CN201923731U - PLC (Programmable Logic Controller)-controlled emergency layer aligning and returning device for elevator - Google Patents
PLC (Programmable Logic Controller)-controlled emergency layer aligning and returning device for elevator Download PDFInfo
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- CN201923731U CN201923731U CN2010206975159U CN201020697515U CN201923731U CN 201923731 U CN201923731 U CN 201923731U CN 2010206975159 U CN2010206975159 U CN 2010206975159U CN 201020697515 U CN201020697515 U CN 201020697515U CN 201923731 U CN201923731 U CN 201923731U
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Abstract
The utility model provides a PLC (Programmable Logic Controller)-controlled emergency layer aligning and returning device for an elevator, consisting of a PLC, a layer aligning area sampling unit, a safety circuit sampling unit, a door lock circuit sampling unit, a PWM (Pulse-Width Modulation) modulation wave generator, a DC (direct current)-AC (alternating current) inverter unit, an accumulator group, a charging/discharging circuit unit, a normal/emergency shifting unit, a power grid sampling unit and a level detecting unit, wherein the PLC is used as a main controller for the device; the PWM modulation wave generator comprises two parts including a single-phase PWM modulation wave generator and a three-phase PWM modulation wave generator; the DC-AC inverter unit comprise two parts including a single-phase inverter circuit and a three-phase inverter circuit; the charging/discharging circuit unit is provided with a charging indicator lamp, a charging stopping indicator lamp, a discharging indicator lamp and a discharging switch; and a running switch is arranged on a starting unit. The PLC-controlled emergency layer aligning and returning device is applied to new elevators and reform control systems of old elevators. By taking the PLC as the control center, the reliability, the safety and the anti-interference capability can be improved, and the producing quantity of printing circuit boards can be reduced.
Description
Technical field
The utility model relates to a kind of elevator control technology field, especially belongs to PLC control elevator emergency and returns leveling device.
Background technology
Since elevator invention, have a power failure cause elevator not the flat bed phenomenon happen occasionally, it is the problem that elevator control is explored that the back car that has a power failure returns leveling device always.At present, return the flat bed mode after known elevator has a power failure and have two kinds: first kind is the on-call maintenance workman, allows service worker at machine room band-type brake be unclamped, and by jigger wheel cage operation is arrived nearest floor level position, service worker is opened layer door and gate with private key then, realizes the rescue purpose; The second way is to utilize micro controller system as control center, adds I/O module, memory module composition microprocessor control system.When having a power failure, microprocessor control system is devoted oneself to work, and the real-time status of car when sampling has a power failure, if car is not or not the flat bed zone, microprocessor control system control PWM inversion module drives towing machine work to the storage battery electric energy by the voltage that the PWM inversion module produces the three-phase alternation, and cage operation is stopped to the flat bed zone, gate and Room door are opened in the operation of control gate machine then, realize the rescue purpose.In first kind of rescue mode, when implementing rescue,, can only rely on maintainer's repeated open layer door to determine the position of car because the position of car can't be monitored in real time, this mode not only efficient is low, and aggravates passenger's panic degree easily.Second kind of rescue mode can realize that outage back car promptly returns the flat bed operation, but need form by micro controller system and the multiple element of peripheral hardware as microprocessor control system, will make printed circuit board (PCB) like this, owing to be subjected to the influence of various factors, the microprocessor control system of producing is time-consuming takes a lot of work, and characteristics such as poor anti jamming capability.
The utility model content
In order to overcome the defective of returning the flat bed scheme after above-mentioned elevator has a power failure, the elevator emergency that the purpose of this utility model provides a kind of PLC control returns leveling device, to solve the deficiency of such scheme.
The technical solution adopted in the utility model is:
Utilize existing ripe PLC product as control center, whole device comprises: PLC, charge/discharge circuit units, battery pack unit, start unit, electrical network sampling unit, level sampling unit, normal/meet an urgent need switch unit, leveling zone sampling unit, safety return circuit sampling unit, loop of the door lock sampling unit, PWM modulation wave generator, AC/DC inversion unit; PLC is as the master controller of device; The PWM modulation wave generator comprises single-phase PWM modulation wave generator and three-phase PWM modulation wave generator two parts; The AC/DC inversion unit comprises single-phase inversion circuit and three-phase inverting circuit two parts; The charge/discharge circuit units is provided with charging indicator light, stops charging indicator light, discharge indicator lamp, discharge switch; Start unit is provided with run switch.
Described PLC and leveling zone sampling unit, safety return circuit sampling unit, loop of the door lock sampling unit, start unit, level detection unit, PWM modulation wave generator link to each other respectively.
Described battery pack unit links to each other respectively with charge/discharge circuit units, start unit, level detection unit, AC/DC inversion unit.
Described start unit and electrical network sampling unit, normal/emergent switch unit, PLC, battery pack unit link to each other respectively.
Described PWM modulation wave generator links to each other respectively with PLC, AC/DC inversion unit.
Described AC/DC inversion unit links to each other respectively with PWM modulation wave generator, battery pack unit.
The beneficial effects of the utility model:
Substitute the microcomputer system effect control center that forms with micro controller system with the PLC matured product, two aspect advantages arranged after the utility model is implemented:
1, avoided because the unreasonable electromagnetic interference of bringing of homemade printed circuit board (PCB) design;
2, reduce the debug process of self-control microcomputer system.
Description of drawings
Fig. 1 is the structural representation that PLC control elevator emergency described in the utility model returns leveling device;
Among the figure: 1-PLC, 2-leveling zone sampling unit, 3-safety return circuit sampling unit, 4-loop of the door lock sampling unit, 5-PWM modulation wave generator, 6-AC/DC inversion unit, 7-battery pack unit, 8-charge/discharge circuit units, 9-be switch unit, 10-electrical network sampling unit, 11-start unit, 12-level detection unit normally/promptly.
Fig. 2 is the structural representation of the utility model charge/discharge circuit units:
Among the figure: 13-charging indicator light, 14-stop charging indicator light, 15-discharge indicator lamp, 16-discharge switch.
Fig. 3 is the structural representation of the utility model start unit:
Among the figure: the 17-run switch.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, PLC described in the utility model control elevator emergency return leveling device overall structure as shown in Figure 1, utilize PLC as controller, whole device comprises PLC1, leveling zone sampling unit 2, safety return circuit sampling unit 3, loop of the door lock sampling unit 4, PWM modulation wave generator 5, AC/DC inversion unit 6, battery pack unit 7, charge/discharge circuit units 8, normal/urgent switch unit 9, electrical network sampling unit 10, start unit 11, level detection unit 12.PLC1 links to each other respectively with leveling zone sampling unit 2, safety return circuit sampling unit 3, loop of the door lock sampling unit 4, start unit 11, level detection unit 12, PWM modulation wave generator 5.
Battery pack unit 7 links to each other respectively with charge/discharge circuit units 8, start unit 11, level detection unit 12, AC/DC inversion unit 6.
Start unit 11 and electrical network sampling unit 10, normal/urgent switch unit 9, PLC1, battery pack unit 7 link to each other respectively.
PWM modulation wave generator 5 links to each other respectively with PLC1, AC/DC inversion unit 6.
AC/DC inversion unit 6 links to each other respectively with PWM modulation wave generator 5, battery pack unit 7.
PWM modulation wave generator 5 comprises PWM modulation wave generator 5 and three-phase PWM modulation wave generator two parts; AC/DC inversion unit 6 comprises single-phase inversion circuit and three-phase inverting circuit two parts; Charge/discharge circuit units 8 is provided with charging indicator light 13, stops charging indicator light 14, discharge indicator lamp 15, discharge switch 16; Start unit 11 is provided with run switch 17.
As shown in Figure 1, be structure principle chart of the present utility model:
Described electrical network sampling unit 10 is monitoring electric network source situation in real time, when collecting grid power blackout or electric network fault signal, to signal of start unit 11 outputs;
When described start unit 11 received the grid power blackout of electrical network sampling unit 11 output or electric network fault signal, start unit 11 controls were normal/emergent switch unit 9, elevator external power grid current supply circuit is disconnected, and switch to battery pack inversion emergency service loop; Start unit 11 is connected the current supply circuit of battery pack unit 7 to PLC1 simultaneously;
Charging to battery pack unit 7 when the electrical network supply regular power in described charge/discharge loop 8, and is provided with battery pack unit 7 discharge loops;
Described battery pack unit 7 when returning the flat bed operation, provides electric energy for PLC1 and AC/DC inversion unit 6 emergent;
Described leveling zone sampling unit 2 is when grid power blackout or electric network fault, and whether the position data of gathering car provide car or not the signal in flat bed zone to PLC1;
Described safety return circuit sampling unit 3 is gathered the elevator safety loop data when grid power blackout or electric network fault, offer PLC1;
Described loop of the door lock sampling unit 4 is when grid power blackout or electric network fault.Gather the door lock of elevator loop data, offer PLC1;
Described level detection unit 12 sampling battery pack unit 7 voltage signals judge that whether voltage is normal, offers PLC1;
Described PLC1 connects the current supply circuit that battery pack unit 7 are switched to PLC1 by start unit 11 when grid power blackout or electric network fault, the PLC1 work that puts into operation.PLC1 is incoming level detecting unit 12 signals at first, judge thus whether the magnitude of voltage of battery pack is normal, thereby whether decision drops into emergency operating.The safety signal of PLC1 sampling safety return circuit sampling unit 3 judge thus whether the safety return circuit of elevator is communicated with, thereby whether decision drops into emergency operating.PLC1 sampling leveling zone sampling unit 2 signals judge that thus car is in the position of hoistway, if car is in the flat bed zone, and out gate machine required voltage grade, gate and Room door are opened in the work of driving gate machine; If car is not in the leveling zone position, PLC1 control three-phase alternating current inverter voltage drives towing machine work, when meeting the leveling zone signal, is disconnected to the three-phase alternating current inverter voltage of towing machine, and the required voltage of output driving gate machine is opened gate and Room door.Described PWM modulation wave generator 5 is divided into two kinds of single-phase PWM modulating wave and three-phase PWM modulating waves, drives single phase A.C. inverter circuit and three-phase alternating current inverter circuit respectively.Described AC/DC inversion unit is divided into two kinds of single phase A.C. inverter circuit and three-phase alternating current inverter circuits, and drive signal is produced by PWM modulation wave generator 5.
As shown in Figure 2, be the structure principle chart of the utility model charge/discharge circuit units 8:
Described charging indicator light 13, when battery cell 7 was charged, this indicator lamp was bright;
The described charging indicator light 14 that stops, when stopping battery cell 7 and charge, this indicator lamp is bright.
Described discharge indicator lamp 14, when stopping battery cell 7 and discharge, this indicator lamp is bright.
Described discharge switch 16 when needs discharge to battery pack unit 7, is in this switch and is communicated with the position.
As shown in Figure 3, be the structure principle chart of the utility model start unit:
Described run switch 17, when this switch was in the ON position, the utility model just can put into operation when grid power blackout or electric network fault.When being in the OFF position, the utility model does not put into operation when electric grid power blackout or electric network fault.
It is emphasized that the utility model is not limited to the described embodiment of present embodiment, every this area person skilled belongs to scope of the present utility model equally according to other embodiment that the technical solution of the utility model draws.
Claims (5)
1. a PLC control elevator emergency returns leveling device, it is characterized in that: as controller, whole device comprises PLC (1), leveling zone sampling unit (2), safety return circuit sampling unit (3), loop of the door lock sampling unit (4), PWM modulation wave generator (5), AC/DC inversion unit (6), battery pack unit (7), charge/discharge circuit units (8), normal/urgent switch unit (9), electrical network sampling unit (10), start unit (11), level detection unit (12) with PLC; PLC (1) links to each other respectively with leveling zone sampling unit (2), safety return circuit sampling unit (3), loop of the door lock sampling unit (4), start unit (11), level detection unit (12), PWM modulation wave generator (5); Battery pack unit (7) links to each other respectively with charge/discharge circuit units (8), start unit (11), level detection unit (12), AC/DC inversion unit (6); Start unit (11) and electrical network sampling unit (10), normal/urgent switch unit (9), PLC (1), battery pack unit (7) link to each other respectively; PWM modulation wave generator (5) links to each other respectively with P LC (1), AC/DC inversion unit (6); AC/DC inversion unit (6) links to each other respectively with PWM modulation wave generator (5), battery pack unit (7).
2. PLC control elevator emergency according to claim 1 returns leveling device, and it is characterized in that: PWM modulation wave generator (5) comprises PWM modulation wave generator (5) and three-phase PWM modulation wave generator two parts.
3. PLC control elevator emergency according to claim 1 returns leveling device, and it is characterized in that: AC/DC inversion unit (6) comprises single-phase inversion circuit and three-phase inverting circuit two parts.
4. PLC according to claim 1 control elevator emergency returns leveling device, it is characterized in that: charge/discharge circuit units (8) is provided with charging indicator light (13), stops charging indicator light (14), discharge indicator lamp (15), discharge switch (16).
5. PLC control elevator emergency according to claim 1 returns leveling device, and it is characterized in that: start unit (11) is provided with run switch (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206975159U CN201923731U (en) | 2010-12-30 | 2010-12-30 | PLC (Programmable Logic Controller)-controlled emergency layer aligning and returning device for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206975159U CN201923731U (en) | 2010-12-30 | 2010-12-30 | PLC (Programmable Logic Controller)-controlled emergency layer aligning and returning device for elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201923731U true CN201923731U (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206975159U Expired - Fee Related CN201923731U (en) | 2010-12-30 | 2010-12-30 | PLC (Programmable Logic Controller)-controlled emergency layer aligning and returning device for elevator |
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| CN (1) | CN201923731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482437A (en) * | 2013-10-21 | 2014-01-01 | 济南微控科技发展有限公司 | Micro-control leveling controller for construction elevator |
-
2010
- 2010-12-30 CN CN2010206975159U patent/CN201923731U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482437A (en) * | 2013-10-21 | 2014-01-01 | 济南微控科技发展有限公司 | Micro-control leveling controller for construction elevator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20161230 |