CN1131636A - Position detecting apparatus for elevator - Google Patents
Position detecting apparatus for elevator Download PDFInfo
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- CN1131636A CN1131636A CN95119711A CN95119711A CN1131636A CN 1131636 A CN1131636 A CN 1131636A CN 95119711 A CN95119711 A CN 95119711A CN 95119711 A CN95119711 A CN 95119711A CN 1131636 A CN1131636 A CN 1131636A
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- Indicating And Signalling Devices For Elevators (AREA)
- Elevator Control (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The prevent invention relates to a detection device for detecting the position of an elevator, wherein a battery emergency device is arranged, when the power supply failure is occurred or the output level of a power supply device is decreased under a preset level, the battery emergency device replaces the power supply device to persistently supply the power supply, thus the relative position of an elevator car is uninterruptedly and persistently detected. When the power supply is restored after the power failure is occurred, the elevator car moves according to the same moving direction before the power failure. According to the situation, if the absolute position of the elevator car is detected by an adjacent absolute position detection device, the relative position and the absolute position are considered synthetically, consequently the elevator is restored the normal moving at once.
Description
The present invention relates to the position detecting device of elevator, it still can detect the current location of lift car when power fail or software are made mistakes.
For the safe operation of elevator, be very important to the detection of lift car current location, therefore, the position detecting device of lift car is the basis of elevator operation and control system thereof.Habitual elevator car position detecting device comprises a mechanical location detecting device that adopts screw device, it is along with car moving and move on elevator operation guide rail, a kind of indication of dwindling by predetermined ratio is provided, and a kind of electronic method that is used to detect elevator position, promptly when having moved a fixed range, lift car produces a pulse by pulse generating unit, and the pulse signals numeration.Also having a kind of method is when restoring electricity after power fail, calculates its slippage according to the parameter of counting in advance according to the inertia range ability of lift car and the actual speed of deceleration of electrons, so that detect the position of lift car more accurately.Under normal operating condition, this method can detect the position of lift car very effectively, and this is because even power fail takes place, still can calculate sliding distance with preset parameters during elevator cage operation.
Fig. 1 is the block diagram of the habitual position detecting device of lift car, and it comprises lift car 1; Electrical motor 2 is used to produce the power that drives lift car; Rotary encoder 3 is used to detect the revolution of electrical motor 2 and the impulse singla of corresponding its revolution of output; Waveform forming device 4 is used for the impulse singla that rotary encoder 3 provides is shaped to the waveform that is fit to the digital circuit processing; Pulse detecting equipment 5, the pulse pattern that is used for Waveform forming device 4 is provided is counted, and carries out the pulse time modulation; The signal that is provided by pulse detecting equipment 5 is provided controller 6, is used to detect the current location of lift car.
The principle of work of the habitual elevator car position detecting device with said structure below will be described.When the passenger is sending one when requiring the hall call of using escalator or sending a car call in lift car in the entrance hall, controller 6 just responds this calling and removes driving motor 2, the rising of control lift car 1 or the operation that descends, thus make lift car 1 arrive designated floor.Simultaneously, rotary encoder 3 is exported the corresponding pulse of revolution with electrical motor 2, and carries out shaping by the waveform of Waveform forming device 4 paired pulses, offers pulse detecting equipment 5 then.The pulse count of the signal that 5 pairs of Waveform forming devices 4 of pulse detecting equipment provide is counted, and pulse is offered controller 6, is identified the position of lift car 1 then according to the counting of pulse by controller 6.
When controller 6 has been read the counter value " A " of pulse detecting equipment 5 in a predetermined period (for example 10ms), and to identify this value " A " be after the value of an increase, and it is an ascent direction with the movement direction decision of lift car 1 just.Like this, controller 6 just is added to count value on the current orientation values, thereby calculates the current location value of lift car 1.Yet if the count value of pulse detecting equipment 5 " A " reduces, controller 6 is the count value of read pulse detecting device 5 " B " in following one-period just.If value " B " does not reduce, that is to say that do not reduce if count value promptly increases also, controller 6 just judges that car 1 stops.During this period,, just judge that car 1 is descending, thereby controller 6 just deducts this count value from current orientation values, thereby calculate the current location value of lift car 1 if count value " B " reduces.
On the other hand, when power fail took place, the control system of elevator just started a magnetic brake, so that stop any of car to move.In this case, (with 300ms) starts magnetic brake owing to need a period of time behind power fail, because the fault of power supply, car miles of relative movement during this period of time can't be detected, and this distance should obtain according to a predetermined table.In addition, even car moves owing to the slip of car or the stretching of hawser,, therefore just should when power up, calculate current location during power fail according to the sliding distance table of being scheduled to owing to be difficult to measure its miles of relative movement.
The state of power fail is meant the elevator control that is necessary and the cut state of power supply of drive element of offering.Like this, in order to control the operation of elevator, when being predicted, error state may cause a kind of situation of danger close.For example; if the transient fault of power supply has continued several milliseconds to hundreds of ms; some electronics or electric circuit can continuous firings and can not be perceived the faulty condition of power supply; other electronics or electric circuit then may the perception power supply fault and operate a protective circuit, in other words lost efficacy so as not to its original function.Therefore, if the power fail of generation from several ms to a few hours estimates that by predicting various states the position of car is very difficult, be according to the actual fact impossible.More the situation of groove is, is used for the mechanical specialities of spring of car and the magnetic force of magnetic plate and all can changes, and the different machines that makes different actually occasions install has different deviations.In addition, the variation of the car load weight that causes owing to the variation of the quantity of elevator passenger can cause very big error at estimation inertia range ability with during the miles of relative movement during abending.
Therefore, for fear of these shortcomings and the method below having used.That is exactly with the low speed that is different from normal operating speed cage to be moved to the door district of a nearest floor immediately when restoring electricity behind power fail, in this position the value of a detected value and a reference table is compared.Relatively the time, if the difference between two values is within the tolerance limit, elevator is just got back to normal operating condition and is recovered its operation.Yet, the problem that can occur other in this case, that is to say, if the difference between two values has exceeded the limit of tolerance limit, or power fail when being in the position of crossing over floor, car has taken place, thereby when the floor value is changed, or when error in data occurring, just need regroup reference table owing to noise or the damage of the software program of control elevator operation.
Even the objective of the invention is to provide a kind of any mobile elevator position detector that when power fail, also can accurately detect lift car.
To achieve these goals, position detecting device of the present invention comprises a rotary encoder, is used to detect the revolution of the driving motor of lift car, and exports the different impulse singla of a plurality of phase places; A Waveform forming device is used for the different impulse singla of phase place of rotary encoder output is shaped to the waveform that is fit to by the digital circuit processing; A pulse totalizer is used for a plurality of impulse singlas that Waveform forming device provides are counted; A controller is used at a predetermined period counted number of pulses that the pulse counting machine provides being compared with a reference value; And battery-backup mechanism is used in schedule time during power fail to rotary encoder Waveform forming device and pulse totalizer power supply.
The structure and the operation of elevator position detector of the present invention are described with reference to the accompanying drawings below in conjunction with embodiment.
Brief Description Of Drawings
Fig. 1 is the block diagram of the habitual position detecting device of lift car;
Fig. 2 is the diagram of circuit of the elevator car position detecting operation of Fig. 1;
Fig. 3 is the block diagram of lift car relative position detecting device of the present invention;
Fig. 4 is the local detail of Fig. 3;
Fig. 5 is the detailed diagram of battery-backup mechanism among Fig. 3;
Fig. 6 is the operational flowchart that is used to detect elevator car position among Fig. 3; And
Fig. 7 is the block diagram of a lift car absolute position detection device of the present invention.
Fig. 3 is the block diagram of a lift car relative position detecting device of the present invention, and it comprises lift car 1; Be used to produce the electrical motor 2 of the propulsive effort of lift car; Rotary encoder 3 is used to detect the revolution of electrical motor 2 and the impulse singla that output has two outs of phase (A and B) impulse singla; The signal shaping that Waveform forming device 10 is used for that rotary encoder 3 is provided becomes to be fit to the waveform handled with digital circuit; Two impulse singlas that pulse totalizer 20 is used for Waveform forming device 10 is provided (A with B mutually) counting; The current location of the signal detection lift car 1 that provides according to pulse totalizer 20 is provided a controller 40; And a battery-backup mechanism 30, be used in the schedule time during power fail to rotary encoder 3 Waveform forming device 10 and pulse totalizer 20 power supplies.
Fig. 7 is a lift car absolute position detection device of the present invention, and it comprises car 1; Be used to control the controller 40 of whole operations of elevator; Be located at each floor of hoist trunk 52 or the absolute position detection device 57 at several floors place, be used for absolute location at car 1 time output car 1 by absolute position detection device 57; Hawser 54 is used for that the guide rail 53 along hoist trunk 52 makes car 1 perpendicular movement under the driving action of electrical motor; Be connected the floor indicator board 55 at each place, entrance hall of hoist trunk 52, be used to indicate each floor; Be connected the sensor 56 on the desired location of car 1, be used to detect floor indicator board 55; And one communication line 58 be used for giving controller 40 output signal of sensor 56 and absolute position detection device 57.
In the relative position detecting device, when car 1 under the operation of electrical motor 2 by normal mode when operation, rotary encoder 3 produces the impulse singla of two outs of phase (A with B mutually) of respective motor 2 revolutions.When impulse singla was imported into Waveform forming device 10, it eliminated the high frequency noise that mixes with two impulse singlas respectively to have low-pass filter 11A that a register and cond constitute and 11B in the Waveform forming device 10 separately.Then, the first and second comparator 12A and 12B receive low-pass filter 11A and the 11B output signal and first and second reference voltage Vref l and the Vref2 separately respectively, and convert the output signal of low-pass filter 11A and 11B to accurate waveform respectively, then by the shake of each Schmidt trigger 13A and 13B erasure signal waveform.
20 pairs of impulse singlas from Waveform forming device 10 of pulse totalizer are sampled, and carry out the increasing or decreasing counting according to the rising or the decline pulse signals of car 1, to store its count value.That is to say that the lifting/lowering recognizer 21 of pulse totalizer 20 is discerned the lifting/lowering direction of input pulse signals, and identification signal and input pulse are offered pulse totalizer 22 together.Pulse totalizer 22 is carried out the increasing or decreasing counting according to the lifting/lowering identification signal pulse signals of coming self-lifting/lowering recognizer 21, so that the output controlling valu.The count value that one 16 or 32 s' data buffer 23 storages are provided by pulse totalizer 22.
As shown in Figure 5, battery-backup mechanism 30 comprises a battery charger 31, and its checks the voltage of battery (not shown), thus only in predetermined voltage range to battery charge, be used under the situation of power fail, providing backup power, and prolong the service life of rechargeable battery; One power fail detects and counting assembly 32 is used for checking whether power supply has fault; One DC/DC conv 33 be used for according to battery charger 31 and power fail detect and an output signal of counting assembly 32 to rotary encoder 3, Waveform forming device 10 and pulse totalizer 28 provide the backup power of battery.
Two reference voltage Vref 3 of reference voltage generator 31A output and the Vref4 of battery charger 31, and battery voltage detector 31B output is through the cell pressure of dividing potential drop.Battery charge controller 31C comprises two comparators, i.e. the 3rd comparator and the 4th comparator.Reference voltage Vref 3 is provided for the reverse input end of the 3rd comparator (not shown), and the cell pressure of the dividing potential drop that battery voltage detector 31B provides is provided for the input end in the same way of the 3rd comparator, compare two voltages with the 3rd comparator, so that detect the maximum charging voltage of battery.Simultaneously, reference voltage Vref 4 is provided for the reverse input end (not shown) of the 4th comparator, and the cell pressure of dividing potential drop is provided for the input end in the same way of the 4th comparator, compares two voltages with the 4th comparator, so that detect sparking voltage.Correspondingly, in battery charge controller 31C, according to the output signal of the 4th comparator, if detect the sparking voltage of battery, just to battery charge, otherwise, according to the output of the 3rd comparator,, just stop charging operations to battery if detected the maximum charging voltage of battery.Equally, battery charge controller 31C control battery can suitably be charged, and charging valtage is outputed to DC/DC conv 33.Therefore, charging repeats in the identical scope of the outgoing level of two comparators with discharge, thereby the charge and discharge cycles number of times of battery is reduced relatively, so just can prolong the service life of battery.
Under normal circumstances, supply unit (the SMPS: outgoing level switching type power supply) that power fail detects and counting assembly 32 is checked to the elevator device power supply, if the outgoing level of supply unit drops under the predetermined level, power fail detects and counting assembly 32 is just exported a control signal to DC/DC conv 33.For this reason, detect the output voltage of supply unit with the power voltage detecter 32A of power supply fault detection and counting assembly 32.If output is normal voltage, just do not provide control signal, and DC/DC conv 33 just can not receive any output signal of battery charger to DC/DC conv 33, therefore just can not export the standby voltage of battery.Yet if the output voltage of mains connection set hinders for some reason or other reasons drops to below the predetermined level, power fail detects and the power voltage detecter 32A of counting assembly 32 just detects the decline of level and exports a control signal to DC/DC conv 33.Correspondingly, DC/DC conv 33 is just exported the output voltage of battery charger 31 through amplifying the back.Therefore, when power fail, battery-backup mechanism 30 is just to rotary encoder 3, and Waveform forming device 10 and pulse totalizer 20 are powered, and control the time of DC/DC conv 33 output standby voltages with counting machine 32B.Correspondingly, under normal circumstances, to coder 3 power supply, when power fail, then provide one to be amplified to the voltage of 15V, so that can detect the relative position of car 1 constantly from about 5V from DC/DC conv 33 from supply unit.
On the other hand, elevator absolute position detection device of the present invention can provide such information to controller 40, promptly in the time of normal operation, when car 1 along hoist trunk 52 operation during through absolute position transducers 57, the floor of the process of car 1 can be provided, and from following table, obtain current absolute location value.The output signal value of absolute position detection device 57 can make controller 40 determine the safety of operation when normal operation.In addition, the elevator continuous running for a long time after because the error of sliding and to cause, the difference between the output valve of rotary encoder 3 and car 1 actual position can increase, in order periodically to proofread and correct this error, use the output signal of absolute position detection device 57.
Table
Floor absolute position detection device absolute location value
(example)
N＋1 N＋1 (N＋1)×1000
N N N×1000
…… …… ……
2 2 2000
1 1 1000
Yet, if at elevator run duration generation power fail and when having cut off the power supply of controller 40, owing to difference occurs between the positional value that the actual position that slip can make car 1 and controller 40 are indicated.At this moment, when service restoration, car 1 just begins according to its same service direction operation before power fail.When car 1 process absolute position detection device 57, corresponding absolute position detection device 57 just detects car and exports an indication.In case receive the output signal of absolute position detection device 57, controller 40 just detects the absolute location of car 1 according to above-mentioned table.As mentioned above, controller 40 also detects car 1 relative position according to the method for Fig. 3, and absolute location and relative position are combined, so that recover normal operation immediately.
In sum, in elevator position detector of the present invention, detect the relative position and the absolute location of car simultaneously, and particularly when power fail, still can continue to detect its relative position, like this, when power fail or any mistake of software appearance, still can Direct Recognition go out car position, thereby make elevator can recover normal operation immediately.
Claims (7)
1, a kind of position detecting device of elevator comprises:
Rotary encoder, the impulse singla that is used to detect the revolution of the electrical motor that drives lift car and exports a plurality of outs of phase;
Waveform forming device, the impulse singla that is used for out of phase that rotary encoder is provided are shaped to and are fit to the waveform handled with digital circuit;
Pulse counting equipment is used for a plurality of impulse singla numerations that Waveform forming device is provided;
Control setup, the counted number of pulses that is used in predetermined period the pulse counting assembly being provided is compared with a reference value, according to the described position of relatively detecting lift car; And
Battery-backup mechanism is used in the schedule time during power fail to rotary encoder, Waveform forming device and the power supply of arteries and veins counting assembly.
2, according to the device of claim 1, wherein, described Waveform forming device comprises a low-pass filter, and the impulse singla that is used for a plurality of outs of phase that rotary encoder is provided carries out LPF; A discriminator is compared the output signal of low-pass filter with a predetermined reference voltage; And Schmidt trigger is used to eliminate the shake of discriminator output signal.
3, according to the device of claim 1, wherein, described swimming comprises a lifting/lowering means of identification towards counting assembly, is used for discerning increasing/subtracting of output signal pulse count that Waveform forming device provides, and the signal of identification signal and input is exported together; One pulse counting equipment is carried out the increasing or decreasing counting according to the pulse of the lifting/lowering identification signal pulse signals that the lifting/lowering means of identification provides; And one data buffer device be used to store the count value that provides by pulse counting equipment.
4, according to the device of claim 1, wherein, described battery-backup mechanism comprises a battery charger, be used to check the voltage of battery and only in predetermined voltage range to battery charge, and correspondingly export a charging valtage; Detection of one power fail and counting assembly are used to check the outgoing level of supply unit; And one the DC/DC transfer device be used for detecting and the output signal of counting assembly provides the output voltage of battery charger according to power fail.
5, according to the device of claim 4, wherein, described battery charger comprises a VREF (Voltage Reference) generating means, is used to export a plurality of VREF (Voltage Reference); A battery voltage detector is used for dividing potential drop and output cell pressure; An and battery charging control device, if detect the maximum charging voltage of battery, just stop the charging operations of battery, if detect a sparking voltage, just to battery charge, and when the output signal that receives from VREF (Voltage Reference) generating means and battery voltage detector, just export above-mentioned charging valtage.
6, according to the device of claim 4, wherein, described power fail detects and counting assembly comprises a power line voltage detecting device, be used for just often checking the outgoing level of supply unit, and when the output voltage of supply unit drop to a predetermined level when following to control signal of DC/DC transfer device output; And a counting assembly, be used for controlling the time that the battery charger output voltage is provided by the DC/DC transfer device according to the control signal of power line voltage detecting device.
7, according to the device of claim 1, wherein, also comprise the absolute position detection device, it has the predetermined sensor that is located on each floor or several other floors, is used at lift car thus through the absolute location of out-of-date detection lift car.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940030283A KR100206989B1 (en) | 1994-11-17 | 1994-11-17 | Elevator control apparatus |
| KR30283/94 | 1994-11-17 | ||
| KR1019950003100A KR100259496B1 (en) | 1995-02-17 | 1995-02-17 | The position detector for elevator |
| KR3100/95 | 1995-02-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1131636A true CN1131636A (en) | 1996-09-25 |
| CN1047764C CN1047764C (en) | 1999-12-29 |
Family
ID=26630708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95119711A Expired - Fee Related CN1047764C (en) | 1994-11-17 | 1995-11-16 | Position detecting apparatus for elevator |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1047764C (en) |
| MY (1) | MY126287A (en) |
| SG (1) | SG64287A1 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101450762B (en) * | 2007-12-06 | 2010-10-13 | 中国恩菲工程技术有限公司 | Monitoring apparatus for lifting machine |
| CN101058846B (en) * | 2007-06-08 | 2010-11-10 | 武汉钢铁(集团)公司 | Method of determining position information of high-temperature ring annealing furnace steel coil |
| CN101920874A (en) * | 2010-08-27 | 2010-12-22 | 广州永日电梯有限公司 | Automatic control method of freight elevator |
| CN101597000B (en) * | 2009-06-23 | 2011-03-30 | 福建省特种设备监督检验所 | Intelligent detection method and intelligent detection system for operating test of elevator |
| CN102452597A (en) * | 2010-10-14 | 2012-05-16 | 东芝电梯株式会社 | Elevator control device |
| CN103848308A (en) * | 2012-11-29 | 2014-06-11 | 株式会社日立制作所 | Elevator system |
| CN105790739A (en) * | 2015-01-12 | 2016-07-20 | 英飞凌科技股份有限公司 | Protected Switching Element |
| CN107697761A (en) * | 2016-08-08 | 2018-02-16 | 株式会社日立制作所 | Elevator device |
| CN109720951A (en) * | 2017-10-30 | 2019-05-07 | 上海三菱电梯有限公司 | Elevator landing apptss |
| CN110526057A (en) * | 2019-08-20 | 2019-12-03 | 日立电梯（中国）有限公司 | Elevator car position confirms system, method and device |
| CN110867952A (en) * | 2019-12-04 | 2020-03-06 | 广东寰宇电子科技股份有限公司 | Elevator power control system and elevator system |
| CN111983432A (en) * | 2020-09-01 | 2020-11-24 | 无锡卓海科技有限公司 | Simulation test system for wafer position detection device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4501343A (en) * | 1982-10-12 | 1985-02-26 | Otis Elevator Company | Elevator car load and position dynamic gain compensation |
| JP2694484B2 (en) * | 1991-11-22 | 1997-12-24 | 株式会社日立製作所 | Elevator control device |
| CN1024931C (en) * | 1991-11-30 | 1994-06-08 | 浙江丝绸工学院 | Processing technology for short-fibre silk of cocoon garment |
-
1995
- 1995-11-13 MY MYPI9503434 patent/MY126287A/en unknown
- 1995-11-16 CN CN95119711A patent/CN1047764C/en not_active Expired - Fee Related
- 1995-11-17 SG SG1995001855A patent/SG64287A1/en unknown
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058846B (en) * | 2007-06-08 | 2010-11-10 | 武汉钢铁(集团)公司 | Method of determining position information of high-temperature ring annealing furnace steel coil |
| CN101450762B (en) * | 2007-12-06 | 2010-10-13 | 中国恩菲工程技术有限公司 | Monitoring apparatus for lifting machine |
| CN101597000B (en) * | 2009-06-23 | 2011-03-30 | 福建省特种设备监督检验所 | Intelligent detection method and intelligent detection system for operating test of elevator |
| CN101920874A (en) * | 2010-08-27 | 2010-12-22 | 广州永日电梯有限公司 | Automatic control method of freight elevator |
| CN102452597A (en) * | 2010-10-14 | 2012-05-16 | 东芝电梯株式会社 | Elevator control device |
| CN102452597B (en) * | 2010-10-14 | 2015-04-22 | 东芝电梯株式会社 | Elevator control device |
| CN103848308A (en) * | 2012-11-29 | 2014-06-11 | 株式会社日立制作所 | Elevator system |
| CN103848308B (en) * | 2012-11-29 | 2016-03-09 | 株式会社日立制作所 | Elevator device |
| CN105790739A (en) * | 2015-01-12 | 2016-07-20 | 英飞凌科技股份有限公司 | Protected Switching Element |
| CN105790739B (en) * | 2015-01-12 | 2022-03-08 | 英飞凌科技股份有限公司 | Protected switch element |
| CN107697761A (en) * | 2016-08-08 | 2018-02-16 | 株式会社日立制作所 | Elevator device |
| CN109720951A (en) * | 2017-10-30 | 2019-05-07 | 上海三菱电梯有限公司 | Elevator landing apptss |
| CN110526057A (en) * | 2019-08-20 | 2019-12-03 | 日立电梯（中国）有限公司 | Elevator car position confirms system, method and device |
| CN110867952A (en) * | 2019-12-04 | 2020-03-06 | 广东寰宇电子科技股份有限公司 | Elevator power control system and elevator system |
| CN111983432A (en) * | 2020-09-01 | 2020-11-24 | 无锡卓海科技有限公司 | Simulation test system for wafer position detection device |
| CN111983432B (en) * | 2020-09-01 | 2021-04-20 | 无锡卓海科技有限公司 | Simulation test system for wafer position detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1047764C (en) | 1999-12-29 |
| SG64287A1 (en) | 1999-04-27 |
| MY126287A (en) | 2006-09-29 |
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Owner name: LG-OTIS ELEVATOR CO., LTD. Free format text: FORMER OWNER: LG ELECTROGENESIS CO., LTD. Effective date: 20010717 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20010717 Patentee after: LG Otis Elevator Co., Ltd. Patentee before: LG Industrial Systems Co., Ltd. |
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