CN102351121B - Elevator emergency evacuation device and an elevator emergency evacuation method - Google Patents
Elevator emergency evacuation device and an elevator emergency evacuation method Download PDFInfo
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- CN102351121B CN102351121B CN 201110292133 CN201110292133A CN102351121B CN 102351121 B CN102351121 B CN 102351121B CN 201110292133 CN201110292133 CN 201110292133 CN 201110292133 A CN201110292133 A CN 201110292133A CN 102351121 B CN102351121 B CN 102351121B
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Abstract
The invention relates to an elevator emergency evacuation device and a corresponding elevator emergency evacuation method, which are applied in the field of elevator control. The elevator emergency evacuation device comprises a motor (11), a rectifier (31), an inverter (32) connected with the rectifier (31), a pulse width modulation circuit (34) for transmitting a control signal to the inverter (32), a central processor (371) and a data storage (372) and is characterized by also comprising a speed displacement feedback circuit (22), a current detection circuit (33) and a voltage detection circuit (40), wherein the speed displacement feedback circuit (22) is used for detecting the operating direction of the motor (11); an input end of the current detection circuit (33) is connected with a current output end of the inverter (32); an output end of the current detection circuit (33) is connected with an input end of the central processor (371); the voltage detection circuit (40) is used for detecting a voltage of the inverter (32); and an output end of the voltage detection circuit (40) is connected to the central processor (371). Relative to the prior art, the operating efficiency and the safety can be improved, so that the load of a backup power is further reduced and the cost of an elevator system is further reduced.
Description
Technical field
The present invention relates to a kind of elevator emergency detrainment device and corresponding elevator emergency evacuation method, belong to elevator control field.
Background technology
If emergency condition takes place during the elevator operation, need carry out emergency evacuation operation, back-up source place in operation at this moment is for elevator normally reaches the flat bed state under emergency rating, need carry out the judgement of emergency evacuation service direction, be exactly in fact the judgement of elevator load direction.If can correctly judge the load direction of elevator, then system makes the motor that drags the elevator operation along the operation of elevator load direction, evacuates thereby reach the flat bed state.If the direction error in judgement will cause the back-up source emergency protection, influence the recovery of the normal condition of elevator.This shows that in elevator emergency evacuation process, it is extremely important that elevator emergency is evacuated the direction judgement of elevator load direction just, it is the prerequisite that can elevator safe operation reach the flat bed state.
Existing emergency evacuation service direction determination methods has two kinds: one freely slips the mode of car by elevator and obtains elevator emergency and evacuate direction for adopt decontroling band-type brake, specifically the visible patent of invention institute elaboration method that is called " self-adaptive control method of elevator emergency operation " for No. 201010107593.3; But the method is from decontroling band-type brake to learning that the emergent direction of operation will be through 2 ~ 3 seconds time, and in this time, the elevator variable frequency device is the operation of motor not to be controlled, and can occur situations such as motor stall like this, causes potential safety hazard.Two install the switch of weighing for elevator, and this switch of weighing is judged the direction of elevator load by the weight of measuring car and counterweight, and apparatus for controlling elevator learns that this direction rear drive elevator moves towards respective direction, carries out emergency evacuation.But; the use switch of weighing is judged the direction of elevator load; increase the cost that the switch of weighing has increased elevator device on the one hand; there is the risk that lost efficacy in the switch of weighing on the other hand; switch lost efficacy and will cause the emergency evacuation anisotropy if weigh; start the back-up source protection, elevator can't carry out emergency evacuation.
Summary of the invention
Have problems for solving in the prior art, the invention provides a kind of new elevator emergency detrainment device and the method for corresponding elevator emergency evacuation, its main principle is to utilize the size of DC bus-bar voltage and current of electric to judge size and the direction of Motor torque, thereby judge the elevator load direction, and this direction information is stored in the memory device so that elevator is called when emergency rating occurring, drive motor moves towards load direction, make machine operation at brake running state, effectively carry out elevator emergency and evacuate.Technical scheme of the present invention is as follows:
A kind of elevator emergency detrainment device, comprise motor 11 and rectifier 31 and the inverter 32 that links to each other with rectifier 31, and central process unit 371 and data memory 372, it is characterized in that: also comprise, one speed displacement reactive circuit 22, the service direction by detecting described motor 11 also feeds back to described central process unit 371; One current detection circuit 33, the input end of described current detection circuit 33 links to each other with the current output terminal of described inverter 32, and the mouth of described current detection circuit 33 links to each other with the input end of described central process unit 371; One voltage detecting circuit 40, for detection of the voltage of inverter 32, the mouth of described voltage detecting circuit 40 is connected to central process unit 371.
Further, described speed displacement reactive circuit 22 comprises sensor 12 and A/D converter 21.
Further, also comprise cond 38, described voltage detecting circuit 40 is connected the two poles of the earth of described cond 38 to detect the DC bus-bar voltage of two interpolars.
The invention still further relates to a kind of elevator emergency evacuation method, be each described elevator emergency detrainment device of claim 1-3, it is characterized in that:
When elevator normally moves, utilize described speed displacement reactive circuit 22 to detect the service direction of described motor 11, utilize described current detection circuit 33 to detect the current value of described motor 11, utilize described voltage detecting circuit 40 to detect the magnitude of voltage of described inverter 32;
Described central process unit 371 is judged the direction and size and definite elevator load direction of described motor 11 moments, and this information is stored in the described data memory 372;
When emergency rating appearred in elevator, described central process unit 371 was directly transferred the elevator load direction of storage in the described data memory 372, to drive described motor 11 operations.
Further, described voltage detecting circuit 40 detects the DC bus-bar voltage of 38 liang of interpolars of described cond and sends described central process unit 371 to, and central process unit 371 is judged the direction of Motor torque according to the size of this DC bus-bar voltage.
Further, in normal range, not in normal range, central process unit 371 sends instruction to the DC bus-bar voltage that described central process unit 371 is judged 38 liang of interpolars of described cond as magnitude of voltage, the halt system operation.
This invention can improve the efficient of operation and improve safety with respect to background technology one (adopt to decontrol band-type brake and freely slip the mode of car by elevator and obtain elevator emergency evacuation direction, see 201010107593 elaboration methods).With respect to background technology two, reduce the cost of elevator device, further improved safety, also reduced the load of back-up source simultaneously.
Description of drawings
Fig. 1 is electrical block diagram of the present invention.
Shown in the figure: 11: motor; 12: sensor; The 21:A/D conv; 22: the speed displacement reactive circuit; 23: motor control unit; 31: rectifier; 32: inverter; 33: current detection circuit; 34: pulse-width modulation circuit; 37: central processing unit; 38: cond; 371: central process unit; 372: data memory.
The specific embodiment
The applicant describes the specific embodiment of the present invention in detail according to Figure of description.The following stated specific embodiment is preferred implementation, can not think the restriction to other embodiments of technical solution of the present invention.
According to shown in Figure 1, the present invention includes following major part:
Motor 11 is used for driving elevator and moves up and down, and it can be induction motor (IM) or permagnetic synchronous motor (PM).
Speed displacement reactive circuit 22 is for judging the elevator service direction and the running condition of elevator being monitored.Speed displacement reactive circuit 22 comprises sensor 12 and A/D converter 21, wherein, sensor 12 detects speed, the displacement signal of motor 11 and sends A/D converter 21 to, convert digital signal to through A/D converter 21 and send central process unit 371 to, during specific implementation, sensor 12 can be sine and cosine encoder, the rotary encoder of analog quantity.
Current detection circuit 33: flow out and flow through three plase alternating current U, the V of motor 11, the size of current of W for detection of inverter 32 mouths, thereby judge the size of motor 11 moments of torsion.
According to circuit structure shown in Figure 1, the technical program mode of operation is described below: the enforcement of the technical program focuses on the judgement to the elevator load direction, the just size of the moment of torsion of motor 11 and direction, wherein there is following step very crucial: at first, utilize speed displacement reactive circuit 22 to detect the service direction of motor, the just service direction of elevator; Secondly, utilize current detection circuit 33 to detect inverter 32 output end current sizes, and information passed to central process unit 371, the size of electric current and the corresponding relation of moment of torsion are: the size of Motor torque=(outgoing current ÷ main frame rated current) * main frame nominal torque, and central process unit 371 can calculate the size of Motor torque accordingly according to the size of electric current; They are three years old, utilize voltage detecting circuit 40 to detect the DC bus-bar voltage at cond 38 two ends, central process unit 371 is judged the direction of motor 11 moments of torsion according to the size of voltage detecting circuit 40 detected magnitudes of voltage, physical relationship is for being higher than setting value 560V as if d-c bus voltage value, show that then machine operation is in braking mode, the direction of Motor torque is opposite with the service direction of motor, if d-c bus voltage value is less than or equal to setting value 560V, then machine operation is at motoring condition, and the Motor torque direction is identical with the service direction of motor.Thus, system just can calculate size and the direction of the moment of torsion of motor 11, the just load direction of elevator.
In specific words, when elevator was worked at every turn, rectifier 31 was responsible for three plase alternating current R, S, T are transformed into direct current (DC), used for inverter 32; Direct current (DC) after 38 pairs of conversion of cond carries out filtering to be handled, voltage detecting circuit 40 detects cond 38 two ends DC bus-bar voltage in real time, and this information of voltage passed to central process unit 371, central process unit 371 judges that magnitude of voltage is whether in range of receiving, as not stopping total system work in scope.If in normal range, permit next step action.
Current detection circuit 33 detects the size of current that inverter 32 inputs to motor 11, and information is passed to central process unit 371, thereby central process unit 371 is judged the size of Motor torque according to the current information of U, V, W.As previously mentioned, judge the direction of motor 11 moments of torsion according to voltage detecting circuit 40.Central process unit 371 is determined the elevator load direction after judging the size of Motor torque and direction, just the elevator emergency direction of evacuating.This load information be stored in data memory 372 thereafter.When having a power failure, system utilizes the back-up source power supply, and central process unit 371 directly calls the load direction information that is stored in the data memory 372, obtains correct elevator emergency and evacuates direction, in time carries out the emergency evacuation of elevator.
As mentioned above, when elevator normally moves, system utilizes described speed displacement reactive circuit 22 that the speed displacement signal of motor 11 is in time fed back to central process unit 371, utilize described current detection circuit 33 to detect the current signal of motor 11 and send central process unit 371 to, utilize voltage detecting circuit 40 to detect the DC bus-bar voltage at cond 38 two ends and send central process unit 371 to, utilize described central process unit 371 to judge the direction and size and definite elevator load direction of motor 11 moments of torsion, and this information is stored in data memory 372; When emergency rating appearred in elevator, back-up source dropped into, and central process unit 371 is directly transferred the elevator load direction in the data memory 372, judged the emergency evacuation direction, drive motor 11 operations.
To sum up; the applicant has elaborated a kind of elevator emergency detrainment device of the present invention and has carried out the method that elevator emergency is evacuated according to this device; the applicant has done detailed elaboration at the preferred embodiments of the present invention; but can not be interpreted as the restriction to other embodiments of the present invention; everyly on basis of the present invention, further improve and similar or identical scheme, all be considered as the scope that the present invention asks for protection.
Claims (6)
1. elevator emergency detrainment device, comprise motor (11), rectifier (31), the inverter (32) that links to each other with rectifier (31), and central process unit (371) and data memory (372), it is characterized in that: also comprise, one speed displacement reactive circuit (22), the service direction by detecting described motor (11) also feeds back to described central process unit (371); One current detection circuit (33), the input end of described current detection circuit (33) links to each other with the current output terminal of described inverter (32), and the mouth of described current detection circuit (33) links to each other with the input end of described central process unit (371); One voltage detecting circuit (40), for detection of the voltage of inverter (32), the mouth of described voltage detecting circuit (40) is connected to central process unit (371).
2. elevator emergency detrainment device according to claim 1, it is characterized in that: described speed displacement reactive circuit (22) comprises sensor (12) and A/D converter (21).
3. elevator emergency detrainment device according to claim 1, it is characterized in that: also comprise cond (38), described voltage detecting circuit (40) is connected the two poles of the earth of described cond (38) to detect the DC bus-bar voltage of two interpolars.
4. elevator emergency evacuation method, right to use requires each described elevator emergency detrainment device of 1-3, it is characterized in that:
When elevator normally moves, utilize described speed displacement reactive circuit (22) to detect the service direction of described motor (11), utilize described current detection circuit (33) to detect the current value of described motor (11), utilize described voltage detecting circuit (40) to detect the magnitude of voltage of described inverter (32);
Described central process unit (371) is judged the direction and size and definite elevator load direction of described motor (11) moment, and this information is stored in the described data memory (372);
When emergency rating appearred in elevator, described central process unit (371) was directly transferred the elevator load direction of storage in the described data memory (372), to drive described motor (11) operation.
5. elevator emergency evacuation method according to claim 4, it is characterized in that: described voltage detecting circuit (40) detects the DC bus-bar voltage of cond (38) two interpolars and sends described central process unit (371) to, and central process unit (371) is judged the direction of Motor torque according to the size of this DC bus-bar voltage.
6. elevator emergency evacuation method according to claim 5, it is characterized in that: described central process unit (371) judges that the DC bus-bar voltage of described cond (38) two interpolars is whether in normal range, as magnitude of voltage not in normal range, central process unit (371) sends instruction, the halt system operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110292133 CN102351121B (en) | 2011-10-01 | 2011-10-01 | Elevator emergency evacuation device and an elevator emergency evacuation method |
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| CN 201110292133 CN102351121B (en) | 2011-10-01 | 2011-10-01 | Elevator emergency evacuation device and an elevator emergency evacuation method |
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| CN102351121A CN102351121A (en) | 2012-02-15 |
| CN102351121B true CN102351121B (en) | 2013-09-25 |
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| EP2865629B1 (en) * | 2013-10-24 | 2016-11-30 | Kone Corporation | Stall condition detection |
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| JPH022753A (en) * | 1988-06-15 | 1990-01-08 | Nec Corp | General data switching system |
| JPH092753A (en) * | 1995-06-21 | 1997-01-07 | Hitachi Ltd | Elevator control device |
| KR100186370B1 (en) * | 1996-10-24 | 1999-04-15 | 이종수 | Emergency drive equipment of an elevator during power failure |
| KR100202709B1 (en) * | 1996-11-04 | 1999-06-15 | 이종수 | Apparatus and its method of driving elevator on power down |
| KR100303011B1 (en) * | 1998-12-12 | 2002-05-09 | 장병우 | Operation control apparatus for elevator |
| CN100560462C (en) * | 2007-06-01 | 2009-11-18 | 苏州江南嘉捷电梯股份有限公司 | The power failure rescue mode of synchronous machine drives elevator |
| CN201530647U (en) * | 2009-10-20 | 2010-07-21 | 西子奥的斯电梯有限公司 | Elevator emergency evacuation device |
| CN201817159U (en) * | 2010-08-13 | 2011-05-04 | 杭州优迈科技有限公司 | Elevator emergency evacuation device |
| CN202296654U (en) * | 2011-10-01 | 2012-07-04 | 西子联合控股有限公司 | Emergency evacuation device of elevator |
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Effective date of registration: 20210427 Address after: Room 305-w, 3rd floor, No.11 Lane 1888, Caoyang Road, Putuo District, Shanghai 200333 Patentee after: Xin Xi'ao Elevator Group Co.,Ltd. Address before: Jianggan District Qingchun Road Hangzhou city Zhejiang province 310016 No. 1-1 Patentee before: XIZI UNITED HOLDING Corp. |
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Effective date of registration: 20211125 Address after: 314000 Room 301, building 9, No. 1332, Wanguo Road, Jiaxing Economic and Technological Development Zone, Zhejiang Province Patentee after: Zhejiang Sujie Elevator Co.,Ltd. Address before: Room 305-w, 3rd floor, No.11 Lane 1888, Caoyang Road, Putuo District, Shanghai 200333 Patentee before: Xin Xi'ao Elevator Group Co.,Ltd. |