CN102064860A - Information acquisition system based on Bluetooth Ad Hoc network - Google Patents
Information acquisition system based on Bluetooth Ad Hoc network Download PDFInfo
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Abstract
The invention discloses an information acquisition system based on a Bluetooth Ad Hoc network, mainly solving the problem that the traditional data acquisition system does not have flexibility and expandability. The information acquisition system comprises a master information acquisition server (101), a master information acquisition node (102) and a slave information acquisition node (103), wherein the slave information acquisition node sends information data collected by an information acquisition module to the master information acquisition node by Bluetooth equipment; the master information acquisition node receives and collects the information data of the slave node and directly or indirectly sends the collected information data to the master information acquisition server by the Bluetooth equipment; and the master information acquisition server calculates, sorts and stores the collected information data sent from the master information acquisition node. The information acquisition system can perform multiple information acquisition methods, can adapt to varied information acquisition environments, effectively expand the information acquisition range and can be used for collecting information for medium and short distances.
Description
Technical field
The invention belongs to wireless communication technology field, relate to and use the method that the bluetooth MANET is realized information gathering, can be used for the information gathering of the bluetooth ad-hoc network of short-distance and medium-distance.
Background technology
In current this information age, information data has more and more obtained people and has paid attention to, and the information data collection more becomes the basis of this information age.Traditional information collecting method is manually to carry out data record, carries out the data statistics arrangement then, and the method for this data acquisition is not only time-consuming but also require great effort, and cost of labor is very high; Also have the data that to gather directly to be transferred to the method that the method for master server is carried out data acquisition, but the laying cost of cable network and its very flexible become the maximum disadvantage of this data acquisition modes by cable network; Using rfid technology has appearred in recent years, the method of data being gathered as WIFI or Bluetooth technology, the basic thought of these acquisition methods is that harvester is connected by wireless method with recording equipment, when the needs image data, harvester is placed in the recording equipment wireless network scope, carry out acquisition and carry out data acquisition, though this method can be avoided the trouble of manual record in the traditional data collection, improved the flexibility of data acquisition to a certain extent, but because the restriction of wireless communication distance, gatherer process still needs the full-time staff to utilize professional equipment to carry out the collection of data to the specific data collecting location, so not only increase cost of labor, and can't realize the real-time collection of data.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned existing information acquisition system, a kind of information acquisition system based on the bluetooth MANET is provided,, realize the automation and the intellectuality of image data process so that acquisition node is carried out flexible expansion.
For achieving the above object, information acquisition system of the present invention comprises:
1 information gathering master server, a M information gathering host node and N information gathering are from node, master server and host node, host node and host node, host node and from carrying out wireless connections by bluetooth module respectively between the node, constitute the bluetooth MANET between master server and the host node, host node and from constituting the bluetooth piconet between the node, host node number M selects according to host node density in the network and master server disposal ability, under each host node from the little N of interstitial content in or equal the upper limit of piconet from interstitial content;
Described information gathering is used to gather the target information data from node, and the information data that will gather is sent to the information gathering host node by bluetooth module;
Described information gathering host node is used for information gathering is gathered from the node information data transmitted, and the information data after will gathering by the bluetooth MANET between the host node is sent to the information gathering master server;
Described information gathering master server, the data message after receiving host node that host node sends and gather by bluetooth equipment, taxonomic revision is also stored.
For achieving the above object, information collecting method of the present invention comprises broadcast message acquisition method, local nodes information collecting method and three kinds of technical schemes of active application information acquisition method:
Technical scheme 1: the broadcast message acquisition method based on the bluetooth MANET may further comprise the steps
(1) information gathering master server all host nodes in the bluetooth module network coverage of oneself send the broadcast request data command;
(2) the information gathering host node at first judges whether to be iterated command after receiving master server broadcast request data command, if be iterated command, then abandons; Otherwise then other host nodes are transmitted the broadcast request data command in the bluetooth module network coverage of host node oneself, and poll is gathered in the host node piconet from the nodal information data simultaneously; Secondly whether judgement is effective from the nodal information data, if invalid, abandons information data, if effectively, information data is gathered, and search optimal path, the information data after will gathering directly or indirectly is sent to master server along optimal path;
(3) other information gathering host nodes are after receiving the broadcast request data command that transmits, all execution in step (2);
(4) the information gathering master server receives the summary information data that the information gathering host node directly or indirectly sends, sorting-out in statistics, and store.
Technical scheme 2: the local nodes information collecting method based on the bluetooth MANET may further comprise the steps:
1) the information gathering master server is specified the acquisition node address, and generates the order of node corresponding request msg;
2) information gathering master server all host node sending node request msg orders in the bluetooth module network coverage of oneself;
3) the information gathering host node at first judges whether to be iterated command after receiving the order of primary server joint request msg, if be iterated command, then abandons; Otherwise, then resolve this order, judge whether address information is empty in the order, if be empty, then this order is abandoned, otherwise, then judge whether to exist this host node address or carry out under the host node in the piconet certain from node address, if there is host node address, then poll is gathered in the host node piconet all from the nodal information data; Certain then only gathers this from the nodal information data from node address in the affiliated piconet of host node if exist; Whether judge from the nodal information data effectively then, if invalid, abandon information data, if effectively, the information data after information data gathered and will gather directly or indirectly is sent to master server along optimal path; The node address of gathering is deleted from the request msg order; Host node is other host node forward node request msg orders in the bluetooth module network coverage of oneself;
4) other information gathering host nodes are after receiving the node request msg order that transmits, all execution in step 3);
5) the information gathering master server receives the summary information data that the information gathering host node directly or indirectly sends, sorting-out in statistics, and store.
Technical scheme 3: the active application information acquisition method based on the bluetooth MANET comprises the steps:
(A) the active information collection from node and to affiliated piconet host node send information data;
(B) the information gathering host node is accepted from the nodal information data and is generated corresponding request transmission command;
(C) the information gathering host node will ask transmission command to be sent to the information gathering master server along optimal path;
(D) master server receives and directly or indirectly sends the request transmission command, judge whether to receive request information transmitted data in the order,, then abandon if do not receive, if receive, then the host node that transmits to request along the opposite direction of request transmission command sends and agrees to receive order;
(E) host node receives and agrees to receive order and information data is sent to master server along optimal path;
(F) the information gathering master server receives the summary information data that the information gathering host node directly or indirectly sends, sorting-out in statistics, and store.
The present invention has following advantage:
1. the present invention has inherited the advantage of blue tooth radio network based on Bluetooth wireless communication, helps total system and lays foundation.
2. the present invention utilizes the information gathering master server to carry out the concentrated arrangement storage of data, has reduced the cost of system, helps the statistics of information data simultaneously.
3. to adopt information gathering host node and information gathering be elementary cell from the piconet that node makes up in the present invention, makes that the whole system network layer is with conspicuous characteristics.
4. information gathering host node of the present invention and information gathering master server make up in the MANET mode, help the expansion and the change of collection network.
5. the method for searching optimal path of the present invention's employing effectively alleviates the host node workload, has avoided the generation of the phenomenon that floods in the network simultaneously.
6. the present invention can adopt three kinds of collection control methods, helps the formulation and the execution of different acquisition scheme.
Description of drawings
Fig. 1 is an information acquisition system structural representation of the present invention;
Fig. 2 is a broadcast message acquisition method process flow diagram among the present invention;
Fig. 3 is a local nodes information collecting method process flow diagram among the present invention;
Fig. 4 is an active application information acquisition method process flow diagram among the present invention;
Fig. 5 is that host node is handled sub-process figure among Fig. 2;
Fig. 6 is that host node is handled sub-process figure among Fig. 3;
Fig. 7 is that optimal path is searched sub-process figure among Fig. 2, Fig. 3 and Fig. 4.
Embodiment
With reference to Fig. 1, information acquisition system of the present invention comprises; 1 information gathering master server 101, a M information gathering host node 102 and N information gathering are from node 103.Master server and host node, host node and host node, host node and from carrying out wireless connections by bluetooth module respectively between the node, constitute the bluetooth MANET between master server and the host node, this MANET is overlapped by information gathering master server and M information gathering host node blueteeth network separately and constitutes, host node is equal in the MANET, host node all can be used as via node and transmits data arbitrarily, host node can communicate by single or multiple via nodes and information gathering master server arbitrarily, realizes the extensibility of whole collection network coverage; Host node and from constituting the bluetooth piconet between the node, this piconet is made of from node single information gathering host node and information gathering in its bluetooth module network coverage, only is subordinated to one of them host node what the host node blueteeth network overlapped part from node; Host node number M selects according to host node density in the network and master server disposal ability, is less than or equal to the upper limit of piconet from interstitial content from interstitial content N under each host node.
Described information gathering is from node, comprise information acquisition module, control module, memory module and bluetooth module, information acquisition module Information Monitoring data wherein, control module will be gathered the data of coming and be put into memory module, when information data sends condition maturity, promptly when host node polling message data or when node initiatively sends information data, from memory module sense information data, the information gathering host node under being sent to by bluetooth module in the piconet.
Described information gathering host node is embedded device, operation (SuSE) Linux OS on it, the core of formation bluetooth MANET.This embedded device comprises control module, memory module and bluetooth module.Wherein bluetooth module receives the information data that sends from node, control module is put into memory module after information data is gathered, when information data sends condition maturity, promptly when master server solicited message data or host node initiatively send information data, read this information data from memory module, and the information data after will gathering by bluetooth module is sent to master server along person's optimal path.
Described information gathering master server for loading the private server or the individual PC of bluetooth module, is selected according to the data volume and the amount of calculation of information data.Bluetooth module receives the summary information data that host node directly or indirectly sends, and the program that operates on the master server is carried out sorting-out in statistics with the data that receive, and storage.
Utilizing system of the present invention to carry out information collecting method has 3 kinds, and first kind is the broadcast message acquisition method, and second kind is the local nodes information collecting method, and the third is an active application information acquisition method.Wherein:
The broadcast message acquisition method, the information gathering master server is meant when need obtain all from the nodal information data, send the broadcast request data command in network, all are sent to master server to all host nodes after the nodal information data gather in afterwards just with own piconet receiving this order in the network;
The local nodes information collecting method, the information gathering master server is meant when need obtain the specified node information data, sending node request msg order in network, host node is after receiving this order in the piconet under the specified node, and just the information data with specified node is sent to master server;
Active application information acquisition method, be meant that certain information gathering need be when the information gathering master server transfer information data from node, initiatively host node sends information data in affiliated piconet, host node just sends the request transmission command to master server after receiving this information data, whether this order master server decision after arriving master server receives this information data, if agree to receive then send agreement and receive order to host node, should after receiving this order, just this information data from node be sent to from node from the host node of the father of node, if disagreeing with, master server accepts this information data, then do not do any correspondingly, host node abandons this information data after time data memory is overtime.
With reference to Fig. 2, broadcast message acquisition method of the present invention may further comprise the steps:
Step 1 is set at the broadcast message drainage pattern with the information gathering master server.
Step 2, information gathering master server all host nodes in the bluetooth module network coverage of oneself send the broadcast request data command.
Step 3, the information gathering host node is handled after receiving master server broadcast request data command.
With reference to Fig. 5, being achieved as follows of this step:
3a) judge whether to be iterated command,, then abandon if be iterated command; Otherwise, then carry out downwards;
3b) host node other host nodes in the bluetooth module network coverage of oneself of carrying out this step are transmitted the broadcast request data command;
3c) poll is gathered in the host node piconet from the nodal information data;
3d) whether judgement is effective from the nodal information data, if invalid, abandons information data, otherwise, then carry out downwards;
3e) will gather from the nodal information data, and search optimal path as follows, the information data after will gathering directly or indirectly is sent to master server along optimal path:
With reference to Fig. 7, the step of searching optimal path is as follows:
3e1) search the information gathering host node of optimal path, promptly other host nodes or the master server of source host node in the bluetooth module network coverage of oneself sends and searches server command;
3e2) if master server receives and searches server command, then redirect execution in step 3e5), if host node is searched server command receiving, execution in step 3e3 then);
3e3) judge whether to be iterated command,, then abandon if be iterated command; Otherwise, server command is searched in the adding of host node address information; Search then and whether have the optimal path information that arrives master server in the host node of carrying out this step; If no, then will search interior other information gathering host nodes of bluetooth module network coverage that server command is sent to the host node oneself of carrying out this step; Otherwise, then will search server command and directly be forwarded to next host node in the optimal path;
3e4) other information gathering host nodes receive transmit search server command after, equal execution in step 3e3);
3e5) after searching server command arrival master server, master server at first judges whether to be iterated command, if be iterated command, then abandons; Otherwise, then generate and confirm to arrive order, generate the opposite direction routing information of searching server command according to the address information of receiving of searching in the server command then, will confirm that arriving order is sent to the source host node along the opposite direction of searching server command;
3e6) confirm to arrive the process host node is write down in order in repeating process address information;
3e7) host node confirmation of receipt in source arrives order, the host node address information in the resolve command, and generation pass information, so far optimal path is promptly found.
Step 4, other information gathering host nodes after receiving the broadcast request data command that transmits, equal execution in step 3.
Step 5, the information gathering master server receives the summary information data that the information gathering host node directly or indirectly sends, sorting-out in statistics, and store.
Step 6, when all after information data arrives master server after gathering, this broadcast message gatherer process finishes.
With reference to Fig. 3, local nodes information collecting method of the present invention may further comprise the steps:
Step 1 is set at local nodes information gathering pattern with the information gathering master server.
Step 2, the information gathering master server is specified the acquisition node address, and generates the order of node corresponding request msg.
All the host node sending node request msg orders in the bluetooth module network coverage of oneself of step 3, information gathering master server.
Step 4, the information gathering host node is handled after receiving the order of primary server joint request msg.
With reference to Fig. 6, being implemented as follows of this step:
4a) judge whether to be iterated command,, then abandon if be iterated command; Otherwise, execution in step 4b then);
Address information in the order is promptly obtained in 4b) parse node request msg order, judges whether address information is empty in the order, if be empty, then this order is abandoned, otherwise, then carry out downwards;
4c) judge that certain is from node address in the affiliated piconet of the host node that whether has the host node address of carrying out this step in the request msg command address information or carry out this step, if exist to carry out this step host node address, then poll is gathered in the host node piconet all from the nodal information data; Certain then only gathers this from the nodal information data from node address in the host node piconet if exist; The node address of gathering is deleted from the request msg order;
4d) carry out host node other host node forward node request msg orders in the bluetooth module network coverage of oneself of this step;
4e) whether judgement is effective from the nodal information data, if invalid, abandons information data, if effectively, then carries out downwards;
4f) will gather from the nodal information data, and search optimal path, the information data after will gathering directly or indirectly is sent to master server along optimal path, and it is identical to search the method for searching optimal path in route method and the broadcast message acquisition method step 3;
Step 5, other information gathering host nodes after receiving the node request msg order that transmits, equal execution in step four.
Step 6, the information gathering master server receives the summary information data that the information gathering host node directly or indirectly sends, sorting-out in statistics, and store.
Step 7, information data arrives after the master server after all gather, and this broadcast message gatherer process finishes.
With reference to Fig. 4, active application information acquisition method of the present invention may further comprise the steps:
Steps A uses the collection of active device active information initiatively to apply for drainage pattern from node.
Step B, information gathering sends information data from node host node to affiliated piconet.
Step C, the information gathering host node is accepted from the nodal information data, and generates the request transmission command.
Step D, the information gathering host node is searched optimal path, to ask transmission command to be sent to the information gathering master server along optimal path, the request transmission command write down in being sent to the master server process and passes through host node address information, and it is identical to search the method for searching optimal path in route method and the broadcast message acquisition method step 3;
Step e, master server receives and directly or indirectly sends the request transmission command, judges whether to receive request information transmitted data in the order, if do not receive, then abandons this order, if receive, then carries out downwards.
Step F, master server generate the opposite direction routing information of request transmission command according to the address information in the request transmission command.
Step G, master server will agree to receive order is sent to the request transmission along the opposite direction of request transmission command host node.
Step H, host node receive and agree to receive order and information data is sent to master server along optimal path.
Step I, the information gathering master server receives the direct or indirect information data transmitted of information gathering host node, sorting-out in statistics, and store;
Step J, after the information gathering master server receives information data, this initiatively application information gatherer process end.
More than a kind of information acquisition system and acquisition method based on the bluetooth MANET provided by the present invention is described in detail, and embodiments of the present invention are set forth, the present invention can have many distortion.Those of ordinary skill in the art can all should think protection scope of the present invention from content disclosed by the invention all distortion that directly obtain or that associate.
Claims (7)
1. information acquisition system based on the bluetooth MANET comprises:
An information gathering master server (101), a M information gathering host node (102) and N information gathering are from node (103), master server and host node, host node and host node, host node and from carrying out wireless connections by bluetooth module respectively between the node, constitute the bluetooth MANET between master server and the host node, host node and from constituting the bluetooth piconet between the node, host node number M selects according to host node density in the network and master server disposal ability, is less than or equal to the upper limit of piconet from interstitial content from interstitial content N under each host node;
Described information gathering is used to gather the target information data from node (103), and the information data that will gather is sent to the information gathering host node by bluetooth module;
Described information gathering host node (102) is used for information gathering is gathered from the node information data transmitted, and the information data after will gathering by the bluetooth MANET between the host node is sent to the information gathering master server;
Described information gathering master server (101), the data message after receiving host node that host node sends and gather by bluetooth module, taxonomic revision is also stored.
2. information acquisition system according to claim 1 is characterized in that described bluetooth MANET, is to be overlapped by the network of bluetooth module separately of information gathering master server and M information gathering host node to constitute.
3. information acquisition system according to claim 1, it is characterized in that described bluetooth piconet, be to be made of from node single information gathering host node and information gathering in its bluetooth module network coverage, what information gathering host node blueteeth network overlapped part only is subordinated to one of them host node from node.
4. broadcast message acquisition method based on the bluetooth MANET may further comprise the steps:
(1) information gathering master server all host nodes in the bluetooth module network coverage of oneself send the broadcast request data command;
(2) the information gathering host node at first judges whether to be iterated command after receiving master server broadcast request data command, if be iterated command, then abandons; Otherwise then other host nodes are transmitted the broadcast request data command in the bluetooth module network coverage of host node oneself, and poll is gathered in the host node piconet from the nodal information data simultaneously; Secondly whether judgement is effective from the nodal information data, if invalid, abandons information data, if effectively, information data is gathered, and search optimal path, the information data after will gathering directly or indirectly is sent to master server along optimal path;
(3) other information gathering host nodes are after receiving the broadcast request data command that transmits, all execution in step (2);
(4) the information gathering master server receives the summary information data that the information gathering host node directly or indirectly sends, sorting-out in statistics, and store.
5. the broadcast message acquisition method based on the bluetooth MANET according to claim 4 is characterized in that the described optimal path of searching of step (2), carries out as follows:
2a) search the information gathering host node of optimal path, promptly other host nodes or the master server of source host node in the bluetooth module network coverage of oneself sends and searches server command;
2b) if master server receives and searches server command, then redirect execution in step 2e), if host node is searched server command receiving, execution in step 2c then);
2c) host node receive search server command after, at first judge whether to be iterated command, if be iterated command, then abandon; Otherwise, then search whether have the optimal path that arrives master server in the host node; If no, then will search interior other information gathering host nodes of bluetooth module network coverage that server command is sent to host node oneself; Otherwise, then will search server command and directly be forwarded to next host node in the optimal path;
2d) other information gathering host nodes receive transmit search server command after, equal execution in step 2c);
2e) after searching server command arrival master server, master server at first judges whether to be iterated command, if be iterated command, then abandons; Otherwise, then generate and confirm to arrive order, generate the opposite direction routing information of searching server command according to the address information of receiving of searching in the server command then, will confirm that arriving order is sent to the source host node along the opposite direction of searching server command;
2f) confirm to arrive the process host node is write down in order in repeating process address information;
2g) host node confirmation of receipt in source arrives order, the host node address information in the resolve command, and generation pass information, so far optimal path is promptly found.
6. local nodes information collecting method based on the bluetooth MANET may further comprise the steps:
1) the information gathering master server is specified the acquisition node address, and generates the order of node corresponding request msg;
2) information gathering master server all host node sending node request msg orders in the bluetooth module network coverage of oneself;
3) the information gathering host node at first judges whether to be iterated command after receiving the order of primary server joint request msg, if be iterated command, then abandons; Otherwise, then resolve this order, judge whether address information is empty in the order, if be empty, then this order is abandoned, otherwise, then judge whether to exist this host node address or carry out under the host node in the piconet certain from node address, if there is host node address, then poll is gathered in the host node piconet all from the nodal information data; Certain then only gathers this from the nodal information data from node address in the affiliated piconet of host node if exist; Whether judge from the nodal information data effectively then, if invalid, abandon information data, if effectively, the information data after information data gathered and will gather directly or indirectly is sent to master server along optimal path; The node address of gathering is deleted from the request msg order; Host node is other host node forward node request msg orders in the bluetooth module network coverage of oneself;
4) other information gathering host nodes are after receiving the node request msg order that transmits, all execution in step 3);
5) the information gathering master server receives the summary information data that the information gathering host node directly or indirectly sends, sorting-out in statistics, and store.
7. the active application information acquisition method based on the bluetooth MANET comprises the steps:
(A) the active information collection from node and to affiliated piconet host node send information data;
(B) the information gathering host node is accepted from the nodal information data and is generated corresponding request transmission command;
(C) the information gathering host node will ask transmission command to be sent to the information gathering master server along optimal path;
(D) master server receives and directly or indirectly sends the request transmission command, judge whether to receive request information transmitted data in the order,, then abandon if do not receive, if receive, then the host node that transmits to request along the opposite direction of request transmission command sends and agrees to receive order;
(E) host node receives and agrees to receive order and information data is sent to master server along optimal path;
(F) the information gathering master server receives the summary information data that the information gathering host node directly or indirectly sends, sorting-out in statistics, and store.
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