CN109132756A - Lift appliance and its control method - Google Patents
Lift appliance and its control method Download PDFInfo
- Publication number
- CN109132756A CN109132756A CN201810442659.0A CN201810442659A CN109132756A CN 109132756 A CN109132756 A CN 109132756A CN 201810442659 A CN201810442659 A CN 201810442659A CN 109132756 A CN109132756 A CN 109132756A
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- CN
- China
- Prior art keywords
- encoder
- carriage
- controlling
- lift appliance
- lifting
- 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
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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
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The present invention provides a kind of can not be influenced by encoder type to detect the lift appliance of the failure of encoder and its control method.The lift appliance of position for controlling carriage includes: encoder, the rotation of rotary shaft that encoder detection and the movement of carriage are associated and rotate；Brake apparatus, the application position maintain the resting state of carriage；And apparatus for controlling of lifting, the apparatus for controlling of lifting detects the abnormal omen of encoder movement, apparatus for controlling of lifting obtained within the stipulated time after brake apparatus maintains carriage to stop, the encoder pulse number counted by encoder, when encoder pulse number is greater than preset threshold value, it is judged as that abnormal omen occurs in encoder movement.
Description
Technical field
The present invention relates to a kind of lift appliance and its control methods, such as the electricity suitable for having used the direct-connected encoder of axis
Ladder device.
Background technique
Lift appliance has the encoder for detecting its car position.If generating error in the position detection of carriage,
Carriage can not be made to rest in correct stop position, so the failure of encoder will cause accident.
Therefore, it when inspecting periodically lift appliance, checks that encoder is important project, and detects its abnormal method and want
Higher precision is sought, so operation is many and diverse.
For example, disclosing following invention in patent document 1: a kind of lift appliance will be formed with the encoder of output pulse
The roller of one is pressed into the rotary body rotated according to the movement of lift car and detects position, in the lift appliance, is sending out
Pulse more than raw regulation generates abnormal signal when changing.
Existing technical literature
Patent document
Patent document 1: Japanese Patent Laid-Open 11-79587 bulletin
Summary of the invention
The technical problems to be solved by the invention
The invention recorded in patent document 1 is become using the operation umber of pulse between specific position caused by being worn due to roller
Change, to detect the exception of encoder.Accordingly, there exist have the invention recorded in patent document 1 to may be only available for using to pass through pressing
Roller carries out this problem of the lift appliance of encoder of position detection.Certainly, can not also be suitable for using the volume direct-connected with axis
The lift appliance of code device.
The present invention is developed in view of the above problem, it is intended that propose a kind of do not influenced by encoder type and
The lift appliance and its control method of the failure of encoder can be detected.
Technical scheme applied to solve the technical problem
In order to solve the problem, the present invention provides a kind of lift appliance, which controls the position of carriage, packet
It includes: encoder, the rotation for the rotary shaft that encoder detection is associated and rotates with the movement of carriage；Brake apparatus, the system
Dynamic device maintains the resting state of carriage；And apparatus for controlling of lifting, the apparatus for controlling of lifting detect the remarkable action of encoder
Omen, apparatus for controlling of lifting obtain brake apparatus maintain carriage stop after stipulated time in, counted by encoder
Encoder pulse number it is abnormal to judge that the movement of encoder occurs if encoder pulse number is greater than preset threshold value
Omen.
In addition, the present invention provides a kind of control method of lift appliance, the control method control carriage of the lift appliance
Position, lift appliance include encoder, the rotation for the rotary shaft that encoder detection is associated and rotates with the movement of carriage
Turn；Brake apparatus, the brake apparatus maintain the resting state of carriage；And apparatus for controlling of lifting, apparatus for controlling of lifting detection
The control method of the omen of the remarkable action of encoder, the lift appliance is equipped with following steps: step 1 is rapid, in step 1 is rapid,
Apparatus for controlling of lifting obtained within the stipulated time after brake apparatus maintains carriage to stop, the encoder counted by encoder
Umber of pulse；And second step, in second step, if encoder pulse number is greater than preset threshold value, elevating control dress
It sets and judges that abnormal omen occurs in the movement of encoder.
Invention effect
By means of the invention it is possible to realize not by encoder type influenced and can detect the failure of encoder lift appliance and
Its control method.
Detailed description of the invention
Fig. 1 is the figure for illustrating lift appliance described in present embodiment.
Fig. 2 is the logic diagram of control device described in present embodiment.
Fig. 3 is the timing diagram of the processing of abnormality detection described in present embodiment.
Fig. 4 is the flow chart of the processing of abnormality detection described in present embodiment.
Specific embodiment
Referring to the following drawings, a kind of embodiment that the present invention will be described in detail.
(1) structure of lift appliance described in present embodiment
In Fig. 1,1 indicates the lift appliance of present embodiment as a whole.The lift appliance 1 is configured to be wound in traction machine 2
Main rope 3 one end install carriage 4, and the another side of main rope 3 install counterweight 5.
Traction machine 2 is to be controlled to carry out lifting driving to carriage 4 by apparatus for controlling of lifting 6, stops carriage 4 in office
The elevating mechanism of the stop position of meaning.In addition, being set between counterweight 5 and traction machine 2 in order to avoid counterweight 5 and carriage 4 bump against
There is deflector sheave 7.
Traction machine 2 is as shown in Fig. 2, not shown governor (calling it as sheave below), rotary shaft 11, encoder
12, the 1st brake apparatus 13A, the 2nd brake apparatus 13B (calling it as brake apparatus 13A, 13B below), the 1st brake check switch
14A and the 2nd brake check switch 14B (calling it as brake check switch 14A, 14B below) is constituted.
Rotary shaft 11 is directly connected to the motor (not shown) of the power source as sheave, sends out with from car call button 8
The lifting of carriage 4 corresponding to calling out is associated and rotates.In the inside of the rotary shaft 11, it is fixed with encoder 12,
It is the angular position sensor for exporting the swing offset ω of rotary shaft 11 as digital signals such as pulses.
Brake apparatus 13A, 13B rotate away from sheave in rotary shaft 11, release the on-position of sheave.In addition, braking
Device 13A, 13B control sheave according to the instruction that apparatus for controlling of lifting 6 issues, to maintain the resting state of carriage 4.Braking inspection
Look into switch 14A, 14B according to brake apparatus 13A, 13B whether with sheave contact come be confirmed whether maintain resting state.
Apparatus for controlling of lifting 6 is by having CPU15 (Central Processing Unit: central processing unit) and storage
The computer installation of the messaging resources such as device 16 is constituted.CPU15 is the place for administering the action control of entire apparatus for controlling of lifting 6
Manage device.In addition, memory 16 is for example made of semiconductor storage, for saving various programs, following brake releases label
Etc. necessary informations.By execute memory 16 in store following brake control modules 17, brake check switch detection module 18,
The program of pulse detection module 19 and abnormality detection module 20 etc., carries out various processing.
But although apparatus for controlling of lifting 6 is in the pulse for detecting carriage 4 when carrying out lifting action by encoder 12
Its speed has been grasped, but the pulse after not grasping the stop of carriage 4, after the resting state of carriage 4 is maintained by brake apparatus 13.
Apparatus for controlling of lifting 6 be may be considered as by referring to the arteries and veins after the resting state for maintaining carriage 4 by brake apparatus 13
Punching can check the movement of encoder 12 when carriage 4 is stopped.And, it is also considered that there is apparatus for controlling of lifting 6 in encoder 12
Movement when there is abnormal omen, can be supervised via alarm device 10 to central monitoring position for the outside that lift appliance 1 is arranged in etc.
The alarm of exception information is sent depending on the facility of lift appliance 1.
Therefore, in the lift appliance 1 of present embodiment, in apparatus for controlling of lifting 6 equipped with abnormal detection function.It is practical
On, for the lift appliance 1 of present embodiment after the stop of carriage 4, apparatus for controlling of lifting 6 passes through the pulse for checking that encoder 12 exports
Number is to judge whether the movement of encoder 12 abnormal omen occurs.
After the stop of carriage 4, when maintaining the on-position of carriage 4 by brake apparatus 13, pass through brake apparatus 13 and sheave
Contact, traction machine 2 vibration to encoder 12 export pulse.When encoder 12 is operating normally and in addition to this coding
When occurring abnormal omen in the movement of device 12, the umber of pulse of the output is different.In addition, occurring in the movement of encoder 12 abnormal
Omen refers to, such as the installation condition of the encoders 12 such as loosening of encoder 12 has exception.
For example, the average value of the umber of pulse of the above-mentioned output in the case of being operating normally when preparatory trial operation is recorded as threshold
The umber of pulse of output above-mentioned in the operation is compared by value after carriage 4 is stopped in conventional operation with the threshold value.
As the unit for realizing abnormal detection function as described above, control for brake mould is stored in memory 16
Block 17, brake check switch detection module 18, pulse detection module 19 and abnormality detection module 20.
Making carriage according to the calling issued by car call button 8 when lifting action, brake control module 17 is controlled
Brake apparatus 13A, 13B, to release the on-position of sheave.
It is to obtain brake check switch 14A, 14B from brake check switch 14A, 14B that brake check, which switchs detection module 18,
Whether the program with the braking performance test signal of sheave contact.Pulse detection module 19 is to obtain the journey for the pulse that encoder 12 exports
Sequence.Abnormality detection module 20 is that whether occur the program of abnormal omen in the movement for judge encoder 12.
Using timing diagram shown in Fig. 3, illustrate processing relevant to the abnormality detection processing that abnormality detection module 20 carries out.
Firstly, when obtaining 4 call information of carriage issued from elevator hall, brake control module 17 passes through starting system as shown in Fig. 3 (A)
Dynamic releasing marks issue brake release instruction to brake apparatus 13A, 13B, to release the on-position of sheave.
In addition, brake release is marked with starting and closed state.In the state that brake release is labeled as starting, braking is released
The on-position of device 13A, 13B to sheave.In the state that brake release is labeled as closing, made by brake apparatus 13A, 13B
Sheave is in on-position.
When brake apparatus 13A, 13B receive brake release instruction from brake control module 17, sheave is left.Such as Fig. 3
(B), shown in Fig. 3 (C), brake check switch 14A, 14B make brake apparatus 13A, 13B leave sheave to which detection brakes off.
As shown in Fig. 3 (D), while when releasing the on-position of sheave of brake apparatus 13A, 13B, carriage 4 accelerates to one by motor
Constant speed degree carries out lifting action.
As shown in Fig. 3 (E), pulse detection module 19 is to obtain what encoder 12 exported according to the lifting action of the carriage 4
Pulse.When pulse detection module 19 does not detect pulse in stipulated time T1 (such as 80 milliseconds), brake control module is notified
17 carriages 4 have stopped this case.When carrying out the notice, as shown in Fig. 3 (A), after brake control module 17 is connected to the notice, lead to
Closing brake release label is crossed to issue braking instruction to brake apparatus 13A, 13B, so that sheave is in on-position.
When brake apparatus 13A, 13B receive braking instruction from brake control module 17, with sheave contact.As Fig. 3 (B),
Shown in Fig. 3 (C), brake check switch 14A, 14B detect brake actuating by brake apparatus 13A, 13B and sheave contact.
As shown in Fig. 3 (D), brake check switch detection module 18 detects brake check switch 14A, 14B while detecting
When out this case that brake actuating, judge that carriage 4 is maintaining on-position, sends on-position inspection to abnormality detection module 20
Survey notice.
Pulse when abnormality detection module 20 receives on-position detection notice, to being received from pulse detection module 19
Number is counted.Obtain the pulse in the stipulated time T2 (such as 100 milliseconds) since receiving on-position detection notice
Testing number.In addition, maintaining the state of braking, it is specified that time T2 is set as than for judging stopping for carriage 4 to correctly judge
The stipulated time T1 long leaned on.
As shown in Fig. 3 (E), when encoder 12 is operating normally, in stipulated time T2, such as by pulse detection module 19
Detected umber of pulse is 2.In contrast, as shown in Fig. 3 (F), when there is abnormal omen in the movement of encoder 12,
35 umber of pulses are output to pulse detection module 19 more than umber of pulse when having than the regular event of encoder 12.
Abnormality detection module 20 is the pulse detected when stopping by comparing carriage 4 under threshold value and conventional operation
Number, to judge that the movement of encoder 12 no abnormal omen occurs in being.The threshold value is preset value, such as in test run
Row luck line number time carriage 4, is averaged detected umber of pulse for several times in stipulated time T2.
When abnormality detection module 20 is judged as that abnormal omen occurs in the movement of encoder 12, via alarm device 10, to
There is the alarm of this case that abnormal omen in the movement that central monitoring position sends encoder 12.
(2) abnormality detection is handled
Fig. 4 indicates the abnormality detection processing that abnormality detection module 20 carries out.Routine fortune of the abnormality detection processing in lift appliance 1
Implemented always with specified period in row.
Firstly, abnormality detection module 20 is according to whether receive the on-position that brake check switch detection module 18 is sent
Detection notice, judges whether carriage 4 maintains on-position (S11).Abnormality detection module 20 obtains negative decision in this judgment
When, the processing of step S11 is repeated, until obtaining positive result.
Next, when abnormality detection module 20 receives on-position detection notice, in stipulated time T2 from pulse
The umber of pulse (S12) that detection module 19 receives is counted.
Then, when 20 number of pulses of abnormality detection module is counted, by the umber of pulse and preset specified value into
Row compares, and judges whether the movement of encoder 12 shows abnormal omen (S13), then terminates abnormality detection processing.
In fact, abnormality detection module 20 is judged as that the movement of encoder 12 goes out when the umber of pulse is specified value or more
Now abnormal omen, via alarm device 10, there are this feelings of the omen of exception in the movement for sending encoder 12 to central monitoring position
The alarm of condition.
In contrast, when the umber of pulse is less than specified value, abnormality detection module 20 is judged as the movement of encoder 12
Omen without exception continues the movement for monitoring encoder 12.
(3) effect of present embodiment
As described above, in the lift appliance of present embodiment 1, apparatus for controlling of lifting 6 is based on the braking after carriage is stopped
The umber of pulse detected in the stipulated time T2 of maintenance state, judges whether the movement of encoder 12 abnormal omen occurs.
Therefore, it according to this lift appliance 1, can not be compiled without supplementing device only with hardware configuration as in the past
Code device patterns affect and be not necessarily to special Inspection, detect encoder fault in conventional operation.
(4) other embodiments
In addition, being to be connect for abnormality detection module 20 referring to from brake check switch detection module 18 in the above-described embodiment
The situation for receiving the pulse detection number in the stipulated time T2 that on-position detection notice starts is illustrated, but the present invention is not
It is defined in this, since abnormality detection module 20 be also referred in the stipulated time detecting that brake release label becomes closing
Pulse detection number.
Label declaration
1 ... lift appliance, 2 ... traction machines, 3 ... main ropes, 4 ... carriages, 5 ... counterweights, 6 ... lifting controls
Device processed, 7 ... deflector sheaves, 8 ... car call buttons, 10 ... alarm devices, 11 ... rotary shafts, 12 ... codings
Device, 13A, 13B ... brake apparatus, 14A, 14B ... brake check switch, 15 ... CPU, 16 ... memories, 17 ...
Brake control module, 18 ... brake checks switch detection module, 19 ... pulse detection modules, 20 ... abnormality detection moulds
Block.
Claims (3)
1. a kind of lift appliance controls the position of carriage, which is characterised by comprising:
Encoder, the rotation for the rotary shaft that encoder detection is associated and rotates with the movement of the carriage；
Brake apparatus, the brake apparatus maintain the resting state of the carriage；
Apparatus for controlling of lifting, the apparatus for controlling of lifting detect the abnormal omen of the encoder movement,
The apparatus for controlling of lifting obtained within the stipulated time after stopping the carriage by the brake apparatus, by
The encoder pulse number that the encoder is counted, the case where the encoder pulse number is greater than preset threshold value
Under, it is judged as that the abnormal omen occurs in the movement of the encoder.
2. lift appliance as described in claim 1, which is characterized in that
It further include alarm device, the external alarm that sends the abnormal omen of the alarm device to the lift appliance.
3. a kind of control method of lift appliance is the control method for controlling the lift appliance of position of carriage, which is characterized in that
The lift appliance includes
Encoder, the rotation for the rotary shaft that encoder detection is associated and rotates with the movement of the carriage；
Brake apparatus, the brake apparatus maintain the resting state of the carriage；
Apparatus for controlling of lifting, the apparatus for controlling of lifting detect the abnormal omen of the encoder movement, the control of the lift appliance
Method processed includes:
Step 1 is rapid, and in the step 1 is rapid, the apparatus for controlling of lifting acquisition stops the carriage by the brake apparatus
In the stipulated time rearward, the encoder pulse number that is counted by the encoder；
Second step, in the second step, in the case where the encoder pulse number is greater than preset threshold value, the liter
Drop control device is judged as that the abnormal omen occurs in the movement of the encoder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-119998 | 2017-06-19 | ||
| JP2017119998A JP2019001649A (en) | 2017-06-19 | 2017-06-19 | Elevator device and control method of the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109132756A true CN109132756A (en) | 2019-01-04 |
| CN109132756B CN109132756B (en) | 2020-09-15 |
Family
ID=64801702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810442659.0A Active CN109132756B (en) | 2017-06-19 | 2018-05-10 | Elevator device and control method thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019001649A (en) |
| CN (1) | CN109132756B (en) |
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|---|---|---|---|---|
| JP2003172637A (en) * | 2001-12-06 | 2003-06-20 | Nippon Reliance Kk | Pulse count anomaly detection circuit for pulse encoder |
| CN101833049A (en) * | 2009-02-09 | 2010-09-15 | 富士电机系统株式会社 | Abnormality monitoring apparatus |
| JP2011026075A (en) * | 2009-07-27 | 2011-02-10 | Hitachi Ltd | Elevator control device |
| CN102762481A (en) * | 2010-02-19 | 2012-10-31 | 三菱电机株式会社 | Elevator device |
| CN103076036A (en) * | 2012-12-31 | 2013-05-01 | 深圳市配天数控科技有限公司 | Incremental encoder disconnection detection method and system |
| CN103308092A (en) * | 2012-03-14 | 2013-09-18 | 欧姆龙株式会社 | Monitoring device and monitoring method for rotary encoder |
| CN103308078A (en) * | 2012-03-15 | 2013-09-18 | 欧姆龙株式会社 | Rotary encoder and method of detecting abnormality of rotary encoder |
| CN104229578A (en) * | 2013-06-12 | 2014-12-24 | 株式会社日立制作所 | Coder anomaly detection device and elevator device employing coder anomaly detection device |
| CN104391517A (en) * | 2014-11-25 | 2015-03-04 | 无锡科思电子科技有限公司 | Water wheel overspeed control method based on output pulse frequency |
| CN106707937A (en) * | 2017-01-11 | 2017-05-24 | 山信软件股份有限公司 | Rotary encoder abnormal state on-line monitoring method and device |
-
2017
- 2017-06-19 JP JP2017119998A patent/JP2019001649A/en active Pending
-
2018
- 2018-05-10 CN CN201810442659.0A patent/CN109132756B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003172637A (en) * | 2001-12-06 | 2003-06-20 | Nippon Reliance Kk | Pulse count anomaly detection circuit for pulse encoder |
| CN101833049A (en) * | 2009-02-09 | 2010-09-15 | 富士电机系统株式会社 | Abnormality monitoring apparatus |
| JP2011026075A (en) * | 2009-07-27 | 2011-02-10 | Hitachi Ltd | Elevator control device |
| CN102762481A (en) * | 2010-02-19 | 2012-10-31 | 三菱电机株式会社 | Elevator device |
| CN103308092A (en) * | 2012-03-14 | 2013-09-18 | 欧姆龙株式会社 | Monitoring device and monitoring method for rotary encoder |
| CN103308078A (en) * | 2012-03-15 | 2013-09-18 | 欧姆龙株式会社 | Rotary encoder and method of detecting abnormality of rotary encoder |
| CN103076036A (en) * | 2012-12-31 | 2013-05-01 | 深圳市配天数控科技有限公司 | Incremental encoder disconnection detection method and system |
| CN104229578A (en) * | 2013-06-12 | 2014-12-24 | 株式会社日立制作所 | Coder anomaly detection device and elevator device employing coder anomaly detection device |
| CN104391517A (en) * | 2014-11-25 | 2015-03-04 | 无锡科思电子科技有限公司 | Water wheel overspeed control method based on output pulse frequency |
| CN106707937A (en) * | 2017-01-11 | 2017-05-24 | 山信软件股份有限公司 | Rotary encoder abnormal state on-line monitoring method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109132756B (en) | 2020-09-15 |
| JP2019001649A (en) | 2019-01-10 |
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