CN110329858A - The talkback unit of lift car, the operation panel of lift car and elevator - Google Patents
The talkback unit of lift car, the operation panel of lift car and elevator Download PDFInfo
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- CN110329858A CN110329858A CN201910715150.3A CN201910715150A CN110329858A CN 110329858 A CN110329858 A CN 110329858A CN 201910715150 A CN201910715150 A CN 201910715150A CN 110329858 A CN110329858 A CN 110329858A
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- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000006870 function Effects 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 2
- 206010011469 Crying Diseases 0.000 description 1
- 206010022998 Irritability Diseases 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
- B66B1/14—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. push-buttons, for indirect control of movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
- B66B1/3423—Control system configuration, i.e. lay-out
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
A kind of talkback unit of lift car, operation panel and elevator.Emergency call button is provided in the lift car, display screen, car operational control panel and display screen control panel, the talkback unit includes microcontroller, first connector and the second connector, wherein microcontroller controls partitioned signal with emergency call button and car operational by the first connector and connect, and it controls partitioned signal with display screen by the second connector to connect, and microcontroller receives intercommunication enabling signal from emergency call button by the first connector after passenger presses emergency call button or by the first connector receives the intercommunication enabling signal from car operational control panel after elevator host or elevator(lift) machine room call extension talkback unit to start intercommunication function, and multiple display signal sequences are transmitted to by display screen control panel by the second connector, display screen control panel makes to show in response to multiple display signal Screen sequence shows image corresponding with multiple display signals.
Description
Technical field
The present invention relates to a kind of talkback unit of lift car, lift car operation panel and include the operation panel
Elevator.
Background technique
The talkback unit of elevator for realizing elevator interior passenger and remote control center call.It is pressed promptly in passenger
After call button, due to that cannot obtain the information in relation to call case and can not know extraneous circumstance, the possible irritability of passenger is not
Peace leads to that effective information can not be provided after establishing call with remote control center.In addition, working as elevator host or elevator(lift) machine room
When call extension talkback unit, in the case where talkback unit only provides call, passenger possibly can not be provided in time in elevator
Imitate information.In these cases, it usually cannot achieve and quickly and effectively pacify rescue.Existing lift car operation panel volume
Smaller, no sufficient space realizes the function other than call function.
Summary of the invention
Therefore, it is an object of the present invention to provide the operation panel of the talkback unit of lift car, lift car and comprising this
The elevator of operation panel, the talkback unit allow the operation panel of lift car tight by the way that additional connector is arranged
Call in the case where crying while providing call function and display function, small volume, of simple structure and low cost and safety beauty urgently
It sees.
The present invention relates to a kind of talkback unit of lift car, emergency call button, display are provided in the lift car
Screen, for connect with elevator main control unit signal with control lift car operation car operational control panel and for show
Display screen sends instruction to show the display screen control panel of image, which includes microcontroller, the first connector and second
Connector, wherein microcontroller controls partitioned signal with emergency call button and car operational by the first connector and connect, and
It controls partitioned signal with display screen by the second connector to connect, and wherein, microcontroller presses emergency call button in passenger
Pass through the first connector afterwards to receive the intercommunication enabling signal from emergency call button or divide in elevator host or elevator(lift) machine room
The intercommunication enabling signal from car operational control panel is received to start intercommunication by the first connector after machine calling talkback device
Function, and multiple display signal sequences are transmitted to by display screen control panel by the second connector, display screen control panel in response to
Multiple display signal makes display screen sequence show image corresponding with multiple display signals.
In one embodiment, multiple display signal includes urgent call enabling signal, urgent call connection signal
With urgent call speech signal.
In one embodiment, the second connector includes first interface, second interface, third interface and the 4th interface,
Wherein, microcontroller transmits the first signal to display screen control panel using as reference signal by first interface；
It is micro- after passenger presses emergency call button or after elevator host or elevator(lift) machine room call extension talkback unit
Controller transmits second signal to display screen control panel by second interface, and display screen control panel is receiving the first signal and the
Control display screen shows image corresponding with urgent call enabling signal after the urgent call enabling signal that binary signal is formed；
After a period, microcontroller stops transmitting second signal by second interface, while passing through third interface
Third signal is transmitted to display screen control panel, display screen control panel is receiving the first signal and third signal is formed urgent exhales
Control display screen after connection signal is made to show image corresponding with urgent call connection signal；
It is received after the call from car operational control panel has been turned on signal in microcontroller, microcontroller stopping passes through
Third interface transmits third signal, while transmitting fourth signal to display screen control panel, display screen control panel by the 4th interface
Control display screen shows logical with urgent call after the urgent call speech signal for receiving the first signal and fourth signal formation
Talk about the corresponding image of signal；
After microcontroller receives the call ending signal from car operational control panel, microcontroller stops by the
Four interfaces transmit fourth signal, and display screen control panel, which controls display screen, to be stopped showing image relevant to urgent call.
In one embodiment, image corresponding with urgent call speech signal includes indicating ongoing information of conversing
And text prompt information, passenger can pass through talkback unit and extraneous call according to text prompt information.
The invention further relates to a kind of operation panel of lift car, which includes intercommunication dress as described above
It sets, emergency call button, display screen, car operational control panel and display screen control panel.
In one embodiment, which further includes chromacoder, and the second connector of talkback unit is logical
It crosses chromacoder to connect with display screen control partitioned signal, which will convert from the signal of the second connector
For the signal for being suitable for display screen control panel.
In one embodiment, car operational control panel is connect with display screen control partitioned signal, to control display screen display
Show floor information.
In one embodiment, display screen is touching display screen, after passenger carries out touch operation on a display screen,
Floor signal is transmitted to elevator main control unit, elevator master control by display screen control panel and car operational control panel by display screen
Device processed controls the operation of lift car in response to floor signal.
In one embodiment, car operational control panel controls partitioned signal by chromacoder and display screen and connects
It connects, which is converted to the signal for being suitable for display screen control panel by the signal from car operational control panel and will
Signal from display screen control panel is converted to the signal for being suitable for car operational control panel.
In one embodiment, which includes the first display area and the second display area, wherein the first display
Region shows floor information, and the sequence display when lift car is in emergency call situations of the second display area is opened with urgent call
Dynamic signal, urgent call connection signal and the corresponding image of urgent call speech signal.
The invention further relates to a kind of elevator, which includes operation panel as described above.
Detailed description of the invention
From the preferred embodiment of the present invention being described in detail with reference to the accompanying drawing, advantages and objects of the present invention can be with
It is better understood.In order to preferably show the relationship of each component in the accompanying drawings, attached drawing is not necessarily drawn to scale.In attached drawing:
Fig. 1 is the side view of one embodiment of the talkback unit of lift car of the invention；
Fig. 2 is the floor map of one embodiment of the talkback unit of lift car of the invention；
Fig. 3 is the schematic diagram of one embodiment of the operation panel of lift car of the invention；
Fig. 4 is the circuit connection block diagram of one embodiment of the operation panel of lift car of the invention.
Specific embodiment
It will be described in detail with reference to the accompanying drawings each embodiment according to the present invention.Here it is to be noted that it in the accompanying drawings,
It assigns identical appended drawing reference to component part substantially with same or like structure and function, and will omit about it
Repeated description.If not otherwise specified, term " on " herein and "lower" are used for the purpose of describing the phase of each component
It to position, does not limit the scope of the invention, without departing from the scope of the invention, "upper" can be "lower"." the
One " and its variant description just for the sake of distinguishing each component, do not limit the scope of the invention, do not departing from model of the invention
In the case where enclosing, " first component " can be written as " second component " etc..
The attached drawing of this specification is schematic diagram, aids in illustrating design of the invention, it is schematically indicated the shape of each section
And its correlation.
In the following, detailed description is according to the preferred embodiment of the present invention referring to figs. 1 to Fig. 4.
Fig. 1 and Fig. 2 shows the schematic diagram of 1 different directions of talkback unit of lift car of the invention.
As shown in Figure 1, the talkback unit 1 of lift car includes being set to the intracorporal microcontroller of its shell (not show in figure
Out) and the first connector 2 and the second connector 3.The interface of first connector 2 and the second connector 3 is exposed to outside shell.
In the same side for the shell that first connector and the second connector shown in Fig. 1 are disposed side by side on talkback unit.First connects
On the not ipsilateral for connecing the shell that talkback unit can also be arranged in device and the second connector.
As shown in Fig. 2, talkback unit 1 further includes audio output device 4 and voice input device 5.Audio output device 4
For example loudspeaker, voice input device 5 are, for example, microphone.In addition, talkback unit 1 further includes being set to consolidating for its shell both ends
Plug-in unit 6 is determined, for talkback unit to be fixed in the operation panel of lift car.For example, by the way that screw is passed through fixing pluge
On recess, on the shell for the operation panel that talkback unit can be tightened in lift car.
Inside after the operation panel 100 that Fig. 3 shows lift car according to an embodiment of the invention is opened shows
It is intended to.The operation panel 100 includes emergency call button 7, display screen 8, for connecting with elevator main control unit signal to control
The car operational control panel 9 of lift car operation processed, for sending instruction to display screen to show the display screen control panel of image
10 and talkback unit 1.In addition, operation panel shown in Fig. 3 further includes chromacoder 11.
Display screen 8 in Fig. 3 is arranged on the shell of operation panel, and for example, touching display screen, including first
Display area 12 and the second display area 13, they are disposed side by side on the shell of operation panel.The display of first display area 12
Floor information carries out touch selection for passenger, shows current floor for example, by using different colours, purpose floor, can go to building
Layer, elevator traffic direction etc..Second display area 13 can elevator operate normally when read clock information, or display picture
Deng.When lift car is in emergency call situations, the second display area 13 can show image related with emergency call situations.
As shown in Figure 3, talkback unit 1 is arranged on the inside of the shell of operation panel, positioned at the lower section of display screen 8, and
The loudspeaker and microphone of talkback unit are aligned with the corresponding aperture on shell.Emergency call button 7 is set under talkback unit 1
Side, and to be aligned with the corresponding aperture on shell, allow passenger to press the button to start emergency call situations.
Car operational control panel 9, display screen control panel 10 and chromacoder 11 are arranged at the shell of operation panel
It is formed by chamber with lift car side wall.Car operational control panel 9 can be programmable single-chip microcontroller.Display screen control panel 10
It can be LED display control card, memory is arranged inside, so that signal sends corresponding idsplay order extremely based on the received
LED display.Chromacoder 11 is, for example, level translator.
Fig. 4 shows the circuit connection block diagram of the operation panel of lift car according to an embodiment of the invention.Figure
Shown in all parts position be it is schematical, do not represent physical location of all parts in operation panel.
The microcontroller of talkback unit 1 is believed by the first connector 2 with emergency call button 7 and car operational control panel 9
Number connection.Emergency call button 7 is also connect with 9 signal of car operational control panel.For example, pressing emergency call button 7 in passenger
Afterwards, microcontroller starts intercommunication function by the first connector intercommunication enabling signal of the reception from emergency call button,
After talkthrough, passenger can be conversed by talkback unit and elevator host or elevator(lift) machine room extension set.When elevator host or electricity
When terraced computer room call extension talkback unit, microcontroller receives the intercommunication from car operational control panel 9 by the first connector
Enabling signal starts intercommunication function, and after talkthrough, passenger can also pass through talkback unit and elevator host or elevator(lift) machine room
Extension set is conversed.In addition, car operational control panel 9 is the power supply of talkback unit 1 by the first connector.
Referring again to FIGS. 1, there are four interface, two of them interfaces (such as two interfaces in left side) for the first connector 2 tool
For connecting with 7 signal of emergency call button, other two interface (such as two interfaces in right side) with car operational for controlling
Plate 9 connects.
In addition, microcontroller is connect by the second connector 3 with 11 signal of chromacoder, and then controlled with display screen
The connection of 10 signal of plate.Chromacoder 11, which is converted to the signal from the second connector 3, is suitable for display screen control panel 10
Signal.For example, the signal after conversion is transmitted to display screen control panel 10 by RS232 interface by chromacoder 11.?
Herein, different from the signal standards of display screen control panel or communication transport protocols due to talkback unit and need chromacoder
Signal is converted.However, according to the actual situation, chromacoder is not necessary to operation panel.
When elevator is in emergency call situations, that is to say, that after passenger presses emergency call button or in elevator master
After machine or elevator(lift) machine room call extension talkback unit, the microcontroller of talkback unit 1 is believed multiple displays by the second connector 3
Number sequential delivery to display screen control panel 10, display screen control panel 10 keeps display screen 8 sequentially aobvious in response to multiple display signal
Show image corresponding with multiple display signal.As shown in figure 4, multiple display signals are transmitted to by the second connector 3
Chromacoder 11 is transmitted to display screen control panel 10 after conversion.Display screen control panel 10 is in response to multiple display
Corresponding idsplay order is sent to display screen 8 by signal, and display screen 8 shows corresponding image according to idsplay order.
For example, multiple display signals include urgent call enabling signal, urgent call connection signal and urgent call call
Signal.
Referring again to FIGS. 1, the second connector 3 includes a total of five interface, they are respectively to array from left to right
First interface 31, second interface 32, third interface 33, the 4th interface 34 and the 5th interface 35.5th interface 35 is NC interface.?
In other embodiments, the second connector can only include four interface 31-34.
Microcontroller is transmitted to display screen control by the first signal of transmission of first interface 31 to chromacoder 11
Making sheet 10, using as reference signal.For example, the first signal is high level direct current signal.
It is micro- after passenger presses emergency call button or after elevator host or elevator(lift) machine room call extension talkback unit
Controller transmits second signal (such as low level signal) to chromacoder 11 by second interface 32, and second signal is passed through
Display screen control panel 10 is transferred to after conversion.At display screen control panel, the first signal and second signal are for example by comparing
Device forms urgent call enabling signal.Display screen control panel controls the second display area after receiving urgent call enabling signal
13 displays image corresponding with urgent call enabling signal.Image corresponding with urgent call enabling signal shows current to passenger
Urgent call is had been started up, to pacify stranded passenger, for example, alarm bell icon.
After a period, such as after one second, microcontroller stops transmitting second signal by second interface 32, together
When third signal (such as low level signal) is transmitted to chromacoder 11 by third interface 33, third signal is by conversion
After be transferred to display screen control panel 10.At display screen control panel, the first signal and third signal for example pass through comparator shape
At urgent call connection signal.It is aobvious that display screen control panel controls the second display area 13 after receiving urgent call connection signal
Show image corresponding with urgent call connection signal.Image corresponding with urgent call connection signal shows lift car to passenger
Talkback unit connect with elevator host or elevator(lift) machine room extension set (such as master control room), for example, Call Waiting figure
Mark.
It is received after the call from car operational control panel has been turned on signal in microcontroller, microcontroller stopping passes through
Third interface 33 transmits third signal, while being turned by the 4th interface 34 transmission fourth signal (such as low level signal) to signal
Changing device 11, fourth signal are transferred to display screen control panel 10 after conversion.At display screen control panel, the first signal with
Fourth signal for example forms urgent call speech signal by comparator.Display screen control panel is receiving urgent call call letter
The second display area 13 is controlled after number shows image corresponding with urgent call speech signal.It is corresponding with urgent call speech signal
Image include indicating the ongoing information conversed, to be shown at this time and in the call of elevator master control room to passenger.In addition,
Image corresponding with urgent call speech signal includes text prompt information, and passenger can pass through intercommunication according to text prompt information
Device (i.e. the voice input device 5 of talkback unit 1) and extraneous call.Text prompt information may include that for example problem " please describe
Your current state " and multiple answer choices, for example, " someone is injured ", " you have been trapped in elevator ", " elevator moves
Move ", " door is closed " and " have several personal inside ".Passenger provides according to prompt information about elevator interior
Personnel and facility information.
After microcontroller receives the call ending signal from car operational control panel, microcontroller stops by the
Four interfaces 34 transmit fourth signal, and the second display area 13 stops display under the control of display screen control panel 10 and promptly exhales
It is relevant image, is restored to normal work interface.
The above embodiment of the present invention shows image related with urgent call, but this hair using the second display area 13
Bright without being limited thereto, display screen can also no longer show floor information after receiving urgent call and showing enabling signal, only show
Image related with urgent call.
In other embodiments, comparator may also be arranged in chromacoder, i.e. chromacoder is to coming from
The signal of second, third and the 4th interface and the reference signal from first interface are compared to obtain multiple displays letters respectively
Number.
In addition, second, third and fourth signal can be the signal of same level or the signal of varying level.
As shown in figure 4, car operational control panel 9 is connect by chromacoder 11 with 10 signal of display screen control panel,
To carry out two-way communication.Chromacoder 11, which is converted to the signal from car operational control panel 9, is suitable for display screen control
The signal of making sheet 10 and the signal from display screen control panel 10 is converted to the signal for being suitable for car operational control panel 9.Sedan-chair
Compartment operation control panel 9 controls display screen (such as first display area 12 of display screen) and shows floor information.When passenger is for example
After carrying out touch operation on first display area 12, display screen sends floor signal to display screen control panel 10, display screen control
Floor signal after conversion is sent to car operational control panel 9, car operational control panel 9 by chromacoder 11 by plate 10
Then respective storey signal is transmitted to elevator main control unit, the floor signal that elevator main control unit is inputted in response to passenger
The operation of lift car is controlled, such as runs carriage to the purpose floor of passenger.
In addition, operation panel further includes backup power source (not shown), in elevator in one embodiment of the present of invention
It is emergency call button power supply after power loss.As shown in figure 4, car operational control panel 9 is by other route (such as in Fig. 4
Leftmost route between emergency call button 7 and car operational control panel 9) it is connect with emergency call button 7, to be lost in elevator
It powers after electricity for emergency call button, so that trapped person is easy discovery emergency call button.
Elevator of the invention includes the operation panel of lift car described above, which is arranged on the inside of elevator
On wall.
Talkback unit of the invention by the way that additional connector is arranged, make it possible to lift car operation panel it is aobvious
Show screen display information related with urgent call, to pacify the stranded passenger in elevator, and realizes effective friendship with passenger
Stream.Therefore, the operation panel of lift car of the invention can provide simultaneously call function in the case of an emergency call and show
Show that function, small volume, of simple structure and low cost and safety are beautiful.
Each technical characteristic of above-mentioned disclosure is not limited to disclosed and other feature combination, and those skilled in the art are also
Other combinations between each technical characteristic can be carried out according to goal of the invention, be subject to realize the present invention purpose.
Claims (11)
1. a kind of talkback unit of lift car, emergency call button, display screen are provided in the lift car, is used for and elevator
The connection of main control unit signal is instructed to control the car operational control panel of lift car operation and for sending to display screen
To show the display screen control panel of image, which is characterized in that
The talkback unit includes microcontroller, the first connector and the second connector,
Wherein, microcontroller controls partitioned signal with emergency call button and car operational by the first connector and connect, and leads to
The second connector is crossed to connect with display screen control partitioned signal, and
Wherein, microcontroller is received by the first connector from emergency call button after passenger presses emergency call button
Intercommunication enabling signal is come from after elevator host or elevator(lift) machine room call extension talkback unit by the reception of the first connector
The intercommunication enabling signal of car operational control panel starts intercommunication function, and by the second connector by multiple display signal sequences
It is transmitted to display screen control panel, display screen control panel makes the display of display screen sequence and multiple displays in response to multiple display signal
The corresponding image of signal.
2. talkback unit as described in claim 1, which is characterized in that multiple display signal includes urgent call starting letter
Number, urgent call connection signal and urgent call speech signal.
3. talkback unit as claimed in claim 2, which is characterized in that the second connector includes first interface, second interface,
Three interfaces and the 4th interface,
Wherein, microcontroller transmits the first signal to display screen control panel using as reference signal by first interface；
After passenger presses emergency call button or after elevator host or elevator(lift) machine room call extension talkback unit, microcontroller
Device transmits second signal to display screen control panel by second interface, and display screen control panel is receiving the first signal and the second letter
Number formed urgent call enabling signal after control display screen show image corresponding with urgent call enabling signal；
After a period, microcontroller stops transmitting second signal by second interface, while being transmitted by third interface
Third signal to display screen control panel, display screen control panel connects in the urgent call for receiving the first signal and the formation of third signal
Control display screen shows image corresponding with urgent call connection signal after connecing signal；
It is received after the call from car operational control panel has been turned on signal in microcontroller, microcontroller stopping passes through third
Interface transmits third signal, while transmitting fourth signal to display screen control panel by the 4th interface, and display screen control panel is connecing
Control display screen is shown and urgent call call letter after receiving the urgent call speech signal that the first signal is formed with fourth signal
Number corresponding image；
After microcontroller receives the call ending signal from car operational control panel, microcontroller stops connecing by the 4th
Port transmission fourth signal, display screen control panel, which controls display screen, to be stopped showing image relevant to urgent call.
4. talkback unit as claimed in claim 3, which is characterized in that image corresponding with urgent call speech signal includes table
Show the ongoing information of call and text prompt information, passenger can be logical by talkback unit and the external world according to text prompt information
Words.
5. a kind of operation panel of lift car, which is characterized in that the operation panel includes as any in the claims 1-4
Talkback unit described in, emergency call button, display screen, car operational control panel and display screen control panel.
6. operation panel as claimed in claim 5, which is characterized in that the operation panel further includes chromacoder, intercommunication
Second connector of device controls partitioned signal by chromacoder and display screen and connect, which will come from the
The signal of two connectors is converted to the signal for being suitable for display screen control panel.
7. operation panel as claimed in claim 6, which is characterized in that car operational control panel and display screen control partitioned signal connect
It connects, shows floor information to control display screen.
8. operation panel as claimed in claim 7, which is characterized in that display screen is touching display screen, when passenger is showing
After carrying out touch operation on screen, floor signal is transmitted to elevator by display screen control panel and car operational control panel by display screen
Main control unit, elevator main control unit control the operation of lift car in response to floor signal.
9. operation panel as claimed in claim 8, which is characterized in that car operational control panel is by chromacoder and shows
Display screen controls partitioned signal connection, which, which is converted to the signal from car operational control panel, is suitable for display screen
The signal of control panel and the signal from display screen control panel is converted to the signal for being suitable for car operational control panel.
10. operation panel as claimed in claim 7, which is characterized in that the display screen includes that the first display area and second are aobvious
Show region, wherein the first display area shows floor information, the second display area is when lift car is in emergency call situations
Sequence shows image corresponding with urgent call enabling signal, urgent call connection signal and urgent call speech signal.
11. a kind of elevator, which is characterized in that the elevator includes the operation panel as described in any one of claim 5-10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910715150.3A CN110329858A (en) | 2019-08-02 | 2019-08-02 | The talkback unit of lift car, the operation panel of lift car and elevator |
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| CN201910715150.3A CN110329858A (en) | 2019-08-02 | 2019-08-02 | The talkback unit of lift car, the operation panel of lift car and elevator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111392536A (en) * | 2020-04-16 | 2020-07-10 | 施密特电梯有限公司 | Multifunctional communication and APP combined automatic calling landing |
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