CN114555506B - Elevator system - Google Patents
Elevator system Download PDFInfo
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- CN114555506B CN114555506B CN201980101207.9A CN201980101207A CN114555506B CN 114555506 B CN114555506 B CN 114555506B CN 201980101207 A CN201980101207 A CN 201980101207A CN 114555506 B CN114555506 B CN 114555506B
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- car
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- detection sensor
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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
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- Indicating And Signalling Devices For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The disclosed device is provided with: the elevator car control device comprises a detection sensor (9) arranged on the elevator car (1), a detected body (10) detected by the detection sensor (9), an encoder (8) outputting signals according to the lifting of the elevator car (1), a controller (14) calculating the position of the elevator car (1) according to the position of the detected body (10) of each floor and the signals of the encoder (8) and storing the calculated position of the elevator car (1) from the preset time to the current, and an elevator car controller (11) storing a log of the detection state of the detected body (10) detected by the detection sensor (9) from the preset time to the current and transmitting the detection state of the detected body (10) to the controller (14). When a communication abnormality occurs between the controller (14) and the car controller (11), the controller determines an abnormality of the detection sensor (9) or the detected body (10) during the occurrence of the communication abnormality based on the log of the detected body (14) in the detection state, the log of the position information of the car (1), and the position information of the detected body (10) provided at each floor.
Description
Technical Field
The present invention relates to an elevator system.
Background
In an elevator having a car that performs an elevating operation in an elevator shaft, it is general to perform control to determine whether or not the car is present in a door openable region indicating a position where a passenger can get on and off the elevator. For example, a detection sensor provided at an upper portion or a lower portion of the car detects a detection target provided at each floor position in the hoistway, thereby detecting the door-openable region.
When some abnormality occurs in the detection sensor or the detection object, there is a possibility that the car door does not open in the openable door region or opens in the openable door region. Therefore, it is important in safety to detect an abnormality in the detection sensor or the object to be detected and stop the operation of the elevator.
As an example of ensuring the safety of an elevator, there is a technique described in patent document 1. In patent document 1, although a floor detection circuit that detects a floor position of a car detects that the car has moved 2 floors, when a detection sensor does not detect a detected object, the detection sensor or the detected object is determined to be abnormal.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2018-2387
Disclosure of Invention
Problems to be solved by the invention
Patent document 1 has the following problems: when a period during which communication is not possible occurs between a floor detection circuit that detects the current floor of the car and a position detector failure determination circuit that determines failure of the position detector, even if an abnormality occurs in the detection sensor and the object to be detected during the period, the abnormality cannot be detected.
The invention aims to provide an elevator system which can retrospectively detect the abnormity of a detection sensor or a detected object generated in the period of abnormity of a communication unit after the communication returns to normal.
Means for solving the problems
In order to achieve the above object, the present invention provides an elevator system including: the elevator system comprises a car which ascends and descends in an ascending and descending channel, a detection sensor arranged on the car, and a detected object which is arranged in the ascending and descending channel and is detected by the detection sensor, and is characterized by comprising: an encoder that outputs a signal according to the lifting of the car; a controller for calculating the position of the car based on the position of the detected body provided at each floor and the signal of the encoder, and storing the calculated position of the car from a predetermined time to the present time; and a car controller that stores a log of a detection state of the detected body from a predetermined time onward detected by the detection sensor and transmits the detection state of the detected body to the controller, wherein when a communication abnormality occurs between the controller and the car controller, the controller determines an abnormality of the detection sensor or the detected body during the occurrence of the communication abnormality based on the log of the detection state of the detected body, the log of the position information of the car, and the position information of the detected body provided at each floor.
Effects of the invention
According to the present invention, it is possible to provide an elevator system capable of retrospectively detecting an abnormality of a detection sensor or a detection object generated during an abnormality of a communication means after communication is restored to normal.
Drawings
Fig. 1 is an overall configuration diagram of an elevator system according to an embodiment of the present invention.
Fig. 2 shows the structures of the car controller 11 and the controller 14 according to the embodiment of the present invention.
Fig. 3 is a flowchart showing the processing contents of the car controller 11 according to the embodiment of the present invention.
Fig. 4 is a flowchart showing the processing contents of the controller 14 according to the embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same components are denoted by the same reference numerals, and the same description will not be repeated.
The various components of the present invention do not necessarily need to be present independently of each other, and it is permissible for one component to be constituted by a plurality of members, for a plurality of components to be constituted by one member, for a certain component to be a part of another component, for a part of a certain component to overlap with a part of another component, and the like.
Fig. 1 is an overall configuration diagram of an elevator system according to an embodiment of the present invention. The elevator system of the present embodiment is a so-called bucket elevator system in which a car 1 and a counterweight 2 are connected by a main rope 3. The car 1 is raised and lowered in the hoistway by rotationally driving a sheave on which the main ropes 3 are suspended by the motor 4. The motor 4 is disposed in the machine room at the upper portion of the hoistway.
The motor 4 includes a hoisting machine brake 5, and the rotation of the motor 4 is prevented by the operation of the hoisting machine brake 5. As a result, the car 1 stops.
The governor rope 6 is pulled along with the raising and lowering of the car 1, and rotates the governor 7. The governor 7 includes an encoder 8, and the encoder 8 rotates together with the governor 7 to generate a pulse signal. That is, the encoder 8 outputs a signal according to the raising and lowering of the car.
A detection sensor 9 that detects a detection object 10 provided at each floor FL in the hoistway is provided in the upper portion of the car 1. The detection object 10 is adjusted so that the detection sensor 9 is positioned at the center in the vertical direction of the detection object 10 when the car 1 stops without a stop deviation.
The detection sensor 9 is connected to a car controller 11 provided in the car 1, and the car controller 11 determines whether or not the detection sensor 9 detects the detected body 10. The car controller 11 transmits the detection state of the detection sensor 9 to the controller 14 via the car-side wireless terminal 12 and the control panel-side wireless terminal 13. The controller 14 is provided in the machine room.
The controller 14 determines whether the car 1 is at the floor position based on the detection state of the detection sensor 9 received from the car controller 11. And, the controller 14 calculates the position and speed of the car 1 using the pulse signal from the encoder 8. The controller 14 outputs an operation command to the motor 4 and the hoist brake 5 based on these pieces of information, thereby controlling the up-and-down operation of the car 1.
The car controller 11 and the controller 14 always monitor the soundness of communication by health check, and can detect a communication abnormality when communication is not normal due to a failure or the like of the car-side wireless terminal 12 or the control panel-side wireless terminal 13.
Fig. 2 shows the structures of the car controller 11 and the controller 14 according to the embodiment of the present invention.
The car controller 11 includes a detection determination unit 201 and a car controller internal communication determination unit 202.
The detection determination unit 201 determines the detection state of the detection sensor 9 (whether or not the object 10 has been detected). The intra-car-controller communication determination unit 202 determines whether or not communication with the controller 14 is normal.
When the communication abnormality is detected, the in-car-controller communication determination unit 202 of the car controller 11 stores the detection state of the detection sensor 9 in the detection state memory 203. The car controller 11 stores the detection state of the detection sensor 9 on the object 10 from the present time to a predetermined time. The detection state memory 203 of the car controller 11 can store information on a plurality of detection states such as "current detection state", "detection state before 1 ms", and "detection state before 2 ms", and has a plurality of areas for storing information.
The controller 14 includes a car position calculating section 204, an intra-controller communication determining section 205, and a detected abnormality determining section 206.
The car position calculating unit 204 calculates the position of the car 1 in the hoistway using the pulse signal of the encoder 8.
The intra-controller communication determination unit 205 determines whether or not communication with the car controller 11 is normal. The detection abnormality determination unit 206 determines an abnormality of the detection sensor 9 or the object 10 (hereinafter referred to as a detection abnormality) using a received signal from the car controller 11.
The controller 14 includes an in-controller memory 207, and the in-controller memory 207 is composed of a floor position memory 208 and a car position memory 209.
The floor position memory 208 stores, for each floor, a calculated car position value (the lower end of the detected object 10 in the lowermost floor is set to 0) when the car 1 is moved from the lowermost floor to the uppermost floor at a low speed and the detection sensor 9 detects the lower end of the detected object 10 at the time of starting or adjusting the elevator system. That is, the position of the detection sensor 9 when the lower end of the detected body 10 is detected is calculated from the pulse signal of the encoder 8, and the calculated value is stored as the car position calculation value in the floor position memory 208. The floor position memory 208 stores the positions (lower end positions) of the objects 10 in each floor.
When the intra-controller communication determination unit 205 detects a communication abnormality, the controller 14 stores the car position calculation value in the car position memory 209.
The controller 14 calculates the position of the car 1 based on the signal (pulse signal) of the encoder 8, and stores the calculated position of the car 1 from the present time to a predetermined time ago. The car position memory 209 of the controller 14 can store information on a plurality of car positions such as "current car position", "car position before 1 ms", and "car position before 2 ms", and has a plurality of areas for storing the information.
Next, a process performed when an abnormality occurs in the elevator system will be described with reference to fig. 3 and 4.
Fig. 3 is a flowchart showing the processing contents of the car controller 11 according to the embodiment of the present invention. Fig. 4 is a flowchart of the processing content of the controller 14 of the embodiment of the present invention.
The flows of fig. 3 and 4 are performed periodically. In the present embodiment, the period is 1ms. Hereinafter, each process step will be described. First, the processing content of the car controller 11 will be described with reference to fig. 3.
Step S301: the intra-car-controller communication determination unit 202 determines whether or not communication with the controller 14 is abnormal. If the communication is abnormal (yes), the process proceeds to step 302, and if the communication is not abnormal (no), the process proceeds to step 303.
Step S302: the car controller 11 stores the detection state of the detection sensor 9 determined by the detection determination unit 201 as a "current detection state" in the detection state memory 203. In the case where information of the detection state 1 cycle ago (i.e., 1ms ago) has been stored in the "current detection state", the information is simultaneously moved to the "1ms ago detection state". Similarly, all the detection states stored in the "(N) ms previous detection state" are moved to the "(N + 1) ms previous detection state" (N is a natural number). Therefore, the log of the detection state of the object 10 up to the present time after the occurrence of the communication abnormality is stored in the detection state memory 203. After step S302, the present flow ends.
Step S303: the car controller 11 transmits information on the detection state of the detection sensor 9 determined by the detection determination unit 201 to the controller 14. Then, the process proceeds to step S304.
Step S304: the car controller 11 determines whether or not the information of the detection state is stored in the detection state memory 203. If the information of the detection state is stored (yes), the process proceeds to step S305, and if the information of the detection state is not stored (no), the present flow ends.
Step S305: the car controller 11 transmits all the information of the detection states stored in the detection state memory 203 to the controller 14. The transmitted information is transmitted in order from the current detection state, so that the controller 14 can determine that the information of each detection state is a detection state several milliseconds (ms) before. Then, the process proceeds to step S306. In step S305, when a communication abnormality occurs, the detection state of the object 10 detected by the detection sensor 9 from a predetermined time point onward to the present is stored with the time point at which the communication abnormality occurs as the start point, and when the communication abnormality is eliminated, the stored detection state of the object 10 is transmitted to the controller 14.
Step S306: the car controller 11 clears (deletes) all logs related to the detected state stored in the detected state memory 203. After that, the present flow is ended.
Next, the processing content of the controller 14 will be described with reference to fig. 4.
Step S401: the intra-controller communication determination unit 205 determines whether or not communication with the car controller 11 is abnormal. If the communication is abnormal (yes), the process proceeds to step S402, and if the communication is not abnormal (no), the process proceeds to step S405.
Step S402: the controller 14 stores the information on the car position calculated by the car position calculating unit 204 in the car position memory 209 as "current car position". In the case where information of the car position 1 cycle ago (i.e., 1ms ago) has been stored in the "current car position", it is moved to the "1 ms-ago car position" at the same time. Similarly, all the information on the detection state stored in the "(N) ms previous car position" is moved to the "(N + 1) ms previous detection state" (N is a natural number). Therefore, the car position memory 209 stores a log of the car position up to the present time after the occurrence of the communication abnormality. After step S402, the process proceeds to step S403.
Step S403: the controller 14 determines whether the car 1 is traveling based on the pulse signal from the encoder 8. If the car 1 is traveling (yes), the process proceeds to step S404, and if not (no), the process ends.
Step S404: the controller 14 reduces the rotation speed of the motor 4 to slowly decelerate and stop the car 1. When communication is abnormal, the running of the car is stopped for safety. However, in order to suppress the uneasiness given to the passengers as much as possible, the car 1 is not stopped urgently but is decelerated slowly and then stopped. After stopping, the operation of the elevator is stopped. The present flow ends after step S404.
Step S405: the detected abnormality determination unit 206 determines whether or not there is an abnormality in the detection sensor 9 or the detected object 10 based on the detected state of the detected object 10 received from the car controller 11, the current position of the car 1, and the position (lower end position) of the detected object 10 at each floor stored in the floor position memory 208. Specifically, it is determined that there is an abnormality in the detection sensor 9 or the detected body 10 that the detection sensor 9 does not detect the detected body 10 when the current car position exists between the lower end position of the detected body 10 on any floor and a position higher than the lower end position by the length of the detected body 10, and that the detected body 10 is detected when the car position is out of the above range. If it is determined that an abnormality is detected (yes), the process proceeds to step S406, and if it is not detected (no), the process proceeds to step S407.
Step S406: when it is determined that there is an abnormality in the detection sensor 9 or the object 10, the controller 14 reduces the rotation speed of the motor 4 to slowly decelerate and stop the car 1. After stopping, the operation of the elevator is stopped. The present flow ends after step S406.
Step S407: the controller 14 determines whether or not a log of the information on the detection state stored in the detection state memory 203 is received from the car controller 11 (transmitted at step S305). If the reception is received (yes), the process proceeds to step S408, and if the reception is not received (no), the present flow ends.
Step S408: the detected abnormality determination unit 206 determines an abnormality of the detection sensor 9 or the object 10 during occurrence of a communication abnormality based on the log of the detection state received from the car controller 11, the log of the car position information stored in the car position memory 209, and the information of the lower end position of the object 10 stored in each floor of the floor position memory 208. In step S405, the detection state is replaced with the detection state before "(N) ms", and the determination is performed by the logic of replacing the car position with the car position before "(N) ms" (N is a natural number), and the determination is performed for all the logs. If it is determined that there is an abnormality in any of the logs (yes), the process proceeds to step S409, and if not (no), the process proceeds to step S410.
Step S409: the controller 14 reduces the rotation speed of the motor 4 to slowly decelerate and stop the car 1. After stopping, the operation of the elevator is stopped. After step S409, the process proceeds to step S411.
Step S410: the controller 14 resumes operation of the elevator. When this step is reached, if a communication abnormality is detected before 1 cycle, the controller 14 stops the operation of the elevator in step S404. In steps S405 and S408, it is determined that the detection abnormality has not occurred at the present time and during the communication abnormality, and therefore, the operation of the elevator is restarted. After step S410, the process proceeds to step S411.
Step S411: the controller 14 deletes (clears) all the logs of the car position information stored in the car position memory 209. After that, the present flow is ended.
As described above, in the present embodiment, the abnormality of the communication or the sensor is detected, and the car is put in the stopped state. In this way, in the case of communication abnormality, the car controller 11 stores a log of information on the detected state in the detected state memory 203 (step S302), the controller 14 stores a log of information on the car position in the car position memory (step S402), and after the communication returns to normal, the controller 14 determines the detection abnormality using these logs (step S408), thereby enabling the detection abnormality in the course of the communication abnormality to be found.
The above embodiments are described in detail to explain the present invention easily and understandably, and the present invention is not limited to having all the structures described. For example, the encoder 8 is provided in the speed governor 7, but may be provided in the motor 4.
Description of reference numerals
1 \8230, a car 4 \8230, a motor 8 \8230, a coder 9 \8230, a detection sensor 10 \8230, a detected body 11 \8230, a car controller 14 \8230, a controller 201 \8230, a detection judgment part 202 \8230, a car controller internal communication judgment part 203 \8230, a detection state memory 204 \8230, a car position calculation part 205 \8230, a controller internal communication judgment part 206 \8230, a detection abnormity judgment part 208 \8230, a floor position memory 209 \8230anda car position memory.
Claims (8)
1. An elevator system is provided with: a car which ascends and descends in an ascending and descending channel, a detection sensor which is arranged on the car, and a detected object which is arranged in the ascending and descending channel and is detected by the detection sensor,
it is characterized in that the preparation method is characterized in that,
the elevator system is provided with:
an encoder that outputs a signal according to the lifting of the car;
a controller that calculates a position of the car based on a position of the detected body provided at each floor and a signal of the encoder, and stores the calculated position of the car from a predetermined time to a present time; and
a car controller that stores a log of a detection state of the detected object detected by the detection sensor from a predetermined time ago to a present time, and transmits the detection state of the detected object to the controller,
when a communication abnormality occurs between the controller and the car controller, the controller determines an abnormality of the detection sensor or the detected object during the occurrence of the communication abnormality based on the log of the detected state of the detected object, the log of the position information of the car, and the position information of the detected object provided on each floor.
2. Elevator system according to claim 1,
and stopping the car when the detection sensor or the detected body is abnormal.
3. Elevator system according to claim 1,
the car controller stores a detection state of the detected object detected by the detection sensor from the present to a predetermined time when a communication abnormality with the controller occurs, and transmits the stored detection state of the detected object to the controller when the communication abnormality is eliminated.
4. Elevator system according to claim 3,
the car controller deletes the stored log relating to the detection state of the detected object after transmitting the stored detection state of the detected object to the controller.
5. Elevator system according to claim 1,
the controller determines an abnormality of the detection sensor or the detected body based on the detection state of the detected body received from the car controller, the current position of the car, and the position of the detected body provided at each floor.
6. Elevator system according to claim 3,
the controller determines whether or not a log of the detected state of the detected body is received from the car controller, and determines an abnormality of the detection sensor or the detected body in the process of occurrence of a communication abnormality when the log of the detected state of the detected body is received.
7. Elevator system according to claim 6,
and stopping the car when the detection sensor or the detected body is abnormal.
8. Elevator system according to claim 7,
the controller deletes the stored log of the position information of the car after stopping the car.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/040016 WO2021070325A1 (en) | 2019-10-10 | 2019-10-10 | Elevator system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114555506A CN114555506A (en) | 2022-05-27 |
| CN114555506B true CN114555506B (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980101207.9A Active CN114555506B (en) | 2019-10-10 | 2019-10-10 | Elevator system |
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| Country | Link |
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| JP (1) | JP7289360B2 (en) |
| CN (1) | CN114555506B (en) |
| WO (1) | WO2021070325A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951517A (en) * | 2011-08-18 | 2013-03-06 | 株式会社日立制作所 | Controller for elevator |
| JP2018002387A (en) * | 2016-07-01 | 2018-01-11 | 株式会社日立製作所 | Elevator device and program |
| CN108163650A (en) * | 2016-11-18 | 2018-06-15 | 株式会社日立大厦系统 | Elevator control gear and elevator control method |
| CN108792873A (en) * | 2017-04-28 | 2018-11-13 | 东芝电梯株式会社 | Elevator wireless communication system |
| CN109071150A (en) * | 2016-03-30 | 2018-12-21 | 株式会社日立制作所 | Elevator device |
| CN109850705A (en) * | 2017-11-30 | 2019-06-07 | 株式会社日立制作所 | Controller for elevator |
-
2019
- 2019-10-10 CN CN201980101207.9A patent/CN114555506B/en active Active
- 2019-10-10 WO PCT/JP2019/040016 patent/WO2021070325A1/en active Application Filing
- 2019-10-10 JP JP2021551040A patent/JP7289360B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951517A (en) * | 2011-08-18 | 2013-03-06 | 株式会社日立制作所 | Controller for elevator |
| CN109071150A (en) * | 2016-03-30 | 2018-12-21 | 株式会社日立制作所 | Elevator device |
| JP2018002387A (en) * | 2016-07-01 | 2018-01-11 | 株式会社日立製作所 | Elevator device and program |
| CN108163650A (en) * | 2016-11-18 | 2018-06-15 | 株式会社日立大厦系统 | Elevator control gear and elevator control method |
| CN108792873A (en) * | 2017-04-28 | 2018-11-13 | 东芝电梯株式会社 | Elevator wireless communication system |
| CN109850705A (en) * | 2017-11-30 | 2019-06-07 | 株式会社日立制作所 | Controller for elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021070325A1 (en) | 2021-04-15 |
| JP7289360B2 (en) | 2023-06-09 |
| JPWO2021070325A1 (en) | 2021-04-15 |
| CN114555506A (en) | 2022-05-27 |
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