CN106656268A - Monitoring device utilizing power line carrier technology and monitoring method thereof - Google Patents
Monitoring device utilizing power line carrier technology and monitoring method thereof Download PDFInfo
- Publication number
- CN106656268A CN106656268A CN201710147888.5A CN201710147888A CN106656268A CN 106656268 A CN106656268 A CN 106656268A CN 201710147888 A CN201710147888 A CN 201710147888A CN 106656268 A CN106656268 A CN 106656268A
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- Prior art keywords
- node
- data
- power line
- token
- monitoring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/546—Combination of signalling, telemetering, protection
Abstract
The invention discloses a monitoring device utilizing a power line carrier technology and a monitoring method thereof. The monitoring device utilizing the power line carrier technology and the monitoring method thereof are used for solving the problems of high wiring difficulty, maintaining difficulty and transmission rate limitation of a traditional field bus device monitoring system in a closed space application background. According to the method, a traditional token bus network technology is innovated, the improved token bus technology is applied to the power line carrier technology, a self-organization of a token LAN is carried out by a modem on a bus after the system is electrified, and an equal network access service is provided for each node. According to the monitoring device utilizing the power line carrier technology and the monitoring method thereof, the problem that a network time delay is unpredictable when CSMA/CA is used for processing a channel access mechanism in the traditional power line carrier technology is solved, high reliability and high communication rate are achieved, and requirements of device monitoring for data transmission reliability are satisfied. According to the invention, many-to-one device monitoring is realized through the power line carrier technology.
Description
Technical field
The invention belongs to communication technical field, and in particular to a kind of monitoring device and its prison of utilization power line carrier technology
Prosecutor method.
Background technology
The monitoring system of communication equipment is significant for the reliable communication link of guarantee.From the eighties in 20th century
Rise, fieldbus because its is highly reliable/communication is quick, compatibility is wide etc., and a series of advantages are able to extensively in industrial automatic control
General application.At present various monitoring of tools management systems and field bus device species are various, can meet the needs of every profession and trade.But
In the application scenarios of some limited spaces, field bus technique there is also that wiring difficulty is high, transfer rate is limited, not easy care
Problem.
Power line carrier technology refers to by the use of existing power distribution network as transmission medium, carries out a kind of of carrier-wave transmission and communicate
Mode, the technology is coupled to signal of communication on power line by termination power, realizes that data transfer and information are exchanged.Power line
Carrier communication carries out data transmission by power line, it is not necessary to rewiring, obtains in family online and Internet of Things field
It is widely applied.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, it is an object of the invention to provide a kind of utilization power line carrier technology
Monitoring device and its monitoring method, without the need for rewiring, you can effectively complete monitoring of tools management.
To achieve these goals, the technical solution used in the present invention is：
A kind of monitoring device of utilization power line carrier technology, including host node, modem, from node, a Supervision
Control system contains a host node and multiple from node, and main and subordinate node, modem constitute monobus by power line channel
Type topological structure, host node is system monitoring base station, receives and comes since the monitoring data of node, and modem is used to complete prison
The modulation of control data, demodulation coupling, for main and subordinate node communication path is provided；It is monitored device from node, according to regulation
Monitoring data is sent to host node by bus access mechanism, and power line provides passage for data transfer, at the same for main and subordinate node and
Modem provides power supply；
Described host node and communicated using UART or usb communication mode from node and modem interface；
Described modem mainly includes modulation /demodulation module, AD/DA modules, Coupler Module, wherein modulatedemodulate mode transfer
Block encodes to avoid the single-frequency point impulse disturbances in power line channel using RS codings to node data, then adopts
Data-signal is modulated with the PSK modulation demodulation systems using Phase Continuation, it is ensured that reduce spread spectrum and interference, then
The signal for modulating is sent to power line channel by A/D module, Coupler Module, the modulation being connected with host node in the same manner
The flow processs such as reception, demodulation, the decoding of the complete pair signals of demodulator, by monitoring data host node is sent to.
A kind of method that utilization power line carrier technology realizes monitoring of tools, its monitoring method includes physical layer design sum
According to link layer channel access mechanism design, wherein physical layer mainly realize data modulation demodulation system it is related to signal transacting
Content, for data link layer communication bottom access service and interface are provided；Data link layer main inventive is a set of based on improvement
Token bus multiple access communication communication plan, comprise the following steps：
1st, transmitting data in physical layer process is as follows：
1）Monitoring data is sent to by modem by UART or USB modes from node；
2）Monitoring data is carried out framing by modem, then Jing RS codings, the PSK modulation of continuous phase, DA conversion, signal
Coupling, then sends the signal on power line channel；
3）Host node perceives the analog signal on power line by coupler, then Jing AD conversion, PSK demodulation, RS decodings, from frame
Middle acquisition comes since the data of node；
4）Host node sends data ibid to from node；
2nd, data link layer is based on improved token bus multiple access：
1）After system electrification, the modem in bus carries out MANET by power line, and each node has after networking
Standby unique logical address.Each from node have before after address and successor address, and host node address；
2）When network idle, only available free token does not arrhea dynamic on loop；
4）When data are wanted to send in a station, it is necessary to intercept and capture idle token；
3）After system electrification, initial idle token is sent by host node, and traversal is all from after node, is passed from node by last
Pass host node；
5）If through token its bit be 1, be not idle token, can only bear with；
6）If through token its bit be 0, at this moment, token bit is set to 1 by dispatching station, and number will be sent needed for this node
Send to host node according to information such as length, host node is received after this information, to this from node response, and bus access power is authorized
This is received data assembling to be sent after host node mandate into Frame from node from node, sends data to host node, should be from
Node can be continuously sent till no data can be sent out；
7）Send after the completion of data from node, to host node release token request is sent, concede bus access power.Treat that host node should
After answering, idle token is sent to next from node；
8）After the completion of all node transmission data in loop, idle token is sent to host node, host node is obtained after token,
Can access from node.If without the need for accessing from node, No. 1 can be passed token to from node, continue above-mentioned conveying flow.
Description of the drawings
Fig. 1 power line devices monitor monobus topological diagram；
Fig. 2 modem physical layer flow chart of data processing；
Conveying flow of Fig. 3 tokens in bus.
Specific embodiment
Invention is further discussed below below in conjunction with accompanying drawing.
As shown in figure 1, a kind of method that utilization power line carrier technology realizes monitoring of tools, it is characterised in that hardware is put down
Platform is including host node, modem, from node, and an equipment monitoring system contains a host node and multiple from node, main
Monobus type topological structure is constituted by power line channel from node, modem, host node is system monitoring base station, is received
Carry out the monitoring data since node；Modem is used to complete the modulation of monitoring data, demodulation coupling, is that main and subordinate node leads to
Letter provides path；It is monitored device from node, monitoring data is sent into host node according to the bus access mechanism of regulation, electricity
The line of force provides passage for data transfer, while being that main and subordinate node and modem provide power supply, its monitoring method includes following
Step：
As shown in Fig. 2 Point-to-Point Data Transmission process is as follows：
1）Monitoring data is sent to by modem by UART or USB modes from node；
2）Monitoring data is carried out framing by modem, then Jing RS codings, the PSK modulation of continuous phase, DA conversion, signal
Coupling, then sends the signal on power line channel；
3）Host node perceives the analog signal on power line by coupler, then Jing AD conversion, PSK demodulation, RS decodings, from frame
Middle acquisition comes since the data of node；
4）Host node sends data ibid to from node；
As shown in figure 3, the present invention employs follow-on token bus technical side when multiple nodes sharing communication channels are processed
Case, for the network access service that each node provides equality, reliability is high, and traffic rate is high, it may be determined that network performance, it is ensured that
Demand of the monitoring of tools for propagation delay time.Specific embodiment is as follows：
1）After system electrification, the modem in bus carries out MANET by power line, and each node has after networking
Standby unique logical address.Each node have before after address and successor address, and host node address.
2）When network idle, only available free token does not arrhea dynamic on loop.
3）After system electrification, initial idle token is sent by host node, and traversal is all from after node, by last from section
Point passes to host node.
4）When data are wanted to send in a station, it is necessary to intercept and capture idle token.
5）If through token its bit be 1, be not idle token, can only bear with.
6）If through token its bit be 0, at this moment, token bit is set to 1 by dispatching station, and by data group to be sent
Frame is dressed up, host node is sent data to.The station can continuously send until no data can be sent out or to token keep count
When device meter it is full till.
7）The station is sent after the completion of data, discharges token, and idle token is sent to next node.
8）After the completion of all node transmission data in loop, idle token is sent to host node, host node is made
Bridge queen, can access from node.If without the need for accessing from node, No. 1 can be passed token to from node, continue above-mentioned transmission
Flow process.
9）From not carrying out data frame transfer between node.
Claims (2)
1. a kind of monitoring device of utilization power line carrier technology, including host node, modem, from node, its feature exists
In an equipment monitoring system contains a host node and multiple from node, and main and subordinate node, modem are believed by power line
Road constitutes monobus type topological structure, and host node is system monitoring base station, receives and comes since the monitoring data of node, modulation /demodulation
Device is used to complete the modulation of monitoring data, demodulation coupling, and for main and subordinate node communication path is provided；Set for monitored from node
It is standby, monitoring data is sent into host node according to the bus access mechanism of regulation, power line provides passage for data transfer, while
It is that main and subordinate node and modem provide power supply；
Described host node and communicated using UART or usb communication mode from node and modem interface；
Described modem mainly includes modulation /demodulation module, AD/DA modules, Coupler Module, wherein modulatedemodulate mode transfer
Block encodes to avoid the single-frequency point impulse disturbances in power line channel using RS codings to node data, then adopts
Data-signal is modulated with the PSK modulation demodulation systems using Phase Continuation, it is ensured that reduce spread spectrum and interference, then
The signal for modulating is sent to power line channel by A/D module, Coupler Module, the modulation being connected with host node in the same manner
The flow processs such as reception, demodulation, the decoding of the complete pair signals of demodulator, by monitoring data host node is sent to.
2. a kind of method that utilization power line carrier technology realizes monitoring of tools, its monitoring method includes physical layer design and data
The design of link layer channel access mechanism, wherein physical layer mainly realize the modulation demodulation system and signal transacting of data mutually inside the Pass
Hold, for data link layer communication bottom access service and interface are provided；Data link layer main inventive is a set of based on improved
The multiple access communication communication plan of token bus, comprises the following steps：
1st, transmitting data in physical layer process is as follows：
1）Monitoring data is sent to by modem by UART or USB modes from node；
2）Monitoring data is carried out framing by modem, then Jing RS codings, the PSK modulation of continuous phase, DA conversion, signal
Coupling, then sends the signal on power line channel；
3）Host node perceives the analog signal on power line by coupler, then Jing AD conversion, PSK demodulation, RS decodings, from frame
Middle acquisition comes since the data of node；
4）Host node sends data ibid to from node；
2nd, data link layer is based on improved token bus multiple access：
1）After system electrification, the modem in bus carries out MANET by power line, and each node has after networking
Standby unique logical address；
Each from node have before after address and successor address, and host node address；
2）When network idle, only available free token does not arrhea dynamic on loop；
4）When data are wanted to send in a station, it is necessary to intercept and capture idle token；
3）After system electrification, initial idle token is sent by host node, and traversal is all from after node, is passed from node by last
Pass host node；
5）If through token its bit be 1, be not idle token, can only bear with；
6）If through token its bit be 0, at this moment, token bit is set to 1 by dispatching station, and number will be sent needed for this node
Send to host node according to information such as length, host node is received after this information, to this from node response, and bus access power is authorized
This is received data assembling to be sent after host node mandate into Frame from node from node, sends data to host node, should be from
Node can be continuously sent till no data can be sent out；
7）Send after the completion of data from node, to host node release token request is sent, concede bus access power；
After host node response, idle token is sent to next from node；
8）After the completion of all node transmission data in loop, idle token is sent to host node, host node is obtained after token,
Can access from node；
If without the need for accessing from node, No. 1 can be passed token to from node, continue above-mentioned conveying flow.
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| CN201710147888.5A CN106656268B (en) | 2017-03-14 | 2017-03-14 | Monitoring equipment utilizing power line carrier technology and monitoring method thereof |
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|---|---|---|---|
| CN201710147888.5A CN106656268B (en) | 2017-03-14 | 2017-03-14 | Monitoring equipment utilizing power line carrier technology and monitoring method thereof |
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| CN106656268A true CN106656268A (en) | 2017-05-10 |
| CN106656268B CN106656268B (en) | 2020-10-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112737639A (en) * | 2020-12-24 | 2021-04-30 | 阳光电源股份有限公司 | Phase sequence identification method for power line carrier communication and photovoltaic system |
| WO2023071520A1 (en) * | 2021-10-29 | 2023-05-04 | 南京泉峰科技有限公司 | Electric tool, mower, data communication method, battery pack and tool system |
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| WO2016165981A1 (en) * | 2015-04-17 | 2016-10-20 | Philips Lighting Holding B.V. | Master communication device for a token network |
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| US20130094352A1 (en) * | 2011-10-18 | 2013-04-18 | Schneider Electric Buildings, Llc | Self-Healing Communications Network |
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| CN112737639A (en) * | 2020-12-24 | 2021-04-30 | 阳光电源股份有限公司 | Phase sequence identification method for power line carrier communication and photovoltaic system |
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| WO2023071520A1 (en) * | 2021-10-29 | 2023-05-04 | 南京泉峰科技有限公司 | Electric tool, mower, data communication method, battery pack and tool system |
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| CN106656268B (en) | 2020-10-02 |
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Effective date of registration: 20230417 Address after: 325604 Delixi Industrial Park, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province Patentee after: DELIXI GROUP INSTRUMENT & INSTRUMENTATION CO.,LTD. Address before: 710071 No. 2 Taibai South Road, Shaanxi, Xi'an Patentee before: XIDIAN University |