zone may be any suitable shape, size, length, width, or height etc.
  • the lighting 12 is in the form of LED lights. LED lights are advantageous as they are safe under all conditions of normal use, are highly visible, and clearly illuminate the exclusion zone 14.
  • LED lights are in the form of red LED lights illuminating the exclusion zone 14 red.
  • the colour red inherently indicates to users that the exclusion zone 14 is dangerous and they must stop and not enter the exclusion zone 14.
  • Fig. 1 also illustrates the system 10 including a control indicator 28 that has an operative mode which indicates to users that the exclusion zone 14 is safe to enter.
  • the control indicator 28 When the control indicator 28 is in the operative mode, at least part of the machinery is inhibited from functioning or is locked.
  • the machinery operator activates the control indicator 28 by putting it in the operative mode, the operator cab 24 and the body 22 are not able to rotate in relation to the continuous treads 26, and the arm 18, and the bucket 20 are prevented from being operated when they are at a correct height such that no further raise/lower functions are required for the task being performed.
  • the control indicator 28 indicates that users can enter the exclusion zone 14 if necessary.
  • the crane controls when used on a crane, are inter-engaged with the control indicator so that when the control indicator is activated in the operative mode the crane controls will not work and therefore the crane will not raise, lower or move until the control indicator is de-activated.
  • control indicator 28 is such that it is only able to be activated to the operative mode when the machinery 16 is in a pre-determined position.
  • the arm 18 and bucket 20 may be maintained at a position suitable for personnel to load/unload the bucket 20.
  • the bucket 20 is much safer to approach when the arm 18 is static therefore greatly reducing the risk of uncontrolled lowering of the bucket 20.
  • the control indicator 28 allows the equipment operator to control the exclusion zone 14 by giving users permission to enter the exclusion zone 14.
  • the control indicator 28 is highly visible to users and is positioned on top of the operator cab 24.
  • the control indicator 28 may be solely audible, a combination of visual and audible or any other suitable indicator that the users are able to perceive.
  • the control indicator 28 is also able to be not-activated. When the control indicator is not- activated, the control indicator 28 is 'off and the indicator lighting 12 illuminates the exclusion zone 14.
  • the control indicator may also be in the form of simply switching 'off the lighting for the exclusion zone.
  • control indicator 28 comprises lighting that indicates the exclusion zone 14 is safe to enter.
  • the lighting may be in the form of LED lights.
  • the LED lights are green.
  • the colour green inherently signifies safety to the users and that they may enter the exclusion zone 14.
  • the control indicator may be performed by changing the colour of the exclusion zone (e.g. from red to green).
  • the mobile crane 16 includes a jib 30, the body 22 and the operator cab 24.
  • the body 22 is rectangular and rotatably mounted on a main body.
  • the jib 30 generally extends from the body 22.
  • the lighting 12 is mounted to the body 22 and in particular, is arranged about the periphery of the body 22. This lighting arrangement illuminates the exclusion zone 14.
  • Fig. 2 is that the lighting 12 is mounted to the machinery 16 in a different arrangement, and as such the exclusion zone 14 is of a different shape and size in relation to the machinery 16.
  • the control indicator 28 is in the form of two lights positioned at the front and rear of the body 22 of the machinery 16.
  • the indicator safety system 10 is mounted to a machine simulator for an overhead crane. In alternative embodiments, the indicator safety system may be mounted to or installed on any type of machinery or in any environment having hazards. For example, the indicator safety system could be used to illuminate a floor trap or a doorway that is hazardous and unsafe to enter.
  • the lighting 12 defines at least an outer margin 32 of the periphery of the exclusion zone 14.
  • the outer margin 32 is formed by an area that has a length and a width in which the degree of intensity of the lighting is faded in relation to the interior of the zone 14.
  • the faded outer margin is able to represent different degrees of risk.
  • Figs. 1 and 2 illustrate embodiments where the lighting 12 demarcates the exclusion zone 14 by defining a distinct boundary. In all Figures, the lighting 12 also fills in the exclusion zone 14. However, it is understood that in non-illustrated alternative embodiments, the lighting is not required to fill in the interior of the exclusion zone and may solely illuminate the boundary or the outer margin of the exclusion zone.
  • Example 1 A method of safely operating the machinery of Figs. 1 or 2 was performed by an operator as follows. The method as performed included at least step 1 and optionally included steps 2 and 3.
  • the exclusion zone 14 was illuminated with respect to the machinery 16.
  • This step could occur while the machineryl6 was operating.
  • This step could occur while the machinery 16 was stationary.
  • the separate indication was, for example, able to take the form of a control indicator being activated to an operative mode.
  • the step of providing a separate indication to allow users into the exclusion zone was also able to include inhibiting at least part of the plant or the machinery from functioning.
  • the indicator safety system was able to be used in many alternative applications. Some examples of alternative applications were as follows.
  • lighting can be arranged on the side of a passenger train.
  • the lighting can indicate an exclusion zone onto the platform as the train enters the station.
  • the control indicator can be arranged to be activated to its operating mode when it is safe to get on and off the train. This application could be particularly useful during peak travel times.
  • Lighting could be arranged to designate an exclusion zone proximate the doors prior to doors closing.
  • the exclusion zone could be an indicator or warning for doors opening, vehicle movements etc.
  • Sporting applications to designate boundaries For example, a 10m zone rule in rugby/rugby league/soccer penalties.
  • Example 2 In the following illustrative example, the indicator safety system was mounted to a simulated crane. The exclusion zone lighting was in the form of 'Boundary Lighting', and the indicator was in the form of 'Controlled Approach Lighting'.
  • the arrangement of the lighting of the exclusion zone and, in some forms, the control indicator is adaptive given the layout of the environment, the operations, and the tasks required to be performed within this layout.
  • the indicator safety system enables users to safely interact with the plant or the machinery.
  • the exclusion zone is visible to all users, and in some forms, the control indicator is in its operative mode. Due to the inherently noisy environment in the construction and manufacturing industries, users are able to easily identify the exclusion zone in relation to the plant or the machinery and easily identify when they are able to approach the area of the plant or the machinery to allow sufficient time for adequate separation. In particular, the operator is able to give users permission to approach the area of the plant or the machinery by activating the control indicator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

Cette invention concerne un système de sécurité à indicateur (10) pour une installation ou un engin. Ledit système de sécurité à indicateur comprend un élément d'éclairage (12) qui indique une zone d'exclusion (14) par rapport à l'installation ou l'engin. L'invention concerne en outre un procédé assurant le fonctionnement fiable de l'installation ou de l'engin, consistant à éclairer une zone d'exclusion (14) par rapport à l'installation ou l'engin.
PCT/AU2015/000512 2014-08-25 2015-08-25 Système de sécurité à indicateur Ceased WO2016029246A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2014903340 2014-08-25
AU2014903340A AU2014903340A0 (en) 2014-08-25 Indicator Safety System

Publications (1)

Publication Number Publication Date
WO2016029246A1 true WO2016029246A1 (fr) 2016-03-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2015/000512 Ceased WO2016029246A1 (fr) 2014-08-25 2015-08-25 Système de sécurité à indicateur

Country Status (1)

Country Link
WO (1) WO2016029246A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018084084A (ja) * 2016-11-24 2018-05-31 大成建設株式会社 重機の安全装置
US10619397B2 (en) 2015-09-14 2020-04-14 Rytec Corporation System and method for safety management in roll-up doors
US20210340734A1 (en) * 2018-10-04 2021-11-04 Volvo Construction Equipment Ab Working machine comprising an illumination system
US11346141B2 (en) 2018-12-21 2022-05-31 Rytec Corporation Safety system and method for overhead roll-up doors
CN116888330A (zh) * 2021-03-31 2023-10-13 日立建机株式会社 工程机械
US11820634B2 (en) 2020-02-21 2023-11-21 Crown Equipment Corporation Modify vehicle parameter based on vehicle position information
US12404714B2 (en) 2015-09-14 2025-09-02 Rytec Corporation System and method for safety management in roll-up doors
CN120853324A (zh) * 2025-09-22 2025-10-28 广州海洋地质调查局三亚南海地质研究所 一种钻台安全管控系统

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US4818866A (en) * 1986-01-13 1989-04-04 Data Instruments, Inc. Intrusion detection system for operating industrial machines with variable sensitivity
US20120025964A1 (en) * 2010-07-27 2012-02-02 Beggs Ryan P Methods and apparatus to detect and warn proximate entities of interest
US20130201292A1 (en) * 2010-04-16 2013-08-08 Otto-Von Guericke-Universitat Magdeburg Device For Monitoring At Least One Three-Dimensional Safety Area
NZ616408A (en) * 2013-10-08 2015-03-27 Solar Bright Ltd A system for alerting a person or persons of a public transport hazard
DE102013225674A1 (de) * 2013-12-11 2015-06-11 Bombardier Transportation Gmbh Verfahren zur Darstellung von Informationen für Verkehrsteilnehmer über den Betrieb eines Schienenfahrzeugs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818866A (en) * 1986-01-13 1989-04-04 Data Instruments, Inc. Intrusion detection system for operating industrial machines with variable sensitivity
US20130201292A1 (en) * 2010-04-16 2013-08-08 Otto-Von Guericke-Universitat Magdeburg Device For Monitoring At Least One Three-Dimensional Safety Area
US20120025964A1 (en) * 2010-07-27 2012-02-02 Beggs Ryan P Methods and apparatus to detect and warn proximate entities of interest
NZ616408A (en) * 2013-10-08 2015-03-27 Solar Bright Ltd A system for alerting a person or persons of a public transport hazard
DE102013225674A1 (de) * 2013-12-11 2015-06-11 Bombardier Transportation Gmbh Verfahren zur Darstellung von Informationen für Verkehrsteilnehmer über den Betrieb eines Schienenfahrzeugs

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10619397B2 (en) 2015-09-14 2020-04-14 Rytec Corporation System and method for safety management in roll-up doors
US11236540B2 (en) 2015-09-14 2022-02-01 Rytec Corporation System and method for safety management in roll-up doors
US12404714B2 (en) 2015-09-14 2025-09-02 Rytec Corporation System and method for safety management in roll-up doors
JP2018084084A (ja) * 2016-11-24 2018-05-31 大成建設株式会社 重機の安全装置
US20210340734A1 (en) * 2018-10-04 2021-11-04 Volvo Construction Equipment Ab Working machine comprising an illumination system
US12091838B2 (en) * 2018-10-04 2024-09-17 Volvo Construction Equipment Ab Working machine comprising an illumination system
US11804114B2 (en) 2018-12-21 2023-10-31 Rytec Corporation Safety system and method for overhead roll-up doors
US11346141B2 (en) 2018-12-21 2022-05-31 Rytec Corporation Safety system and method for overhead roll-up doors
US11820634B2 (en) 2020-02-21 2023-11-21 Crown Equipment Corporation Modify vehicle parameter based on vehicle position information
US12116255B2 (en) 2020-02-21 2024-10-15 Crown Equipment Corporation Modify vehicle parameter based on vehicle position information
US12221330B2 (en) 2020-02-21 2025-02-11 Crown Equipment Corporation Lighting floor on sides of material handling vehicle to indicate limited or non-limited area
CN116888330A (zh) * 2021-03-31 2023-10-13 日立建机株式会社 工程机械
EP4317616A4 (fr) * 2021-03-31 2025-04-30 Hitachi Construction Machinery Co., Ltd. Engin de chantier
CN120853324A (zh) * 2025-09-22 2025-10-28 广州海洋地质调查局三亚南海地质研究所 一种钻台安全管控系统

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