CN105800413A - Elevator fault diagnosis device and method - Google Patents

Elevator fault diagnosis device and method Download PDF

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Publication number
CN105800413A
CN105800413A CN201610348000.XA CN201610348000A CN105800413A CN 105800413 A CN105800413 A CN 105800413A CN 201610348000 A CN201610348000 A CN 201610348000A CN 105800413 A CN105800413 A CN 105800413A
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China
Prior art keywords
elevator
loop
detection unit
lift
resistance value
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CN201610348000.XA
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Chinese (zh)
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CN105800413B (en
Inventor
邓立保
聂泳忠
林梅英
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西人马(厦门)科技有限公司
邓立保
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006Monitoring devices or performance analysers
    • B66B5/0018Devices monitoring the operating condition of the elevator system
    • B66B5/0025Devices monitoring the operating condition of the elevator system for maintenance or repair
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B3/00Applications of devices for indicating or signalling operating conditions of elevators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006Monitoring devices or performance analysers
    • B66B5/0018Devices monitoring the operating condition of the elevator system
    • B66B5/0031Devices monitoring the operating condition of the elevator system for safety reasons

Abstract

The invention relates to an elevator fault diagnosis device and a method. The elevator fault diagnosis device comprises an elevator loop detecting unit and a main controller; and the elevator loop detecting unit is used for measuring a resistance value of an elevator loop. The main controller is connected to the elevator loop detecting unit for judging the fault condition of the elevator loop according to the resistance value of the elevator loop. The invention further discloses an elevator fault diagnosis method.

Description

Elevator failure diagnosis device and method
Technical field
The invention belongs to elevator observation and control technology field, relate more specifically to a kind of elevator failure diagnosis device and method.
Background technology
At present, China has become the country that elevator recoverable amount is maximum in the world, and elevator safety problem becomes increasingly conspicuous.Adding up according to State General Administration for Quality Supervision, from 2003 so far, the security incident of elevator is rank first to third in eight big class special equipments always.According to statistics, in many factors causing elevator safety hidden danger, workmanship accounts for 16%, installs and accounts for 24%, and maintenance and the problem of use are up to 60%.Present overhauling elevator system, it is necessary to after failure, is carried out breakdown judge solution by maintainer to scene.And owing to elevator faults is various and region restriction, can not quickly and efficiently find and solution problem.
For ensureing that elevator can run safely, equipped with many safety components on elevator.Under normal conditions, elevator could run only each safety component, and otherwise elevator is out of service immediately.So-called safety return circuit, it is simply that be equipped with a safety switch at each safety component of elevator, all of safety switch is connected, control a safety relay.Only all safety switches are all when connecting, and safety relay adhesive, elevator could obtain electric operation.General elevator safety loop includes contact and the relay of the devices such as phase sequence protective relay, limiter of speed, safety tongs, emergency stop push button, emergency exit switch, pit switch, limit switch.Wherein a certain device action elevator safety loop relay electric-loss, elevator just cannot travel, even the elevator travelled also therefore Brake stop.
And for ensureing that elevator could must run after whole doors are closed, often fanning, hall door and gate are equipped with an electric interlock switch.Only must be turned on i.e. whole door electric interlocks at loop of the door lock to switch when being all turned on, the door lock relay of control panel can adhesive, elevator could run.Door lock assembly is that in elevator, consumption is very big, the safety component that safety coefficient is significantly high.Only floor layer door in car place can be unlocked, and remainder layer door does not allow to be unlocked.
Summary of the invention
The elevator of newer type number is likely to when dispatching from the factory be provided with sensor, and these sensors can detect the parameter in running process of elevator, and exports the parameter that detects and judge whether elevator exists fault for the Operation and Maintenance personnel of elevator.But, the parameter detected and the mode exporting these parameters etc. are relevant with the structure of elevator, principle etc., and different elevator manufacturers elevator model not even together is likely to adopt different parameters.And, substantial amounts of old-fashioned elevator cannot provide such parameter even at all.This makes the running status of supervision elevator and judges that after having an accident cause of accident etc. is very inconvenient.And the loop detector structure of the elevator of this kind of newer type number is complex, and the device of the simple and effective detection lift loop of neither one or method, this also makes to utilize lift loop safety index, in conjunction with other elevator operating index, lift running safety is carried out comprehensive descision and there is bigger difficulty.
A kind of situation is when elevator safety loop is shorted, if elevator is still in express running status, elevator will very easily be caused danger.Such as when safety return circuit breaks down, maintainer's short circuit safety return circuit because of job demand sometimes in maintenance process, when maintenance terminates, must first take down door lock shorting stub, elevator can be returned to express state.If when maintenance, it does not have open inspection switch in advance with regard to short circuit safety return circuit;Or after maintenance terminates, forget to take down safe shorting stub;Or when there are other artificial short circuit safety return circuits, then can cause that elevator is at short circuit safety return circuit, also runs with fast vehicle speed, this is breakneck.Or when loop of the door lock breaks down, general maintenance way is to guarantee under inspecting state, separates short circuit hall door lock and car door lock at control panel, separates hall door part or gate partial fault;Guarantee under inspecting state, short circuit hall door lock loop, runs elevator with inspection speed.When maintenance terminates, must first take down door lock shorting stub, elevator can be returned to express state.If when maintenance, it does not have open inspection switch in advance with regard to short circuit loop of the door lock;Or after maintenance terminates, forget to take down door lock shorting stub;Or when there are other artificial short circuit loop of the door lock, then can cause that elevator is at short circuit loop of the door lock, also runs with fast vehicle speed, this is breakneck.
The invention provides a kind of elevator failure diagnosis device and a kind of Elevator Fault Diagnosis method.
According to an aspect of the present invention, provide a kind of elevator failure diagnosis device, this elevator failure diagnosis device includes lift loop detection unit and master controller, and this lift loop detection unit is set to serial or parallel connection in lift loop to be detected, for measuring the resistance value of lift loop.This master controller is connected to this lift loop detection unit, for judging the failure condition of lift loop according to the resistance value of lift loop.
According to a further aspect in the invention, it is provided that a kind of Elevator Fault Diagnosis method, the resistance value including the step of the resistance value of measurement lift loop with according to lift loop judges the step of the failure condition of lift loop.
This diagnostic equipment and method can be easy to attendant to the location of elevator faults and solution;And each several part real-time status of elevator monitoring can be analyzed and predict the generation of fault, it is proposed to maintenance warning, thus the significant trouble of elevator is prevented trouble before it happens.
Accompanying drawing explanation
Being more clearly understood from the features and advantages of the present invention by reference accompanying drawing, accompanying drawing is schematic and should not be construed as and the present invention is carried out any restriction, in the accompanying drawings:
Fig. 1 illustrates the block diagram of an embodiment of the elevator failure diagnosis device according to the present invention;
Fig. 2 illustrates the flow chart of an embodiment of the Elevator Fault Diagnosis method according to the present invention.
Detailed description of the invention
Feature and the exemplary embodiment of various aspects of the invention are described more fully below.In the following detailed description, it is proposed that many details, in order to complete understanding of the present invention is provided.But, it will be apparent to those skilled in the art that the present invention can implement when some details in not needing these details.Below the description of embodiment is only used to by illustrating that the example of the present invention provides being better understood from the present invention.The present invention is never limited to any concrete configuration set forth below and method, but covers any amendment, replacement and the improvement of element, parts and algorithm under the premise of without departing from the spirit of the present invention.In the the accompanying drawings and the following description, it does not have known structure and technology are shown, in order to avoid the present invention causes unnecessary obscuring.
Below in conjunction with accompanying drawing, elevator failure diagnosis device according to embodiments of the present invention, method and controller are described in detail.
Fig. 1 illustrates the block diagram of an embodiment of the elevator failure diagnosis device according to the present invention.
As it is shown in figure 1, this elevator failure diagnosis device can include lift loop detection unit and master controller 108, this lift loop detection unit is for measuring the resistance value of lift loop.This master controller may be coupled to described lift loop detection unit, for judging the failure condition of lift loop according to the resistance value of lift loop.This lift loop detection unit can be configured so that serial or parallel connection is in lift loop to be detected.In one embodiment, this device can include display unit 110, and master controller 108 just judged result can be sent to display unit.Display unit 110 is displayed for the judged result that this master controller 108 is sent.Master controller 108 can be arranged on lift car interiorly or exteriorly, it is also possible to is arranged in elevator clipping room, it is also possible to be positioned at remotely relative to elevator, for instance be arranged in the Control Room of elevator.
In one embodiment, as required, Control Room can also arrange memory element 109, alarm unit 111 etc..Master controller 108 is when judged result is beyond operation predetermined threshold value, it is possible to send alarm signal to alarm unit 111, to be notified the Operation and Maintenance personnel of elevator by alarm unit 111.Memory element 109 can store the judged result of master controller 108 in time, to provide the long-time statistical data about elevator ride quality.Additionally, in one embodiment, master controller 108 is connected with the alarm unit 111 on remote server, display unit 110, memory element 109 by the mode of radio communication such that it is able to be easy to attendant to the location of elevator faults and solution;And the elevator brake of elevator monitoring and/or the abrasion of power part and lubrication circumstances can be analyzed and predict the generation of fault, it is proposed to maintenance warning, thus the significant trouble of elevator is prevented trouble before it happens.
In one embodiment, the lift loop resistance detection unit of this device can include elevator door lock loop detection unit.Master controller may be coupled to this elevator door lock loop detection unit, it is possible to for the resistance value of elevator door lock loop is processed, and then judges the failure condition of lift loop.Such as when loop resistance value infinity, then circuit switching damages, and car cannot run, and prompting repair and maintenance personnel keep in repair;Or when resistance value excessive (but not being open circuit conditions), for instance the reasons such as circuit switching weares and teares, dust is too much cause, prompting repair and maintenance personnel maintain, it is prevented that breaks down.This loop of the door lock detection unit can be configured so that and is connected in loop of the door lock, it is also possible to be connected in parallel in loop of the door lock.In one example, for the purpose of for greater safety, elevator door lock loop detection unit 102 is connected in loop of the door lock, and does not select parallel way, it is prevented that measuring unit self damages the short circuit caused.Can also arranging that this elevator door lock loop detection unit is disposed through that own power source powers adopts the power supply identical with elevator.
In one embodiment, this device can also include the vertical speed of service detection unit of car, this master controller can be also used for the vertical speed of service of the resistance value according to elevator door lock loop and described lift car, it is judged that whether elevator belongs to safe operation state.The vertical speed of service detection unit of car here can be arranged on car or jointly do on the elevator components moved both vertically with car.Such as can detect in car, car outer wall and car do the positions such as drawing system, elevator electrical apparatus control system, elevator guidance system of dragging moved both vertically jointly, and the rate results in these position measurements can be assumed that it is the vertical speed of service of elevator.In one example, can connect in elevator door lock loop a resistance detection unit, it is possible to for measuring the resistance value of loop of the door lock.When a certain with door lock shorting stub short circuit loop of the door lock or several switch time, owing to the resistance of shorting stub Yu circuit switching is inconsistent so that resistance detection unit export result different.Such as, the resistance of door interlock switch is R0, the resistance of shorting stub is R1, then threshold value R, a R can be set1≤R≤R0, when the result of loop of the door lock resistance detection unit is less than R, can determine whether the situation that there is short circuit in loop of the door lock;Now need to judge that elevator is in normal maintenance, can pass through here to judge whether elevator is in idling rating, and then judge whether elevator is in safe operation state.In one example, the vertical speed of service detection unit of car can be passed through, the detection current car speed of service in the vertical direction, when cage operation speed is beyond maintenance speed, during (maintenance speed is a very low speed usually, it was shown that elevator is in service mode) here, master controller 108 sends alarm signal to alarm unit 111, notice alarm unit 111 is reported to the police, and points out maintainer and passenger.
In one embodiment, the lift loop resistance detection unit of this device can include elevator safety loop detection unit.Master controller may be coupled to this elevator safety loop detection unit, it is possible to for the resistance value of elevator safety loop is processed, and then judges the failure condition of lift loop.Such as when loop resistance value infinity, then circuit switching damages, and car cannot run, and prompting repair and maintenance personnel keep in repair;Or when resistance value excessive (but not being open circuit conditions), for instance the reasons such as circuit switching weares and teares, dust is too much cause, prompting repair and maintenance personnel maintain, it is prevented that breaks down.This safety return circuit detection unit can be configured so that and is connected in safety return circuit, it is also possible to be connected in parallel in safety return circuit.In one example, for the purpose of for greater safety, elevator safety loop detection unit 103 is connected in safety return circuit, and does not select parallel way, it is prevented that measuring unit self damages the short circuit caused.Can also arranging that this elevator safety loop detection unit is disposed through that own power source powers adopts the power supply identical with elevator.
In one embodiment, this device can also include the vertical speed of service detection unit of car, this master controller can be also used for the vertical speed of service of the resistance value according to elevator safety loop and described lift car, it is judged that whether elevator belongs to safe operation state.The vertical speed of service detection unit of car here can be arranged on car or jointly do on the elevator components moved both vertically with car.Such as can detect in car, car outer wall and car do the positions such as drawing system, elevator electrical apparatus control system, elevator guidance system of dragging moved both vertically jointly, and the rate results in these position measurements can be assumed that it is the vertical speed of service of elevator.In one example, can connect in elevator safety loop a resistance detection unit, it is possible to for measuring the resistance value of safety return circuit.When a certain with safe shorting stub short circuit safety return circuit or several switch time, owing to the resistance of shorting stub Yu circuit switching is inconsistent so that resistance detection unit export result different.Such as, the resistance of safety switch is R0 *, the resistance of shorting stub is R1 *, then a threshold value R can be set*, R1 *≤R*≤R0 *, when the result of safety return circuit resistance detection unit is less than R*Time, can determine whether the situation that there is short circuit in safety return circuit;Now need to judge that elevator is in normal maintenance, can pass through here to judge whether elevator is in idling rating, and then judge whether elevator is in safe operation state.In one example, the vertical speed of service detection unit of car can be passed through, the detection current car speed of service in the vertical direction, when cage operation speed is beyond maintenance speed, during (maintenance speed is a very low speed usually, it was shown that elevator is in service mode) here, master controller 108 sends alarm signal to alarm unit 111, notice alarm unit 111 is reported to the police, and points out maintainer and passenger.
In one embodiment, this device can include band-type brake operation detection unit, it is possible to for detecting the vibration signal of band-type brake action.The vibration signal of band-type brake action includes the open/close lock action vibration signal of left and right band-type brake.Acceleration transducer can detect the acceleration of the open/close lock action of left and right band-type brake.Master controller 108 can extract the initial time t of the open/close lock action of left and right band-type brake from the vibration signal of the open/close lock action of left and right band-type brake0L、t0RWith stop timing t1L、t1RThe pulsewidth Δ t of open/close lock actuating signal can also be calculatedL、ΔtR(such as by Δ tL=t1L-t0LDeng).Master controller 108 can determine whether whether left and right band-type brake open/close lock action exists time delay.The band-type brake action delay time is to the delay time opening band-type brake after motor torque, and the effect of elevator internal contracting brake is when lift car is in the electromechanical device that static and motor is under power failure state to prevent elevator from moving again.In some control form, it can check elevator when motor power-off.When its control mode is usually electric, band-type brake unclamps, and during dead electricity, band-type brake is held tightly.As it has been described above, band-type brake runs detection unit 101 by extracting the initial time t of the open/close lock action of left and right band-type brake0L、t0RWith stop timing t1L、t1RThus effectively judging that whether the action of the open/close lock action of the left and right band-type brake of elevator is consistent, whether band-type brake action exists time delay, and in time the need of maintenance, elevator is carried out anticipation for result above, improves the safety of elevator and the ageing of elevator repair and maintenance.
In one embodiment, the acceleration a of the open/close lock action detected according to acceleration vibrating sensor1, it is known that the useful frictional force of pulley embraced by band-type brake is Fc=μ Fb=μm a1, wherein μ is the coefficient of friction of the grooving traction steel-cable of traction sheave, FbFor band-type brake pressure, m is the quality of band-type brake.And according to lift dragging machine structure, open a sluice gate the suffered i.e. useful frictional force=coefficient of friction * (brake force-spring force-resistance) that makes a concerted effort, close a floodgate the suffered i.e. useful frictional force=coefficient of friction * (spring force-resistance) that makes a concerted effort.Because quality m remains unchanged in above formula, the Facing material of coefficientoffrictionμ and steel wire rope and traction sheave has relation, and when the two does not occur to wear and tear, μ is it is believed that remain unchanged;Therefore FcChange can be converted into acceleration a1Change.
If acceleration transducer output acceleration signal is fT(t), fTT the Fourier transformation of () is FT(ω), according to Parseval's theorem, fTThe energy of (t)Wherein, G (f)=| FT(ω)|2It is called energy spectral density.
F T ( ω ) = ∫ - ∞ + ∞ f T ( t ) e - i w t d t
Therefore,
Therefore to institute's measuring acceleration value, can be quadratured by such as Fourier transformation mode, it is thus achieved that energy spectral density.
Whether normal according to the pulsewidth of left and right open/close lock, energy spectral density, it can be determined that whether band-type brake pressure is normal, obtains band-type brake running quality.And in time elevator can be carried out anticipation the need of maintenance according to result above, improve the security performance of elevator.In one example, elevator is in running status still brake halted state judgement in, elevator switching detection unit can also adopt band-type brake run detection unit in acceleration vibrating sensor judge.
In one embodiment, elevator failure diagnosis device also includes car and vertically runs detection unit 106, described car vertically runs detection unit 106 for gathering the vertical speed of service of lift car, and the vertical speed of service of lift car can be understood as the speed of service up and down of lift car.Railway carriage or compartment is vertically run detection unit and can be arranged on inside and outside car and can also be arranged on jointly do on the elevator components moved both vertically with car, in such as can being arranged on car, car outer wall and car jointly do the positions such as drawing system, elevator electrical apparatus control system, elevator guidance system of dragging moved both vertically, the acceleration result in these position measurements can be assumed that it is the vertical speed of service of car.The vertical run signal of car can being arranged security maintenance threshold value and threshold value of warning, if during safeguarding, the vertical speed of service of car exceeds security maintenance threshold value, then propose alarm, for instance master controller 108 can send alarm signal to alarm unit 111;If elevator properly functioning period, the vertical speed of service of car exceeds threshold value of warning, excessive velocities or excessively slow, then propose alarm, for instance master controller 108 sends alarm signal to alarm unit 111, reminds repair and maintenance personnel to safeguard.
In one embodiment, elevator failure diagnosis device also includes elevator abnormal sound detection unit 104, and described elevator abnormal sound detection unit 104 is for gathering the audio signal that elevator run duration produces, and described elevator abnormal sound detection unit such as can be arranged on the outside of car.In one embodiment, described elevator abnormal sound detection unit can be arranged on the top outside car and/or inside elevator hoistways.
In one embodiment, audio signal is easily separated and extracts by master controller 108, rejects the interference of useless audio signal.Audio signal is with the frequency of regular sound wave of voice, music and audio, amplitude of variation result carrier.Feature according to sound wave, can be categorized as audio result rule audio frequency and irregular sound.Wherein rule audio frequency can be divided into again voice, music and audio.Rule audio frequency is a kind of continuously varying analog signal, can represent with a continuous print curve, be called sound wave.Three key elements of sound are tone, loudness of a sound and tone color.Sound wave or sine wave have three important parameters: frequencies omega 0, amplitude A n and phase place ψ n, and this also just determines the feature of audio signal.The sound that useless the audio frequency such as wind and people of the audio signal detected cause can be rejected according to the characteristic use of audio signal existing audio frequency separation equipment;Further, the sound sound intensity is calculated in real time.When the sound intensity exceedes setting threshold value, it is proposed to early warning;And voice data is preserved, diagnose and analyzes, check whether elevator components weares and teares abnormal with foreign body obstruction etc..And in time elevator is carried out anticipation the need of maintenance for result above, prevent trouble before it happens.
In one embodiment, elevator failure diagnosis device also includes rocking of lift car and detects unit 105, and rocking of described lift car detects unit 105 for gathering the horizontal vibration signal of lift car.In one embodiment, the empirical value of the result and setting of rocking detection unit 105 detection of lift car is compared by master controller 108, and send result to storage and display unit 109,110, when horizontal vibration signal is beyond threshold range, illustrate to lead the horizontal jitter relevant devices such as boots abrasion, guide rail out of plumb abnormal.Leading boots is the parts that can slide between cage guide and car, for instance nylon block, and car can be fixed on guide rail by it, and car may only be moved up and down.Lead boots top and can also have lubricating cup, reduce the frictional force of shoe guide and guide rail.Leading boots abrasion and can cause the horizontal jitter of elevator, the use safety of serious threat elevator, repair and maintenance personnel need to safeguard.Master controller 108 sends alarm signal to alarm unit 111, and notice alarm unit 111 is reported to the police.
In one embodiment, elevator failure diagnosis device also includes floor flat bed detection unit 108, and described floor flat bed detection unit 108 such as measures elevator cabin flat level result by elevator leveling switch and tacho-pulse.In one embodiment, the empirical value of result and setting that elevator floor flat bed is detected unit 108 detection by master controller 108 compares, and master controller 108 sends alarm signal to alarm unit 111, and notice alarm unit 111 is reported to the police.
Elevator failure diagnosis device according to the various embodiment of the application can the position of quick diagnosis elevator faults and problem, it is simple to attendant efficiently solves problem and the safety of protection passenger-in-elevator and equipment;Further, provide alert to not breaking down, reduce the generation of elevator accident.Elevator failure diagnosis device according to various embodiments can be suitable for for the elevator of different vendor, different model, and can be attached on old-fashioned elevator, thus allowing supervision department or third party supervise the running status of elevator better and determine accident responsibility.
Fig. 2 illustrates the flow chart of an embodiment of the Elevator Fault Diagnosis method according to the present invention.Method according to this embodiment can include step s201 and step s202: in step s201, measures the resistance value of lift loop.In step s202, judge the failure condition of lift loop according to the resistance value of lift loop.In one example, step s202 can also include will determine that result is sent to display unit and displays.Pass through above-mentioned steps, it can be determined that the failure condition of lift loop, and carry out the maintenance of elevator for result above in time, improve the safety of elevator, prevent trouble before it happens.
In one embodiment, the lift loop resistance value step of the method detection can include the resistance value of detection elevator door lock loop.The resistance value of elevator door lock loop can be processed, and then judge the failure condition of elevator door lock loop.Such as when loop resistance value infinity, then circuit switching damages, and car cannot run, and prompting repair and maintenance personnel keep in repair;Or when resistance value excessive (but not being open circuit conditions), for instance the reasons such as circuit switching weares and teares, dust is too much cause, prompting repair and maintenance personnel maintain, it is prevented that breaks down.Loop of the door lock resistance can be measured by resistance detection unit by the mode being connected in loop of the door lock when detecting the resistance of loop of the door lock, it is also possible to loop of the door lock resistance is measured by the mode being connected in parallel in loop of the door lock.In one example, for the purpose of for greater safety, adopt when loop of the door lock resistance value is detected and be connected in loop of the door lock mode, and do not select parallel way, it is prevented that measuring unit self damages the short circuit caused.
In one embodiment, the method can also include the vertical speed of service measuring car the vertical speed of service according to the resistance value of elevator door lock loop and described lift car, it is judged that whether elevator belongs to safe operation state.The vertical speed of service of car here can be car or the vertical speed of service jointly doing on the elevator components moved both vertically with car.Such as can detect in car, car outer wall jointly do with car move both vertically drag the vertical speed of service drawing the positions such as system, elevator electrical apparatus control system, elevator guidance system, the rate results in these position measurements can be assumed that it is the vertical speed of service of elevator.In one example, loop of the door lock resistance can be measured by resistance detection unit by the mode being connected in loop of the door lock when detecting the resistance of loop of the door lock.When a certain with door lock shorting stub short circuit loop of the door lock or several switch time, owing to the resistance of shorting stub Yu circuit switching is inconsistent so that resistance detection unit export result different.Such as, the resistance of door interlock switch is R0, the resistance of shorting stub is R1, then threshold value R, a R can be set1≤R≤R0, when the result of loop of the door lock resistance detection unit is less than R, can determine whether the situation that there is short circuit in loop of the door lock;Now need to judge that elevator is in normal maintenance, can pass through here to judge whether elevator is in idling rating, and then judge whether elevator is in safe operation state.In one example, the vertical speed of service detection unit of car can be passed through, the detection current car speed of service in the vertical direction, when cage operation speed is beyond maintenance speed, here (the usually individual very low speed of maintenance speed, show that elevator is in service mode) time, it is possible to result displayed and reports to the police, pointing out maintainer and passenger.
In one embodiment, the lift loop resistance value step of the method detection can include the resistance value of detection elevator safety loop.The resistance value of elevator safety loop can be processed, and then judge the failure condition of elevator safety loop.Such as when loop resistance value infinity, then circuit switching damages, and car cannot run, and prompting repair and maintenance personnel keep in repair;Or when resistance value excessive (but not being open circuit conditions), for instance the reasons such as circuit switching weares and teares, dust is too much cause, prompting repair and maintenance personnel maintain, it is prevented that breaks down.Safety return circuit resistance can be measured by resistance detection unit by the mode being connected in safety return circuit when detecting the resistance of safety return circuit, it is also possible to safety return circuit resistance is measured by the mode being connected in parallel in safety return circuit.In one example, for the purpose of for greater safety, adopt when safety return circuit resistance value is detected and be connected in safety return circuit mode, and do not select parallel way, it is prevented that measuring unit self damages the short circuit caused.
In one embodiment, the method can also include the vertical speed of service measuring car the vertical speed of service according to the resistance value of elevator safety loop and described lift car, it is judged that whether elevator belongs to safe operation state.The vertical speed of service of car here can be car or the vertical speed of service jointly doing on the elevator components moved both vertically with car.Such as can detect in car, car outer wall jointly do with car move both vertically drag the vertical speed of service drawing the positions such as system, elevator electrical apparatus control system, elevator guidance system, the rate results in these position measurements can be assumed that it is the vertical speed of service of elevator.In one example, safety return circuit resistance can be measured by resistance detection unit by the mode being connected in safety return circuit when detecting the resistance of safety return circuit.When a certain with safe shorting stub short circuit safety return circuit or several switch time, owing to the resistance of shorting stub Yu circuit switching is inconsistent so that resistance detection unit export result different.Such as, the resistance of safety switch is R0 *, the resistance of shorting stub is R1 *, then a threshold value R can be set*, R1 *≤R*≤R0 *, when the result of safety return circuit resistance detection unit is less than R*Time, can determine whether the situation that there is short circuit in safety return circuit;Now need to judge that elevator is in normal maintenance, can pass through here to judge whether elevator is in idling rating, and then judge whether elevator is in safe operation state.In one example, the vertical speed of service detection unit of car can be passed through, the detection current car speed of service in the vertical direction, when cage operation speed is beyond maintenance speed, here (the usually individual very low speed of maintenance speed, show that elevator is in service mode) time, it is possible to result displayed and reports to the police, pointing out maintainer and passenger.
In one embodiment; measure the result of the vibration signal of band-type brake action, volume and the frequency of elevator abnormal sound, horizontal vibration signal and floor flat bed signal respectively; and by described result and or result after being computed compare with predetermined threshold value; send alarm signal when signal is beyond threshold value to report to the police; all kinds of situations of elevator remotely can be monitored; Elevator Fault Diagnosis method in this embodiment can the position of quick diagnosis elevator faults and problem, it is simple to attendant efficiently solves problem and the safety of protection passenger-in-elevator and equipment;Further, provide alert to not breaking down, reduce the generation of elevator accident.
It will be understood by those skilled in the art that master controller 108 here can use the mode of software, hardware and/or firmware to realize.Such as, in one embodiment, master controller 108 can be realized by programmed instruction in messaging device, these programmed instruction can be stored in the nonvolatile memory of this messaging device, and makes this messaging device realize corresponding functional device when being performed by one or more processors of this messaging device.These programmed instruction can be contained in be existed with the form such as source code, object code, intermediate code and can with in the executable file of compiling or interpretive mode execution or APP.In another kind of embodiment, master controller 108 can be realized by hard-wired circuit, and functional device therein can be circuit that is separate and that connect, it is also possible to integrate.
It should be noted that, in the claims, word " comprising " or " including " are not precluded from there is the element not arranged in the claims or assembly.Article "a" or "an" before being positioned at element or assembly is also not precluded from the situation that there is multiple such element or assembly.
Furthermore, it should also be noted that the language used in this specification is primarily to purpose that is readable and that instruct and selects, rather than select to explain or limit the theme of the present invention.Therefore, when not necessarily departing from the scope of the appended claims and spirit, many modifications and changes will be apparent from for those skilled in the art.About the scope of the present invention, the description done in description is all illustrative and not restrictive, and it is intended that the scope of the present invention be defined by the claims appended hereto.

Claims (18)

1. an elevator failure diagnosis device, including:
Lift loop detection unit, described lift loop detection unit is for measuring the resistance value of lift loop;And
Master controller, is connected to described lift loop detection unit, for judging the failure condition of lift loop according to the resistance value of lift loop.
2. elevator failure diagnosis device according to claim 1, wherein, described lift loop resistance detection unit is set to serial or parallel connection in lift loop to be detected.
3. elevator failure diagnosis device according to claim 1, wherein, described lift loop resistance detection unit includes elevator door lock loop detection unit, and described elevator door lock loop detection unit is for measuring the resistance value of loop of the door lock.
4. elevator failure diagnosis device according to claim 1, wherein, described lift loop resistance detection unit includes elevator safety loop detection unit, and described elevator safety loop detection unit is for measuring the resistance value of safety return circuit.
5. elevator failure diagnosis device according to claim 2, wherein, described lift loop detection unit is set to be connected in lift loop to be detected.
6. elevator failure diagnosis device according to claim 1, also includes the vertical speed of service detection unit of car, and described car vertical speed of service detection unit is for gathering the vertical speed of service of lift car.
7. elevator failure diagnosis device according to claim 1, wherein, described master controller is additionally operable to the vertical speed of service of the resistance value according to lift loop and described lift car, it is judged that whether elevator belongs to safe operation state.
8. elevator failure diagnosis device according to claim 1, also include following at least one:
Band-type brake runs detection unit, for detecting the vibration signal of band-type brake action;
Rock detection unit, for gathering the horizontal vibration signal of lift car;
Elevator abnormal sound detection unit, for gathering the audio signal that elevator run duration produces;And
Floor flat bed detection unit, is used for measuring elevator cabin flat level result.
9. elevator failure diagnosis device according to claim 1, also includes alarm unit, and for when judged result is beyond when running predetermined threshold value, described master controller sends alarm signal to alarm unit.
10. elevator failure diagnosis device according to claim 1, also includes display unit, and described display unit is for showing the judged result that described master controller exports.
11. an Elevator Fault Diagnosis method, including:
Measure the resistance value of lift loop;And
Resistance value according to lift loop judges the failure condition of lift loop.
12. Elevator Fault Diagnosis method according to claim 11, wherein, the step of the resistance value of described measurement lift loop includes the resistance value measuring elevator door lock loop.
13. Elevator Fault Diagnosis method according to claim 11, wherein, the step of the resistance value of described measurement lift loop includes the resistance value measuring elevator safety loop.
14. Elevator Fault Diagnosis method according to claim 11, wherein, the step of the resistance value of described measurement lift loop includes adopting the resistance value that the mode that detection unit is connected in lift loop is measured lift loop.
15. Elevator Fault Diagnosis method according to claim 11, also include the vertical speed of service gathering lift car.
16. Elevator Fault Diagnosis method according to claim 11, also include the vertical speed of service of the resistance value according to lift loop and described lift car, it is judged that whether elevator belongs to safe operation state.
17. Elevator Fault Diagnosis method according to claim 11, also include the vibration signal of band-type brake action, elevator abnormal sound volume are detected with at least one in frequency, horizontal vibration signal and floor flat bed signal.
18. the Elevator Fault Diagnosis method according to any one in claim 11~17, also include following at least one operation: when judged result is beyond when running predetermined threshold value, report to the police;Described judged result is displayed.
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