CN109534111A - A kind of elevator safety control system and method - Google Patents

A kind of elevator safety control system and method Download PDF

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Publication number
CN109534111A
CN109534111A CN201811385713.9A CN201811385713A CN109534111A CN 109534111 A CN109534111 A CN 109534111A CN 201811385713 A CN201811385713 A CN 201811385713A CN 109534111 A CN109534111 A CN 109534111A
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China
Prior art keywords
control
module
signal
elevator
submodule
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CN201811385713.9A
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CN109534111B (en
Inventor
肖中良
陈晓东
唐其伟
仲兆峰
张仕昭
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Hitachi Building Technology Guangzhou Co Ltd
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Hitachi Building Technology Guangzhou Co Ltd
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Priority to CN201811385713.9A priority Critical patent/CN109534111B/en
Priority claimed from CN201811385713.9A external-priority patent/CN109534111B/en
Publication of CN109534111A publication Critical patent/CN109534111A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00Control systems of elevators in general
    • B66B1/02Control systems without regulation, i.e. without retroactive action
    • B66B1/06Control systems without regulation, i.e. without retroactive action electric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators

Abstract

The invention discloses a kind of elevator safety control system and methods, are related to elevator technology field, the system, comprising: safety signal acquisition module, safety governor module and brake circuit control module;Wherein, the first end of safety governor module is connect with safety signal acquisition module, and the second end of safety governor module is connect with brake circuit control module;Safety governor module generates enable signal for the safety signal according to the output of safety signal acquisition module, and enable signal is transferred to brake circuit control module;Brake circuit control module, for generating electric current according to enable signal, so that elevator brake is in releasing orientation, and, when detecting short trouble to safety governor module feedback fault-signal, to trigger the output that safety governor module stops enable signal, so that elevator brake is in release conditions.The present invention, which realizes, realizes elevator operation no contact action noise, improves boarding experience.

Description

A kind of elevator safety control system and method
Technical field
The present embodiments relate to elevator technology field more particularly to a kind of elevator safety control systems and method.
Background technique
In general, elevator regular calling or urgent stop are realized by disconnecting motor and brake circuit.Specifically, disconnected Open motor power supply or revocation drive waveforms then motor shut down, breakaway braking device loop power supply, braking function is activated, also That is, electromagnetic force disappears when brake circuit power-off, brake rubber block component compresses rapidly braking table under the action of spring force pressure Face forms brake, so that motor keeps on-position.It can be seen that motor, which shuts down, closes common ensure with brake The stop safety of elevator.
Currently, the power supply of cutting motor and brake circuit is completed mainly by contactor.Specifically, contacts of contactor is connected In motor and brake current supply circuit, contactor coil is series between elevator safety loop and elevator master control system.It is no matter electric Terraced safety return circuit disconnects or elevator master control system disconnects, and will lead to contactor coil power loss, and contacts of contactor disconnects, makes Obtain motor and brake circuit power loss.But the frequent on-off of contactor can generate action noise, boarding experience be reduced, such as in nothing Machine room elevator and villa ladder application, action noise caused by the frequent on-off of contactor will affect boarding user, or even meeting Bother elevator periphery resident.
Summary of the invention
In view of this, the present invention provides a kind of elevator safety control system and method, to realize that elevator runs no contact Action noise improves boarding experience.
In a first aspect, the embodiment of the invention provides a kind of elevator safety control systems, comprising: safety signal acquires mould Block, safety governor module and brake circuit control module;
Wherein, the first end of the safety governor module is connect with the safety signal acquisition module, and the safety The second end of controller module is connect with the brake circuit control module;
The safety governor module, the safety signal for exporting according to the safety signal acquisition module, generation make Energy signal, and the enable signal is transferred to the brake circuit control module;
The brake circuit control module, for generating electric current according to the enable signal, so that elevator brake is in Releasing orientation;And when detecting short trouble to the safety governor module feedback fault-signal, to trigger the peace Full controller module stops the output of the enable signal, so that the elevator brake is in release conditions.
Optionally, elevator safety control system further include: electric motor loop control module and elevator host module;
One end of the electric motor loop control module is connect with the safety governor module, and the electric motor loop controls mould The other end of block is connect with the elevator host module;
The electric motor loop control module, the motor control signal for being exported according to the safety governor module, to Elevator host module output pulse width modulated signal, to control the motor operating of the elevator host module;
The safety governor module is also used to close the output of the motor control signal according to the fault-signal, To trigger the output that the electric motor loop control module stops the pulse-width signal.
Optionally, elevator safety control system further include: elevator main control module.Wherein, the electric motor loop control module Including driving chip submodule and inversion submodule;The first end of the driving chip submodule and the safety governor module Relay connection, the second end of the driving chip submodule is connect with the inversion submodule and the driving chip The third end of submodule is connect with the elevator main control module;
The relay, for the motor control signal to be transferred to the driving chip submodule;
The driving chip submodule, for the electricity according to the motor control signal and elevator main control module output Machine driving signal, the driving control signal of Xiang Suoshu inversion submodule output;
The inversion submodule, for being exported according to the motor of the driving control signal, Xiang Suoshu elevator host module Pulse-width signal.
Optionally, the brake circuit control module includes: band-type brake power supply submodule and band-type brake control submodule.
Wherein, the second end of the safety governor module is connect with the brake circuit control module, comprising: the peace The second end of full controller module is separately connected the first input end and band-type brake control submodule of the band-type brake power supply submodule The first input end of block;
First output end of the band-type brake power supply submodule is connect with the second input terminal of the band-type brake control submodule, institute The first output end for stating band-type brake control submodule is connect with the elevator brake of the elevator host module;
The band-type brake power supply submodule, the enable signal for exporting according to the safety governor module are embraced to be described The power supply of lock control submodule;
The band-type brake control submodule, the enable signal for exporting according to the safety governor module generate electric current.
Optionally, the band-type brake power supply submodule includes: switch transformer unit and power driving circuit;
One end of the power driving circuit is connect with the second end of the safety governor module, the power drives electricity The other end on road is connect with the switch transformer unit, the output end of the switch transformer unit and band-type brake control Module connection;
The power driving circuit, for being driven according to the enable signal to the switch transformer unit out-put supply Signal, to drive the switch transformer unit for band-type brake control submodule power supply.
Optionally, the fault-signal includes power failure signal, the band-type brake power supply submodule further include: power supply short circuit Detection unit and rectification filtering unit;
One end of the power supply short circuit detection unit connects the rectification filtering unit and the switch transformer unit, institute The other end for stating power supply short circuit detection unit connects the 4th end of the safety governor module;
The power supply short circuit detection unit, for generating power failure signal when detecting short trouble, and by the electricity Source fault-signal feeds back to the safety governor module.
Optionally, the band-type brake control submodule includes: control driving unit and switch pipe unit;
One end of the control driving unit is connect with the second end of the safety governor module, and the control driving is single The other end of member is connect with the control terminal of the switch pipe unit;
The first end of the switch pipe unit is connect with the first output end of the band-type brake power supply submodule, the switching tube The second end of unit is connect with the elevator brake;
The control driving unit, for exporting control to the control terminal of the switch pipe unit according to the enable signal Driving signal, to control the working condition of the switch pipe unit.
Optionally, the fault-signal includes: control fault-signal, the band-type brake control submodule further include: band-type brake control Short detection unit processed;
The first end of the band-type brake control short detection unit is connect with the first end of the switch pipe unit, the band-type brake The second end for controlling short detection unit is connect with the second end of the switch pipe unit;
The band-type brake controls short detection unit, for generating control failure when detecting the switch pipe unit short circuit Signal, and the control fault-signal is fed back into safety governor module.
Optionally, the band-type brake control submodule further include: the continuous current circuit unit;
One end of the continuous current circuit unit connect the elevator brake first end and the switch pipe unit the Two ends, the other end of the continuous current circuit unit connect the elevator brake second end and the band-type brake power supply submodule First output end;
The continuous current circuit unit, for discharging the electric current of the elevator brake in switch pipe unit shutdown.
Second aspect, the embodiment of the invention also provides a kind of elevator security control methods, this method comprises:
According to the safety signal of safety signal acquisition module output, triggering safety governor module generates enable signal;
According to the enable signal, brake circuit control module is triggered to elevator brake and exports electric current, so that the electricity Terraced brake is in releasing orientation;
When detecting short trouble to safety governor module feedback fault-signal, to trigger the safety governor mould Block stops exporting the enable signal to the brake circuit control module, so that the elevator brake is in release conditions.
Optionally, this method further include: according to the motor control signal of safety governor module output, to elevator master Machine module output pulse width modulated signal, to control the motor operating of the elevator host module.
Optionally, when detecting short trouble, the method also includes: the motor is closed according to the fault-signal The output of signal is controlled, to trigger the output that the electric motor loop control module stops the pulse-width signal.
The enable signal that the embodiment of the present invention is generated based on safety governor module realizes the control to elevator brake, To solve the problems, such as the band-type brake contactor and the frequent on-off generation noise of elevator operation contactor in existing elevator, electricity is realized Ladder operation no contact action noise, improves boarding experience.
In addition, the embodiment of the present invention can cancel band-type brake contactor and operation contactor in existing elevator device, thus Contactor failure caused by contacts of contactor can be cut off to avoid frequent high current, can such as avoid contact with device contact adhesion, And then elevator faults caused by device failure can be avoided contact with, elevator safety is improved, guarantees the safe handling of elevator.
Detailed description of the invention
Fig. 1 is a kind of structural block diagram of elevator safety control system of the embodiment of the present invention;
Fig. 2 is the structural block diagram of an one of alternative embodiment of the invention elevator safety control system;
Fig. 3 is the structural block diagram of another elevator safety control system in an alternative embodiment of the invention;
Fig. 4 is the structural block diagram of another elevator safety control system in an alternative embodiment of the invention;
Fig. 5 is the structural schematic diagram figure of an one of alternative embodiment of the invention elevator safety control system;
Fig. 6 is the step flow chart of one of embodiment of the present invention elevator security control method.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Referring to Fig.1, a kind of structural block diagram of elevator safety control system of the embodiment of the present invention is shown.The elevator safety Control system may include: safety signal acquisition module 110, safety governor module 120 and brake circuit control module 130. Wherein, the first end of the safety governor module 120 is connect with the safety signal acquisition module 110, and the safety control The second end of device module 120 processed is connect with the brake circuit control module 130.
In the concrete realization, the safety governor module 120, for defeated according to the safety signal acquisition module 110 Safety signal out generates enable signal EN, and the enable signal EN is transferred to the brake circuit control module 130. The brake circuit control module 130 is unclamped for generating electric current according to the enable signal EN so that elevator brake is in State;And fault-signal FB is fed back to the safety governor module 120 when detecting short trouble, described in triggering Safety governor module 120 stops the output of the enable signal EN, so that the elevator brake is in release conditions.
Specifically, safety governor module 120 is in the safety signal for receiving safety signal acquisition module 110 and being exported Afterwards, it can determine that elevator is normal based on the safety signal, that is, determine that elevator can be used normally, it is in a safe condition, and can be with Enable signal EN is generated based on the safety signal, and enable signal EN is transferred to brake circuit control module 130, so that Brake circuit control module 130 can generate the electric current of brake circuit according to enable signal EN, so that elevator brake is opened Lock is in releasing orientation, so that elevator motor can operate, guarantees that elevator operates normally.When brake circuit control module 130 when detecting short trouble, and the corresponding fault-signal FB of the short trouble can be fed back to safety governor module 120, from And the output that safety governor module closes enable signal EN can be triggered by fault-signal FB, it is returned with breakaway braking device Road, so that brake circuit control module 130 stops generating the electric current exported to elevator brake, i.e. elevator brake power-off, pass Lock realizes elevator emergency brake, elevator is forbidden to restart into release conditions.
To sum up, elevator safety control system provided in an embodiment of the present invention is based on the control generation of safety governor module 120 Enable signal realize the control to elevator brake, to solve band-type brake contactor in existing elevator and elevator operation The frequent on-off of contactor leads to the problem of noise, realizes that elevator runs no contact action noise, improves boarding experience.
Furthermore, using the elevator safety control system of the embodiment of the present invention, can cancel in existing elevator device Band-type brake contactor and operation contactor, so as to avoiding contactor caused by frequent high current cutting contacts of contactor therefore Barrier, can such as avoid contact with device contact adhesion, and then can avoid contact with elevator faults caused by device failure, improve elevator safety Property, guarantee the safe handling of elevator.
On the basis of the above embodiments, optionally, as shown in Fig. 2, elevator safety control system can also include: motor Circuit control module 210 and elevator host module 220.One end of the electric motor loop control module 210 and the security control Device module 120 connects, and the other end of the electric motor loop control module 210 is connect with the elevator host module 220.The motor Circuit control module 210, the motor control signal for being exported according to the safety governor module 120, to elevator host mould 220 output pulse width modulated signal of block, to control the motor operating of the elevator host module 220.Safety governor module 120, It is also used to close the output of the motor control signal according to the fault-signal, to trigger the electric motor loop control module 210 stop the output of the pulse-width signal.
In the concrete realization, elevator host module 220 may include elevator brake and motor this two parts.Security control Device module can generate electricity based on the safety signal after detecting the safety signal that safety signal acquisition module 110 is exported Machine control signal and enable signal EN, and the motor control signal can be transferred to electric motor loop control module 210, so that motor Circuit control module 210 can be according to motor control signal to 220 output pulse width modulated signal of elevator host module, to control The motor operating for stating elevator host module 220, realizes elevator acceleration and deceleration;Meanwhile enable signal EN can be transferred to and be braked back Road control module 130 generates electric current to trigger brake circuit control module 130 according to enable signal EN, so that elevator brake Device is in releasing orientation, so that motor can run well, guarantees the normal operation of elevator.Brake circuit control module 130 when detecting short trouble, the failure that safety governor module 120 can be fed back according to the brake circuit control module 130 Signal stops the output of enable signal, with breakaway braking device circuit, so that being in release conditions, and can close motor control The output of signal cancels motor output torque so that electric motor loop control module 210 stops the output of pulse-width signal, So that motor is out of service, elevator emergency brake is realized.
In an alternate embodiment of the present invention where, as shown in figure 3, elevator safety control system can also include elevator master Control module 310.The elevator main control module 310 can be connect by communication bus with safety governor module 120, can be by the peace The historical failure information for the safety switch that full controller module 120 records is transferred to elevator service center, so that in elevator service The heart can remotely read the historical failure information of safety switch, and the damage feelings of safety switch are accurately positioned convenient for engineering maintenance staff Condition and fault condition.
As shown in figure 4, electric motor loop control module 210 may include driving chip submodule 211 and inversion submodule 212.Wherein, the first end of the driving chip submodule 211 is connect with the relay of the safety governor module 120, institute The second end for stating driving chip submodule 211 is connect with the inversion submodule 212 and the driving chip submodule 211 Third end connect with the elevator main control module 310.
In the present embodiment, the relay, for the motor control signal to be transferred to the driving chip submodule Block.The driving chip submodule 211, for what is exported according to the motor control signal and the elevator main control module 310 Motor drive signal, the driving control signal that Xiang Suoshu inversion submodule 212 exports.Specifically, in relay closure, safety The motor control signal that controller module 120 exports can be transferred to driving chip submodule 211 by the relay, so that driving Dynamic chip submodule 211 can receive the motor control signal.Meanwhile elevator main control module 310 can be run according to elevator Demand generates motor drive signal, and the motor drive signal is transferred to driving chip submodule 211, so that driving chip is sub Module 211 can generate driving control signal according to the motor drive signal and motor control signal, and by driving control signal It is transferred to inversion submodule 212, to drive motor output pulse width tune of the inversion submodule 212 to the elevator host module 220 Signal processed, so as to control the operating of motor by the pulse-width signal.Wherein, the inversion submodule 212, for according to According to the driving control signal, the motor output pulse width modulated signal of Xiang Suoshu elevator host module 220.
In embodiments of the present invention, brake circuit control module 130 can use channel structure, specifically may include safety (SAFE) band-type brake power supply and band-type brake control circuit this two parts.No matter safety governor module 120 or elevator main control module 310, SAFE band-type brake power supply and band-type brake control circuit breakaway braking device circuit can be triggered, so that elevator is out of service.It is optional Ground, the brake circuit control module 130 include: band-type brake power supply submodule 131 and band-type brake control submodule 132.Wherein, described The second end of safety governor module 120 is connect with the brake circuit control module 130, comprising: the safety governor mould The second end of block 120 be separately connected the band-type brake power supply submodule 131 first input end and the band-type brake control submodule 132 First input end.As shown in figure 4, the first output end of the band-type brake power supply submodule 131 and the band-type brake control submodule 132 the second input terminal connection, the first output end of the band-type brake control submodule 132 and the elevator host module 220 Elevator brake 221 connects.
The band-type brake power supply submodule 131, the enable signal for exporting according to the safety governor module 120 are The band-type brake control submodule 132 is powered.Specifically, band-type brake power supply submodule 131 is detecting that safety governor module 120 is defeated It, can be based on the power supply that it is connected, such as the voltage that alternating current or reserve battery provide, to band-type brake control after enable signal out System module 132 exports supply voltage, to power for the band-type brake control submodule 132, so that band-type brake control submodule 132 can be with The electric current for generating control elevator brake 221, so that elevator brake 221 is in releasing orientation.The band-type brake control submodule 132, the enable signal for exporting according to the safety governor module 120 generates electric current.
In actual treatment, band-type brake power supply submodule 131 can be used as safety (SAFE) band-type brake power supply of elevator, and can adopt It is designed with high frequency switch power, can such as be considered from brake characteristic and electrical security angle, preferential selection isolation Type power supply design etc..Band-type brake power supply submodule 131 can realize different output voltages by the given reference voltage in outside, and The shutdown of transformer primary side switching tube can be controlled, by the enabled on-off in outside so as to open by closing in transformer primary side Guan Guan, so that transformer secondary exports supply voltage to band-type brake control submodule 132, and can be by disconnecting in transformer primary side Switching tube realizes the power-off of band-type brake control submodule 132, to discharge elevator brake.Wherein, transformer primary side switching tube can be with As power transistor, it is preferred that the power transistor can be Metal-Oxide Semiconductor field effect transistor (Metal- Oxide-Semiconductor Field-Effect Transistor, MOSFET), the embodiment of the present invention is not made this specifically Limitation.
In a kind of optional embodiment, as shown in figure 5, the band-type brake power supply submodule 131 may include: switch transformation Device unit 410 and power driving circuit 411.One end of the power driving circuit 411 and the safety governor module 120 Second end connection, the other end of the power driving circuit 411 are connect with the switch transformer unit 410, and the switch becomes The output end of depressor unit 410 is connect with the band-type brake control submodule 132.Wherein, the power driving circuit 411, is used for According to the enable signal to the 410 out-put supply driving signal of switch transformer unit, to drive the switch transformer Unit 410 is that the band-type brake controls 132 pieces of submodule power supplies.
In actual treatment, the fault-signal FB that brake circuit control module 130 detects may include band-type brake power supply Module 131 detects power failure signal FB1, and power failure signal FB1 can refer to that band-type brake power supply submodule 131 is detecting Generated signal when to SAFE band-type brake power supply short circuit failure.Optionally, the fault-signal FB includes power failure signal FB1, the band-type brake power supply submodule 131 can also include: power supply short circuit detection unit 412 and rectification filtering unit 413.It is described One end of power supply short circuit detection unit 412 connects the rectification filtering unit 413 and the switch transformer unit 410, described The other end of power supply short circuit detection unit 412 connects the 4th end of the safety governor module 120.Power supply short circuit detection is single The power failure signal FB1 for generating power failure signal FB1 when detecting short trouble, and is fed back to institute by member 412 Safety governor module 120 is stated, so that safety governor module 120 turns off enabled letter according to power failure signal FB1 The output of number EN.Wherein, enable signal EN can specifically include: power supply enable signal EN1 and band-type brake control enable signal EN2; Power supply enable signal EN1 can refer to the signal of driving band-type brake power supply submodule 131;Band-type brake control enable signal EN2 can be Refer to the signal of driving band-type brake control submodule 132.
In the concrete realization, it can have input short detection as the band-type brake power supply submodule 131 of SAFE band-type brake power supply Circuit, to detect the on off operating mode of transformer primary side switching tube by the input short detection circuit, and can be by the transformer primary The on off operating mode of side switching tube feeds back to safety governor module 120, allows safety governor module 120 according to the transformation The on off operating mode of device primary side switch pipe determines the need for closing the output of enable signal.Specifically, when switching tube on-off is abnormal When, safety governor module 120 can detect SAFE band-type brake power supply short circuit failure according to band-type brake power supply submodule 131, hair Emergency braking instructs out, disconnects enable signal EN1 and enable signal EN2, promotes elevator emergency brake.
Furthermore, it is possible to which the power input in band-type brake power supply submodule 131 increases redundancy relay K0, can such as rectify Redundancy relay K0 is connected in series in the input terminal of filter unit 413.When redundancy relay K0 in the closure state, alternating current can To be input to rectification filtering unit 413 by redundancy relay K0;Correspondingly, when redundancy relay K0 is disconnected, rectifying and wave-filtering Unit 413 does not receive alternating current input, is in off-position, so that elevator, which is in, stops scalariform state.Therefore, in security control When device module disconnects the output of enable signal EN1, redundancy relay can be triggered by 131 driving circuit of band-type brake power supply submodule Device K0 directly disconnects power input, guarantees the safety of brake circuit.Certainly, band-type brake power supply submodule 131 can also use Other modes disconnect power input in elevator faults, and the embodiment of the present invention is not specifically limited this.Wherein, power input End can be used as SAFE band-type brake power generating facilities and power grids input terminal.
In the embodiment of the present invention, optionally, the band-type brake control submodule 132 may include: control 421 He of driving unit Switch pipe unit 422.One end of the control driving unit 421 is connect with the second end of the safety governor module 120, institute The other end for stating control driving unit 421 is connect with the control terminal of the switch pipe unit 422;The switch pipe unit 422 First end is connect with the first output end of the band-type brake power supply submodule 131, it is described switch pipe unit 422 second end with it is described Elevator brake connection.The control driving unit, for the control terminal according to the enable signal to the switch pipe unit Output control driving signal, to control the working condition of the switch pipe unit.Specifically, when the work of switch pipe unit 422 State is closed state, i.e., when switching pipe unit 422 and be in the state that switching tube is closed, band-type brake control submodule 132 can be with Electric current is generated based on the supply voltage that band-type brake power supply submodule 131 exports, so that elevator brake 221 is in releasing orientation.When The working condition for switching pipe unit 422 is off-state, i.e., when switch pipe unit 422 is in the state of switching tube disconnection, i.e., Brake control circuit disconnects, so that band-type brake control submodule 132 can not be based on the power supply electricity that band-type brake power supply submodule 131 exports Pressure generates electric current, so that elevator brake 221 enters release conditions.
In the concrete realization, as the band-type brake control submodule 132 of band-type brake control circuit can by switch pipe unit 422, Driving circuit and short-circuit detecting circuit as control driving unit 421 are constituted.Wherein, switch pipe unit 422 may include one A or multiple switch pipe.The switching tube can choose using insulated gate bipolar transistor (IGBT), can also be imitated using power field Transistor etc. is answered, the present embodiment is not specifically limited this.Similar with SAFE band-type brake power supply, either switch pipe on-off is abnormal By the short-circuit detecting circuit detection in band-type brake control submodule 132.Band-type brake control submodule 132 is detecting that switching tube on-off is different It can produce corresponding fault-signal when often, and the fault-signal can be fed back to safety governor module 120, so that safety control Device module 120 processed issues emergency braking instruction, triggers elevator emergency brake.Furthermore, it is possible in embracing as band-type brake control circuit Increase time-delay relay K1, the fault control for elevator brake coil in lock control submodule 132.In view of elevator is normal Braking and emergency braking, time-delay relay K1 realize the fault control of elevator brake coil, the present embodiment by certain time-delay This is not specifically limited.
For example, one end of time-delay relay K1 can connect the coil first end of elevator brake 221, and time-delay relay The other end of K1 can connect the coil second end of elevator brake 221;When time-delay relay K1 is opened, after certain time-delay, It is open-minded that elevator main control module 130 controls band-type brake power supply enable signal EN1, and continuously sends out voltage Setting signal, so that in power supply Portion's switching tube enables open-minded, and the switching tube in switch transformer unit 410 is such as made to be in closed state, to control electricity for band-type brake Road power supply, and then the magnet excitation electric current of corresponding brake can be exported, maintenance electric current is exported automatically after delay 1 second (S) or 2S.? After electric power outputting current is established, band-type brake power supply submodule 131 and band-type brake control submodule 132 can be open-minded by switching tube respectively State corresponds to feedback signal transmission to safety governor module 120, to notify elevator master control by the safety governor module 120 The completion of 130 brake of module is opened a sluice gate, and elevator can be run.
In the present embodiment, the fault-signal FB that brake circuit control module 130 detects may include band-type brake control Module 132 detects control fault-signal FB2.Control fault-signal FB2 can refer to that lock control submodule 132 is detecting Generated signal when band-type brake control circuit.Optionally, the fault-signal FB may include: control fault-signal FB2, described Band-type brake control submodule 132 further include: band-type brake controls short detection unit 423.The band-type brake control short detection unit 423 First end is connect with the first end of the switch pipe unit 422, the second end of the band-type brake control short detection unit 423 and institute State the second end connection of switch pipe unit 422.The band-type brake controls short detection unit 423, for detecting the switching tube Control fault-signal FB2 is generated when 422 short circuit of unit, and the control fault-signal FB2 is fed back into safety governor module 120, so that output of the safety governor module 120 according to control fault-signal FB2 shutdown enable signal EN.
For example, the first end that band-type brake controls short detection unit 423 passes through diode connection switch pipe unit 422 such as Fig. 5 First end and band-type brake power supply submodule 131 the first output end, band-type brake control short detection unit 423 second end connection opens Close the second end of pipe unit 422 and the output end connection peace of elevator brake 221 and band-type brake control short detection unit 423 Full controller module 120, with when detecting switch 422 short trouble of pipe unit to 120 feedback control of safety governor module Fault-signal FB2 realizes elevator so that safety governor module 120 turns off the output of enable signal EN1 and enable signal EN2 Emergency braking.
Certainly, band-type brake control submodule 132 can also include other circuit units, such as can also include continuous current circuit, The embodiment of the present invention is not specifically limited this.
In an alternate embodiment of the present invention where, the band-type brake control submodule 132 can also include: that the afterflow is returned Road unit 424.One end of the continuous current circuit unit 424 connect the elevator brake 221 first end and the switching tube The second end of unit 422, the other end of the continuous current circuit unit 424 connect second end and the institute of the elevator brake 221 State the first output end of band-type brake power supply submodule 131.The continuous current circuit unit 424, for being closed in the switch pipe unit 422 When disconnected, the electric current of the elevator brake 221 is discharged.
In the present embodiment, safety signal acquisition module 110 can be used as the electric safety device of the safety return circuit of elevator, It can specifically include the electric safety switch and electronic switch in elevator, such as by hoistway safety switch, the Room/car door lock safety open The composition such as pass, car position sensor, door zone sensors.These electric safety switch and electronic switch can be with security controls Device module 120 connects, so that safety governor module 120 can receive each electric safety switch and each electronic switch The corresponding safety signal of state, is handled with the state according to each electric safety switch and electronic switch.For example, safety signal Each electronic switch and electric safety switch in acquisition module 110 are attached using parallel way, i.e., by safety return circuit structure It is set as parallel-connection structure, to reduce action delay brought by cascaded structure, so that in elevator timing more rationally.
In the concrete realization, the band-type brake control submodule 132 in the embodiment of the present invention may include one or more switches Pipe, actual design be contemplated that with 131 Integrated design of band-type brake power supply submodule, the embodiment of the present invention to this with no restriction.For example, embracing Lock control submodule 132 controls short circuit by switch pipe unit 422, control driving unit 421, continuous current circuit unit 424 and band-type brake Detection unit 423 is constituted.
In the case where elevator normal brake application, elevator main control module 310 controls the power supply of SAFE band-type brake power supply submodule 131 Enable signal EN1 is turned off in advance, so that power driving circuit 411 disconnects the switching tube in switching tube transformer unit 410, The driving of DC/DC converter switches pipe is such as disconnected, realizes that its grid blocks, so that brake circuit residual current passes through SAFE band-type brake Switch transformer unit 410 in power supply submodule 131 discharges at a slow speed, such as can be by being integrated in switch transformer unit 410 In secondary commutation filtering subunit discharge at a slow speed;It is delayed after a period of time, elevator main control module 310 can control band-type brake control Enable signal EN2 shutdown, so that brake circuit residual current passes through the fast quick-release of continuous current circuit in band-type brake control circuit 120 It puts, so that power cutoff is enabled, i.e., power cutoff exports electric current.After electric power outputting current shutdown, band-type brake power supply submodule 131 It can be to 120 feedback switch pipe off state of safety governor module, so that safety governor mould with band-type brake control submodule 132 Block 120 completes brake barrier gate according to switching tube off state, and it is out of service to realize elevator.
In the case where elevator emergency brake, such as when electric safety device disconnects, safety governor module 120 can be according to According to the collected safety signal of safety signal acquisition module, safety device failure is determined, and issue corresponding emergency braking and refer to It enables, simultaneously switches off power supply enable signal EN1 and band-type brake control enable signal EN2, so that SAFE band-type brake power circuit (i.e. band-type brake electricity Source submodule 131) and band-type brake control circuit (i.e. band-type brake control submodule 132) almost simultaneously realize shutdown so that brake Device circuit residual current passes through 424 quick release of continuous current circuit unit in band-type brake control submodule 132, power cutoff output electricity Stream.After power cutoff exports electric current, band-type brake power supply submodule 131 and band-type brake control submodule 132 can be with feedback switch pipes Off state is to safety governor module 120, so that the urgent barrier gate of elevator brake, achievees the purpose that elevator emergency brake.
In actual treatment, constant output is both can be used in the band-type brake power supply submodule 131 as SAFE band-type brake power circuit, (Pulse can also can also be modulated by the pulse width of elevator master control by the given output for realizing various modes of voltage Width Modulation, PWM) the adjustable output of chop control realization etc., the embodiment of the present invention is not specifically limited this.Example Such as, the power driving circuit 411 in band-type brake power circuit can wrap containing a PWM controller, by the PWM controller to electricity Source enable signal EN1 carries out timing control, and in combination with the different implementations of band-type brake power circuit output, realizes different Control for brake effect has a wide range of application to cope with the braking requirement of different elevator devices.Certainly, power driving circuit 411 may be used also It can also include such as voltage close loop, which can be defeated with switch transformer unit 410 to include other circuit units Outlet connection, and the voltage Setting signal received can be transmitted the PWM controller, so that PWM controller is receiving power supply After enable signal EN1, it can export and correspond to according to power switch tube of the voltage Setting signal into switch transformer unit 410 Power driving signal, so that switch transformer unit 410 is that band-type brake controls 132 pieces of submodule power supplies, this example is not made this specifically Limitation.
As it can be seen that the brake circuit control module in this example include band-type brake power circuit and band-type brake control circuit the two Part, using the channel structure of differentiation to design realizes the control of brake circuit on-off.Specifically, as band-type brake power supply The band-type brake power supply submodule 131 of circuit can be enabled EN1 by externally input power supply and realize that the on-off of power supply itself controls, as The band-type brake control submodule 132 of band-type brake control circuit can be controlled enable signal EN2 by band-type brake and realize the output of band-type brake power circuit The on-off of side controls, and improves the safety of elevator internal contracting brake control circuit.
In addition, safety governor module can be using the bilateral containing micro-control unit (Micro Control Unit, MCU) Road design, as shown in figure 5, safety governor module may include two logic processors as MCU, respectively logical process Device 1 and logic processor 2, it is preferred that can also be using the channel structure etc. with hardware comparator, this example does not make this Concrete restriction.For example, hardware list can be used when safety governor module is a channel structure with hardware comparator Member cyclically or is continuously compared the signal of two processors, wherein comparator can be the detection of an outside Unit is designed to one from monitoring device;Or processor can be used, the signal in two channels is compared, In, comparator can be the detection unit an of outside or be designed to one from monitoring device etc..
To sum up, the elevator safety control system of the embodiment of the present invention controls mould using the brake circuit of modularized design elevator Block and electric motor loop control module, the electric motor loop control module can be used as the frequency converter of elevator motor, so as to not reduce Under the premise of elevator safety, so that the cabinet body layout of elevator is more succinct.In addition, the embodiment of the present invention is controlled in elevator safety Safety governor module is increased in system, and the disconnected knot of bilateral can be used in the security logic processing part of the safety governor module Structure design, so that elevator main control module can be merely responsible for non-elevator security function, so that elevator system design and function distribution are more Rationally.For example, can specifically include motor and brake electric current as the elevator non-safety function that elevator main control module is realized Signal processing, team control signal processing and telecommunication etc., the embodiment of the present invention are called/called together outside to control, interior together at the control of the Room/gate With no restriction to this.
In addition, the elevator safety control system integration of the embodiment of the present invention such as control of brake circuit on-off, motor return The non-safety functions such as the security functions such as road on-off control and braking power output are adjusted, frequency converter output is adjusted, take into account The security function of elevator device and function is used, can be applied in different elevator devices, compatibility is high, has a wide range of application.
The embodiment of the present invention also provides a kind of elevator security control method, is applied in elevator safety control system.The electricity Terraced safety control system can be elevator safety control system mentioned by any of the above-described embodiment.
Referring to Fig. 6, the step flow chart of one of embodiment of the present invention elevator security control method is shown.The elevator Method of controlling security can specifically include following steps:
Step 610, the safety signal according to the output of safety signal acquisition module, triggering safety governor module generate enabled Signal;
Step 620, according to the enable signal, brake circuit control module is triggered to elevator brake and exports electric current, is made It obtains the elevator brake and is in releasing orientation;
Step 630, when detecting short trouble to safety governor module feedback fault-signal, to trigger the safety Controller module stops exporting the enable signal to the brake circuit control module, releases so that the elevator brake is in Put state.
In embodiments of the present invention, optionally, elevator security control method can also include: according to the safety governor The motor control signal of module output, to elevator host module output pulse width modulated signal, to control the elevator host module Motor operating.
In an alternate embodiment of the present invention where, when detecting short trouble, the method can also include: foundation The fault-signal closes the output of the motor control signal, stops the pulsewidth to trigger the electric motor loop control module The output of modulated signal.
In an alternate embodiment of the present invention where, the motor control signal according to safety governor module output, It to elevator host module output pulse width modulated signal, can specifically include:, will be described by the relay of safety governor module Motor control signal is transferred to driving chip submodule, allow driving chip submodule according to the motor control signal and The driving control signal that the motor drive signal of elevator main control module output is exported to inversion submodule, so as to trigger inversion Submodule is according to the driving control signal to the motor output pulse width modulated signal of the elevator host module.
In embodiments of the present invention, optionally, brake circuit control module may include: band-type brake power supply submodule and band-type brake Control submodule.It is above-mentioned to trigger brake circuit control module to elevator brake and export electric current according to the enable signal, it can be with It include: the enable signal according to safety governor module output, triggering band-type brake power supply submodule is band-type brake control Module for power supply, the enable signal that band-type brake control submodule is exported according to the safety governor module generate electric current.
In an alternate embodiment of the present invention where, the band-type brake power supply submodule may include: switch transformer unit And power driving circuit.According to the enable signal of safety governor module output, triggering band-type brake power supply submodule is described The power supply of band-type brake control submodule may include: power driving circuit according to the enable signal to the switch transformer unit Out-put supply driving signal, to drive the switch transformer unit for band-type brake control submodule power supply.
Furthermore, fault-signal may include power failure signal, and the band-type brake power supply submodule can also include: Power supply short circuit detection unit and rectification filtering unit.This method further include: examined by the power supply short circuit in band-type brake power supply submodule It surveys unit and detects short trouble.It is above-mentioned when detecting short trouble to safety governor module feedback fault-signal, specifically may be used Power supply short circuit detection unit generates power failure signal when detecting short trouble to include:, and by the power failure signal Feed back to the safety governor module.It is thus possible to trigger the output that the safety governor module stops enable signal.
In an alternate embodiment of the present invention where, the band-type brake control submodule includes: control driving unit and switch Pipe unit.It is above-mentioned according to the enable signal, trigger brake circuit control module to elevator brake and export electric current, can wrap Include: control driving unit controls driving signal according to enable signal is received, to the control terminal output of the switch pipe unit, with Control the working condition of the switch pipe unit.When the working condition for switching pipe unit is closed state, band-type brake controls submodule The power supply signal that block can be exported based on band-type brake power supply submodule generates electric current, so that elevator brake is in releasing orientation.
In an alternate embodiment of the present invention where, the fault-signal includes: control fault-signal, the band-type brake control Submodule can also include: band-type brake control short detection unit.This method further include: pass through the band-type brake in band-type brake control submodule It controls short detection unit and detects band-type brake control submodule failure, such as detect the short failure of band-type brake control submodule.It is above-mentioned to examine To safety governor module feedback fault-signal when measuring short trouble, can specifically include: band-type brake controls short detection unit When detecting switch pipe unit short circuit, control fault-signal is generated, and the control fault-signal is fed back into security control Device module.
Optionally, the band-type brake control submodule can also include: the continuous current circuit unit.Above-mentioned elevator safety control Method can also include: that the electricity of the elevator brake is discharged by continuous current circuit unit in switch pipe unit shutdown Stream.
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method It closes, but those skilled in the art should understand that, embodiment of that present invention are not limited by the describe sequence of actions, because according to According to the embodiment of the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should Know, the embodiments described in the specification are all preferred embodiments, and the related movement not necessarily present invention is implemented Necessary to example.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can provide as method, apparatus or calculate Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code The form of the computer program product of implementation.
The embodiment of the present invention be referring to according to the method for the embodiment of the present invention, terminal device (system) and computer program The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions In each flow and/or block and flowchart and/or the block diagram in process and/or box combination.It can provide these Computer program instructions are set to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals Standby processor is to generate a machine, so that being held by the processor of computer or other programmable data processing terminal devices Capable instruction generates for realizing in one or more flows of the flowchart and/or one or more blocks of the block diagram The device of specified function.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing terminal devices In the computer-readable memory to work in a predictive manner, so that instruction stored in the computer readable memory generates packet The manufacture of command device is included, which realizes in one side of one or more flows of the flowchart and/or block diagram The function of being specified in frame or multiple boxes.
These computer program instructions can also be loaded into computer or other programmable data processing terminal devices, so that Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus The instruction executed on computer or other programmable terminal equipments is provided for realizing in one or more flows of the flowchart And/or in one or more blocks of the block diagram specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
Above to a kind of elevator safety control system provided by the present invention and method, it is described in detail, herein Apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to help Understand method and its core concept of the invention;At the same time, for those skilled in the art, according to the thought of the present invention, There will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as to this The limitation of invention.

Claims (12)

1. a kind of elevator safety control system characterized by comprising safety signal acquisition module, safety governor module and Brake circuit control module;
Wherein, the first end of the safety governor module is connect with the safety signal acquisition module, and the security control The second end of device module is connect with the brake circuit control module;
The safety governor module, the safety signal for exporting according to the safety signal acquisition module generate enabled letter Number, and the enable signal is transferred to the brake circuit control module;
The brake circuit control module is unclamped for generating electric current according to the enable signal so that elevator brake is in State;And when detecting short trouble to the safety governor module feedback fault-signal, to trigger the safety control Device module processed stops the output of the enable signal, so that the elevator brake is in release conditions.
2. system according to claim 1, which is characterized in that further include: electric motor loop control module and elevator host mould Block;
One end of the electric motor loop control module is connect with the safety governor module, the electric motor loop control module The other end is connect with the elevator host module;
The electric motor loop control module, the motor control signal for being exported according to the safety governor module, to elevator Host module output pulse width modulated signal, to control the motor operating of the elevator host module;
The safety governor module is also used to close the output of the motor control signal according to the fault-signal, with touching Sending out electric motor loop control module described stops the output of the pulse-width signal.
3. system according to claim 2, which is characterized in that the system also includes: elevator main control module, the motor Circuit control module includes driving chip submodule and inversion submodule;
Wherein, the first end of the driving chip submodule is connect with the relay of the safety governor module, the driving The second end of chip submodule is connect with the inversion submodule and the third end of the driving chip submodule and the electricity Terraced main control module connection;
The relay, for the motor control signal to be transferred to the driving chip submodule;
The driving chip submodule, for being driven according to the motor of the motor control signal and elevator main control module output Dynamic signal, the driving control signal of Xiang Suoshu inversion submodule output;
The inversion submodule, for according to the driving control signal, the motor output pulse width of Xiang Suoshu elevator host module Modulated signal.
4. system according to claim 3, which is characterized in that the brake circuit control module includes: band-type brake power supply Module and band-type brake control submodule;
Wherein, the second end of the safety governor module is connect with the brake circuit control module, comprising: the safety control The second end of device module processed is separately connected the first input end and band-type brake control submodule of the safe internal contracting power supply submodule The first input end of block;
First output end of the band-type brake power supply submodule is connect with the second input terminal of the band-type brake control submodule, and described armful First output end of lock control submodule is connect with the elevator brake of the elevator host module;
The band-type brake power supply submodule, the enable signal for exporting according to the safety governor module are the band-type brake control System module for power supply;
The band-type brake control submodule, the enable signal for exporting according to the safety governor module generate electric current.
5. system according to claim 4, which is characterized in that the band-type brake power supply submodule includes: switch transformer list Member and power driving circuit;
One end of the power driving circuit is connect with the second end of the safety governor module, the power driving circuit The other end is connect with the switch transformer unit, the output end of the switch transformer unit and the band-type brake control submodule Connection;
The power driving circuit is believed for driving according to the enable signal to the switch transformer unit out-put supply Number, to drive the switch transformer unit for band-type brake control submodule power supply.
6. system according to claim 5, which is characterized in that the fault-signal includes power failure signal, and described armful Lock power supply submodule further include: power supply short circuit detection unit and rectification filtering unit;
One end of the power supply short circuit detection unit connects the rectification filtering unit and the switch transformer unit, the electricity The other end of source short detection unit connects the 4th end of the safety governor module;
The power supply short circuit detection unit, for generating power failure signal when detecting short trouble, and the power supply is former Barrier signal feeds back to the safety governor module.
7. according to any system of claim 4 to 6, which is characterized in that the band-type brake control submodule includes: that control is driven Moving cell and switch pipe unit;
One end of the control driving unit is connect with the second end of the safety governor module, the control driving unit The other end is connect with the control terminal of the switch pipe unit;
The first end of the switch pipe unit is connect with the first output end of the band-type brake power supply submodule, the switch pipe unit Second end connect with the elevator brake;
The control driving unit, for the control terminal output control driving according to the enable signal to the switch pipe unit Signal, to control the working condition of the switch pipe unit.
8. system according to claim 7, which is characterized in that the fault-signal includes: control fault-signal, and described armful Lock control submodule further include: band-type brake controls short detection unit;
The first end of the band-type brake control short detection unit is connect with the first end of the switch pipe unit, the band-type brake control The second end of short detection unit is connect with the second end of the switch pipe unit;
The band-type brake controls short detection unit, for generating control failure letter when detecting the switch pipe unit short circuit Number, and the control fault-signal is fed back into safety governor module.
9. system according to claim 8, which is characterized in that the band-type brake control submodule further include: the afterflow is returned Road unit;
One end of the continuous current circuit unit connects the first end of the elevator brake and the second end of the switch pipe unit, The other end of the continuous current circuit unit connect the elevator brake second end and the band-type brake power supply submodule first Output end;
The continuous current circuit unit, for discharging the electric current of the elevator brake in switch pipe unit shutdown.
10. a kind of elevator security control method, which is characterized in that the described method includes:
According to the safety signal of safety signal acquisition module output, triggering safety governor module generates enable signal;
According to the enable signal, brake circuit control module is triggered to elevator brake and exports electric current, so that the elevator system Dynamic device is in releasing orientation;
When detecting short trouble to safety governor module feedback fault-signal, stopped with triggering the safety governor module The enable signal only is exported to the brake circuit control module, so that the elevator brake is in release conditions.
11. according to the method described in claim 10, it is characterized by further comprising:
According to the motor control signal of safety governor module output, to elevator host module output pulse width modulated signal, To control the motor operating of the elevator host module.
12. according to the method for claim 11, which is characterized in that when detecting short trouble, the method also includes:
The output of the motor control signal is closed according to the fault-signal, is stopped with triggering the electric motor loop control module The output of the pulse-width signal.
CN201811385713.9A 2018-11-20 Elevator safety control system and method Active CN109534111B (en)

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CN108821044A (en) * 2018-05-30 2018-11-16 苏州汇川技术有限公司 Band-type brake control circuit and elevator device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1030391A (en) * 1987-07-06 1989-01-18 三菱电机株式会社 The control setup of alternating-current electrical lift
JP2003081543A (en) * 2001-09-14 2003-03-19 Toshiba Elevator Co Ltd Brake control device for elevator
CN201901495U (en) * 2010-11-30 2011-07-20 广州富菱达电梯有限公司 Control system integrating elevator control, drive and energy feedback
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