CN102020149B - Elevator system - Google Patents
Elevator system Download PDFInfo
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- CN102020149B CN102020149B CN201010237258.5A CN201010237258A CN102020149B CN 102020149 B CN102020149 B CN 102020149B CN 201010237258 A CN201010237258 A CN 201010237258A CN 102020149 B CN102020149 B CN 102020149B
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Abstract
The invention discloses an elevator system which can detect regions where passengers are able to enter and exit an elevator, as so called elevator door region. The elevator system herein comprises two position detection sensors (1, 2) which are arranged on the side of the of an elevator car (100) and arrange a distance in lifting direction as prescribed, and are disposed opposite to the side of elevator hall; a current position memory apparatus indicating current position of the elevator car, whether it is within the elevator door region or outside of the elevator door region. Once the elevator system receives an output from any of the two position detection sensors (1, 2), the determined result from the said procedure is reversely stored. The invention can further simplify mounting, repairing, and detection, and at the same time can give an accurate measurement of the position of the elevator car. Even in cases when large vibration occurs due to long-period earthquake, long-size members will not hook objects to be detected, thereby increasing safety of the elevator system.
Description
Technical field
The present invention relates to a kind of elevator device with lift car position detecting device, be particularly useful for when lift car is elevated detect stop position or judge lift car whether be positioned at elevator door zone within occasion.
Background technology
In the position detecting device of existing elevator, by setting position detecting sensor on the elevator car, near floor, detected body is set, when lift car is elevated, contraposition is carried out to the position of the position of the floor of lift car and the floor of elevator lobby, and the region being called as " elevator door zone " is detected, should " elevator door zone " represent whether the position of lift car reaches elevator cab door and elevator hall door can the position of opening and closing.
In addition, the stop detector that photo-electric is set in the end side of the threshold being arranged on the elevator cab door in lift car is also there will be a known as prior art, the stop detector of this photo-electric is towards side direction utilizing emitted light in the operating space of regulation of lift car, and the action when receiving light.
Patent documentation 1 Japanese Patent Laid-Open 2004-224529 publication
In the above prior art, in order to locate accurately between the floor of elevator lobby and the floor of lift car, must adjustment operation be carried out, and installation exercise and maintenance examination operational difficulty, there is time-consuming problem.
In addition, in the elevator device described in patent documentation 1, owing to carrying out the installation exercise of detected body relative to this absolute localization criteria of elevator lobby, so do not need to carry out adjustment operation to detected body, but because detected body is projected in hoist trunk, when there occurs the situations such as long period earthquake, main hoist cable and the isometric size members of speed regulator rope may be hooked this detected body and cause elevator to stop.
Summary of the invention
The present invention makes to solve problem existing in above-mentioned prior art, the object of the invention is to simplify installation exercise and maintenance examination operation further, the position of lift car can be detected exactly simultaneously, even if cause large vibration because of long period earthquake etc., long size members also can not hook detected body, thus can improve the safety of elevator device further.
To achieve these goals, the invention provides a kind of elevator device, described elevator device detects elevator door zone, the position of described elevator door zone domain representation lift car arrive elevator cab door and elevator hall door can the lifting position of opening and closing and passenger can the region of elevator up and down, described elevator device has: 2 position-detection sensors, described 2 position-detection sensors are arranged on described lift car side, and on lifting direction, separate the distance of regulation, and arrange relatively with elevator lobby side; And current location memory storage, within the current location that described current location memory storage stores described lift car is positioned at described elevator door zone or the judged result be positioned at beyond described elevator door zone, described elevator device when obtaining from any one position-detection sensor in described 2 position-detection sensors exporting, the described judged result that is stored in described current location memory storage of reversing.
(invention effect)
According to the present invention, a kind of elevator device with lift car position detecting device can be obtained, in this elevator device, the position relative with elevator lobby side is provided with and is being elevated 2 position-detection sensors direction separating predetermined distance, when elevator device obtains exporting from any one sensor, within the expression lift car that stores of reversing is positioned at elevator door zone or the judged result be positioned at beyond elevator door zone, the position of lift car positively can be detected thus, even if make building cause large vibration because of long period earthquake etc., long size members also can not hook detected body, thus the safety of elevator device can be improved further.
Accompanying drawing explanation
Fig. 1 is the diagram of block representing an embodiment of the present invention.
Fig. 2 represents the elevator lobby threshold of an embodiment and the block diagram of lift car threshold.
Fig. 3 is the diagram of block of the safety governor representing an embodiment.
Fig. 4 is the instruction diagram of the state variation of the safety governor representing an embodiment.
Fig. 5 is the instruction diagram of the elevator door zone area recognition method representing an embodiment.
Fig. 6 is the diagram of circuit of the elevator door zone area recognition method of an embodiment.
Fig. 7 is the diagram of block representing other embodiments of the present invention.
Fig. 8 represents the elevator lobby threshold of other embodiments and the block diagram of lift car threshold.
Fig. 9 is the diagram of block of the safety governor representing other embodiments.
Figure 10 is the instruction diagram of the elevator door zone area recognition method representing other embodiments.
Figure 11 is the diagram of circuit of the elevator door zone area recognition method of other embodiments.
Figure 12 is the diagram of block of the safety governor representing another other embodiments.
Figure 13 is the diagram of circuit of the elevator door zone area recognition method of another other embodiments.
Figure 14 is the diagram of block of the safety governor representing another other embodiments.
Figure 15 is the diagram of circuit of the elevator door zone area recognition method of another other embodiments.
Nomenclature:
1,2,21-position-detection sensor
4-safety governor
100-lift car
Detailed description of the invention
Be described referring to the embodiment of accompanying drawing to elevator device involved in the present invention.
(embodiment 1)
Fig. 1 is the integral structure figure representing an embodiment, Fig. 2 is the block diagram of peripheral part detailed construction representing elevator lobby threshold 102 and lift car threshold 103, Fig. 3 is the diagram of block representing safety governor 4, Fig. 4 is the state change map of safety governor, Fig. 5 represents the summary of elevator door zone area recognition method, and Fig. 6 is the diagram of circuit representing elevator door zone area recognition method.
In elevator, lift car 100 is connected with counterbalanced weight 112 by hoist cable 101, and between multiple floor, moves being formed in hoist trunk between floors.The movement of lift car 100 is carried out driving to carry out by electrical motor 106 pairs of rope sheaves 104.The electric power driven is supplied in electrical motor 106 by power inverter 107.In addition, electrical motor 106 is provided with coder isopulse generator 107, and the pulse produced when system controller 109 is by rotating electrical motor counts speed, equivalent position on the moving direction of lift car 100 in hoist trunk and the miles of relative movement etc. that calculate drive motor 106.Lift car 100 is provided with and engages with elevator hall door 110 and carry out the elevator cab door 111 of opening and closing.
Position-detection sensor 1 and 2 is arranged on lift car side, and the lifting direction being provided in lift car 100 separates the distance of regulation, and the respective output of described 2 position-detection sensors is separately connected with safety governor 4.Safety governor 4 identifies the elevator door zone region of opening and closing (elevator hall door and the elevator cab door can) detected respectively by each position-detection sensor, be judged as elevator door can opening and closing time, output enabling signal.In FIG, the Signals & Systems controller 109 of safety governor 4 connects, but in addition also can be arranged to be connected with the controller be arranged in lift car 100 or the controller be arranged in elevator lobby.
As shown in Figure 2, position-detection sensor 1 and 2 is configured to relative with elevator lobby side the position relationship of position-detection sensor 1 and 2 and elevator lobby side, and arranges with the distance that elevator door zone separates regulation accordingly.Position-detection sensor 1 and 2 can be as any one in the reflective photoelectric sensor, electrostatic capacitance sensor, Magnetic Sensor, eddy current sensor etc. of subtend type sensor.The threshold 102 of elevator lobby side detects as detected body by position-detection sensor 1 and 2.Detected body can be the works of elevator hall door, also can be to carry out by position-detection sensor the reflecting plate that detects.Safety governor 4 is microcomputer etc., is made up of the device 6 of the device 5 of position and the current location of storage lift car that judge lift car.
Fig. 4 represents the state variation of the position detecting system detecting elevator door zone, described state repeatedly changes between " lift car is positioned at beyond elevator door zone " and " lift car be positioned at elevator door zone within ", " lift car is positioned at beyond elevator door zone " represents that lift car 100 is in the state do not engaged with elevator hall door 110, namely represent that lift car 100 is between floor and floor, " lift car be positioned at elevator door zone within " represents that lift car 100 is in elevator hall door 110 state engaged, namely represent that lift car 100 is positioned on the position that flushes with floor face.
The change of state is undertaken by signal 12 and 13.Signal 12 and 13 produces when position-detection sensor 1 and 2 detects elevator lobby threshold 102, and the state of position probing is identified by safety governor 4 and manages.
Fig. 5 represents the position relationship between position-detection sensor 1 and 2 and elevator lobby threshold 102, is described below to the output state of position-detection sensor 1 and 2 under each state and the status recognition of safety governor 4.
(1) when position-detection sensor 1 and 2 is positioned at above elevator lobby threshold 102 simultaneously, safety governor 4 is by state recognition now and be stored as " lift car is positioned at beyond elevator door zone ", position-detection sensor 1 and 2 does not detect any detected body, and its output is all in OFF state.
(2) lift car moves downward from the state of (1), when position-detection sensor 2 detects elevator lobby threshold 102 and outputs ON, according to the output signal produced by position-detection sensor 2, the recognition result of safety governor 4 is rewritten as " lift car be positioned at elevator door zone within " this judged result from the reversion of stored " lift car is positioned at beyond elevator door zone " this current location.
(3) lift car moves further downward from the state of (2), when elevator lobby threshold 102 is between position-detection sensor 1 and 2, because position-detection sensor 1 and 2 does not detect elevator lobby threshold, the output state of described two position-detection sensors is OFF state, but come because state is now state variation from (2), so safety governor 4 is identified as within lift car 100 is positioned at elevator door zone.
(4) lift car moves further downward from the state of (3), when position-detection sensor 1 outputs ON because elevator lobby threshold 102 being detected, according to the output signal produced by position-detection sensor 1, recognition result is changed into " lift car is positioned at beyond elevator door zone " this recognition result by safety governor 4.
(5) when position-detection sensor 1 and 2 is positioned at the below of elevator lobby threshold 102 simultaneously, safety governor 4 makes " lift car is positioned at beyond elevator door zone " this judgement, position-detection sensor 1 and 2 does not detect any detected body, and its output state is OFF state.
Fig. 6 represents the contents processing implemented by safety governor 4.Safety governor 4 is microcomputer etc., and the contents processing of Fig. 5 carries out when the output signal of position-detection sensor 1 and 2 being detected.
The process of safety governor 4 starts (S100) when there occurs edge and interrupting, safety governor 4 judges whether interruption source is sensor 1 (S101), when being judged as YES position-detection sensor 1, enter step S102, when being judged as not being position-detection sensor 1 (interruption source is sensor 2), enter step S109.
Judge whether the current state of lift car 100 is positioned at (S102) beyond elevator door zone in step s 102, when being judged as being positioned at beyond elevator door zone, entering step S103, when being judged as being positioned within elevator door zone, entering step S106.In step s 103, current state due to lift car 100 is positioned at beyond elevator door zone, and interruption source is position-detection sensor 1, so can be judged as that the moving direction of lift car 100 is descent direction, after this, safety governor 4 is by confirming whether the process itself of sensor and controller has the abnormal reasonableness (S104) confirming judged result.
As confirming rational method in step S104, the moving direction of the lift car 100 such as detected by the pulse generator 107 be connected with electrical motor 106 is input in safety governor 4, described safety governor 4 to the information relevant to the moving direction of lift car detected by pulse generator and obtain in step s 103 and information that lift car 100 moving direction is relevant compare.The result compared represent there occurs abnormal time, safety governor 4 generates the output that elevator is stopped.The result compared represent do not produce abnormal time, stored current state is rewritten as " within elevator door zone " (S105) from " beyond elevator door zone " by safety governor 4.
In step s 102, if the current state of lift car 100 is not when being positioned at beyond elevator door zone, within judging that the current state of lift car 100 is positioned at elevator door zone, within the current state of lift car 100 is positioned at elevator door zone, and interruption source is position-detection sensor 1, so can judge that the moving direction of lift car 100 is ascent direction (S106).After this, carrying out the reasonableness identical with step S104 in step s 107 and confirm process, when being judged as not occurring abnormal, the current state of lift car being rewritten as " beyond elevator door zone " (S108).
If when being judged as that in step S101 interruption source is not position-detection sensor 1, being judged as that position-detection sensor 2 is interruption source (S109), after this carrying out the process identical with step (S102).In addition, Fig. 5 is an example of contents processing, as other process, can listing and first judge current state in S101, then carrying out according to each interruption source the method that processes respectively and by sampling action instead of the method etc. by interrupting confirming the state of position-detection sensor 1 and 2.
As mentioned above, the output signal produced when detecting detected body according to position-detection sensor 1 and 2, safety governor 4 switches and represents that lift car is the recognition result that the region of opening and closing (elevator door can) to be still positioned at beyond elevator door zone the region of opening and closing (elevator door can not) within being positioned at elevator door zone.Thus, compared with prior art can use the shorter tested drafting board of length or not use check-out console.Install and maintenance time thereby, it is possible to shorten, the situation that long size members hooks detected body can be avoided to occur.
(embodiment 2)
Fig. 7 is the integral structure figure representing other embodiments, Fig. 8 is the block diagram representing elevator lobby threshold 102 and lift car threshold 103 peripheral part detailed construction, Fig. 9 is the diagram of block representing safety governor 4, Figure 10 represents the overview again identified elevator door zone, and Figure 11 is the diagram of circuit of method when representing that safety governor 4 pairs of elevator door zone identify again.
Position-detection sensor 21 (the 3rd position-detection sensor) has been set up between position-detection sensor 1 and position-detection sensor 2, make such as have a power failure time or instantaneous power failure time, when safety governor 4 cannot keep the storage information relevant to current state, also again current state can be identified.
In addition, the device 7 producing the instruction of elevator car position affirmation mode being set in safety governor 4, by the signal etc. produced when power failure being detected, producing the instruction that elevator car position affirmation mode is started.
Referring to Figure 10, the identification again of current state is described.
When Figure 10 represents the storage of the current state in safety governor 4 indefinite or status recognition mal, (actual position of such as lift car is in elevator door zone, but when safety governor 4 is identified as " lift car is positioned at beyond elevator door zone "), make position-detection sensor 1, position-detection sensor 21 and the position-detection sensor 2 be arranged in lift car decline to detect the method for elevator lobby threshold 102, also illustrate the status recognition of safety governor 4 simultaneously.
(1) when position-detection sensor 1,21 and 2 is positioned at above elevator lobby threshold 102 simultaneously, the status recognition of safety governor 4 is " situs ambiguus of lift car ", position-detection sensor 1,21 and 2 does not detect any detected body, and it exports as OFF state.
(2) lift car moves downward from the state of (1), when position-detection sensor 2 detects elevator lobby threshold 102 and outputs ON, produce energizing signal by position-detection sensor 2, but the status recognition of safety governor 4 is still " situs ambiguus of lift car ".
(3) lift car moves further downward from the state of (2), when elevator lobby threshold 102 is between position-detection sensor 2 and 21, because position-detection sensor 1,21 and 2 does not detect elevator lobby threshold 102, so output state is OFF state, the status recognition of safety governor 4 is still " situs ambiguus of lift car ".
(4) lift car 100 moves further downward from the state of (3), when position-detection sensor 21 detects elevator lobby threshold 102 and outputs ON, by the energizing signal produced by position-detection sensor 21, the status recognition of safety governor 4 becomes " lift car be positioned at elevator door zone within ".Because the position-detection sensor 21 set up is between position-detection sensor 1 and position-detection sensor 2, and be defined as within elevator door zone between this position-detection sensor 1 and position-detection sensor 2, so when position-detection sensor 21 detects elevator lobby threshold 102, within the current location one of lift car 100 fixes on elevator door zone.
(5) when elevator lobby threshold 102 is between position-detection sensor 1 and 21, the status recognition of safety governor 4 is " lift car be positioned at elevator door zone within ", position-detection sensor 1 and 2 does not detect elevator lobby threshold, and it exports as OFF state.
Referring to Figure 11, the concrete contents processing again identified of current state is described.
In order to tackle when having a power failure or instantaneous power failure time safety governor 4 again cannot identify the situation of current state, in safety governor 4, be provided with elevator car position affirmation mode, it identifies the current location of lift car again according to following step.
When the current location information of lift car 100 be lost waiting because having a power failure, start elevator car position affirmation mode (S200, S201).In order to be confirmed the current location of lift car by position-detection sensor 21, lift car 100 is made to decline or rise (S202).Now, owing to being in the precarious position of not knowing lift car 100 current location from elevator device side, so consider safety, preferably moving velocity is set as low speed.
Lift car 100 is moved, until the response of position transduser 21 detected, after response position-detection sensor 21 being detected, enters step S204 (S203).In step S204, when position-detection sensor 21 detects detected body, the current state of lift car 100 is rewritten as " within being positioned at elevator door zone " by safety governor 4.
The reasonableness of carrying out current state confirms process (S205).This processing example as the output of position-detection sensor 1 or 2 still detected when output position-detection sensor 21 being detected, thus suspects that sensor carries out when may have occurred fault.Now, within the current location of lift car 100 is positioned at elevator door zone, so make lift car 100 stop immediately, passenger is speeded away lift car 100.
As mentioned above, the output produced when detected body being detected according to position-detection sensor 1 and 2, safety governor 4 switches and represents that lift car is the recognition result that the region of opening and closing (elevator door can) to be still positioned at beyond elevator door zone the region of opening and closing (elevator door can not) within being positioned at elevator door zone, when lost at the current location information of the lift car 100 of safety governor 4 when having a power failure etc. simultaneously, by using the position-detection sensor 21 set up between position-detection sensor 1 and 2, make the distance of a lift car 100 the longest movement floor, again can identify the current location information of lift car 100 thus, elevator can be made to resume operation rapidly.
(embodiment 3)
Figure 12 represents the constructional drawing of the safety governor 4 of another other embodiments, and Figure 13 is diagram of circuit.
In safety governor 4, diagnostic mode instruction generation device 8 has been set up as new function.According to diagnostic mode instruction, safety governor 4 is set to diagnostic mode, diagnoses position-detection sensor and safety governor etc. self.This diagnosis such as in the enforcement such as late into the night of elevator passenger rareness, or is implemented automatically in the mode of periodic inspection.
Referring to Figure 13, diagnostic mode is described.After diagnostic mode starts (S300), lift car is automatically moved to (S301) between floor and floor.After this, by stopping process making lift car 100 stop (S302), in order to diagnose, (S303) is once resetted to the current location information of lift car.The current location information of the lift car 100 before step S303 is temporarily transferred in lift car current location memory storage 6.Implement the treatment scheme in embodiment 2 in step s 304.When being judged as that each position-detection sensor does not occur abnormal by this process (S305-is), returning to normal condition, elevator being brought into operation (S306) again, after this terminates diagnostic mode (S307).When being judged as that any one sensor in each sensor there occurs abnormal (S305-is no), the generation (S308) of fault is notified to maintenance management personnel, and make elevator out of service, after this terminate diagnostic mode (S309).
As mentioned above, by setting up diagnostic mode in safety governor 4, the action that professional etiquette of going forward side by side is fixed, automatically can detect the exception of each position-detection sensor.
(embodiment 4)
Figure 14 is the constructional drawing of the safety governor 4 representing another other embodiments, and Figure 15 is diagram of circuit.
The signal 31 of input from the detector of the absolute location for detecting lift car is increased in controller 4.As the device of absolute location in the hoist trunk that detector preferably adopts the limit switch, opto-electronic pickup and the detected body etc. that detected by it that such as employ cam mechanism can detect lift car.
Referring to Figure 15, the concrete contents processing again identified of current state is described.In order to when tackling power failure and instantaneous power failure time etc. again can not identify the occasion of current state, in safety governor 4, be provided with elevator car position affirmation mode, it identifies the current location of lift car again according to following step.
When power failure etc. makes the current location information of lift car 100 lost, start elevator car position affirmation mode (S400, S401).Then, in order to be determined the current location of lift car by the detector 31 for detecting lift car 100 absolute location, lift car 100 is made to decline or rise (S402).After this, lift car 100 being moved, until the response of the detector 31 for detecting lift car 100 absolute location detected, after response detector 31 being detected, entering step S404 (S403).In step s 404, when detector 31 detects detected body, the current state of lift car 100 is rewritten as the location information obtained according to the position of detector by safety governor 4.Such as, when being provided with the cam type switch for detecting elevator sedan absolute position between floors, because the position of lift car is positioned at " beyond elevator door zone ", so current state is rewritten as " beyond elevator door zone " by safety governor 4.After this, the reasonableness of carrying out current state confirms process (S405).This processing example as also detected the output of position-detection sensor 1 or 2 thus suspecting that these sensors carry out when there occurs fault while the output detecting detector 31.Now, because the current location of lift car 100 is within elevator door zone, so make elevator stop immediately, and passenger is speeded away lift car 100.
As mentioned above, even if the current location information of lift car 100 of safety governor 4 lost when having a power failure etc., also the signal 31 of the detector from the absolute location for detecting lift car can be used, current location information in arbitrary position to lift car 100 identifies, so elevator can be made to resume operation rapidly.
Claims (4)
1. an elevator device, this elevator device detects elevator door zone, the position of described elevator door zone domain representation lift car arrive elevator cab door and elevator hall door can the lifting position of opening and closing and passenger can the region of elevator up and down, the feature of described elevator device is to have:
2 position-detection sensors, described 2 position-detection sensors are arranged on described lift car side, and on lifting direction, separate the distance of regulation, and arrange, described 2 position-detection sensors are used for detecting the detected body of described elevator lobby; relatively with elevator lobby side And
Current location memory storage, within the current location that described current location memory storage stores described lift car is positioned at described elevator door zone or the judged result be positioned at beyond described elevator door zone,
Described elevator device, when having described detected body between 2 described position-detection sensors, each described position-detection sensor is nd output state and within being judged to be that the current location of described lift car is positioned at described elevator door zone; When obtaining from any one position-detection sensor in described 2 position-detection sensors exporting, the described judged result be stored in described current location memory storage of reversing,
The 3rd position-detection sensor is provided with between described 2 position-detection sensors,
Described elevator device, when lost the current location information of lift car when elevator power failure, according to the output of the 3rd position-detection sensor judge the current location of described lift car be positioned at described elevator door zone within or be positioned at beyond described elevator door zone, thus again identify the current location information of lift car
The distance of described regulation is arranged accordingly with described elevator door zone,
The size of described detected body is less than the spacing distance between 3 position-detection sensors.
2. elevator device as claimed in claim 1, is characterized in that,
The threshold of elevator lobby side detects as detected body by described position-detection sensor.
3. elevator device as claimed in claim 1, is characterized in that,
This elevator device also has the pulse generator of the moving direction detecting described lift car,
Described elevator device to the information relevant to lift car moving direction obtained by described pulse generator and obtained by described position-detection sensor and information that lift car moving direction is relevant compare, when the result compared is inconsistent, elevator is stopped.
4. elevator device as claimed in claim 1, is characterized in that,
This elevator device has elevator car position affirmation mode, and described elevator car position affirmation mode makes described lift car be elevated, until described elevator device obtains exporting from any one position-detection sensor described 2 position-detection sensors.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-213931 | 2009-09-16 | ||
| JP2009213931A JP5055333B2 (en) | 2009-09-16 | 2009-09-16 | Elevator system |
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| Publication Number | Publication Date |
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| CN102020149A CN102020149A (en) | 2011-04-20 |
| CN102020149B true CN102020149B (en) | 2015-06-10 |
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| CN201010237258.5A Active CN102020149B (en) | 2009-09-16 | 2010-07-22 | Elevator system |
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| CN (1) | CN102020149B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014223954A (en) * | 2011-09-09 | 2014-12-04 | 三菱電機株式会社 | Elevator stop position detection device |
| CN103274267B (en) * | 2013-04-12 | 2015-04-29 | 快意电梯股份有限公司 | Outage position recognition device and protection method |
| CN106715310B (en) * | 2014-09-11 | 2019-06-28 | 奥的斯电梯公司 | Elevator drawing component wear and adaptive life monitor system based on vibration |
| JP6527117B2 (en) * | 2016-07-20 | 2019-06-05 | 株式会社日立製作所 | Elevator car position display device and car position display method |
| AU2018293703B2 (en) | 2017-06-27 | 2021-05-27 | Inventio Ag | Position-determining system and method for determining a car postion of a lift car |
| EP3556700A1 (en) * | 2018-04-20 | 2019-10-23 | Inventio AG | Lift system with a position measuring device and method for determining a position of an elevator car in a lift shaft |
| CN109132767B (en) * | 2018-10-29 | 2023-12-26 | 广东环境保护工程职业学院 | Car flat layer and position detection system |
| KR102018202B1 (en) * | 2019-04-01 | 2019-09-04 | 주식회사 한테크 | Safety elevation level adjustment system for elevators |
| CN111824881A (en) * | 2019-04-17 | 2020-10-27 | 天津大学 | Elevator safety protection system for detecting stop position of elevator car and detection method thereof |
| JP7132438B2 (en) * | 2019-07-02 | 2022-09-06 | 株式会社日立製作所 | elevator equipment |
| KR102535832B1 (en) * | 2021-01-07 | 2023-05-23 | 김경중 | attention device for elevator |
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| CN1492832A (en) * | 2001-02-23 | 2004-04-28 | EMT International 有限公司 | Device for detecting landing position of elevator car of elevator system |
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| JPS5882975A (en) * | 1981-11-12 | 1983-05-18 | 三菱電機株式会社 | Controller for elevator |
| JPH01231787A (en) * | 1988-03-11 | 1989-09-18 | Toshiba Corp | Device for controlling door open of elevator |
| JPH11314868A (en) * | 1998-04-28 | 1999-11-16 | Toshiba Elevator Co Ltd | Car load detecting device of elevator |
| JP3920528B2 (en) * | 2000-04-07 | 2007-05-30 | 株式会社日立ビルシステム | Elevator position detection device |
| JP2003095555A (en) * | 2001-09-25 | 2003-04-03 | Toshiba Elevator Co Ltd | Control device of elevator |
| JP2007112561A (en) * | 2005-10-19 | 2007-05-10 | Mitsubishi Electric Corp | Control device for elevator |
| JP2007254037A (en) * | 2006-03-20 | 2007-10-04 | Toshiba Elevator Co Ltd | Operation control device for elevator |
| JP4914257B2 (en) * | 2007-03-20 | 2012-04-11 | 株式会社日立製作所 | Elevator safety system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1492832A (en) * | 2001-02-23 | 2004-04-28 | EMT International 有限公司 | Device for detecting landing position of elevator car of elevator system |
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| Publication number | Publication date |
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| JP2011063354A (en) | 2011-03-31 |
| CN102020149A (en) | 2011-04-20 |
| JP5055333B2 (en) | 2012-10-24 |
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