CN103922208B - A kind of safety monitoring system of car elevator and its monitoring method - Google Patents
A kind of safety monitoring system of car elevator and its monitoring method Download PDFInfo
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Abstract
The present invention relates to a kind of safety monitoring system of car elevator and its monitoring method, four edges of elevator bottom are respectively equipped with one group of weight sensor, every group of weight sensor is connected with the signal input part of the first judge module respectively, first signal output part of the first judge module connects alarm module, and controls connection motor control terminal by control module；The secondary signal outfan of the first judge module connects the signal input part of the first computing module, and the signal output part of the first computing module connects to the first signal input part of the second judge module；The secondary signal input of the second judge module is connected with current sensor, and current sensor accesses a phase of motor between power supply and motor, and the signal output part of the second judge module is connected with alarm module, and controls connection motor control terminal by control module.The present invention carries out security monitoring to car elevator running, according to data, judges equipment working condition and operation conditions, safer, accurate, reliable.
Description
[technical field]
The present invention relates to a kind of safety monitoring system of car elevator and its monitoring method, realize to automobile specified
The operating mode of elevator and running status are monitored, and belong to car elevator security monitoring field.
[background technology]
With the increase of automobile pollution, the car elevator for realizing the carrying of automotive vertical direction obtains more next
More widely use.At present, lack to car elevator reliable and effective monitoring.To car elevator running
Carry out security monitoring, according to security monitoring data, judge equipment working condition and operation conditions, improve what car elevator used
Reliability and safety.
[content of the invention]
It is an object of the invention to overcoming technical problem present in prior art, provide a kind of safe and accurate, reliable
Car elevator safety monitoring system, solves the problems, such as the security monitoring of car elevator running.
For achieving the above object, design a kind of safety monitoring system of car elevator it is characterised in that including vapour
Car weight amount supervising device and current of electric supervising device, described vehicle weight supervising device and current of electric supervising device are by weight
Sensor, current sensor, the first computing module, first/second judge module, alarm module and control module are constituted, its
Electric current when middle current sensor obtains motor work, weight sensor obtains carrier and gets on the car weight, and the four of elevator bottom
Edge is respectively equipped with one group of weight sensor, and every group of weight sensor passes through the signal of holding wire and the first judge module respectively
Input is connected, and the first signal output part of the first judge module connects alarm module, and controls connection electricity by control module
Machine control end；The secondary signal outfan of the first judge module connects the signal input part of the first computing module by holding wire,
The signal output part of described first computing module connects to the first signal input part of the second judge module；Second judge module
Secondary signal input is connected with current sensor by holding wire, and described current sensor accesses a phase of motor, located at electricity
Between source and motor, the signal output part of described second judge module is connected with alarm module, and is controlled even by control module
Connect motor control terminal.Prevent lifter excess load, weight data is used for calculating current of electric, current sensor data compares therewith,
Judge motor whether fault.
Described safety monitoring system is additionally provided with the direction of motion and rotational speed measuring device, described direction of motion supervising device by turn
Fast sensor, displacement transducer, the second computing module, the 3rd judge module, alarm module and control module are constituted, described turn
Fast sensor between motor output shaft and power transmission shaft, for direction of rotation and rotating speed, revolution speed sensing when obtaining motor work
Device connects the signal input part of the second computing module by holding wire, and the signal output part of the second computing module connects the 3rd judgement
First signal input part of module, the secondary signal input of the 3rd judge module connects displacement transducer by holding wire, rises
Fall machine is provided with steel wire rope fixing point, and described steel wire rope fixing point is fixed one end of steel wire rope, and the other end of steel wire rope passes through
Fixed pulley connects institute's displacement sensors, and displacement transducer is used for obtaining carrier traffic direction and speed；3rd judge module
Signal output part be connected with alarm module, and by control module control connect motor control terminal.Speed probe obtains
Direction of rotation and rotating speed are used for calculating elevator motion direction and speed, and the numerical value being monitored with displacement transducer is compared,
Judge transmission link between motor and elevator whether fault.
Described safety monitoring system is additionally provided with gradient supervising device, described gradient supervising device by electrolevel,
4th judge module, alarm module and control module, described electrolevel is close to elevator bottom and is set up, and removes for obtaining
Fortune device levelness, judges whether elevator tilts, and described electrolevel connects the signal of the 4th judge module by holding wire
Input, the signal output part of described 4th judge module is connected with alarm module, and controls connection motor by control module
Control end.
Described safety monitoring system is additionally provided with motor temperature supervising device, and described motor temperature supervising device is by temperature sensing
Device, the 5th judge module, alarm module and control module are constituted, and described temperature sensor is located at the driving end of motor, temperature
Sensor connects the signal input part of the 5th judge module, the signal output part of the 5th judge module and warning mould by holding wire
Block connects, and controls connection motor control terminal by control module.
Described safety monitoring system is additionally provided with work total time and cycle of operation number of times supervising device, described work total time
With cycle of operation number of times supervising device by supply voltage sensor, stop be spacing or photoswitch, the 3rd computing module, the 4th fortune
Calculate module, the 6th judge module, the 7th judge module, alarm module and control module to constitute, described supply voltage sensor
Between power supply and motor, and it is connected with the signal input part of the 3rd computing module, the signal output part of the 3rd computing module
Connect the 6th judge module signal input part, the 6th judge module signal output part is connected with alarm module, and by controlling mould
Block controls connection motor control terminal；Described spacing or photoswitch carries for elevator, and defeated with the signal of the 4th computing module
Enter end to be connected, the signal output part of described 4th computing module connects the 7th judge module signal input part, described and warning mould
Block connects, and controls connection motor control terminal by control module.
The monitoring method of the safety monitoring system of above-mentioned car elevator is it is characterised in that include vehicle weight and electricity
Dynamo-electric flow monitoring method, is made up of the following step：
A. the vehicle weight in monitoring elevator：Bearing automobile on the loading end of elevator, four corners of elevator bottom
Place is respectively equipped with one group of weight sensor, and for monitoring the vehicle weight of each monitoring point, every group of weight sensor leads to respectively
The signal input part crossing holding wire with the first judge module is connected, and the first judge module calculates and obtains vehicle weight value, and judges
Whether described vehicle weight value exceedes rated weight；
If b. institute's bearing automobile gravimetric value exceedes rated load, the first judge module is by signal via the first signal output
To alarm module, now alarm module conducting, sends alarm signal for end output, and further uploads fault message to controlling mould
Block, and connection motor control terminal is controlled by control module, leave the motor off；
If c. institute's bearing automobile gravimetric value is not less than rated load, the first judge module is by vehicle weight value via second
Signal output part exports to the signal input part of the first computing module, corresponding difference vehicle weight value, tool in the first computing module
There is the corresponding table of vehicle weight motor current value, the corresponding current value of table lookup being passed through according to vehicle weight value, if not having
Corresponding current value, then be calculated calculating current value by linear interpolation, transmits defeated to the first signal of the second judge module
Enter end；
D. monitoring current value is transmitted to the secondary signal input of the second judge module by described current sensor, and second sentences
Error amount between the monitoring current receiving value and calculating current value is compared by disconnected module with error permissible value；
| monitor value-the value of calculation |/value of calculation if e.>Permissible value △, then the second judge module by signal via signal output
To alarm module, now alarm module conducting, sends alarm signal for end output, and further uploads fault message to controlling mould
Block, and connection motor control terminal is controlled by control module, leave the motor off；
| monitor value-the value of calculation |/value of calculation ＜ permissible value △ if f.；If illustrating that motor is working properly.
Above-mentioned monitoring method also includes gradient monitoring method, and described electrolevel is close to elevator bottom and is set up, and uses
In the tilting value of monitoring elevator, electrolevel transmits described tilting value to the 4th judge module, and the 4th judge module will
Described tilting value and setting are compared, if tilting value exceedes setting, the 4th judge module is by signal via signal output
To alarm module, now alarm module conducting, sends alarm signal for end output, and further uploads fault message to controlling mould
Block, and connection motor control terminal is controlled by control module, leave the motor off.
Above-mentioned monitoring method also includes the direction of motion and monitor speed method, and described speed probe is used for monitoring motor and turns
Speed and direction of rotation data, and by above-mentioned data transfer to the second computing module, the second computing module by motor speed and
Direction of rotation computing is converted into the direction of motion and the speed of elevator, and transmits to the 3rd judge module, and the 3rd judge module will
The direction of motion of elevator that the direction of motion of the elevator calculating and speed are monitored with displacement transducer and speed are carried out
Compare, if the direction of motion is inconsistent or velocity deviation exceedes setting, the 3rd judge module is by signal via signal output part
Export to alarm module, now alarm module conducting, sends alarm signal, and further upload fault message to control module,
And connection motor control terminal is controlled by control module, leave the motor off.
Above-mentioned monitoring method also includes motor temperature monitoring method, temperature sensor by the motor temperature monitoring transmit to
5th judge module, the motor temperature monitoring and permissible value are compared by the 5th judge module, if two values are inconsistent or inclined
Difference exceedes setting, then signal is exported to alarm module by the 5th judge module via signal output part, and now alarm module is led
Logical, send alarm signal, and further upload fault message to control module, and connection motor control is controlled by control module
End, leaves the motor off.
Above-mentioned monitoring method also includes work total time and cycle of operation number of times monitoring method, is made up of the following step：Work
Make total time and cycle of operation number of times supervising device passes through supply voltage Sensor monitoring power supply voltage signal, if equipment energising,
Computing module added up to conduction time, obtained work total time；Computing module adds up spacing or photoswitch work time
Number, takes each spacing or photoswitch work times maximum m, cycle of operation frequency n=m/2, if spacing or photoswitch
Work times>Setting value N, then illustrate that this is spacing or photoswitch is in inefficacy critical state, system prompt should change spacing opening
Close or photoswitch；By total time and the cycle of operation number of times of working, calculate the time interval between cycle of operation twice, if two
Time interval t between task circulation>Setting value T, then explanation elevator standby time is longer, and system prompt reply elevator is complete
Face reuses after checking；By total time and the cycle of operation number of times of working, calculate lifting work circulation time in nearest 200 hours
Number, obtains usage frequency f=n time/200 hours, if usage frequency f>Setting value F, then explanation elevator usage frequency is too high, is
Unite and propose warning to user.
The present invention carries out security monitoring to car elevator running, according to security monitoring data, judges equipment
Operating mode and operation conditions, improve reliability and the safety that car elevator uses, there is provided a kind of safe and accurate, can
The car elevator safety monitoring system leaning on.
[brief description]
Fig. 1 is elevator upward view
Fig. 2 is lifting side view
Fig. 3 is current sensor scheme of installation
Fig. 4 is voltage sensor arrangement schematic diagram
Fig. 5 arranges schematic diagram for speed probe
Fig. 6 is the safety monitoring system schematic diagram of car elevator of the present invention；
In figure 1 elevator body, 2 electrolevel, 3 displacement transducer, 4 fixed pulley, 5 steel wire rope, 6 monitoring weight device 7 power supply
8 current sensor, 9 motor, 10 speed probe, 11 power transmission shaft 12 voltage sensor.
[specific embodiment]
In conjunction with drawings and Examples, technical scheme is further elaborated it is believed that to those skilled in the art
For be clearly.
Embodiment
The safety monitoring system of the car elevator in the present embodiment, as shown in figure 1, include vehicle weight monitoring dress
Put, current of electric supervising device, the direction of motion and rotational speed measuring device, gradient supervising device, motor temperature supervising device, work
Make total time and cycle of operation number of times supervising device.Split below illustrates：
A vehicle weight supervising device and current of electric supervising device
This vehicle weight supervising device and current of electric supervising device are by weight sensor, current sensor, the first computing
Module, first/second judge module, alarm module and control module are constituted, and four edges of elevator bottom are respectively equipped with
One group of weight sensor, every group of weight sensor is connected with the signal input part of the first judge module by holding wire respectively, the
First signal output part of one judge module connects alarm module, and controls connection motor control terminal by control module；First
The secondary signal outfan of judge module connects the signal input part of the first computing module, described first computing mould by holding wire
The signal output part of block connects to the first signal input part of the second judge module；The secondary signal input of the second judge module
It is connected with AC current sensor by holding wire, incoming transport current sensor in a phase of three phase alternating current motor, located at electricity
Between source and motor；The signal output part of described second judge module is connected with alarm module, and is controlled even by control module
Connect motor control terminal.
A. the vehicle weight in monitoring elevator：Bearing automobile on the loading end of elevator, four corners of elevator bottom
Place is respectively equipped with one group of weight sensor, and for monitoring the vehicle weight of each monitoring point, every group of weight sensor leads to respectively
The signal input part crossing holding wire with the first judge module is connected, and the first judge module calculates and obtains vehicle weight value, and judges
Whether described vehicle weight value exceedes rated weight；
If b. institute's bearing automobile gravimetric value exceedes rated load, such as car elevator rated load weight is 2 tons, when entering
The vehicle weight entering elevator is 2.2 ton hours, then signal is exported to warning by the first judge module via the first signal output part
Module, now alarm module conducting, sends alarm signal, and further uploads fault message to control module, and by controlling
Module controls connection motor control terminal, leaves the motor off；
If c. institute's bearing automobile gravimetric value is not less than rated load, such as car elevator rated load weight is 2 tons, when
The vehicle weight entering elevator is 2.2 ton hours, when the vehicle weight entering elevator is 1.6 ton hours, elevator normal work.
Now the first judge module exports vehicle weight value (1.6 tons) to the signal of the first computing module via secondary signal outfan
Input, in the first computing module, corresponding different loads, have the corresponding table of vehicle weight motor current value, according to automobile weight
Value passes through the corresponding current value of table lookup, if not having corresponding current value, is calculated calculating electricity by linear interpolation
Flow valuve, transmits to the first signal input part of the second judge module, if elevator rises, monitoring system is by being calculated liter
When fall machine rises, motor current value is 10 amperes；
D. current sensor starts monitor in real time motor current values, if monitoring startup stage motor current value (such as 16
Ampere) exceed maximum motor permission maximum (as 15 amperes), illustrate that motor operation is abnormal, system alarm, equipment stops；Described
Monitoring current value is transmitted to the secondary signal input of the second judge module by current sensor, and the second judge module will receive
Monitoring current value and calculating current value between error amount be compared with error permissible value；
| monitor value-the value of calculation |/value of calculation if e.>Permissible value △, such as monitoring current value are 12 amperes, are calculated relatively
Error (12-10)/10=20%>Permissible value △=10%, then the second judge module by signal via signal output part export to
Alarm module, now alarm module conducting, sends alarm signal, and further uploads fault message to control module, and pass through
Control module controls connection motor control terminal, leaves the motor off；
| monitor value-the value of calculation |/value of calculation ＜ permissible value △ if f., such as monitoring current value are 9.8 amperes, are calculated phase
It is 2% to error<Permissible value △=10%, if illustrate that motor is working properly.
The monitoring process of elevator decline stage is similar to.
The B direction of motion and monitor speed
Direction of motion supervising device is by speed probe, displacement transducer, the second computing module, the 3rd judge module, report
Alert module and control module are constituted, and between motor output shaft and power transmission shaft, speed probe leads to described speed probe
Cross the signal input part that holding wire connects the second computing module, the signal output part of the second computing module connects the 3rd judge module
The first signal input part, the secondary signal input of the 3rd judge module connects displacement transducer, elevator by holding wire
Left side one end be provided with steel wire rope fixing point, described steel wire rope fixing point is fixed one end of steel wire rope, the other end of steel wire rope
Institute's displacement sensors are connected by fixed pulley；The signal output part of the 3rd judge module is connected with alarm module, and by control
Molding block controls connection motor control terminal.
Described speed probe is used for monitoring motor speed and direction of rotation data, and by above-mentioned real-time data transmission extremely
Second computing module, motor speed and direction of rotation computing are converted into the direction of motion and the speed of elevator by the second computing module
Degree, and transmit to the 3rd judge module；Elevator motion direction and angular movement speed data are sent to by displacement transducer in real time
3rd judge module of monitoring system, the 3rd judge module is by the direction of motion of the elevator calculating and speed and displacement sensing
The direction of motion of the elevator that device monitors and speed are compared, if the direction of motion is inconsistent or velocity deviation exceedes regulation
Value, such as judges motor direction of rotation by speed probe direction of rotation, and then obtains elevator motion direction upwards, displacement passes
Sensor data obtains elevator stopping (not moving) or the direction of motion is downward, then transmission link between explanation motor and elevator
Occur abnormal.Conversely, then the explanation direction of motion is consistent, further, liter is calculated by the rotary speed data of speed probe
The movement velocity of fall machine is 0.2m/s, and the movement velocity that displacement transducer data obtains elevator is 0.15m/s, absolute error
For 0.05m/s>0.01m/s, illustrates that between motor and elevator, transmission link occurs extremely.Now then the 3rd judge module will be believed
Number export to alarm module via signal output part, now alarm module conducting, sends alarm signal, and further upload fault
Information is to control module, and controls connection motor control terminal by control module, leaves the motor off.
C gradient monitors
Described gradient supervising device is by electrolevel, the 4th judge module, alarm module and control module, described
Electrolevel is close to elevator bottom and is set up, and the signal that described electrolevel connects the 4th judge module by holding wire is defeated
Enter end, the signal output part of described 4th judge module is connected with alarm module, and connection motor control is controlled by control module
End processed.
Above-mentioned monitoring method also includes gradient monitoring method, and described electrolevel is close to elevator bottom and is set up, and uses
In the tilting value of monitoring elevator, elevator horizontal tilt angle numerical value is sent to the of monitoring system by electrolevel timing
Four judge modules, described tilting value and setting are compared by the 4th judge module, if tilting value exceedes setting, if lifting
The horizontal tilt angle that machine allows is 5 degree, when electrolevel monitors that horizontal tilt angle is 7 degree, illustrates that elevator is tight
Weigh unbalance loading, now signal is exported to alarm module via signal output part by the 4th judge module, now alarm module conducting, send out
Go out alarm signal, and further upload fault message to control module, and connection motor control terminal is controlled by control module, make
Motor stops.
D motor temperature monitors
Described motor temperature supervising device is by temperature sensor, the 5th judge module, alarm module and control module structure
Become, described temperature sensor connects the signal of the 5th judge module located at the driving end of motor, temperature sensor by holding wire
Input, the signal output part of the 5th judge module is connected with alarm module, and controls connection motor control by control module
End.
Temperature sensor transmits the motor temperature monitoring to the 5th judge module, and the 5th judge module will monitor
Motor temperature is compared with permissible value, if two values are inconsistent or deviation exceedes setting, the 5th judge module is by signal warp
Exported to alarm module by signal output part, now alarm module conducting, sends alarm signal, and further upload fault message
To control module, and connection motor control terminal is controlled by control module, leave the motor off.
E work total time and the monitoring of cycle of operation number of times
Described safety monitoring system is additionally provided with work total time and cycle of operation number of times supervising device, described work total time
With cycle of operation number of times supervising device by supply voltage sensor, stop be spacing or photoswitch, the 3rd computing module, the 4th fortune
Calculate module, the 6th judge module, the 7th judge module, alarm module and control module to constitute, described supply voltage sensor
Between power supply and motor, and it is connected with the signal input part of the 3rd computing module, the signal output part of the 3rd computing module
Connect the 6th judge module signal input part, the 6th judge module signal output part is connected with alarm module, and by controlling mould
Block controls connection motor control terminal；Described spacing or photoswitch carries for elevator, and defeated with the signal of the 4th computing module
Enter end to be connected, the signal output part of described 4th computing module connects the 7th judge module signal input part, described and warning mould
Block connects, and controls connection motor control terminal by control module.
Work total time and cycle of operation number of times supervising device pass through spacing or photoswitch work times mi(i=1,
2), evaluation work cycle-index n=max (mi)/2 (i=1,2), if m>Setting value N, then illustrate spacing or
Photoswitch is in inefficacy critical state, and system prompt should change limit switch or photoswitch；By total time and the work of working
Make cycle-index, calculate the time interval between cycle of operation twice, if time interval t between cycle of operation twice>Setting value
T, then explanation elevator standby time is longer, and system prompt reply elevator reuses after checking comprehensively；By the total time that works
With cycle of operation number of times, calculate nearest 200 hours and lift usage frequency f=n time/200 hours, if usage frequency f>Setting value F,
Then explanation elevator usage frequency is too high, and system proposes warning to user.
Claims (6)
1. a kind of safety monitoring system of car elevator is it is characterised in that include vehicle weight supervising device and motor electricity
Flow monitoring device, described vehicle weight supervising device and current of electric supervising device by weight sensor, current sensor, first
Computing module, the first and second judge modules, alarm module and control module are constituted, and four edges of elevator bottom are respectively
It is provided with one group of weight sensor, every group of weight sensor passes through the signal input part phase of holding wire and the first judge module respectively
Even, the first signal output part of the first judge module connects alarm module, and controls connection motor control terminal by control module；
The secondary signal outfan of the first judge module connects the signal input part of the first computing module, described first fortune by holding wire
The signal output part calculating module connects to the first signal input part of the second judge module；The secondary signal of the second judge module is defeated
Enter end to be connected with current sensor by holding wire, a phase of described current sensor access motor, located at power supply and motor it
Between, the signal output part of described second judge module is connected with alarm module, and controls connection motor control by control module
End.
2. as claimed in claim 1 a kind of safety monitoring system of car elevator it is characterised in that described safety supervise
Control system is additionally provided with the direction of motion and rotational speed measuring device, and described direction of motion supervising device is by speed probe, displacement sensing
Device, the second computing module, the 3rd judge module, alarm module and control module are constituted, and described speed probe is located at motor
Between output shaft and power transmission shaft, speed probe connects the signal input part of the second computing module, the second computing by holding wire
The signal output part of module connects the first signal input part of the 3rd judge module, the secondary signal input of the 3rd judge module
Displacement transducer is connected by holding wire, elevator is provided with steel wire rope fixing point, described steel wire rope fixing point fixes steel wire
One end of rope, the other end of steel wire rope connects institute's displacement sensors by fixed pulley；The signal output part of the 3rd judge module
It is connected with alarm module, and connection motor control terminal is controlled by control module.
3. as claimed in claim 1 a kind of safety monitoring system of car elevator it is characterised in that described safety supervise
Control system is additionally provided with gradient supervising device, and described gradient supervising device is by electrolevel, the 4th judge module, warning mould
Block and control module, described electrolevel is close to elevator bottom and is set up, and described electrolevel is connected by holding wire
The signal input part of the 4th judge module, the signal output part of described 4th judge module is connected with alarm module, and by control
Molding block controls connection motor control terminal.
4. as claimed in claim 1 a kind of safety monitoring system of car elevator it is characterised in that described safety supervise
Control system is additionally provided with motor temperature supervising device, described motor temperature supervising device by temperature sensor, the 5th judge module,
Alarm module and control module are constituted, and described temperature sensor passes through holding wire located at the driving end of motor, temperature sensor
Connect the signal input part of the 5th judge module, the signal output part of the 5th judge module is connected with alarm module, and by control
Molding block controls connection motor control terminal.
5. as claimed in claim 1 a kind of safety monitoring system of car elevator it is characterised in that described safety supervise
Control system is additionally provided with work total time and cycle of operation number of times supervising device, described work total time and the monitoring of cycle of operation number of times
Device is by supply voltage sensor, stop be spacing or photoswitch, the 3rd computing module, the 4th computing module, the 6th judges mould
Block, the 7th judge module, alarm module and control module are constituted, described supply voltage sensor located at power supply and motor it
Between, and be connected with the signal input part of the 3rd computing module, the signal output part of the 3rd computing module connects the 6th judge module
Signal input part, the 6th judge module signal output part is connected with alarm module, and controls connection motor control by control module
End processed；Described spacing or photoswitch carries for elevator, and is connected with the signal input part of the 4th computing module, and the described 4th
The signal output part of computing module connects the 7th judge module signal input part, described is connected with alarm module, and pass through control
Module controls connection motor control terminal.
6. a kind of monitoring method of the safety monitoring system of car elevator as claimed in claim 1 it is characterised in that
The method specifically includes
(1). vehicle weight and current of electric monitoring method are made up of the following step：
A. the vehicle weight in monitoring elevator：Bearing automobile on the loading end of elevator, four corner punishment of elevator bottom
It is not provided with one group of weight sensor, for monitoring the vehicle weight of each monitoring point, every group of weight sensor passes through letter respectively
Number line is connected with the signal input part of the first judge module, and the first judge module calculates and obtains vehicle weight value, and judges described
Whether vehicle weight value exceedes rated weight；
If b. institute's bearing automobile gravimetric value exceedes rated load, the first judge module is defeated via the first signal output part by signal
Go out to alarm module, now alarm module conducting, sends alarm signal, and further upload fault message to control module, and
Controlled by control module and connect motor control terminal, leave the motor off；
If c., not less than rated load, the first judge module is by vehicle weight value via secondary signal for institute's bearing automobile gravimetric value
Outfan exports to the signal input part of the first computing module, and in the first computing module, corresponding difference vehicle weight value, has vapour
The corresponding table of car weight amount motor current value, passes through the corresponding current value of table lookup according to vehicle weight value, if not corresponding to
Current value, then calculating current value is calculated by linear interpolation, transmits to the first signal input part of the second judge module；
D. monitoring current value is transmitted to the secondary signal input of the second judge module by described current sensor, and second judges mould
Error amount between the monitoring current receiving value and calculating current value is compared by block with error permissible value；
| monitor value-the value of calculation |/value of calculation if e.>Permissible value △, then the second judge module is defeated via signal output part by signal
Go out to alarm module, now alarm module conducting, sends alarm signal, and further upload fault message to control module, and
Controlled by control module and connect motor control terminal, leave the motor off；
| monitor value-the value of calculation |/value of calculation ＜ permissible value △ if f.；Then explanation motor is working properly；
(2). gradient monitoring method：Electrolevel is close to elevator bottom and is set up, for monitoring the tilting value of elevator, electricity
Sub- level indicator transmits described tilting value to the 4th judge module, and described tilting value is compared by the 4th judge module with setting
Relatively, if tilting value exceedes setting, signal is exported to alarm module by the 4th judge module via signal output part, this alarm
Module turns on, and sends alarm signal, and further uploads fault message to control module, and controls connection electricity by control module
Machine control end, leaves the motor off；
(3). the direction of motion and monitor speed method：Described speed probe is used for monitoring motor speed and direction of rotation number
According to, and by above-mentioned data transfer to the second computing module, motor speed and direction of rotation computing are changed by the second computing module
Become the direction of motion of elevator and speed, and transmit to the 3rd judge module, the 3rd judge module is by the elevator calculating
The direction of motion of elevator that the direction of motion and speed are monitored with displacement transducer and speed are compared, if the direction of motion is not
Consistent or velocity deviation exceedes setting, then signal is exported to alarm module by the 3rd judge module via signal output part, this
Alarm module turns on, and sends alarm signal, and further uploads fault message to control module, and is controlled by control module
Connect motor control terminal, leave the motor off；
(4). motor temperature monitoring method：Temperature sensor transmits the motor temperature monitoring to the 5th judge module, and the 5th
The motor temperature monitoring and permissible value are compared by judge module, if two values are inconsistent or deviation exceedes setting, the
Signal is exported to alarm module by five judge modules via signal output part, and now alarm module conducting, sends alarm signal, and
Further upload fault message to control module, and connection motor control terminal is controlled by control module, leave the motor off；
(5). work total time and cycle of operation number of times monitoring method are made up of the following step：Work total time and cycle of operation time
Number supervising device passes through supply voltage Sensor monitoring power supply voltage signal, if equipment energising, computing module entered to conduction time
Row is cumulative, obtains work total time；Computing module adds up spacing or photoswitch work times, takes each spacing or photoswitch
The maximum m of work times, cycle of operation frequency n=m/2, if spacing or photoswitch work times>Setting value N, then say
Bright this is spacing or photoswitch is in inefficacy critical state, and system prompt should change limit switch or photoswitch；By work
Total time and cycle of operation number of times, calculate the time interval twice between cycle of operation, if twice between cycle of operation between the time
Every t>Setting value T, then explanation elevator standby time is longer, and system prompt reply elevator reuses after checking comprehensively；Pass through
Work total time and cycle of operation number of times, calculate lifting work cycle-index in nearest 200 hours, obtain usage frequency f=n
Secondary/200 hours, if usage frequency f>Setting value F, then explanation elevator usage frequency is too high, and system proposes warning to user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410181421.9A CN103922208B (en) | 2014-04-30 | 2014-04-30 | A kind of safety monitoring system of car elevator and its monitoring method |
Applications Claiming Priority (1)
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