CN109039371A - Ferris wheel and its microwave transmission system, microwave transmission unit - Google Patents
Ferris wheel and its microwave transmission system, microwave transmission unit Download PDFInfo
- Publication number
- CN109039371A CN109039371A CN201811107728.9A CN201811107728A CN109039371A CN 109039371 A CN109039371 A CN 109039371A CN 201811107728 A CN201811107728 A CN 201811107728A CN 109039371 A CN109039371 A CN 109039371A
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- microwave transmission
- transmission unit
- processing module
- receiver
- electrically connected
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 97
- 238000012545 processing Methods 0.000 claims abstract description 46
- 238000004891 communication Methods 0.000 claims abstract description 17
- 238000012544 monitoring process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- ZCJJIQHVZCFSGZ-UHFFFAOYSA-N 2,8-bis(diphenylphosphoryl)dibenzothiophene Chemical compound C=1C=CC=CC=1P(C=1C=C2C3=CC(=CC=C3SC2=CC=1)P(=O)(C=1C=CC=CC=1)C=1C=CC=CC=1)(=O)C1=CC=CC=C1 ZCJJIQHVZCFSGZ-UHFFFAOYSA-N 0.000 description 1
- 206010010144 Completed suicide Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63G—MERRY-GO-ROUNDS; SWINGS; ROCKING-HORSES; CHUTES; SWITCHBACKS; SIMILAR DEVICES FOR PUBLIC AMUSEMENT
- A63G27/00—Russian swings; Great wheels, e.g. Ferris wheels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
Abstract
The invention discloses a kind of microwave transmission units, including at least one antenna element, for receiving or sending radiofrequency signal；Radio-frequency receiving-transmitting processing module has the transmitter for receiving the receiver of radiofrequency signal and for emitting radiofrequency signal, and the output end of the input terminal of the receiver and the transmitter is switchably connected with the antenna element；And baseband processing module, the input terminal of the baseband processing module is electrically connected with the output end of the receiver, output end is electrically connected with the input terminal of the transmitter, for the received radiofrequency signal of the receiver to be carried out demodulation and modulated radio signal so that the transmitter emits.The invention also discloses a kind of microwave transmission systems.The invention discloses a kind of ferris wheel and its microwave transmission systems.Its structure is simple, at low cost, it can be ensured that the stability and reliability of two-way communication between the microwave transmission unit in ferris wheel in carriage and the indoor microwave transmission unit of control.
Description
Technical field
Microwave transmission system, microwave transmission unit the present invention relates to a kind of ferris wheel and for the monitoring of ferris wheel carriage.
Background technique
In the large-scale recreation facility of modernization, ferris wheel has become increasingly popular because of its high ornamental value.However, because of skyscraping
Bulky, liftoff height is taken turns, safety becomes the important foundation of the project normal operation.In every security factor of ferris wheel
In, ground level control room is an important content to the real-time video monitoring for skyborne carriage of floaing.Pass through real-time video monitoring, ground
Face control room can observe the issuable unusual behavior of tourist in carriage, in time by carrying out ditch to the carriage tourist that makes peace in real time
It is logical, and some other measure is taken, intervene all kinds of dangerous (such as the tourist's destruction carriage skip suicides, explosion that may occur in time
Terrorist activity etc.).With the improvement of people ' s living standards, in addition, experience consumption also becomes trend, provides amusement for client
High-resolution picture and video in the process becomes the consumption option of high-end recreational facilities.
Existing product is using WiFi scheme, using control room as AP (Access Point, the accessing wirelessly of WiFi
Node), carriage is then used as terminal.WiFi carries out duplex using Aloha algorithm competition-based, therefore, works as ferris wheel
There are many number of elevator, concurrent big data rate when, will certainly cause to transmit retardation and the case where transmission goes offline.In addition,
The interference of the type selecting and skyscraper wheel structure of antenna and transceiver causes the distribution of local space RF energy to be unable to satisfy the dynamic of system
State area requirement can also become the unstable immediate cause of system.It is had the following deficiencies: when concrete application
(1) during monitoring in real time, there is communication disruption in part carriage not timing, and monitoring can not carry out, and tourist's flow of the people is big
When be especially apparent；
(2) the uninterrupted carriage of video has part to cannot achieve real-time intercommunication；
(3), there is the delay of various degrees of video in the carriage of video monitoring real-time perfoming, and the length of delay is from 1s~10s etc.；
(4) video quality is not high, estimates its transmission rate no more than 300kbps, and video flow velocity is unstable, when and it is clear, when
And it obscures.
Drawbacks described above, especially defect (1)~(3) are under specific occasion, it may be possible to fatal.
Summary of the invention
The present invention provides a kind of ferris wheel and its microwave transmission system, microwave transmission unit to solve above-mentioned technical problem,
Its structure is simple, at low cost, it can be ensured that microwave transmission unit and the indoor microwave transmission of control in ferris wheel in carriage fill
The stability and reliability of two-way communication between setting.
In order to solve the above technical problems, the present invention provides a kind of microwave transmission unit, comprising: at least one antenna element,
For receiving or sending radiofrequency signal；Radio-frequency receiving-transmitting processing module has for receiving the receiver of radiofrequency signal and being used for
Emit radiofrequency signal transmitter, and the output end of the input terminal of the receiver and the transmitter switchably with the day
The conducting of line unit；And baseband processing module, the input terminal of the baseband processing module and the output end of the receiver are electrically connected
Connect, output end is electrically connected with the input terminal of the transmitter, for by the received radiofrequency signal of the receiver demodulate with
And modulated radio signal emits for the transmitter.
Further, the radio-frequency receiving-transmitting processing module includes the radio-frequency receiving-transmitting core being electrically connected with the baseband processing module
Piece and the switching being electrically connected respectively with the antenna element and the baseband processing module switch, in the rf chip
With the receiver and the transmitter, switching switch under the control of the baseband processing module selectively with institute
It states receiver or the transmitting mechatronics and then realizes transmitting-receiving switching.
Further, the radio-frequency receiving-transmitting processing module includes that the low noise being electrically connected with the input terminal of the receiver is put
Big device and the power amplifier being electrically connected with the output end of the transmitter, the switching switch is in the baseband processing module
Control under be selectively electrically connected with the low-noise amplifier or the power amplifier.
Further, the antenna element is set as more than two, and the switching switch is in the baseband processing module
Selectively the receiver or the transmitter are electrically connected with antenna element described in one of them under control.
Further, the baseband processing module is cut in the index satisfaction for detecting the received radiofrequency signal of the receiver
The switching switch is controlled when changing condition to switch to and antenna element described in another from the antenna element being currently electrically connected
It is electrically connected until being unsatisfactory for switching condition；The index includes signal-to-noise ratio, and the switching switch is in signal-to-noise ratio lower than setting
Another antenna element is switched to when value.
Further, the baseband processing module includes processor, analog-digital converter and digital analog converter, the modulus
Converter is electrically connected between the output end of the receiver and the processor, and the digital analog converter is electrically connected to the hair
It penetrates between the input terminal of machine and the processor；The processor is FPGA.
Further, the microwave transmission unit is configured as carrying out uplink and downlink communication based on TDD agreement and TDMA agreement.
In order to solve the above technical problems, the present invention provides a kind of microwave transmission system, including more than two as any of the above-described
Microwave transmission unit described in item embodiment；Wherein a microwave transmission unit is configured as wireless access node, remaining institute
It states microwave transmission unit and is configured as terminal；It is configured as being configured as between the microwave transmission unit of terminal mutually obstructed
Letter, be configured as the microwave transmission unit of terminal and be configured as wireless access node the microwave transmission unit between
It is configured as two-way communication.
In order to solve the above technical problems, the present invention provides a kind of ferris wheel, a control room, more than one carriage and
Microwave transmission system as described in any of the above-described embodiment；The microwave transmission unit for being configured as wireless access node is installed on
The control room, the microwave transmission unit correspondence for being configured as terminal are installed on the carriage.
Further, camera, loudspeaker and microphone, the camera, the loudspeaker are installed in the carriage
And the microphone is electrically connected with the baseband processing module in the microwave transmission unit in the carriage；Correspondingly, the control
Indoor location has display screen, loudspeaker and microphone, the display screen, the loudspeaker and the microphone and the control room
Baseband processing module electrical connection in interior microwave transmission unit.
Ferris wheel and its microwave transmission system of the invention, microwave transmission unit, have the following beneficial effects:
The stronger microwave point-to-multipoint transmission scheme of real-time, resultant force matching system dynamic model are used by getting around WiFi agreement
It encloses, can be avoided the system instability due to the more generation of terminal quantity, especially in ferris wheel, it can be ensured that carriage
The stability and reliability of two-way communication between interior microwave transmission unit and the indoor microwave transmission unit of control, and its structure
Simply, at low cost.
Detailed description of the invention
Fig. 1 is the electrical block diagram of microwave transmission unit of the present invention.
Specific embodiment
The present invention is described in detail with embodiment with reference to the accompanying drawing.
The present invention provides a kind of ferris wheel.The ferris wheel includes the control room for being usually located at ground, more than one
Carriage and a set of microwave transmission system.In a medium-and-large-sized ferris wheel, the quantity of carriage can generally achieve dozens of,
And corresponding, it is desirable to if being monitored to all carriages, which needs to include quantity to be carriage and control
A microwave transmission unit is respectively mounted in multiple microwave transmission units of the sum of number of chambers amount processed, control room and each carriage.It is installed on
The microwave transmission unit of control room and the structure and principle of the microwave transmission unit for being installed on carriage are identical or essentially identical.
Wherein, the microwave transmission unit for being installed on control room is configured as wireless access node and carries out using and corresponding to peace
Microwave transmission unit loaded on carriage be configured as terminal carry out using.Further, in order to facilitate control room to the prison of carriage
Control, as being configured as not communicating mutually between the microwave transmission unit of terminal, and microwave transmission unit and conduct as terminal
The microwave transmission unit of wireless access node is configured as being in communication with each other.Each microwave transmission unit is configured as based on TDD(Time
Division Duplex, time division duplex) agreement and TDMA(Time Division Multiple Access, time division multiple acess) association
View carries out uplink and downlink communication, and then can only be with one of them as the microwave transmission unit of wireless access node in same time slot
Microwave transmission unit as terminal is received or is emitted radiofrequency signal.
Specifically, as shown in Figure 1, above-mentioned microwave transmission unit includes antenna element 1, radio-frequency receiving-transmitting processing module 2
And baseband processing module 3.Antenna element 1 is set as at least one, for receiving or sending radiofrequency signal.At radio-frequency receiving-transmitting
Module 2 is managed, there is Receiver And Transmitter mutually indepedent and being isolated, for receiving radiofrequency signal, transmitter is used for receiver
Emit radiofrequency signal, wherein the input terminal of receiver and the output end of transmitter are switchably connected with antenna element 1 to realize
Transmitting-receiving switching.Baseband processing module 3, input terminal is electrically connected with the output end of receiver, the input terminal of output end and transmitter
Electrical connection, for the received radiofrequency signal of receiver to be carried out demodulation and modulated radio signal for transmitter transmitting.
The microwave transmission system is communicated by using multiple microwave transmission units, is used by getting around WiFi agreement
The stronger microwave point-to-multipoint transmission scheme of real-time, resultant force matching system dynamic range, can be avoided due to terminal quantity compared with
The raw system instability of fecund, and its structure is simple, at low cost.
Wherein, antenna element 1 is understood that be made of at least one antenna.When antenna element 1 is by two or more days
When line is constituted, only there is the port connecting with radio-frequency receiving-transmitting processing module 2.In addition, in antenna element 1 antenna structure
Or type can be not construed as limiting, for example flagpole antenna or pasted sheet type antenna can be used.
In one embodiment, radio-frequency receiving-transmitting processing module 2 includes a rf chip 21 and a switching switch 22.
The rf chip 21 is electrically connected with baseband processing module 3, the switching switch 22 respectively with antenna element 1 and Base-Band Processing mould
Block 3 is electrically connected.Above-mentioned Receiver And Transmitter is integrated in rf chip 21.Switch switch 22 in baseband processing module
It is selectively electrically connected with the output end of the input terminal of receiver or transmitter under 3 control to realize and be led with antenna element 1
Logical and then realization transmitting-receiving switching.
Further, radio-frequency receiving-transmitting processing module 2 includes the low-noise amplifier being electrically connected with the input terminal of receiver
(LNA, Low Noise Amplifier) 23 and power amplifier (PA, the Power being electrically connected with the output end of transmitter
Amplifier) 24, the setting of the low-noise amplifier 23 is the signal-to-noise ratio in order to improve output, and the power amplifier 24
Setting is to improve output power.In turn, switching switch 22 under the control of baseband processing module 3 selectively with low noise
Amplifier 23 or power amplifier 24 are electrically connected.
In a preferred embodiment, antenna element 1 is set as two.Switch switch 22 in the control of baseband processing module 3
Under selectively receiver or transmitter are electrically connected with one of antenna element 1.Preferably, baseband processing module 3 is being examined
When measuring the index of the received radiofrequency signal of receiver and meeting switching condition, just control switching switch 22 is from the day being currently electrically connected
Line unit 1 is switched to be electrically connected with another antenna element 1.Briefly, index includes signal-to-noise ratio, and switching switch 22 exists
Signal-to-noise ratio (shows that signal strength is inadequate) when being lower than setting value and switches to another antenna element 1.It is corresponding, the switching switch 22
Select DPDT(Double Pole Double Throw, double-point double-throw switch), which believes for radio frequency
The selection of number transmission circuit, another part is for the selection to antenna element 1.
In other embodiments, three or more can also be set by antenna element 1.Likewise, switching switch 22 exists
Detect that control switches switch 22 by preset order to antenna when the index of the received radiofrequency signal of receiver meets switching condition
Unit 1 carries out switching one by one until being unsatisfactory for switching condition (showing that signal strength is enough).In general, using two antenna elements
1 just can satisfy most usage scenarios.
Pass through the antenna element for setting antenna element 1 to more than two, and cooperate switching 22 selective goal of switch up to standard
1, can be avoided radiofrequency signal that microwave transmission unit in carriage sends over due to ferris wheel brandreth reflection and supporting for being formed
Disappear, to further increase the stability and reliability of communication.
In above-described embodiment, baseband processing module 3 includes processor 31, analog-digital converter 32(ADC) and digital-to-analogue conversion
Device 33(DAC).Analog-digital converter 32 is electrically connected between the output end of receiver and processor 31, and digital analog converter 33 is electrically connected
Between the input terminal and processor 31 of transmitter.Switching switch 22 above-mentioned, which is actually usually electrically connected with processor 31, to be located
Manage the control of device 31, and previously for the detection of index such as signal-to-noise ratio be generally also through this process device 31 detect.At this
Reason device 31 can be CPU, MCU or FPGA, and present invention citing is realized using FPGA.
In above-described embodiment, when same microwave transmission unit uses more than two antenna elements 1, each antenna element 1 can
To use identical frequency.Antenna element 1 in different microwave transmission units is generally also corresponding using identical frequency.This
Outside, it is spaced apart with reality between each antenna element 1 when same microwave transmission unit uses more than two antenna elements 1
Now bigger radiation scope, to improve the reliability of communication.
In above-described embodiment, the frequency range citing of antenna element 1 can be between 2.4Ghz~5GHz, for example directlys adopt
2.4Ghz or 5GHz.Certainly, antenna element 1 can also select other frequencies.
In one embodiment, camera, loudspeaker and microphone, the camera, loudspeaking can be installed in carriage
Device and microphone are electrically connected with the baseband processing module 3 in the microwave transmission unit in carriage.And correspondingly, in control room
Display screen, loudspeaker and microphone be installed, display screen, loudspeaker and microphone and is controlled in indoor microwave transmission unit
Baseband processing module 3 is electrically connected.By the setting of above-mentioned module, it can be realized in control room and video prison is carried out to each carriage
Control, and it is able to carry out speech talkback.
In some embodiments, as accessing wirelessly in the microwave transmission unit and control room used in carriage as terminal
The microwave transmission unit hardware configuration that node uses is completely the same.In some embodiments, it is used in carriage as terminal micro-
Wave transmitting device and the interior microwave transmission unit hardware configuration used as wireless access node of control room are not quite identical, mainly
It is reflected in, for example the microwave transmission unit used in carriage as terminal can be only arranged to an antenna element 1, and will control
More than two antenna elements 1 are arranged in the indoor microwave transmission unit used as wireless access node.
In some embodiments, it exchanges, can also will be installed on as realized in order to increase the interactive of user between carriage
The microwave transmission unit of carriage used as terminal is configured to be in communication with each other.
By using above-mentioned microwave transmission system in ferris wheel, test shows:
(1) diameter of ferris wheel is up to 120m, and the communication distance of control room and carriage is up to 150m；
(2) microwave transmission unit and the indoor microwave transmission unit of control when number of elevator is 50 even more, in carriage
Between communication be also it is reliable and stable；
(3) microwave transmission unit in carriage is to controlling indoor microwave transmission unit real-time transmission video data and call voice
The upstream rate of data is not less than 1Mbps, and it is real-time to control microwave transmission unit of the indoor microwave transmission unit into carriage
The downstream rate for transmitting call voice data is not less than 20Kbps.
(4) microwave transmission unit in carriage can be realized to the voice communication controlled between indoor microwave transmission unit
Real-time perfoming, and video communication lag time is less than 0.2s.
Certainly, microwave transmission system disclosed in this invention can also be applied to other occasions, be not limited solely in skyscraping
It is carried out in wheel using for example available under the occasions such as vehicle scheduling being widely used.
The above is only embodiments of the present invention, are not intended to limit the scope of the invention, all to utilize the present invention
Equivalent structure or equivalent flow shift made by specification and accompanying drawing content is applied directly or indirectly in other relevant technologies
Field is included within the scope of the present invention.
Claims (10)
1. a kind of microwave transmission unit characterized by comprising
At least one antenna element, for receiving or sending radiofrequency signal；
Radio-frequency receiving-transmitting processing module has the transmitter for receiving the receiver of radiofrequency signal and for emitting radiofrequency signal,
And the output end of the input terminal of the receiver and the transmitter is switchably connected with the antenna element；
And baseband processing module, the input terminal of the baseband processing module are electrically connected with the output end of the receiver, export
End is electrically connected with the input terminal of the transmitter, is penetrated for being demodulated and being modulated the received radiofrequency signal of the receiver
Frequency signal emits for the transmitter.
2. microwave transmission unit according to claim 1, it is characterised in that:
The radio-frequency receiving-transmitting processing module include the rf chip being electrically connected with the baseband processing module and respectively with
The switching switch of the antenna element and baseband processing module electrical connection, the rf chip is interior to have the reception
Machine and the transmitter, switching switch under the control of the baseband processing module selectively with the receiver or institute
It states transmitting mechatronics and then realizes transmitting-receiving switching.
3. microwave transmission unit according to claim 2, it is characterised in that:
The radio-frequency receiving-transmitting processing module include the low-noise amplifier being electrically connected with the input terminal of the receiver and with institute
The power amplifier of the output end electrical connection of transmitter is stated, the switching switch selects under the control of the baseband processing module
It is electrically connected with the low-noise amplifier or the power amplifier to property.
4. microwave transmission unit according to claim 2, it is characterised in that:
The antenna element is set as more than two, and the switching switchs under the control of the baseband processing module selectively
The receiver or the transmitter are electrically connected with antenna element described in one of them.
5. microwave transmission unit according to claim 4, it is characterised in that:
Baseband processing module control when the index for detecting the received radiofrequency signal of the receiver meets switching condition
The switching switch is switched to from the antenna element being currently electrically connected to be electrically connected directly with antenna element described in another
To being unsatisfactory for switching condition；
The index includes signal-to-noise ratio, and the switching switch switches to another antenna list when signal-to-noise ratio is lower than setting value
Member.
6. microwave transmission unit according to claim 1, it is characterised in that:
The baseband processing module includes processor, analog-digital converter and digital analog converter, the analog-digital converter electrical connection
Between the output end and the processor of the receiver, the digital analog converter is electrically connected to the input terminal of the transmitter
Between the processor；
The processor is FPGA.
7. microwave transmission unit according to claim 1, it is characterised in that:
The microwave transmission unit is configured as carrying out uplink and downlink communication based on TDD agreement and TDMA agreement.
8. a kind of microwave transmission system, which is characterized in that including more than two microwaves as described in any one of claims 1 to 7
Transmitting device；Wherein a microwave transmission unit is configured as wireless access node, remaining described microwave transmission unit is matched
It is set to terminal；It is configured as being configured as between the microwave transmission unit of terminal not communicating mutually, is configured as the institute of terminal
It states and is configured as two-way communication between microwave transmission unit and the microwave transmission unit for being configured as wireless access node.
9. a kind of ferris wheel, which is characterized in that including a control room, more than one carriage and as claimed in claim 8
Microwave transmission system；
The microwave transmission unit for being configured as wireless access node is installed on the control room, is configured as the microwave transmission of terminal
Device correspondence is installed on the carriage.
10. ferris wheel according to claim 9, it is characterised in that:
Camera, loudspeaker and microphone be installed in the carriage, the camera, the loudspeaker and the microphone with
Baseband processing module electrical connection in microwave transmission unit in the carriage；
Correspondingly, display screen, loudspeaker and microphone, the display screen, the loudspeaker and institute are installed in the control room
Microphone is stated to be electrically connected with the baseband processing module in the indoor microwave transmission unit of control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811107728.9A CN109039371A (en) | 2018-09-21 | 2018-09-21 | Ferris wheel and its microwave transmission system, microwave transmission unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811107728.9A CN109039371A (en) | 2018-09-21 | 2018-09-21 | Ferris wheel and its microwave transmission system, microwave transmission unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109039371A true CN109039371A (en) | 2018-12-18 |
Family
ID=64617498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811107728.9A Pending CN109039371A (en) | 2018-09-21 | 2018-09-21 | Ferris wheel and its microwave transmission system, microwave transmission unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN109039371A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115605814A (en) * | 2020-05-19 | 2023-01-13 | 三菱电机株式会社（Jp） | Additional foundation unit, control device, control system and control method |
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| CN1567742A (en) * | 2003-06-25 | 2005-01-19 | 大紘科技股份有限公司 | Multi-antenna control device of analog radio communication |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115605814A (en) * | 2020-05-19 | 2023-01-13 | 三菱电机株式会社（Jp） | Additional foundation unit, control device, control system and control method |
| US11782857B2 (en) | 2020-05-19 | 2023-10-10 | Mitsubishi Electric Corporation | Expansion base unit, control device, control system, and control method |
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