CN102234057A - Control device for escalator and automatic sidewalk - Google Patents
Control device for escalator and automatic sidewalk Download PDFInfo
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- CN102234057A CN102234057A CN2010101692425A CN201010169242A CN102234057A CN 102234057 A CN102234057 A CN 102234057A CN 2010101692425 A CN2010101692425 A CN 2010101692425A CN 201010169242 A CN201010169242 A CN 201010169242A CN 102234057 A CN102234057 A CN 102234057A
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- staircase
- escalator
- pedestrian
- voltage
- speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Abstract
The invention discloses a control device for an escalator and an automatic sidewalk, comprising a rectifier device assembly, an inverter device assembly, a motor, a microprocessor operating system, a current transformer and a pedestrian detection device at escalator top and bottom entry. The current transformer and the pedestrian detection device are used for estimating an escalator load factor, automatically changing operation speed of the escalator and the automatic sidewalk according to difference of the escalator load factors, and increasing the escalator speed to exceed a rated speed in heavy load. The no-load energy saving function of the escalator and the automatic sidewalk can be achieved, the pedestrian conveying capability when the escalator is under a heavy load can be increased, and the energy can be saved furthest in a light load.
Description
Technical field
The present invention relates to escalator and Travelator system control field, particularly relate to a kind of control setup that is used for escalator and Travelator system.
Background technology
Be commonly considered as moving in the constant speed mode as the escalator of pedestrian's delivery system and moving sidewalk, the simplest electrical network direct supply dragging system is adopted in its Electric Traction traditionally.Yet most of escalators have the advantages that regular gap is used, such as one class in subway 4 minutes, about 1 minute of the time that the stream of people of departures continues on escalator, the departures stream of people is blocked up in the staircase entrance during this period of time, can not in time be evacuated, and 3 fens other clock times are in zero load or light running state.For the application scenario that resembles commercial style escalators such as office buildings, remove section in peak time on and off duty, all be in zero load or light running state At All Other Times basically.The inbound stream of people of occasions such as and for example common market and subway, airport is interrupted, and the load factor of this occasion staircase is all little, and this moment, the frictional loss of staircase was much higher than effective power consumption of transporting the pedestrian, and the staircase whole efficiency is very low.Need maximum traffic flow in rush-hour like this, and the energy dissipation of the escalator that uses under gap phase underloading or idle condition is appreciable, how to handle this well to contradiction, pedestrian's traffic capacity when improving the peak, and reduce loss under underloading and the idle condition, be to have cooresponding realistic meaning.
Chinese invention patent application authorization specification sheets CN1010852B (the authorization day for announcing: December 19 nineteen ninety) and Chinese invention patent specification sheets CN1099370C (Granted publication day: on January 22nd, 2003) provide a kind of when staircase has the pedestrian by three-phase alternating current electrical network direct supply, staircase moves with command speed; By inverter supply, staircase is with utmost point low cruise or stop method with energy savings when no pedestrian.Yet this kind method has only solved the power saving when not having pedestrian's (zero load) on the staircase, and when for staircase the pedestrian being arranged, the situation that the whole efficiency when particularly staircase is in underloading is low does not have any improvement.
Energy-conservation common way during for the staircase underloading is to reduce the voltage of electrical motor, and the heating of electrical motor is reduced to improve its efficient.For reaching this purpose, in the time of can adopting Y/ Δ changing method and staircase that the pedestrian is arranged also by the method for inverter supply.
Y/ Δ changing method promptly when staircase is in underloading electrical motor adopt wye connection, and electrical motor switches to Δ type connection when heavy duty, reduces the electric current of electrical motor when the underloading with this.Yet frequent switching not only can be shortened the life-span of product, also can bring bigger impact to electrical network.Also by inverter supply,, when the staircase underloading, suitably reduce motor voltage and reach energy-conservation purpose when staircase has the pedestrian because frequency converter output voltage is adjustable.Yet the energy-saving effect of the method for this pure reduction motor voltage remains limited, and the method has only reduced the heating of electrical motor, but to the frictional loss of staircase without any reduction.Therefore all above control methods do not solve the problem of escalator and moving sidewalk light-load energy saving well.
Chinese invention patent Shen Qing Publication specification sheets CN1994847A (open day: on July 11st, 2007) disclose a kind of escalator system that staircase speed is switched by the detection load, can set between some load region, between different load region, adopt corresponding driving speed.Though this method can solve the problem of light-load energy saving preferably, yet for flow of the people when big, it can not be to surpass conventional staircase speed operation, all do not resolve the problem how traffic capacity of staircase peak period improves at present in the staircase of usefulness.
Summary of the invention
The technical problem to be solved in the present invention provides the control setup of a kind of escalator and Travelator system, make escalator and moving sidewalk when heavy duty, improve pedestrian's traffic capacity, and can be energy-conservation to greatest extent under the underloading condition, reach the balance between energy-conservation and the traffic capacity.
For solving the problems of the technologies described above, the control setup of escalator of the present invention and Travelator system comprises:
The three phase rectifier device assembly is realized the conversion of AC-DC;
The inverter assembly is connected with described three phase rectifier assembly, realizes the DC-AC conversion, for electrical motor provides driving power voltage;
Electrical motor is connected with the inverter assembly with the three phase rectifier device assembly, is used to drag staircase;
The microprocessor arithmetic system is connected with the inverter assembly with the three phase rectifier device assembly, is used for the control and the driving of escalator;
Two-way current transformer, the U that measures described electrical motor respectively mutually with V phase current mutually, and input to the microprocessor arithmetic system;
Be arranged on the pedestrian detection device of entrance, staircase top and the bottom, link to each other, be used for detection and have or not the pedestrian with the microprocessor arithmetic system;
Described microprocessor arithmetic system estimates the load factor of staircase according to the information of current transformer or pedestrian detection device input, and staircase is set between a plurality of load region, adopts different actuating speeds between different load region; Wherein:
When the staircase load factor when threshold value is set, by the speed Vmax operation of three phase rectifier device assembly and inverter assembly control motor, to improve staircase pedestrian traffic capacity with the corresponding staircase speed Vr that is higher than its rated frequency running.
Because the electric voltage frequency that three phase rectifier device assembly and inverter assembly export on the electrical motor all is variable, change the power frequency of electrical motor, can carry out the speed adjustment to escalator and moving sidewalk, when staircase is in underloading, reduce the voltage of electrical motor, can make power of electric motor factor, efficient reach optimum.
By the staircase pedestrian Weight detector that pedestrian detection device and current transformer are formed, not only can detect and have or not the pedestrian, also can detect what of pedestrian.The present invention defines the command speed that staircase speed does not adopt conventional staircase, cooresponding staircase speed when promptly electrical motor turns round with rated frequency (for example commercial frequency 50Hz).Because the rotating speed of electrical motor is controlled by three phase rectifier device assembly and inverter assembly, staircase both can move by conventional command speed Vr among the present invention, also can be different from other speed operations of command speed Vr, promptly the staircase speed among the present invention is not limited to the command speed of conventional staircase.According to what of staircase load factor staircase is achieved as follows control:
1, when the staircase load factor is zero, keep staircase with utmost point low speed V by three phase rectifier device assembly and inverter assembly control motor
0The operation or stop standby with energy savings.
2, when staircase load factor hour (for example load factor＜50%), by three phase rectifier device assembly and inverter assembly control motor to be lower than the speed V of staircase command speed Vr
1Operation, the frictional loss during with reduction staircase underloading.
3, when the staircase load factor is big (for example load factor＞50%), move with the speed Vmax that is higher than staircase command speed Vr by three phase rectifier device assembly and inverter assembly control motor, to improve staircase pedestrian traffic capacity, evacuate the pedestrian as early as possible.
Above-mentioned three phase rectifier device assembly is a controllable rectifier module, dc voltage stably can be controlled on the prior setting value.Improving staircase pedestrian traffic capacity when load factor is big is not merely the output frequency of electrical motor to be brought up to more than the commercial frequency, but make the output voltage of inverter can be higher than the mains input voltage after by controllable rectifier module dc voltage being promoted simultaneously, thereby guarantee when the output frequency of electrical motor improves, the output torque of voltage/frequency staircase when the proof load rate is big than not reducing, thus realize bigger traffic traffic capacity.
Above-mentioned speed V
1With utmost point low cruise V
0Difference be V
0Speed very low, its function is that to be in the normal service be not purpose to carry the pedestrian to prompting pedestrian current staircase; V
1Speed higher, can reasonably in the time passenger be transported to the destination.V
1And V
0All, can realize energy-conservation purpose less than staircase command speed Vr.
Use control setup of the present invention, not only can realize the empty load energy-saving function of staircase and moving sidewalk, and can when the staircase heavy duty, improve pedestrian's traffic capacity, again can be energy-conservation to greatest extent during underloading.
Description of drawings
The present invention is further detailed explanation below in conjunction with accompanying drawing and the specific embodiment:
Fig. 1 is an example structure figure of escalator of the present invention and moving sidewalk control setup;
Fig. 2 is the typical rate run curve of escalator and moving sidewalk.
The specific embodiment
Referring to shown in Figure 1, described escalator and moving sidewalk control setup comprise:
Three phase rectifier device assembly 3 links to each other with the civil power three phase mains, realizes the conversion of AC-DC.
Inverter assembly 2 is connected with described three phase rectifier assembly 3, realizes the DC-AC conversion, for electrical motor provides driving power voltage.
Electrical motor 1 is connected with inverter assembly 2, is used to drag staircase 9.
Microprocessor arithmetic system 4 is connected with inverter assembly 2 with three phase rectifier device assembly 3, is used for the control and the driving of escalator 9.
Two-way current transformer 7,8, the U that measures described electrical motor 1 respectively mutually with V phase current mutually, and input to microprocessor arithmetic system 4, be used for the driving computing of electrical motor 1 and estimate the load factor of escalator 9;
Be arranged on the pedestrian detection device 5,6 of entrance, staircase top and the bottom, link to each other, be used to detect escalator 9 and have or not the pedestrian with microprocessor arithmetic system 4.
Because voltage, frequency that three phase rectifier device assembly 3 and inverter assembly 2 export on the electrical motor 1 all are variable, change the power frequency of electrical motor 1, can carry out speed setting to escalator and moving sidewalk 9, simultaneously can be by regulating the voltage of electrical motor 1, when escalator 9 is in underloading, reduce the voltage of electrical motor 1, can make power of electric motor factor, efficient reach optimum, improve the operating efficiency of electric system when zero load and underloading.
Obviously, under same loading condition, the consumption of power of escalator and moving sidewalk 9 is proportional with its running velocity.And escalator and moving sidewalk 9 be as pedestrian's delivery system, and should there be enough traffic capacitys the rush-hour when load factor is higher, does not make crowd massing in the staircase entrance; Under the lower underloading condition of load factor, its main purpose is to carry the pedestrian to the destination, should be with due regard to energy-conservation; Be that not had the pedestrian this moment needs to carry, and should use up energy-conservation to greatest extent under zero the unmanned condition in load factor.Therefore be under the different loads rate condition for staircase, its running velocity can have different processing modes, discusses respectively below.
Unloaded nobody the time: can detect having or not of pedestrian by entrance, staircase top and the bottom pedestrian detection device 5,6, when pedestrian detection device 5,6 does not within a certain period of time detect the pedestrian, and time-delay a period of time guarantee last pedestrian be transferred finish after, microprocessor arithmetic system 4 control three phase rectifier device assembly 3 and inverter assemblies 2, make staircase 9 to the utmost point low treat motor speed V
0Operation or directly stop staircase 9 realizes the empty load energy-saving of staircase 9.
When staircase load factor hour (for example load factor＜50%), this moment, the pedestrian can not assembled in the staircase entrance, and the main purpose of staircase is to carry the pedestrian to the destination, can suitably reduce the staircase running velocity, realization staircase energy-conservation.Control escalator to be lower than the speed V of staircase speed Vr by three phase rectifier device assembly and inverter assembly
1Operation, the frictional loss during with reduction staircase underloading.Speed V
1Setting can reasonably in the time passenger being transported to the destination, reaching the pedestrian, to carry purpose be principle.
When the staircase load factor is big (for example load factor＞50%), can assemble more crowd in the staircase entrance this moment, the main purpose of escalator and moving sidewalk changes into evacuates the crowd as early as possible to alleviate the pressure of the magnitude of traffic flow, can suitably improve the staircase running velocity to reach this purpose.To be higher than the speed Vmax operation of staircase command speed Vr,, evacuate the pedestrian as early as possible by inverter assembly 2 control escalators to improve staircase pedestrian traffic capacity.
This speed switching is not need carrying out automatically of manual intervention, automatically discern the load state of staircase by microprocessor arithmetic system 4, the load factor that is staircase detects and can realize by the stored count of pedestrian detection device 5,6, also can estimate by the current feedback of current transformer 7,8.When the load factor that detects staircase during less than predefined value, staircase is with V
1The speed operation; When the load factor of staircase during greater than predefined value, staircase moves with Vmax speed.Fig. 2 has shown the typical rate run curve of escalator and moving sidewalk.
When certain aforementioned load factor is big, can not be merely the output frequency of electrical motor be improved to improve staircase pedestrian traffic capacity.As pressing rated voltage/frequency condition (380V/50Hz) design-calculated electrical motor, if operate under the 380V/55Hz condition, though motor speed has improved, because voltage frequency ratio has reduced, the also corresponding reduction of its output torque, when this moment staircase be under the heavy condition, overfrequency is used and just to be meaned that the risk that can not drag heavy load like this is arranged.Want head it off, the electrical motor and the frequency converter of the more high-power grade of first configuration, but this obviously loses more than gain; It two is to improve the voltage that exports electrical motor to simultaneously, and the sustaining voltage frequency ratio is constant, for example by inverter assembly 2 output 418V/55Hz to electrical motor, can keep the moment fan-out capability of electrical motor constant, staircase speed improves 10% simultaneously.Yet common converter plant its output voltage after the AC-DC-AC conversion can not be higher than the mains input voltage; The controllable rectifier module that the present invention adopts by three phase rectifier device assembly 3, to make the output voltage of inverter assembly 2 can be higher than the mains input voltage after the dc voltage lifting, final realization does not improve under the condition of power of motor configuration, increases pedestrian's traffic capacity of staircase.For example common frequency converter is 537VDC by the extraneous three-phase 380VAC of diode rectification module rectification, and by controllable rectifier module with dc voltage stability be controlled at 700VDC, then the voltage fan-out capability of corresponding inverter assembly 2 has also improved 20%～30% than common frequency converter.The another one benefit that adopts controlled rectification be exactly the conversion of AC-DC be beidirectional, when escalator was up, energy not only can be converted to dc voltage from the AC three phase mains of civil power made electrical motor be in the motoring condition consumed energy; Also can be when escalator to be descending, electrical motor is in generating state dc voltage is converted to AC voltage feedback telegram in reply net, rather than adopts braking resistor to consume simply, realizes energy-conservation purpose more.
Escalator and moving sidewalk for a lot of occasions, when the magnitude of traffic flow is big, press for and improve staircase speed with the evacuation crowd, in order to avoid cause traffic congestion to cause contingency, and most time of run all is under the light running condition, shared proportion of heavy service time is very little, this mediation to contradiction of raising of pedestrian's traffic capacity was particularly important when therefore the light-load energy saving of staircase was with heavy duty, use energy-saving control device of the present invention, not only can realize the empty load energy-saving function of staircase and moving sidewalk, also can be energy-conservation to greatest extent when underloading, can improve pedestrian's traffic capacity when the staircase heavy duty simultaneously, be the optimized operation scheme of escalator and moving sidewalk.
More than by embodiment the present invention is had been described in detail, but these are not to be construed as limiting the invention.Those skilled in the art also can make some distortion and improvement (as the staircase load factor is subdivided into more grades, using the more running velocity of multiscale) under the situation that does not break away from the principle of the invention, and these also should be considered as belonging to protection scope of the present invention.
Claims (3)
1. escalator and moving sidewalk control setup comprise:
The three phase rectifier device assembly is realized the conversion of AC-DC;
The inverter assembly is connected with described three phase rectifier assembly, realizes the DC-AC conversion, for electrical motor provides driving power voltage;
Electrical motor is connected with the inverter assembly, is used to drag staircase;
The microprocessor arithmetic system is connected with the inverter assembly with the three phase rectifier device assembly, is used for the control and the driving of escalator;
Two-way current transformer, the U that measures described electrical motor respectively mutually with V phase current mutually, and input to the microprocessor arithmetic system;
Be arranged on the pedestrian detection device of entrance, staircase top and the bottom, link to each other, be used for detection and have or not the pedestrian with the microprocessor arithmetic system;
Described microprocessor arithmetic system estimates the load factor of staircase according to the information of current transformer or pedestrian detection device input, and staircase is set between a plurality of load region, adopts different actuating speeds between different load region; It is characterized in that:
When staircase load factor during, by the speed Vmax operation of three phase rectifier device assembly and inverter assembly control motor, to improve staircase pedestrian traffic capacity with the corresponding staircase speed Vr that is higher than its rated frequency running greater than preset threshold.
2. control setup as claimed in claim 1 is characterized in that: described three phase rectifier device assembly is a controllable rectifier module, and dc voltage stably is controlled on the desirable value.
3. control setup as claimed in claim 2, it is characterized in that: when load factor is big, the control motor is with the speed Vmax operation of the corresponding staircase speed Vr that is higher than the running of its rated frequency the time, make the output voltage of inverter assembly can be higher than the mains input voltage after by controllable rectifier module dc voltage being promoted, do not reduce than with the voltage/frequency that keeps frequency converter to export electrical motor to, promptly motor output torque does not reduce.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101692425A CN102234057A (en) | 2010-05-07 | 2010-05-07 | Control device for escalator and automatic sidewalk |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101692425A CN102234057A (en) | 2010-05-07 | 2010-05-07 | Control device for escalator and automatic sidewalk |
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| CN102234057A true CN102234057A (en) | 2011-11-09 |
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| CN2010101692425A Pending CN102234057A (en) | 2010-05-07 | 2010-05-07 | Control device for escalator and automatic sidewalk |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826437A (en) * | 2012-09-18 | 2012-12-19 | 广州市特种机电设备检测研究院 | Device for recording and monitoring running of staircase |
| CN104925632A (en) * | 2014-03-18 | 2015-09-23 | 东芝电梯株式会社 | Passenger conveyer |
| CN108483164A (en) * | 2018-04-27 | 2018-09-04 | 北海和思科技有限公司 | A kind of intelligence control system and its control method of escalator |
| CN109160411A (en) * | 2018-10-19 | 2019-01-08 | 广州绰立科技有限公司 | The detection control method and system of escalator |
| CN110422744A (en) * | 2019-08-15 | 2019-11-08 | 康力电梯股份有限公司 | A kind of display methods of staircase or moving sidewalk load curve |
| CN112478648A (en) * | 2020-12-09 | 2021-03-12 | 合肥神马科技集团有限公司 | Electric flat carriage is used for intelligent logistics system between cable enterprise production line process |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826437A (en) * | 2012-09-18 | 2012-12-19 | 广州市特种机电设备检测研究院 | Device for recording and monitoring running of staircase |
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| CN104925632A (en) * | 2014-03-18 | 2015-09-23 | 东芝电梯株式会社 | Passenger conveyer |
| CN108483164A (en) * | 2018-04-27 | 2018-09-04 | 北海和思科技有限公司 | A kind of intelligence control system and its control method of escalator |
| CN109160411A (en) * | 2018-10-19 | 2019-01-08 | 广州绰立科技有限公司 | The detection control method and system of escalator |
| CN110422744A (en) * | 2019-08-15 | 2019-11-08 | 康力电梯股份有限公司 | A kind of display methods of staircase or moving sidewalk load curve |
| CN110422744B (en) * | 2019-08-15 | 2020-08-25 | 康力电梯股份有限公司 | Method for displaying load curve of escalator or moving sidewalk |
| CN112478648A (en) * | 2020-12-09 | 2021-03-12 | 合肥神马科技集团有限公司 | Electric flat carriage is used for intelligent logistics system between cable enterprise production line process |
| CN112478648B (en) * | 2020-12-09 | 2021-12-10 | 合肥神马科技集团有限公司 | Electric flat carriage is used for intelligent logistics system between cable enterprise production line process |
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Application publication date: 20111109 |