CN104860149B - Building hoist load testing method and frequency converter - Google Patents
Building hoist load testing method and frequency converter Download PDFInfo
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- CN104860149B CN104860149B CN201510190642.7A CN201510190642A CN104860149B CN 104860149 B CN104860149 B CN 104860149B CN 201510190642 A CN201510190642 A CN 201510190642A CN 104860149 B CN104860149 B CN 104860149B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/14—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of excessive loads
- B66B5/145—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of excessive loads electrical
Abstract
Building hoist load testing method is converted to exciting current, torque current under M T rotating coordinate systems by detecting the three-phase phase current of frequency converter；Actual motor torque is calculated with reference to the nominal torque of exciting current, torque current and construction lifter motor；And then can according to overload when motor gear torque calculation building hoist load when the first climbing power and it is unloaded when the second climbing power；Therefore, when the difference of the first climbing power and the second climbing power is more than overload climbing power, the building hoist is forbidden to work.So as to obtain the load of building hoist, without external weighing sensor, and then the reliability and interference sex chromosome mosaicism that external weighing sensor brings can be avoided.In addition, also provide a kind of frequency converter based on building hoist.
Description
Technical field
The present invention relates to frequency converter, more particularly to a kind of frequency converter based on building hoist and building hoist load
Detection method.
Background technology
In current building hoist application, transducer drive is good with its startup stationarity, and impact is small, is just obtaining more next
More it is widely applied.But in general application, frequency converter is only that instead of original star triangle start and input power to enter
Row motor, not the system with building hoist integrally combine.Such as indispensable overload protector in building hoist.
Current most of building hoist is provided with independent weighing sensor and overload protector, and weighing sensor detects construction in real time
The load of lift, and signal is transmitted to overload protector, when overload protector judges excess of export according to the signal of weighing sensor
After load, directly cut off the electricity supply, carry out overload protection.But need to consider that the connection between each device is asked using outside weighing sensor
Topic, and influence whether the reliability and interference sex chromosome mosaicism of system.It cannot be guaranteed if not using outside weighing sensor super
Alarm is carried, therefore there can be safety problem.
The content of the invention
Based on this, it is necessary to provide a kind of building hoist load testing method of integrated weighing and sensing function.
A kind of building hoist load testing method, comprises the following steps：
In building hoist zero load, exciting current, the torque current of frequency converter are obtained；According to exciting current, torque electricity
The nominal torque of stream and construction lifter motor, calculate actual torque of the building hoist in zero load；According to building hoist
Actual torque in zero load calculates the second climbing power during building hoist zero load；
In load of construction elevator, the three-phase phase current of frequency converter is converted to the excitation electricity under M-T rotating coordinate systems
Stream, torque current；Building hoist is calculated negative according to the nominal torque of exciting current, torque current and construction lifter motor
Actual torque during load；First when calculating load of construction elevator according to actual torque of the building hoist in load rises
Power；
Judge whether the difference of the first climbing power and the second climbing power is more than overload climbing power, if so, then forbidding described apply
Work elevator duty；If it is not, the then building hoist normal work.
In one of the embodiments, it is described that the three-phase phase current of frequency converter is converted into encouraging under M-T rotating coordinate systems
The step of magnetoelectricity stream, torque current, includes：
Phase current sensing electric circuit inspection according to built in frequency converter goes out the biphase current of building hoist, and according to three-phase phase
Electric current sum of zero obtains third phase electric current, obtains three-phase phase current；
The three-phase phase current of acquisition is converted into electric current under two-phase rest frame by Clarke transformation for mula；
Synchronizing frequency We is integrated to obtain coordinate transform angle；
According to coordinate transform angle, sine value and cosine value are calculated；
Sine value and cosine value are calculated according to coordinate transform angle and correspondingly, the electric current under two-phase rest frame is led to
Cross park and convert exciting current, the torque current be converted under M-T rotating coordinate systems.
In one of the embodiments, it is described in building hoist zero load, obtain exciting current, the torque electricity of frequency converter
The step of stream, includes：
The running current during building hoist constant-speed operation is taken under building hoist Light Condition；
The exciting current and torque current during zero load are calculated according to principle of vector control and running current.
In one of the embodiments, specified turn according to exciting current, torque current and construction lifter motor
Square calculates actual torque of the building hoist in zero load or according to exciting current, torque current and construction lifter motor
Nominal torque calculate building hoist load when actual torque the step of include：
According to formula (1) calculating torque coefficient；
Wherein,For moment coefficient, ItfedFor torque current, ItRefRateFor Rated motor torque current；
Actual motor torque is calculated according to formula (2)；
Wherein, TnFor Rated motor torque, actual torque when T is motor load or is unloaded.
In one of the embodiments, first during the calculating load of construction elevator according to the actual motor torque
The step of climbing power, includes：
According to the torque of motor gear when formula (1) and formula (2) computational load, and obtain motor gear radius and exchange
Tool transmission efficiency；
First climbing power is calculated according to formula (3)；
F12=T1* R*U formula (3)；
Wherein, F12For the first climbing power, T1The actual torque of motor during to load, R is motor gear radius, and U is exchange
Tool transmission efficiency.
In one of the embodiments, second during the calculating building hoist zero load according to the actual motor torque
The step of climbing power, includes：
The torque of motor gear when calculating unloaded according to formula (1) and formula (2), and obtain motor gear radius and exchange
Tool transmission efficiency；
Second climbing power is calculated according to formula (4)；
F20=T2* R*U formula (4)；
Wherein, F20For the second climbing power, T2For zero load when motor actual torque, R is motor gear radius, and U is exchange
Tool transmission efficiency.
In one of the embodiments, in addition to：
The Rated motor torque current is calculated according to formula (5) and obtained；
Wherein, ItRefRateFor Rated motor torque current, IrateFor Rated motor electric current, ImFor exciting current.
Above-mentioned building hoist load testing method is converted to M-T rotations by detecting the three-phase phase current of frequency converter
Exciting current, torque current under coordinate system；With reference to the nominal torque meter of exciting current, torque current and construction lifter motor
Calculate actual motor torque；And then can according to overload when motor gear torque calculation building hoist load when first on
Lift and it is unloaded when the second climbing power；Therefore, when the difference of the first climbing power and the second climbing power is more than overload climbing power,
The building hoist is forbidden to work.So as to obtain the load of building hoist, without external weighing sensor, and then
The reliability and interference sex chromosome mosaicism that external weighing sensor is brought can be avoided.
In addition, also provide a kind of frequency converter based on building hoist of integrated weighing and sensing function.
A kind of frequency converter based on building hoist, including unloaded load identification module, load computing module, overload protection
Module and processing module；
Unloaded load identification module, the load computing module and the overload protection module are all connected with the processing
Module；
The unloaded load identification module is used to detect the building hoist under the building hoist Light Condition
The first load；
The load computing module is used to calculate second load of the building hoist in normal operation；
The processing module is used to judge whether the difference of first load and the second load to be more than overload load
Amount, if so, then the overload protection module forbids the building hoist to work；If it is not, the then normal work of the building hoist
Make.
In one of the embodiments, the unloaded load identification module and the load computing module pass through frequency converter
Analog interface receive load cell signal and be converted to corresponding load.
In one of the embodiments, the processing module is additionally operable to the first load, the second load overload load
Amount corresponding conversion is the first climbing power, the second climbing power and overload climbing power, and judges the first climbing power and the second climbing power
Whether difference is more than overload climbing power, if so, then the overload protection module forbids the building hoist to work；If it is not, then
The building hoist normal work.
The above-mentioned frequency converter based on building hoist can be recognized module by unloaded load and detect building hoist zero load
The first load under state, load computing module can calculate second load of the building hoist in normal operation, and
Processing module then judges whether the building hoist overloads according to the first load, the second load and overload load.
During overload, overload protection module can forbid building hoist to work, and avoid because safety problem occurs in overload.Therefore, above-mentioned base
In building hoist frequency converter without external weighing sensor, module, load computing module are only recognized just by unloaded load
The load of building hoist can be obtained, it is thus possible to avoid reliability that external weighing sensor is brought and interference from asking
Topic.
Brief description of the drawings
Fig. 1 is the flow chart of building hoist load testing method；
The flow chart of frequency converter exciting current and torque current is obtained when Fig. 2 is building hoist zero load；
The flow chart of actual motor torque is calculated when Fig. 3 is building hoist zero load；
Fig. 4 is the flow chart that the second climbing power is calculated during building hoist zero load；
The flow chart of frequency converter exciting current and torque current is calculated when Fig. 5 is load of construction elevator；
The flow chart of actual motor torque is calculated when Fig. 6 is load of construction elevator；
Fig. 7 calculates the flow chart of the second climbing power when being load of construction elevator；
Fig. 8 is the module map of the frequency converter based on lift.
Embodiment
As shown in figure 1, the flow chart for building hoist load testing method.
A kind of building hoist load testing method, comprises the following steps：
Step S110, in building hoist zero load, obtain exciting current, the torque current of frequency converter；According to excitation electricity
The nominal torque of stream, torque current and construction lifter motor, calculate actual torque of the building hoist in zero load；According to applying
Actual torque of the work lift in zero load calculates the second climbing power during building hoist zero load
As shown in Fig. 2 to obtain the flow chart of frequency converter exciting current and torque current during building hoist zero load.
It is described to include in building hoist zero load, the step of the exciting current, the torque current that obtain frequency converter：
Step 121, the running current during building hoist constant-speed operation is taken under building hoist Light Condition.
Step 122, the exciting current and torque current during zero load are calculated according to principle of vector control and running current.
Specifically, in building hoist Light Condition, running current I during building hoist constant-speed operation is taken0.Root again
According to principle of vector control, I2=It 2+Im 2, wherein, I is current of electric, ItFor torque current, ImFor exciting current, can calculate
Go out torque current during building hoist zero load
In building hoist zero load, obtain exciting current and after calculating torque current, can by exciting current and
Torque current calculates actual torque of the building hoist in zero load.
As shown in figure 3, to calculate the flow chart of actual motor torque during building hoist zero load.
It is described that building hoist is calculated in sky according to the nominal torque of exciting current, torque current and construction lifter motor
The step of actual torque during load, includes：
Step S131, according to formula (1) calculating torque coefficient；
Wherein,For moment coefficient, Itfed2For torque current, ItRefRateFor Rated motor torque current；
Step 132, actual motor torque is calculated according to formula (2)；
Wherein, TnFor Rated motor torque, T2For empty load of motor when actual torque.
In the present embodiment, to precalculate acquisition, Rated motor torque current then needs further to calculate torque current
Obtain.
Obtained specifically, the Rated motor torque current calculates according to formula (5)；
Wherein, ItRefRateFor Rated motor torque current, IrateFor Rated motor electric current, ImFor the exciting current of motor.
Rated motor torque current when obtaining unloaded according to exciting current.Finally need to substitute into Rated motor torque current
Formula (1), which calculates, obtains moment coefficient.
As shown in figure 4, to calculate the flow chart of the second climbing power during building hoist zero load.
It is described according to the actual motor torque calculate building hoist zero load when the second climbing power the step of include：
Step S141, the torque of motor gear when calculating unloaded according to formula (1) and formula (2), and obtain motor gear
Radius and overall mechanical transmission efficiency.
Step S142, the second climbing power is calculated according to formula (4)；
F20=T2* R*U formula (4)；
Wherein, F20For the second climbing power, T2For zero load when motor actual torque, R is motor gear radius, and U is exchange
Tool transmission efficiency.
In the actual torque for calculating motor when obtaining unloaded, and directly obtain motor gear radius and overall mechanical transmission effect
After rate, it can be calculated according to formula (4) and obtain the second climbing power.
In the present embodiment, climbing power when the second climbing power is building hoist zero load.
Step S120, in load of construction elevator, the three-phase phase current of frequency converter is converted under M-T rotating coordinate systems
Exciting current, torque current；Construction is calculated according to the nominal torque of exciting current, torque current and construction lifter motor to rise
Actual torque of the drop machine in load；When calculating load of construction elevator according to actual torque of the building hoist in load
First climbing power.
As shown in figure 5, to calculate the flow chart of frequency converter exciting current and torque current during load of construction elevator.
The exciting current three-phase phase current of frequency converter is converted under M-T rotating coordinate systems, the step of torque current
Suddenly include：
Step S151, the phase current sensing electric circuit inspection according to built in frequency converter go out the biphase current of building hoist, and
Third phase electric current is obtained according to three-phase phase current sum of zero, obtains three-phase phase current.
Step S152, the three-phase phase current of acquisition is converted into electricity under two-phase rest frame by Clarke transformation for mula
Stream.
Step S153, synchronizing frequency We is integrated to obtain coordinate transform angle.
Step S154, according to coordinate transform angle, calculate sine value and cosine value.
Step S155, sine value and cosine value are calculated according to coordinate transform angle and correspondingly, by two-phase rest frame
Under electric current exciting current, torque current under M-T rotating coordinate systems are converted to by park conversion.
In the present embodiment, building hoist exciting current in the loaded state and torque current need to be calculated.
Specifically, third phase electric current is obtained according to three-phase phase current sum of zero.Then Clarke conversion is passed sequentially through, park conversion obtains
Obtain exciting current, the torque current under M-T rotating coordinate systems.
, it is necessary to coordinate transform angle and corresponding sine value, cosine value corresponding to asking for before park conversion.
As shown in fig. 6, to calculate the flow chart of actual motor torque during load of construction elevator.
The Rated motor torque current is calculated according to formula (5) and obtained；
Wherein, ItRefRateFor Rated motor torque current, IrateFor Rated motor electric current, ImFor exciting current.
In the present embodiment, it is described to be calculated according to the nominal torque of exciting current, torque current and construction lifter motor
Building hoist load when actual torque the step of include
Step 161, according to formula (1) calculating torque coefficient；
Wherein,For moment coefficient, Itfed1For torque current, ItRefRate1For Rated motor torque current.
Step 162, actual motor torque is calculated according to formula (2)；
Wherein, TnFor Rated motor torque, T1The actual torque of motor during to load.
In the present embodiment, to precalculate acquisition, Rated motor torque current then needs further to calculate torque current
Obtain.
Obtained specifically, the Rated motor torque current calculates according to formula (5)；
Wherein, ItRefRateRated motor torque current during to load, IrateRated motor electric current during to load, ImFor
Exciting current during load.
Rated motor torque current when loading is obtained according to exciting current.Finally need to substitute into Rated motor torque current
Formula (1), which calculates, obtains moment coefficient.
As shown in fig. 7, to calculate the flow chart of the first climbing power during load of construction elevator.
It is described according to the actual motor torque calculate load of construction elevator when the first climbing power the step of include：
Step S171, according to the torque of motor gear when formula (1) and formula (2) computational load, and obtain motor gear
Radius and overall mechanical transmission efficiency.
Step S172, the first climbing power is calculated according to formula (3)；
F12=T1* R*U formula (3)；
Wherein, F12For the first climbing power, T1The actual torque of motor during to load, R is motor gear radius, and U is exchange
Tool transmission efficiency.
In the actual torque for calculating motor when obtaining load, and directly obtain motor gear radius and overall mechanical transmission effect
After rate, it can be calculated according to formula (3) and obtain the first climbing power.
In the present embodiment, climbing power when the first climbing power is load of construction elevator.
Step S130, judge whether the difference of the first climbing power and the second climbing power is more than overload climbing power, if so, then prohibiting
The only building hoist work；If it is not, the then building hoist normal work.
First climbing power and the second climbing power are made the difference, actual load climbing power can be obtained, if rising more than overload
Power, then it is assumed that now overload avoids the occurrence of safety problem, it is necessary to forbid building hoist to work.
Above-mentioned building hoist load testing method is converted to M-T rotations by detecting the three-phase phase current of frequency converter
Exciting current, torque current under coordinate system；With reference to the nominal torque meter of exciting current, torque current and construction lifter motor
Calculate actual motor torque；And then can according to overload when motor gear torque calculation building hoist load when first on
Lift and it is unloaded when the second climbing power；Therefore, when the difference of the first climbing power and the second climbing power is more than overload climbing power,
The building hoist is forbidden to work.So as to obtain the load of building hoist, without external weighing sensor, and then
The reliability and interference sex chromosome mosaicism that external weighing sensor is brought can be avoided.
As shown in figure 8, the module map for the frequency converter based on lift.
A kind of frequency converter based on building hoist, including unloaded load recognize module 101, load computing module 102, surpassed
Carry protection module 103 and processing module 104.
Unloaded load identification module 101, the load computing module 102 and the overload protection module 103 connect
Connect the processing module 104.
The unloaded load identification module 101 is used to detect the construction lifting under the building hoist Light Condition
First load of machine.
The load computing module 102 is used to calculate second load of the building hoist in normal operation.
The processing module 104 is used to judge whether the difference of first load and the second load is more than overload and bears
Lotus amount, if so, then the overload protection module 103 forbids the building hoist to work；If it is not, then the building hoist is being just
Often work.
Based on above-mentioned all embodiments, above-mentioned building hoist load testing method can be applied to be based on building hoist
Frequency converter in.
Unloaded load identification module 101 and the load computing module 102 are received by the analog interface of frequency converter
Load cell signal is simultaneously converted to corresponding load.
Specifically, the analog quantity that unloaded load identification module 101 and load computing module 102 are carried by frequency converter connects
The weighing-up wave of mouth (0-10V, 0-20mA, 0-20mV) real-time reception weighing sensor.Then by setting weighing sensor
Maximum range (0-20mV corresponds to 0-2T) carries out linear interpolation, and the weighing-up wave of weighing sensor is changed into real-time load.
Meanwhile, it is capable to shown by the display carried.
When load exceedes the overload load set, frequency converter then carries out fault alarm, and forbids lift to start.
And user can intuitively check fault type by frequency converter display unit, fault location is accurately carried out.
In the present embodiment, the processing module 104 is additionally operable to the first load, the second load overload load pair
The first climbing power, the second climbing power and overload climbing power should be converted to, and judges the difference of the first climbing power and the second climbing power
Whether overload climbing power is more than, if so, then the overload protection module 103 forbids the building hoist to work；If it is not, then institute
State building hoist normal work.
The above-mentioned frequency converter based on building hoist can be recognized module 101 by unloaded load and detect building hoist sky
The first load under load state, load computing module 102 can calculate second load of the building hoist in normal operation
Amount, and whether processing module 104 then judges the building hoist according to the first load, the second load and overload load
Overload.In overload, overload protection module 103 can forbid building hoist to work, and avoid because safety problem occurs in overload.Cause
This, the above-mentioned frequency converter based on building hoist only recognizes module 101 by unloaded load, born without external weighing sensor
The load of building hoist can just be obtained by carrying computing module 102, it is thus possible to which avoid that external weighing sensor brings can
By property and interference sex chromosome mosaicism.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of building hoist load testing method, comprises the following steps：
In building hoist zero load, exciting current, the torque current of frequency converter are obtained；According to exciting current, torque current and
The nominal torque of construction lifter motor, calculate actual torque of the building hoist in zero load；According to building hoist in sky
Actual torque during load calculates the second climbing power during building hoist zero load；
In load of construction elevator, the three-phase phase current of frequency converter is converted to the exciting current under M-T rotating coordinate systems, turned
Square electric current；Building hoist is calculated in load according to the nominal torque of exciting current, torque current and construction lifter motor
Actual torque；The first climbing power when calculating load of construction elevator according to actual torque of the building hoist in load；
Judge whether the difference of the first climbing power and the second climbing power is more than overload climbing power, if so, then forbidding the construction to rise
Drop machine works；If it is not, the then building hoist normal work.
2. building hoist load testing method according to claim 1, it is characterised in that the three-phase by frequency converter
Phase current, which is converted to the step of exciting current under M-T rotating coordinate systems, torque current, to be included：
Phase current sensing electric circuit inspection according to built in frequency converter goes out the biphase current of building hoist, and according to three-phase phase current
Sum of zero obtains third phase electric current, obtains three-phase phase current；
The three-phase phase current of acquisition is converted into electric current under two-phase rest frame by Clarke transformation for mula；
Synchronizing frequency We is integrated to obtain coordinate transform angle；
According to coordinate transform angle, sine value and cosine value are calculated；
Sine value and cosine value are calculated according to coordinate transform angle and correspondingly, the electric current under two-phase rest frame is passed through
Park conversion is converted to exciting current, torque current under M-T rotating coordinate systems.
3. building hoist load testing method according to claim 1, it is characterised in that
It is described to include in building hoist zero load, the step of the exciting current, the torque current that obtain frequency converter：
The running current during building hoist constant-speed operation is taken under building hoist Light Condition；
The exciting current and torque current during zero load are calculated according to principle of vector control and running current.
4. building hoist load testing method according to claim 1, it is characterised in that it is described according to exciting current,
The nominal torque of torque current and construction lifter motor calculates actual torque of the building hoist in zero load or according to excitation
The nominal torque of electric current, torque current and construction lifter motor calculates the step of actual torque of the building hoist in load
Including：
According to formula (1) calculating torque coefficient；
Wherein,For moment coefficient, ItfedFor torque current, ItRefRateFor Rated motor torque current；
Actual motor torque is calculated according to formula (2)；
Wherein, TnFor Rated motor torque, actual torque when T is motor load or is unloaded.
5. building hoist load testing method according to claim 4, it is characterised in that described according to building hoist
Load when actual torque calculate load of construction elevator when the first climbing power the step of include：
According to the torque of motor gear when formula (1) and formula (2) computational load, and obtain motor gear radius and overall mechanical biography
Efficiency of movement；
First climbing power is calculated according to formula (3)；
F12=T1* R*U formula (3)；
Wherein, F12For the first climbing power, T1The actual torque of motor during to load, R are motor gear radius, and U is that overall mechanical passes
Efficiency of movement.
6. building hoist load testing method according to claim 4, it is characterised in that described according to building hoist
The step of the second climbing power when actual torque in zero load calculates building hoist zero load, includes：
The torque of motor gear when calculating unloaded according to formula (1) and formula (2), and obtain motor gear radius and overall mechanical biography
Efficiency of movement；
Second climbing power is calculated according to formula (4)；
F20=T2* R*U formula (4)；
Wherein, F20For the second climbing power, T2For zero load when motor actual torque, R is motor gear radius, and U is that overall mechanical passes
Efficiency of movement.
7. building hoist load testing method according to claim 4, it is characterised in that also include：
The Rated motor torque current is calculated according to formula (5) and obtained；
Wherein, ItRefRateFor Rated motor torque current, IrateFor Rated motor electric current, ImFor exciting current.
8. a kind of frequency converter based on building hoist, it is characterised in that calculate mould including unloaded load identification module, load
Block, overload protection module and processing module；
Unloaded load identification module, the load computing module and the overload protection module are all connected with the processing mould
Block；
The unloaded load identification module is used in the building hoist Light Condition, obtain frequency converter exciting current,
Torque current；According to the nominal torque of exciting current, torque current and construction lifter motor, building hoist is calculated in zero load
When actual torque；The first load of the building hoist is detected according to actual torque of the building hoist in zero load；
The load computing module is used in load of construction elevator, and the three-phase phase current of frequency converter is converted into M-T rotations
Exciting current, torque current under coordinate system；According to the nominal torque meter of exciting current, torque current and construction lifter motor
Calculate actual torque of the building hoist in load；The construction is calculated according to actual torque of the building hoist in load to rise
Second load of the drop machine in normal operation；
The processing module is used to judge whether the difference of first load and the second load to be more than overload load, if
It is that then the overload protection module forbids the building hoist to work；If it is not, the then building hoist normal work.
9. the frequency converter according to claim 8 based on building hoist, it is characterised in that the unloaded load identification mould
Block and the load computing module receive load cell signal by the analog interface of frequency converter and are converted to corresponding
Load.
10. the frequency converter according to claim 8 based on building hoist, it is characterised in that the processing module is also used
In being that the first climbing power, the second climbing power and overload rise by overload load corresponding conversion of the first load, the second load
Power, and judge whether the difference of the first climbing power and the second climbing power is more than overload climbing power, if so, the then overload protection mould
Block forbids the building hoist to work；If it is not, the then building hoist normal work.
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| CN111320082A (en) * | 2019-01-17 | 2020-06-23 | 上海欧冶物流股份有限公司 | Method and device for determining weight of goods and warehouse management method |
| CN112896902A (en) * | 2019-11-19 | 2021-06-04 | 丰豪物流（北京）有限公司 | Daily checking method based on transfer robot, transfer robot and checking system |
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| KR100368774B1 (en) * | 2000-10-25 | 2003-01-24 | 삼성에버랜드 주식회사 | portable diagnosis system for sefety of an elevator and method thereof |
| JP2002154760A (en) * | 2000-11-20 | 2002-05-28 | Toshiba Corp | Overload detecting device for elevator |
| JP5404606B2 (en) * | 2008-03-27 | 2014-02-05 | 三菱電機株式会社 | Elevator control system |
| WO2010103643A1 (en) * | 2009-03-12 | 2010-09-16 | 三菱電機株式会社 | Elevator equipment |
| CN102530674B (en) * | 2011-11-18 | 2014-02-26 | 长沙海川自动化设备有限公司 | Calibration method for overload protector on lifter |
| CN102424322A (en) * | 2011-11-30 | 2012-04-25 | 洛阳源创电气有限公司 | Method for completely unloading mineral aggregates from skip |
| CN103274273B (en) * | 2013-04-10 | 2016-02-24 | 深圳市海浦蒙特科技有限公司 | Elevator overload detection method |
| CN103387165B (en) * | 2013-08-08 | 2016-10-05 | 广州市寰宇电子科技有限公司 | Elevator loading detection method and system |
| CN103482447B (en) * | 2013-09-26 | 2015-12-02 | 苏州汇川技术有限公司 | Construction lifter excess load protection system and method |
-
2015
- 2015-04-21 CN CN201510190642.7A patent/CN104860149B/en active Active
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