CN109733971A - Balance coefficient of elevator detection device and its method - Google Patents
Balance coefficient of elevator detection device and its method Download PDFInfo
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Abstract
The invention discloses a kind of balance coefficient of elevator detection device and its methods, device includes rangefinder, speed measuring device, measurement host, two clamps on amperemeter, the measurement point position of rangefinder is in lift car lower surface, speed measuring device is arranged at traction machine wirerope, two clamps on amperemeter are connect with wherein two phase lines of traction machine triple line, speed measuring device, clamp on amperemeter, traction machine triple line are connected to measurement host, and measurement host is connected to hand-held control terminal.Feature of the present invention is: utilizing actual measurement power of motor, total energy consumption efficiency, acceleration, speed, stroke, transmission resistance and rated load, acceleration of gravity, the relationship precise measurement between winding of the wire rope obtain balance coefficient of elevator data, and camera complete monitoring measures distance, it is simple to operation, intelligent measurement finally obtains the data result of balance coefficient of elevator, and avoiding artificial survey measurements error influences, measurement accuracy is improved, improves detection efficiency more.
Description
Technical field
The present invention relates to elevator detection fields, and in particular to a kind of balance coefficient of elevator detection device and its method.
Background technique
Balance coefficient of elevator is an important indicator of tractive driving formula elevator, detects the method for balance coefficient of elevator at present
First is that being weighed when carriage and to the two is extrapolated when focusing on same position by the tension of no load test carriage and counterweight wirerope
Amount, using the weight difference of the two and the relationship of rated load come calculated equilibrium coefficient, this method is fast and simple, but by steel wire
Itself affect of restricting is larger, and is influenced by rail friction power also larger, and precision is lower, and people station is tested in car top, meeting
Cause Personal Risk's problem of survey crew.
The method of balance coefficient of elevator is detected second is that " elevator surveillance is examined advises with periodic inspection according to TSG 7001-2009
Then-traction and forcibly driving elevator " in: carriage loads rated load amount 30% respectively, and 40%, 45%, 50%, 60% makees uplink, downlink
Whole process operation records the current value of current motor when carriage and counterweight reach same position, and artificial to draw current capacity bent
Line draws the intersections of complex curve of upstream and downstream operation, show that weight/rated load is exactly coefficient of balance value by the intersection point of curve.
This method advantage is technology maturation, the disadvantage is that survey crew is needed to have stronger specialized capability and live practical experience, and
And measurement intermediate handling counterweight link is relatively more, more troublesome, time-consuming consumes manpower again, when accidentally elevator uses the time.
Summary of the invention
Problem that the purpose of the present invention is to overcome the above shortcomings provides a kind of balance coefficient of elevator detection device and its side
Method.
Present invention technical solution used for the above purpose is: balance coefficient of elevator detection device, including ranging
Instrument, speed measuring device, measurement host, two clamps on amperemeter, the measurement point position of the rangefinder are described in lift car lower surface
Speed measuring device is arranged at traction machine wirerope, and wherein two phase lines of two clamps on amperemeter and traction machine triple line connect
It connects, the speed measuring device, clamp on amperemeter, traction machine triple line are connected to measurement host, the measurement host and hand-held control
End connection processed.
The speed measuring device includes fifth wheel, velocity sensor, and the velocity sensor is connect with fifth wheel, described to test the speed
Wheel abuts against on traction machine wirerope when testing the speed, the measurement host including be mounted on the intracorporal data acquisition circuit of main case,
Data processing circuit, lithium battery, and the display screen being mounted on host shell, the data acquisition circuit and data processing electricity
Road connection, the lithium battery, display screen are connected to data processing circuit, the velocity sensor, traction machine triple line, pincer
Ammeter is connected to data acquisition circuit, and the data acquisition circuit is connected to hand-held control terminal.
Three voltage acquisition interfaces being connected to data acquisition circuit, two current acquisitions are installed on the host shell
Interface, a speed acquisition interface, three voltage acquisition interfaces are connect with traction machine triple line respectively, described two electric currents
Acquisition interface is connect with two clamps on amperemeter respectively, and the speed acquisition interface is connect with velocity sensor.
The speed measuring device further includes universal joint, magnet, and the velocity sensor, which is mounted on, to test the speed on shell, described universal
Section one end and the cage connection that tests the speed, the other end are connect with magnet, and the magnet is adsorbed on traction machine retort stand.
The data acquisition circuit is connected with wireless data transmission module, and the data acquisition circuit passes through wireless data transmission
Module is connected to the wireless data receipt modules of hand-held control terminal.
The rangefinder includes distance measuring sensor, camera, range-measuring circuit plate, ranging battery, and the distance measuring sensor is taken the photograph
As head is mounted on rangefinder shell, the range-measuring circuit plate, ranging battery are mounted in rangefinder shell, the ranging sensing
Device, camera, ranging battery are connected to range-measuring circuit plate, the range-measuring circuit plate and the ranging being mounted on rangefinder shell
Display screen connection.
The rangefinder includes distance measuring sensor, camera, range-measuring circuit plate, ranging battery, and the distance measuring sensor is taken the photograph
As head is mounted on rangefinder shell, the range-measuring circuit plate, ranging battery are mounted in rangefinder shell, the ranging sensing
Device, camera, ranging battery are connected to range-measuring circuit plate, and the range-measuring circuit plate is connect with hand-held control terminal.
Balance coefficient of elevator detection method, comprising the following steps:
A, lift car is parked in top layer, measures lift car lower surface height L1；
B, opening elevator carriage measures lift car centrifugal current A1, A2 and downlink voltage V1, V2, V3 from top layer row to bottom
And elevator real time execution acceleration a1 and downstream rate Vd, measure lift car lower surface height L2；
C, downward storke Ld=L1-L2 is calculated；
D, opening elevator carriage measures lift car centrifugal current A3, A4 and downlink voltage V4, V5, V6 from underlying lines to top layer
And elevator real time execution acceleration a2 and downstream rate Vu, measure lift car lower surface height L3；
E, up stroke Lu=L3-L2 is calculated；
F, using " parameter identification method " calculated equilibrium COEFFICIENT K:
It is established respectively shown in the motion model such as formula (4) and formula (5) of downlink and uplink first,
Wherein Nd is elevator downlink power input to machine, and η d is the electric efficiency of elevator downlink multiplied by mechanical gross efficiency, and Vd is electricity
Terraced downstream rate；Nu be ascending for elevator power input to machine generated output, η u be ascending for elevator electric power generation efficiency multiplied by
Mechanical gross efficiency, Vu are ascending for elevator speed, and g is acceleration of gravity, and Q is elevator rated load, and K is coefficient of balance,,, it can be assumed that η d=η u=η can obtain formula (6) by formula (4) and formula (5),
Identification method available Kd and Ku is respectively adopted for formula (4) and formula (5), can be calculated using formula (6)
η is obtained, there is Kd, Ku and η, can both calculate coefficient of balance K.
Balance coefficient of elevator detection method, comprising the following steps:
A, lift car is parked in top layer, measures lift car lower surface height L1；
B, opening elevator carriage measures lift car centrifugal current A1, A2 and downlink voltage V1, V2, V3 from top layer row to bottom
And elevator real time execution acceleration a1 and downstream rate Vd, measure lift car lower surface height L2；
C, downward storke Ld=L1-L2 is calculated；
D, opening elevator carriage measures lift car centrifugal current A3, A4 and downlink voltage V4, V5, V6 from underlying lines to top layer
And elevator real time execution acceleration a2 and downstream rate Vu, measure lift car lower surface height L3；
E, up stroke Lu=L3-L2 is calculated；
F, using energy-consuming balance method " calculated equilibrium COEFFICIENT K:
The potential energy that counterweight end is converted to for the total energy consumption of elevator downlink consumption, is converted to the potential energy at ascending for elevator counterweight end
Electric energy, therefore formula (8) and formula (9) can be obtained,
Wherein Pd is elevator downlink total power consumption, and Pu is ascending for elevator total power generation, and Ld is elevator downward storke, and Lu is ascending for elevator
Stroke, η are efficiency, and g is acceleration of gravity, and Q is elevator rated load, and K is coefficient of balance, can based on formula (8) and formula (9)
It obtains formula (10),
Based on formula (8) formula (9) and formula (10), since elevator is by downlink, then ascending for elevator returns to top layer, mechanical
It is 0 that potential energy, which increases, and the difference of the electric energy of the electric energy and power generation consumed is to be lost, it is assumed that the loss of ascending for elevator and elevator downlink
It is the same, then available formula (11),
Since Pu is ascending for elevator total power generation it is known that Pd can be calculated based on formula (11) and formula (10), based on public affairs
Formula (8) and formula (9), due to Pd, Pu, Ld, Lu, g, Q is it is known that can both calculate coefficient of balance K.
The invention has the characteristics that using actual measurement power of motor, total energy consumption efficiency, acceleration, speed, stroke, transmission
Resistance and rated load, acceleration of gravity, the relationship precise measurement between winding of the wire rope obtain balance coefficient of elevator data, band
There is visual type camera complete monitoring to measure distance, simple to operation, intelligent measurement has finally obtained computer room and machine-roomless lift
The data result of coefficient of balance, avoiding artificial survey measurements error influences, and improves measurement accuracy, mentions detection efficiency more
It is high.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is rangefinder schematic diagram of the invention.
Fig. 3 is measurement host schematic diagram of the invention.
Fig. 4 is speed measuring device schematic diagram of the invention.
Fig. 5 is clamp on amperemeter schematic diagram of the invention.
Fig. 6 is hand-held control terminal schematic diagram of the invention.
Fig. 7 is circuit diagram of the invention.
Wherein: 1, rangefinder 101, rangefinder sensor 102, camera 103, rangefinder shell 104, ranging
Circuit board 105, ranging battery 106, ranging display screen 2, measurement host 201, host shell 202, switch
203, voltage acquisition interface 204, current acquisition interface 205, speed acquisition interface 206, lithium battery charge port 207,
USB interface 208, display screen 209, data acquisition circuit 210, data processing circuit 211, wireless data transmission module
212, lithium battery 3, speed measuring device 301, fifth wheel 302, velocity sensor 303, acquisition line interface S 304, test the speed
Shell 305, universal joint 306, magnet 4, clamp on amperemeter 401, plastic shell 402, current transformer 403,
Acquire line interface A 404, current data Acquisition Circuit 405, spring 501, red voltage acquisition line 502, yellow voltage
Gathering line 503, green voltage acquisition line 504, red current acquisition line 505, yellow current acquisition line 506, speed
Gathering line 6, traction machine 7, traction machine wirerope 8, lift car 9, traction machine retort stand 10, traction machine triple line
Input magazine 11, traction machine triple line 12, hand-held control terminal 1201, wireless data receipt modules.
Specific embodiment
As shown in figs. 1-7, the present invention is balance coefficient of elevator detection device, including rangefinder 1, speed measuring device 3, measurement master
Machine 2, hand-held control terminal 12 and two clamps on amperemeter 4.
The rangefinder 1 is visual rangefinder, including distance measuring sensor 101, camera 102, range-measuring circuit plate 104, survey
Away from battery 105, the distance measuring sensor 101, camera 102 are mounted on rangefinder shell 103, the range-measuring circuit plate 104,
Ranging battery 105 is mounted in rangefinder shell 103, the distance measuring sensor 101, camera 102, ranging battery 105 with
Range-measuring circuit plate 104 is connected to, and observes the position that distance measuring sensor 101 goes out light by camera 102, guarantees measurement point in elevator car
On the lower surface in compartment 8, the range-measuring circuit plate 104 connect with the ranging display screen 106 being mounted on rangefinder shell 103 or with
Hand-held 12 wireless signal of control terminal connection, for distance measuring sensor 101 by the data transmission measured to range-measuring circuit plate 104, ranging is electric
Distance value is shown by ranging display screen 106 or hand-held control terminal 12 after the processing of road plate 104.
The speed measuring device 3 includes fifth wheel 301, velocity sensor 302, universal joint 305, magnet 306, the biography that tests the speed
Sensor 302 is connect with fifth wheel 301, and the fifth wheel 301 abuts against on traction machine wirerope 7 when testing the speed, the sensing that tests the speed
Device 302, which is mounted on, to be tested the speed on shell 304 and connect with the acquisition line interface S303 to test the speed on shell 304, the universal joint 305 1
Shell 304 of holding and test the speed connection, the other end are connect with magnet 306, and the magnet 306 is adsorbed on traction machine retort stand 9.
The clamp on amperemeter 4 includes being arranged to pincerlike current transformer 402, is cased with plastics on current transformer 402
Shell 401, is equipped with the spring 405 of scalable return on current transformer 402, in current transformer 402 and plastic shell 401
Current data Acquisition Circuit 404 connect, the current data Acquisition Circuit 404 and the acquisition line interface on plastic shell 401
A403 connection.
The measurement host 2 includes data acquisition circuit 209, the data processing circuit being mounted in host shell 201
210, lithium battery 212, and the display screen 208 being mounted on host shell 201, the data acquisition circuit 209 at data
It manages circuit 210 to be connected to, the lithium battery 212 is connect with the lithium battery charge port 206 on host shell 201, switch 202, described
Lithium battery 212, display screen 208 are connected to data processing circuit 210, at the USB interface 207 on host shell 201 and data
It manages circuit 210 to connect, three voltage acquisition interfaces being connected to data acquisition circuit 209 is installed on the host shell 201
203, two current acquisition interfaces, 204, speed acquisition interfaces 205, voltage acquisition interface 203 pass through voltage acquisition line and drag
Draw traction machine triple line 11 in machine triple line input magazine 10 to connect, the current acquisition interface 204 by current acquisition line with
The acquisition line interface A403 connection of clamp on amperemeter 4, the speed acquisition interface 205 pass through speed acquisition line and speed measuring device 3
The S303 connection of acquisition line interface, the data acquisition circuit 209 is connected with wireless data transmission module 211, the data acquisition
Circuit 209 is connected to by wireless data transmission module 211 with the wireless data receipt modules 1201 of hand-held control terminal 12, the hand
Holding control terminal 12 can be computer or mobile phone or tablet computer.
Balance coefficient of elevator detection method of the invention: it when work, no matter for having computer room or machine room, tests first
Place has in computer room or machine room in elevator to be tested, and guarantees that unloaded nobody and lift car 8 are parked in most in lift car 8 when test
Top layer, then power control cabinet manually makes power cut-off, makes three voltage acquisition lines (red voltage acquisition line 501, yellow voltage acquisition
Line 502, green voltage acquisition line 503), two current acquisition lines (red current acquisition line 504, yellow current acquisition line 505)
One end is separately connected on three voltage acquisition interfaces, 203, two current acquisition interfaces 204 of measurement host 2, three voltage acquisitions
Line (red voltage acquisition line 501, yellow voltage acquisition line 502, green voltage acquisition line 503) other end is connect respectively in traction machine
On 11 3 terminals of traction machine triple line in triple line input magazine 10, two current acquisition lines (red current acquisition line 504,
Yellow current acquisition line 505) other end connects with the acquisition line interface A403 of two clamps on amperemeter 4 respectively, manually used with hand
It is red that power, which pins one of clamp on amperemeter 4(marker color) plastic shell 401, the spring of internal scalable return
405 can be such that two c-type jaws of current transformer 402 open, and then enclose in the corresponding red voltage acquisition of traction machine triple line 11
It on the line of line 501 and unclamps, two c-type jaws merge tightly together at this time, and same method makes another clamp on amperemeter 4
Correspondence yellow voltage of the two c-type jaw circles of the current transformer 402 of (marker color is yellow) in traction machine triple line 11
On the line of gathering line 502, speed measuring device 3 is taken out out of measurement host 2 casees, 506 one end of speed acquisition line is adopted with speed measuring device 3
Collect line interface S303 connection, the other end is connect with the speed acquisition interface 205 of measurement host 2, can also be made to measure host 2 and be tested the speed
Device 3 is wirelessly connected to, and the magnet 306 of speed measuring device 3 is then made to be adsorbed on draging near traction machine wirerope 7
Draw on machine retort stand 9, abut against fifth wheel 301 on traction machine wirerope 7 by adjusting universal joint 305, measures 2 position of host
It can be placed on any position near 6 top of traction machine or traction machine, booting is attached to rangefinder 1 on hoistway lowermost end manually, leads to
The camera 102 for crossing adjustment rangefinder 1 observes the position that distance measuring sensor 101 goes out light, guarantees measurement point under lift car 8
On surface, distance L1 value is obtained, take out hand-held 12 position of control terminal and be placed on outside 8 car door of lift car in top building, at this time
Measuring phases are prepared to enter into, power switch is opened manually in power control cabinet, while opening the switch 202 of measurement host 2, is manually entered electricity
Terraced rated load Q value, selected the surveyed driving of traction machine 6 is worm-gear endless-screw type or permanent-magnet synchronous type, inputs rated speed of lift
S, after recently entering winding of the wire rope W value, next step opening elevator carriage 8 works from top to the bottom, at this time three electricity
Press gathering line (red voltage acquisition line 501, yellow voltage acquisition line 502, green voltage acquisition line 503) He Lianggen current acquisition
The voltage of traction machine triple line 11 is acquired in line (red current acquisition line 504, yellow current acquisition line 505) whole process in real time
V1, V2, V3 and electric current A1, A2, and send real time signal data in the data acquisition circuit 209 of measurement host 2, while by
It works in lift car 8, traction machine 6 will drive the movement of traction machine wirerope 7, and the fifth wheel 301 of speed measuring device 3 is due to abutting against
It can and then be rotated on traction machine wirerope 7, velocity sensor 302 can be by real time execution acceleration a1's and elevator downstream rate Vd
Signal is transferred in the data acquisition circuit 209 of measurement host 2, is calculated by arranging, will finally by data processing circuit 210
Data are sent on display screen 208, it is also the same realized by wireless data transmission module 211 and hand-held control terminal 12 without line number
It is connected to according to 1201 wireless signal of receiving module, transmits data to hand-held control terminal 12, can also will measured by USB interface 207
Process data result is copied out, when lift car 8 runs to lowermost end, observes ranging by adjusting the camera 102 of rangefinder 1
Sensor 101 goes out the position of light, guarantees that measurement point on the lower surface of lift car 8, obtains distance L2 value, in hand-held control terminal
Downlink L1 and L2 value is inputted on 12 special measurement software, L1-L2 difference is downward storke Ld, is next again turned on elevator
Carriage 8 works from the bottom to top, at this time three voltage acquisition lines (red voltage acquisition line 501, yellow voltage acquisition lines
502, green voltage acquisition line 503) He Lianggen current acquisition line (red current acquisition line 504, yellow current acquisition line 505) is whole
The voltage V4, V5, V6 and electric current A3, A4 of traction machine triple line 11 are acquired during a in real time, and real time signal data is sent
Into the data acquisition circuit 209 of measurement host 2, simultaneously because lift car 8 works, traction machine 6 will drive traction machine steel wire
The fifth wheel 301 of 7 movement of rope, speed measuring device 3 can and then rotate on traction machine wirerope 7 due to abutting against, velocity sensor 302
The signal of real time execution acceleration a2 and ascending for elevator speed Vu can be transferred in the data acquisition circuit 209 of measurement host 2,
It is calculated by arranging, is transmitted data on display screen 208 finally by data processing circuit 210, similarly pass through no line number
It realizes according to transmitting module 211 and is connected to 1201 wireless signal of wireless data receipt modules of hand-held control terminal 12, data are sent
To hand-held control terminal 12, measurement process data result can also be copied out by USB interface 207, run in lift car 8 and most push up
When end, again by rangefinder 1 camera 102 observe 101 exit positions of distance measuring sensor whether in measurement point in elevator car
On the lower surface in compartment 8, distance L3 value is obtained, input uplink L3 and L2 value, L3- on the special measurement software of hand-held control terminal 12
L2 difference is up stroke Lu, and formula algorithm operation arranges centrifugal current on the special measurement software by holding control terminal 12
A1, A2, downlink voltage V1, V2, V3 and ascending current A3, A4, uplink voltage V4, V5, V6 obtain power input to machine (frequency converter
Output power) downlink and uplink output power Nd and Nu, pass through downlink acceleration a1 and elevator downstream rate Vd and downward storke
Ld value compares, and is compared by uplink acceleration a2 and ascending for elevator speed Vu and up stroke Lu value, balance coefficient of elevator K
Value calculates as follows:
Tradition is established shown in elevator descending power and the kinematics model such as formula (1) of speed based on conservation of energy principle:
Wherein N is power input to machine (power converter output)；V is elevator speed；η is efficiency, be electric efficiency and
The product of mechanical gross efficiency, data show electric efficiency generally 80% to 90% room machine gross efficiency generally also 80% to 90% it
Between, therefore η is between 64% to 81%；Q is elevator rated load；G is acceleration of gravity.
Postpone detection algorithm and use error least squares method, the smallest deviant of error is chosen, as shown in formula (2).
Wherein offset is length of delay, and the time interval of present data acquisition is 250ms, and offset is equal to 1, indicates delay
250ms, n are the data amount check of upstream or downstream acquisition.
According to formula (2) when calculating, offset calculates E one by one from 0 to 20, and the corresponding offset of the smallest E value as prolongs
Value late, is eliminated by time delay, and power curve and the variation of rate curve are substantially synchronous.
The premise of the calculating of coefficient of balance is the kinematics model for needing to establish elevator, a more accurate elevator downlink
Shown in kinematics model such as formula (3).
Using " parameter identification method " calculated equilibrium COEFFICIENT K:
It is established respectively shown in the motion model such as formula (4) and formula (5) of downlink and uplink first.
Wherein Nd is elevator downlink power input to machine (power converter output), and η d is that the electric efficiency of elevator downlink multiplies
With mechanical gross efficiency, Vd is elevator downstream rate；Nu is the power generation of ascending for elevator power input to machine (power converter output)
Power, η u are the electric power generation efficiency of ascending for elevator multiplied by mechanical gross efficiency, and Vu is ascending for elevator speed, and g is acceleration of gravity,
Q is elevator rated load, and K is coefficient of balance,,, it can be assumed that η d=η u=η passes through formula
(4) and formula (5) can obtain formula (6).
Identification method available Kd and Ku is respectively adopted for formula (4) and formula (5), can be calculated using formula (6)
η is obtained, there is Kd, Ku and η, can both calculate coefficient of balance K.
Using " energy-consuming balance method " calculated equilibrium COEFFICIENT K:
The potential energy that counterweight end is converted to for the total energy consumption of elevator downlink consumption, is converted to the potential energy at ascending for elevator counterweight end
Electric energy (motor power generation), therefore formula (8) and formula (9) can be obtained.
Wherein Pd is elevator downlink total power consumption, and Pu is ascending for elevator total power generation, and Ld is elevator downward storke, and Lu is ascending for elevator
Stroke, η are efficiency, and g is acceleration of gravity, and Q is elevator rated load, and K is coefficient of balance, can based on formula (8) and formula (9)
It obtains formula (10).
Based on formula (8) formula (9) and formula (10), since elevator is by downlink, then ascending for elevator returns to top layer, mechanical
It is 0 that potential energy, which increases, and the difference of the electric energy of the electric energy and power generation consumed is to be lost, it is assumed that the loss of ascending for elevator and elevator downlink
It is the same, then available formula (11).
Since Pu is ascending for elevator total power generation it is known that Pd can be calculated based on formula (11) and formula (10), based on public affairs
Formula (8) and formula (9), due to Pd, Pu, Ld, Lu, g, Q is it is known that can both calculate coefficient of balance K.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art within the technical scope of the present disclosure, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. balance coefficient of elevator detection device, it is characterised in that: including rangefinder, speed measuring device, measurement host, two pincerlike electricity
Flow table, in lift car lower surface, the speed measuring device is arranged at traction machine wirerope the measurement point position of the rangefinder, and two
A clamp on amperemeter is connect with wherein two phase lines of traction machine triple line, the speed measuring device, clamp on amperemeter, traction machine
Triple line is connected to measurement host, and the measurement host is connected to hand-held control terminal.
2. balance coefficient of elevator detection device as described in claim 1, it is characterised in that: the speed measuring device includes testing the speed
Wheel, velocity sensor, the velocity sensor are connect with fifth wheel, and the fifth wheel abuts against traction machine wirerope when testing the speed
On, the measurement host includes being mounted on the intracorporal data acquisition circuit of main case, data processing circuit, lithium battery, Yi Jian
Display screen on host shell, the data acquisition circuit are connected to data processing circuit, and the lithium battery, display screen are equal
It is connected to data processing circuit, the velocity sensor, traction machine triple line, clamp on amperemeter connect with data acquisition circuit
Logical, the data acquisition circuit is connected to hand-held control terminal.
3. balance coefficient of elevator detection device as claimed in claim 2, it is characterised in that: be equipped on the host shell with
Three voltage acquisition interfaces, the two current acquisition interfaces, a speed acquisition interface of data acquisition circuit connection, described three
Voltage acquisition interface is connect with traction machine triple line respectively, and described two current acquisition interfaces connect with two clamps on amperemeter respectively
It connects, the speed acquisition interface is connect with velocity sensor.
4. balance coefficient of elevator detection device as claimed in claim 2, it is characterised in that: the speed measuring device further includes universal
Section, magnet, the velocity sensor, which is mounted on, to test the speed on shell, described universal joint one end and tests the speed cage connection, the other end with
Magnet connection, the magnet are adsorbed on traction machine retort stand.
5. balance coefficient of elevator detection device as claimed in claim 2, it is characterised in that: the data acquisition circuit is connected with nothing
Line data transmission module, the data acquisition circuit are received by the wireless data of wireless data transmission module and hand-held control terminal
Module connection.
6. the balance coefficient of elevator detection device as described in claim 1-5 any claim, it is characterised in that: the ranging
Instrument includes distance measuring sensor, camera, range-measuring circuit plate, ranging battery, and the distance measuring sensor, camera are mounted on rangefinder
On shell, the range-measuring circuit plate, ranging battery are mounted in rangefinder shell, the distance measuring sensor, camera, ranging electricity
The connection of Chi Junyu range-measuring circuit plate, the range-measuring circuit plate are connect with the ranging display screen being mounted on rangefinder shell.
7. the balance coefficient of elevator detection device as described in claim 1-5 any claim, it is characterised in that: the ranging
Instrument includes distance measuring sensor, camera, range-measuring circuit plate, ranging battery, and the distance measuring sensor, camera are mounted on rangefinder
On shell, the range-measuring circuit plate, ranging battery are mounted in rangefinder shell, the distance measuring sensor, camera, ranging electricity
The connection of Chi Junyu range-measuring circuit plate, the range-measuring circuit plate are connect with hand-held control terminal.
8. balance coefficient of elevator detection method, it is characterised in that the following steps are included:
A, lift car is parked in top layer, measures lift car lower surface height L1；
B, opening elevator carriage measures lift car centrifugal current A1, A2 and downlink voltage V1, V2, V3 from top layer row to bottom
And elevator real time execution acceleration a1 and downstream rate Vd, measure lift car lower surface height L2；
C, downward storke Ld=L1-L2 is calculated；
D, opening elevator carriage measures lift car centrifugal current A3, A4 and downlink voltage V4, V5, V6 from underlying lines to top layer
And elevator real time execution acceleration a2 and downstream rate Vu, measure lift car lower surface height L3；
E, up stroke Lu=L3-L2 is calculated；
F, using " parameter identification method " calculated equilibrium COEFFICIENT K:
It is established respectively shown in the motion model such as formula (4) and formula (5) of downlink and uplink first,
Wherein Nd is elevator downlink power input to machine, and η d is the electric efficiency of elevator downlink multiplied by mechanical gross efficiency, and Vd is electricity
Terraced downstream rate；Nu be ascending for elevator power input to machine generated output, η u be ascending for elevator electric power generation efficiency multiplied by
Mechanical gross efficiency, Vu are ascending for elevator speed, and g is acceleration of gravity, and Q is elevator rated load, and K is coefficient of balance,,, it can be assumed that η d=η u=η can obtain formula (6) by formula (4) and formula (5),
Identification method available Kd and Ku is respectively adopted for formula (4) and formula (5), can be calculated using formula (6)
η is obtained, there is Kd, Ku and η, can both calculate coefficient of balance K.
9. balance coefficient of elevator detection method, it is characterised in that the following steps are included:
A, lift car is parked in top layer, measures lift car lower surface height L1；
B, opening elevator carriage measures lift car centrifugal current A1, A2 and downlink voltage V1, V2, V3 from top layer row to bottom
And elevator real time execution acceleration a1 and downstream rate Vd, measure lift car lower surface height L2；
C, downward storke Ld=L1-L2 is calculated；
D, opening elevator carriage measures lift car centrifugal current A3, A4 and downlink voltage V4, V5, V6 from underlying lines to top layer
And elevator real time execution acceleration a2 and downstream rate Vu, measure lift car lower surface height L3；
E, up stroke Lu=L3-L2 is calculated；
F, using energy-consuming balance method " calculated equilibrium COEFFICIENT K:
The potential energy that counterweight end is converted to for the total energy consumption of elevator downlink consumption, is converted to the potential energy at ascending for elevator counterweight end
Electric energy, therefore formula (8) and formula (9) can be obtained,
Wherein Pd is elevator downlink total power consumption, and Pu is ascending for elevator total power generation, and Ld is elevator downward storke, and Lu is ascending for elevator
Stroke, η are efficiency, and g is acceleration of gravity, and Q is elevator rated load, and K is coefficient of balance, can based on formula (8) and formula (9)
It obtains formula (10),
Based on formula (8) formula (9) and formula (10), since elevator is by downlink, then ascending for elevator returns to top layer, mechanical
It is 0 that potential energy, which increases, and the difference of the electric energy of the electric energy and power generation consumed is to be lost, it is assumed that the loss of ascending for elevator and elevator downlink
It is the same, then available formula (11),
Since Pu is ascending for elevator total power generation it is known that Pd can be calculated based on formula (11) and formula (10), based on public affairs
Formula (8) and formula (9), due to Pd, Pu, Ld, Lu, g, Q is it is known that can both calculate coefficient of balance K.
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