CN102190222A - Brake control device for elevator - Google Patents
Brake control device for elevator Download PDFInfo
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- CN102190222A CN102190222A CN2011100488420A CN201110048842A CN102190222A CN 102190222 A CN102190222 A CN 102190222A CN 2011100488420 A CN2011100488420 A CN 2011100488420A CN 201110048842 A CN201110048842 A CN 201110048842A CN 102190222 A CN102190222 A CN 102190222A
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Abstract
The present invention provides a brake control device for an elevator, which is provided with a brake control part (20) that energizes a first brake coil and a second brake coil (5a,5b) for performing energization and cutoff control for semiconductor switches (11a,11b) so one part of a period of energizing the first brake coil is overlapped with one part of a period of energizing the second brake coil. After energization and cutoff is started, motion start of each brake sheet (17a,17b) is determined according to the detection result which is detected by a current detector (25). Along with the determination, the energization and shutoff control is performed for the semiconductor switch so the current value of each brake coil is smaller than that in determination.
Description
Technical field
The present invention relates to the braking force control system of elevator that brake equipment is controlled, this brake equipment carries out the braking maneuver that winch etc. is braked body.
Background technology
Figure 16 is the figure of structure example of circuit of the braking force control system of the existing elevator of expression.Figure 17 A, Figure 17 B, Figure 17 C are the figure of an example of output wave shape of the braking force control system of the existing elevator of expression.
The electro-magnetic braking device of elevator (for example, with reference to patent documentation 1 and patent documentation 2) as shown in figure 16, the circuit series that comprises direct supply 41, mechanical first switch (S1) 44 and restraining coil 45, this electro-magnetic braking device utilize brake plate that winch etc. is braked body mechanically to carry out braking maneuver.The circuit series of direct supply 42 and mechanical second switch (S2) 43 and first switch 44 are connected in parallel.Flywheel sychronising (flywheel) circuit 46 is connected in parallel with restraining coil 45.Produce electro-motive force E1 by direct supply 42.Produce electro-motive force E2 by direct supply 41.
Under the situation that restraining coil 45 is not energized, the not shown brake plate of electro-magnetic braking device is release position.By the effect of not shown retarding spring, brake plate is pushed the brake surface that is braked body.So, braking maneuver becomes effective.In addition, under the situation that restraining coil 45 has been switched on, brake plate is attracted from the brake surface that is braked body.So, braking maneuver becomes releasing.
For shorten the self-control moving plate by from be braked body attract beginning to this brake plate by from being braked the time till body attracts to finish, adopt following method usually, that is, apply than the big voltage of sustaining voltage that keeps brake plate to be attracted to restraining coil 45.
Under the situation that the initial condition that makes drg is a brake plate to the release position that are braked body and push, first switch 44 and second switch 43 are off-state.With brake plate under the situation that is braked body and attracts, braking force control system at first switches to conducting state with second switch 43 shown in Figure 17 C.Thus, shown in Figure 17 A, with the voltage of E1 and E2 sum equivalence as than keeping brake plate to be attracted the big voltage of needed sustaining voltage and being applied on the restraining coil 45.Shown in Figure 17 B, the electric current of restraining coil 45 rises to current value I 1 according to time constant.This current value rises to current value I 1 and the attraction of brake plate begins, and meanwhile behind this current value I 1 temporary transient decline, rises to the I2 bigger than this current value I 1.
Then, braking force control system shown in Figure 17 C, when first switch 44 is switched to conducting state, returns to off-state with the second switch device through behind the certain hour.Under this state, apply magnitude of voltage shown in Figure 17 A, equate that with E1 utilize the attraction state that keeps brake plate based on the sustaining voltage of direct supply 42, shown in Figure 17 B, the electric current of restraining coil 45 is reduced to current value I 1.
Then, shown in Figure 17 C, when the electromagnetic braking control setup makes first switch 44 return to off-state, restraining coil 45 is not applied in voltage, and the state of drg is got back to the release position of narrating previously, and shown in Figure 17 B, the electric current of restraining coil 45 reduces according to time constant, when the release of brake plate finishes, temporarily rise and minimizing, disappear afterwards.
In aforesaid electromagnetic braking control setup, need a plurality of power supplys and switch.The switch of elevator is large-scale, and it is big therefore area to be set.In addition, the contact of mechanical switch etc. are the meeting deterioration for a long time, and therefore in order to keep performance need frequent conservative check and exchange, consequent expense is a lot.
In addition, in the release movement of the brake plate that carries out electro-magnetic braking device with attract under the situation of action, from action begin very big action noise can take place till finishing, bring unplessantness displeasure to the passenger, therefore wish to reduce this noise.
Therefore, the objective of the invention is to, the braking force control system of the elevator of the braking maneuver that can suitably be braked body is provided.
Summary of the invention
Invent problem to be solved
The objective of the invention is to, the braking force control system of the elevator of the braking maneuver that can suitably be braked body is provided.
The means that are used to deal with problems
The present invention is applicable to a kind of braking force control system of elevator, and it possesses: rectifying circuit, and it will be converted to direct current (DC) from the alternating current that exchanges power supply; Smooth condenser, its will in described rectifying circuit, change and galvanic pulsation smoothing; First circuit series, in parallel diode and semiconductor switch are connected in series with described smooth condenser, and, the anode of this diode is connected with the active potential point of described smooth condenser, and described semiconductor switch is connected between the negative electrode of the high potential point of described smooth condenser and described diode; Second circuit series, in parallel diode and semiconductor switch are connected in series with described smooth condenser, and, the negative electrode of this diode is connected with the high potential point of described smooth condenser, and described semiconductor switch is connected between the anode of the active potential point of described smooth condenser and described diode; First restraining coil, it is connected between the anode of diode of the negative electrode of diode of described first circuit series and described second circuit series; Second restraining coil, itself and described first restraining coil are connected in parallel; First brake plate, it is braked the mechanical braking action of body when the non-energising of described first restraining coil, when described first restraining coil is switched on, the described braking maneuver that is braked body is removed; Second brake plate, it is braked the mechanical braking action of body when the non-energising of described second restraining coil, when described second restraining coil is switched on, the described braking maneuver that is braked body is removed; Current probe, its current value to described first restraining coil and second restraining coil detects; And brake control section, it is to described first restraining coil and the energising of second restraining coil, semiconductor switch to described first circuit series and second circuit series is switched on, end control so that overlapping to the part during the energising that the semiconductor switch of described first circuit series is switched on and the part during the energising that the semiconductor switch of described second circuit series is switched on, this energising, after the control beginning, according to judging that by the detected testing result of described current probe the action of described first brake plate and second brake plate begins, be accompanied by this judgement, the semiconductor switch of described first circuit series and second circuit series is switched on, by control so that the current value ratio of described first restraining coil and second restraining coil reduces when judging.
Description of drawings
Fig. 1 is the figure of the circuit structure example of the braking force control system of elevator in expression first embodiment of the present invention.
Fig. 2 is the diagram of circuit of an example of the action of the braking force control system of elevator in expression first embodiment of the present invention.
Fig. 3 is the figure of an example of the various waveforms of the braking force control system of elevator in expression first embodiment of the present invention.
Fig. 4 is the figure of the circuit structure example of the braking force control system of elevator in expression second embodiment of the present invention.
Fig. 5 is the diagram of circuit of an example of the action of the braking force control system of elevator in expression second embodiment of the present invention.
Fig. 6 is the figure of the circuit structure example of the braking force control system of elevator in expression the 3rd embodiment of the present invention.
Fig. 7 is the diagram of circuit of an example of the action of the braking force control system of elevator in expression the 4th embodiment of the present invention.
Fig. 8 A is the figure of an example of the output wave shape of the braking force control system of elevator in expression the 4th embodiment of the present invention.
Fig. 8 B is the figure of an example of the output wave shape of the braking force control system of elevator in expression the 4th embodiment of the present invention.
Fig. 9 is the figure of the circuit structure example of the braking force control system of elevator in expression the 5th embodiment of the present invention.
Figure 10 is the diagram of circuit of an example of the action of the braking force control system of elevator in expression the 5th embodiment of the present invention.
Figure 11 is the figure of the circuit structure example of the braking force control system of elevator in expression the 6th embodiment of the present invention.
Figure 12 is the figure of the structure example of the circuit of the braking force control system of elevator in expression the 6th embodiment of the present invention.
Figure 13 is the diagram of circuit of an example of the action of the braking force control system of elevator in expression the 6th embodiment of the present invention.
Figure 14 is the figure of an example of the output wave shape of the braking force control system of elevator in expression the 6th embodiment of the present invention.
Figure 15 is the figure of an example of the output wave shape of the braking force control system of elevator in expression the 6th embodiment of the present invention.
Figure 16 is the figure of configuration example of circuit of the braking force control system of the existing elevator of expression.
Figure 17 A is the figure of an example of output wave shape of the braking force control system of the existing elevator of expression.
Figure 17 B is the figure of an example of output wave shape of the braking force control system of the existing elevator of expression.
Figure 17 C is the figure of an example of output wave shape of the braking force control system of the existing elevator of expression.
The specific embodiment
An embodiment of the invention are described below with reference to the accompanying drawings.
(first embodiment)
At first, first embodiment of the present invention is described.
Fig. 1 is the figure of circuit structure example of braking force control system of the elevator of expression an embodiment of the invention.
In braking force control system shown in Figure 1, the alternating current of supplying with from source of AC 1 is a direct current (DC) by biphase rectification rectifying circuit 2, in smooth condenser 7, and galvanic smoothedization of pulsation.
As shown in Figure 1, be provided with control of braking microcomputer 20 in this braking force control system, this control of braking microcomputer 20 is voltage that applies regulation to various elements or the brake control section that various switches are opened and closed.
In addition, between the high potential point of the high potential point of the outgoing side of rectifying circuit 2 and smooth condenser 7, be provided with the circuit parallel of limiting resistance 3 and dc switch 4.This circuit is provided with in order to carry out level and smooth charging to smooth condenser 7.Under the situation that this smooth condenser 7 is not recharged, braking force control system makes dc switch 4 be off-state, charges by 3 pairs of smooth condensers 7 of limiting resistance.Then, braking force control system makes dc switch 4 power for conducting state.
At the two ends of smooth condenser 7, be provided with first circuit series that constitutes by on-off element (switching element) 11a and diode (diode) 12a as power semiconductor switch.In addition, at the two ends of smooth condenser 7, be provided with second circuit series that constitutes by on-off element 11b and diode 12b.Constitute buck circuit by these circuit seriess.
In the present embodiment, on-off element 11a, 11b are IGBT (Insulated Gate BipolarTransistor: igbt).The collecting electrode of on-off element 11a (collevtor) is connected with the high potential point of smooth condenser 7.The emitter of on-off element 11a (emitter) is connected with the negative electrode (cathode) of diode 12a.The anode of diode 12a (anode) is connected with the active potential point of smooth condenser 7.
The reversed in order of the order of each element of second circuit series and each element of first circuit series.Particularly, the negative electrode of diode 12b is connected with the high potential point of smooth condenser 7.In addition, the collecting electrode of on-off element 11b is connected with the anode of diode 12b.In addition, the emitter of on-off element 11b is connected with the active potential point of smooth condenser 7.
Control of braking microcomputer 20 by the grid to on-off element 11a, 11b carry out based on PWM (PulseWidth Modulation: voltage pulse width modulation) applies, be used for brake switch energising, by control.
Between the intermediate terminal of the intermediate terminal of on-off element 11a and diode 12a and on-off element 11b and diode 12b, be connected with the circuit parallel of the first restraining coil 5a and the second restraining coil 5b.Be connected with flywheel circuit 6 at the two ends of restraining coil 5b.As shown in Figure 1, the pulley (sheave) 16 that is hung as the winch 13 and the main cable that are braked body is connected, and this main cable is connected car (car) 14 with counterweight (counter weight) 15.
Under the situation that restraining coil 5a does not switch on, the first brake plate 17a of winch 13 is release position, and by the effect of not shown retarding spring, the first brake plate 17a pushes the brake surface of winch 13, and the braking maneuver of winch 13 becomes effectively.Under the situation that restraining coil 5a is energized, the first brake plate 17a is attracted by the brake surface from winch 13, and the braking maneuver of winch 13 becomes releasing.
In addition, under the situation that restraining coil 5b is not energized, the second brake plate 17b of winch 13 is release position, and by the effect of retarding spring, the second brake plate 17b is by on the brake surface that is pressed in winch 13, and the braking maneuver of winch 13 becomes effectively.Under the situation that restraining coil 5b is energized, the second brake plate 17b is attracted by the brake surface from winch 13, and the braking maneuver of winch 13 becomes releasing.
Then, the action to the braking force control system of the elevator of structure shown in Figure 1 describes.
Fig. 2 is the diagram of circuit of an example of the action of the braking force control system of elevator in expression first embodiment of the present invention.
Fig. 3 is the figure of an example of the various waveforms of the braking force control system of elevator in expression first embodiment of the present invention.
Control of braking microcomputer 20 utilizes PWM control to apply the voltage of regulation to on-off element 11a, 11b, and each that makes on-off element 11a, 11b alternately becomes conducting state (step S1) according to some cycles.
In example shown in Figure 3, control of braking microcomputer 20, in the output of PWM carrier signal, with some cycles to on-off element 11a output action instruction P+.Further, control of braking microcomputer 20 with the cycle identical with action command P+ to on-off element 11b output action command N-, make during the energising of a part during the energising of on-off element 11a and on-off element 11b overlappingly, and make during the energising of other parts during the energising of on-off element 11a and on-off element 11b not overlapping.
As shown in Figure 3, the voltage Vf that is applied to restraining coil 5a, 5b action command P+ and N-be the H level during become the H level.Promptly, be the timing of conducting state at on-off element 11a, 11b, restraining coil 5a, 5b become conducting state (step S2), become the electromagnetic braking disarm state (step S3) that brake plate 17a, 17b are attracted from the brake surface of winch 13, the braking maneuver of winch 13 is removed.Under the situation of restraining coil 5a, 5b energising, electric current flows according to the circuit parallel of on-off element 11a, restraining coil 5a, 5b, the order of on-off element 11b.
And, need make under the braking maneuver actv. situation (step S4 is) of winch 13 when car stops etc., control of braking microcomputer 20 stops to apply voltage to on-off element 11a, 11b, and each that makes on-off element 11a, 11b is off-state (step S5).
Thus, restraining coil 5a, 5b become not the state (step S6) of energising, become brake plate 17a, 17b by on the brake surface that is pressed in winch 13, the braking maneuver actv. electromagnetic braking mode of operation (step S7) of winch 13.Becoming under the situation that restraining coil 5a, 5b do not switch on, the energy that is accumulated among restraining coil 5a, the 5b is emitted consumption by flywheel circuit 6.
As mentioned above, in the braking force control system of the elevator of first embodiment of the present invention, by a plurality of combinations of the circuit series of on-off element and diode are formed buck circuit, the conducting of carrying out on-off element disconnects control, carry out thus restraining coil energising, by control, thereby braking maneuver is controlled.
As in the past, in the energising of carrying out restraining coil by the on-off action that carries out mechanical switch, under the situation of control, there is the big and short such problem of life-span of action noise of switch.But, in the present embodiment, use on-off element to replace mechanical switch, by they are carried out conducting disconnect control carry out the energising of restraining coil, by control, so action noise significantly reduced, also can prolong significantly device lifetime.
Yet, become short-circuit mode when the fault as the power semiconductor of on-off element more, but in the present embodiment, be provided with 2 groups of on-off elements, even therefore taken place under the situation of short trouble at one group of on-off element, also can will flow to the current cut-off of restraining coil by making another group on-off element become off-state, therefore can guarantee reliability.
(second embodiment)
Then, second embodiment of the present invention is described.In addition, below the structure of braking force control system of each embodiment and shown in Figure 1 roughly the same substantially, therefore omit explanation with a part.
Fig. 4 is the figure of the circuit structure example of the braking force control system of elevator in expression second embodiment of the present invention.
As shown in Figure 4, in second embodiment of the present invention, with first embodiment relatively, also possess the piezoelectric detector 23a that the both end voltage to diode 12a detects.In addition, also possesses the piezoelectric detector 23b that the both end voltage to diode 12b detects.In addition, also possesses the alternating-current switch 24 that is used to disconnect source of AC 1.
Fig. 5 is the diagram of circuit of an example of the action of the braking force control system of elevator in expression second embodiment of the present invention.
In this embodiment, different with the action of explanation in the first embodiment, control of braking microcomputer 20 detects the both end voltage of diode 12a via piezoelectric detector 23a, and, via piezoelectric detector 23a the both end voltage of diode 12b is detected (step S21).
And, control of braking microcomputer 20 is according to PWM carrier signal, action command P+, with voltage-target with compare by the detected detected value of piezoelectric detector 23a, this voltage-target is not for to have under the situation of operation irregularity at on-off element 11a, will produce the magnitude of voltage that the timing of voltage will produce in diode 12a.
In addition, control of braking microcomputer 20 is according to PWM carrier signal, action command N-, with voltage-target with compare (step S22) by the detected detected value of piezoelectric detector 23b, this voltage-target is not for to have under the situation of operation irregularity at on-off element 11b, will produce the magnitude of voltage of the diode 12b that the timing of voltage will produce in diode 12b.
When there is deviation more than the certain value in control of braking microcomputer 20 between detected value that is detected by piezoelectric detector 23a and voltage-target, can detects on-off element 11a operation irregularity takes place.In addition, when there is deviation more than the specified value in control of braking microcomputer 20 between detected value that is detected by piezoelectric detector 23b and expected value, can detects on-off element 11b operation irregularity takes place.
Control of braking microcomputer 20 disconnects (step S24) by alternating-current switch 24 is disconnected with source of AC when detecting on-off element 11a, 11b generation operation irregularity (step S23 is).
Thus, restraining coil 5a, 5b become the not state of energising, and brake plate 17a, 17b are pressed against on the brake surface of winch 13, and the state of drg becomes the braking maneuver actv. electromagnetic braking mode of operation (step S25) of winch 13.
As mentioned above, in the braking force control system of the elevator of second embodiment of the present invention, except the feature of explanation in the first embodiment, because in voltage detecting value based on the diode 12a, the 12b that detect by piezoelectric detector 23a, 23b, when detecting on-off element 11a, 11b generation operation irregularity, make source of AC 1 open circuited action, therefore even produce operation irregularity and be under the situation of short-circuit condition at on-off element 11a, 11b, also can improve the safety of elevator operation, can guarantee reliability.
(the 3rd embodiment)
Then, the 3rd embodiment of the present invention is described.
Fig. 6 is the figure of the circuit structure example of the braking force control system of elevator in expression the 3rd embodiment of the present invention.
As shown in Figure 6, in the 3rd embodiment of the present invention, compare, between restraining coil 5a and on-off element 11b, possess the current probe 25 that is used to detect the electric current of supplying with to restraining coil 5a, 5b with second embodiment.
Control of braking microcomputer 20 is different with the action that illustrates in first embodiment and second embodiment, in PWM control, on-off element 11a, 11b are carried out conducting disconnect control, make between detected value that detects by current probe 25 and expected value, not have deviation that this expected value is the electric current of supplying with to restraining coil 5a, 5b in PWM control.
Magnitude of voltage based on source of AC 1 generally can change ± and about 10%.But,, can eliminate the aforesaid baneful influence that causes by change to the control of braking maneuver by as present embodiment, controlling the electric current of supplying with to restraining coil 5a, 5b.
In addition, in PMW control, the temperature of restraining coil 5a, 5b can rise, the impedance meeting change of restraining coil 5a, 5b.But,, can prevent the change of the electric current of supplying with to restraining coil 5a, 5b that causes by this change by as present embodiment, controlling the electric current of supplying with to restraining coil 5a, 5b.Therefore, always stable attractive force can be kept, baneful influence can be eliminated braking maneuver for brake plate 17a, 17b.
In addition, by the electric current of control flows, can control the pace of change of the electric current of supplying with to restraining coil 5a, 5b to restraining coil 5a, 5b.Therefore, can adjust the speed from beginning to end of attraction or the release of brake plate 17a, 17b.
(the 4th embodiment)
Then, the 4th embodiment of the present invention is described.
The circuit structure of the braking force control system of elevator is identical with the 3rd embodiment in the present embodiment.
Fig. 7 is the diagram of circuit of an example of the action of the braking force control system of elevator in expression the 4th embodiment of the present invention.
Fig. 8 A and Fig. 8 B are the figure of an example of the output wave shape of the braking force control system of elevator in expression the 4th embodiment of the present invention.Fig. 8 A is the figure of current waveform of restraining coil of the general braking force control system of expression elevator.Fig. 8 B is the figure of the current waveform of the restraining coil that is caused by braking maneuver of the braking force control system of elevator in expression the 4th embodiment of the present invention.
In general magnet stopper, when being applied with to restraining coil than the big voltage of the needed sustaining voltage of attraction that keeps brake plate, the current value of restraining coil 5a, 5b has following character shown in Fig. 8 A: rise to current value I 1 according to time constant, after temporarily reducing, rise to the I2 bigger than current value I 1 from this current value I 1.
In the 4th embodiment of the present invention, be conceived to this character, different with the action that in first embodiment to the, three embodiments, illustrates, control of braking coil 20 is by PWM control, and beginning applies than the big voltage (step S31) of the needed sustaining voltage of attraction that keeps brake plate 17a, 17b to on-off element 11a, 11b.In the case, the expected value of the current value of supplying with to restraining coil 5a, 5b is an electric current I 2.
When by applying voltage, after the detected value that is detected by current probe 25 rises to current value I 1, when the minimizing specified value is above (step S32), the attraction that control of braking microcomputer 20 is judged as brake plate 17a, 17b begins, and the voltage that applies to braking element 11a, 11b of control, make the expected value of the current value supplied with to restraining coil 5a, 5b become the value that is lower than current value I 1 as shown in Figure 8, and, make that this expected value is the value (step S33) that is lower than the detected value among the step S32.As a result, the current value of supplying with to restraining coil 5a, 5b further reduces, and the speed till the attraction end of brake plate 17a, 17b is further slack-off.
And control of braking microcomputer 20 makes the change of voltage that applies to on-off element 11a, 11b for keeping the needed sustaining voltage of attraction of brake plate in the timing of the attraction end of brake plate 17a, 17b.In the case, the expected value of the current value of supplying with to restraining coil 5a, 5b rises to current value I 1.
Thus, the current value of supplying with to restraining coil 5a, 5b rises towards current value I 1.By carrying out such control, the current value of supplying with to restraining coil 5a, 5b from the beginning of PWM control with carry out general control and compare step-down.Therefore, be attracted with respect to being braked body, thus to the speed slack-off (step S34) of pushing till the brake surface by brake plate 17a, 17b.
As mentioned above, in the braking force control system of the elevator of the 4th embodiment of the present invention, except the feature of explanation in the first embodiment, when the action of brake plate begins, by the current target value cataclysm on the direction of the action that hinders brake plate that makes restraining coil, the speed of the attraction action of brake plate can be reduced, the action of brake plate can be finished lentamente.Therefore, can reduce to follow the noise and the vibration of the action of brake plate, therefore can not bring unplessantness displeasure to the passenger.
(the 5th embodiment)
Then, the 5th embodiment of the present invention is described.
Fig. 9 is the figure of the circuit structure example of the braking force control system of elevator in expression the 5th embodiment of the present invention.
As shown in Figure 9, in the 5th embodiment of the present invention, compare, also have first brake switch 26a that is connected in series with restraining coil 5a and the second brake switch 26b that is connected in series with restraining coil 5b with the 3rd embodiment.The first brake switch 26a and the second brake switch 26b are by control of braking microcomputer 20 master cocies.
Figure 10 is the diagram of circuit of an example of the action of the braking force control system of elevator in expression the 5th embodiment of the present invention.
Following action is, differentiate when having or not braking maneuver unusual at needs, for example be transformed into the check operation mode from common operation mode in the elevator action pattern, and operate by 20 pairs of not shown operating switchs of control of braking microcomputer, set the action that begins to differentiate under the unusual situation that has or not control action.Usually operation mode is to land the pattern that makes car 14 liftings according to calling.The check operation mode is to utilize M/C to make car 14 pattern of lifting as required.
As initial condition, car 14 stops, and this car 14 is not for there being the no load condition of passenger and goods.Under this state, the first master cock 26a and the second master cock 26b all are disconnected, and not to restraining coil 5a, 5b energising, the braking maneuver of the winch 13 that is undertaken by brake plate 17a, 17b is all effective.
Under this state, control of braking microcomputer 20 is by only being on-state (step S41) with second brake switch 26b closure, to restraining coil 5b supplying electric current, among the first brake plate 17a, the second brake plate 17b only the first brake plate 17a become release position (step S42).
Then, 20 pairs of railway carriage or compartment location informations from elevator control gear of control of braking microcomputer detect (step S43).Control of braking microcomputer 20 surpasses specified value in the position in this railway carriage or compartment and under the situation about changing, is judged as the braking maneuver of being undertaken by the first brake plate 17a and has unusual (step S44 → step S45).In addition, control of braking microcomputer 20 surpasses specified value in the position in railway carriage or compartment and does not have under the situation of change, is judged as the braking maneuver not unusual (step S44 → step S46) of being undertaken by the first brake plate 17a.
After carrying out these judgements, the only closed first brake switch 26a makes it become conducting state (step S47) to control of braking microcomputer 20 by once more the second brake switch 26b being disconnected, to restraining coil 5a supplying electric current, among the first brake plate 17a, the second brake plate 17b only the second brake plate 17b become release position (step S48).
Then, 20 pairs of railway carriage or compartment location informations from elevator control gear of control of braking microcomputer detect (step S49).Control of braking microcomputer 20 surpasses specified value in the position in this railway carriage or compartment and under the situation about changing, is judged as the braking maneuver of being undertaken by the second brake plate 17b and has unusual (step S50 → step S51).In addition, control of braking microcomputer 20 surpasses specified value in the position in railway carriage or compartment and does not have under the situation of change, is judged as the braking maneuver not unusual (step S50 → step S52) of being undertaken by the second brake plate 17b.
As mentioned above, in the braking force control system of the elevator of the 5th embodiment of the present invention, except the feature of explanation in the first embodiment, can also be by only the side among brake switch 26a, the 26b being disconnected, the side's supplying electric current in restraining coil 5a, 5b only thus, can judge has the unusual of braking maneuver that the side among have no way of brake plate 17a, the 17b carries out.Therefore, the maintenance person of elevator can confirm whether the confining force of magnet stopper is kept.
(the 6th embodiment)
Then, the 6th embodiment of the present invention is described.
Figure 11 is the figure of the electric current structure example of the braking force control system of elevator in expression the 6th embodiment of the present invention.
In this embodiment, compare with the 5th embodiment, piezoelectric detector 23a, 23b are not set, and are connected with the primary side terminal of photoelectricity coupling (photo-coupler) 30a of portion at the two ends of diode 12a, be connected with the primary side terminal of photoelectrical coupler 30b at the two ends of diode 12b.
Figure 12 is the figure of the structure example of the circuit of the braking force control system of elevator in expression the 6th embodiment of the present invention.
The braking force control system of present embodiment possesses decision circuit (logicalcircuit) 31a, 31b as shown in figure 12.Decision circuit 31a is connected with elevator control gear 33a via filter (filter) 32a.Filter 32a arrives H level and L level with the voltage level filtering of output signal.In addition, decision circuit 31b is via being connected with elevator control gear 33 with the filter 32b of filter 32a identical function.
Decision circuit 31a, 31b are that R-S triggers (flip-flop) circuit.In the present embodiment, to 2 side terminals of photoelectricity coupling part 30a and the Set terminal input clock signal Q1_CK of decision circuit 31a.In addition, to 2 side terminals of photoelectricity coupling part 30b and the Set terminal input clock signal Q2_CK of decision circuit 31b.The frequency of clock signal Q1_CK and clock signal Q2_CK is from the PWM carrier signal cycle 1 times to 1/100 times.The output source of clock signal Q1_CK and clock signal Q2_CK both can be a control of braking microcomputer 20, also can be the clock circuit that is provided with in addition.
Under the situation of 2 side terminal outgoing currents of photoelectricity coupling part 20a, the input of the clock signal Q1_CK of decision circuit 31a is effective.Its result is from the lead-out terminal of the decision circuit 31a signal via filter 32a output H level.In addition, under the situation of 2 side terminal outgoing currents of photoelectricity coupling part 30b, the input of the clock signal Q2_CK of decision circuit 31b is effective.Its result is from the lead-out terminal of the decision circuit 32a signal via filter 32b output H level.
In addition, control of braking microcomputer 20 to the Reset terminal output reset signal of the Reset of decision circuit 31a terminal and decision circuit 31b, and resets each the signal output from decision circuit 31a, 31b by as required.The output time of reset signal is between from the inverse of PWM frequency of carrier signal 1/2 times to 1/100 times.
Figure 13 is the diagram of circuit of an example of the action of the braking force control system of elevator in expression the 6th embodiment of the present invention.
Control of braking microcomputer 20 makes applying voltage to on-off element 11a, 11b and begin (step S61) based on PWM control.
Here, to 2 side terminals of photoelectricity coupling part 30a and the Set terminal input clock signal Q1_CK of decision circuit 31a.In addition, to 2 side terminals of photoelectricity coupling part 30b and the Set terminal input clock signal Q2_CK (step S62) of decision circuit 31b.
Elevator control gear 33 is via the output voltage values of filter 32a input from decision circuit 31a.If the normal value H level of this output voltage values when to be the input of clock signal Q1_CK effective, then elevator control gear 33 is judged as the operation irregularity (step S63 → step S64) that does not have on-off element 11a.In addition, if the level L level of the normal value of this output voltage values when to be the input of non-clock signal Q2_CK effective, then elevator control gear 33 is judged as the operation irregularity (step S63 → step S65) that has on-off element 11a.
In addition, elevator control gear 33 is via the output voltage values of filter 32b input from decision circuit 31b.If the normal value H level of this output voltage values when to be the input of clock signal Q2_CK effective, then elevator control gear 33 is judged as the operation irregularity that does not have on-off element 11b.In addition, if the level L level of the normal value of this output voltage values when to be the input of non-clock signal Q2_CK effective, then elevator control gear 33 is judged as the operation irregularity that has on-off element 11b.
Here, the output wave shape relevant with the judgement of the operation irregularity of on-off element 11a described.Figure 14 and Figure 15 are the figure of an example of the output wave shape of the braking force control system of elevator in expression the 6th embodiment of the present invention.
In this example, as shown in figure 14, in the action command P+ of output on-off element 11a, disconnect synchronously, at the primary side of photoelectricity coupling part 30a, be that the two ends of diode 12a produce voltage V_IGBT1_CK with the connection of this action command P+.
In addition, in this example, each of clock signal Q1_CK and clock signal Q2_CK synchronously was output with this action command P+ with the cycle identical with the cycle of action command P+.In addition, as the IGBT1_CK of the ratio of clock signal Q1_CK and clock signal Q2_CK, become waveform with the synchronous pulse type of action command P+.
Waveform shown in Figure 15 is the waveform after near the waveform 0.30 second time shown in Figure 14 is amplified.At the waveform of action command P+, V_IGBT1_CK shown in Figure 14 and IGBT1_CK in the time shown in dotted line, promptly later to 0.50 second time from 0.20 second, the waveform of the output of action command P+, V_IGBT1_CK and IGBT1_CK continues as waveform shown in Figure 15.
Exporting normal electric current from photoelectricity coupling part 30a, when decision circuit 31a input clock signal Q1_CK is effective, becoming the H level from the signal that decision circuit 31a exports, up to till decision circuit 31a input reset signal via filter 32a.Therefore, when the signal IGBT1_CK from filter 32a output is the H level, mean the operation irregularity that does not have on-off element 11a.In addition, when this signal IGBT1_CK is not the H level, mean the operation irregularity that has on-off element 11a.
Similarly, exporting normal electric current, when decision circuit 31b input clock signal Q2_CK is effective, becoming the H level from the signal that decision circuit 31b exports, up to till decision circuit 31b input reset signal via filter 32b from photoelectricity coupling part 30b.Therefore, when the signal from filter 32b output is the H level, mean the operation irregularity that does not have on-off element 11b.In addition, when this signal is not the H level, mean the operation irregularity that has on-off element 11b.
As mentioned above, in the braking force control system of the elevator of the 6th embodiment of the present invention,, can judge the operation irregularity that has or not on-off element according to their output valve with the photoelectricity coupling part and the decision circuit combination at the two ends of diode.
In addition, the present invention is not limited to above-mentioned embodiment, the implementation phase can in the scope that does not break away from purport, make inscape distortion and specialize.In addition, by disclosed a plurality of inscape appropriate combination in the above-mentioned embodiment can be formed various inventions.For example, also can from disclosed all inscapes of embodiment, omit several inscapes.And then, also can spread all over several different embodiments inscape is suitably made up.
Claims (6)
1. the braking force control system of an elevator is characterized in that, possesses:
Rectifying circuit (2), it will be converted to direct current (DC) from the alternating current that exchanges power supply;
Smooth condenser (7), its will in described rectifying circuit, change and galvanic pulsation smoothing;
First circuit series, in parallel diode (12a) and semiconductor switch (11a) are connected in series with described smooth condenser, and, the anode of this diode is connected with the active potential point of described smooth condenser, and described semiconductor switch is connected between the negative electrode of the high potential point of described smooth condenser and described diode;
Second circuit series, in parallel diode (12b) and semiconductor switch (11b) are connected in series with described smooth condenser, and, the negative electrode of this diode is connected with the high potential point of described smooth condenser, and described semiconductor switch is connected between the anode of the active potential point of described smooth condenser and described diode;
First restraining coil (5a), it is connected between the anode of diode of the negative electrode of diode of described first circuit series and described second circuit series;
Second restraining coil (5b), itself and described first restraining coil are connected in parallel;
First brake plate (17a), it mechanically carries out control of braking to being braked body when the non-energising of described first restraining coil, when described first restraining coil is switched on, the described braking maneuver that is braked body is removed;
Second brake plate (17b), it mechanically carries out control of braking to being braked body when the non-energising of described second restraining coil, when described second restraining coil is switched on, the described braking maneuver that is braked body is removed;
Current probe (25), its current value to described first restraining coil and second restraining coil detects; With
Brake control section (20), it is to described first restraining coil and the energising of second restraining coil, semiconductor switch to described first circuit series and second circuit series is switched on, end control so that overlapping to the part during the energising that the semiconductor switch of described first circuit series is switched on and the part during the energising that the semiconductor switch of described second circuit series is switched on, this energising, after the control beginning, according to judging that by the detected testing result of described current probe the action of described first brake plate and second brake plate begins, be accompanied by this judgement, the semiconductor switch of described first circuit series and second circuit series is switched on, by control so that the current value ratio of described first restraining coil and second restraining coil reduces when judging.
2. the braking force control system of elevator according to claim 1 is characterized in that:
Also possess: piezoelectric detector (23a, 23b), its voltage to the diode of the diode of described first circuit series and described second circuit series detects,
The voltage-target of described brake control section by with the detected testing result of described piezoelectric detector and this detection the time compares and the operation irregularity of the semiconductor switch of described first circuit series and second circuit series detected, be accompanied by this detection, described source of AC is disconnected.
3. the braking force control system of elevator according to claim 1 is characterized in that:
Described brake control section to described semiconductor switch switch on, by control so that the deviation of the current target value when not occurring by the detected testing result of described current probe and this detection.
4. the braking force control system of elevator according to claim 1 is characterized in that,
Also possess:
First brake switch (26a), itself and described first restraining coil are connected in series; With
Second brake switch (26b), itself and described second restraining coil are connected in series,
Described brake control section also makes the side in described first brake switch and second brake switch disconnect and makes the opposing party's short circuit, according to the mode of operation of car judge be connected in described open circuited brake switch on the relevant brake plate of the restraining coil braking maneuver of carrying out have no abnormal.
5. the braking force control system of elevator according to claim 1 is characterized in that, also possesses:
First photoelectrical coupler (30a), the diode of itself and described first circuit series is connected in parallel;
Second photoelectrical coupler (30b), the diode of itself and described second circuit series is connected in parallel;
First decision circuit (31a), it is according to the signal of the mode of operation of the semiconductor switch of exporting described first circuit series of expression from the electric current output state of described first photoelectrical coupler; With
Second decision circuit (31a), it is according to the signal of the mode of operation of the semiconductor switch of exporting described second circuit series of expression from the electric current output state of described second photoelectrical coupler.
6. the braking force control system of elevator according to claim 1 is characterized in that:
The semiconductor switch of described first circuit series is that collecting electrode is connected with described high potential point, the negative electrode bonded assembly igbt of the diode of emitter and described first circuit series,
The semiconductor switch of described second circuit series is that collecting electrode is connected with the anode of the diode of described second circuit series, emitter and described active potential point bonded assembly igbt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP064360/2010 | 2010-03-19 | ||
| JP2010064360A JP5578901B2 (en) | 2010-03-19 | 2010-03-19 | Elevator brake control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102190222A true CN102190222A (en) | 2011-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100488420A Pending CN102190222A (en) | 2010-03-19 | 2011-03-01 | Brake control device for elevator |
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| CN (1) | CN102190222A (en) |
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| CN105517934A (en) * | 2013-09-27 | 2016-04-20 | 三菱电机株式会社 | Elevator control device |
| CN105555489A (en) * | 2013-09-24 | 2016-05-04 | 川崎重工业株式会社 | Multiaxial robot power shut-off device and multiaxial robot |
| CN107428498A (en) * | 2015-04-01 | 2017-12-01 | 通力股份公司 | The method of brake control apparatus and control elevator brake |
| CN109071147A (en) * | 2016-03-18 | 2018-12-21 | 奥的斯电梯公司 | The management of multi-coil brake for elevator device |
| CN110857210A (en) * | 2018-08-22 | 2020-03-03 | 通力股份公司 | Elevator safety brake, elevator and method for testing elevator safety brake |
| CN110950261A (en) * | 2019-11-19 | 2020-04-03 | 日立电梯（中国）有限公司 | Elevator brake control parameter generation method, device and system and computer equipment |
| CN112607645A (en) * | 2019-10-03 | 2021-04-06 | 奥的斯电梯公司 | Elevator brake control |
| CN113165828A (en) * | 2018-12-20 | 2021-07-23 | 因温特奥股份公司 | Method and brake control for controlling the brake of an elevator installation |
| CN113942906A (en) * | 2020-07-16 | 2022-01-18 | 奥的斯电梯公司 | Elevator safety circuit |
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| JP5875494B2 (en) * | 2012-09-20 | 2016-03-02 | 株式会社キトー | Electromagnetic brake control device |
| CN106132858B (en) * | 2014-04-03 | 2018-01-30 | 三菱电机株式会社 | Elevator control gear |
| JP6300412B2 (en) * | 2014-10-14 | 2018-03-28 | 東芝三菱電機産業システム株式会社 | Abnormality detection apparatus and abnormality detection method |
| JP6021980B1 (en) * | 2015-03-31 | 2016-11-09 | 東芝エレベータ株式会社 | Elevator control device |
| EP3305703A1 (en) * | 2016-10-04 | 2018-04-11 | KONE Corporation | Elevator brake controller |
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| JP7268777B1 (en) | 2022-04-27 | 2023-05-08 | フジテック株式会社 | Electromagnetic brake controller for elevator |
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| CN105555489A (en) * | 2013-09-24 | 2016-05-04 | 川崎重工业株式会社 | Multiaxial robot power shut-off device and multiaxial robot |
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| CN107428498A (en) * | 2015-04-01 | 2017-12-01 | 通力股份公司 | The method of brake control apparatus and control elevator brake |
| CN109071147A (en) * | 2016-03-18 | 2018-12-21 | 奥的斯电梯公司 | The management of multi-coil brake for elevator device |
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| CN110857210A (en) * | 2018-08-22 | 2020-03-03 | 通力股份公司 | Elevator safety brake, elevator and method for testing elevator safety brake |
| CN113165828A (en) * | 2018-12-20 | 2021-07-23 | 因温特奥股份公司 | Method and brake control for controlling the brake of an elevator installation |
| CN112607645A (en) * | 2019-10-03 | 2021-04-06 | 奥的斯电梯公司 | Elevator brake control |
| CN112607645B (en) * | 2019-10-03 | 2022-08-23 | 奥的斯电梯公司 | Elevator brake control device, elevator brake system and method for testing elevator brake system |
| CN110950261A (en) * | 2019-11-19 | 2020-04-03 | 日立电梯（中国）有限公司 | Elevator brake control parameter generation method, device and system and computer equipment |
| CN113942906A (en) * | 2020-07-16 | 2022-01-18 | 奥的斯电梯公司 | Elevator safety circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5578901B2 (en) | 2014-08-27 |
| JP2011195287A (en) | 2011-10-06 |
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Application publication date: 20110921 |