CN109399414B - Method for correcting position of lift car - Google Patents
Method for correcting position of lift car Download PDFInfo
- Publication number
- CN109399414B CN109399414B CN201811234517.1A CN201811234517A CN109399414B CN 109399414 B CN109399414 B CN 109399414B CN 201811234517 A CN201811234517 A CN 201811234517A CN 109399414 B CN109399414 B CN 109399414B
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- Prior art keywords
- car
- acceleration
- cage
- position information
- value
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
- B66B1/40—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings
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- 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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Control (AREA)
Abstract
The invention discloses a method for correcting the position of an elevator car, which comprises the steps of detecting and outputting an acceleration signal of the movement of the car by an acceleration detecting part, receiving the acceleration signal of the movement of the car by an acceleration extracting part to generate and output the acceleration of the movement of the car, generating and outputting a car moving direction signal and car moving distance information to a car position calculating part by a speed distance calculating part according to the direction and the magnitude of the received acceleration of the movement of the car and the duration time of the acceleration, generating and storing the current position information of the car by the car position calculating part according to the car moving direction signal, the car moving distance information and the last position information of the car, providing the car position information to the car position calculating part by a system using part when the position of the car is normal, updating and storing the last position information of the car by the current car position information of the car position calculating part when the position is abnormal .
Description
Technical Field
The invention relates to the technical field of elevator control, in particular to a correction method for car position information.
Background
The elevator operation can meet scram unavoidably, can just stop through the processes of motor rotation, steel wire rope slippage on the traction sheave after scram, and in the general system of calculating car position information by the host encoder in the industry, when steel wire rope slips on the traction sheave, the car moving distance can not be calculated because of the host encoder stops rotating, thereby resulting in the car position information to be abnormal, because of unable detection of encoder signal when having a power failure and scram, the car unexpected movement of manual rescue, etc. can all produce the car position information to be abnormal.
When the position information of the elevator car is abnormal, the method commonly used in the industry is that the elevator slowly moves to a door area or the end step to correct the position information of the elevator car and then returns to normal operation. After passengers are threatened by sudden stop, the elevator moves slowly to correct the position of the elevator car, the passengers often mistakenly fall off the elevator, the passengers feel the fear again, the feeling is very bad, and the passengers are often exposed by media.
In order to solve the problems, at present, manufacturers adopt a car position information direct detection method, but in the scheme, an absolute position steel belt and an absolute position reading device are required to be added in a hoistway, so that the cost is increased greatly, and the number of abnormal points and fault points of an elevator is increased by newly added parts.
Disclosure of Invention
The present invention is directed to a method for correcting car position information, which solves the above-mentioned problems of conventional car position information detection.
The technical problem to be solved by the invention can be realized by the following technical scheme:
a car position correction method is disclosed, wherein an acceleration detection portion detects and outputs an acceleration signal of the car movement, then an acceleration extracting part receives the acceleration signal of the car movement to make and output the acceleration of the car movement, a speed distance calculating part makes and outputs the car movement direction signal and the car movement distance information to a car position calculating part according to the direction and the magnitude of the received car movement acceleration and the duration time of the acceleration, the car position calculating part makes and stores the current position information of the car according to the car movement direction signal, the car movement distance information and the last position information of the car, a system using part provides the car position information to the car position calculating part to update and store the last position information of the car when the car position is normal, and updating the car position information of the system by using the current car position information of the car position calculating part when the position is abnormal.
In a preferred embodiment of the present invention, the acceleration detecting portion is formed by an elevator car and an acceleration sensor, wherein the acceleration sensor is fixed to the elevator car.
In a preferred embodiment of the present invention, the acceleration sensor is an acceleration sensor capable of detecting at least an acceleration in a vertical direction.
In a preferred embodiment of the invention, the acceleration sensor is fixed to one or any two or more of the car side panels or the car floor or the car frame or other components connected to the car and kept at a constant distance from the car.
In a preferred embodiment of the present invention, the acceleration extracting unit is composed of an a/D converter and an acceleration converter, and is capable of detecting, converting and outputting an acceleration value.
In a preferred embodiment of the present invention, the acceleration value is made into the direction of acceleration according to the detected value being greater or smaller than the reference value, and the magnitude of acceleration is made according to the difference between the current value and the reference value.
In a preferred embodiment of the present invention, the reference value is one or a combination of two or more of a preset fixed value, a detection value captured by an externally supplied signal, and a detection value in a non-motion state.
In a preferred embodiment of the present invention, the speed and distance calculating section generates a car moving direction signal based on a direction of the acceleration, generates car moving speed information based on a magnitude of the acceleration and a duration of the acceleration, and generates car moving distance information based on the magnitude of the speed and the duration of the acceleration.
In a preferred embodiment of the present invention, the car position calculating part creates and stores current car position information based on the moving direction of the car, the moving distance of the car, and the previous car position,
in a preferred embodiment of the present invention, the car position calculating section may update and store the last car position information when receiving the car position information provided by the system using section.
In a preferred embodiment of the present invention, the system using unit provides the car position information to the car position calculating unit for updating when the position is normal, and corrects the current car position information of the system using the car position information of the car position calculating unit when the system is needed.
In a preferred embodiment of the present invention, the acceleration sensor, the acceleration extraction unit, the speed distance calculation unit, the car position calculation unit, and the system use unit are each configured by an independent hardware circuit or by one or two or more hardware circuits.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages:
the invention utilizes the acceleration sensor to check the acceleration of the car, calculates the moving direction and distance of the car by using the acceleration information, calculates the final position of the car after moving according to the position of the car provided by the control system, reads and updates the position information of the car when the system environment is recovered to normal (such as power failure and call coming) again, directly runs to the flat position or the floor where the passenger calls the elevator, avoids the situation that the car moves to correct the position information of the car, avoids the passenger mistakenly thinks that the car is a falling elevator and produces fear again, can also shorten the system recovery time, and improves the service quality of the elevator.
Drawings
Fig. 1 is a schematic flow chart of a method for correcting the position of a car according to the invention.
Detailed Description
Referring to fig. 1, an acceleration signal of car movement is detected and output by an acceleration detecting portion 100 according to a car position correcting method of the present invention. The acceleration detecting portion 100 is composed of an elevator car 110 and an acceleration sensor 120, wherein the acceleration sensor 120 is fixed on the elevator car 110, such as one or more than two of a car side plate, a car floor, a car frame or other components connected with the car and keeping the distance from the car constant. The acceleration sensor 120 is an acceleration sensor capable of detecting at least an acceleration in the vertical direction. For example, one or a combination of two or more of a single-axis acceleration sensor, a three-axis acceleration sensor, and a gyroscope. The acceleration sensor 120 can thus detect the acceleration of the movement of the elevator car 110 in time when the elevator car 110 is descending.
The acceleration of the movement of the elevator car 110 detected by the acceleration sensor 120 is sent to the acceleration extraction unit 200. The acceleration extracting part 200 is composed of an a/D converter 210 and an acceleration converter 220 to detect, convert and output an acceleration value. The acceleration value is made into the direction of acceleration according to the larger or smaller of the detected value and the reference value, and the acceleration value is made into the magnitude of acceleration according to the difference value of the current value and the reference value. The reference value is one or a combination of two or more of a preset fixed value, a detection value captured by externally providing a signal, and a detection value in a non-motion state.
The direction and magnitude of the car movement acceleration output from the acceleration extracting section 200 are further made and output by a speed and distance calculating section 300 to a car position calculating section 400 based on the received direction and magnitude of the car movement acceleration and the duration of the acceleration.
The current position information of the car is made and stored by the car position calculating part 400 according to the moving direction signal of the car, the moving distance information of the car and the last position information of the car, and the last position information of the car can be updated and stored when the position information of the car provided by the system using part 500 is received.
The system using unit 500 mainly functions to provide the car position information to the car position calculating unit 400 to update and store the previous car position information when the car position is normal, and to update the car position information of the system with the current car position information of the car position calculating unit 400 when the position is abnormal.
The acceleration sensor 120, the acceleration extraction unit 200, the speed distance calculation unit 300, the car position calculation unit 400, and the system use unit 500 are each configured by an independent hardware circuit or by one or any two or more hardware circuits.
Claims (5)
1. A method for correcting the position of cage features that an acceleration signal of cage movement is detected and output by an acceleration detecting part, an acceleration extracting part receives the acceleration signal of cage movement to generate the acceleration of cage movement, a speed-distance calculating part generates and outputs the direction signal of cage movement and the distance information of cage movement to a cage position calculating part according to the direction and magnitude of acceleration, a system using part provides the cage position information to said cage position calculating part for updating and storing the previous position information of cage, and a current position information of cage is updated by said current position information of cage position calculating part when cage position is normal (ii) a When the system environment is recovered to be normal again, the position information of the car is read and updated, and the car is directly operated to the flat position or the floor called by the passenger;
the acceleration extraction part is composed of an A/D converter and an acceleration converter, and can detect, convert and output an acceleration value;
the acceleration value is made into the direction of acceleration according to the larger or smaller of the detected value and the reference value, and the magnitude of the acceleration is made according to the difference value of the current value and the reference value;
the reference value is one or the combination of more than two of a preset fixed value, a detection value captured by an externally provided signal and a detection value in non-motion;
the speed distance calculation part is used for making a car moving direction signal according to the direction of the acceleration, making car moving speed information according to the magnitude of the acceleration and the duration time of the acceleration, and making car moving distance information according to the magnitude of the speed and the duration time of the acceleration;
the car position calculating part is used for creating and storing current car position information according to the moving direction of the car, the moving distance of the car and the last car position;
the car position calculating part can update and store the last car position information when receiving the car position information provided by the system using part;
the system using part provides the cage position information to the cage position calculating part for updating when the position is normal, and corrects the current cage position information by using the cage position information of the cage position calculating part when the system is needed.
2. A method as claimed in claim 1, wherein said acceleration detecting portion is constituted by an elevator car and an acceleration sensor fixed to said elevator car.
3. A method as claimed in claim 2, wherein the acceleration sensor is an acceleration sensor capable of detecting at least a vertical acceleration.
4. A method as claimed in claim 2, wherein the acceleration sensor is fixed to one or more of a car side panel, a car floor, a car frame, or other members connected to the car and having a constant distance from the car.
5. A method as set forth in claim 2, wherein the acceleration sensor, the acceleration extracting section, the velocity distance calculating section, the car position calculating section, and the system using section are each constituted by a separate hardware circuit or are constituted by one or any two or more hardware circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811234517.1A CN109399414B (en) | 2018-10-23 | 2018-10-23 | Method for correcting position of lift car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811234517.1A CN109399414B (en) | 2018-10-23 | 2018-10-23 | Method for correcting position of lift car |
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| Publication Number | Publication Date |
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| CN109399414A CN109399414A (en) | 2019-03-01 |
| CN109399414B true CN109399414B (en) | 2021-05-11 |
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| CN201811234517.1A Active CN109399414B (en) | 2018-10-23 | 2018-10-23 | Method for correcting position of lift car |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW212836B (en) * | 1991-04-22 | 1993-09-11 | Hitachi Seisakusyo Kk | |
| CN101531302A (en) * | 2008-03-13 | 2009-09-16 | 东芝电梯株式会社 | Elevator system |
| CN106044430A (en) * | 2015-04-16 | 2016-10-26 | 通力股份公司 | Method for the position detection of an elevator car |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3256575B2 (en) * | 1992-06-15 | 2002-02-12 | 三菱電機株式会社 | Elevator control device |
| JP3249024B2 (en) * | 1995-03-02 | 2002-01-21 | 株式会社日立ビルシステム | Elevator running characteristics inspection device |
| EP2186768B1 (en) * | 2007-12-19 | 2016-04-20 | Mitsubishi Electric Corporation | Elevator device |
| JP5623264B2 (en) * | 2010-12-14 | 2014-11-12 | 株式会社日立製作所 | Elevator car position detection device |
| WO2017076452A1 (en) * | 2015-11-05 | 2017-05-11 | Otis Elevator Company | Elevator system and method for controlling an elevator system |
| CN107651516B (en) * | 2017-09-27 | 2019-06-21 | 宁夏电通物联网科技股份有限公司 | Elevator floor detection device and detection system and method based on three axis air pressure Halls |
| CN108275529A (en) * | 2018-03-06 | 2018-07-13 | 上海昶屹机电科技有限公司 | Elevator position detector and flat bed control method |
-
2018
- 2018-10-23 CN CN201811234517.1A patent/CN109399414B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW212836B (en) * | 1991-04-22 | 1993-09-11 | Hitachi Seisakusyo Kk | |
| CN101531302A (en) * | 2008-03-13 | 2009-09-16 | 东芝电梯株式会社 | Elevator system |
| CN106044430A (en) * | 2015-04-16 | 2016-10-26 | 通力股份公司 | Method for the position detection of an elevator car |
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| CN109399414A (en) | 2019-03-01 |
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