CN110027954A - A kind of elevator shaft communication device of changeable route - Google Patents
A kind of elevator shaft communication device of changeable route Download PDFInfo
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- CN110027954A CN110027954A CN201910313616.7A CN201910313616A CN110027954A CN 110027954 A CN110027954 A CN 110027954A CN 201910313616 A CN201910313616 A CN 201910313616A CN 110027954 A CN110027954 A CN 110027954A
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- 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
- B66B5/0006—Monitoring devices or performance analysers
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- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The invention discloses a kind of elevator shaft communication devices of changeable route, including wire communication module, each elevator shaft communication terminal are connected to by the communications cable, for carrying out wired data communication；Wireless communication module is wirelessly connected to each elevator shaft communication terminal, for carrying out wireless data communication；Monitor switching module, it is respectively connected to the wire communication module and wireless communication module, for monitoring the communication quality parameter of the wire communication module and the wireless communication module, and according to preset communication switching law, one of communication module is selected to carry out the data communication between each elevator shaft communication terminal.Beneficial effects of the present invention are, it combines wire communication and wirelessly communicates respective transmission advantage, pass through collaborative work, make up respective disadvantage, switch communication means in time using monitoring switching module simultaneously, the advantages of being effectively utilized two kinds of communication modes, environmental suitability is stronger, substantially increases the stability and reliability of elevator shaft communication.
Description
Technical field
The invention belongs to elevator communication fields, and in particular to a kind of elevator shaft communication device of changeable route.
Background technique
Digitlization, networking, intelligence are futurity industry and the inexorable trend that industrial application field is developed, elevator Internet of Things
One of most potential field of elevator industry is had become, is attracting more and more Internet of Things enterprises and elevator industry huge
Head is joined among this strand of tide.As elevator industry and merging for technology of Internet of things are more and more mature, elevator Internet of Things is supported
Technology will become the standard configuration of the following elevator.
Elevator belongs to special equipment, due to the particularity of its application field, to the reliability and safety of the transmission of its data
Requirement it is all very high, therefore establishing a safe and reliable communication channel is first and to have to solve the problems, such as.But due to electricity
The special application environment in stair shaft road, the connected network communication of the elevator shafts communication terminal such as elevator car top and carriage end equipment due to
Lower reason is always a technical problem:
(1) signal interference is serious: the various cables such as power, illumination, control, communication in elevator can all generate electromagnetism spoke
It penetrates, and electromagnetic radiation type, intensity, characteristic and period are all different.Meanwhile elevator trailing cable is generally free of shielded layer, it is interior
The various cables in portion are arranged closely together, and the cross talk effects between each cable are also very serious, to understand interference type and
Rule it is extremely difficult, how it is anti-interference be even more a problem；
(2) transmission cable is easy to damage: since elevator continually moves up and down so that at present commonly use coaxial cable, optical fiber or
Service life of the digital signal transmission lines cable such as person's cable on elevator all substantially reduces.Even if at special stretch-proof
Reason, often some months or half a year will be replaced, so that the cost of implementation and the maintenance of cable cost and engineering is high；
There are three types of existing digital communication modes:
(1) fiber optic communication or cable communication
Both modes need to construct wiring, and optical fiber easily snaps off, and network cable transmission apart from restricted, support by maximum
100 meters；
(2) wireless WIFI bridge
Wireless WIFI does not need to be routed, construction is simple, but WIFI, using public frequency band, site environment is easy by dry
It disturbs, stability is not high；
(3) power line carrier communication scheme
Have retinue cable without being routed using elevator, but site environment, between the running noises and cable of elevator
Crosstalk couplings can affect to the performance of carrier telecommunication.
Therefore, the existing technology communicated using single digital communication method is applying the end in elevator shaft
When the communication of end, each there is limitation, it is difficult to reach good communication efficiency.
Summary of the invention
To solve the above-mentioned problems, the present invention is achieved by following technical scheme:
A kind of elevator shaft communication device of changeable route, including
Wire communication module is connected to each elevator shaft communication terminal by the communications cable, logical for carrying out cable data
Letter；
Wireless communication module is wirelessly connected to each elevator shaft communication terminal, for carrying out wireless data communication；
Switching module is monitored, the wire communication module and wireless communication module are respectively connected to, described is had for monitoring
The communication quality parameter of line communication module and the wireless communication module, and according to preset communication switching law, selection is wherein
One communication module carries out the data communication between each elevator shaft communication terminal.
Compared with the existing technology, the invention has the benefit that
The invention discloses a kind of elevator shaft communication devices of changeable route, in conjunction with wire communication and wireless communication
Respective transmission advantage makes up respective disadvantage, while switching communication party in time using monitoring switching module by cooperating
Method, the advantages of being effectively utilized two kinds of communication modes, environmental suitability is stronger, can greatly improve the stabilization of elevator shaft communication
Property and reliability.
Further, the monitoring switching module includes:
Wire communication monitoring unit, for obtaining the wire communication snr value of the wire communication module；
Monitoring unit is wirelessly communicated, for obtaining the wireless communication snr value of the wireless communication module；
Selecting unit is communicated, for selecting one of communication module to carry out data according to preset communication switching law
Communication.
Obtained by snr value of the monitoring unit to wire communication and wireless communication, can with timely learning both
The communication stability and reliability of communication, while the two is switched over according to snr value in real time using communication selecting unit,
It can achieve flexible transition effect, to guarantee the reliability and stability of communication.
Further, the communications cable is power line, and the wired data communication is broadband power line communication, described to have
Line Communication Monitoring Unit is communicated by Ethernet interface with the wire communication module, read by ICP/IP protocol described in
Wire communication snr value uses power line as wired communication mode, can use elevator and has retinue cable without wiring,
It is convenient to facilitate.
Further, the wire communication snr value is the average value of the snr value of multi collect in a period of time,
The wireless communication snr value is the average value of the snr value of multi collect in a period of time, using being averaged for snr value
Value can more fully reflect the communication quality situation of communication module whithin a period of time.
Further, the wireless communication module is WIFI communication module, and the wireless communication monitoring unit is wirelessly connected
To the wireless communication module, the wireless communication snr value is obtained by signal-to-noise ratio inspection software, uses WIFI communication party
Formula has many advantages, such as that wide coverage, transmission rate are high as communication.
Further, the communication switching law are as follows: preferentially select the wire communication module to carry out data communication, examining
When surveying the wire communication snr value lower than preset snr threshold, it is logical to switch to the wireless communication module progress data
Letter.Specifically, snr threshold can be adjusted by operator according to historical empirical data or actual conditions.
Above-mentioned communication switching law preferentially selects wired communication mode, is because wired communication mode has more stable lead to
Letter feature, when communication issue occurs in wired communication mode, the more secondary communication of reselection stability is communicated, from
And the advantages of the two can be combined more scientificly, it maximizes favourable factors and minimizes unfavourable ones, reaches better communication efficiency.
Further, the communication selecting unit executes following steps, to realize the selection of the communication module:
S1, judge whether wire communication snr value is in good wire signal section:
If so, selection wire communication module carries out data communication；
Otherwise, judge to wirelessly communicate whether snr value is in good wireless signal interval:
If so, selection wireless communication module carries out data communication；
Otherwise, into next step；
S2, judge whether wire communication snr value is in general wire signal section:
If so, selection wire communication module carries out data communication；
Otherwise, judge to wirelessly communicate whether snr value is in general wireless signal interval:
If so, selection wireless communication module carries out data communication；
Otherwise, into next step；
S3, judge whether wire communication snr value is in poor wire signal section:
If so, selection wire communication module carries out data communication；
Otherwise, judge to wirelessly communicate whether snr value is in poor wireless signal interval:
If so, selection wireless communication module carries out data communication；
Otherwise, into next step；
S4, judge whether wire communication snr value is in bad wire signal section:
If so, selection wire communication module carries out data communication；
Otherwise, judge to wirelessly communicate whether snr value is in bad wireless signal interval:
If so, selection wireless communication module carries out data communication；
Otherwise, selection wire communication module carries out data communication.
Further, the good wire signal section are as follows: wire communication snr value >=20；The general wire signal
Section are as follows: 10≤wire communication snr value < 20；The poor wire signal section are as follows: 5≤wire communication snr value < 10；
The bad wire signal section are as follows: wire communication snr value < 5；
The good wireless signal interval are as follows: wireless communication snr value >=30；The general wireless signal interval are as follows:-
20≤wireless communication snr value < 30；The poor wireless signal interval are as follows: -30≤wireless communication snr value < -20；It is described
Bad wireless signal interval are as follows: wireless communication snr value < -30.
It, can be more comprehensively and scientifically in conjunction with wire communication and wirelessly by the selection step of communication module disclosed above
The communication feature of communication carries out the selection of communication mode according to the threshold interval of signal-to-noise ratio, so as to combine two more scientificly
The advantages of person, maximizes favourable factors and minimizes unfavourable ones, and reaches better communication efficiency.
Further, the monitoring switching module further includes wireless channel monitoring unit, for the radio communication mold
The multiple channels of block are monitored, and obtain free message and the power spectral density information of each channel.
Further, the communication selecting unit is when selecting the wireless communication module to carry out data communication, according to institute
Free message and the power spectral density information for stating each channel select one of letter according to preset wireless channel switching law
Road carries out wireless communication.
Further, the wireless channel switching law are as follows:
Judge whether there is idle channel:
If it exists, any idle channel is selected to carry out wireless communication；The idle channel is the letter of no client access
Road；
If it does not exist, each channel is ranked up from small to large according to power spectral density information, is selected in first three channel,
The minimum channel of the online quantity of wireless client carries out wireless communication.
Wireless channel monitoring unit and wireless channel switching law disclosed above, the communication of reasonable consideration wireless communication
Feature, so that the channel resource in wireless communication is available more abundant and more reasonably utilizes, to make wireless communication performance
Best communication efficiency.
Detailed description of the invention
Fig. 1 is the functional block diagram of elevator shaft communication device described in embodiment 1 in the present invention；
Fig. 2 is the channel schematic diagram of the wireless network of 2.4GHz described in embodiment 1 in the present invention；
Fig. 3 is the step schematic diagram for communicating switching law in the present invention described in embodiment 1.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment 1
As shown in Figure 1, present embodiment discloses a kind of elevator shaft communication devices of changeable route, including
Wire communication module 1 is connected to each elevator shaft communication terminal by power line, logical for carrying out broadband over power line
Letter；
Wireless communication module 2 is wirelessly connected to each elevator shaft communication terminal, for carrying out WIFI data communication；
Switching module 3 is monitored, wire communication module and wireless communication module are respectively connected to, for monitoring wire communication mould
The communication quality parameter of block and wireless communication module, and according to preset communication switching law, select one of communication module
The data communication between each elevator shaft communication terminal is carried out, is arranged in this way, the present apparatus uses power line as wire communication
Mode can use elevator and have retinue cable without wiring, and it is convenient to facilitate, while using WIFI communication mode as channel radio
Letter mode has many advantages, such as wide coverage, and transmission rate is high, combines wire communication and the respective transmission of wireless communication is excellent
Gesture makes up respective disadvantage, while switching communication means, effective use in time using monitoring switching module 3 by cooperating
The advantages of two kinds of communication modes, environmental suitability is stronger, can greatly improve the stability and reliability of elevator shaft communication.
Specifically, monitoring switching module 3 includes:
Wire communication monitoring unit 31, for obtaining the wire communication snr value of wire communication module 1；Specifically, having
Line Communication Monitoring Unit 31 is communicated by Ethernet interface with wire communication module 1, is read by ICP/IP protocol wired
Communicate snr value；
Monitoring unit 32 is wirelessly communicated, for obtaining the wireless communication snr value of wireless communication module 2；Specifically, nothing
Line Communication Monitoring Unit 32 is wirelessly connected to wireless communication module 2, obtains wireless communication signal-to-noise ratio by signal-to-noise ratio inspection software
Value.
Wireless channel monitoring unit 33 is monitored for multiple channels to wireless communication module 2, obtains each channel
Free message and power spectral density information；
Selecting unit 34 is communicated, for selecting one of communication module to be counted according to preset communication switching law
According to communication.
By above-mentioned monitoring switching module 3, the signal-to-noise ratio of two monitoring unit 31 and 32 pair wire communications and wireless communication
Value is obtained, can be with the communication stability and reliability of both communications of timely learning, while utilizing communication selecting unit 34
The two is switched over according to snr value in real time, can achieve flexible transition effect, thus guarantee communication reliability and
Stability.
Specifically, selecting unit 34 is communicated when selecting wireless communication module to carry out data communication, according to the sky of each channel
Not busy information and power spectral density information select one of channel to carry out channel radio according to preset wireless channel switching law
Letter, the communication feature of reasonable consideration wireless communication are more closed sufficiently and more so that channel resource in wireless communication is available
The utilization of reason, so that wireless communication be made to play best communication efficiency.
Specifically, as shown in Fig. 2, the frequency range of work is 2.400-by taking the wireless network of 2.4GHz as an example
2.4835GHz, one, which shares 14 channels, can be used, and every sub-channels bandwidth is 22MHz；The center frequency point interval of adjacent channel
5MHz,.
Wireless channel monitoring unit detects 14 channels automatically, if there are idle channels, if so, random selection one
Channel is as communication channel；If 14 channels are not all idle channels, there is client access, at this moment reads each letter
Road power spectral density, the channel for selecting power spectrum minimum, power spectral density low channel second from the bottom and power spectral density are reciprocal
Then the low channel of third selects wireless client in the minimum channel of line number as WiFi network circuit in these three channels
Communication channel.
Specifically, wire communication monitoring unit and wireless communication monitoring unit when obtaining snr value, for a period of time
Interior multiple acquisition snr value, and average signal-to-noise ratio value is calculated using following formula:
Wherein, E [SNR] is average signal-to-noise ratio value, and n is the number obtained in a period of time, SNRiThe letter obtained for i-th
It makes an uproar ratio.The average value of snr value is obtained by calculation, can more fully reflect communication module whithin a period of time
Communication quality situation.
It is preferential, the characteristics of according to wire communication and wirelessly communicating respective communication snr value, by wire communication module
Four sections are respectively divided into the communication snr value of wireless communication module, to represent the communication quality degree of two kinds of communication,
Wherein, four sections of wire communication are respectively as follows:
Good wire signal section are as follows: wire communication snr value >=20；General wire signal section are as follows: 10≤cable modem
Believe snr value < 20；Poor wire signal section are as follows: 5≤wire communication snr value < 10；Bad wire signal section are as follows: have
Line communicates snr value < 5；
Wherein, four sections of wireless communication are respectively as follows: good wireless signal interval are as follows: and wireless communication snr value >=
30；General wireless signal interval are as follows: -20≤wireless communication snr value < 30；Poor wireless signal interval are as follows: -30≤channel radio
Believe snr value < -20；Bad wireless signal interval are as follows: wireless communication snr value < -30.
As shown in figure 3, communication selecting unit executes following steps, according to above-mentioned interval division to realize communication module
Selection:
S1, judge whether wire communication snr value is in good wire signal section:
If so, selection wire communication module carries out data communication；
Otherwise, judge to wirelessly communicate whether snr value is in good wireless signal interval:
If so, selection wireless communication module carries out data communication；
Otherwise, into next step；
S2, judge whether wire communication snr value is in general wire signal section:
If so, selection wire communication module carries out data communication；
Otherwise, judge to wirelessly communicate whether snr value is in general wireless signal interval:
If so, selection wireless communication module carries out data communication；
Otherwise, into next step；
S3, judge whether wire communication snr value is in poor wire signal section:
If so, selection wire communication module carries out data communication；
Otherwise, judge to wirelessly communicate whether snr value is in poor wireless signal interval:
If so, selection wireless communication module carries out data communication；
Otherwise, into next step；
S4, judge whether wire communication snr value is in bad wire signal section:
If so, selection wire communication module carries out data communication；
Otherwise, judge to wirelessly communicate whether snr value is in bad wireless signal interval:
If so, selection wireless communication module carries out data communication；
Otherwise, selection wire communication module carries out data communication.
It, can be more comprehensively and scientifically in conjunction with wire communication and wirelessly by the selection step of communication module disclosed above
The communication feature of communication carries out the selection of communication mode according to the threshold interval of signal-to-noise ratio, so as to combine two more scientificly
The advantages of person, maximizes favourable factors and minimizes unfavourable ones, and reaches better communication efficiency.
Embodiment 2
It is similar to communication device disclosed in embodiment 1 present embodiment discloses a kind of elevator shaft communication device,
The difference is that communication switching law are as follows: preferential selection wire communication module carries out data communication, in detection wire communication
When snr value is lower than preset snr threshold, switches to wireless communication module and carry out data communication, wherein snr threshold
It can be 10, or be adjusted by operator according to historical empirical data or actual conditions.
By above-mentioned communication switching law, communication device preferentially selects wired communication mode, is because of wired communication mode
Have the characteristics that more stable communication, when there is communication issue in wired communication mode, the more secondary wireless communication of reselection stability
Mode is communicated, so as in conjunction with the advantages of the two, maximize favourable factors and minimize unfavourable ones more scientificly, reach better communication efficiency.
More than, it is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, thus it is all
Without departing from technical solution of the present invention content, any modification to the above embodiments, equivalent according to the technical essence of the invention
Variation and modification, still fall within technical solution of the present invention.
Claims (10)
1. a kind of elevator shaft communication device of changeable route, which is characterized in that including
Wire communication module is connected to each elevator shaft communication terminal by the communications cable, for carrying out wired data communication；
Wireless communication module is wirelessly connected to each elevator shaft communication terminal, for carrying out wireless data communication；
Switching module is monitored, the wire communication module and wireless communication module are respectively connected to, for monitoring the cable modem
Believe the communication quality parameter of module and the wireless communication module, and according to preset communication switching law, selects one of them
Communication module carries out the data communication between each elevator shaft communication terminal.
2. the elevator shaft communication device of changeable route according to claim 1, which is characterized in that the monitoring switching
Module includes:
Wire communication monitoring unit, for obtaining the wire communication snr value of the wire communication module；
Monitoring unit is wirelessly communicated, for obtaining the wireless communication snr value of the wireless communication module；
Selecting unit is communicated, for selecting one of communication module to carry out data communication according to preset communication switching law.
3. the elevator shaft communication device of changeable route according to claim 2, which is characterized in that the communications cable
For power line, the wired data communication is broadband power line communication, and the wire communication snr value is more in a period of time
The average value of the snr value of secondary acquisition.
4. the elevator shaft communication device of changeable route according to claim 2, which is characterized in that the wireless communication
Module is WIFI communication module, and the wireless communication snr value is that the snr value of multi collect in a period of time is averaged
Value.
5. the elevator shaft communication device of changeable route according to claim 2, which is characterized in that the communication switching
Rule are as follows: preferentially select the wire communication module to carry out data communication, detecting the wire communication snr value lower than pre-
If snr threshold when, switch to the wireless communication module and carry out data communication.
6. the elevator shaft communication device of changeable route according to claim 2, which is characterized in that the communication selection
Unit executes following steps, to realize the selection of the communication module:
S1, judge whether wire communication snr value is in good wire signal section:
If so, selection wire communication module carries out data communication；
Otherwise, judge to wirelessly communicate whether snr value is in good wireless signal interval:
If so, selection wireless communication module carries out data communication；
Otherwise, into next step；
S2, judge whether wire communication snr value is in general wire signal section:
If so, selection wire communication module carries out data communication；
Otherwise, judge to wirelessly communicate whether snr value is in general wireless signal interval:
If so, selection wireless communication module carries out data communication；
Otherwise, into next step；
S3, judge whether wire communication snr value is in poor wire signal section:
If so, selection wire communication module carries out data communication；
Otherwise, judge to wirelessly communicate whether snr value is in poor wireless signal interval:
If so, selection wireless communication module carries out data communication；
Otherwise, into next step；
S4, judge whether wire communication snr value is in bad wire signal section:
If so, selection wire communication module carries out data communication；
Otherwise, judge to wirelessly communicate whether snr value is in bad wireless signal interval:
If so, selection wireless communication module carries out data communication；
Otherwise, selection wire communication module carries out data communication.
7. the elevator shaft communication device of changeable route according to claim 6, which is characterized in that described good wired
Signal spacing are as follows: wire communication snr value >=20；The general wire signal section are as follows: 10≤wire communication snr value <
20；The poor wire signal section are as follows: 5≤wire communication snr value < 10；The bad wire signal section are as follows: wired
Communicate snr value < 5；
The good wireless signal interval are as follows: wireless communication snr value >=30；The general wireless signal interval are as follows: -20≤
Wirelessly communicate snr value < 30；The poor wireless signal interval are as follows: -30≤wireless communication snr value < -20；It is described bad
Wireless signal interval are as follows: wireless communication snr value < -30.
8. the elevator shaft communication device of changeable route according to claim 2, which is characterized in that the monitoring switching
Module further includes wireless channel monitoring unit, for being monitored to the multiple channels of the wireless communication module, obtains each channel
Free message and power spectral density information.
9. the elevator shaft communication device of changeable route according to claim 8, which is characterized in that the communication selection
Unit is when selecting the wireless communication module to carry out data communication, according to the free message of each channel and power spectral density
Information selects one of channel to carry out wireless communication according to preset wireless channel switching law.
10. the elevator shaft communication device of changeable route according to claim 9, which is characterized in that the wireless communication
Road switching law are as follows:
Judge whether there is idle channel:
If it exists, any idle channel is selected to carry out wireless communication；The idle channel is the channel of no client access；
If it does not exist, each channel is ranked up from small to large according to power spectral density information, is selected in first three channel, wirelessly
The minimum channel of the online quantity of client carries out wireless communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910313616.7A CN110027954B (en) | 2019-04-18 | 2019-04-18 | Elevator well communication device of changeable circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910313616.7A CN110027954B (en) | 2019-04-18 | 2019-04-18 | Elevator well communication device of changeable circuit |
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| CN110027954A true CN110027954A (en) | 2019-07-19 |
| CN110027954B CN110027954B (en) | 2020-09-01 |
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| CN114132819A (en) * | 2020-09-03 | 2022-03-04 | 株式会社日立制作所 | Mobile radio control system and mobile radio control method |
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| Publication number | Publication date |
|---|---|
| CN110027954B (en) | 2020-09-01 |
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