EP1040073A1 - Safety device for escalators and moving walkways - Google Patents
Safety device for escalators and moving walkwaysInfo
- Publication number
- EP1040073A1 EP1040073A1 EP98950113A EP98950113A EP1040073A1 EP 1040073 A1 EP1040073 A1 EP 1040073A1 EP 98950113 A EP98950113 A EP 98950113A EP 98950113 A EP98950113 A EP 98950113A EP 1040073 A1 EP1040073 A1 EP 1040073A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- processors
- monitoring
- drive motor
- processor
- safety
- 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
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B29/00—Safety devices of escalators or moving walkways
- B66B29/005—Applications of security monitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B25/00—Control of escalators or moving walkways
Definitions
- the invention relates to a device for monitoring functional units on escalators and moving walks, consisting of a plurality of processors controlling the parameters of the respective functional unit that can be predetermined independently of one another.
- Escalators and escalators must be applicable domestic and foreign safety regulations so that they are automatically stopped before the speed exceeds, for example, 1.2 times the nominal speed. This requirement is taken into account by the known 3 monitoring devices based on shooters or their snipers, but the construction effort is considered to be too high.
- a control device for passenger conveyor systems has become known from US Pat. No. 5,526,256.
- a first and a second microcomputer are provided, the first microcomputer being operatively connected via switches to the safety elements responsible for starting the passenger conveyor system. The results are used to commission the passenger conveyor system.
- the second microcomputer monitors the behavior of the safety devices on the basis of their input signals. If one of the microcomputers fails, the passenger conveyor system ge not shut down, rather the second microcomputer takes over the functions of the first, which can result in considerable risks in the continued operation of the passenger conveyor system, since the error is not remedied but only relocated.
- the object of the invention is to provide a monitoring device for escalators and moving walks, which corresponds to today's technical possibilities and which compared to the St. d. T. is on the one hand much cheaper and on the other hand more powerful with a smaller size.
- the monitoring device should also be flexible in adapting to different domestic and foreign security standards. A shutdown of the passenger conveyor system should always be ensured in the event of problems.
- the processors are provided independently of one another for monitoring the drive motor for the steps or the pallets and / or the drive motor for the handrail (s) and in particular monitor the speed (s) of the drive motor (s) , wherein the processors are connected to safety contacts for immediate stopping of the passenger conveyor system, and that the processors are in operative connection with at least one further processor which is provided for the control and / or diagnosis of non-safety-relevant functional units.
- the principle of the monitoring device according to the invention is thus based on mutual monitoring of the processors, if necessary, based on the safety regulations applicable in Germany and abroad.
- This type of monitoring which has not yet been implemented in escalators and moving walks
- safety-relevant and on the other hand non-safety-relevant functional units correspond to the current technical status and also meet the relevant domestic and foreign safety standards, whereby problems occurring in the area of functional units and / or processors in any case lead to the shutdown of the passenger conveyor system.
- the construction effort is compared to the St. d. T. much cheaper.
- the monitoring device can be flexibly adapted to domestic and foreign safety regulations, the structural design remaining essentially the same with regard to stockpiling and, if appropriate, individual possible functions - adapted to the respective standard - are not active.
- the processors used to monitor the safety-relevant functional units are in operative connection with at least one further processor, which is provided, for example, for control and / or error diagnosis and can also be arranged on the same circuit board if required.
- At least two microprocessors are used to monitor the safety-relevant functional units, which in particular control the speed of the respective functional unit (drive motor steps / pallets / handrail). With two microprocessors, redundant monitoring of two speeds takes place, while four microprocessors can be used for speed monitoring of 2 x 2 speeds if required.
- Safety-related software is used, which can be used to cover the following parameters, among others:
- safety-related hardware consisting of at least 2 processors, corresponding to two channels (redundancy), in connection with a comparator channel via the software and control of the comparator.
- Failure monitoring for the downstream safety relays and for data transfer between the processors can also be implemented in a simple manner.
- the monitoring device responds and the escalator or moving walk is stopped, it should also be avoided that the escalator or moving walk can start again until the malpractice has not been thoroughly checked by specialist personnel.
- the software must therefore be able to implement a switch-on lock in the event of malfunctions, which can only be unlocked by the specialist personnel after the malfunction has been remedied.
- a so-called local peripheral bus can also be provided for expansion purposes.
- Fig. 1 control of an escalator with integrated motor guard
- Fig. 2 control of a moving walk with monitoring the main drive for the pallets and the handrail drive
- FIG. 4 Another alternative control of a moving walk Figure 1 shows a control system of an escalator (not shown here) with an integrated motor monitor as a basic sketch, which should meet the European standard.
- circuit board A The following components can be seen arranged on a circuit board A:
- the drive motor 1 for the steps of the escalator microprocessors 2, 3, for the safety-relevant speed monitoring of the drive motor 1, another microprocessor 4 for the control and diagnosis of non-safety-related escalator functions, for. B. the direction selection, which is in operative connection with a serial interface 5 for data exchange.
- the dashed line is only intended to indicate an optical separation of the functions monitoring (microprocessors 2, 3) and diagnosis or control (microprocessor 4). For production and functional reasons, these components are all arranged on the same board A, but are either only partially or completely put into operation in accordance with the applicable standard.
- a local peripheral bus 6 can optionally be provided for expansion purposes.
- sensors 7, 8 are arranged offset from one another, which measure 2 x the speed of the drive motor 1, for example on its output shaft, and convert them into corresponding digitally usable pulses, which are then transmitted via signal lines 9, 10 to the respectively responsible microprocessor 2 or 3 to provide.
- the microprocessors 2, 3 are connected to one another via further data lines 11, so that mutual monitoring is ensured.
- the microprocessors 2, 3 not only check themselves for locally occurring faults, but also check whether the Kroroprocessor 3, 2 supplied, in this example speed pulses are within the tolerance range.
- Reference numbers 12, 13 denote on the one hand the power supply of the so-called safety chain and on the other hand the power supply of the control itself.
- the microprocessors 2, 3 are operatively connected to the microprocessor 4 responsible for control and diagnosis via the data line 14.
- the contact 15, 16 of the safety relay (not shown here) is actuated via the microprocessor 2 or 3, which leads to the immediate escalation of the escalator. Furthermore, there are optocoupler inputs 17 which are connected to contacts 18, 19, 20 of further security elements 21, 22, 23, e.g. B. emergency stop contacts are connected.
- the microprocessor 4 is also still in operative connection with digital inputs 32 and digital outputs 33 for control tasks, for. B. that of an energy saving control.
- Figure 2 also shows a block diagram of the control of a moving walk, not shown, which should meet the US standards (ANSI).
- ANSI US standards
- the drive motor 1 is shown in connection with only one sensor 7.
- Two further electric motors 24, 25, to which sensors 26, 27 are likewise attached, serve to drive the handrail (not shown).
- Via signal lines 10, 28, 29, the drive motors 1, 24, 25 are operatively connected to two microprocessors 2 ', 3' for evaluating the safety-relevant signals.
- Another microprocessor 4 is connected to processors 2 ' , 3 ' via data line 14.
- the processor 3 ' can monitor other, likewise safety-relevant functional units of the moving walk, namely the handrail drive (s) 24, 25.
- the function of this control - with the exception of the extension - can be seen analogously to FIG. 1, the periphery also being identical.
- FIG. 3 shows a further alternative control, which represents a combination of FIGS. 1 and 2.
- Two microprocessors 2, 3 for monitoring the drive motor 1 and two microprocessors 3 ' , 3 " for monitoring the electric motors 24, 25 are provided for this purpose.
- the sensors 7, 8 are provided via corresponding signal lines 9, 10, 28, 29 , 26, 27. Connected to the respective processor.
- Processors 2, 3, 3 ' , 3 " are connected to the already mentioned microprocessor 4 via data lines 14 for the non-safety-related control and diagnosis of the passenger conveyor system.
- the periphery can be seen on this page analogously to Figures 1 and 2.
- the microprocessors 2, 3 are connected to contacts which, in the event of malfunctions, bring the escalator to an immediate stop.
- the processors 3 ' , 3 " interact with equivalent contacts 30, 31 which, in the event of problems occurring in the area of the handrail drives 24, 25 (for example if a handrail breaks), bring the escalator to an immediate stop.
- FIG. 4 shows a further alternative control, for example a moving walk.
- S other sensors are designated, which are provided in the mechanical tap area for the handrails and z. B. measure their speeds and provide these results as digital pulses via the signal lines 35, 36, 37, 38 to the microprocessors 2, 3.
- a further sensor 7, 8 is arranged in the area of the drive motor and is operatively connected to the respective processor 2, 3 via an associated data line 9, 10.
- processors 2, 3 monitor each other again.
- the other components, such as in particular the further microprocessor 4 in operative connection with functions corresponding to its periphery, which have already been described in the preceding examples.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19754141A DE19754141C2 (en) | 1997-12-04 | 1997-12-04 | Safety device for escalators and moving walks |
DE19754141 | 1997-12-04 | ||
PCT/EP1998/006422 WO1999029612A1 (en) | 1997-12-04 | 1998-10-09 | Safety device for escalators and moving walkways |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1040073A1 true EP1040073A1 (en) | 2000-10-04 |
EP1040073B1 EP1040073B1 (en) | 2002-02-06 |
Family
ID=7850954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98950113A Expired - Lifetime EP1040073B1 (en) | 1997-12-04 | 1998-10-09 | Safety device for escalators and moving walkways |
Country Status (8)
Country | Link |
---|---|
US (1) | US6230871B1 (en) |
EP (1) | EP1040073B1 (en) |
JP (1) | JP4695258B2 (en) |
CN (1) | CN1119277C (en) |
AT (1) | ATE212951T1 (en) |
DE (2) | DE19754141C2 (en) |
HK (1) | HK1031859A1 (en) |
WO (1) | WO1999029612A1 (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19849238C1 (en) * | 1998-10-26 | 2000-03-09 | O & K Rolltreppen Gmbh | Safety cut-out method for escalator or moving walkway has safety fault signals provided by safety chain combined with drive monitoring signals for operation of drive cut-out contacts |
DE10018887B4 (en) | 2000-04-14 | 2005-02-10 | Kone Corp. | Method and device for controlling the brake (s) of a passenger conveyor system |
DE10027490C2 (en) | 2000-06-02 | 2003-12-04 | Kone Corp | Safety device for escalators and moving walks |
US6267219B1 (en) * | 2000-08-11 | 2001-07-31 | Otis Elevator Company | Electronic safety system for escalators |
US7407048B2 (en) * | 2006-08-21 | 2008-08-05 | Kone Corporation | Safety switch and method of checked redundancy |
JP5344797B2 (en) * | 2007-03-13 | 2013-11-20 | 東芝エレベータ株式会社 | Remote monitoring system with variable function of escalator |
US7699157B2 (en) * | 2007-05-25 | 2010-04-20 | Rockwell Automation Limited | Safety arrangement |
JP5033529B2 (en) * | 2007-07-25 | 2012-09-26 | 株式会社日立ビルシステム | Passenger conveyor handrail driving force monitoring device |
DE102008009458A1 (en) * | 2008-02-15 | 2009-08-20 | Kone Corp. | Escalator or moving walkway |
CN101264843B (en) * | 2008-03-05 | 2010-06-02 | 上海中业电梯有限公司 | Escalator operation safety monitoring method and device |
JP5559305B2 (en) * | 2009-04-20 | 2014-07-23 | オーチス エレベータ カンパニー | Automatic adjustment of parameters for safety devices |
WO2010140274A1 (en) * | 2009-06-01 | 2010-12-09 | 三菱電機株式会社 | Control device for handrail drive device |
DE102012003178B4 (en) * | 2012-02-17 | 2018-03-22 | Kone Corp. | Device for monitoring the function of an escalator or moving walkway |
CN103224189A (en) * | 2013-03-18 | 2013-07-31 | 康力电梯股份有限公司 | Staircase and sidewalk safety monitoring system |
WO2015085527A1 (en) * | 2013-12-12 | 2015-06-18 | Otis Elevator Company | Safety system for use in a drive system |
DE102014117373A1 (en) | 2014-11-26 | 2016-06-02 | Thyssenkrupp Ag | elevator system |
FI125862B (en) * | 2015-01-28 | 2016-03-15 | Kone Corp | An electronic safety device and a conveyor system |
US10351392B1 (en) * | 2018-10-23 | 2019-07-16 | Otis Elevator Company | Escalator and moving walkway system with safety sensor |
DE102021215022A1 (en) | 2021-02-25 | 2022-08-25 | KSMA Karl-Heinz Sitzler Maschinen- und Anlagenbau GmbH | follower |
CN116768008A (en) * | 2022-03-08 | 2023-09-19 | 奥的斯电梯公司 | Safety chain device and safety protection system for escalator |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5556968A (en) * | 1978-10-19 | 1980-04-26 | Hitachi Ltd | System for controlling elevator rescue operation |
JP2609283B2 (en) * | 1988-05-09 | 1997-05-14 | 株式会社日立ビルシステムサービス | Passenger conveyor monitoring equipment |
JPH0729749B2 (en) * | 1989-07-21 | 1995-04-05 | 株式会社日立製作所 | Passenger conveyor control device |
JPH0747460B2 (en) * | 1990-03-02 | 1995-05-24 | 株式会社日立製作所 | Control device for passenger compare |
-
1997
- 1997-12-04 DE DE19754141A patent/DE19754141C2/en not_active Expired - Lifetime
-
1998
- 1998-10-09 EP EP98950113A patent/EP1040073B1/en not_active Expired - Lifetime
- 1998-10-09 AT AT98950113T patent/ATE212951T1/en active
- 1998-10-09 CN CN98811779A patent/CN1119277C/en not_active Expired - Lifetime
- 1998-10-09 DE DE59803041T patent/DE59803041D1/en not_active Expired - Lifetime
- 1998-10-09 WO PCT/EP1998/006422 patent/WO1999029612A1/en active IP Right Grant
- 1998-10-09 JP JP2000524218A patent/JP4695258B2/en not_active Expired - Fee Related
-
2000
- 2000-06-05 US US09/586,755 patent/US6230871B1/en not_active Expired - Lifetime
-
2001
- 2001-04-04 HK HK01102416A patent/HK1031859A1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9929612A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19754141A1 (en) | 1999-06-17 |
ATE212951T1 (en) | 2002-02-15 |
DE19754141C2 (en) | 2000-05-25 |
US6230871B1 (en) | 2001-05-15 |
JP2001525309A (en) | 2001-12-11 |
JP4695258B2 (en) | 2011-06-08 |
EP1040073B1 (en) | 2002-02-06 |
WO1999029612A1 (en) | 1999-06-17 |
CN1119277C (en) | 2003-08-27 |
CN1282305A (en) | 2001-01-31 |
DE59803041D1 (en) | 2002-03-21 |
HK1031859A1 (en) | 2001-06-29 |
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