CN203593484U - Sectional-type lift shaft signal collector - Google Patents
Sectional-type lift shaft signal collector Download PDFInfo
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- CN203593484U CN203593484U CN201320459128.5U CN201320459128U CN203593484U CN 203593484 U CN203593484 U CN 203593484U CN 201320459128 U CN201320459128 U CN 201320459128U CN 203593484 U CN203593484 U CN 203593484U
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Abstract
The utility model discloses a sectional-type lift shaft signal collector, which comprises a three-phase power-frequency power source, a tractor, a lift main controller, a frequency converter and a shaft signal collection controller and also comprises a sine-cosine encoder installed on a motor shaft of the tractor, door area switches installed on each floor of the lift shaft and a forced ascending speed-change switch and a forced descending speed-change switch installed at an upper end station and a lower end station of lift operation, wherein the lift controller is mutually connected to the frequency converter, the sine-cosine encoder is connected to an input end of a fractional frequency panel of the frequency converter by a shaping circuit and an output end of the fractional frequency panel is connected to the input end of the shaft signal collection controller by a frequency conversion pulse input circuit; and the output end of the shaft signal connection controller is connected to the input end of the lift controller by a communication circuit. The sectional-type lift shaft signal collector in the utility model has relatively high cost performance and can rapidly find out shaft signals lost by a lift in order to increase operational efficiency of the lift.
Description
Technical field
The utility model relates to a kind of sectional type elevator hoistways signal pickup assembly.
Background technology
At present, elevator hoistways signal acquisition method has following several mode:
One, magnet contactor hoistway signalling apparatus
Elevator hoistways signal impulse figure when Fig. 1 is 4 magnet contactores, wherein, up to force throw-over switch and the descending throw-over switch that forces be closed type, and the up throw-over switch that forces is in the time of top layer speed-adjusting distance d1, and the elevator flat bed that must slow down by force stops.In like manner, the descending throw-over switch that forces in the time of bottom speed-adjusting distance d1, elevator must slow down by force flat bed stop.Up throw-over adds that it is normal open switch that leveling switch and descending throw-over add lower leveling switch, and has difunctional---throw-over and flat bed.
With magnet contactor, as elevator hoistways signal recorder, advantage is that implementation method is simple, low price, but it is only suitable for slower elevators and is less than 1.75m/s as elevator speed, and langding accuracy is not high, and the non-standard layers such as short floor are difficult for realizing.Occur that power-off stops the situation such as ladder or magnet contactor fault once the problem of its maximum is elevator, elevator will be lost the position signal of elevator, and it must proofread and correct operation, to elevator top or bottom by forcing throw-over switch to carry out floor signal correction.Elevator is proofreaied and correct the time that operation need to be longer, completes the time that the instruction task of destination need to be longer, and the efficiency of operation and passenger's condition in the mind that this has greatly affected elevator, be not suitable for for Intelligent Buildings.
Two, the hoistway signal pickup assembly based on incremental encoder
1, the groundwork of the hoistway acquisition of signal based on incremental encoder:
Elevator adopts the component part of photoelectric type rotary encoder as device for detection of position of car body sometimes.Photoelectric pulse coder is arranged on the axle of electrical motor, when the pulse count that after electrical motor rotation, coder produces is proportional to the distance that elevator moves, therefore, with the high-speed counter of hoistway signal pickup assembly, the impulse singla of elevator is added up to can obtain elevator position whenever.Suppose that the every circle of photoelectric encoder produces M pulse, the count pulse number that high-speed counter produces is N.Towing machine transmitting ratio is i, traction sheave diameter is D (mm), frequency division plate frequency dividing ratio is λ, elevator speed is v (mm/s), motor speed is n (r/min), the displacement of elevator is L (mm), the distance of the each pulse representative of definition counting machine is pulse equivalency S, S=π D*i/ (M λ) (mm/ pulse) or S=v/n* (M λ) (mm/ pulse), so the relative displacement L=NS (mm) of elevator.
2, the application of the hoistway signal pickup assembly based on incremental encoder
(1) hoistway signal acquisition controller: hoistway signal acquisition controller is the core component of hoistway signal pickup assembly, it is responsible for gathering all hoistway signals, as the detection of the output pulse of incremental encoder, flat bed signal detection, high-low limit position signal, it is also responsible for the processing to collection signal and exports the elevator hoistways data of controlling elevator cage operation to elevator main controller.The elevator applications system of the hoistway signal pickup assembly based on incremental encoder as shown in Figure 2.
(2) flat bed detecting device: the corresponding magnetic isolation plate of flat bed of the Permanent-magnetic induction switch that flat bed detecting device is generally pushed up by sedan-chair and every floor layer in hoistway forms.In running process of elevator, Permanent-magnetic induction switch cutting magnetic line when the magnetic isolation plate, makes Permanent-magnetic induction switch action (be generally normally closed point, make " 1 " become " 0 "), and by this signal feedback to apparatus for controlling elevator.
(3) upper and lower inhibiting device: upper and lower inhibiting device has two each basic function: a. to run off after top layer or bottom position when car, and bound bit switch moves, and forces elevator to stop the operation of current direction.While action as lower position switch, elevator is forbidden operation downwards, but can upwards move.B. in the time that elevator moves to bound bit switch and makes it to move, car position data is recovered a reference value.When upper limit position switch action, the upper limit position data of storing when control system is used self study, replaces the car position data that current rotary encoder gathers.Can proofread and correct like this error that elevator produces in operational process, guarantee the accurate of elevator operation and flat bed.
(4) self-learning function of control system: self-learning function is in order to learn and store upper and lower limit bit switch in hoistway, the position of flat bed detecting device of each layer, and the Reference data of the operation using this as elevator.Self study process, elevator starts upwards to move at a slow speed from lower limit, through the flat bed detector switch of each layer, runs to upper limit position switch position (the self study process of the system having is that elevator, from lower limit runs to upper limit, reruns to lower limit switch).In this process, by the data acquisition of coder, system log (SYSLOG) is also stored upper and lower spacing position data and the floor position data of each layer.
The above-mentioned hoistway acquisition of signal based on incremental encoder is another method of lift car location, this method is than wanting failure-free many with magnet contactor as hoistway signal framing lift car, and manufacturing price is also more cheap, but the same problem when it also exists with magnet contactor as hoistway signal, be can lose hoistway signal after system cut-off or power-off jiggering, elevator needs to go to proofread and correct operation to end station equally, so also can make the operating efficiency of elevator greatly reduce, be unfavorable in passenger flow volume large, and important elevator applications occasion use.
Three, the hoistway signal pickup assembly based on absolute value encoder
Definitely for increment, as its name suggests, what is called be exactly definitely the output signal of coder in the process of a week or many week runnings, the corresponding output encoder value of its each position and angle is all unique correspondence, so, just, possesses the function of power-failure memory.Figure 3 shows that the erection plan of absolute value encoder in elevator hoistways.In figure, rotate absolute value encoder and be arranged on elevator car roof, by the toothed wheel that is arranged on the cog belt in hoistway and be arranged on absolute value encoder axle, coder axle is rotated, thereby make the position signal of absolute value encoder output lift car.
Absolute type encoder is to design according to the bit code in Computer Organization Principles, such as: 8 bit codes (00000011), 16 bit codes, 32 bit codes etc.On the code-disc of coder, be exactly multiple tracks light tunnel groove these bit code message reflections, per pass groove is successively with 2 lines, 4 lines, 8 lines, 16 line layouts.So result of layout, such as for a single-ring absolute type, be one week 360 ° be divided into 24 powers, 28 powers, 2 16 powers,,,, figure place is higher, precision is higher, range is also larger.Like this, in each position of coder, by reading the logical, dark of per pass groove, obtain one group from 2 zero degree side unique 2 scale codings (Gray code) to 2 n-1 power, this is just called n position absolute encoder.Such coder is to be determined by the mechanical location of photoelectric code disk, and it is not subject to the impact that has a power failure, disturbs.Each position that absolute encoder is determined by mechanical location is unique, and it, without looking for R point and need not count without memory always, when needs location aware, when just goes to read its position.Like this, the reliability of the noiseproof feature of coder, data has improved.
For this vertical transportation equipment of elevator, if can lose at no time elevator hoistways signal, that is very favourable, because elevator can be because of any former thereby loss elevator position signal, elevator does not need the correction of car position that taken much time, thereby the operating efficiency of elevator is fully enhanced, and the degree of automation of elevator is greatly improved, elevator can be applied in the middle of high-end intelligent building, meet the vertical transportation demand in building.But the manufacturing cost of absolute value encoder is higher, make its application be subject to relative restriction.
As can be seen from the above analysis, elevator hoistways signal pickup assembly has various ways, there is technical merit general, be applicable to the hoistway signalling apparatus of low side elevator applications occasion, as magnet contactor, incremental encoder etc., also there is technical merit higher, can be applied to the hoistway signal pickup assembly of elevator high-end applications occasion, as absolute value encoder.The hoistway signal acquiring system that cost performance is higher is reliably to locate elevator car position, and can make elevator have higher operating efficiency.Application magnet contactor, incremental encoder, as hoistway signal, can reduce elevator operating efficiency because need to spend the more time to go elevator to proofread and correct operation, though and absolute value encoder is seen more satisfactoryly technically, cost compare is high.
Summary of the invention
The above-mentioned shortcoming existing in order to overcome existing elevator hoistways signal acquisition method, the utility model provides the hoistway signal that a kind of cost performance is higher, can comparatively fast find out elevator loss, thereby improves the sectional type elevator hoistways signal pickup assembly of the operating efficiency of elevator.
The technical solution adopted in the utility model is:
Sectional type elevator hoistways signal pickup assembly, comprise three phase worker power, permanent-magnet gearless wheel synchro traction machine, elevator primary controller, frequency converter, with the hoistway signal acquisition controller of self-learning function, it is characterized in that: also comprise the sine and cosine encoder being arranged on towing machine motor shaft, be arranged on each floor Shang Men district's switch of elevator hoistways and be arranged in elevator operation, up throw-over switch and the descending throw-over switch that forces of forcing at station, lower end, described electric life controller and described frequency converter interconnect, described sine and cosine encoder is connected with the input end of the frequency division plate of described frequency converter by shaping circuit, the mouth of the frequency division plate of described frequency converter is connected by variable-frequency pulse input circuit with the input end of described hoistway signal acquisition controller, the input end of described hoistway signal acquisition controller is connected with described Men district switch, up throw-over switch and the descending throw-over on-off signal that forces of forcing, and the mouth of described hoistway signal acquisition controller is connected by communicating circuit with the input end of described electric life controller, the input end of described electric life controller is connected with call, function, status signal signal, and the mouth of described electric life controller is replied with call, floor display is connected, described Men district switch, up throw-over switch and the descending on off state that forces throw-over switch of forcing have uniqueness in whole hoistway on-off signal changes,
The sine and cosine ripple signal of described sine and cosine encoder output is as the signal source of elevator car position, sine and cosine encoder sine wave output differential signal, by shaping circuit, sinusoidal waveform differential signal is converted to square-wave signal and exports to the frequency division plate of frequency converter, the frequency division of the frequency division plate by frequency converter is processed output frequency division signal to hoistway signal acquisition controller, hoistway signal acquisition controller is processed divided pulse and I/O mouth input Men district signal, is forced throw-over signal by software, exports absolute position signal to electric life controller simultaneously; When elevator occurs having a power failure while losing elevator car position signal, can be by door district signal, force the absolute position signal point of throw-over signal combination, regain the position of lift car.
Further, described up throw-over switch or the descending throw-over switch that forces of forcing disconnects at whole hoistway signal subsection; And above-mentioned switch disconnects in not gate district and disconnecting at end station, and in hoistway, separated Shi Men district disconnects.
Further, described shaping circuit is the circuit that sinusoidal waveform is changed into square wave on Schmidt trigger basis, and in the time inputting sinusoidal signal higher than the positive inverse values of Schmidt trigger, square wave mouth obtains high level; In the time that input sinusoidal signal is born inverse values lower than binary pair, square wave mouth is low level; The frequency of square wave mouth is identical with the frequency of input sine wave signal.
Further, described hoistway signal acquisition controller adopts AVR embedded scm.
The principle of sectional type elevator hoistways signal pickup assembly described in the utility model is as follows: utilize the sine and cosine ripple signal of the sine and cosine encoder output being arranged on permanent-magnet gearless turbin generator axle to originate as elevator car position signal, by follow-up digitizer, cosine and sine signal is shaped to square wave output, by the software processing to square wave count pulse, sectional type hoistway signalling apparatus output absolute position signal is to elevator main controller, thus the position probing of realization to lift car.Wherein the cosine and sine signal of sine and cosine encoder output must first carry out Shape correction.Guarantee accuracy and the safety of elevator position, that at elevator hoistways Mei Cengmen district switch and elevator operation end station will be installed forces throw-over signal switch.
Sectional type elevator hoistways signal pickup assembly control method and innovation:
Elevator sectional type hoistway signal pickup assembly is in the time that elevator normally moves, and generally the hoistway signal processing method based on incremental encoder is similar.
1. increment sine and cosine burst process:
Produce the pulse of increment sine and cosine by the sine and cosine encoder being arranged on motor shaft, this pulse access elevator traction machine is driven to frequency converter, by the frequency divider of frequency converter, align cosine impulse and carry out frequency division.Pulse access elevator sectional type hoistway signal picker after frequency division.
2. elevator service direction judgement:
In elevator sectional type hoistway signal picker, first program should process elevator service direction, and the sine and cosine impulse singla after frequency division, by the waveform shaping circuit on collector, is shaped to square wave, is conducive to signal processing.By the Phase Processing of the square-wave signal to after shaping, judge the service direction of elevator.
3. divided pulse unit length is calculated:
In order truly to reflect the operation height of elevator or the position of elevator, in collector program, also need to carry out the length computation of unit impulse.By the counting of unit impulse length computation and paired pulses, can obtain operation height or the elevator position of elevator, can also detect hoistway and force the installation correctness of throw-over switch simultaneously.
4. elevator hoistways information self study:
Installing after the upper and lower correcting switch of hoistway, door district switch, each switch terminal of exact connect ion, coder connection lead, frequency converter divider ratio is set, is arranging after electric life controller correlation parameter, elevator should be able to self study operation.Therefore, in elevator sectional type hoistway signal picker, establishment has self study program, obtains each switching information in hoistway by self study program, and Ru Men district switch, forces throw-over, correcting switch etc.And self study data are saved to E
2pROM.
5. the normal operation of elevator.
6. elevator is proofreaied and correct operation:
It is when after elevator loss hoistway data that elevator is proofreaied and correct operation, the function that must realize, and it must give the actual position of elevator for change.Elevator is proofreaied and correct operation and can upwards be proofreaied and correct, and also can proofread and correct downwards, and hoistway signal picker program, by losing the state before hoistway data, judges and proofreaies and correct service direction, to obtain absolute location correction signal within the shortest time.
When elevator in service, because being disturbed or when other factors cause elevator hoistways signal seriously to distort, elevator must stop immediately and proofread and correct operation.
7. the setting of elevator program parameters:
On man-machine interaction circuit, be provided with (-), (+), (CR), (END) four hot keys, the function of four hot keys is the isoparametric setting of correcting switch distance, as functions such as the removings of the startup of self study, self study parameter.
8. sectional type elevator hoistways signal pickup assembly communication:
The data exchange of the realization of establishment communication program and elevator primary controller.
The beneficial effects of the utility model are embodied in: cost performance is higher, can comparatively fast find out the hoistway signal that elevator is lost, thereby improve the operating efficiency of elevator
Accompanying drawing explanation
Elevator hoistways signal impulse figure when Fig. 1 is 4 magnet contactores.
Fig. 2 is the elevator applications system of the hoistway signal pickup assembly based on incremental encoder.
Fig. 3 is the erection plan of absolute value encoder in elevator hoistways.
Wherein, 1 ' is absolute value encoder, and 2 ' is timing belt, and 3 ' is spring.
Fig. 4 is the signal schematic representation of the utility model sine and cosine encoder output.
Fig. 5 is the closed and disconnected view of three switches of the utility model, and wherein vertical line black line segment represents switch closure, and all the other are switch off state (in frame, on off state variation has uniqueness in whole hoistway on-off signal changes).
Fig. 6 is the utility model sectional type elevator hoistways signal pickup assembly frame diagram.
Fig. 7 is the utility model shaping circuit schematic diagram.
Fig. 8 is the utility model hoistway signal acquisition controller power-supply system figure.
Fig. 9 is the utility model hoistway signal acquisition controller variable-frequency pulse input circuit
Figure 10 is the communicating circuit schematic diagram between the utility model hoistway signal acquisition controller and electric life controller.
Figure 11 is the on-off signal input schematic diagram (change by force, door district signal input circuit) of the utility model hoistway signal acquisition controller.
Figure 12 is the utility model hoistway signal acquisition controller man-machine interaction circuit.
Figure 13 a is the utility model sectional type elevator hoistways signal pickup assembly electric diagram A.
Wherein, the span of I: 1000,, 150,1100,1150,1200,1250.。。。，6750,6800,6850,6900,6950,6900,6950,7000
S1A: upper correcting switch
S2A: lower correcting switch
MQ: door district switch
In shadow region representation switch closure.
Figure 13 b is the utility model lift car counterweight operation schematic diagram.
The specific embodiment
With reference to Fig. 4 to Figure 13 b, sectional type elevator hoistways signal pickup assembly, comprise three phase worker power 1, permanent-magnet gearless wheel synchro traction machine 2, elevator primary controller 3, frequency converter 4, with the hoistway signal acquisition controller 5 of self-learning function, also comprise the sine and cosine encoder 6 being arranged on towing machine motor shaft, be arranged on each floor Shang Men district's switch of elevator hoistways and be arranged in elevator operation, up throw-over switch and the descending throw-over switch that forces of forcing at station, lower end, described electric life controller and described frequency converter interconnect, described sine and cosine encoder is connected with the input end of the frequency division plate 7 of described frequency converter by shaping circuit, the mouth of the frequency division plate of described frequency converter is connected by variable-frequency pulse input circuit with the input end of described hoistway signal acquisition controller, the input end of described hoistway signal acquisition controller is connected with described Men district switch, up throw-over switch and the descending throw-over on-off signal that forces of forcing, and the mouth of described hoistway signal acquisition controller is connected by communicating circuit with the input end of described electric life controller, the input end of described electric life controller is connected with call, function, status signal signal, and the mouth of described electric life controller is replied with call, floor display is connected, described Men district switch, up throw-over switch and the descending on off state that forces throw-over switch of forcing have uniqueness in whole hoistway on-off signal changes,
The sine and cosine ripple signal of described sine and cosine encoder output is as the signal source of elevator car position, sine and cosine encoder sine wave output differential signal, by shaping circuit, sinusoidal waveform differential signal is converted to square-wave signal and exports to the frequency division plate of frequency converter, the frequency division of the frequency division plate by frequency converter is processed output frequency division signal to hoistway signal acquisition controller, hoistway signal acquisition controller is processed divided pulse and I/O mouth input Men district signal, is forced throw-over signal by software, exports absolute position signal to electric life controller simultaneously; When elevator occurs having a power failure while losing elevator car position signal, can be by door district signal, force the absolute position signal point of throw-over signal combination, regain the position of lift car.
Further, described up throw-over switch or the descending throw-over switch that forces of forcing disconnects at whole hoistway signal subsection; And above-mentioned switch disconnects in not gate district and disconnecting at end station, and in hoistway, separated Shi Men district disconnects.
Further, described shaping circuit is the circuit that sinusoidal waveform is changed into square wave on Schmidt trigger basis, and in the time inputting sinusoidal signal higher than the positive inverse values of Schmidt trigger, square wave mouth obtains high level; In the time that input sinusoidal signal is born inverse values lower than binary pair, square wave mouth is low level; The frequency of square wave mouth is identical with the frequency of input sine wave signal.
Further, described hoistway signal acquisition controller adopts AVR embedded scm.
The principle of sectional type elevator hoistways signal pickup assembly described in the utility model is as follows: utilize the sine and cosine ripple signal of the sine and cosine encoder output being arranged on permanent-magnet gearless turbin generator axle to originate as elevator car position signal, by follow-up digitizer, cosine and sine signal is shaped to square wave output, by the software processing to square wave count pulse, sectional type hoistway signalling apparatus output absolute position signal is to elevator main controller, thus the position probing of realization to lift car.Wherein the cosine and sine signal of sine and cosine encoder output must first carry out Shape correction.Guarantee accuracy and the safety of elevator position, that at elevator hoistways Mei Cengmen district switch and elevator operation end station will be installed forces throw-over signal switch.
The utility model has been installed three switches in hoistway, as shown in Figure 5, is respectively up throw-over switch, the descending throw-over switch He Men district switch that forces of forcing.In figure take elevator floor height as 8 floors are as example.The closed and disconnected state that there is shown three switches, vertical line black line segment represents switch closure, all the other are switch off state.In conjunction with the on off mode of three hoistway switches, can obtain elevator on off state when diverse location in hoistway.From whole hoistway, different elevator position on off states can be found out, there is the on off state of 7 positions to change, no matter ascending for elevator or descending, it changes in all on off states change is unique, and they are respectively (101) and (100), (111) and (011), (011) and (001), (001) and (101), (100) and (101), (101) and (111), (110) and (010).
In the time of elevator power failure, elevator has been lost the position signal of car, and elevator main controller is sent correction run signal, elevator is started and proofread and correct operation, to regain elevator car position.There are above-mentioned 7 absolute location states, elevator is proofreaied and correct operation just not to be needed to go to proofread and correct to two end stations of elevator, can be proofreaied and correct by any one location status in 7 absolute location states, so greatly shorten elevator and proofreaied and correct the stroke of operation, also greatly shortened elevator and proofreaied and correct the time of moving simultaneously, the operating efficiency of elevator is improved, can compares favourably with absolute value encoder hoistway signal, its running velocity also can be up to 2.5m/s(up to the present).
Elevator sectional type hoistway signal, wherein descending throw-over on-off signal or the up throw-over on-off signal that forces of forcing disconnects at whole hoistway signal subsection, and this is the source of " sectional type hoistway signal " title.By segmentation, some groups of unique hoistway signal intensity nodes in hoistway ensemble are obtained.The segmentation that forces throw-over on-off signal is to affect the force throw-over of elevator at upper and lower two end stations; because it is distinguishing forcing the disconnection of throw-over on-off signal separated in end station and hoistway; force throw-over on-off signal to disconnect and disconnecting in not gate district at end station; and separated Shi Men district disconnects in hoistway; so be unchallenged as the identification that forces throw-over signal, elevator moves to two end stations will inevitably obtain forcing the protection of throw-over switch and ramp to stop.
Figure 6 shows that elevator sectional type hoistway signal pickup assembly hardware system block diagram, be arranged on the sine and cosine encoder output 1V on permanent-magnet synchnorous gearless dragging machine
p-psinusoidal waveform differential signal, converts sine wave signal to square-wave signal output by the shaping circuit shown in Fig. 7.Process output frequency division signal to hoistway signal acquisition controller by the frequency division of frequency converter, hoistway signal acquisition controller is processed divided pulse and I/O mouth input Men district signal, is forced throw-over signal by software, exports absolute position signal to electric life controller simultaneously.When elevator occurs having a power failure while losing elevator car position signal, can be by door district signal, force the absolute position signal point of throw-over signal combination, proofread and correct at short notice the position that regains lift car.
Shaping circuit shown in Fig. 7 is the circuit that the sinusoidal waveform that designs on the basis of Schmidt trigger converts square wave to, in the time inputting sinusoidal signal higher than the positive inverse values of Schmidt trigger, square wave mouth obtains high level, and in the time that input sinusoidal signal is born inverse values lower than binary pair, square wave mouth is low level.The frequency of square wave mouth is with the frequency of input sine wave signal.The operation point of binary pair regulates by potential device RP, and output adopts Darlington output, and exports from the emitter-base bandgap grading of Darlington, can make like this this circuit have lower output resistance.The amplitude of output square wave can regulate with potential device RP2.
Fig. 8 is hoistway signal acquisition controller power-supply system, and power-supply system is by outside input 24V direct supply, need direct supply+24V and+5V for system.5V power supply is changed and is obtained by power conversion chip 33063 by 24V power supply, and its power quality is better.
Fig. 9 is hoistway signal acquisition controller variable-frequency pulse input circuit.After frequency converter frequency division, inputted hoistway signal acquisition controller by the encoder pulse after shaping circuit shaping.Divided pulse input hoistway signal acquisition controller by isolation light-coupled isolation after input microprocessor AT90S8515, by microprocessor records number of pulses.Isolation optocoupler adopts NEC2501.
Figure 10 is hoistway signal acquisition controller and elevator main controller communicating circuit.Hoistway signal acquisition controller will obtain elevator absolute location value after frequency converter divided pulse is processed, and pass through RS485 communication transfer to elevator main controller.
Figure 11 is the input of hoistway signal acquisition controller on-off signal.These on-off signals comprise the input that forces up and down throw-over switching value signal, floor door district signal.Incoming signal is by TLP521-4 light-coupled isolation input microcontroller AT90S8515.
Figure 12 is hoistway signal acquisition controller man-machine interaction circuit.In figure, be provided with 4 inching buttons, its effect is for carrying out parameter setting and the self study of elevator hoistways signal." CR " is acknowledgement key; "+" is data increase key; "-" is data minimizing key; " END " is ESC Escape.
The utility model hoistway signal acquisition controller adopts the AT90S8515 of atmel corp microprocessor, is a Low-Power CMOS 8-bit microprocessor.Hoistway signal acquisition controller software adopts AVR embedded scm assembly language to work out.Software is mainly realized following basic function:
◆ possess self-learning function: upwards reach the level position of uppermost storey at 1 layer of level position, can complete hoistway position self study;
◆ elevator hoistways absolute location recognition function: lose after hoistway signal when elevator, by hoistway switch He Men district information, again give elevator position for change;
◆ self-correcting function: when power failure or hand turning back door district on off state change in the time that elevator moves, will automatically enter self-correcting state after powering on;
◆ the error correction that frequency converter integral frequency divisioil brings;
◆ calculate the unit distance of pulse;
◆ program parameters arranges function;
◆ communication function.
Once elevator enters correction running state, must again obtain the absolute location information of elevator within a short period of time.(take 8 floor elevators as example) as shown in Figure 5, in whole hoistway information, there is the upset of 7 groups of on-off states to change, no matter be that ascending for elevator is proofreaied and correct or descending correction operation, its rollover states is unique, once obtain unique upset information, elevator can stop at next one station, and obtains floor information.These group data of for example (111) and (011), if ascending for elevator, descending switch, the up state that changes by force switch He Men district switch of changing is by force by being transformed into (111) by (011), this state transformation is unique in whole hoistway information change, compare with the data information that prestores of device, can obtain floor information for " 6th floors ", elevator can proofread and correct running velocity 7th floors parkings, and again drops into normal elevator operation.
Certainly, elevator must be proofreaied and correct with certain correction running velocity.Whole hoistway information is divided into two sections, can realize the correction of elevator position in each section of hoistway information.This is the innovation place of sectional type elevator hoistways signal pickup assembly.
Content described in this specification sheets embodiment is only enumerating of way of realization to inventive concept; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also and conceive the equivalent technologies means that can expect according to the utility model in those skilled in the art.
Claims (4)
1. sectional type elevator hoistways signal pickup assembly, comprise three phase worker power, permanent-magnet gearless wheel synchro traction machine, elevator primary controller, frequency converter, with the hoistway signal acquisition controller of self-learning function, it is characterized in that: also comprise the sine and cosine encoder being arranged on towing machine motor shaft, be arranged on each floor Shang Men district's switch of elevator hoistways and be arranged in elevator operation, up throw-over switch and the descending throw-over switch that forces of forcing at station, lower end, described electric life controller and described frequency converter interconnect, described sine and cosine encoder is connected with the input end of the frequency division plate of described frequency converter by shaping circuit, the mouth of the frequency division plate of described frequency converter is connected by variable-frequency pulse input circuit with the input end of described hoistway signal acquisition controller, the input end of described hoistway signal acquisition controller is connected with described Men district switch, up throw-over switch and the descending throw-over on-off signal that forces of forcing, and the mouth of described hoistway signal acquisition controller is connected by communicating circuit with the input end of described electric life controller, the input end of described electric life controller is connected with call, function, status signal signal, and the mouth of described electric life controller is replied with call, floor display is connected, described Men district switch, up throw-over switch and the descending on off state that forces throw-over switch of forcing have uniqueness in whole hoistway on-off signal changes.
2. sectional type elevator hoistways signal pickup assembly as claimed in claim 1, is characterized in that: described up throw-over switch or the descending throw-over switch that forces of forcing disconnects at whole hoistway signal subsection; And above-mentioned switch disconnects in not gate district and disconnecting at end station, and in hoistway, separated Shi Men district disconnects.
3. sectional type elevator hoistways signal pickup assembly as claimed in claim 2, it is characterized in that: described shaping circuit is the circuit that sinusoidal waveform is changed into square wave on Schmidt trigger basis, in the time inputting sinusoidal signal higher than the positive inverse values of Schmidt trigger, square wave mouth obtains high level; In the time that input sinusoidal signal is born inverse values lower than binary pair, square wave mouth is low level; The frequency of square wave mouth is identical with the frequency of input sine wave signal.
4. sectional type elevator hoistways signal pickup assembly as claimed in claim 3, is characterized in that: described hoistway signal acquisition controller adopts AVR embedded scm.
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| CN201320459128.5U CN203593484U (en) | 2013-07-30 | 2013-07-30 | Sectional-type lift shaft signal collector |
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| CN201320459128.5U CN203593484U (en) | 2013-07-30 | 2013-07-30 | Sectional-type lift shaft signal collector |
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| CN203593484U true CN203593484U (en) | 2014-05-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104386547A (en) * | 2014-09-12 | 2015-03-04 | 快意电梯股份有限公司 | Elevator limiting method |
| CN104743421A (en) * | 2015-03-19 | 2015-07-01 | 深圳市海浦蒙特科技有限公司 | Elevator powering-down position anomaly detection method and system |
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2013
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104386547A (en) * | 2014-09-12 | 2015-03-04 | 快意电梯股份有限公司 | Elevator limiting method |
| CN104386547B (en) * | 2014-09-12 | 2016-08-24 | 快意电梯股份有限公司 | Elevator limit method |
| CN104743421A (en) * | 2015-03-19 | 2015-07-01 | 深圳市海浦蒙特科技有限公司 | Elevator powering-down position anomaly detection method and system |
| CN104743421B (en) * | 2015-03-19 | 2017-03-08 | 深圳市海浦蒙特科技有限公司 | Elevator power down malposition detection method and system |
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