CN105366462B - Elevator information monitoring system and its monitoring method - Google Patents
Elevator information monitoring system and its monitoring method Download PDFInfo
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- CN105366462B CN105366462B CN201410536059.2A CN201410536059A CN105366462B CN 105366462 B CN105366462 B CN 105366462B CN 201410536059 A CN201410536059 A CN 201410536059A CN 105366462 B CN105366462 B CN 105366462B
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Abstract
The present invention relates to a kind of elevator information monitoring system, mainly it is made up of acceleration transducer, monitor terminal, server and client side, the acceleration transducer is placed on elevator to be monitored, and its signal output terminates the signal input part of the monitor terminal；The monitor terminal is connected with server communication; server can monitor elevator by the conversion of acceleration signal and whether there is potential safety hazard; and can be to the log of elevator; diagnostic data; fault message is managed collectively; meanwhile, valid data are provided and supported for elevator reparing protection, R＆D and production；Different grades of user can understand corresponding elevator information from client, obtain the security rating of elevator, and client directly can also be connected with monitor terminal, understand the situation in the operation information of elevator at no distant date, Real Time Observation elevator.
Description
Technical field
The present invention relates to a kind of monitoring system and its monitoring method, especially a kind of elevator information monitoring system and its monitoring
Method, belongs to intelligent monitoring technology field.
Background technology
Bus (Bus) is the common communication main line of transmission information between computer various functions part, and it is by wire group
Into transmission wire harness, the information category transmitted according to computer, it is total that the bus of computer can be divided into data/address bus, address
Line and controlling bus, are respectively intended to transmission data, data address and control signal.Bus is a kind of internal structure, it be cpu,
The highway of internal memory, Input/Output Device transmission information, all parts of main frame are connected by bus, and external equipment leads to
Cross corresponding interface circuit again with bus to be connected, so as to form computer hardware system.In computer systems, each portion
The HW highway of information is transmitted between part bus, microcomputer is that each functional part is connected with bus structures.
Current elevator market is very different, and the elevator of a large amount of building, which exists, uses aging, and mechanical breakdown takes place frequently, maintenance staff
The problems such as repairing delayed.When Lift out of order, trapped personnel can only be contacted by phone with the external world, it is impossible to timely rescue
Information is helped, psychological fear is caused.Simultaneously because current video monitoring intellectual inadequacy, it is impossible to which the picture of monitoring is understood,
Some Customer informations are caused to catch in time, the monitoring deficiency to passing in and out elevator personnel.Maintenance staff can only be periodically to electricity
Ladder carries out maintenance, and the diagnostic data to elevator can not record analysis.
According to the applicant understood, the monitoring information collected is generally delivered to client and shown by current elevator monitoring system
Show and preserve, such as Application No. 201010105924.X Chinese invention patent (entitled " elevator monitoring system ").
There is problems with above-mentioned prior art：
To the log of elevator, the event that diagnostic data, fault message ununified analysis and management, and elevator occur
Barrier can not carry out effective Analysis And Evaluation.
The content of the invention
It is an object of the invention to：In view of the above-mentioned problems of the prior art, propose a kind of elevator monitoring system and its
Monitoring method, it is intelligent with height, self investigation can be carried out to the hidden danger that elevator is present, and to the log of elevator,
Diagnostic data, fault message is managed collectively, and is provided valid data for elevator reparing protection, R＆D and production and is supported.
In order to reach object above, a kind of a kind of elevator information monitoring system of the invention, elevator information monitoring system is main
To be made up of acceleration transducer, monitor terminal, server and client side, the acceleration transducer is placed in elevator to be monitored
On, and its signal output terminates the signal input part of the monitor terminal；The monitor terminal is connected with server communication,
The server contains：
Acquisition and storage device：The acceleration at predetermined time interval moment is run to each elevator that acquisition monitoring terminal is transmitted
Degree signal is simultaneously stored；
Build device for mark：To by number is transported according to elevator whole process at the time of the even running stage in each running process of elevator
Number is filled at the time of the even running stage during row, then identical in each running process of elevator after moment number by filling
The average value of the acceleration signal at moment is as the moment corresponding normal acceleration value, and by each predetermined time interval moment pair
The normal acceleration value smooth curve connection answered is fitted to the curve of normal acceleration；
Comparison means：This elevator acquisition and storage device to be gathered in real time runs the acceleration signal point at each moment
The acceleration magnitude at moment not corresponding with the curve of normal acceleration is compared, when the absolute value of its difference is less than predetermined threshold
When, continue to gather and be compared again in real time；When the absolute value of its difference is more than or equal to predetermined threshold, starts and send dress
Put；
Dispensing device：Comparative result is sent to client.
The acceleration signal collected is sent to server, the collection of server by acceleration transducer by monitor terminal
The acceleration signal that storage device is transmitted to monitor terminal is carried out after gathering and storing in real time, by building device for mark, comparing dress
Analysis is put to judge；The data analyzed are sent to client again.
The present invention preferred scheme be：Comparison means is while continuing to gather and be compared again in real time, and startup is built
Device for mark, the acceleration signal superposition corresponding with the average value of original acceleration signal that this described elevator is run into each moment,
Again fit standard accelerating curve.It is easy to the curve of constantly revised standard acceleration, the curve is tended to after break-in operation
The ideal curve that elevator is normally run.
Preferably, build device for mark and pass through functionObtain each predetermined time interval brief acceleration signal
Average value (aiFor i-th point in n moment point of acceleration, unit is m/s2, M is the total number for setting up coordinate).
Preferably, the even running stage is the elevator same acceleration that the continuous predetermined instant point of acquisition and storage device is collected
The stage of signal.Avoid because elevator to reach the time used in different floors different, caused by each moment point acceleration exist it is poor
Different the problem of.
It is highly preferred that comparison means passes through function ei=ai-fs(ai, the elevator of this collection n) is run into adding for each moment
Rate signal respectively the moment corresponding with the curve of normal acceleration acceleration magnitude carry out difference comparsion, obtained by comparing as difference
Each moment point acceleration is taken to whether there is difference, wherein, aiThe acceleration signal at each moment is run for the elevator of collection, unit is
m/s2, fs(ai, it is n) acceleration magnitude at correspondence moment on the curve of normal acceleration, unit is m/s2, it is secondary at the time of n is collection
Number.
The threshold values e of comparison means is 0, and when comparing difference less than threshold values, this is run acceleration signal by comparison means
With standard value progress recurrence adjustment, Precision criterion value, when comparing difference more than threshold values, comparison means transmits data to client
End.
Preferably, in addition to differential analysis device：To travel through all differences, quick absolute value of searching more than or equal to predetermined
The difference of threshold values, the differential analysis device uses Hear wavelet analysis methods, and small echo form isAdopt
Basic function isWherein t is the time segment length of sampling instant, and unit is ms, and j is wavelength, k
For the position of sampling, pass throughWavelet transformation amplification is carried out to difference, wherein, enFor
The difference of the acceleration magnitude at sampling instant elevator operation acceleration moment corresponding with the curve of normal acceleration, n is collection
Moment number of times.
Preferably, monitor terminal is connected by CAN with electric life controller, and CAN is to by electric life controller
Diagnostic message is transferred to the monitor terminal by SAEJ1939 message format, and the monitor terminal preserves electric life controller
The server is sent to by GPRS timings after diagnostic message, server can obtain every service data in elevator operation.
Preferably, monitor terminal is broadcast by the video monitoring camera, LCD display, audio of usb bus and elevator interior
Put device and microphone connection.
A kind of method that elevator information monitoring system is monitored, mainly by acceleration transducer, monitor terminal, service
In the system that device and client are constituted, the acceleration transducer is placed on elevator to be monitored, and its signal output termination institute
State the signal input part of monitor terminal；The monitor terminal is connected with server communication, it is characterised in that the server
Run following steps：
The first step, collection storing step：Each elevator operation predetermined time interval moment that acquisition monitoring terminal is transmitted
Acceleration signal is simultaneously stored；
Second step, build mark step：By number is complete according to elevator at the time of the even running stage in each running process of elevator
Number is filled at the time of the even running stage in journey running, then will be filled in each running process of elevator after moment number
Mutually the average value of acceleration signal in the same time is as the moment corresponding normal acceleration value, and during by each predetermined time interval
Carve the curve that corresponding normal acceleration value smooth curve connection is fitted to normal acceleration；
3rd step, comparison step：The acceleration signal that the elevator of this collection is run into each moment accelerates with standard respectively
The acceleration magnitude at correspondence moment is compared on the curve of degree, when the absolute value of its difference is less than predetermined threshold, returns to second
Step；When the absolute value of its difference is more than or equal to predetermined threshold, next step is carried out；
4th step, forwarding step：Comparative result is sent to client.
Preferably, comparison step is while continuing to gather and be compared again in real time, and mark step is built in return, will be described
This elevator runs the acceleration signal superposition corresponding with the average value of original acceleration signal at each moment, and fit standard adds again
Rate curve.
The present invention has the beneficial effect that：Real-time Intellectualized monitoring is carried out to elevator, server can pass through acceleration signal
Conversion monitoring elevator whether there is potential safety hazard, and the log of elevator, diagnostic data, fault message can be carried out
Unified management, meanwhile, valid data are provided and supported for elevator reparing protection, R＆D and production；Different grades of user can be from visitor
Family end understands corresponding elevator information, obtains the security rating of elevator, and client directly can also be connected with monitor terminal, understands
The operation information of elevator, when elevator breaks down, can be connected, Real Time Observation by monitor terminal with video device at no distant date
Situation in elevator.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is hardware architecture diagram of the invention.
Fig. 2 is software flow pattern of the invention
Fig. 3 is the form schematic diagram that CAN terminals of the present invention send data.
Fig. 4 is that elevator of the present invention normally runs each stage schematic diagram.
Fig. 5 is elevator faults curve synoptic diagram of the present invention.
Fig. 6 is elevator normal operation brief acceleration difference curve figure of the present invention.
Fig. 7 is that elevator of the present invention has hidden danger brief acceleration difference curve figure.
Embodiment
Embodiment one
A kind of elevator information monitoring system of the present embodiment as depicted in figs. 1 and 2, mainly by acceleration transducer 4, monitoring
Terminal 2, server 1 and client 3 are constituted, and the acceleration transducer 4 is placed on elevator to be monitored, and its signal output part
Connect the signal input part of the monitor terminal 2；The monitor terminal 2 is communicated with the server 1 by wifi, bluetooth, 3G/4G
Mode is connected, and the server 2 contains：
Acquisition and storage device：The acceleration at predetermined time interval moment is run to each elevator that acquisition monitoring terminal is transmitted
Degree signal is simultaneously stored；
Build device for mark：The acceleration signal of each running process of elevator is divided into boost phase T1, even running rank
Section T2 and deceleration Restoration stage T3, as shown in figure 4, and by each running process of elevator at the time of the even running stage it is several
According to number is filled at the time of the even running stage in the whole running of elevator, then the fortune of each elevator after moment number will be filled
Mutually the average value of acceleration signal in the same time is as the moment corresponding normal acceleration value during row, and by each pre- timing
Between the corresponding normal acceleration value smooth curve connection of interval moment be fitted to the curve of normal acceleration；
Comparison means：The acceleration signal that elevator will gather acquisition and storage device in real time runs each moment is distinguished
The acceleration magnitude at moment corresponding with the curve of normal acceleration is compared, when the absolute value of its difference is less than predetermined threshold
When, device for mark is built in startup；When the absolute value of its difference is more than or equal to predetermined threshold, start dispensing device；
Dispensing device：Comparative result is sent to client.
The acceleration signal collected is sent to server, the collection of server by acceleration transducer by monitor terminal
The acceleration signal that storage device is transmitted to monitor terminal is carried out after gathering and storing in real time, by building device for mark, comparing dress
Analysis is put to judge；The data analyzed are sent to client again.
Comparison means is while continuing to gather and be compared again in real time, and device for mark is built in startup, will this described electricity
The acceleration signal superposition corresponding with the average value of original acceleration signal at ladder operation each moment, again fit standard acceleration is write music
Line.It is easy to the curve of constantly revised standard acceleration, the curve is tended to the ideal that elevator is normally run after break-in operation bent
Line.
Build device for mark and pass through functionObtain the average value of each predetermined time interval brief acceleration signal
(aiFor i-th point in n moment point of acceleration, unit is m/s2, M is the total number for setting up coordinate).
The even running stage is the elevator acceleration signal identical that the continuous predetermined instant point of acquisition and storage device is collected
Stage.Avoid because elevator is reached that the time used in different floors is different, caused by asking of having differences of each moment point acceleration
Topic.
Comparison means passes through function ei=ai-fs(ai, the elevator of this collection n) is run to the acceleration signal at each moment
The acceleration magnitude at moment corresponding with the curve of normal acceleration carries out difference comparsion respectively, by comparing acquisition each moment as difference
Point acceleration whether there is difference, wherein, aiThe acceleration signal at each moment is run for the elevator of collection, unit is m/s2, fs
(ai, it is n) acceleration magnitude at correspondence moment on the curve of normal acceleration, unit is m/s2, number of times at the time of n is collection.
The threshold values e of comparison means is 0, and when comparing difference less than threshold values, this is run acceleration signal by comparison means
With standard value progress recurrence adjustment, Precision criterion value, when comparing difference more than threshold values, comparison means transmits data to client
End.
Also include differential analysis device：It is more than or equal to reservation threshold to travel through all differences, quick absolute value of searching
Difference, the differential analysis device uses Hear wavelet analysis methods, and small echo form isThe base of use
Function isWherein t is the time segment length of sampling instant, and unit is ms, and j is wavelength, and k is sampling
Position, pass throughWavelet transformation amplification is carried out to difference, wherein, enDuring for sampling
The difference of the acceleration magnitude at elevator operation acceleration moment corresponding with the curve of normal acceleration is carved, it is secondary at the time of n is collection
Number.
Monitor terminal 2 is connected by CAN 6 with electric life controller 5, and CAN 6 is to examining electric life controller 5
Disconnected information is transferred to the monitor terminal by SAEJ1939 message format, and the monitor terminal preserves electric life controller 5
The server is sent to by GPRS timings after diagnostic message, server can obtain every service data in elevator operation.
Video monitoring camera, LCD display 7, audio player that monitor terminal 2 passes through usb bus and elevator interior
With microphone connection.
Monitor terminal, which also has, is based on Android platform, with WIFI, bluetooth and 3G/4G communication functions.
Gravity accelerometer 4 is connected with monitor terminal 2 by bus.
Client the monitor terminal is connected by the Bluetooth transmission with obtain elevator interior video monitoring camera,
The information of LCD display, audio player and microphone transmission.
A kind of method that elevator information monitoring system is monitored, as illustrated, mainly by acceleration transducer, monitoring
In the system that terminal, server and client side are constituted, the acceleration transducer is placed on elevator to be monitored, and its signal is defeated
Go out the signal input part for terminating the monitor terminal；The monitor terminal is connected with server communication, it is characterised in that institute
State server operation following steps：
The first step, collection storing step：Each elevator operation predetermined time interval moment that acquisition monitoring terminal is transmitted
Acceleration signal is simultaneously stored；
Second step, build mark step：The acceleration signal of each running process of elevator is divided into boost phase T1, it is steady
Operation phase T2 and deceleration Restoration stage T3, as shown in figure 4, and by each running process of elevator at the time of the even running stage
Number is according to number is filled at the time of the even running stage in the whole running of elevator, then will fill each time after moment number
Acceleration signal in running process of elevator mutually in the same time passes through function(aiFor i-th point in n moment point
Acceleration, unit is m/s2) average value of the moment acceleration signal is obtained as the moment corresponding normal acceleration value,
And the corresponding normal acceleration value smooth curve connection of each predetermined time interval moment is fitted to the curve of normal acceleration；
3rd step, comparison step：The acceleration signal that the elevator of this collection is run into each moment accelerates with standard respectively
The acceleration magnitude at correspondence moment passes through function e on the curve of degreei=ai-fs(ai, n) it is compared, when the absolute value of its difference is small
When predetermined threshold e=0, after this acceleration signal deposit database, second step is returned to；When the absolute value of its difference is more than
During equal to predetermined threshold e=0, after this acceleration signal deposit database, next step is carried out；
4th step, forwarding step：Continue to monitor after storing if comparative result is sporadic failure, if comparative result is normal
Hair property failure (identical result occurs more than three times) then notifies system alarm taken in conjunction maintenance staff, finally sends comparative result
To client.
Comparison step includes differential analysis：It is more than or equal to predetermined valve to travel through all differences, quick absolute value of searching
The difference of value, the differential analysis uses Hear wavelet analysis methods, and small echo form isThe base of use
Function isPass throughWavelet transformation is carried out to difference to put
Greatly, so as to faster, more accurately find out absolute value be more than or equal to predetermined threshold difference.
Comparison step is while continuing to gather and be compared again in real time, and mark step is built in return, will this described electricity
The acceleration signal superposition corresponding with the average value of original acceleration signal at ladder operation each moment, again fit standard acceleration is write music
Line.
As shown in figure 5, curve a be elevator usually or when traveling at the uniform speed, acceleration of gravity is g (=9.8m/s2), is risen
When, acceleration becomes big, and when will reach purpose floor, acceleration diminishes, and then gradually recovers normal.Curve b is when elevator
When unconspicuous change occurs for somewhere, the hidden danger of failure is often produced, now the acceleration of elevator can deviate normal value.
The acceleration that server 1 runs this elevator is compared with acceleration standard value, when elevator is normally run
As shown in fig. 6, e value should be 0 or so, when elevator has hidden danger, such as car is collided with the door tip, or the sudden shake of motor,
As shown in fig. 7, e value has a spike situation.
SAEJ1939 message format is as shown in figure 3, using 29 indications allocation tables, wherein priority, which is 3, can 8
Individual priority；R and DP are typically fixed as 0；The PF of 8 is the code of message；The PS of 8 is destination address or group extension；8
SA is the source address for sending this message.Response message is fixed as 8 bytes.
Message 1
Message 2
Message 3
Server is received after these data, by data storage, then carries out data analysis, the elevator information form of storage：
| Elevator project | Implication |
| Numbering of elevator | No. ID to each allocation of elevators |
| Elevator installation site | Record the building object location that elevator is loaded, gps coordinate |
| Installed date | The date that record elevator is installed and put into operation |
| The number of plies | The building number of plies |
| Elevator maintenance company and director | The information of director |
The routine diagnosis information of elevator can periodically issue central server, and central server can record these information to data
In storehouse, elevator faults information form：
Server statistics sort out elevator operation information, by the elevator plant code fact of storage, safeguard guarantee company code
The functional relation that Qos, failure code N_fail and out of order time t pass through tries to achieve the out of order number of times f of elevator：
F=f (fact, N_fail, Qos, t)；
Count the respective elevator sum N of each manufacturerfact, server passes through function
Obtain the elevator faults ratio of each manufacturer, wherein NfactIt is the elevator sum of the said firm.ffactRatio it is lower, then should
The credit rating of manufacturer is higher；
Count each and safeguard the responsible elevator sum N of guarantee companyQos, pass through function
Obtain the failure ratio of each maintenance protection company, fQosRatio it is lower, then the maintenance guarantee company credit rating it is higher；
Server 1 is by above-mentioned data by transmitting to mobile phone A PP clients 3, and being set by user class can read and make
Data volume, technical supervising department grade can carry out judgement tracking, maintenance department etc. to the operation information of local all elevators
Level can be tracked to be responsible for elevator running situation, and domestic consumer's grade can inquire about security rating and the reservation of elevator
Elevator service.
Advantage of this embodiment is that carrying out real-time Intellectualized monitoring to elevator, server can pass through acceleration signal
Conversion monitoring elevator whether there is potential safety hazard, and to the log of elevator, diagnostic data, fault message carries out unified pipe
Reason, meanwhile, valid data are provided and supported for elevator reparing protection, R＆D and production；Different grades of user can be from client
Corresponding elevator information is solved, the security rating of elevator is obtained, client directly can also be connected with monitor terminal, is understood at no distant date
The operation information of elevator, when elevator breaks down, can be connected, in Real Time Observation elevator by monitor terminal with video device
Situation.
In addition to the implementation, the present invention can also have other embodiment.All use equivalent substitution or equivalent transformation shape
Into technical scheme, all fall within the protection domain of the utility model requirement.
Claims (10)
1. a kind of elevator information monitoring system, is mainly made up of acceleration transducer, monitor terminal, server and client side, institute
Acceleration transducer is stated to be placed on elevator to be monitored, and its signal output terminates the signal input part of the monitor terminal；Institute
State monitor terminal to be connected with server communication, it is characterised in that the server contains：
Acquisition and storage device：The acceleration letter at each elevator operation predetermined time interval moment transmitted to acquisition monitoring terminal
Number and store；
Build device for mark：To by number was run according to elevator whole process at the time of the even running stage in each running process of elevator
Number is filled at the time of the even running stage in journey, then will be filled in each running process of elevator after moment number mutually in the same time
Acceleration signal average value as the moment corresponding normal acceleration value, it is and each predetermined time interval moment is corresponding
Normal acceleration value smooth curve connects the curve for being fitted to normal acceleration；
Comparison means：This elevator acquisition and storage device to be gathered in real time run the acceleration signal at each moment respectively with
The acceleration magnitude at correspondence moment is compared on the curve of normal acceleration, when the absolute value of its difference is less than predetermined threshold,
Continue to gather and be compared again in real time；When the absolute value of its difference is more than or equal to predetermined threshold, start dispensing device；
Dispensing device：Comparative result is sent to client.
2. elevator information monitoring system according to claim 1, it is characterised in that：The comparison means is continuing to adopt in real time
While collecting and be compared again, device for mark is built in startup, and this described elevator is run to the acceleration signal and original at each moment
The average value correspondence for having acceleration signal is superimposed, again fit standard accelerating curve.
3. elevator information monitoring system according to claim 1, it is characterised in that：The device for mark of building passes through functionObtain the average value of each predetermined time interval brief acceleration signal（a i For in n moment point i-th point plus
Speed, unit is m/s2）.
4. elevator information monitoring system according to claim 1, it is characterised in that：The even running stage adopts to be described
The stage for the elevator same acceleration signal that the collection continuous predetermined instant point of storage device is collected.
5. elevator information monitoring system according to claim 1, it is characterised in that：The comparison means passes through functionBy elevator of this collection run the acceleration signal at each moment respectively with the curve of normal acceleration
The acceleration magnitude at correspondence moment carries out difference comparsion.
6. elevator information monitoring system according to claim 1, it is characterised in that：Also include differential analysis device：It is used to
Travel through all differences, quick lookup absolute value and be more than or equal to the difference of reservation threshold, the differential analysis device is small using Hear
Wave analysis method, small echo form is, the basic function used for, pass throughWavelet transformation amplification is carried out to difference.
7. elevator information monitoring system according to claim 1, it is characterised in that：The monitor terminal passes through CAN
It is connected with electric life controller, the CAN is to the diagnostic message of electric life controller is passed through into SAEJ1939 message format
The monitor terminal is transferred to, the monitor terminal is sent to institute after preserving the diagnostic message of electric life controller by GPRS timings
State server.
8. the elevator information monitoring system according to claim 1 or 7, it is characterised in that：The monitor terminal is total by USB
Video monitoring camera, LCD display, audio player and the microphone connection of line and elevator interior.
9. a kind of method that elevator information monitoring system is monitored, mainly by acceleration transducer, monitor terminal, server
In the system constituted with client, the acceleration transducer is placed on elevator to be monitored, and its signal output termination is described
The signal input part of monitor terminal；The monitor terminal is connected with server communication, it is characterised in that the server fortune
Row following steps：
The first step, collection storing step：Each elevator that acquisition monitoring terminal is transmitted runs the acceleration at predetermined time interval moment
Degree signal is simultaneously stored；
Second step, build mark step：By number is transported according to elevator whole process at the time of the even running stage in each running process of elevator
Number is filled at the time of the even running stage during row, then identical in each running process of elevator after moment number by filling
The average value of the acceleration signal at moment is as the moment corresponding normal acceleration value, and by each predetermined time interval moment pair
The normal acceleration value smooth curve connection answered is fitted to the curve of normal acceleration；
3rd step, comparison step：By the elevator gathered in real time run the acceleration signal at each moment respectively with normal acceleration
The acceleration magnitude at correspondence moment is compared on curve, when the absolute value of its difference is less than predetermined threshold, returns to second step；When
When the absolute value of its difference is more than or equal to predetermined threshold, next step is carried out；
4th step, forwarding step：Comparative result is sent to client.
10. the method for elevator information monitoring according to claim 9, it is characterised in that the comparison step is continuing real
When gather and while be compared again, mark step is built in return, by the acceleration signal at this described elevator operation each moment
Superposition corresponding with the average value of original acceleration signal, again fit standard accelerating curve.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105905718A (en) * | 2016-06-16 | 2016-08-31 | 唐山奥特机电设备有限公司 | Elevator safety system utilizing WeChat in mobile phone to inquire |
| CN109019216B (en) * | 2018-09-27 | 2020-04-17 | 上海昶屹机电科技有限公司 | Intelligent diagnosis system and method for elevator faults |
| US11993480B2 (en) * | 2019-04-30 | 2024-05-28 | Otis Elevator Company | Elevator shaft distributed health level with mechanic feed back condition based monitoring |
| CN110342363B (en) * | 2019-07-15 | 2020-09-22 | 王思存 | Method and device for testing safety performance of elevator, terminal equipment and storage medium |
| CN111170103B (en) * | 2019-12-27 | 2021-07-20 | 猫岐智能科技（上海）有限公司 | Equipment fault identification method |
| CN111332895A (en) * | 2020-03-09 | 2020-06-26 | 南通润雅机电科技有限公司 | Remote monitoring system and method for elevator operation fault |
| CN113734929B (en) * | 2021-09-17 | 2023-05-05 | 猫岐智能科技（上海）有限公司 | Continuous elevator running acceleration data acquisition system and method |
| CN114291676B (en) * | 2021-12-08 | 2024-01-02 | 杭州优迈科技有限公司 | Elevator general logic analysis method, device, system, equipment and storage medium |
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| DE4217587C1 (en) * | 1992-05-21 | 1993-06-17 | Ernst Dipl.-Ing. 3300 Braunschweig De Kasten | Diagnosis system for checking lift or conveyor safety - tests braking and emergency blocking systems under simulated loading conditions and records acceleration characteristic |
| CN103231962A (en) * | 2013-05-15 | 2013-08-07 | 北京晶科华盛科技有限公司 | Diagnosis and early-warning system for elevator faults |
| CN203624748U (en) * | 2013-11-18 | 2014-06-04 | 重庆和航科技股份有限公司 | Lift car falling monitoring device |
| CN103771211A (en) * | 2014-02-21 | 2014-05-07 | 成都烽火源信息技术有限公司 | Elevator monitoring system based on Internet of Things |
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