CN100524604C - Interference compensation optically synchronized safety detection system for elevator sliding doors - Google Patents
Interference compensation optically synchronized safety detection system for elevator sliding doors Download PDFInfo
- Publication number
- CN100524604C CN100524604C CNB028301234A CN02830123A CN100524604C CN 100524604 C CN100524604 C CN 100524604C CN B028301234 A CNB028301234 A CN B028301234A CN 02830123 A CN02830123 A CN 02830123A CN 100524604 C CN100524604 C CN 100524604C
- Authority
- CN
- China
- Prior art keywords
- energy
- receiver
- energy intensity
- reflector
- intensity
- 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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
- B66B13/26—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between closing doors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
- H01J40/02—Details
- H01J40/14—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
Landscapes
- Elevator Door Apparatuses (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
A method for detecting interference energy in a sliding door safety system (10) comprising the steps of disposing at least one emitter (11) along a first vertical surface, disposing at least one receiver (17) corresponding to the at least one emitter along a second vertical surface, activating the at least one receiver, activating the at least one emitter to emit an energy beam (23) comprising a modulated square wave of a predetermined frequency, sampling an energy intensity received by the activated at least one receiver a predetermined number of times recording each time a received energy intensity to form a plurality of recorded energy intensities, selecting the lowest magnitude one of the plurality of recorded energy intensities to form a lowest recorded energy intensity, comparing the lowest recorded energy intensity to a threshold value and determining a source of the energy intensity to be external when the lowest recorded energy intensity is less than the threshold value.
Description
Background of invention
(1) invention field
The present invention relates to detect the energy interference in the optics synchronized safety detection system of elevator slide door and compensate the method that this class is disturbed.
(2) description of Related Art
In synchronous elevator detection of the optics that comprises discrete reflector and receiver array and safety system, the energy that is produced by a transmitter array generates by permanent order or pattern, and independent receiver is enabled or activated to receiver array according to the permanent order that reflector generates by expectation.When a receiver that is activated detects enough energy that transmitter array sends, then note one " connection " (forming) of the single bundle that is sampled by specific emitter and corresponding receiver thereof.Receiver array is stopped using enabled receiver then, and enables next receiver by scanning sequence.As long as each Shu Xianglian, this process just continues.The bundle that disconnects (for these bundles, single receiver detects less than emitted energy in the maximum latency of regulation) makes detection system, and signalling allows door reopen to door controller, because detect fault in the process of closing door.
A shortcoming of this class optics synchronous detecting system is, may have various exterior light energy or sources of electronic noise, and they may disturb the optics and the synchronizing function of scanning.If it is similar that the energy that these external sources produce is modulated into the energy of door safety system transmission, then external energy may be received by this system, and be taken as the scanning beam energy that produces by transmitter array, thereby make the receiver false transitions to checking next bundle in the scanning sequence.
This false transitions causes between transmitter array and the receiver array asynchronous, and the obstacle detection that leads to errors also makes the commutation of elevator door mistake.The stray light energy source comprises the fluorescence radiation system, the strobe light relevant with fire alarm system, and the signal lamp of first aid roof.The external pulse sources of electronic noise comprises relay-type electric life controller and electromechanical door operators.
Therefore need a kind of safety detecting system that is used for sliding door, it can guarantee true(-)running under the situation that pulsed electrical noise and light source (light that they produced is similar with the light that the safety detecting system that is used to scan produces) arranged.
Summary of the invention
Thereby, an object of the present invention is to provide a kind of detection be used for elevator slide door the optics synchronized safety detection system energy interference and compensate the method for this interference.
According to the present invention, the method that detects interfering energy in the elevator slide door safety system may further comprise the steps: settle at least one reflector along first vertical surface; Settle the corresponding receiver of at least one reflector of at least one and this along second vertical surface; Activate this at least one receiver; Activate this at least one reflector, to launch an energy beam that comprises the modulated square wave of preset frequency; The energy intensity that at least one receiver that is activated the is received pre-determined number of sampling, the energy intensity that record receives each time is to form many energy intensities of noting; Select minimum one of amplitude in these energy intensities that are recorded to form minimum record energy intensity; The record energy intensity that this is minimum and a threshold can determine then that when this minimum record energy intensity is lower than threshold value this energy intensity source is an external source.
According to the present invention, said method is further comprising the steps of: these received energy intensity that are recorded are carried out statistical analysis, when this energy intensity source originally was not confirmed as external source, determine the degree of consistency between each received energy intensity that writes down, if the degree of consistency is enough hanged down then the energy intensity source is decided to be external source.
According to the present invention, said method also comprises following additional step: with predetermined binary code modulation energy beam; The energy signal sampling pre-determined number that at least one receiver that is activated is received, the energy signal that record receives each time, forming many energy signals that write down, and there is predetermined binary code in checking at least one writing down of being sampled in the energy signal.
Description of drawings
Fig. 1 is for adopting an elevator slide door system schematic of the present invention.
Fig. 2 is the modulated square wave schematic diagram that is used for elevator slide door of the present invention system.
Fig. 3 is the modulated binary code square wave schematic diagram that is used for elevator slide door of the present invention system.
Detailed description of preferred embodiment
Referring to Fig. 1, drawn the transmitter array 11 of vertical layings of placing along the right door 21 of elevator slide door system 10 among the figure, with a receiver array 17 along the vertical laying of left-hand door 23 placements of elevator slide door system 10 with its coupling.Though those reflectors 11 and receiver 17 shown in the figure are positioned vertical, and be to be designed to transmit and receive many energy beams by predefined procedure, the present invention is not so limited.Just the opposite, the present invention be from broadly can comprising any and all reflectors and receiver configuration, and their become in parasitism, outside electromagnetic signal may be disturbed the environment of the energy beam that is launched to carry out safe scanning.
Shown one among the figure by single expression that activates the energy beam 23 of reflector 15 generations.In a kind of preferred embodiment, energy beam 23 comprises infrared (IR) energy.Single activation reflector 15 is switched on, and the receiver 17 that is in this reflector right opposite is activated and forms an activation receiver 13, and the latter is switched on and remains to until the signal that detects energy beam 23 always.After detecting energy beam 23, this activation receiver 13 is deactivated, and is activated by the next receiver 17 in the scanning sequence, becomes activation receiver 13 and received energy bundle 23.
When being switched on to become, next reflector 11 in the sequence activates reflector 15 and when the light path of activation receiver 13 does not get clogged, the next receiver 17 that will be activated in the energy beam 23 signal triggering sequences that received, and so on.This pattern is repetition to every pair of emitter/receiver.
Utilize the present invention, when the zone in the path of closing door is scanned with the searching barrier, adopt certain methods, this method to make safety system can distinguish that energy by the article in the detection access road of safety system generation obtains and by the difference of the energy of some external source generation.
In a preferred embodiment of the invention, each bundle is repeatedly sampled in each door scanning frame.Sample with assigned frequency to modulating with the energy of a continuous square wave flow transmission at every turn.Each bundle is sampled in succession, until predefined maximum times.The minimum radius sample value that obtains like this is exactly the value of physical holding of the stock and the beam intensity that is used as this bundle.If any moment does not detect energy in the specific bundle sampling process, then beam intensity is set to 0.After the sampling pre-determined number, with beam intensity and the predetermined threshold that stores.If the beam intensity that stores then can be confirmed the impulse type energy from external source less than predetermined threshold value.This is because pulse energy is different with the used frequency plot of sampling.Consequently at least one sample that obtains from pulse energy has low amplitude in sampling for several times.Utilize this method can omit the pulse energy that external source produces rapidly and easily.
In another embodiment of the present invention, each bundle is repeatedly sampled in each door scanning frame.Sampling was flowed for 21 (as shown in Figure 2) with the continuous square wave of assigned frequency the energy of transmission is modulated.Repeatedly sampling and pulse veto by top that simple embodiment is described carries out to.Yet, if can be defined as the energy that receives to come from the detection system outside to a specific bundle neither one sampling, then will each energy sampled that this bundle obtains be compared, to determine that detected energy is to represent the external energy signal to obtain, the real scan energy signal that still detected system produces.
If the energy discharge amplitude that each time sampling receives is inconsistent, can determine that then this energy is from the outside energy that receives of detection system, should be vetoed.If every sampled energy amplitude unanimity can determine that then energy is the real scan energy that is produced by detection system.In a preferred embodiment, the amplitude peak of all samplings departed from carry out computational analysis, determining each time sampling unanimity whether enough as a whole, thereby confirm that this received energy comes self-check system.But can carry out the consistency that any amount of statistical analysis form is determined each time sampling.
Also have among the embodiment in the present invention, each bundle is sampled repeatedly in the scanning frame of each.This sampling is to finish by the energy with as shown in Figure 3 specific binary code 31 modulation transmissions.After the amplitude of being sampled at every turn and sampling is measured, just can confirm will modulated received signal binary code.Repeatedly sample and the pulse rejection, such as mentioned above.But, if sampling causes " do not have and detect " to specific bundle neither one, then will the energy sampled of this bundle of obtaining be compared, be the signal that representative obtains the real scan energy that external energy or detected system produce to determine detected energy.If what each sampling received is can discharge amplitude inconsistent, or the binary modulated sign indicating number is not identified, and assert that then this received energy comes from the outside of safety system and vetoed.If the energy discharge amplitude unanimity of sampling, or binary code is at every turn confirmed, assert that then this energy is the actual scanning energy that is produced by detection system.
Obviously, the optics synchronized safety detection system that is used for elevator slide door provided by the invention can compensate interference, and it satisfies original target, measure and advantage of setting fully here.Though the present invention describes with reference to some specific embodiments, those skilled in the art understands after reading above-mentioned explanation that other alternative, modifications and variations can be arranged.Thereby can substitute those, modifications and variations are included in the broad range of following claims.
Claims (7)
1. method that detects interfering energy in the sliding door safety system may further comprise the steps:
Settle at least one reflector along first vertical surface;
Settle the corresponding receiver of at least one reflector of at least one and this along second vertical surface;
Activate described at least one receiver;
Activate described at least one reflector, comprise the energy beam of preset frequency modulated square wave with emission;
To the energy intensity sampling pre-determined number that described at least one receiver that is activated receives, the energy intensity that record receives each time is to form the energy intensity of a plurality of records;
Select a minimum record energy intensity that formation is minimum of amplitude in these energy intensities that are recorded;
With a described all time low energy intensity and a threshold; And
When being lower than threshold value, described all time low energy intensity determines then that this energy intensity source is an external source.
2. the method for claim 1 comprises following additional step:
Described a plurality of energy intensities that are recorded are carried out statistical analysis, when this energy intensity source originally was not confirmed as external source, determine the degree of consistency between each energy intensity that writes down, if the degree of consistency is enough hanged down then the energy intensity source is decided to be external source.
3. method as claimed in claim 2 comprises the additional step in order to predetermined binary code modulation energy.
4. method as claimed in claim 3 comprises following additional step:
To the energy signal sampling pre-determined number that at least one receiver that is activated receives, the energy signal that record receives each time is to form a plurality of energy signals that write down;
Verify that described predetermined binary code is present at least one energy signal of record that is sampled.
5. the method for claim 1 is wherein settled described at least one reflector to comprise along elevator door along first vertical surface and is settled described at least one reflector.
6. the method for claim 1 is wherein settled described at least one receiver corresponding with this at least one reflector to comprise along elevator door along second vertical surface and is settled described at least one receiver.
7. the method for claim 1, wherein said energy beam comprises infrared energy.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2002/041816 WO2004059692A1 (en) | 2002-12-31 | 2002-12-31 | Interference compensation optically synchronized safety detection system for elevator sliding doors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1720599A CN1720599A (en) | 2006-01-11 |
| CN100524604C true CN100524604C (en) | 2009-08-05 |
Family
ID=32679964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028301234A Expired - Fee Related CN100524604C (en) | 2002-12-31 | 2002-12-31 | Interference compensation optically synchronized safety detection system for elevator sliding doors |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1588397A4 (en) |
| JP (1) | JP4292159B2 (en) |
| KR (1) | KR100956728B1 (en) |
| CN (1) | CN100524604C (en) |
| AU (1) | AU2002358313A1 (en) |
| HK (1) | HK1087529A1 (en) |
| WO (1) | WO2004059692A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101277887B (en) * | 2005-08-08 | 2012-11-28 | 奥蒂斯电梯公司 | Method and system for communicating with elevator controller |
| GB2526071B (en) * | 2014-05-02 | 2018-05-23 | Ensota Ltd | A method of operating an automatic door installation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4823010A (en) * | 1987-05-11 | 1989-04-18 | The Stanley Works | Sliding door threshold sensor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6279687B1 (en) * | 1999-10-01 | 2001-08-28 | Otis Elevator Company | Method and system for detecting objects in a detection zone using modulated means |
| US6455839B1 (en) * | 2000-12-15 | 2002-09-24 | Prospects, Corp. | Obstacle detection sensor using synchronous detection |
| JP4917203B2 (en) * | 2000-12-27 | 2012-04-18 | オーチス エレベータ カンパニー | Method and system for detecting an object in a detection zone |
-
2002
- 2002-12-31 EP EP02792553.6A patent/EP1588397A4/en not_active Withdrawn
- 2002-12-31 KR KR1020057011029A patent/KR100956728B1/en not_active IP Right Cessation
- 2002-12-31 AU AU2002358313A patent/AU2002358313A1/en not_active Abandoned
- 2002-12-31 WO PCT/US2002/041816 patent/WO2004059692A1/en active Application Filing
- 2002-12-31 CN CNB028301234A patent/CN100524604C/en not_active Expired - Fee Related
- 2002-12-31 JP JP2004563169A patent/JP4292159B2/en not_active Expired - Fee Related
-
2006
- 2006-07-03 HK HK06107473.5A patent/HK1087529A1/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4823010A (en) * | 1987-05-11 | 1989-04-18 | The Stanley Works | Sliding door threshold sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1087529A1 (en) | 2006-10-13 |
| WO2004059692A1 (en) | 2004-07-15 |
| AU2002358313A1 (en) | 2004-07-22 |
| KR100956728B1 (en) | 2010-05-06 |
| CN1720599A (en) | 2006-01-11 |
| EP1588397A4 (en) | 2015-12-16 |
| JP2006512261A (en) | 2006-04-13 |
| EP1588397A1 (en) | 2005-10-26 |
| JP4292159B2 (en) | 2009-07-08 |
| KR20050091727A (en) | 2005-09-15 |
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