CN101531305A - Forced deceleration control system for elevator - Google Patents
Forced deceleration control system for elevator Download PDFInfo
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- CN101531305A CN101531305A CN200810176338A CN200810176338A CN101531305A CN 101531305 A CN101531305 A CN 101531305A CN 200810176338 A CN200810176338 A CN 200810176338A CN 200810176338 A CN200810176338 A CN 200810176338A CN 101531305 A CN101531305 A CN 101531305A
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Abstract
A forced deceleration control system for an elevator is capable of ensuring a higher control precision and improving the safety and reliability of an elevator system no matter where a car of the elevator running. A car speed calculation unit (6) calculates the speed of the car (3) based on the physical data input by a physical data detection unit (11), and outputs the speed to a overspeed discrimination unit (8). The overspeed discrimination unit (8) compares the speed calculation value from the car speed calculation unit (6) with a threshold value from a threshold value output unit (7), if the speed calculation value is over the threshold value, a judge result that the car is in a overspeed status is output to a forced deceleration control unit (9). The forced deceleration control unit (9) implements a forced deceleration control to a tractor (1) instantly after receiving the judge result.
Description
Technical field
The present invention relates to the forced deceleration control system of elevator.
Background technology
The zone (being called " terminal floor is slowed down regional " in this manual) that enters near terminal floor at the car in terminal floor is travelled when also not having fully to slow down, collides lift path top or bottom for fear of car, carries out forced deceleration control.
For example, in the related system of patent documentation 1, a kind of like this technology is disclosed: be used to detect a plurality of limit switches that car passes through regional the setting in advance of terminal floor deceleration, if each limit switch detects the car speed in the moment that car passes through than threshold value height, then force car is carried out deceleration control.
Patent documentation 1: the spy opens the 2003-95555 communique
But the speed of the operating car of elevator detects uses the impulse deviser, the magslip constant velocity detector that are installed on the towing machine to carry out usually.
But, often because of the fault of speed detector etc. produces (comprising the faults such as error expansion that cause by long-time deterioration) car the speed hypervelocity unusually.When producing the velocity anomaly that is caused by the fault of such speed detector etc. near terminal floor, slowing down the zone in terminal floor can be based on the unusual and forced deceleration of the reliable in function ground detection speed of described limit switch.In addition, when in intermediate floor travels, producing such velocity anomaly, can car promptly be stopped by governor.
But, in the related system of patent documentation 1, only at the travel direction of car for just carrying out forced deceleration control during towards the direction of terminal floor, for not carrying out forced deceleration control during towards the direction of intermediate floor from terminal floor in terminal floor from middle floor.
In addition, when in intermediate floor travels, producing velocity anomaly, carry out as mentioned above promptly stopping control, but should promptly stop to control and utilize centnifugal force to carry out, so can not expect terminal floor forced deceleration control high control accuracy like that by what governor carried out by what governor carried out.
For safety and the credibility that improves system, preferably, all guarantee to control equal control accuracy with the forced deceleration at described terminal floor place no matter be when terminal floor is towards intermediate floor travels or at intermediate floor, to travel when middle at car.
Summary of the invention
The present invention In view of the foregoing carries out, no matter its purpose is to provide a kind of car in which zone to travel when middle, can both guarantees high control precision always, can improve the safety of elevator device and the forced deceleration control system of credible elevator.
The present invention is characterized in that as the technical scheme that is used to solve above-mentioned problem, comprising: towing machine, and it drives car; The car speed detector, it is installed on the towing machine, detects the speed of car; The physical data on the basis when the car speed computing physical data detecting unit except that the speed detector that is installed at least on the towing machine, its detection can be as the speed of computing car; The car speed arithmetic element, it is based on the speed of car speed computing with the detected physical data computing of physical data detecting unit car; The threshold value output unit, it exports pre-set threshold; The hypervelocity judgement unit, it is differentiated car and whether is in overspeed condition based on from the car speed operation values of car speed arithmetic element and comparison from the threshold value of threshold value output unit; With the forced deceleration control unit, it is differentiated when being in overspeed condition at the hypervelocity judgement unit, and pressure is carried out deceleration control to towing machine.
According to the present invention, no matter car in which zone travels when middle, can both guarantee high control precision always, can improve the safety and the credibility of elevator device.
Description of drawings
Fig. 1 is the constructional drawing of the forced deceleration control system of the related elevator of the 1st embodiment of the present invention.
Fig. 2 is the constructional drawing of the forced deceleration control system of the related elevator of the 2nd embodiment of the present invention.
Fig. 3 is the constructional drawing of the forced deceleration control system of the related elevator of the 3rd embodiment of the present invention.
Fig. 4 is the constructional drawing of the forced deceleration control system of the related elevator of the 4th embodiment of the present invention.
Fig. 5 is the constructional drawing of the forced deceleration control system of the related elevator of the 5th embodiment of the present invention.
Fig. 6 is the constructional drawing of the forced deceleration control system of the related elevator of the 6th embodiment of the present invention.
Fig. 7 is the constructional drawing of the forced deceleration control system of the related elevator of the 7th embodiment of the present invention.
Fig. 8 is the constructional drawing of the forced deceleration control system of the related elevator of the 8th embodiment of the present invention.
Nomenclature
1: towing machine
2: hoist ropes
3: car
4: balance weight
5,5A～5D: elevator control gear
6: the car speed arithmetic element
6a: car acceleration/accel operational part
6b: frequency calculation portion
7: the threshold value output unit
8: the hypervelocity judgement unit
9: the forced deceleration control unit
10: running region and travel direction determining unit
11: car speed computing physical data detecting unit
11A: car acceleration detecting unit
11B: car load-carrying detecting unit
11C: towing machine current detecting unit
11D: car speed detecting unit
12: velocity limiter (governor)
13: governor rope
14: governor sheave
15: check-out console
D1～D3: the 1st to the 3rd operation values
S1: speed detected value
SW1～SWn: car detector switch
The specific embodiment
Fig. 1 is the constructional drawing of the forced deceleration control system of the related elevator of the 1st embodiment of the present invention.The 1st embodiment is a basic embodiment of the present invention.
Be provided with towing machine 1 on the top of lift path, on this towing machine 1, be wound with hoist ropes 2.Hoist ropes 2 one distolateral and another distolaterally be separately installed with car 3 and balance weight 4, these cars 3 and balance weight 4 are by the driving of towing machine 1, oppositely dipping and heaving mutually in lift path.
The structure of the elevator control gear 5 among Fig. 1 is only expressed and the relevant structural element of forced deceleration control, common operating speed control is undertaken by operation control unit (not shown) with from the identical mode of setting value of the detected value that is installed in the car speed detector (not shown) on the towing machine 1 with the speed control figure that provides in advance.
And in the present embodiment, the car speed detector detecting unit in addition that is installed at least on the described towing machine 1 is used in the car speed computing with physical data detecting unit 11.This car speed computing can be as the basis of the speed computing of car 3 with physical data detecting unit 11 detected physical datas.
Next, the action to Fig. 1 describes.For example, be made as present car 3 at the follow floor towards travelling in the zone of purpose floor.The car speed computing detects with physical data detecting unit 11 can be as the predetermined physical data on the basis of the speed computing of car 3, with these data to 6 outputs of car speed arithmetic element.Car speed arithmetic element 6 is exported it based on the speed of the physical data computing car 3 of this input to hypervelocity judgement unit 8.In addition, have predefined fixing threshold value from 7 inputs of threshold value output unit this moment in hypervelocity judgement unit 8.
8 pairs of speed operation values from 6 inputs of car speed arithmetic element of hypervelocity judgement unit compare with the threshold value of importing from threshold value output unit 7, if the speed operation values surpasses threshold value, then be in this differentiation of overspeed condition result to forced deceleration control unit 9 output cars 3.Then, forced deceleration control unit 9 is receiving this differentiation as a result the time, immediately towing machine 1 is carried out forced deceleration control.
The forced deceleration that is undertaken by described forced deceleration control unit 9 to towing machine 1 be controlled at car 3 be in terminal floor travel in or all carry out under any situation of intermediate floor in travelling.And then, travel when middle in terminal floor, not only be in when middle floor is to terminal floor is travelled at car 3, when terminal floor is to intermediate floor travels, also carry out forced deceleration control.And the car speed detector that is installed on the towing machine 1 is not used in the differentiation of hypervelocity of this moment, and carries out based on the detection of predetermined physical data.Therefore,,, high control precision can both be guaranteed always, the safety and the credibility of elevator device can be improved no matter car 3 is in travelling in any zone according to the structure of Fig. 1.
In addition, the control of forced deceleration among the present invention is envisioned for by the torque control by means of the towing machine 1 of DC-to-AC converter (not shown) to be undertaken, but also can be undertaken, perhaps and then also can use torque control and mechanical braking to carry out by merging by mechanical braking.
Fig. 2 is the constructional drawing of the forced deceleration control system of the related elevator of the 2nd embodiment of the present invention.The difference of Fig. 2 and Fig. 1 is: elevator control gear 5A has running region and travel direction determining unit 10, and this running region and travel direction determining unit 10 are determined running region and travel direction based on the car speed computing with physical data detecting unit 11 detected physical datas.
As in narration in the 1st embodiment like that, car speed computing usefulness physical data detecting unit 11 detected physical datas can be as the basis of the speed computing of car 3.And, if can try to achieve the speed of car 3, then can try to achieve car position by for example this speed being carried out integration, can try to achieve acceleration/accel by this speed is carried out differential in addition.Therefore, can determine running region and travel direction from the information relevant with these car positions and acceleration change.
Here, the determining of so-called described running region, be basically determine to belong to terminal floor slow down the zone or should the zone beyond the intermediate floor running region in which, but also can distinguish in further detail.Determining of so-called travel direction is to determine to belong in ascent direction or the descent direction which.
Threshold value output unit 7 maintains the data of being divided into a plurality of other threshold values of level in advance in internal storage, select with from running region and 10 inputs of travel direction determining unit with running region and the relevant corresponding threshold value of information of travel direction, export to hypervelocity judgement unit 8.
For example, running region be terminal floor slow down the zone or very near the zone in this zone, travel direction for from middle floor during towards the direction of terminal floor, threshold value output unit 7 other threshold values of output lowermost level.On the other hand, running region be terminal floor slow down the zone or very near the zone in this zone but travel direction for from terminal floor during towards the direction of intermediate floor, the threshold value output unit 7 outputs threshold value higher slightly than minimum rank.In addition, irrelevant with travel direction when running region is the intermediate floor running region, all export higher threshold value.
Next, the action to Fig. 2 describes.For example, be made as present car 3 at the follow floor towards travelling in the zone of purpose floor.The car speed computing detects with physical data detecting unit 11 can be as the predetermined physical data on the basis of the speed computing of car 3, with these data to 6 outputs of car speed arithmetic element.Car speed arithmetic element 6 is exported it based on the speed of the physical data computing car 3 of this input to hypervelocity judgement unit 8.
On the other hand, in running region and travel direction determining unit 10, also import from the physical data of car speed computing with physical data detecting unit 11.Then,, determine running region and travel direction, should determine that the result was to 7 outputs of threshold value output unit based on this arithmetic speed from the physical data computing car speed of this input.
Threshold value output unit 7 maintains the suitable threshold data with tabulated form each combination to running region and travel direction in internal storage, extraction and running region and travel direction determining unit 10 are determined from the form of this internal storage running region and the corresponding threshold value of travel direction are to 8 outputs of hypervelocity judgement unit.
Same with the 1st embodiment later on, 8 pairs of speed operation values from 6 inputs of car speed arithmetic element of hypervelocity judgement unit compare with the threshold value of importing from threshold value output unit 7, if the speed operation values surpasses threshold value, then be in this differentiation of overspeed condition result to forced deceleration control unit 9 output cars 3.Then, forced deceleration control unit 9 is receiving this differentiation as a result the time, immediately towing machine 1 is carried out forced deceleration control.
According to the 2nd embodiment, threshold value output unit 7 is exported suitable threshold according to the running region and the travel direction of car 3 to hypervelocity judgement unit 8, hypervelocity judgement unit 8 uses this threshold value to carry out the differentiation relevant with hypervelocity, so can guarantee higher control accuracy, can further improve the safety and the credibility of elevator device.
In addition, in the structure of Fig. 2, be made as running region and travel direction determining unit 10 based on determining the structure of running region and travel direction with the physical data of physical data detecting unit 11 from the car speed computing, but also can be made as predetermined location in the lift path side a plurality of sensors such as limit switch are set, by car 3 by the moment of these sensors and the structure of determining running region and travel direction by sequential scheduling.
Fig. 3 is the constructional drawing of the forced deceleration control system of the related elevator of the 3rd embodiment of the present invention.Present embodiment is made as such structure: with physical data detecting unit 11, use the car acceleration detecting unit 11A that is arranged on the car 3 as the car speed computing among Fig. 1.
Thereby, car speed arithmetic element 6 is from this car acceleration detecting unit 11A input during as the acceleration detection signal of physical data, by the acceleration detection value is carried out for example integral operation and the computing car speed, this operation values is exported to hypervelocity judgement unit 8.The structure of other structure and action and Fig. 1 is roughly same, so omission will be described.
In addition, though the diagram of omission, but set up running region shown in Figure 2 and travel direction determining unit 10, to 10 inputs of this running region and travel direction determining unit during from the acceleration detection signal of car acceleration detecting unit 11A, same with the structure of Fig. 2, high control precision can be guaranteed, the safety and the credibility of elevator device can be further improved.
Fig. 4 is the constructional drawing of the forced deceleration control system of the related elevator of the 4th embodiment of the present invention.Present embodiment is made as such structure: with physical data detecting unit 11, use the car load-carrying detecting unit 11B that is arranged on the car 3, and car speed arithmetic element 6 has car acceleration/accel operational part 6a as the car speed computing among Fig. 1.
Thereby car speed arithmetic element 6 is from car load-carrying detecting unit 11B input during as the car load-carrying detection signal of physical data, and car acceleration/accel operational part 6a is from load-carrying detected value computing car acceleration/accel, and then from this car acceleration/accel computing car speed.Then, the operation values of this car speed is exported to hypervelocity judgement unit 8.The structure of other structure and action and Fig. 1 is roughly same, so omission will be described.
In addition, though the diagram of omission, but set up running region shown in Figure 2 and travel direction determining unit 10, to 10 inputs of this running region and travel direction determining unit during from the car load-carrying detection signal of car load-carrying detecting unit 11B, same with the structure of Fig. 2, high control precision can be guaranteed, the safety and the credibility of elevator device can be further improved.
Fig. 5 is the constructional drawing of the forced deceleration control system of the related elevator of the 5th embodiment of the present invention.Present embodiment is made as such structure: as the physical data detecting unit 11 of the car speed computing among Fig. 1, use the towing machine current detecting unit 11C of the electric current that detects towing machine 1, and car speed arithmetic element 6 has the 6b of frequency calculation portion.Towing machine current detecting unit 11C for example is set at and provides on the path of electric power to towing machine 1 from inverter (not shown).
Thereby car speed arithmetic element 6 is from towing machine current detecting unit 11C input during as the towing machine electric current of physical data, and the 6b of frequency calculation portion is from current detection value operation current frequency, and then from this power frequency computing car speed.Then, the operation values of this car speed is exported to hypervelocity judgement unit 8.The structure of other structure and action and Fig. 1 is roughly same, so omission will be described.
In addition, though the diagram of omission, but set up running region shown in Figure 2 and travel direction determining unit 10, to 10 inputs of this running region and travel direction determining unit during from the current detection signal of towing machine current detecting unit 11C, same with the structure of Fig. 2, high control precision can be guaranteed, the safety and the credibility of elevator device can be further improved.
Fig. 6 is the constructional drawing of the forced deceleration control system of the related elevator of the 6th embodiment of the present invention.Present embodiment is made as such structure: as the physical data detecting unit 11 of the car speed computing among Fig. 1, use car acceleration detecting unit 11A, car load-carrying detecting unit 11B and towing machine current detecting unit 11C in the 3rd to the 5th embodiment, and the car speed arithmetic element 6 in the car load-carrying detecting unit 11B have car acceleration/accel operational part 6a and the 6b of frequency calculation portion.
Thereby car speed arithmetic element 6 is in input during from each detected value of above-mentioned 3 detecting unit 11A, 11B, 11C, will be based on the operation result of the input of each detected value as the 1st to the 3rd operation values D1～D3 to 8 outputs of hypervelocity judgement unit.
When hypervelocity judgement unit 8 any one in these the 1st to the 3rd operation values D1～D3 surpassed threshold value, just differentiation was in overspeed condition for car 3.The structure of other structure and action and Fig. 1 is roughly same, so omission will be described.
In addition, though the diagram of omission, but set up running region shown in Figure 2 and travel direction determining unit 10, to 10 inputs of this running region and travel direction determining unit during from any one detection signal among detecting unit 11A, 11B, the 11C, same with the structure of Fig. 2, high control precision can be guaranteed, the safety and the credibility of elevator device can be further improved.
Fig. 7 is the constructional drawing of the forced deceleration control system of the related elevator of the 7th embodiment of the present invention.Present embodiment is made as such structure: in the structure of the 6th embodiment of Fig. 6, use car speed detecting unit 11D as the 4th car speed computing physical data detecting unit.
That is, though in Fig. 1 to Fig. 6 before this, omitted diagram, in fact with the towing machine 1 adjacent velocity limiter (governor) 12 that is provided with.Be wound on a distolateral top that is installed in car 3 of the governor rope 13 on this velocity limiter 12, another distolateral bottom that is installed in car 3 via governor sheave 14.And car speed detecting unit 11D is installed on this velocity limiter 12.
Thereby, car speed arithmetic element 6 in the elevator control gear 5C is in input during from each detected value of above-mentioned detecting unit 11A, 11B, 11C, will be based on the operation result of the input of each detected value as the 1st to the 3rd operation values D1～D3 to 8 outputs of hypervelocity judgement unit.In addition, hypervelocity judgement unit 8 is directly imported the speed detection signal S1 from car speed detecting unit 11D.
When hypervelocity judgement unit 8 any one in these the 1st to the 3rd operation values D1～D3 and speed detection signal S1 surpassed threshold value, just differentiation was in overspeed condition for car 3.The structure of other structure and action and Fig. 1 is roughly same, so omission will be described.
In addition, though the diagram of omission, but set up running region shown in Figure 2 and travel direction determining unit 10, to 10 inputs of this running region and travel direction determining unit during from any one detection signal among detecting unit 11A, 11B, 11C, the 11D, same with the structure of Fig. 2, high control precision can be guaranteed, the safety and the credibility of elevator device can be further improved.
Fig. 8 is the constructional drawing of the forced deceleration control system of the related elevator of the 8th embodiment of the present invention.This embodiment is in the structure of the 1st embodiment of Fig. 1, set a plurality of car detector switch SW1～SWn in terminal floor deceleration zone, and set in advance the check-out console 15 that contacts in proper order with these car detector switches SW1～SWn in car 3 sides, will be from threshold value output unit 7 outputs of car detection signal in elevator control gear 5D of car detector switch SW1～SWn.
Thereby, slowing down the regional moment (being the moment of car detector switch SW1 output detection signal) at the car 3 incoming terminal floors that move from middle floor running region, threshold value output unit 7 will reduce intended level to the threshold value of hypervelocity judgement unit 8 outputs.At this moment, also can after each of detector switch SW2～SWn order output detection signal reduce constantly and then with threshold value.
The threshold value of threshold value output unit 7 outputs in the embodiment of Fig. 1 is a fixed value, but according to present embodiment, can differentiate with other the forced deceleration control in zone and handle the higher terminal floor of urgency and slow down the zone (here, be that car 3 is from the situation of middle floor towards terminal floor) forced deceleration control, can increase the safety and the credibility of elevator device.
Next, accompanying drawing is omitted, and the 9th embodiment of the present invention is described.Present embodiment is as described below: the hypervelocity judgement unit 8 among Fig. 1 has overtime instrumentation function, surpass from the operation values of car speed arithmetic element 6 from the threshold value of threshold value output unit 7 the state continuance schedule time, Δ t was above the time, differentiate for car 3 and be in overspeed condition.
Like this, have overtime instrumentation function, thereby can get rid of only because the instantaneous situation that surpasses threshold value such as the influence car speed operation values of noise etc. is carried out the differentiation of overspeed condition by making hypervelocity judgement unit 8.
Here, the forced deceleration control in the higher terminal floor deceleration zone (here, being that car 3 is from the situation of middle floor towards terminal floor) of urgency, above-mentioned time Δ t need be made as the short as far as possible time.Perhaps, in the forced deceleration control that such terminal floor is slowed down regional, also can the overtime instrumentation function of hypervelocity judgement unit 8 be retrained (at this moment, as long as the running region and the travel direction determining unit 10 of appended drawings 2, hypervelocity judgement unit 8 can be recognized be in the higher terminal floor of the urgency zone of slowing down).
Claims (9)
1. the forced deceleration control system of an elevator is characterized in that, comprising:
Towing machine, it drives car;
The car speed detector, it is installed on the described towing machine, detects the speed of described car;
The physical data on the basis when the car speed computing physical data detecting unit except that the speed detector that is installed at least on the towing machine, its detection can be as the speed of the described car of computing;
The car speed arithmetic element, it is based on the described car speed computing detected physical data of physical data detecting unit, the speed of computing car;
The threshold value output unit, it exports pre-set threshold;
The hypervelocity judgement unit, it is differentiated car and whether is in overspeed condition based on from the car speed operation values of described car speed arithmetic element and comparison from the threshold value of described threshold value output unit; With
The forced deceleration control unit, it is differentiated when being in overspeed condition at described hypervelocity judgement unit, and pressure is carried out deceleration control to towing machine.
2. the forced deceleration control system of elevator as claimed in claim 1 is characterized in that:
Comprise running region and travel direction determining unit, it determines the running region and the travel direction of car based on from the input of described car speed computing with the physical data of physical data detecting unit;
Described threshold value output unit is exported described pre-set threshold according to the running region and the travel direction of the car that described running region and travel direction determining unit are determined.
3. the forced deceleration control system of elevator as claimed in claim 1 is characterized in that:
Described car speed computing is to be arranged on the described car, to detect the car acceleration detecting unit of the acceleration/accel of car as described physical data with the physical data detecting unit;
Described car speed arithmetic element is from the speed from the described car of acceleration detection value computing of described car acceleration detecting unit.
4. the forced deceleration control system of elevator as claimed in claim 1 is characterized in that:
Described car speed computing is to be arranged on the described car, to detect the car load-carrying detecting unit of the load-carrying of car as described physical data with the physical data detecting unit;
Described car speed arithmetic element is from the load-carrying detected value computing car acceleration/accel from described car load-carrying detecting unit, from the speed of this described car of car acceleration/accel computing that calculates.
5. the forced deceleration control system of elevator as claimed in claim 1 is characterized in that:
Described car speed computing is to detect the towing machine current detecting unit of the electric current of described towing machine as described physical data with the physical data detecting unit;
Described car speed arithmetic element is from the current detection value operation current frequency from described towing machine current detecting unit, from the speed of this described car of power frequency computing that calculates.
6. the forced deceleration control system of elevator as claimed in claim 1 is characterized in that:
Described car speed computing comprises with the structure of physical data detecting unit, be arranged on the described car, detect the car acceleration detecting unit of the acceleration/accel of car as described physical data, the load-carrying that is arranged on the described car, detects car is as the car load-carrying detecting unit of described physical data and detect the towing machine current detecting unit of the electric current of described towing machine as described physical data;
Described car speed arithmetic element, from from the speed of the described car of acceleration detection value computing of described car acceleration detecting unit as the 1st operation values, from load-carrying detected value computing car acceleration/accel from described car load-carrying detecting unit, from the speed of this described car of car acceleration/accel computing that calculates as the 2nd operation values, from current detection value operation current frequency from described towing machine current detecting unit, from the speed of this described car of power frequency computing that calculates as the 3rd operation values;
When described hypervelocity judgement unit any one in described the 1st to the 3rd operation values that is calculated by described car speed arithmetic element surpasses described threshold value, differentiate for described car and be in overspeed condition.
7. the forced deceleration control system of elevator as claimed in claim 6 is characterized in that:
Comprise the car speed detecting unit, it is installed on the governor that is adjacent to be provided with described towing machine, detects the speed of described car;
Described hypervelocity judgement unit in described the 1st to the 3rd operation values that calculates by described car speed arithmetic element any one or when surpassing described threshold value from the speed detected value of described car speed detecting unit, differentiate for described car and be in overspeed condition.
8. the forced deceleration control system of elevator as claimed in claim 1 is characterized in that:
Comprise the car detector switch, it is provided in the terminal floor deceleration zone of lift path, and the described car of output expression arrives the car detection signal in the desired location in this terminal floor deceleration zone from middle floor running region;
Described threshold value output unit makes described threshold value decline intended level, with its output after the car detection signal of input from described car detector switch.
9. the forced deceleration control system of elevator as claimed in claim 1 is characterized in that:
Described hypervelocity judgement unit surpasses state continuance schedule time of described threshold value when above in described car speed operation values, differentiates for described car to be in overspeed condition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008063544A JP2009215057A (en) | 2008-03-13 | 2008-03-13 | Compulsory deceleration control system of elevator |
| JP063544/2008 | 2008-03-13 |
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| Publication Number | Publication Date |
|---|---|
| CN101531305A true CN101531305A (en) | 2009-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810176338A Pending CN101531305A (en) | 2008-03-13 | 2008-11-20 | Forced deceleration control system for elevator |
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| JP (1) | JP2009215057A (en) |
| CN (1) | CN101531305A (en) |
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2008
- 2008-03-13 JP JP2008063544A patent/JP2009215057A/en active Pending
- 2008-11-20 CN CN200810176338A patent/CN101531305A/en active Pending
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