CN103771210B - Construction elevator runs height acquisition system and method - Google Patents
Construction elevator runs height acquisition system and method Download PDFInfo
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- CN103771210B CN103771210B CN201410010676.9A CN201410010676A CN103771210B CN 103771210 B CN103771210 B CN 103771210B CN 201410010676 A CN201410010676 A CN 201410010676A CN 103771210 B CN103771210 B CN 103771210B
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Abstract
The invention provides a kind of construction elevator and run height acquisition system, the car of described construction elevator is run by the driven by motor of transducer drive, this height acquisition system comprises time meter, height calculation unit, wherein: described time meter starts when frequency converter brings into operation; Described height calculation unit makes described time meter restart when time meter reaches Preset Time, and calculates the height change value of car in this cycle and the last cycle car height that added up by this height change value obtains current car height simultaneously.The present invention also provides a kind of construction elevator of correspondence to run height acquisition method.The present invention calculates car height by frequency converter output frequency, can realize car height data acquisition, can significantly reduce construction elevator cost and reduce the fault point without the need to increasing external equipment.
Description
Technical field
The present invention relates to construction elevator control field, more particularly, relate to a kind of construction elevator and run height acquisition system and method.
Background technology
Construction elevator is commonly referred to building hoist, it is made up of a few part such as car, driver train (such as frequency converter and motor), standard knot, attached wall, chassis, fence, electric system, the manned cargo-carrying construction machinery and equipment often used in building. construction elevator coordinates tower crane to use on-site usually, general load carrying ability is at 1-3 ton, and running velocity is 1-60M/min.
The operation altitude information of construction elevator has very great significance for tool monitoring and data statistics system.Generally adopt the method installing external equipment additional to carry out calculated altitude in current industry, wherein applying maximum modes is install coder additional, by the pulse count cumulative calculation height of encoder feedback.
But, external equipment is installed additional to construction elevator and can bring two problems: the increase of cost and the increase of trouble point.To install coder additional: prevailing incremental encoder needs hundreds of unit, for having competed the elevator electric-control system of reaching the decisive stage at present, this has been a no small number; And due to construction elevator operation in the open, if coder protection is tight not, exposes to the weather and just easily damage, once coder lost efficacy, whole high computational module had just been paralysed.
In addition, because camp site environment is noisy, various electromagnetic interference is serious, and coder is very easy to be subject to periphery and disturbs and cisco unity malfunction, the impulse singla now feeding back to frequency converter just there will be deviation, and the height value that frequency converter calculates also can produce certain error.
Because construction elevator adopts open loop mode mostly, therefore motor shaft does not reserve the mounting interface of coder usually.User can only install coder at the mechanical gear place of construction elevator, and this adds many difficulty with regard to giving the installation of coder.Add the vibrations of machinery, the reliability that coder is applied for a long time is also no small hidden danger.
Summary of the invention
The technical problem to be solved in the present invention is, the problem high for above-mentioned construction elevator high computational cost, trouble point is many, provides a kind of construction elevator to run height acquisition system and method.
The technical scheme that the present invention solves the problems of the technologies described above is, a kind of construction elevator is provided to run height acquisition system, the car of described construction elevator is run by the driven by motor of transducer drive, this height acquisition system comprises time meter, height calculation unit, wherein: described time meter starts when frequency converter brings into operation; Described height calculation unit makes described time meter restart when time meter reaches Preset Time, and calculates the height change value of car in this cycle and the last cycle car height that added up by this height change value obtains current car height simultaneously;
Described height calculation unit comprises frequency computation part subelement, changing value computation subunit and highly cumulative subelement, wherein: described frequency computation part subelement, for calculating the average output frequency F of frequency converter in this cycle when time meter reaches Preset Time; Described changing value computation subunit, for calculating the car height changing value of current period according to described average output frequency F; Described height adds up subelement, and for being added up by the height change value of car in current period, last cycle car height obtains present level.
Run in height acquisition system at construction elevator of the present invention, described height acquisition system also comprises function code setting unit, for the speed of the car of described construction elevator when frequency converter runs with rated frequency F1 is set to specified running velocity V1; Described changing value computation subunit is by the car height changing value X:X=V1* (F/F1) of following formulae discovery current period.
Run in height acquisition system at construction elevator of the present invention, described Preset Time is 100ms.
The present invention also provides a kind of construction elevator to run height acquisition method, and the car of described construction elevator is run by the driven by motor of transducer drive, and the method comprises the following steps:
A (), when frequency converter brings into operation, starts time meter;
B () described time meter runs;
C () judges whether described time meter reaches Preset Time, and perform step (d) when time meter reaches Preset Time, otherwise returns step (b);
D () makes described time meter restart, calculate the height change value of car in this cycle and the last cycle car height that added up by this height change value obtains current car height simultaneously;
Described step (d) comprising:
(d1) the average output frequency F of frequency converter in this cycle is calculated;
(d2) the car height changing value of current period is calculated according to described average output frequency F;
(d3) the last cycle car height that added up by the height change value of car in current period obtains present level.
Run in height acquisition method at construction elevator of the present invention, comprise before described step (a): the speed of the car of described construction elevator when frequency converter runs with rated frequency F1 is set to specified running velocity V1; The car height changing value X=V1* (F/F1) of current period in described step (d2).
Run in height acquisition method at construction elevator of the present invention, described Preset Time is 100ms.
Construction elevator of the present invention runs height acquisition system and method, calculates car height, can realize car height data acquisition, can significantly reduce construction elevator cost and reduce the fault point without the need to increasing external equipment by frequency converter output frequency.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that construction elevator of the present invention runs height acquisition system embodiment.
Fig. 2 is the schematic diagram of height calculation unit in Fig. 1.
Fig. 3 is the schematic flow sheet that construction elevator of the present invention runs height acquisition method embodiment.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, be the schematic diagram that construction elevator of the present invention runs height acquisition system embodiment, the driven by motor that the car of this construction elevator is driven by frequency converter 11 is run.Height acquisition system in the present embodiment comprises time meter 12 and height calculation unit 13, and above-mentioned time meter 12 and height calculation unit 13 accessible site, to the electric-control system of construction elevator or frequency converter, also can be realized by independently device.
Above-mentioned time meter 12 starts when frequency converter 11 brings into operation, be such as pressed by the operation button of electric-control system and frequency converter 11 is energized time start.This time meter 12 can be the built-in timer of the main control chip of electric-control system, also can adopt independently time meter.
Height calculation unit 13 makes time meter 12 restart when time meter 12 reaches Preset Time, and calculates the height change value of car in this cycle simultaneously, and the last cycle car height that added up by this height change value obtains current car height.The current car height that above-mentioned height calculation unit 13 obtains can be stored into a memory device, thus uses when being convenient to the car height calculating next cycle.And the height change value of above-mentioned car is for representing cage descending time negative, is that timing represents that car rises at height change value.
Above-mentioned Preset Time, namely the computation period of diff-H can be 100ms, thus height calculation unit 13 carries out a car height collection every 100ms.In actual applications, the value of above-mentioned Preset Time can adjust as required, and the value of Preset Time is less, and the precision of high computational is higher.
Above-mentioned construction elevator runs height acquisition system, external equipment (such as coder) need not be increased and can realize the data acquisition of construction elevator car height, greatly save overall cost, and decrease trouble point (namely without the need to worrying extra external equipment fault).And adopt the construction elevator of said structure, just can obtain the cage operation height of construction elevator without the need to debugging, thus on-the-spot common building workman can operate.
As shown in Figure 2, be the schematic diagram of specific implementation of height calculation unit 13 in Fig. 1.This height calculation unit 13 comprises frequency computation part subelement 131, changing value computation subunit 132 and highly cumulative subelement 133.Said frequencies computation subunit 131, changing value computation subunit 132 and highly cumulative subelement 133 can respectively by the software simulating running on same hardware.
Frequency computation part subelement 131 is for calculating the average output frequency F of frequency converter 11 in this cycle when time meter 12 reaches Preset Time.Because usual Preset Time is less, the aviation value of frequency when frequency when therefore average output frequency can directly adopt each cycle initial and this cycle end is as the average frequency (certainly also can adopt more accurate account form) in this cycle.In addition, frequency converter perform on line command time, frequency computation part subelement 131 make average output frequency for just, frequency converter perform down order time, frequency computation part subelement 131 makes average output frequency be negative.
Changing value computation subunit 132 is for calculating the car height changing value that the average output frequency obtained calculates current period according to frequency computation part subelement 131.
Highly cumulative subelement 133 obtains current car height for the last cycle car height that added up by the height change value of car in current period.When specific implementation, this highly cumulative subelement 133 can be stored into a memory storage (FLASH etc. in the register of the main control chip of such as electric-control system or electric-control system), for the high computational in next cycle by the cumulative current car height obtained.When calculating the car height of current period, also obtain the car height in last cycle from this memory storage.
Above-mentioned construction elevator runs height acquisition system also can comprise a function code setting unit, this function code setting unit is for increasing function code, namely the speed of the car of construction elevator when frequency converter runs with rated frequency F1 is set to specified running velocity V1 (such as its unit for m/min, and be scaled rice/100ms by changing value computation subunit 132; Or be directly set to rice/100ms).Now, changing value computation subunit 132 is by the car height changing value X:X=V1* (F/F1) of following formulae discovery current period.
As shown in Figure 3, be the schematic flow sheet that construction elevator of the present invention runs height acquisition method embodiment, the car of above-mentioned construction elevator is run by the driven by motor of transducer drive, and the method comprises the following steps:
Step S31: when frequency converter brings into operation, starts time meter.This time meter specifically can the operation button of electric-control system be pressed and frequency converter energising time start.And this time meter can be the built-in timer of the main control chip of electric-control system, also independently time meter can be adopted.
Step S32: time meter carries out counting and runs.
Step S33: judge whether time meter reaches Preset Time, and perform step S34 when time meter reaches Preset Time, otherwise return step S32.
Above-mentioned Preset Time, namely the computation period of diff-H can be 100ms, thus can carry out a car height collection every 100ms.In actual applications, the value of above-mentioned Preset Time can adjust as required, and the value of Preset Time is less, and the precision of high computational is higher.
Step S34: time meter is restarted (car height for calculating next cycle calculates), calculates the height change value of car in this cycle simultaneously and the last cycle car height that added up by this height change value obtains current car height.
In this step, first the average output frequency F of frequency converter in this cycle can be calculated, then the average output frequency F obtained according to above-mentioned calculating calculates the car height changing value of current period, and the last cycle car height that finally added up by the height change value of car in current period obtains present level.
When specific implementation, in above-mentioned steps S34, the cumulative current car height obtained can be stored into a memory storage (FLASH etc. in the register of the main control chip of such as electric-control system or electric-control system), for the high computational in next cycle.When calculating the car height of current period, also obtain the car height in last cycle from this memory storage.
Run in height acquisition method at above-mentioned construction elevator, can comprise before step S31: the speed of the car of construction elevator when frequency converter runs with rated frequency F1 is set to specified running velocity V1; Thus following formula can be adopted when the height change value carrying out car calculates: the car height changing value X=V1* (F/F1) of current period.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (6)
1. a construction elevator runs height acquisition system, the car of described construction elevator is run by the driven by motor of transducer drive, it is characterized in that: this height acquisition system comprises time meter, height calculation unit, wherein: described time meter starts when frequency converter brings into operation; Described height calculation unit makes described time meter restart when time meter reaches Preset Time, and calculates the height change value of car in this cycle and the last cycle car height that added up by this height change value obtains current car height simultaneously;
Described height calculation unit comprises frequency computation part subelement, changing value computation subunit and highly cumulative subelement, wherein: described frequency computation part subelement, for calculating the average output frequency F of frequency converter in this cycle when time meter reaches Preset Time; Described changing value computation subunit, for calculating the car height changing value of current period according to described average output frequency F; Described height adds up subelement, and for being added up by the height change value of car in current period, last cycle car height obtains present level.
2. construction elevator according to claim 1 runs height acquisition system, it is characterized in that: described height acquisition system also comprises function code setting unit, for the speed of the car of described construction elevator when frequency converter runs with rated frequency F1 is set to specified running velocity V1; Described changing value computation subunit is by the car height changing value X:X=V1* (F/F1) of following formulae discovery current period.
3. the construction elevator according to any one of claim 1-2 runs height acquisition system, it is characterized in that: described Preset Time is 100ms.
4. construction elevator runs a height acquisition method, and the car of described construction elevator is run by the driven by motor of transducer drive, it is characterized in that: the method comprises the following steps:
A (), when frequency converter brings into operation, starts time meter;
B () described time meter runs;
C () judges whether described time meter reaches Preset Time, and perform step (d) when time meter reaches Preset Time, otherwise returns step (b);
D () makes described time meter restart, calculate the height change value of car in this cycle and the last cycle car height that added up by this height change value obtains current car height simultaneously;
Described step (d) comprising:
(d1) the average output frequency F of frequency converter in this cycle is calculated;
(d2) the car height changing value of current period is calculated according to described average output frequency F;
(d3) the last cycle car height that added up by the height change value of car in current period obtains present level.
5. construction elevator according to claim 4 runs height acquisition method, it is characterized in that: comprise before described step (a): the speed of the car of described construction elevator when frequency converter runs with rated frequency F1 is set to specified running velocity V1; The car height changing value X=V1* (F/F1) of current period in described step (d2).
6. the construction elevator according to any one of claim 4-5 runs height acquisition method, it is characterized in that: described Preset Time is 100ms.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410010676.9A CN103771210B (en) | 2014-01-09 | 2014-01-09 | Construction elevator runs height acquisition system and method |
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| CN201410010676.9A CN103771210B (en) | 2014-01-09 | 2014-01-09 | Construction elevator runs height acquisition system and method |
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| CN103771210A CN103771210A (en) | 2014-05-07 |
| CN103771210B true CN103771210B (en) | 2016-04-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105110113A (en) * | 2015-07-28 | 2015-12-02 | 苏州汇川技术有限公司 | Elevator floor leveling position control system and method |
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| US3098992A (en) * | 1960-12-30 | 1963-07-23 | Peelle Co The | Position sensing and control means |
| US3777855A (en) * | 1971-07-19 | 1973-12-11 | Elevators Pty Ltd | Pattern generator for the control of motion of a body movable over a predetermined path |
| US4624005A (en) * | 1983-10-28 | 1986-11-18 | Mitsubishi Denki Kabushiki Kaisha | Velocity detection apparatus for an elevator |
| US4976338A (en) * | 1989-04-27 | 1990-12-11 | Delaware Capital Formation, Inc. | Leveling control system for hydraulic elevator |
| JP3011517B2 (en) * | 1992-01-27 | 2000-02-21 | 株式会社東芝 | Elevator control device |
| CN103350939A (en) * | 2013-07-03 | 2013-10-16 | 南通东之杰电气有限公司 | Intelligent and sensing type construction hoist |
| CN103449271A (en) * | 2013-08-20 | 2013-12-18 | 哈尔滨东建机械制造有限公司 | DSP (Digital Signal Processor)-based control device of variable-frequency construction lifting device and method for realizing automatic leveling of lifting device by adopting control device |
| CN203387460U (en) * | 2013-08-20 | 2014-01-08 | 哈尔滨东建机械制造有限公司 | Frequency converter control-based elevating device |
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2014
- 2014-01-09 CN CN201410010676.9A patent/CN103771210B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3098992A (en) * | 1960-12-30 | 1963-07-23 | Peelle Co The | Position sensing and control means |
| US3777855A (en) * | 1971-07-19 | 1973-12-11 | Elevators Pty Ltd | Pattern generator for the control of motion of a body movable over a predetermined path |
| US4624005A (en) * | 1983-10-28 | 1986-11-18 | Mitsubishi Denki Kabushiki Kaisha | Velocity detection apparatus for an elevator |
| US4976338A (en) * | 1989-04-27 | 1990-12-11 | Delaware Capital Formation, Inc. | Leveling control system for hydraulic elevator |
| JP3011517B2 (en) * | 1992-01-27 | 2000-02-21 | 株式会社東芝 | Elevator control device |
| CN103350939A (en) * | 2013-07-03 | 2013-10-16 | 南通东之杰电气有限公司 | Intelligent and sensing type construction hoist |
| CN103449271A (en) * | 2013-08-20 | 2013-12-18 | 哈尔滨东建机械制造有限公司 | DSP (Digital Signal Processor)-based control device of variable-frequency construction lifting device and method for realizing automatic leveling of lifting device by adopting control device |
| CN203387460U (en) * | 2013-08-20 | 2014-01-08 | 哈尔滨东建机械制造有限公司 | Frequency converter control-based elevating device |
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| CN103771210A (en) | 2014-05-07 |
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