CN104773642A - Escalator control device - Google Patents
Escalator control device Download PDFInfo
- Publication number
- CN104773642A CN104773642A CN201410017433.8A CN201410017433A CN104773642A CN 104773642 A CN104773642 A CN 104773642A CN 201410017433 A CN201410017433 A CN 201410017433A CN 104773642 A CN104773642 A CN 104773642A
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- China
- Prior art keywords
- motor
- staircase
- contactless switch
- frequency
- power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B25/00—Control of escalators or moving walkways
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
The invention discloses an escalator control device for controlling the operation of an escalator; when the escalator is located in high load higher than a preset load threshold, a frequency converter controls the communication between a first working frequency contactor (K24-1) and a second working frequency contactor (K24-2) and the disconnection between a first variable frequency contactor (K25-1) and a second variable frequency contactor (K25-2), so that a first motor (1) and a second motor (2) are both directly driven by a working frequency power supply; when the escalator is located in low load lower than the preset load threshold, the frequency converter controls the communication of the first variable frequency contactor (K25-1) and the disconnection of the first working frequency contactor (K24-1) to drive the first motor (1), and controls the communication of the second variable frequency contactor (K25-2) and the disconnection of the second working frequency contactor (K24-2); and a mechanism is used for enabling the second motor (2) to locate a free rotating state.
Description
Technical field
The present invention relates to staircase control setup.
Background technology
Staircase be widely used in people production and life in.Along with the development of society, staircase is endowed more and more higher requirement.Such as, some staircases will manufacture more and more longer, or, be set to hoisting depth more and more higher, or, be required that speed of response is more and more faster and be such as required shorter and shorter from the static time changing to command speed, or, be required that the weight carried is increasing.These situations all can cause the load of staircase (i.e. the load of motor needs driving) increasing.
In the prior art, in order to the requirement of satisfied output more heavy load, then need the motor arranging that horsepower output is larger, correspondingly, also need more high-performance frequency converter, this inevitably result in the rising of the cost of elevator.
Further, along with the development of society, people are more and more higher to energy-conservation requirement, but for high-performance motor, it is unsatisfactory in saving.
Therefore, there is a kind of demand, that is, need a kind of staircase control setup of optimization, it at least can solve the above-mentioned technical matters existed in prior art one or more, and particularly, it can realize the requirement that cost reduces and/or energy is saved.
Summary of the invention
First, it should be noted that, in whole description herein, term " staircase " includes but not limited to moving sidewalk, rotating ladder, staircase etc. for occasions such as market, supermarket, airports, they may be horizontally disposed (i.e. horizontal transmission passenger), (being sent to another height from a certain height by passenger) also likely for being obliquely installed.And when mentioning staircase load, refer to the load needing driven device (motor) to drive, comprise the weight of the physical construction of staircase itself, load that acceleration/accel causes, personnel on staircase the load sum that forms such as weight.
In the preferred embodiment of the present invention, a kind of staircase control setup of the operation for controlling staircase is provided, described staircase has the first motor and the second motor for driving staircase, described staircase control setup controls the operation of described staircase by the operation controlling described first motor and the second motor, wherein, described staircase control setup comprises frequency converter, first frequency conversion contactless switch, second frequency conversion contactless switch, first power frequency contactless switch and the second power frequency contactless switch, wherein, one end of described first frequency conversion contactless switch is connected to described frequency converter, the other end is connected to the first motor, one end of described second frequency conversion contactless switch is connected to described frequency converter, the other end is connected to the second motor, one end of described first power frequency contactless switch is used for being connected to power frequency supply, the other end is connected to the first motor, one end of described second power frequency contactless switch is used for being connected to power frequency supply, the other end is connected to the second motor, wherein, when under the high capacity that staircase is in higher than predetermined load threshold value, first power frequency contactless switch described in described Frequency Converter Control and described second power frequency contactless switch are connected and described first frequency conversion contactless switch and described second frequency conversion contactless switch disconnect, to make described first motor and described second motor by power frequency supply Direct driver, wherein, when under the low load that staircase is in lower than aforementioned predetermined load threshold value, first frequency conversion contactless switch described in described Frequency Converter Control is connected and the first power frequency contactless switch disconnects to make the first motor by transducer drive, and control second frequency conversion contactless switch connect and second power frequency contactless switch disconnect and make described second motor be in free rotary state by means of a mechanism, and wherein, when staircase stops or intending to be switched to halted state, first frequency conversion contactless switch described in described Frequency Converter Control, second frequency conversion contactless switch, first power frequency contactless switch and the second power frequency contactless switch disconnect, to make the first motor and the second motor power-off.
Thus, according to the abovementioned embodiments of the present invention, some or all of following Advantageous Effects can be realized:
The first, in the present invention, staircase control setup is applicable to two or at least two motors, that is, can drive staircase by two or at least two motors.With use compared with 1 high-performance motor in prior art, the present invention can use two relatively low power motors, and two low-power motors will have more advantage on cost, and due to the volume of low-power motor relatively little, therefore also more superior on flexible arrangement degree.
Second; in the present invention; second motor is put into based on load situation in operation; particularly, during by high capacity, when namely needing driven load higher; during second motor is just devoted oneself to work; otherwise it is in and freely dallies or stopped status, and this can reduce motor cal val, thus make whole staircase more energy-conservation.
3rd, in the present invention, achieve the motor how using 1 frequency converter to control 2 or more, such mode does not exist in the prior art, therefore, the present invention proposes a kind of brand-new staircase and controls thinking.
4th, in the present invention, each contactless switch is controlled by same frequency converter, namely, these control policies can be integrated in frequency converter, thus without the need to using extra control setup to control, user directly buying the frequency converter according to the present invention's design, eliminating and buy control setup separately and carry out bothering of line.
According to the abovementioned embodiments of the present invention, preferably, to comprise under the high capacity that aforesaid staircase is in higher than predetermined load threshold value when staircase starts and/or when staircase be in full and down run time.That is, when staircase is in start-up period, in order to reach command speed fast, now need large input, therefore, the first motor and the second motor are all arranged as by power frequency supply Direct driver, thus, the first motor and the second motor will have large horsepower output, thus realize quick start.Similarly, when staircase be in full and down run, such as, under staircase is in command speed, or when staircase having larger carrying, the first motor and the second motor also by power frequency supply Direct driver, to have large horsepower output.On the contrary, if escalator load is less, now, the first motor by transducer drive, thus has less horsepower output, and the second motor then can be in free rotational phase, thus, realizes farthest energy-conservation.
According to the abovementioned embodiments of the present invention, preferably, described staircase control setup also comprises and is connected to frequency converter and the first upcoming contact device in parallel between the first motor and the second motor and the first descending contactless switch, and be connected to power frequency supply and the second upcoming contact device in parallel between the first motor and the second motor and the second descending contactless switch, thus for controlling the uplink and downlink of elevator.Thus, control owing to having up-downgoing, staircase control setup of the present invention will have wider application.
According to the abovementioned embodiments of the present invention, preferably, described staircase control setup also comprises triangle for controlling the first motor and connects or the first connection delta tentaculum of star connection and the first star contact, and the triangle comprised for controlling the second motor connects or the second connection delta tentaculum of star connection and the second star contact.Thus, motor of the present invention can switch between triangle connection with star connection according to condition of loading, thus farthest realizes energy-conservation.
According to the abovementioned embodiments of the present invention, preferably, aforementioned mechanism is power-transfer clutch.Thus, freely rotating of the second motor is easily achieved.
According to the abovementioned embodiments of the present invention, preferably, described first motor is controlled as by power frequency supply Direct driver, switch by between transducer drive and power-off, and described second motor is controlled as being driven staircase by power frequency supply Direct driver, is in free rotary state and does not drive between staircase and power-off and switch.Thus, based on the practical situation of load, the first motor of the present invention and the second motor have corresponding fit system, thus realize farthest energy-conservation.
Will be appreciated that, foregoing description is only used to exemplary object, instead of will limit the scope of the invention.
Accompanying drawing explanation
Above-mentioned and the further feature of exemplary embodiment of the present invention and advantage will become more obvious from detailed description with the accompanying drawing below, and this description and accompanying drawing are only for exemplary purpose instead of limit the scope of the invention by any way, wherein:
Fig. 1 is the schematic circuit block diagram of staircase control setup according to a preferred embodiment of the invention.
Fig. 2 is a control example of staircase control setup according to a preferred embodiment of the invention.
Detailed description of the invention
Each exemplary embodiment of the present invention is described below with reference to accompanying drawings.
Aforementioned and other technology contents, feature and effect for the present invention, at following cooperation reference accompanying drawing in the detailed description of embodiment, can clearly present.
With reference to Fig. 1, the schematic circuit block diagram of staircase control setup is according to a preferred embodiment of the invention described.In the figure, for the ease of being clearly shown that the electrical connection situation between all parts, represent that the lines of the electric connection line between parts represent with dotted line, long and short dash line and solid line respectively, in figure, the dotted line of right-angled crossing and long and short dash line are not interconnected.Each lines that it should be noted that in Fig. 1 are only used to illustrate intuitively the situation of electric connection line, and it is only schematic, strictly do not follow the circuit tracing rule of standard.Such as, the dotted line occurred in figure, it is only represent a kind of connection mode, is not intended to mean that do not had actual line between the parts that dotted line connects.Again such as, represent in figure that the connection delta tentaculum of motor and star contact are series connection, it is only represent that motor can be connected at triangle by connection delta tentaculum and star contact to switch between star connection, does not represent that connection delta tentaculum and star contact are series connection.Those skilled in the art, in conjunction with existing knowledge, after having read the present invention, clearly, reasonably can understand the line situation of all parts in Fig. 1.
As shown in Figure 1, from left to right, frequency converter is electrically connected to the first upcoming contact device K1 in parallel and the first descending contactless switch K2, then the first frequency conversion contactless switch K25-1 and the second frequency conversion contactless switch K25-2 is connected in parallel to, then, first frequency conversion contactless switch K25-1 is connected to the first motor 1 via the first connection delta tentaculum K4 and/or the first star contact K3, and the second frequency conversion contactless switch K25-2 is connected to the second motor 2 via the second connection delta tentaculum K4-2 and/or the second star contact K3-2.Thus, the first motor 1 and the second motor 2 can respectively by the break-make of the first frequency conversion contactless switch K25-1 and the second frequency conversion contactless switch K25-2 by transducer drives.
Further, from left to right, power frequency supply is electrically connected to the second upcoming contact device K1-2 in parallel and the second descending contactless switch K2-2, then the first power frequency contactless switch K24-1 and the second power frequency contactless switch K24-2 is connected in parallel to, then, first power frequency contactless switch K24-1 is connected to the first motor 1 via the first connection delta tentaculum K4 and/or the first star contact K3, and the second power frequency contactless switch K24-2 is connected to the second motor 2 via the second connection delta tentaculum K4-2 and/or the second star contact K3-2.Thus, the first motor 1 and the second motor 2 can respectively by the break-make of the first power frequency contactless switch K24-1 and the second power frequency contactless switch K24-2 by power frequency supply Direct driver.
It should be noted that in this article, when mentioning by power frequency supply Direct driver, it represents without frequency converter Direct driver.
It is also to be noted that, the embodiment of Fig. 1 is the preferred embodiments of the present invention, in alternative embodiments of the present invention, up-downgoing contactless switch and/or connection delta tentaculum and star contact can not had, in this case, then staircase runs at single direction, or motor is with singular association mode (triangle connects or star connection) work.
It is also to be noted that the present invention is not limited to only have two motors, but, more motors can also be had, such as, the 3rd motor can be had, and the 3rd motor can be by power frequency supply Direct driver, also can be by transducer drive.Preferably, when having more than two motors, whole control setup preferably only use 1 frequency converter, namely control all contactless switchs by 1 frequency converter, thus realize various mode, this be conducive to cost reduce and control circuit integrated.
One control example of staircase control setup is according to a preferred embodiment of the invention described referring now to Fig. 2.
Fig. 2 is divided into upper, middle, and lower part, and wherein, upper part illustrates a curve, and it represents the load of staircase, that is, need the load driven by motor, wherein, ordinate represents load, abscissa representing time.Such as, from 0 to A point, represent that load constantly increases, such as staircase is in from the standing start stage, represents that load is in maximum situation from A point to B point, such as staircase runs with command speed, reduce representing load from B point to C point, then remain on described reduction state, then increase to the maximum load stage, it represents, such as accompanying drawing reduces speed now from command speed, keep low speed, then accelerate.From C point to the situation of J point with similar above, repeat no more.
The middle part of Fig. 2 represents the power supply input situation of the first motor under the staircase load of the upper part of corresponding diagram 2, and such as, " power frequency supply " represents that the first motor is by power frequency supply Direct driver; " frequency converter " represents by transducer drive; " power-off " represents that unregulated power inputs.
The lower part of Fig. 2 represents the power supply input situation of the second motor under the staircase load of the upper part of corresponding diagram 2, and similar to the first motor, such as, " power frequency supply " represents that the second motor is by power frequency supply Direct driver; " freely rotate " and represent by transducer drive but make the second motor freely rotate (idle running) by a mechanism such as power-transfer clutch, namely there is no output torque to staircase; " power-off " represents that unregulated power inputs; " phase synchronization " represent the second motor by freely rotate switch to power frequency supply to drive time, advanced line phase is synchronous, with the phase synchronization of the input power with the first motor.
Specifically describe As time goes on below, how the first motor and the second motor work based on staircase load.When from 0 to A point, staircase is in start-up period, and speed constantly increases, and now need larger power input, therefore, the first motor and the second motor were all in by the power frequency supply Direct driver stage.When from A point to B point, staircase is in the command speed stage, and now load is still comparatively large, and therefore, the first motor and the second motor were still all in by the power frequency supply Direct driver stage.When from B point to C point, staircase is in lower than the command speed operation phase, now, do not need as the input torque under command speed, therefore, the first motor switches to by transducer drive, thus has less horsepower output, and the second motor is switched to free rotational phase, do not provide input torque to staircase.When when from C point to D point, staircase starts again to maintain command speed, now need larger power input, therefore, first motor starts to be switched to power frequency supply and directly powers, and the second motor also starts to be switched to and is directly powered by power frequency supply, but, second motor be not immediately with the first motor synchronous be switched to and powered by power frequency supply, but of short duration freely rotate after, start phase synchronization, and then be switched to and powered by power frequency supply, thus, the smooth transition of total output of two motors can be realized, staircase is avoided to occur string suddenly due to the input fluctuation of motor and affect travelling comfort.From D point to E point, staircase experienced by the stages such as deceleration, stopping, acceleration, and in the process, owing to being not be in maximum load, the first motor is by transducer drive, and the second motor then freely rotates.Thus, can realize farthest energy-conservation.
It should be noted that, in the example of figure 2, be in the switching condition as the power supply state of the first motor and the second motor under maximum load (command speed) by staircase, but, the present invention is not limited to this, also can using the load of another predetermined threshold as switching condition.
According to the switching of the power supply situation of the first motor and the second motor in Fig. 2, the break-make situation of each contactless switch in Fig. 1 easily can be known.
Such as, relative to load situation, the break-make situation of contactless switch can be arranged as follows:
When under the high capacity that staircase is in higher than predetermined load threshold value (the A-B stage in such as Fig. 2), first power frequency contactless switch K24-1 described in described Frequency Converter Control and described second power frequency contactless switch K24-2 connects and described first frequency conversion contactless switch K25-1 and described second frequency conversion contactless switch K25-2 disconnects, to make described first motor 1 and described second motor 2 by power frequency supply Direct driver.
When under the low load that staircase is in lower than aforementioned predetermined load threshold value (the B-C stage in such as Fig. 2), first frequency conversion contactless switch K25-1 described in described Frequency Converter Control connects and the first power frequency contactless switch K24-1 disconnects to make the first motor 1 by transducer drive, and control second frequency conversion contactless switch K25-2 connect and second power frequency contactless switch K24-2 disconnect and make described second motor (2) be in free rotary state by means of a mechanism such as power-transfer clutch, and
When staircase stops or intending to be switched to halted state (the F-J stage in such as Fig. 2), described in described Frequency Converter Control, the first frequency conversion contactless switch K25-1, the second frequency conversion contactless switch K25-2, the first power frequency contactless switch K24-1 and the second power frequency contactless switch K24-2 disconnect, to make the first motor 1 and the second motor 2 power-off.
And for the break-make situation of the upcoming contact device shown in Fig. 1 and descending contactless switch, it will be appreciated by those skilled in the art that when staircase is in the such as up stage, then closed the and descending contactless switch of upcoming contact device disconnects.It should be noted that, in this article, for there is the staircase of certain hoisting depth, the up service direction referred to from low to high, and for the moving sidewalk of the level on the staircase such as airport of level, uply refer to moving ahead such as along a direction, correspondingly, descendingly refer to moving ahead in the opposite direction.
Although with reference on the basis of each embodiment, the present invention has been described in the description and has been illustrated in the accompanying drawings, those skilled in the art will appreciate that above-described embodiment is only that preferred embodiment the present invention is not limited to this.In addition, the feature of an embodiment, key element and/or function suitably mutually can combine, combine or coordinate with the feature of other one or more embodiment, key element and/or function, unless this combination, combination or coordinate obviously can not be implemented.
Claims (7)
1. one kind for controlling the staircase control setup of the operation of staircase, described staircase has the first motor (1) and the second motor (2) for driving staircase, described staircase control setup controls the operation of described staircase by the operation controlling described first motor and the second motor
Wherein, described staircase control setup comprises frequency converter, the first frequency conversion contactless switch (K25-1), the second frequency conversion contactless switch (K25-2), the first power frequency contactless switch (K24-1) and the second power frequency contactless switch (K24-2)
Wherein, one end of described first frequency conversion contactless switch (K25-1) is connected to described frequency converter, and the other end is connected to the first motor (1),
Wherein, one end of described second frequency conversion contactless switch (K25-2) is connected to described frequency converter, and the other end is connected to the second motor (2),
Wherein, one end of described first power frequency contactless switch (K24-1) is used for being connected to power frequency supply, and the other end is connected to the first motor (1),
Wherein, one end of described second power frequency contactless switch (K24-2) is used for being connected to power frequency supply, and the other end is connected to the second motor (2),
Wherein, when under the high capacity that staircase is in higher than predetermined load threshold value, first power frequency contactless switch (K24-1) described in described Frequency Converter Control and described second power frequency contactless switch (K24-2) are connected and described first frequency conversion contactless switch (K25-1) and described second frequency conversion contactless switch (K25-2) disconnect, to make described first motor (1) and described second motor (2) by power frequency supply Direct driver
Wherein, when under the low load that staircase is in lower than aforementioned predetermined load threshold value, first frequency conversion contactless switch (K25-1) described in described Frequency Converter Control is connected and the first power frequency contactless switch (K24-1) disconnects to make the first motor (1) by transducer drive, and control second frequency conversion contactless switch (K25-2) connect and second power frequency contactless switch (K24-2) disconnect and make described second motor (2) be in free rotary state by means of a mechanism, and
Wherein, when staircase stops or intending to be switched to halted state, first frequency conversion contactless switch (K25-1), the second frequency conversion contactless switch (K25-2), the first power frequency contactless switch (K24-1) and the second power frequency contactless switch (K24-2) described in described Frequency Converter Control disconnect, to make the first motor (1) and the second motor (2) power-off.
2. staircase control setup as claimed in claim 1, wherein, aforesaid staircase comprises under being in the high capacity higher than predetermined load threshold value when staircase starts.
3. staircase control setup as claimed in claim 1, wherein, aforesaid staircase comprises under being in the high capacity higher than predetermined load threshold value when staircase is in full and down operation.
4. staircase control setup as claimed in claim 1, wherein, described staircase control setup also comprises and is connected to frequency converter and the first upcoming contact device (K1) in parallel between the first motor and the second motor and the first descending contactless switch (K2), and be connected to power frequency supply and the second upcoming contact device (K1-2) in parallel between the first motor and the second motor and the second descending contactless switch (K2-2), thus for controlling the uplink and downlink of elevator.
5. staircase control setup as claimed in claim 1, wherein, described staircase control setup also comprises triangle for controlling the first motor and connects or the first connection delta tentaculum (K4) of star connection and the first star contact (K3), and the second connection delta tentaculum (K4-2) of the triangle connection comprised for controlling the second motor or star connection and the second star contact (K3-2).
6. staircase control setup as claimed in claim 1, wherein, described mechanism is power-transfer clutch.
7. the staircase control setup as described in one of claim 1-6, wherein, described first motor is controlled as by power frequency supply Direct driver, switch by between transducer drive and power-off, and described second motor is controlled as being driven staircase by power frequency supply Direct driver, is in free rotary state and does not drive between staircase and power-off and switch.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410017433.8A CN104773642A (en) | 2014-01-15 | 2014-01-15 | Escalator control device |
| HK16100275.8A HK1212311A1 (en) | 2014-01-15 | 2016-01-12 | An escalator control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410017433.8A CN104773642A (en) | 2014-01-15 | 2014-01-15 | Escalator control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104773642A true CN104773642A (en) | 2015-07-15 |
Family
ID=53615462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410017433.8A Pending CN104773642A (en) | 2014-01-15 | 2014-01-15 | Escalator control device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104773642A (en) |
| HK (1) | HK1212311A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105151929A (en) * | 2015-08-14 | 2015-12-16 | 日立电梯（广州）自动扶梯有限公司 | Automatic escalator control method and system |
| CN105800440A (en) * | 2016-04-15 | 2016-07-27 | 日立电梯（广州）自动扶梯有限公司 | Escalator running control system |
| CN110515320A (en) * | 2018-05-22 | 2019-11-29 | 西门子股份公司 | Drive control method, drive system, processing system and storage medium |
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| US2864040A (en) * | 1955-02-01 | 1958-12-09 | David M Trotsky | Multiple electric motor drive system |
| US3845366A (en) * | 1971-07-22 | 1974-10-29 | Fincor Inc | Integrated drive system |
| US4056759A (en) * | 1973-06-04 | 1977-11-01 | Hitachi, Ltd. | Driving system for moving paths or escalators |
| US20030000801A1 (en) * | 2001-06-15 | 2003-01-02 | Otis Elevator Company | Process for switching between mains supply and a frequency inverter and vice versa |
| CN2923639Y (en) * | 2006-06-19 | 2007-07-18 | 广州日立电梯有限公司 | Frequency-variable staircase energy saving device |
| CN101298308A (en) * | 2008-06-30 | 2008-11-05 | 日立电梯（中国）有限公司 | Double main unit driven escalator or walkway |
| CN201190075Y (en) * | 2007-10-31 | 2009-02-04 | 苏州新达电扶梯部件有限公司 | Drive control system of escalator or automatic footway |
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- 2014-01-15 CN CN201410017433.8A patent/CN104773642A/en active Pending
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- 2016-01-12 HK HK16100275.8A patent/HK1212311A1/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2864040A (en) * | 1955-02-01 | 1958-12-09 | David M Trotsky | Multiple electric motor drive system |
| US3845366A (en) * | 1971-07-22 | 1974-10-29 | Fincor Inc | Integrated drive system |
| US4056759A (en) * | 1973-06-04 | 1977-11-01 | Hitachi, Ltd. | Driving system for moving paths or escalators |
| US20030000801A1 (en) * | 2001-06-15 | 2003-01-02 | Otis Elevator Company | Process for switching between mains supply and a frequency inverter and vice versa |
| CN1392667A (en) * | 2001-06-15 | 2003-01-22 | 奥蒂斯电梯公司 | Switch over improving method between power source and frequency converter |
| CN2923639Y (en) * | 2006-06-19 | 2007-07-18 | 广州日立电梯有限公司 | Frequency-variable staircase energy saving device |
| CN201190075Y (en) * | 2007-10-31 | 2009-02-04 | 苏州新达电扶梯部件有限公司 | Drive control system of escalator or automatic footway |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105151929A (en) * | 2015-08-14 | 2015-12-16 | 日立电梯（广州）自动扶梯有限公司 | Automatic escalator control method and system |
| CN105800440A (en) * | 2016-04-15 | 2016-07-27 | 日立电梯（广州）自动扶梯有限公司 | Escalator running control system |
| CN110515320A (en) * | 2018-05-22 | 2019-11-29 | 西门子股份公司 | Drive control method, drive system, processing system and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1212311A1 (en) | 2016-06-10 |
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