CN107697761A - Elevator device - Google Patents
Elevator device Download PDFInfo
- Publication number
- CN107697761A CN107697761A CN201710660806.7A CN201710660806A CN107697761A CN 107697761 A CN107697761 A CN 107697761A CN 201710660806 A CN201710660806 A CN 201710660806A CN 107697761 A CN107697761 A CN 107697761A
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- CN
- China
- Prior art keywords
- car
- elevator
- power
- power supply
- brake
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
- B66B3/02—Position or depth indicators
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The present invention can foreshorten to elevator and operate required time again when power supply is from service restoration.Elevator device has：Position detection signal and the travel speed comprising the car and the code device signal of traveling-position based on the test position for being shown in the car lifted in elevator hoistways, calculate the car position computing device of the absolute position of the car；Control the elevator operation controller of elevator operating；Detect the power cut detection device for the power outage powered to car position computing device；Detect the presence of the releasing of brake detection means for implementing manual release brake action；And storage carries out the storage device of the testing result of releasing of brake detection means when power failure detects using power cut detection device, elevator operation controller can be with reference to the storage content of storage device in power up, can not obtain represent to implement the information of manual release brake action when, based on the absolute position of the car calculated using car position computing device, the operating of car is controlled.
Description
Technical field
The present invention relates to a kind of elevator device, and it has the electronic security(ELSEC) microcomputer for the absolute position for calculating car and control
The elevator controlling microcomputer of the operating of car.
Background technology
As the background technology of the art, Japanese Patent Laid-Open 2001-316054 publication (patent documents can be enumerated
1).A kind of lift appliance is recorded in the publication, wherein control device has：Safe microcomputer (the 1st operational part), it controls installation
Safety device in elevator；And elevator controlling microcomputer (the 2nd operational part), it controls the operating of elevator, and future, self installation existed
Limiter of speed code device signal (the 1st signal) input of limiter of speed encoder in the rotary shaft of bottom governor sheave is micro- to safety
Machine, safe microcomputer carries out calculation process to limiter of speed code device signal, and monitors speed, displacement and the traffic direction of car,
On the other hand, the motor encoder signal (the 2nd signal) of motor encoder of the self installation in future in the rotary shaft of traction machine is defeated
Enter to elevator controlling microcomputer, elevator controlling microcomputer carries out calculation process to motor encoder signal, and calculate car position and
Speed, control traction machine.
Prior art literature
Patent document
【Patent document 1】Japanese Patent Laid-Open 2001-316054 publications
The content of the invention
The technical problems to be solved by the invention
But if the lift appliance described in patent document 1 is wanted to utilize the car gone out by electronic security(ELSEC) Microcomputer Calculation
Absolute position, then the release brake and in the case where recovering afterwards when as power down mode, actual car position can be with
The car absolute position gone out by electronic security(ELSEC) Microcomputer Calculation occurs inconsistent.In order to avoid this problem, turning on/off every time
During power supply, it is necessary to car is run to end floor, then recovered, therefore the time needed for untill recovering can extend,
The service quality of elevator can reduce.
Therefore, during power up, operating electricity again can be foreshortened to after power failure it is an object of the present invention to provide one kind
The elevator device of time needed for untill ladder.
Solves the technical scheme of technical problem
In order to solve above-mentioned problem, elevator device of the invention, it is characterised in that have：Car position computing device, its
The position detection signal of test position based on the car for representing to lift in elevator hoistways and the traveling speed comprising the car
The code device signal of degree and traveling-position, calculate the absolute position of the car；Elevator operation controller, it controls the electricity
The operating of ladder；Power cut detection device, it detects the power failure for the power supply powered to the car position computing device；Releasing of brake
Detection means, it, which is detected the presence of, implements manual brake release action；And storage device, it is stored is detected using described have a power failure
Device carries out the testing result of releasing of brake detection means during power failure detection, and the elevator operation controller is described
The manual brake release can be implemented during power up expression can not be obtained with reference to the storage content of the storage device
In the case of the information of action, based on the absolute position of the car calculated using the car position computing device, control
Make the operating of the car.
Invention effect
In accordance with the invention it is possible to when power supply is from service restoration, the time required untill elevator operates again is foreshortened to.In addition,
Problem, structure and effect other than the above can be according to the explanations of implementation below come clearly.
Brief description of the drawings
Fig. 1 is the circuit structure diagram for showing the control system in the elevator device of one embodiment of the invention.
Fig. 2 is the flow chart for illustrating the processing action of control system and elevator controlling microcomputer in elevator device.
Embodiment
Hereinafter, based on brief description of the drawings embodiments of the invention.
【Embodiment 1】
Fig. 1 is the circuit structure diagram for showing the control system in the elevator device of one embodiment of the invention.In Fig. 1, electricity
The power supply of control system in terraced system has：Electronic security(ELSEC) power supply+Vo, it is arranged on the safety device in elevator for control
The power supply of electronic security(ELSEC) microcomputer (not shown)；Power supply+V, it is to be received and sent messages with electronic security(ELSEC) microcomputer and control elevator (not scheme
Show) operating elevator controlling microcomputer 9 power supply；And back-up source 1 when having a power failure, it is made up of battery and charger etc..
Between electronic security(ELSEC) power supply+Vo and GND (ground connection) as the power supply of electronic security(ELSEC) microcomputer, configure for detecting
The power cut detection device 2 of electronic security(ELSEC) power supply+Vo power failure.Power cut detection device 2 is made up of relay and conductor etc..For example,
Power cut detection device 2 is made up of relay coil 3 and b contacts (power failure detection contact) 4, and the relay coil 3 is pacified in electronics
Full power supply+Vo can be unmagnetized when having a power failure, and the b contacts (power failure detection contact) 4 are inserted into back-up source 1 and GND when having a power failure
In the power supply circuit of (ground connection) connection, power supply circuit can be closed when relay coil 3 is unmagnetized.Now, power cut detection device 2
When detecting that electronic security(ELSEC) power supply+Vo has a power failure, that is to say, that when electronic security(ELSEC) power supply+Vo disappears, relay coil 3 can be disappeared
Magnetic, and b contacts 4 can close.
Releasing of brake detection means 5 is made up of switch 8, and the switch 8, which is inserted into, (connects back-up source 1 and GND when having a power failure
Ground) connection power supply circuit in.The releasing of brake detection means 5 is to detect the dress that manual brake release action whether there is implementation
Put, such as be made up of switch 8, the switch 8 implements when detecting to implement release brake action when rescuing operation
When manual brake release acts, power supply circuit can be closed.During the closure of switch 8, letter can be unclamped from the output manual brake of switch 8
Number., can operation door area BZ switches be rescued in use, manual brake back-off assembly takes out and switchs or be arranged on as switch 8
Manual release detection switch on brake etc..In addition, when manual brake release action being not carried out when rescuing operation, switch 8
Power supply circuit can be disconnected.Herein, opening for switch is dismantled exemplified with closure when taking out manual brake back-off assembly from site of storage
Close 8.
Although the switch 8 as above-mentioned releasing of brake detection means 5 is expressed as taking out manual brake from site of storage
The switch 8 of closure dismounting switch during back-off assembly, but this is not limited to, also display manual brake can be unclamped Shi Men areas
Display device (door area BZ etc.) action signal be used as manual brake unclamp signal, or will install on the brake when meeting
The action signal of the manual release detection switch of closure is used as manual brake and unclamps signal.
The storage device 6 being made up of guard relay etc. is configured to, when carrying out power failure detection using power cut detection device 2
The storage part of the testing result of releasing of brake detection means 5 can be stored.Now, storage device 6 includes：Set coil 7, its with
Switch 8 and b contacts (power failure detection with contact) 4 are inserted into back-up source 1 is connected with GND (ground connection) when having a power failure confession in series
In circuit, and power supply circuit has been respectively closed to switch 8 and b contacts (power failure detection with contact) 4 and has carried out excitation as condition；
A contacts (set coil contact) 11, it is inserted into be connected the power supply+V of elevator controlling microcomputer 9 with elevator controlling microcomputer 9
In power circuit, power circuit is closed in 7 excitation of set coil, and to the output action signal of elevator controlling microcomputer 9；It is and multiple
Bit line circle 10, it is connected to the power supply+V of elevator controlling microcomputer 9, and response action signal receives what is exported from elevator controlling microcomputer 9
Reset signal simultaneously carries out excitation, and the instruction for resetting calculated value is sent to electronic security(ELSEC) microcomputer.
Elevator controlling microcomputer 9 is for example with CPU (Central Processing Unit, central processing unit), storage
The computer installation of the messaging resources such as device, input/output interface, it is configured to believe with the transmitting-receiving (not shown) of electronic security(ELSEC) microcomputer
Cease and control the elevator operation controller of the operating of elevator.
Electronic security(ELSEC) microcomputer (not shown) is the letter such as with CPU, memory, input/output interface, various sensors
The computer installation of process resource is ceased, is configured to car position computing device, it is risen based on expression in the hoistway of elevator
The position detection signal of the test position of the car of drop and travel speed and the code device signal of traveling-position comprising car
To calculate the absolute position of car.Specifically, electronic security(ELSEC) micro mechanism turns into car position computing device, and it is superfluous using measuring
(as the sensor of the travel speed of measurement car, output includes the travel speed of car and the volume of traveling-position to remaining encoder
Code device signal device) code device signal and position detecting device (by the screening being arranged in correspondence with each floor of hoistway side
Shield plate and installed in cage side and cut off light path by using shield and detect the optical sensor group of the position of car
Close the device that forms) position detection signal (positive signal), calculate the absolute position of car.Therefore, electronic security(ELSEC) power supply+Vo is being just
Chang Shi, the absolute position of electronic security(ELSEC) Microcomputer Calculation car can be utilized, therefore elevator controlling microcomputer 9 can be when elevator recovers
The absolute position of the car gone out using electronic security(ELSEC) Microcomputer Calculation.But during electronic security(ELSEC) power supply+Vo power failures, electronic security(ELSEC) is micro-
Machine can not detect the code device signal (output signal) of REDUNDANCY ENCODER., can nothing if implementing to rescue operation in this condition
Method knows car position (absolute position of car), it is therefore necessary to car is temporally shifted to end floor, confirms car position
Afterwards, elevator is operated again.
Therefore, in the present embodiment, the power cut detection device 2 and root of the power failure for detecting electronic security(ELSEC) power supply+Vo are set
Have been carried out rescuing the releasing of brake detection means 5 of operation according to release operation (action) detection of brake, distinguish and have a power failure
Shi Youwu implements to rescue operation.
Specifically, operation is rescued if implemented when having a power failure, reset signal can be sent to resetting coil 10, by profit
The car position (absolute position of car) kept with electronic security(ELSEC) microcomputer resets, and car is temporally shifted to end floor,
After confirming car position, elevator is operated again.
In contrast, in the case of being not carried out rescuing operation when having a power failure, it can use and be kept using electronic security(ELSEC) microcomputer
Car position, therefore by using the car position being maintained in electronic security(ELSEC) microcomputer, operate to nearest floor, can be simple
Ground corrects car position.
Now, in the present embodiment, the power cut detection device 2 for the power failure for detecting electronic security(ELSEC) power supply+Vo, detection is set to have
Had a power failure without the releasing of brake detection means 5 for implementing manual brake release action and using power cut detection device 2
During detection, the storage device 6 of the testing result of storage releasing of brake detection means 5, and expression is stored in storage device 6
The signal of content (state) obtained and monitored by elevator controlling microcomputer 9.
When electronic security(ELSEC) power supply+Vo is normal, the relay coil 3 of power cut detection device 2 can be excited, and the b contacts 4 are disconnected
Open state.But after electronic security(ELSEC) power supply+Vo has a power failure, the relay coil 3 of power cut detection device 2 can be unmagnetized, the b contacts 4
(closure state) will be closed.
If implementing to rescue operation when losing the power supply, the releasing of brake inspection of back-up source 1 when being connected to power failure
Surveying the switch 8 of device 5 can close, and set coil 7 can unclamp signal according to manual brake and carry out excitation.Further, since
The excitation of set coil 7, a contacts 11 can close, and make the action signal of the closure state of expression a contacts 11 by elevator controlling
Microcomputer 9 obtains.
On the other hand, even if electronic security(ELSEC) power supply+Vo power failures still are not carried out rescuing operation, releasing of brake detection means
5 switch 8 can be remained off, and set coil 7 will not be excited.Therefore, a contacts 11 are off-state, represent a contacts 11
The action signal of closure state will not be obtained by elevator controlling microcomputer 9.
As described above, after electronic security(ELSEC) power supply+Vo recoveries (after reverting to normal condition), elevator controlling microcomputer 9 being capable of area
When dividing the situation for rescuing operation of implementing when having a power failure (when obtaining the action signal of the closure state of expression a contacts 11) and having a power failure
It is not carried out rescuing the situation (when not obtaining the action signal for the closure state for representing a contacts 11) of operation, so as to control elevator
Operating.That is, elevator controlling microcomputer 9 when electronic security(ELSEC) power supply+Vo recovers, understands the storage content with reference to storage device 6,
Implement manual brake release action according to whetheing there is to control the operating of car.
Specifically, elevator controlling microcomputer 9 can not obtain expression and implement manually with reference to the storage content of storage device 6
During the information of releasing of brake action, that is to say, that represent that releasing of brake detection means 5 does not detect to have been carried out to obtain
The information of manual brake release action is condition as the reference results for storage device 6, is judged as in electronic security(ELSEC) electricity
Source+Vo is not carried out rescuing operation when having a power failure, and is counted electronic security(ELSEC) microcomputer (car position computing device) according to the result of determination
The absolute position of the car calculated is set to effective, and the absolute position control car of the car gone out based on electronic security(ELSEC) Microcomputer Calculation
Operating.For example, elevator controlling microcomputer 9 operates car to nearest floor.Therefore, electronic security(ELSEC) power supply+Vo recovers after power failure
During power supply, the time required untill elevator operates again can be foreshortened to.
On the other hand, elevator controlling microcomputer 9 is to be used as the reference results for storage device 6, releasing of brake detection
Device detects that it is condition to implement manual brake release action, judges to implement when electronic security(ELSEC) power supply+Vo has a power failure and rescues
Go out operation, and the absolute position for the car that electronic security(ELSEC) microcomputer (car position computing device) is calculated is set to invalid, implements
Control, at least operates car to end floor.
Fig. 2 is the flow chart for illustrating the processing action of control system and elevator controlling microcomputer in elevator device.
First, elevator power failure (step S1) is occurring because power supply+V disappears, and during manual brake release (step S2),
Determine whether that implementing manual brake unclamps (step S3) by releasing of brake detection means 5 in control system.System is not passed through
Dynamic device unclamps detection means 5 to detect releasing of brake, step S3 when being NO, is transferred to step S8 processing, step S3 is YES
When, that is, when implementing manual brake release action, judge electronic security(ELSEC) power supply+Vo whether there is disappearance (step by control system
S4).That is, the switch 8 of releasing of brake detection means 5 closes and the relay b contacts 4 of power cut detection device 2 close
Afterwards, judge the set coil 7 of storage device 6 whether there is back-up source 1 when being connected to power failure and carries out excitation.
As a result, detect that implementing release brake acts by releasing of brake detection means 5, and by stopping
When electric detection means 2 detects that electronic security(ELSEC) power supply+Vo disappears, i.e. when step S4 is YES, manual brake unclamps signal to have
Imitate (step S5), the set coil (guard relay set coil) 7 of storage device 6 can be powered, and a contacts 11 can remain ON
State (closure state) (step S6).
On the other hand, electronic security(ELSEC) power supply+Vo does not disappear, when step S4 is NO, because relay coil 3 can be excited,
The b contacts 4 turn into off-state, so even if implementing manual brake release action (even if the closure of switch 8), manual brake
Invalid (step S7) can be also changed into by unclamping signal.Now, even if switch 8 is closure, set coil 7 will not also be powered, and turn into non-
"on" position, therefore a contacts 11 can remain OFF state (off-state) (step S8).
Afterwards, with power supply+V recovery, after elevator power supply is recovered (step S9), elevator controlling microcomputer 9 can judge to store
Whether a contacts 11 of the guard relay of device 6 are ON states (step S10).When step S10 is YES, detect a contacts
11 when being ON states, that is to say, that is implemented during power failure when rescuing operation, elevator controlling microcomputer 9 can be used as to implement when having a power failure and rescue
Go out operation, reset signal is sent to resetting coil 10, while reset signal is sent to electronic security(ELSEC) microcomputer, make electronic security(ELSEC)
Microcomputer ignores car absolute position (absolute position of car).Thus, electronic security(ELSEC) microcomputer can be by the absolute position of the car detected
Put and resetted, elevator controlling microcomputer 9 can ignore the car absolute position that electronic security(ELSEC) microcomputer detects, and implement to transport car
Go to the processing (step S11) of end floor.Then, implement the operation (step S14) for recovering elevator, terminate the place of the program
Reason.
On the other hand, elevator controlling microcomputer 9 is NO in step S10, and when to detect a contacts 11 be OFF state, that is, is had a power failure
When be not carried out in the case of rescuing operation, by position (the absolute position of car for the car that will be recorded in electronic security(ELSEC) microcomputer
Put) it is set to effective (step S12), and it is (micro- using electronic security(ELSEC) using the car absolute position being recorded in electronic security(ELSEC) microcomputer
The car absolute position that machine examination is measured), operate to nearest floor, so as to correct car position (step S13).Then, implement to make
The operation (step S14) that elevator recovers, terminates the processing of the program.
Elevator controlling microcomputer 9 checks the state of set coil 7 in step slo, if the excitation of set coil 7,
Represent that the switch 8 of releasing of brake detection means 5 closes, and carried out rescuing operation by implementing release brake action, because
This can ignore that the car position (resetting the absolute position of car) being recorded in electronic security(ELSEC) microcomputer, and by car run to
End floor, after car position is confirmed, recover elevator.On the other hand, if set coil 7 is unmagnetized, elevator controlling is micro-
Machine 9 can utilize the car position being recorded in electronic security(ELSEC) microcomputer, and car is operated to nearest floor, then recovers elevator.
In above-described embodiment, use as the releasing of brake detection means 5 for detecting manual brake release action
The switch 8 that can be closed when implementing manual brake release and acting；Power failure as detection electronic security(ELSEC) power supply+Vo power failure
The b contacts 4 of the relay coil 3 of detection means 2；When being used for storing power failure between back-up source 1 when being connected on them and having a power failure
Implement the set coil 7 of the storage device 6 for the situation for rescuing operation；And by the excitation of set coil 7 to elevator controlling
The a contacts 11 of the sending action signal of microcomputer 9.
Therefore, it is possible to independent of microcomputer software etc., detect releasing of brake with high reliability.In addition, when implementing of the invention,
These structures are not limited to, can also be rescued by the program being stored in elevator controlling microcomputer 9 to being implemented when having a power failure
Made a distinction when during operation with being not carried out rescuing operation when having a power failure, run sedan-chair using different car location informations respectively
Railway carriage or compartment.
According to the present embodiment, the time required untill elevator operates again can be foreshortened to when power supply is from service restoration.
Made a distinction that is, implementing during to having a power failure and being not carried out rescuing the situation of operation when situation and the power failure of rescuing operation,
It is not carried out utilizing the car absolute position of electronic security(ELSEC) microcomputer in the case of rescuing operation during power failure, therefore can integrally foreshortens to
The required time untill operating elevator again.It so, it is possible the service of further improvement elevator.
In addition, the present invention is not limited to above-described embodiment, various modifications example is included.For example, in order in the explanation present invention
When be understood that, be described in detail by above-described embodiment, but be not limited to possess illustrated all structures.This
Outside, it is of course possible to which the part-structure of embodiment is replaced with to the structure of other embodiment.
Label declaration
Back-up source during 1 power failure
2 power cut detection devices
3 relay coils
4 b contacts
5 releasing of brake detection means
6 storage devices
7 set coils
8 switches
9 elevator controlling microcomputers
10 resetting coils
11 a contacts.
Claims (3)
1. a kind of elevator device, it is characterised in that have：Car position computing device, it is based on representing to rise in elevator hoistways
The position detection signal of the test position of the car of drop is believed with the encoder of the travel speed comprising the car and traveling-position
Number, calculate the absolute position of the car；
Elevator operation controller, it controls the operating of the elevator；
Power cut detection device, it detects the power failure for the power supply powered to the car position computing device；
Releasing of brake detection means, it, which is detected the presence of, implements manual release brake action；And
Storage device, it is stored carries out releasing of brake detection means when power failure detects using the power cut detection device
Testing result,
The elevator operation controller
In the power up can with reference to the storage content of the storage device, can not obtain expression implement it is described manually
In the case of the information of release brake action, based on the exhausted of the car calculated using the car position computing device
To position, to control the operating of the car.
2. elevator device according to claim 1, it is characterised in that
The elevator operation controller
Represent that the releasing of brake detection means does not detect to obtain as the reference results for the storage device
The information for going out to implement the manual release brake action is condition, is judged to, in the power outage, being not carried out rescuing
Operation, and the absolute position for the car for being calculated the car position computing device according to the result of determination has been set to
Effect, the car is operated to nearest floor.
3. elevator device according to claim 1 or 2, it is characterised in that
The releasing of brake detection means includes：
Switch, it is inserted into the power supply circuit of back-up source and grounding connection when having a power failure, and is implementing the release manually
Brake closes the power supply circuit when acting,
The power cut detection device includes：
Coil, it can demagnetization in the power outage；And
Power failure detection contact, it is inserted into the power supply circuit, and the power supply circuit is closed in the coil demagnetization,
The storage device includes：
Set coil, it is inserted into the power supply circuit with the switch and the power failure detection contact series, and
It is respectively closed the power supply circuit using the switch and the power failure detection with contact and carries out excitation as condition；
Set coil contact, it is inserted into the power supply of the elevator operation controller and the elevator operation controller
In the power circuit of connection, and the power circuit is closed in the set coil excitation, action signal is exported to described
Elevator operation controller；And
Resetting coil, it is connected to the power supply of the elevator operation controller, responds the action signal and receives from the electricity
The reset signal of terraced operation controller output simultaneously carries out excitation, and sends reset calculated value to the car position computing device
Instruction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-155900 | 2016-08-08 | ||
| JP2016155900A JP6527846B2 (en) | 2016-08-08 | 2016-08-08 | Elevator system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107697761A true CN107697761A (en) | 2018-02-16 |
| CN107697761B CN107697761B (en) | 2019-09-03 |
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ID=61170818
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710660806.7A Active CN107697761B (en) | 2016-08-08 | 2017-08-04 | Elevator device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6527846B2 (en) |
| CN (1) | CN107697761B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626172A (en) * | 2018-11-09 | 2019-04-16 | 日立电梯（中国）有限公司 | Elevator control method, elevator and computer readable storage medium |
| CN110255319A (en) * | 2019-06-05 | 2019-09-20 | 快意电梯股份有限公司 | Elevator position identifying system, method and lift facility |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5274203A (en) * | 1989-06-30 | 1993-12-28 | Otis Elevator Company | "Smart" position transducer system for elevators |
| CN1131636A (en) * | 1994-11-17 | 1996-09-25 | Lg产电株式会社 | Position detecting apparatus for elevator |
| CN1141262A (en) * | 1995-02-17 | 1997-01-29 | Lg产电株式会社 | Motive floor data correction control apparatus for elevator and method thereof when power is restored |
| JP2001316054A (en) * | 2000-05-10 | 2001-11-13 | Hitachi Building Systems Co Ltd | Method of rescuing passenger shut in elevator |
-
2016
- 2016-08-08 JP JP2016155900A patent/JP6527846B2/en active Active
-
2017
- 2017-08-04 CN CN201710660806.7A patent/CN107697761B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5274203A (en) * | 1989-06-30 | 1993-12-28 | Otis Elevator Company | "Smart" position transducer system for elevators |
| CN1131636A (en) * | 1994-11-17 | 1996-09-25 | Lg产电株式会社 | Position detecting apparatus for elevator |
| CN1141262A (en) * | 1995-02-17 | 1997-01-29 | Lg产电株式会社 | Motive floor data correction control apparatus for elevator and method thereof when power is restored |
| JP2001316054A (en) * | 2000-05-10 | 2001-11-13 | Hitachi Building Systems Co Ltd | Method of rescuing passenger shut in elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6527846B2 (en) | 2019-06-05 |
| JP2018024490A (en) | 2018-02-15 |
| CN107697761B (en) | 2019-09-03 |
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