CN108698786A - The confirmation method and elevator control gear of inside line call function - Google Patents
The confirmation method and elevator control gear of inside line call function Download PDFInfo
- Publication number
- CN108698786A CN108698786A CN201680083300.8A CN201680083300A CN108698786A CN 108698786 A CN108698786 A CN 108698786A CN 201680083300 A CN201680083300 A CN 201680083300A CN 108698786 A CN108698786 A CN 108698786A
- Authority
- CN
- China
- Prior art keywords
- inside line
- car
- machine tool
- handset
- computer room
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The present invention makes inside line machine tool and inside line handset be in talking state, the inside line handset is placed in the environment that ring sound output from speaker echoes, ring sound is exported in the place for being provided with inside line machine tool, the ring sound is acquired with the microphone of inside line machine tool, it is exported from the loud speaker of inside line handset, the sound that echoes is acquired with the microphone of inside line handset, it will be exported from the loud speaker of inside line machine tool as the ring sound for sound return of echoing, measure the circuit voltage when loud speaker output of inside line machine tool, confirm it more than threshold value, thereby confirm that the call function between inside line machine tool and inside line handset.
Description
Technical field
The present invention relates in a kind of confirmation method and elevator control gear of inside line call function, especially elevator use
The confirmation method and elevator control gear of line telephone relation function.
Background technology
It is provided in lift car and the external inside line conversed.The inside line is to be trapped in electricity in personnel
In terraced car etc. when emergencies, it is connected to passenger and outside in car, the urgency traffic device for rescuing passenger needs periodically
Confirm call function.
About the call function confirmation of inside line, such as the record such as patent document 1, it is proposed that set in lift car
Recording device is set, confirms the call function of inside line.In patent document 1, inside line is provided with record in the car of elevator
Sound playback portion records and plays back the inspection sound sent out from inside line control circuit and external remote operation portion, record
Sound playback portion records the inspection sound sent from remote operation portion, when inside line control circuit calls remote operation portion, returns
The inspection signal is put, remote operation portion is sent to.Then, playback inspection of the remote operation portion to the inspection signal and reception of transmission
Sound is compared, and checks PABX Telephone System.Thereby, it is possible to 1 inspectors by remote operation portion, are exhaled from remote operation portion
It makes inside line in car be checked, and the inside line calling remote operation portion out of car, and carries out talking state
It checks.
Existing technical literature
Patent document
Patent document 1:Japanese Patent Laid-Open 7-123162 bulletins
Invention content
The technical problems to be solved by the invention
But the PABX Telephone System of patent document 1 is to confirm the call function of inside line, in lift car domestic demand
There is recording device.Therefore, it is also desirable to confirm that recording device main body has fault-free, this can not only increase cost, must also carry out
Maintenance operation.
The object of the present invention is to provide a kind of confirmation method and elevator control gear of inside line call function,
Without newly setting the equipment such as recording device, you can carry out inside line call function confirmation, cost can be inhibited to increase and reduce dimension
The trouble of guarantor.
Technical scheme applied to solve the technical problem
The present invention makes inside line machine tool and inside line handset be in talking state, which is placed on
In the environment that ring sound output from speaker echoes, ring sound is exported in the place for being provided with inside line machine tool, uses interior lines
The microphone of phone machine tool acquires the ring sound, is exported from the loud speaker of inside line handset, with the Mike of inside line handset
Elegance collection echoes sound, will be exported from the loud speaker of inside line machine tool as the ring sound for sound return of echoing, then measure in
Circuit voltage when the loud speaker output of line phone machine tool, confirms it more than threshold value, thereby confirms that inside line machine tool and interior
Call function between line phone handset.
Invention effect
Through the invention, without newly setting the equipment such as recording device, you can carry out inside line call function confirmation, can press down
This increase is made and reduces the trouble of maintenance.
Project, structure and effect other than the above can be defined according to the explanation of following implementation.
Description of the drawings
Fig. 1 is the skeleton diagram of an example for indicating the elevator entirety using the present invention.
Fig. 2A is the inside line detail drawing of one embodiment of the present of invention.
Fig. 2 B are to illustrate that the relay switch of one embodiment of the present of invention opens/closes the figure of mechanism.
Fig. 3 is the flow chart that the inside line call function of one embodiment of the present of invention confirms.
Fig. 4 is to illustrate that the circuit voltage based on computer room loud speaker confirms inside line call function in one embodiment of the present of invention
Concept map.
Specific implementation mode
Hereinafter, using description of the drawings one embodiment of the present of invention.
Fig. 1 shows an examples for the elevator entirety skeleton diagram for using the present invention.
In Fig. 1, car 1 and counterweight 2 are engaged with main rope 3 respectively, and main rope 3 is driven by traction machine (motor) 4.Traction machine
(motor) 4 supplies electric power from three-phase alternating-current supply 5, and the electricity for being supplied to traction machine (motor) 4 is controlled by control panel 6
Power.Control panel 6 is provided with electric power converter 7, control device 8 etc., which will be from three-phase alternating-current supply 5
Three-phase alternating current is converted into being suitable for the electric power of elevator action, which sends to electric power converter 7 and instruct.Control dress
Set sensor signal needed for 8 importing elevator controllings, various data ((believe destination in hall call signal, car by call signal
Number), the rotational pulse signal etc. of cage position signal, traction machine) (illustration omitted), and send control sedan-chair to electric power converter 7
The instruction of compartment 1 speed, car position.
Inside line (handset) 9 in the device i.e. car got in touch with external acquirement when urgent, sedan-chair are provided in car 1
Inside line (handset) 9 is made of microphone 92 in loud speaker in car 91 and car in compartment.It is additionally provided with interior lines electricity in car
Talk about challenge switch 93.In addition, being provided with destination button etc., illumination etc. in car, diagram is explanations are omitted hered.
In addition, computer room 10 be provided with for car in obtain the computer room inside line (machine tool) 11 of contact.In computer room
Line phone (machine tool) 11 is similarly made of computer room loud speaker 111 and computer room microphone 112.Computer room inside line is additionally provided with to exhale
Call off pass 113.In addition, though in the present embodiment, inside line machine tool is arranged in computer room, but is applied equally to interior lines
The case where in the administrator room of the building equipped with elevator is arranged in phone machine tool.
Equipment (illustration omitted) is connected by buttock line 12 with the control panel 6 of computer room on equipment and car in car, by tail
Equipment on equipment in car and car is connect by line 12 with power supply, and receives the control signal sent out from control panel 6.In addition, sedan-chair
Inside line (handset) 9 and computer room inside line (machine tool) 11 are connected via buttock line 12 in compartment.
Fig. 2A indicates the inside line detail drawing of one embodiment of the present of invention.
Fig. 2A indicates the detailed circuit of inside line (handset) 9 and computer room inside line (machine tool) 11 in car.By pressing sedan-chair
Inside line challenge switch 93 or computer room inside line challenge switch 113 can make interior lines in car to be started in compartment
Phone (handset) 9 and computer room inside line (machine tool) 11 are in connection status.By pressing inside line challenge switch in car
93 to be started, and can make the calling tone ring of computer room loud speaker 111, can also will be by 92 collected sound of microphone in car
Sound is exported with computer room loud speaker 111.In addition, by by machine room lower inside line challenge switch 113 to be started, can will be by
112 collected sound of computer room microphone is exported to loud speaker in car 91.In this way, the maintenance person of the passenger and computer room in car
It can converse between (being then the administrator of caretaker room when inside line machine tool is arranged in caretaker room).
Next, the confirmation system for closing inside line call function in this present embodiment illustrates.
As shown in Figure 2 A, cage side checks that relay 94 is connected in parallel with inside line challenge switch 93 in car, in addition computer room
Side checks that relay 114 is connected in parallel with computer room inside line challenge switch 113.In the present embodiment, by shown in Fig. 2 B
Circuit makes cage side check that relay 94 or computer room side check that relay 114 is in connection status.That is, by can be according to control
The output buffer for the command signal control on/off that disk 6 processed is sent out, to control relay.For example, by being examined to cage side
It looks into relay output buffer 95 and sends enabled instruction, to check 94 excitation of relay, conducting cage side inspection to cage side
Look into the contact of relay 94.As a result, relay is checked via with inside line challenge switch 93 is connected in parallel in car cage side
Device 94 makes inside line be in connection status.Similarly, by checking that relay output buffer 115 is sent to computer room side
Enabled instruction, to check that 114 excitation of relay, conducting computer room side check the contact of relay 114 to computer room side.It passes through as a result,
Relay 114 is checked by the computer room side being connected in parallel with computer room inside line challenge switch 113, inside line is made to be in connection shape
State.
According to the instruction sent out from control panel 6, relay output buffer 95 and computer room side can be checked to cage side
Check that relay automatically carries out on/off control with output buffer 115, thus, it is possible to automatically form for confirming interior lines
The inside line connection status of telephone relation can carry out the automatic inspection of following inside line call functions.
Next, using Fig. 3 and Fig. 4, illustrate the details of inside line call function confirmation method described in the present embodiment.
In the present embodiment, automatic to carry out inside line call according to the software program stored in the storage device of control device 8
Function confirms.The call function of inside line confirms previous one of the project as elevator maintenance inspection, is carried out by maintenance person, and
In the present embodiment, according to several days (such as 2,3 days) primary plan, confirmed by program, even if being provided with elevator
Place does not have maintenance person, or in the case where maintenance center maintenance person does not cope with specially, can carry out the call of inside line yet
Function confirms.As the new additional project in European elevator standard EN81-20/50, it is desirable that the function of inside line is inspected periodically,
And the present embodiment copes with such standard.If in addition, when having passenger in car carry out inside line call function confirm,
The passenger in car can be made to get a fright (service experience of damage passenger) due to the sound sent out when call confirms, therefore
It carries out confirming when no passenger in car particularly significant.In the present embodiment, program setting be hardly use elevator when
Between section the regulation moment start inside line call function confirm.
But elevator is to provide the equipment used within 24 hours, therefore do not know when passenger can climb up car.So this
Embodiment be confirm car in without passenger after, then carry out inside line call function confirm (step 1001).For example, base
(call signal in car, hall call signal shine in car the elevator controling information obtained in the control device 8 of control panel 6
Bright opening, shutdown signal etc.), judge in control device 8 certain time (such as 3 minutes or so) without calling in car or big
The Room calls, and go out in car intraoral illumination lamp state when, the not state of passenger is assert in car, in starting
Line telephone relation function confirms.
In step 1001, when judging to have passenger in car, continues the conventional operation (step 1014) of elevator, providing
After time (such as 10 minutes or so), the call function for starting inside line confirms.In addition, the call function in inside line is true
In recognizing, when hall call has occurred, the call function for cancelling inside line immediately confirms, carries out the conventional operation (step of elevator
1014).Then, next time or after the stipulated time (such as 10 minutes or so), then start inside line call function it is true
Recognize.Uneasy thereby, it is possible to not make passenger generate, the call function of automatic implementation inside line confirms.
In step 1001, when judging not having in car passenger, make to be in talking state (step between machine tool-handset
1002).That is, as described above, starting cage side checks that relay output buffer 95 and computer room side check relay output
Buffer 115 checks that relay 94 and computer room side check that 114 excitation of relay, conducting cage side check relay to cage side
94 and computer room side check relay 114 contact.Inside line becomes connection status as a result,.
Next, making 11 ring (step 1003) of computer room inside line (machine tool).That is, by making cage side check relay
94 contact conducting, presses in car inside line challenge switch 93 to be started, therefore raise one's voice from computer room to be equivalent to
Device 111 exports calling tone.In this way, the present embodiment has used the calling tone (ring of the computer room loud speaker 111 of ring when being called from handset
Resonant).Thereby, it is possible to carry out inside line call function confirmation by existing equipment.In addition, the work(of computer room loud speaker 111
Can confirm that can carry out in following step 1007, therefore also can be provided separately ring device with computer room loud speaker 111, and make it
Ring.
Next, with the ring sound (step 1004) in 112 acquisition step 1003 of computer room microphone.By computer room microphone
Loud speaker 91 exports (step 1005) to 112 collected ring sounds in the car of inside line (handset) 9 out of car.In car
Since elevator door is closed, so the ring sound that loud speaker 91 exports out of car echoes in car.Microphone 92 is adopted in car
Collect the sound (step 1006) that echoes of the ring sound.It is raised one's voice from machine tool by 92 collected ring sound (echo sound) of microphone in car
Device 111 exports (step 1007).State in step 1004~step 1007 in call between machine tool-handset, thus it is real successively
These steps are applied, as long as being in talking state, then other is not necessarily to and especially controls.
Next, stopping the ring (step 1008) of the computer room loud speaker 111 of computer room inside line (machine tool) 11.Then,
The circuit voltage for carrying out computer room loud speaker 111 diagnoses (step 1009).In circuit voltage diagnosis, it is defeated to measure computer room loud speaker 111
Circuit voltage (step when circuit voltage and computer room loud speaker when going out (when ring sound exports in step 1003) stop
1009).The circuit voltage measured is imported into control device 8, by control device 8 arithmetic unit decision circuitry voltage whether
More than defined threshold (step 1010).As shown in figure 4, when circuit voltage is more than threshold value, it is judged as inside line call work(
Normal (the step 1011) of energy, and when circuit voltage is less than threshold value, it is judged as that inside line call function has abnormal (step
1012).Then, judging to deposit when abnormal, via the circuit between control device 8 and maintenance center (illustration omitted), lead to
Report breaks down (Trouble Report), calls maintenance person's (step 1013).Later, inside line call function automatically confirms that pattern
It completes, restores conventional operation.
It is judged as that normal diagnostic result can be stored in depositing in control device 8 with confirming together with the date in step 1011
In reservoir, maintenance center can also be sent to via circuit.
The present embodiment is set to by 1) making at the inside line of computer room control panel and the inside line being set in car
In talking state, 2) the ring sound, then, 4 make the inside line ring of computer room, 3) are acquired with computer room microphone) in car
Loud speaker exports the ring sound, 5) the ring sound (echo sound) to echo in car is acquired with microphone in car, 6) machine is used again
Ring sound of the loud speaker output of room inside line as sound return of echoing in car, measures electricity when computer room loud speaker output
Road voltage confirms it more than threshold value, and thus, it is possible to automatically confirm that the two-way call between machine tool-handset.In addition, by such
Structure, it is not necessary that the new equipments such as recording device are arranged, you can implement inside line call function and confirm.
Also include various modifications example in addition, the present invention is not limited to above-described embodiment.For example, above-described embodiment be in order to
The detailed description for illustrating the present invention with being easily understood and carrying out, have to not necessarily have the entire infrastructure illustrated.In addition, can incite somebody to action
A part for certain example structure is substituted for the structure of other embodiment, can also increase other implementations in the structure of certain embodiment
The structure of example.And for a part for each example structure, it can add, delete, replace other structures.
For example, above-described embodiment is to confirm program based on the inside line call function stored in control device, according to rule
Fixed plan, it is automatic to carry out inside line call function confirmation, but for example can also start sedan-chair in computer room or the setting of administrator room
Compartment side checks that relay output buffer 95 and computer room side check the switch of relay output buffer 115, passes through startup
The switch starts inside line call function and confirms.In addition it is also possible to by sending out instruction from maintenance center to control panel, make
Cage side checks that relay output buffer 95 and computer room side check that relay output buffer 115 starts, and starts interior lines
Telephone relation function confirms.
In addition, be the situation that inside line handset is arranged in car in above-described embodiment, but can also be suitable for will be interior
Line phone handset is arranged on car or the case where pit etc. needs the position with outside coupling when urgent.Even if on car
Or in pit, can also be acquired with handset microphone the ring sound that be exported from handset loud speaker echo and return come echo
Sound.In addition, in addition to elevator, the inside line of handset is placed in the environment that ring sound echoes can also use the present invention.For example,
It can be utilized in the PABX Telephone System of foregrounding inside line machine tool etc. in hotel bathroom setting inside line handset
The sound that echoes in hotel bathroom carries out inside line call function confirmation.
Label declaration
1 car, 2 counterweights, 3 main ropes, 4 traction machines (motor), 5 three-phase alternating-current supplies, 6 control panels, 7 electrical power conversions
Device, 8 control devices, inside line (handset) in 9 cars, loud speaker in 91 cars, microphone in 92 cars, interior lines in 93 cars
Call switchs, and 94 cage sides check that relay, 95 cage sides check relay output buffer, 10 computer rooms, 11 computer rooms
Inside line (machine tool), 111 computer room loud speakers, 112 computer room microphones, 113 computer room inside line challenge switches, 114 computer room sides
Check that relay, 115 computer room sides check relay output buffer, 12 buttock lines.
Claims (7)
1. a kind of confirmation method of inside line call function confirms the call between inside line machine tool and inside line handset
Function, the inside line handset are arranged in the environment that ring sound output from speaker echoes, which is characterized in that
The inside line machine tool and the inside line handset is set to be in talking state,
Ring sound is exported from the place for being provided with the inside line machine tool,
The ring sound is acquired with the microphone of the inside line machine tool,
It will be exported from the loud speaker of the inside line handset with the collected ring sound of the microphone of the inside line machine tool,
The ring sound exported from the loud speaker of the inside line handset with the microphone acquisition of the inside line handset returns
Resonant,
It will be exported from the loud speaker of the inside line machine tool with the collected sound that echoes of the microphone of the inside line handset,
The inside line machine tool when ring sound in the place for making to be provided with the inside line machine tool stops is measured to raise one's voice
The circuit voltage of device,
The circuit voltage measured is compared with defined threshold, confirms the inside line machine tool and interior lines electricity
Talk about the call function between handset.
2. inside line call function confirmation method as described in claim 1, which is characterized in that
The talking state of the inside line machine tool and the inside line handset is by by machine tool side relay and handset side
The contact of relay is respectively turned on to carry out, and the machine tool side relay is in parallel with the challenge switch of inside line machine tool to be connected
It connects, the handset side relay and the challenge switch of the inside line handset are connected in parallel.
3. inside line call function confirmation method as claimed in claim 2, which is characterized in that
The inside line machine tool is disposed on the inside line machine tool of the control panel of elevator(lift) machine room,
The inside line handset is disposed on the inside line handset in lift car,
The program stored in control device based on the control panel starts the confirmation of call function according to the plan of regulation.
4. inside line call function confirmation method as claimed in claim 3, which is characterized in that
When starting to confirm call function based on described program,
The control device in the control information based on elevator, judge the elevator there is no passenger in use, controlled with
The contact of machine tool side relay and handset side relay is set to be connected.
5. inside line call function confirmation method as claimed in claim 4, which is characterized in that
In the case that the control device produces hall call signal when carrying out the confirmation of the call function, cutoff call
The confirmation of function, control elevator is so that it carries out conventional elevator operation.
6. a kind of elevator control gear, has:Car;Via the counterweight of main rope and car connection;Drive the main rope
The traction machine of rope;Inside line in car in the car is set;Be arranged elevator computer room or be provided with the elevator
Building caretaker room in computer room or caretaker room inside line, the elevator control gear control the motor of the traction machine
Driving, the elevator control gear is characterized in that having following procedure:
Inside line in the computer room or caretaker room inside line and the car is set to be in talking state,
Ring sound is exported with the computer room or caretaker room inside line,
The ring sound is acquired with the computer room or the microphone of caretaker room inside line,
It will be defeated with the loud speaker of the collected ring sound inside line out of described car of the microphone of the inside line machine tool
Go out,
The ring sound of the loud speaker output of the inside line out of described car is acquired with the microphone of inside line in the car
The sound that echoes in the car,
By with the collected sound that echoes of the microphone of inside line in the car from the computer room or caretaker room inside line
Loud speaker exports,
Measure the computer room when computer room or the ring sound of caretaker room inside line being made to stop or caretaker room inside line
The circuit voltage of loud speaker,
The circuit voltage measured is compared with defined threshold, confirms the computer room or caretaker room inside line and institute
State the call function between inside line in car.
7. elevator control gear as claimed in claim 6, which is characterized in that
Have:The computer room being connected in parallel with the challenge switch of the computer room or caretaker room inside line or caretaker room inside line side
Relay;And inside line side relay in the car being connected in parallel with the challenge switch of inside line in the car,
The control device is by by inside line side in the computer room or caretaker room inside line side relay and the car
The contact of relay is respectively turned on, to make inside line in the computer room or caretaker room inside line and the car be in logical
Speech phase.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/060667 WO2017168679A1 (en) | 2016-03-31 | 2016-03-31 | Intercom communication capability verification method and elevator control apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108698786A true CN108698786A (en) | 2018-10-23 |
| CN108698786B CN108698786B (en) | 2020-04-21 |
Family
ID=59962793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680083300.8A Active CN108698786B (en) | 2016-03-31 | 2016-03-31 | Method for confirming function of extension telephone call and elevator control device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108698786B (en) |
| WO (1) | WO2017168679A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112850401A (en) * | 2019-11-12 | 2021-05-28 | 奥的斯电梯公司 | Elevator car acoustic integrity checking |
| CN115151502A (en) * | 2020-02-17 | 2022-10-04 | 三菱电机大楼技术服务株式会社 | Point inspection device of external communication device for elevator and point inspection method using point inspection device |
| CN117320989A (en) * | 2021-05-20 | 2023-12-29 | 三菱电机楼宇解决方案株式会社 | Monitoring device for spot inspection of elevator interphone |
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| JPH07123162A (en) * | 1993-10-22 | 1995-05-12 | Mitsubishi Denki Bill Techno Service Kk | Interphone system for elevator and its inspection method |
| JPH07291546A (en) * | 1994-04-26 | 1995-11-07 | Mitsubishi Denki Bill Techno Service Kk | External communication device of elevator |
| JP2003089483A (en) * | 2001-09-20 | 2003-03-25 | Toshiba Elevator Co Ltd | Interphone traffic status recognition system for elevator |
| CN2711998Y (en) * | 2004-06-14 | 2005-07-20 | 上海天威电子电器厂 | Double-sound multi-frequency controlled elevator intercom bus system device |
| CN1968881A (en) * | 2005-04-28 | 2007-05-23 | 三菱电机株式会社 | Elevator monitoring system |
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| JP2007119106A (en) * | 2005-10-25 | 2007-05-17 | Mitsubishi Electric Building Techno Service Co Ltd | Automatic inspection device for elevator call device and its method |
| JP2010028686A (en) * | 2008-07-24 | 2010-02-04 | Mitsubishi Electric Building Techno Service Co Ltd | Intercom system |
| JP2013211614A (en) * | 2012-03-30 | 2013-10-10 | Noritz Corp | Remote control system |
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- 2016-03-31 CN CN201680083300.8A patent/CN108698786B/en active Active
- 2016-03-31 WO PCT/JP2016/060667 patent/WO2017168679A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07123162A (en) * | 1993-10-22 | 1995-05-12 | Mitsubishi Denki Bill Techno Service Kk | Interphone system for elevator and its inspection method |
| JPH07291546A (en) * | 1994-04-26 | 1995-11-07 | Mitsubishi Denki Bill Techno Service Kk | External communication device of elevator |
| JP2003089483A (en) * | 2001-09-20 | 2003-03-25 | Toshiba Elevator Co Ltd | Interphone traffic status recognition system for elevator |
| CN2711998Y (en) * | 2004-06-14 | 2005-07-20 | 上海天威电子电器厂 | Double-sound multi-frequency controlled elevator intercom bus system device |
| CN1968881A (en) * | 2005-04-28 | 2007-05-23 | 三菱电机株式会社 | Elevator monitoring system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112850401A (en) * | 2019-11-12 | 2021-05-28 | 奥的斯电梯公司 | Elevator car acoustic integrity checking |
| US11724911B2 (en) | 2019-11-12 | 2023-08-15 | Otis Elevator Company | Elevator car acoustic integrity check |
| CN115151502A (en) * | 2020-02-17 | 2022-10-04 | 三菱电机大楼技术服务株式会社 | Point inspection device of external communication device for elevator and point inspection method using point inspection device |
| CN115151502B (en) * | 2020-02-17 | 2023-08-08 | 三菱电机楼宇解决方案株式会社 | Point inspection device for elevator external communication device and point inspection method using same |
| CN117320989A (en) * | 2021-05-20 | 2023-12-29 | 三菱电机楼宇解决方案株式会社 | Monitoring device for spot inspection of elevator interphone |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108698786B (en) | 2020-04-21 |
| WO2017168679A1 (en) | 2017-10-05 |
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