CN106672763A - Monitoring method of elevator car door closing state by elevator door light curtain - Google Patents
Monitoring method of elevator car door closing state by elevator door light curtain Download PDFInfo
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- CN106672763A CN106672763A CN201510765412.9A CN201510765412A CN106672763A CN 106672763 A CN106672763 A CN 106672763A CN 201510765412 A CN201510765412 A CN 201510765412A CN 106672763 A CN106672763 A CN 106672763A
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Abstract
The invention discloses a monitoring method of an elevator car door closing state by an elevator door light curtain. The distance between a launcher and a receiver of the door light curtain varies; light intensity collected by the receiver is converted to an electric signal; and the interval variation between the launcher and the receiver and the elevator car door closing state are judged according to a variation of the electric signal. The monitoring method expands the function of the elevator door light curtain, prevents the accident risk that a passenger is injured by collision of an elevator car door when going in and out of an elevator because a door fully closed switch is in short circuit, and improves the safety of an elevator door region.
Description
Technical field
The present invention relates to a kind of monitoring method of state of elevator, particularly belongs to a kind of method being monitored to the closed mode of elevator cage door using existing door light proscenia.
Background technology
In the concerned countries standard of elevator, clear stipulaties elevator device must install light proscenia, its single function, be only used for detecting whether that someone or object pass in and out gate to prevent the door during being closed from clashing into.At present, light proscenia mainly includes transmitter and receiver, when elevator cage door is center opening door (i.e. gate to the left and right both sides open), the transmitter and receiver of light proscenia is separately mounted on the gate of left and right, when elevator cage door is side opening door (opening in gate a to direction), one in transmitter and receiver is arranged on gate, and another is then arranged on corresponding gateway column.
Elevator cage door automatic opening and closing door under the control of electrically driven, when elevator cage door is closed, is monitored by door-closing in-place switch to the closed mode of elevator cage door.When gate is not completely closed, door-closing in-place switch are that safety return circuit is off, now lift car cannot run up and down, only door-closing in-place switch in an ON state when, lift car could run up and down, and this just prevents the elevator cage door situation that personnel's inlet/outlet area but accidental movement of elevator cage are damaged to human body when opening to occur.But sometimes, maintenance personnel in order to work convenience can violation short circuit elevator cage door temporarily door-closing in-place switch, again because door-closing in-place switch are not recovered normal condition by carelessness after the completion of work, elevator cage door can be so caused to move under the car effect of also calling together outside when opening, the passenger to passing in and out car damages.
The content of the invention
The technical problem to be solved is to provide a kind of monitoring method of utilization elevator door light curtain to elevator cage door closed mode, can accurately judge whether the closed mode and door-closing in-place switch of elevator cage door the situation for failing or thinking short circuit occur.
To solve above-mentioned technical problem, a kind of monitoring method of the elevator door light curtain that the present invention is provided to elevator cage door closed mode, the distance between the transmitter of the door light curtain and receiver change, the luminous intensity that receiver is collected is converted into electric signal, by the change of the electric signal judge between transmitter and receiver spacing change and elevator cage door closed mode.
In one of which method, the transmitter has some luminous tubes, the receiver has some light-receiving tubes, only corresponding with one light-receiving tube of each luminous tube coordinates, one of the top is the first luminous tube in wherein all luminous tubes, the first light-receiving tube coordinated with the first luminous tube is of the top in all light-receiving tubes, and first light-receiving tube only receives the light that the first luminous tube sends；The elevator device is provided with measurement processor, door-closing in-place switch, and wherein measurement processor is electrically connected with respectively with door-closing in-place switch, door light curtain；When door-closing in-place switch are connected, measurement processor to door light curtain sends instruction, the intensity of the light that the first light-receiving tube receives is converted to magnitude of voltage or current value by an optical-electrical converter, and the magnitude of voltage or current value diminish with the increase of spacing between the first luminous tube and the first light-receiving tube, the magnitude of voltage changed out to optical-electrical converter of signal transacting output unit or current value and default condition activation threshold value in door light curtain is compared, when the magnitude of voltage or current value that optical-electrical converter is changed out is equal to less than default condition activation threshold value, the signal transacting output unit exports cut-off signal to measurement processor, now measurement processor judges that the opening spacing of elevator cage door reaches dangerous spacing and door-closing in-place switch fail or are shorted, the measurement processor sends the instruction of No starting to elevator.Comprise the following steps that：Step one, the initial value and condition activation threshold value of optical-electrical converter transformation result are set in door light curtain, magnitude of voltage or current value that the light intensity that the first light-receiving tube is received when wherein initial value is completely closed for gate is changed out, condition activation threshold value is magnitude of voltage or the current value that gate opens that the light intensity that the first light-receiving tube is received when spacing reaches dangerous spacing is changed out；Step 2, measurement processor monitor door-closing in-place switch state, as door-closing in-place switch are off, go to step 3, as door-closing in-place switch in an ON state if go to step 4；Step 3, the first luminous tube, the first light-receiving tube, optical-electrical converter and signal transacting output unit do not work；Step 4, first luminous tube, first light-receiving tube, optical-electrical converter and signal transacting output unit work, the intensity-conversion of the light that optical-electrical converter receives the first light-receiving tube is magnitude of voltage or current value, signal transacting output unit is compared the magnitude of voltage or current value and default condition activation threshold value, when the magnitude of voltage or current value that optical-electrical converter is changed out is equal to less than the condition activation threshold value, signal transacting output unit exports cut-off signal, when measurement processor receives the cut-off signal of signal transacting output unit output, the opening spacing of judgement elevator cage door reaches dangerous spacing and door-closing in-place switch fail or are shorted；The measurement processor to elevator sends the instruction of No starting, and sends early warning signal.
In wherein another kind of method, the transmitter has some luminous tubes, the receiver has some light-receiving tubes, one of the top is the first light-receiving tube in wherein all light-receiving tubes, the light that luminous tube sends has an angle, when the opening spacing of elevator cage door reaches dangerous spacing, the first light-receiving tube receives the light that at least two luminous tubes send；The elevator device is provided with measurement processor, door-closing in-place switch, and wherein measurement processor is electrically connected with respectively with door-closing in-place switch, door light curtain；When door-closing in-place switch are connected, measurement processor to door light curtain sends instruction, the intensity of the light that the first light-receiving tube receives is converted to magnitude of voltage or current value by an optical-electrical converter, and the magnitude of voltage or current value diminish with the increase of spacing between transmitter and receiver, the magnitude of voltage changed out to optical-electrical converter of signal transacting output unit or current value and default condition activation threshold value in door light curtain is compared, when the first light-receiving tube is changed into the light that at least two luminous tubes of acceptance send from the light that one luminous tube of acceptance sends, the magnitude of voltage or current value that optical-electrical converter is changed out is undergone mutation when reaching default condition activation threshold value, the signal transacting output unit exports cut-off signal to measurement processor, now measurement processor judges that the opening spacing of elevator cage door reaches dangerous spacing and door-closing in-place switch fail or are shorted, the measurement processor sends the instruction of No starting to elevator.Comprise the following steps that：Step one, the initial value and condition activation threshold value of optical-electrical converter transformation result are set in door light curtain, magnitude of voltage or current value that the light intensity that the first light-receiving tube is received when wherein initial value is completely closed for gate is changed out, condition activation threshold value is that the first light-receiving tube receives the magnitude of voltage or current value changed out during the light that at least two luminous tubes send, and now gate opens spacing and reaches dangerous spacing；Step 2, measurement processor monitor door-closing in-place switch state, as door-closing in-place switch are off, go to step 3, as door-closing in-place switch in an ON state if go to step 4；Step 3, the first light-receiving tube, optical-electrical converter and signal transacting output unit do not work；Step 4, first light-receiving tube, optical-electrical converter and signal transacting output unit work, the intensity-conversion of the light that optical-electrical converter receives the first light-receiving tube is magnitude of voltage or current value, signal transacting output unit is compared the magnitude of voltage or current value and default condition activation threshold value, when the magnitude of voltage or current value that optical-electrical converter is changed out is equal to more than the condition activation threshold value, signal transacting output unit exports cut-off signal, when measurement processor receives the cut-off signal of signal transacting output unit output, the opening spacing of judgement elevator cage door reaches dangerous spacing and door-closing in-place switch fail or are shorted；The measurement processor to elevator sends the instruction of No starting, and sends early warning signal.
Further, the door light curtain is additionally provided with a memory, and the memory is electrically connected with optical-electrical converter, signal transacting output unit, and self study is carried out when elevator door light curtain is used first, and initial value and condition activation threshold value are recorded in memory；When door-closing in-place switch are connected, measurement processor to door light curtain sends instruction, the intensity of the light that the first light-receiving tube receives is converted to magnitude of voltage or current value by an optical-electrical converter, the condition activation threshold value preserved in the magnitude of voltage changed out to optical-electrical converter of signal transacting output unit or current value and memory in door light curtain is compared, when the first light-receiving tube is changed into the light that at least two luminous tubes of acceptance send from the light that one luminous tube of acceptance sends, when the magnitude of voltage or current value that optical-electrical converter is changed out reaches default condition activation threshold value, the signal transacting output unit exports cut-off signal to measurement processor, now measurement processor judges that the opening spacing of elevator cage door reaches dangerous spacing and door-closing in-place switch fail or are shorted, the measurement processor sends the instruction of No starting to elevator.
Wherein in yet another method, the transmitter has some luminous tubes, the receiver has some light-receiving tubes, one of the top is the first light-receiving tube in wherein all light-receiving tubes, one of the top is the first luminous tube in all luminous tubes, there is a difference in height between first light-receiving tube and the first luminous tube；When the opening of elevator cage door is smaller than dangerous spacing, all light-receiving tubes can only receive the light that the luminous tube of isometry position sends, when the opening spacing of elevator cage door reaches dangerous spacing, the first light-receiving tube receives the light that the first luminous tube of non-isometry position sends；The elevator device is provided with measurement processor, door-closing in-place switch, and wherein measurement processor is electrically connected with respectively with door-closing in-place switch, door light curtain；When door-closing in-place switch are connected, measurement processor to door light curtain sends instruction, the intensity of the light that the first light-receiving tube receives is converted to magnitude of voltage or current value by an optical-electrical converter, when magnitude of voltage or current value that optical-electrical converter is changed out are zero, signal is connected in the output of signal transacting output unit, when magnitude of voltage or current value that optical-electrical converter is changed out are not zero, signal transacting output unit exports cut-off signal, when measurement processor receives the cut-off signal of signal transacting output unit output, measurement processor judges that the opening spacing of elevator cage door reaches dangerous spacing and door-closing in-place switch fail or are shorted, the measurement processor sends the instruction of No starting to elevator.Further, when the light intensity that the first light-receiving tube receives is photoelectrically converted magnitude of voltage that device changes out or current value is zero and the light intensity that receives of remaining light-receiving tube is photoelectrically converted magnitude of voltage that device changes out or when current value is also zero, signal transacting output unit output cut-off signal.
Whether the present invention is closed using door light curtain assembly monitor elevator cage door, and judges whether the door-closing in-place switch of elevator fail or by people's short circuit, and passenger when preventing lift car to be in open mode to passing in and out car damages.
Description of the drawings
Fig. 1 is the index path of first embodiment of the invention；
Fig. 2 is that gate opens the index path for reaching dangerous spacing in second embodiment of the invention；
Fig. 3 is that gate opens the index path for reaching dangerous spacing in third embodiment of the invention；
Fig. 4 is the index path that door light curtain of the present invention is obscured by an object；
Fig. 5 is the block diagram of first embodiment of the invention；
Fig. 6 is the flow chart of first embodiment of the invention；
Fig. 7 is the block diagram of second embodiment of the invention；
Fig. 8 is the flow chart of second embodiment of the invention；
Fig. 9 is the block diagram of third embodiment of the invention；
Figure 10 is the flow chart of third embodiment of the invention.
Wherein description of reference numerals is as follows：
1 is the first luminous tube；2 is the first light-receiving tube；3 are transmitting bar；4 is to receive bar；5 is collimated light beam；6 is the second luminous tube；7 is oblique light beam.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is further detailed explanation with specific embodiment.
The present invention is monitored using elevator door light curtain to elevator cage door closed mode, wherein the distance between the transmitter of door light curtain and receiver change, the luminous intensity that receiver is collected is converted into electric signal, by the change of the electric signal judge between transmitter and receiver spacing change and elevator cage door closed mode.
Embodiment one
Door light curtain includes transmitter and receiver, and transmitter includes transmitting bar 3 and some luminous tubes on transmitting bar 3, and receiver includes receiving bar 4 and installed in some light-receiving tubes received on bar 4.Only corresponding with one light-receiving tube of each luminous tube coordinates, one of the top is the first luminous tube 1 in wherein all luminous tubes, the first light-receiving tube 2 coordinated with the first luminous tube 1 is of the top in all light-receiving tubes, and first light-receiving tube 2 only receives the light that the first luminous tube 1 sends.In the present embodiment, first luminous tube 1 is spaced in vertical direction 100mm with the second luminous tube below, so gate is in whole switching process, first light-receiving tube 2 is contour with the first luminous tube 1, it can only receive the collimated light beam 5 that the first luminous tube 1 sends, the interference of the light of other luminous tubes will not be received, as shown in Figure 1.It is of course also possible to make the wavelength of the light that the first luminous tube sends different from the wavelength of the light that remaining luminous tube sends, to ensure that the first light-receiving tube can only receive the light that the first luminous tube sends.
The elevator device is provided with measurement processor, door-closing in-place switch, and wherein measurement processor is electrically connected with respectively with door-closing in-place switch, door light curtain.In the present embodiment, the just infrared light that light curtain is sent out.
The intensity of the light that light-receiving tube is received is converted into magnitude of voltage (it is of course also possible to being converted into current value) by an optical-electrical converter, and the luminous intensity that light-receiving tube receives is higher, and the magnitude of voltage that optical-electrical converter is converted to is also bigger.When gate is completely closed, the light intensity that first light-receiving tube receives is initial value and maximum, the magnitude of voltage highest that now optical-electrical converter is converted to, when gate is gradually opened, spacing increase between first luminous tube 1 and the first light-receiving tube 2, the light intensity that the first light-receiving tube 2 receives gradually decays, and the magnitude of voltage that optical-electrical converter is converted to diminishes, when gate opens spacing reaches risk distance, the magnitude of voltage that now optical-electrical converter is converted to is condition activation threshold value.The condition activation threshold value can be obtained by laboratory experience data, it is also possible to be obtained by self study when elevator is used first.In actual fabrication, optical-electrical converter can be made up of photosensitive triode, Current Voltage conversion integration block, and the power of infrared light can be changed out different size of magnitude of voltage by optical-electrical converter.
When door-closing in-place switch are connected, measurement processor to door light curtain sends instruction, the magnitude of voltage and condition activation threshold value that signal transacting output unit in door light curtain is changed out to optical-electrical converter is compared, when the magnitude of voltage that optical-electrical converter is changed out is reduced to condition activation threshold value, signal transacting output unit output cut-off signal.When measurement processor collects signal transacting mould output unit output cut-off signal, it can be determined that gate is opened to risk distance, and door-closing in-place switch fail or by artificial short circuit.Measurement processor sends the instruction of No starting in rear extended meeting to apparatus for controlling elevator, and provides the alarm signal that prompt door opens danger, as shown in Figure 5.
As shown in fig. 6, the embodiment is as follows the step of being monitored：
Step one, initial value and condition activation threshold value that optical-electrical converter is converted into magnitude of voltage to the light intensity that the first light-receiving tube receives are set in light curtain, initial value is that the first light-receiving tube receives the magnitude of voltage that light intensity is converted to when gate is completely closed, when condition activation threshold value is that gate opens a segment distance, the voltage signal that the light intensity of the first luminous tube that optical-electrical converter receives the first light-receiving tube is converted to, beam intensity ratio when light intensity and gate now is completely closed has decayed, the magnitude of voltage changed out also reduce (segment distance be in safety allow ultimate range, may be set to 50mm, door-closing in-place switch should send cut-off signal before this segment distance is opened), condition activation threshold value could be arranged to below 0.5V；
Step 2, after initial value and the setting of condition activation threshold value, door light curtain is monitored, if door-closing in-place switch are to disconnect, the monitoring system that first luminous tube, the first light-receiving tube, optical-electrical converter, signal transacting output unit are constituted now does not work, what if door-closing in-place switch were to turn on, then go to step 3；
Step 3, measurement processor sends instruction, the monitoring system that first luminous tube, the first light-receiving tube, optical-electrical converter, signal transacting output unit are constituted now works, the magnitude of voltage that optical-electrical converter changes out the light intensity that the first light-receiving tube receives, signal transacting output unit is compared the magnitude of voltage changed out with condition activation threshold value, when equal to less than condition activation threshold value, signal transacting output unit externally provides cut-off signal；
Measurement processor constantly monitors whether the signal transacting output unit of light curtain exports cut-off signal, and when signal transacting output unit exports cut-off signal, measurement processor judges that gate is opened to risk distance；Measurement processor is subsequently sending early warning signal to apparatus for controlling elevator, and apparatus for controlling elevator obtains performing safety measure after early warning signal.
Embodiment two
Door light curtain includes transmitter and receiver, and transmitter includes transmitting bar 3 and some luminous tubes on transmitting bar 3, and receiver includes receiving bar 4 and installed in some light-receiving tubes received on bar 4.The elevator device is provided with measurement processor, door-closing in-place switch, and wherein measurement processor is electrically connected with respectively with door-closing in-place switch, door light curtain.In the present embodiment, the just infrared light that light curtain is sent out.
From unlike first embodiment, the light that luminous tube sends has certain angle, and the light that same luminous tube sends is by transmitting bar and receives bar level interval and is affected, and the amplitude for being incident upon the above-below direction received on bar is different.For luminous tube, when launch bar and receive bar spacing it is big when, the light that luminous tube sends can be irradiated at least two light-receiving tube, and when spacing hour, the light that luminous tube sends can only be irradiated to contour light-receiving tube；For light-receiving tube, when spacing is big, light-receiving tube can receive the superposition of the light intensity of at least two luminous tube, and when spacing hour, a light-receiving tube can only receive the light of contour luminous tube, as shown in Figure 2.When the first light-receiving tube 2 from receive the collimated light beam 5 that sends of the first luminous tube 1 and be changed into receiving the oblique light beam 7 that the luminous tube 6 of collimated light beam 5 and second that the first luminous tube 1 sends sends when, the light for receiving becomes strong, and the magnitude of voltage of output also can become (Initial Voltage Value that the light that the first light-receiving tube 1 of acceptance of the first light-receiving tube 2 sends when the magnitude of voltage being converted to during the oblique light beam 7 that the luminous tube 6 of collimated light beam 5 and second that the first luminous tube 1 of acceptance of the first light-receiving tube 2 sends sends is completely closed more than gate is converted to) greatly.
Door light curtain can be provided independently from a memory, when elevator cage door is initially opened, door light curtain carries out self study, when record gate is opened, the increase value of the numerical value after the change of optical-electrical converter output voltage when the first light-receiving tube is from the light of the first luminous tube of acceptance to the light for receiving the first luminous tube and the second luminous tube, the initial value that optical-electrical converter is exported when gate is completely closed and increase or both is stored into memory.Arranging the lighting angle of luminous tube makes above-mentioned voltage change to produce when gate is opened to risk distance, and now door-closing in-place switch should be already off.
Measurement processor gathers the status signal of door-closing in-place switch, when door-closing in-place switch are connected, measurement processor to door light curtain sends instruction, the magnitude of voltage that the signal transacting output unit of door light curtain is converted into the light intensity that the first light-receiving tube receives is compared with the data of record in memory, voltage value when gate is opened to dangerous spacing when the self study that magnitude of voltage is recorded close in memory, can be determined that gate is accidentally opened and door-closing in-place switch failure or has the behavior of artificial short circuit door-closing in-place switch, measurement processor sends early warning signal to apparatus for controlling elevator.Apparatus for controlling elevator obtains performing safety measure after early warning signal.
Certainly memory can also be omitted, can pass through test method first obtain gate it is fully closed when light curtain output voltage magnitude of voltage when being opened to risk distance of initial value and gate, Initial Voltage Value and condition activation threshold value are set in light curtain (when i.e. gate is opened to risk distance, the first light-receiving tube receives the magnitude of voltage that the light that two luminous tubes send is converted out).When door-closing in-place switch are connected, measurement processor sends instruction to light curtain, the intensity of the light that the first light-receiving tube receives is converted to magnitude of voltage by optical-electrical converter, the magnitude of voltage and condition activation threshold value that signal transacting output unit in door light curtain is changed out to optical-electrical converter is compared, when the first light-receiving tube is changed into the light that two luminous tubes of acceptance send from the light that one luminous tube of acceptance sends, the magnitude of voltage that optical-electrical converter is changed out is undergone mutation when reaching default condition activation threshold value, it is considered as gate to be accidentally opened, and door-closing in-place switch fail or by artificial short circuit.Measurement processor sends the instruction of No starting in rear extended meeting to elevator, and provides the alarm signal that prompt door opens danger, as shown in Figure 7.
As shown in figure 8, the embodiment is as follows the step of being monitored：
Step one, self study is carried out to record data in memory, the first light-receiving tube of door light curtain is only capable of the projection light of the first luminous tube for receiving contour when gate is completely closed, now memory records initial voltage value, gate is opened after certain distance, now door-closing in-place switch are already off sends cut-off signal, significantly increase when gate opens spacing and continues to increase to output voltage values when single light-receiving tube can receive the projection light of 2 or more than 2 to have, the distance is the distance will produce danger that gate is opened to, may be set to 50mm, but as the continuation of distance increases, the light intensity that light-receiving tube receives no longer is changed significantly, magnitude of voltage when being increased dramatically is stored into memory；
Or, initial value and condition activation threshold value that optical-electrical converter is converted into magnitude of voltage to the light intensity that the first light-receiving tube receives directly are set in light curtain, initial value is that the first light-receiving tube receives the magnitude of voltage that light intensity is converted to when gate is completely closed, condition activation threshold value be gate be opened to dangerous spacing (segment distance be in safety allow ultimate range, 50mm being may be set to, door-closing in-place switch should send cut-off signal before this segment distance is opened) the first light-receiving tube receives the magnitude of voltage being converted to during the light intensity of the first luminous tube and the second luminous tube；
Step 2, door light curtain is monitored, if door-closing in-place switch are to disconnect, the monitoring system that optical-electrical converter, signal transacting output unit, measurement processor are constituted now does not work, if what door-closing in-place switch were to turn on, then go to step 3；
Step 3, measurement processor sends instruction, the light intensity that light-receiving tube is received is converted into magnitude of voltage by optical-electrical converter, the signal transacting output unit of door light curtain is compared the magnitude of voltage with the data or condition activation threshold value of record in memory, when the magnitude of voltage of output fly up and voltage increment value or increase value close to memory in self study when the gate that records open to dangerous spacing when voltage value or increase value, or output end voltage value be more than or equal to condition activation threshold value when, signal transacting output unit externally provides cut-off signal, measurement processor judges that gate is opened to risk distance and door-closing in-place switch fail or by artificial short circuit；Measurement processor is subsequently sending early warning signal to apparatus for controlling elevator, and apparatus for controlling elevator obtains performing safety measure after early warning signal.
Embodiment three
Door light curtain includes transmitter and receiver, and transmitter includes transmitting bar 3 and some luminous tubes on transmitting bar 3, and receiver includes receiving bar 4 and installed in some light-receiving tubes received on bar 4.The elevator device is provided with measurement processor, door-closing in-place switch, and wherein measurement processor is electrically connected with respectively with door-closing in-place switch, door light curtain.In the present embodiment, the just infrared light that light curtain is sent out.
From unlike first embodiment, there is a difference in height between the first luminous tube 1 of the top in first light-receiving tube 2 and all luminous tubes of the top in all light-receiving tubes.As shown in figure 3, the first light-receiving tube 2 is independently positioned at the highest point for receiving bar 4, and without luminous tube on the transmitting bar contour with the first light-receiving tube 2, but with the contour nearer position on the lower side of the first light-receiving tube 2, be set as there is the first luminous tube 1 at 30mm.The position ensures transmitting bar and receives distance between tie rods hour, and the first light-receiving tube 2 cannot receive the light of any luminous tube.
The light that first luminous tube 1 sends has certain angle, is affected by launching bar and receiving bar level interval, and it is different to be incident upon the amplitude received on bar.When the opening of elevator cage door is smaller than dangerous spacing, all light-receiving tubes can only receive the light that the luminous tube of isometry position sends, and now the first light-receiving tube 2 can't accept light, and it is 0 that optical-electrical converter produces voltage, and signal is connected in the output of signal transacting output unit.When the opening spacing of elevator cage door reaches dangerous spacing, (spacing is position when door is opened to risk distance, it is set as an opening 50mm, and now door-closing in-place switch action) when, first light-receiving tube 2 can receive the light of the first luminous tube 1 below opposite, optical-electrical converter produces magnitude of voltage, signal transacting output unit exports cut-off signal, as shown in Figure 9.
Only when door-closing in-place switch are connected, detection signal processes the signal of output unit to measurement processor, when the signal for detecting signal transacting output unit is cut-off signal, may determine that gate has opened to dangerous spacing, door-closing in-place switch failure can also be judged or the situation of artificial short circuit occur, so as to prevent elevator from running up and down when door is opened.Measurement processor is subsequently sending early warning signal to apparatus for controlling elevator.Apparatus for controlling elevator obtains performing safety measure after early warning signal.
As shown in Figure 10, the step of embodiment is monitored is as follows：
Step one, if door-closing in-place switch are to disconnect, measurement processor does not just work, if what door-closing in-place switch were to turn on, into step 2；
Step 2, the light intensity that first light-receiving tube 2 receives is converted into magnitude of voltage by photoelectric sensor, and when the opening of elevator cage door is smaller than dangerous spacing, the first light-receiving tube 2 can't accept light, it is 0 that optical-electrical converter produces voltage, and signal is connected in the output of signal transacting output unit；When the opening spacing of elevator cage door reaches dangerous spacing, the first light-receiving tube 2 can receive the light of the first luminous tube 1 below opposite, and optical-electrical converter produces magnitude of voltage, signal transacting output unit output cut-off signal；When measurement processor detects signal transacting output unit output cut-off signal, judge that gate is opened and door-closing in-place switch fail or are considered as connecting, measurement processor is subsequently sending early warning signal to apparatus for controlling elevator, and apparatus for controlling elevator obtains performing safety measure after early warning signal.
In above three embodiment, a monitoring condition can also be increased, i.e., signal transacting output unit exports the condition of cut-off signal when gate opening, door light curtain are blocked.When door-closing in-place switch are to turn on signal, as shown in Figure 4, if the magnitude of voltage that remaining light-receiving tube (non-first light-receiving tube) Jing optical-electrical converter of door light curtain is converted to is 0, so may determine that gate is opened, door light curtain is blocked, now illustrate that gate is accidentally opened and door-closing in-place switch failure or is considered as short circuit.Measurement processor sends the instruction of No starting in rear extended meeting to elevator, and provides the alarm signal that prompt door opens danger.
The present invention is described in detail above by specific embodiment, the embodiment is only presently preferred embodiments of the present invention, it not limits the invention.Without departing from the principles of the present invention, those skilled in the art makes equivalent replacement and improvement, are regarded as in the technology category protected of the invention.
Claims (9)
1. monitoring method of a kind of elevator door light curtain to elevator cage door closed mode, it is characterised in that the door light curtain
The distance between transmitter and receiver change, and the luminous intensity that receiver is collected is converted into electric signal, by this
The change of electric signal judges the closed mode of the spacing change between transmitter and receiver and elevator cage door.
2. monitoring method of the elevator door light curtain according to claim 1 to elevator cage door closed mode, its feature exists
In, the transmitter has some luminous tubes, and the receiver has some light-receiving tubes, each luminous tube only with a phase
Corresponding light-receiving tube coordinates, wherein in all luminous tubes one of the top be the first luminous tube, coordinate with the first luminous tube
The first light-receiving tube be one of the top in all light-receiving tubes, first light-receiving tube only receives what the first luminous tube sent
Light；The elevator device is provided with measurement processor, door-closing in-place switch, and wherein measurement processor is opened respectively with door-closing in-place
Close, door light curtain is electrically connected with；
When door-closing in-place switch are connected, measurement processor to door light curtain sends instruction, the light that the first light-receiving tube receives it is strong
Degree is converted to magnitude of voltage or current value by an optical-electrical converter, and the magnitude of voltage or current value are with the first luminous tube and the
The increase of spacing between one light-receiving tube and diminish, what the signal transacting output unit in door light curtain was changed out to optical-electrical converter
Magnitude of voltage or current value and default condition activation threshold value are compared, the magnitude of voltage changed out when optical-electrical converter or electric current
When value is equal to less than default condition activation threshold value, the signal transacting output unit exports cut-off signal to measurement processor,
Now measurement processor judges that the opening spacing of elevator cage door reaches dangerous spacing and door-closing in-place switch fail or are shorted,
The measurement processor sends the instruction of No starting to apparatus for controlling elevator.
3. monitoring method of the elevator door light curtain according to claim 2 to elevator cage door closed mode, its feature exists
In,
Step one, arranges the initial value and condition activation threshold value of optical-electrical converter transformation result, wherein initially in door light curtain
It is worth magnitude of voltage or current value that the light intensity that the first light-receiving tube is received when completely closing for gate is changed out, condition activation threshold value
Magnitude of voltage or the current value that the light intensity that the first light-receiving tube is received when spacing reaches dangerous spacing is changed out is opened for gate；
Step 2, measurement processor monitors the state of door-closing in-place switch, as door-closing in-place switch are off, turns
To step 3, as door-closing in-place switch in an ON state if go to step 4；
Step 3, the first luminous tube, the first light-receiving tube, optical-electrical converter and signal transacting output unit do not work；
Step 4, the first luminous tube, the first light-receiving tube, optical-electrical converter and signal transacting output unit work, photoelectricity turns
The intensity-conversion of the light that parallel operation receives the first light-receiving tube is magnitude of voltage or current value, and signal transacting output unit is by the electricity
Pressure value or current value and default condition activation threshold value are compared, the magnitude of voltage changed out when optical-electrical converter or current value
During equal to less than the condition activation threshold value, signal transacting output unit output cut-off signal, when measurement processor is received
Signal transacting output unit output cut-off signal when, judge elevator cage door opening spacing reach dangerous spacing and close the door to
Bit switch fails or is shorted；The measurement processor to apparatus for controlling elevator sends the instruction of No starting, and sends pre-
Alert signal.
4. monitoring method of the elevator door light curtain according to claim 1 to elevator cage door closed mode, its feature exists
In the transmitter has some luminous tubes, and the receiver has some light-receiving tubes, wherein most going up in all light-receiving tubes
One of side is the first light-receiving tube, and the light that luminous tube sends has an angle, when the opening spacing of elevator cage door reaches danger
During spacing, the first light-receiving tube receives the light that at least two luminous tubes send；The elevator device be provided with measurement processor,
Door-closing in-place switch, wherein measurement processor are electrically connected with respectively with door-closing in-place switch, door light curtain；
When door-closing in-place switch are connected, measurement processor to door light curtain sends instruction, the light that the first light-receiving tube receives it is strong
Degree is converted to magnitude of voltage or current value, and the magnitude of voltage or current value with transmitter and receiver by an optical-electrical converter
Between spacing increase and diminish, magnitude of voltage that the signal transacting output unit in door light curtain is changed out to optical-electrical converter or
Current value and default condition activation threshold value are compared, when the first light-receiving tube is changed into from the light that one luminous tube of acceptance sends
When receiving the light that at least two luminous tubes send, the magnitude of voltage or current value that optical-electrical converter is changed out undergo mutation reach it is pre-
If condition activation threshold value when, the signal transacting output unit exports cut-off signal to measurement processor, now at detection
Reason device judges that the opening spacing of elevator cage door reaches dangerous spacing and door-closing in-place switch fail or are shorted, at the detection
Reason device sends the instruction of No starting to apparatus for controlling elevator.
5. monitoring method of the elevator door light curtain according to claim 4 to elevator cage door closed mode, its feature exists
In,
Step one, arranges the initial value and condition activation threshold value of optical-electrical converter transformation result, wherein initially in door light curtain
It is worth magnitude of voltage or current value that the light intensity that the first light-receiving tube is received when completely closing for gate is changed out, condition activation threshold value
The magnitude of voltage changed out when receiving the light that at least two luminous tubes send for the first light-receiving tube or current value, now gate beat
The standard width of a room in an old-style house is away from reaching dangerous spacing；
Step 2, measurement processor monitors the state of door-closing in-place switch, as door-closing in-place switch are off, turns
To step 3, as door-closing in-place switch in an ON state if go to step 4；
Step 3, the first light-receiving tube, optical-electrical converter and signal transacting output unit do not work；
Step 4, the first light-receiving tube, optical-electrical converter and signal transacting output unit work, optical-electrical converter is received first
The intensity-conversion of the light that light pipe is received is magnitude of voltage or current value, and signal transacting output unit is by the magnitude of voltage or current value
It is compared with default condition activation threshold value, the magnitude of voltage changed out when optical-electrical converter or current value are equal to more than described
During condition activation threshold value, signal transacting output unit output cut-off signal, when measurement processor receives signal transacting output
Unit output cut-off signal when, judge elevator cage door opening spacing reach dangerous spacing and door-closing in-place switch failure or
It is shorted；The measurement processor to apparatus for controlling elevator sends the instruction of No starting, and sends early warning signal.
6. monitoring method of the elevator door light curtain according to claim 5 to elevator cage door closed mode, its feature exists
In, the door light curtain is additionally provided with a memory, and the memory is electrically connected with optical-electrical converter, signal transacting output unit,
Self study is carried out when elevator door light curtain is used first, initial value and condition activation threshold value are recorded in memory；
When door-closing in-place switch are connected, measurement processor to door light curtain sends instruction, the light that the first light-receiving tube receives it is strong
Degree is converted to magnitude of voltage or current value by an optical-electrical converter, and the signal transacting output unit in door light curtain is to opto-electronic conversion
The condition activation threshold value preserved in magnitude of voltage that device is changed out or current value and memory is compared, when the first light-receiving tube from
When the light that one luminous tube of acceptance sends is changed into the light that at least two luminous tubes of acceptance send, the electricity that optical-electrical converter is changed out
When pressure value or current value reach default condition activation threshold value, the signal transacting output unit output cut-off signal is to detection
Processor, now measurement processor judge elevator cage door opening spacing reach dangerous spacing and door-closing in-place switch failure or
It is shorted, the measurement processor sends the instruction of No starting to apparatus for controlling elevator.
7. monitoring method of the elevator door light curtain according to claim 2 or 4 to elevator cage door closed mode, it is special
Levy and be, when door-closing in-place switch are connected, measurement processor to door light curtain sends instruction, the light that all light-receiving tubes receive
Intensity all respectively magnitude of voltage or current value be converted to by optical-electrical converter, when the light intensity that the first light-receiving tube receives is converted into
Magnitude of voltage or current value be not up to default condition activation threshold value and at least one light intensity for receiving turns in remaining light-receiving tube
When the magnitude of voltage or current value for changing into is zero, signal transacting output unit exports cut-off signal to measurement processor, now examines
Survey processor and judge that elevator cage door is accidentally opened and door-closing in-place switch fail or are shorted, while measurement processor is to electricity
Terraced control system sends the instruction of No starting.
8. monitoring method of the elevator door light curtain according to claim 1 to elevator cage door closed mode, its feature exists
In the transmitter has some luminous tubes, and the receiver has some light-receiving tubes, wherein most going up in all light-receiving tubes
Side one be the first light-receiving tube, in all luminous tubes one of the top be the first luminous tube, first light-receiving tube with
There is a difference in height between first luminous tube；When the opening of elevator cage door is smaller than dangerous spacing, all light-receiving tubes are only
The light that the luminous tube of isometry position sends can be received, when the opening spacing of elevator cage door reaches dangerous spacing, first receives
Light pipe receives the light that the first luminous tube of non-isometry position sends；The elevator device be provided with measurement processor, close the door to
Bit switch, wherein measurement processor are electrically connected with respectively with door-closing in-place switch, door light curtain；
When door-closing in-place switch are connected, measurement processor to door light curtain sends instruction, the light that the first light-receiving tube receives it is strong
Degree is converted to magnitude of voltage or current value by an optical-electrical converter, and the magnitude of voltage or current value changed out when optical-electrical converter is
When zero, signal is connected in the output of signal transacting output unit, and the magnitude of voltage or current value changed out when optical-electrical converter is not zero
When, signal transacting output unit output cut-off signal, when measurement processor receives the disconnected of signal transacting output unit output
During ON signal, measurement processor judges that the opening spacing of elevator cage door reaches dangerous spacing and door-closing in-place switch failure or quilt
Short circuit, the measurement processor sends the instruction of No starting to apparatus for controlling elevator.
9. monitoring method of the elevator door light curtain according to claim 8 to elevator cage door closed mode, its feature exists
In when the light intensity that the first light-receiving tube receives is photoelectrically converted magnitude of voltage that device changes out or current value is zero and remaining light-receiving tube
The light intensity of acceptance is photoelectrically converted magnitude of voltage that device changes out or when current value is also zero, and the output of signal transacting output unit is disconnected
ON signal.
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| CN107500099A (en) * | 2017-09-07 | 2017-12-22 | 宁波赛福特电子有限公司 | A kind of multifunctional lift light curtain |
| CN108059068A (en) * | 2017-12-12 | 2018-05-22 | 日立楼宇技术（广州）有限公司 | Light curtain detection threshold value generation method, device and system |
| CN110371809A (en) * | 2019-07-25 | 2019-10-25 | 上海三菱电梯有限公司 | Elevator floor position learning system |
| CN110482386A (en) * | 2018-05-14 | 2019-11-22 | 奥的斯电梯公司 | Elevator door safety control |
| CN110861984A (en) * | 2018-08-27 | 2020-03-06 | 广州广日电梯工业有限公司 | Monitoring method of elevator centering device and monitoring device of elevator centering device |
| CN112180790A (en) * | 2020-09-29 | 2021-01-05 | 成都新潮传媒集团有限公司 | Energy-saving control method and device for multimedia equipment and computer equipment |
| CN112320543A (en) * | 2020-09-15 | 2021-02-05 | 上海青浦电梯配件有限公司 | Elevator light curtain detection, synchronization and distance sensing integrated equipment and method |
| CN112960524A (en) * | 2021-02-04 | 2021-06-15 | 日立楼宇技术（广州）有限公司 | Detection method, device, equipment and medium for elevator door |
| CN113401773A (en) * | 2021-05-21 | 2021-09-17 | 杭州优迈科技有限公司 | Elevator light curtain control method and device and electronic equipment |
| CN114212650A (en) * | 2021-12-16 | 2022-03-22 | 日立楼宇技术（广州）有限公司 | Elevator detection updating method, computer equipment and storage medium |
| CN116142935A (en) * | 2022-12-30 | 2023-05-23 | 杭州优迈科技有限公司 | Elevator light curtain scanning method and device and elevator light curtain system |
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| CN107500099A (en) * | 2017-09-07 | 2017-12-22 | 宁波赛福特电子有限公司 | A kind of multifunctional lift light curtain |
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| CN112320543A (en) * | 2020-09-15 | 2021-02-05 | 上海青浦电梯配件有限公司 | Elevator light curtain detection, synchronization and distance sensing integrated equipment and method |
| CN112180790A (en) * | 2020-09-29 | 2021-01-05 | 成都新潮传媒集团有限公司 | Energy-saving control method and device for multimedia equipment and computer equipment |
| CN112180790B (en) * | 2020-09-29 | 2021-10-08 | 成都新潮传媒集团有限公司 | Energy-saving control method and device for multimedia equipment and computer equipment |
| CN112960524A (en) * | 2021-02-04 | 2021-06-15 | 日立楼宇技术（广州）有限公司 | Detection method, device, equipment and medium for elevator door |
| CN113401773A (en) * | 2021-05-21 | 2021-09-17 | 杭州优迈科技有限公司 | Elevator light curtain control method and device and electronic equipment |
| CN114212650A (en) * | 2021-12-16 | 2022-03-22 | 日立楼宇技术（广州）有限公司 | Elevator detection updating method, computer equipment and storage medium |
| CN114212650B (en) * | 2021-12-16 | 2023-09-08 | 日立楼宇技术（广州）有限公司 | Detection updating method for elevator, computer equipment and storage medium |
| CN116142935A (en) * | 2022-12-30 | 2023-05-23 | 杭州优迈科技有限公司 | Elevator light curtain scanning method and device and elevator light curtain system |
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