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CN105245410A - Data encoding and transmitting method - Google Patents

Data encoding and transmitting method Download PDF

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Publication number
CN105245410A
CN105245410A CN201510797073.2A CN201510797073A CN105245410A CN 105245410 A CN105245410 A CN 105245410A CN 201510797073 A CN201510797073 A CN 201510797073A CN 105245410 A CN105245410 A CN 105245410A
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China
Prior art keywords
data
server
gateway
node
sensor
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CN201510797073.2A
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Chinese (zh)
Inventor
陈虹宇
罗阳
苗宁
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SICHUAN SHENHU TECHNOLOGY Co Ltd
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SICHUAN SHENHU TECHNOLOGY Co Ltd
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Priority to CN201510797073.2A priority Critical patent/CN105245410A/en
Publication of CN105245410A publication Critical patent/CN105245410A/en
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Abstract

The invention provides a data encoding and transmitting method, which comprises the steps of transmitting data of a temperature sensor to a gateway through a summary node, decoding the data to obtain acquired data of the sensor through a server, storing the acquired data and generating a monitoring data page dynamically for a client. The data encoding and transmitting method provided by the invention improves stability of a temperature monitoring system based on the Internet of Things in application, and avoids secondary development of a server side caused by updating of an acquisition node.

Description

A kind of data encoding transmission method
Technical field
The present invention relates to data acquisition, particularly a kind of data encoding transmission method.
Background technology
Technology of Internet of things obtains increasing application in environmental monitoring.The development of sensing technology, wireless network, embedded and the Internet, further promotes the monitoring management of environmental information.Typical monitoring temperature Internet of things system comprises perception, transmission, application 3 levels.Sensing layer utilizes sensor technology to carry out ambient temperature information acquisition.Transport layer transfers to the Internet by radio network technique.The storage of application server realizing monitoring temperature data, realizes user oriented portal website or realizes environmental temperature monitoring with the form of client.But in prior art, transducer is subject to the impact of the changeable factor of ambient scene complex information such as temperature, frequent needs are replaced or are upgraded, or user needs to increase the environmental difference that number of sensors of the same type carries out monitoring temperature data in addition, therefore bring extra delay and load when realizing transducer and data acquisition to the information processing of gateway and transmission.
Summary of the invention
For solving the problem existing for above-mentioned prior art, the present invention proposes a kind of data encoding transmission method, comprising:
Temperature sensor data is passed to gateway by gathering node, and server obtains the data of transducer collection by decoding, stores the data of described collection and dynamically generates the monitor data page to client.
Preferably, described server obtains the data of transducer collection by decoding, comprises further:
Described server and described gateway carry out the transfer of data based on HTTP, and the Zigbee network set up from acquisition node to be sent to gateway data flow by gathering node obtains out the data that actual transducer gathers; First acquisition node ID corresponding to serial interface communication data flow first byte is taken out by JAVA local interface, acquisition node allocation list in Query Database, obtains each sensor parameter value start byte, end byte, sensor ID descriptor in a stream; According to the numerical value of start byte, end byte, by the temperature data of 16 system transducers in communications command data flow, after converting 10 systems to, calculate actual value according to numerical value conversion coefficient; Finally, generating with sensor ID is the sensing data table of Column Properties, is stored to database.
Preferably, describedly dynamically generate the monitor data page to client, comprise further:
Described client browser to server request data, the sensor ID in the acquisition node configuration information table in requesting query database, collecting location information; The real time data inspecting page of client browser describes according to collecting location and carries out classification of type, and every class is as the monitoring view label of temperature data, then all the sensors ID judging to belong under a certain collecting location and corresponding sensor name; Simultaneously client browser is periodically to the temperature data monitoring latest data value that server request sensor ID is corresponding, be finally filled in the display module that client browser specifies, and then displays temperature data monitors the page in real time;
Each of list is generated according to each of collecting location classification, arrange list each choose after intercept, when checked to the title of all the sensors ID under the current collecting location of server data library inquiry and correspondence, according to the query time section of user's input, to the statistics that server database query sensors ID is corresponding, show statistics figure.
Preferably, described server and described gateway carry out the transfer of data based on HTTP, comprise further:
Adopt and realize network data cross-platform transmission between gateway and server based on the description of XML data structure, described gateway initiates HTTP request and the echo message of processing server to server, comprises the data communication of following 3 types:
(1) when user interactions triggers, the synchronous acquisition node configuration information of gateway to server is realized;
(2) gateway periodically initiates heartbeat message to server, judge the network communication status between gateway and server, according to the server response results received, gateway judges whether that server initiatively initiates the information of the acquisition node configuration of synchronous gateway, if there is server initiatively to initiate the information of the acquisition node configuration of synchronous gateway, then resolve the information of acquisition node configuration and more new database;
(3) the temperature data information of gateway periodically synchro pick-up, sets up the data of local file for storage sensor parameter during program initialization; Whenever arriving transmission cycle, judge the server communication state of heartbeat message, if server communication state is successfully, this encapsulation of data is written to the root node end in local file, the content of file reading, uploads onto the server again, and judges whether server correctly responds, correct response then empties the record in local file, otherwise reservation record; If server communication state is unsuccessfully, then this encapsulation of data is inserted into the root node end in local file, not initiating communication request.
The present invention compared to existing technology, has the following advantages:
The present invention proposes a kind of data encoding transmission method, improve the temperature monitoring system stability in the application based on Internet of Things, avoid the renewal of acquisition node to cause the secondary development of server end.
Accompanying drawing explanation
Fig. 1 is the flow chart of the data encoding transmission method according to the embodiment of the present invention.
Embodiment
Detailed description to one or more embodiment of the present invention is hereafter provided together with the accompanying drawing of the diagram principle of the invention.Describe the present invention in conjunction with such embodiment, but the invention is not restricted to any embodiment.Scope of the present invention is only defined by the claims, and the present invention contain many substitute, amendment and equivalent.Set forth many details in the following description to provide thorough understanding of the present invention.These details are provided for exemplary purposes, and also can realize the present invention according to claims without some in these details or all details.
An aspect of of the present present invention provides a kind of data encoding transmission method.Fig. 1 is the data encoding transmission method flow chart according to the embodiment of the present invention.
The present invention is by the dynamic generation of the temperature data page and the Dynamic Announce of data, and realize the data syn-chronization of temperature data, to improve the temperature monitoring system stability in the application based on Internet of Things, the renewal of acquisition node is avoided to cause the secondary development of server end.Temperature monitoring system comprises acquisition node, gathers node, gateway, server, user's Remote client module.Acquisition node adopts the Zigbee communication order Ad hoc mode of star formation wireless-transmission network and gathers node and carries out radio communication.Gather node order data stream and serial interface communication RS485 data flow are changed mutually, and IAD.Gateway realize the parsing of acquisition node communication data stream and encapsulation, the storage of temperature data and instruction the function such as to issue, and with GPRS module accessing Internet, to realize and server data communication.Server carries out the storage of temperature data, builds the access to netwoks of user monitoring device clients browser.
Gateway application and server application adopt HTTP transmission mechanism.Adopt and realize network data cross-platform transmission between gateway and server based on the description of XML data structure.System software module comprises acquisition node configuration, image data parsing, transmitted data on network encapsulation, displaying, data synchronization transmissions.
Acquisition node pick-up transducers information is also wirelessly sent to gateway, its configuration is user by the essential information of the relevant acquisition node of gateway application page input, comprises acquisition node ID, sensor name, sensor ID, data unit, place, the start byte of monitoring parameter and end byte and (sets communications command data flow as B 1..., B n, X is to the temperature data B of Y byte representation transducer x..., B y, then X is start byte, and Y is end byte, wherein 1<X≤Y≤N), monitoring parameter bound scope, carry out configuration and the registration of this node, and be stored to database.
The data that the transducer that the data flow that the Zigbee network that acquisition node is set up is sent to gateway obtains out reality gathers.First system takes out acquisition node ID corresponding to serial interface communication data flow first byte by JAVA local interface, and the acquisition node allocation list in Query Database obtains each sensor parameter value descriptor such as start byte, end byte, sensor ID in a stream.According to the numerical value of start byte, end byte, by the temperature data of 16 system transducers in communications command data flow, after converting 10 systems to, calculate actual value according to numerical value conversion coefficient.Finally, generating with sensor ID is the sensing data table of Column Properties, is stored to database.
For realizing the cross-platform transmission of image data in the Internet, the sensor parameter value that the configuration information of acquisition node and image data parse by system carries out the description encapsulation of XML data structure.
The method that real-time monitoring is shown is: inquire about the description of collecting location in acquisition node configuration information and classify, sorted every label as a monitoring view.Obtain the corresponding relation of the sensor parameters title corresponding to each sensor ID in current monitor view, data unit, maximum, minimum value again, and the actual numerical value parsed by Zigbee image data parsing module that query sensors ID is corresponding.So just parameter name, actual numerical value, data unit, the percentage progress that calculated by actual numerical value and maximum and minimum value are shown as each row of current monitor view.
The method that statistics monitoring is shown is: by each label of the form display monitoring view of list, arrange to intercept to list and choose operation, after certain monitoring view of list is chosen, generate the button of the sensor parameters title of current monitor view, again button is arranged and intercept clicking operation, if clicked, trigger the monitoring numerical value corresponding to sensor ID of this button of inquiry, describe in conjunction with query time section, maximum, minimum value, generate statistics curve chart.
Gateway initiates HTTP request and the echo message of processing server to server, comprises the data communication of 3 types:
(1) when user interactions triggers, the synchronous acquisition node configuration information of gateway to server is realized.
(2) gateway periodically initiates the less heartbeat message of data volume to server, and for judging network communication status between gateway and server, and settlement server initiatively can not carry out the problem of active synchronization data to gateway initiating communication.According to the server response results received, gateway judges whether that server initiatively initiates the information of the acquisition node configuration of synchronous gateway, if had, resolve information that acquisition node configures also more new database.
(3) the temperature data information of gateway periodically synchro pick-up, sets up the data of local file for storage sensor parameter during program initialization.When transmission cycle arrives, judge the server communication state of heartbeat message: if server communication state is as successful, this encapsulation of data is written to the root node end in local file, the content of file reading again, upload onto the server, and judging whether server correctly responds, correct response then empties the record in local file, otherwise reservation record; If server communication state is unsuccessfully, then this encapsulation of data is inserted into the root node end in local file, not initiating communication request.
Client browser, to server request data, realizes interactive pages and upgrades.The descriptor such as sensor ID, collecting location in acquisition node configuration information table in requesting query database.The real time data inspecting page of client browser describes according to collecting location and carries out classification of type, and every class is as the monitoring view label of temperature data, then all the sensors ID judging to belong under a certain collecting location and corresponding sensor name.
Simultaneously client browser is periodically to the temperature data monitoring latest data value that server request sensor ID is corresponding, be finally filled in the display module that client browser specifies, and then displays temperature data monitors the page in real time.The displaying of the statistics page of client browser generates each of list according to each of collecting location classification, arrange list each choose after intercept, when selected then to the title of all the sensors ID under the current collecting location of server data library inquiry and correspondence, as the display Name of control button, operation is intercepted in the click arranging control button, after clicked, according to the query time section of user's input, to the statistics that server database query sensors ID is corresponding, display is in table, and the figure that shows statistics.
Server receives the HTTP request that gateway is initiated, and the command type obtaining request judges, comprises 3 kinds of process types.
(1) when ordering as synchronous acquisition node configuration information, the information content is parsed to each descriptor of acquisition node configuration based on XML programming tool, more acquisition node allocation list in new database.(2) when ordering as heartbeat message, judge whether client browser has the order mark of the synchronous acquisition Joint Enterprise being sent to server database, have, data are carried out the description encapsulation of XML data structure, and setting command type is synchronous acquisition Joint Enterprise, write after converting sequence in response data stream.(3) when ordering as the temperature data of synchro pick-up, judging the record number of encapsulation of data, by the circulation of software, from top to bottom the numerical value of each sensor ID and correspondence being parsed, the temperature data table of the transducer of write into Databasce to data content one by one.
For the data acquisition under zigbee agreement, the present invention adopts following sensor network monitoring data collection method, and namely gateway adopts monitor data to build the shortest collection path, local.Node on the shortest collection path, local, sends if any informational needs, then along this path, information is sent to gateway at once, when arriving the time threshold preset, and this path failure.Node in network not on the shortest collection path needs transmission if any data, then gather node by along being transferred to step by step to the optimal path gathering node of storing in this node-routing list.If by way of node on the shortest collection path, local, then can tackle interim data by way of node, the data being about to receive forward by the route to gateway stored in its route list, and then shorten the transmission range of Sensor monitoring data, improve fail safe and the timeliness of data in network.
Gather node in network, periodically to issue monitor data carry out route initialization.Monitor data carries record the sequence sn by way of each node ID number, the average residual energy by way of each node and the optimal value D by way of route 1.During route initialization, gather node and broadcast monitor data in network.After node receives monitor data, node will utilize the data stored from monitor data and himself neighbor list calculate this monitor data arrive this node optimal value D through path 1, and by D 1with the D stored in self neighbor list scompare, so determine whether upgrade store in neighbor list to the routing iinformation gathering node.
If D 1<D s, so by starting to upgrade, it stores receiving node to the routing iinformation gathering node: first upgrade optimal value, by D 1assignment is to D s; Secondly the optimal path of more new record, by sequence sn assignment to sn 1.After end, receiving node starts to upgrade the data stored in monitor data: be first stored in sequence sn tail end first space by its No. ID, then its dump energy information is also joined in this inquiry beacon, finally also upgrade the route total power consumption recorded by sequence sn stored in inquiry beacon by power consumption formulae discovery.After receiving node has upgraded monitor data, namely broadcast this monitor data to its neighbor node.
If D 1=D s, so first this receiving node obtains fetch squence sn from monitor data, then compares the sequence sn stored in its neighbor list 1with the length of sequence sn.Length as infructescence sn is greater than sequence sn 1length, so receiving node abandons this monitor data; Otherwise first receiving node upgrades it and is stored in optimal path information in neighbor list, by sequence sn assignment to sn 1.Then upgrade monitor data, and broadcast this monitor data to its neighbor node.
If D 1>D s, receiving node abandons this monitor data.After initialization terminates, in network, each node is all formed and safeguards one separately and is stored into the neighbor list gathering node optimal path information.
Gateway broadcasts inquiry beacon constructs new shortest path.Following information is carried: the operating time t of gateway in inquiry beacon r, letter of reference target residue hop count tt l, record sequence sn by way of each node ID number 0, by way of each node average residual energy and the optimal value D through path 2.In network, each node all preserves the optimal value D that it arrives gateway c, a moment t is set simultaneously urecord D cupdated time last time.
When node is at moment t breceive inquiry beacon, then node by the information utilizing the information that stores in its neighbor list and discharge from inquiry beacon to calculate this inquiry beacon through the optimal value D of route 2, then determine whether upgrade the routing iinformation that it arrives gateway.
If D 2<D c, then first receiving node will upgrade the optimal path information that it arrives gateway: by D 2assignment is to D c, by t bassignment is to moment t u, by sequence sn 0assignment is to sn 2; Then the information stored in inquiry beacon is upgraded according to the following rules: be stored in sequence sn by its No. ID 0in tail end first space; Join in this inquiry beacon by corresponding for dump energy information; Calculate and upgrade inquiry beacon in store by sequence sn 0the route total power consumption of record; Revise letter of reference target residue hop count.If revised tt lvalue is greater than zero, then receiving node broadcasts this inquiry beacon to its neighbor node; Otherwise receiving node abandons this inquiry beacon.
If D 2>=D cand t b>t u+ t r, then first receiving node starts to upgrade the optimal path information that it arrives gateway: by D 2assignment is to D c, by t bassignment is to moment t u, by sequence sn 0assignment is to sn 2; Then receiving node upgrades inquiry beacon, and judges whether to forward this inquiry beacon by residue hop count ttl.If D 2>=D cand t b≤ t u+ t r, then receiving node abandons this inquiry beacon.At the end of query script, formation one is the shortest collection path, local of root by gateway, and the size in the shortest collection path, local forwards number tt by the inquiry beacon that network-control person is pre-set ldetermine.
In network, all in store its of each node arrives the optimal path information gathering node and gateway, and when node has data to need to upload, first node will judge the current effective routing whether existed towards gateway.Such as, when nodes A has data to need to transmit, first node A needs to verify the information stored in its neighbor list and judges whether to have the effective routing towards gateway.If t b<t u+ t r, then node A is on the shortest collection path, local taking gateway as root this moment, and therefore node A is transferred to gateway by along the optimal path to gateway stored in its neighbor list step by step data.If t b>t u+ t r, then node A does not lead to the active path of gateway this moment.Therefore node A needs to gather node along its data being transferred to step by step to the optimal path gathering node of storing.In transfer of data way, if by way of Nodes on the shortest collection path, local taking gateway as root, then will should tackle the data transmitted by way of node, and by the data retransmission intercepted to gateway.The data of node on the shortest collection path, local effectively can be tackled by this strategy, and then reduce the communication delay of network and the data retransmission amount of node.
In sum, the present invention proposes a kind of data encoding transmission method, improve the temperature monitoring system stability in the application based on Internet of Things, avoid the renewal of acquisition node to cause the secondary development of server end.
Obviously, it should be appreciated by those skilled in the art, above-mentioned of the present invention each module or each step can realize with general computing system, they can concentrate on single computing system, or be distributed on network that multiple computing system forms, alternatively, they can realize with the executable program code of computing system, thus, they can be stored and be performed by computing system within the storage system.Like this, the present invention is not restricted to any specific hardware and software combination.
Should be understood that, above-mentioned embodiment of the present invention only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, any amendment made when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.In addition, claims of the present invention be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.

Claims (4)

1. a data encoding transmission method, is characterized in that, comprising:
Temperature sensor data is passed to gateway by gathering node, and server obtains the data of transducer collection by decoding, stores the data of described collection and dynamically generates the monitor data page to client.
2. method according to claim 1, is characterized in that, described server obtains the data of transducer collection by decoding, comprises further:
Described server and described gateway carry out the transfer of data based on HTTP, and the Zigbee network set up from acquisition node to be sent to gateway data flow by gathering node obtains out the data that actual transducer gathers; First acquisition node ID corresponding to serial interface communication data flow first byte is taken out by JAVA local interface, acquisition node allocation list in Query Database, obtains each sensor parameter value start byte, end byte, sensor ID descriptor in a stream; According to the numerical value of start byte, end byte, by the temperature data of 16 system transducers in communications command data flow, after converting 10 systems to, calculate actual value according to numerical value conversion coefficient; Finally, generating with sensor ID is the sensing data table of Column Properties, is stored to database.
3. method according to claim 2, is characterized in that, describedly dynamically generates the monitor data page to client, comprises further:
Described client browser to server request data, the sensor ID in the acquisition node configuration information table in requesting query database, collecting location information; The real time data inspecting page of client browser describes according to collecting location and carries out classification of type, and every class is as the monitoring view label of temperature data, then all the sensors ID judging to belong under a certain collecting location and corresponding sensor name; Simultaneously client browser is periodically to the temperature data monitoring latest data value that server request sensor ID is corresponding, be finally filled in the display module that client browser specifies, and then displays temperature data monitors the page in real time;
Each of list is generated according to each of collecting location classification, arrange list each choose after intercept, when checked to the title of all the sensors ID under the current collecting location of server data library inquiry and correspondence, according to the query time section of user's input, to the statistics that server database query sensors ID is corresponding, show statistics figure.
4. method according to claim 3, is characterized in that, described server and described gateway carry out the transfer of data based on HTTP, comprise further:
Adopt and realize network data cross-platform transmission between gateway and server based on the description of XML data structure, described gateway initiates HTTP request and the echo message of processing server to server, comprises the data communication of following 3 types:
(1) when user interactions triggers, the synchronous acquisition node configuration information of gateway to server is realized;
(2) gateway periodically initiates heartbeat message to server, judge the network communication status between gateway and server, according to the server response results received, gateway judges whether that server initiatively initiates the information of the acquisition node configuration of synchronous gateway, if there is server initiatively to initiate the information of the acquisition node configuration of synchronous gateway, then resolve the information of acquisition node configuration and more new database;
(3) the temperature data information of gateway periodically synchro pick-up, sets up the data of local file for storage sensor parameter during program initialization; Whenever arriving transmission cycle, judge the server communication state of heartbeat message, if server communication state is successfully, this encapsulation of data is written to the root node end in local file, the content of file reading, uploads onto the server again, and judges whether server correctly responds, correct response then empties the record in local file, otherwise reservation record; If server communication state is unsuccessfully, then this encapsulation of data is inserted into the root node end in local file, not initiating communication request.
CN201510797073.2A 2015-11-18 2015-11-18 Data encoding and transmitting method Pending CN105245410A (en)

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CN108111612A (en) * 2017-12-26 2018-06-01 深圳市海恒智能科技有限公司 The online registration method and device of book self-help equipment
CN111131403A (en) * 2019-12-06 2020-05-08 深圳猛犸电动科技有限公司 Message coding and decoding method and device for Internet of things equipment
CN111596628A (en) * 2020-05-29 2020-08-28 北京赛博云睿智能科技有限公司 Acquisition method and acquisition system for mass industrial data

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Application publication date: 20160113