CN109660966A - A kind of Research on Vehicle Remote Monitoring System Based on GPRS and method - Google Patents
A kind of Research on Vehicle Remote Monitoring System Based on GPRS and method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/126—Shortest path evaluation minimising geographical or physical path length
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/46—Cluster building
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/04—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources
- H04W40/10—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources based on available power or energy
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/20—Communication route or path selection, e.g. power-based or shortest path routing based on geographic position or location
Abstract
The present invention provides a kind of Research on Vehicle Remote Monitoring System Based on GPRS and methods, the system comprises radio sensor network monitoring module, vehicle monitoring center and local device, the radio sensor network monitoring module, local device are all connect with the vehicle monitoring center to center communications；The described method includes: vehicle monitoring center receives and stores the car status information of each sensor node acquisition from radio sensor network monitoring module；The vehicle monitoring center receives the ID authentication request sent by local device；The local device is verified according to the ID authentication request at the vehicle monitoring center；The vehicle monitoring center is established with the local device and is communicated to connect after being proved to be successful to the local device；The access request for the local device that the vehicle monitoring center response establishes communication, provides the operation interface of the data of storage to the local device established communication.
Description
Technical field
The present invention relates to vehicle monitoring technical fields, and in particular to a kind of Research on Vehicle Remote Monitoring System Based on GPRS and method.
Background technique
Can grasp travel condition of vehicle at any time during logistics transportation and cargo environmental parameter have it is highly important
Meaning.We should increase the supervision of haulage vehicle, be measured in real time to haulage vehicle.
With the development of computer technology and wireless sensor network technology, the wireless monitor in extensive area is provided
Possible ways and means.Wireless sensor network is the net being made of a large amount of wireless sensor nodes with self-organizing mode
Network, it has, and sensor node density is high, network topology change is frequent and node power, computing capability and car status information
The features such as storage capacity is limited so that wireless sensor network environmental monitoring military affairs, medical treatment & health, family intelligent monitoring and its
He has a wide range of applications at commercial field.However, the finite energy of existing wireless sensor network because sensor node,
Still remain more defect.
Internet of Things (IOT, the Internet Of Things) is extension and expansion based on the internet, Internet of Things
It is a dynamic global network infrastructure, it has the self organization ability based on standard and interoperability communication protocol, wherein
Physics and virtual " object " have identity, physical attribute, virtual characteristic and intelligence interface, and with information network without
Seam integration.The key technology of Internet of Things has radio frequency identification, Sensor Network, M2M, two to change fusion etc..Internet of Things is by various information sensings
Equipment, such as wireless sensor network (WSN, Wireless Sensor Network) node, RFIS device, infrared inductor, shifting
Start the various devices such as machine, PSA, global positioning system (GPS, Global Positioning System), laser scanner with
Internet combines and a huge network being formed.In modern society, the application of Internet of Things is quite extensive.Internet of Things and
Logistics and transportation industry combine brings out the best in each other, the Internet of Things of logistics field refer to by various information sensor equipment Logistics Equipment with
Internet combines the Internet of Things system to form a wisdom, realizes long-range monitoring, monitoring and control to mobile Logistics Equipment
System.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of Research on Vehicle Remote Monitoring System Based on GPRS and method.
The purpose of the present invention is realized using following technical scheme:
First aspect present invention embodiment provides a kind of Research on Vehicle Remote Monitoring System Based on GPRS, the system comprises:
Radio sensor network monitoring module, vehicle monitoring center and local device, the radio sensor network monitoring
Module, local device are all connect with the vehicle monitoring center to center communications；
The radio sensor network monitoring module includes single aggregation node, multiple sensor nodes and multiple clusters
Cluster is added apart from nearest cluster head in head, each sensor node selection, and the vehicle monitoring center and the aggregation node carry out
Car status information communication；The cluster head is responsible for collecting the car status information of each sensor node acquisition in cluster, and according to certainly
The distance of body to aggregation node selects the mode of direct communication or indirect communication to communicate with the aggregation node；It is described directly logical
Letter is that the car status information of the acquisition of collection is directly sent to the aggregation node by cluster head, and the indirect communication is cluster
The car status information of the acquisition of collection is sent to next-hop node by head, to forward the acquisition by next-hop node
Car status information, until the car status information of the acquisition is sent to aggregation node.
Wherein, according to vehicle monitoring needs, multiclass sensor can be formed using multiple sensors come comprehensive monitoring logistics
The status information of vehicle, environmental parameter locating for operating status and cargo including vehicle.In logistics vehicles car body corresponding positions
Dispersed placement sensor is set, each sensor and a wireless communication module are connected to form sensor node, and according to monitoring
Environment needs can dynamically add more emat sensor.The data of sensor node acquisition are sent to vehicle monitoring by aggregation node
Center.
In a kind of mode that can be realized of first aspect present invention embodiment, the vehicle monitoring center includes receiving
Unit, storage unit, authentication unit, control unit and transmission unit, in which:
Receiving unit is communicated with radio sensor network monitoring module, is used for from radio sensor network monitoring module
Place receives the car status information of each sensor node acquisition, is also used to receive the ID authentication request sent by local device；
Storage unit, for storing the car status information of the acquisition；
Authentication unit, for being verified according to the ID authentication request to the local device；
Control unit, for controlling transmission unit and described after authentication unit is proved to be successful the local device
Ground equipment establishes communication connection.
In one embodiment, the ID authentication request includes certificate, and the Cloud Server module is to the certificate
It is verified, if the certificate is correct, decision verification success.In this another embodiment, the ID authentication request
Including key, the Cloud Server module verifies the key, if the key is correct, decision verification success.
In a kind of mode that can be realized of first aspect present invention embodiment, the authentication unit is to the local
After equipment is proved to be successful, the authentication unit is also used to:
The number that the local device sends ID authentication request is detected, when the number for sending ID authentication request is greater than in advance
If when threshold value, refusal establishes connection with the local device.
In a kind of mode that can be realized of first aspect present invention embodiment, the authentication unit is to the local
After equipment is proved to be successful, described control unit responds the access request of local device, controls the transmission unit and provides
The operation interface of the data of storage gives the local device；
Described control unit responds operation of the local device based on the operation interface.
The above embodiment of the present invention passes through the interaction at vehicle monitoring center and local device, can more effectively facilitate user
Real time inspection car status information；By carrying out authentication to local device, the protection of data-privacy is realized.
In a kind of mode that can be realized of first aspect present invention embodiment, the vehicle monitoring center further includes ratio
Compared with unit, the comparing unit is used to for the car status information of the acquisition being compared with corresponding preset threshold range,
When car status information exceeds corresponding preset threshold range, described control unit controls the transmission unit to the local
Equipment sends warning message.
Real-time monitoring is carried out to data by comparing unit, is conducive to the exception information that user understands vehicle-state in time,
It takes appropriate measures in time convenient for user, ensures the safety of logistics.
Second aspect of the present invention embodiment provides a kind of vehicle applied to Research on Vehicle Remote Monitoring System Based on GPRS as described above
Long-distance monitoring method, this method comprises:
Vehicle monitoring center receives and stores the vehicle of each sensor node acquisition from radio sensor network monitoring module
Status information；
The vehicle monitoring center receives the ID authentication request sent by local device；
The local device is verified according to the ID authentication request at the vehicle monitoring center；
Communication link is established after being proved to be successful to the local device, with the local device in the vehicle monitoring center
It connects；
The access request for the local device that the vehicle monitoring center response establishes communication, provides the data of storage
Operation interface is to the local device established communication；
The radio sensor network monitoring module includes single aggregation node, multiple sensor nodes and multiple clusters
Cluster is added apart from nearest cluster head in head, each sensor node selection, and the vehicle monitoring center and the aggregation node carry out
Car status information communication；The cluster head is responsible for collecting the car status information of each sensor node acquisition in cluster, and according to certainly
The distance of body to aggregation node selects the mode of direct communication or indirect communication to communicate with the aggregation node；It is described directly logical
Letter is that the car status information of the acquisition of collection is directly sent to the aggregation node by cluster head, and the indirect communication is cluster
The car status information of the acquisition of collection is sent to next-hop node by head, to forward the acquisition by next-hop node
Car status information, until the car status information of the acquisition is sent to aggregation node.
In a kind of mode that can be realized of third aspect present invention embodiment, this method further include:
The car status information of the acquisition is compared by the vehicle monitoring center with corresponding preset threshold range,
When car status information exceeds corresponding preset threshold range, warning message is sent to the local device for establishing communication connection.
The present invention realizes the real-time collecting of car status information, grasps the operating status and goods of vehicle in real time convenient for user
Environmental information locating for object acquires by using wireless sensor network and transmits car status information, not only can be largely
Upper reduction power consumption guarantees the complete stabilization of data, may be omitted with cumbersome lengthy and jumbled sensing wiring, saves significantly from manpower and material resources
About resource.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings, but the embodiment in attached drawing is not constituted to any limit of the invention
System, for those of ordinary skill in the art, without creative efforts, can also obtain according to the following drawings
Other attached drawings.
Fig. 1 is the structural schematic block diagram of the Research on Vehicle Remote Monitoring System Based on GPRS of an illustrative embodiment of the invention；
Fig. 2 is a kind of flow diagram of remote vehicle monitoring method of an illustrative embodiment of the invention.
Appended drawing reference:
Radio sensor network monitoring module 10, vehicle monitoring center 20, local device 30.
Specific embodiment
The invention will be further described with the following Examples.
Referring to Fig. 1, first aspect present invention embodiment provides a kind of Research on Vehicle Remote Monitoring System Based on GPRS, the system comprises:
Radio sensor network monitoring module 10, vehicle monitoring center 20 and local device 30, the wireless sensor network
Network monitoring modular 10, local device 30 are all communicated to connect with the vehicle monitoring center 20；
The radio sensor network monitoring module 10 includes single aggregation node, multiple sensor nodes and multiple clusters
Cluster is added apart from nearest cluster head in head, the selection of each sensor node, the vehicle monitoring center 20 and the aggregation node into
The communication of row car status information；The cluster head is responsible for collecting the car status information of each sensor node acquisition in cluster, and according to
Itself is communicated to the distance selection direct communication of aggregation node or the mode of indirect communication with the aggregation node；It is described direct
Communication is that the car status information of the acquisition of collection is directly sent to the aggregation node by cluster head, and the indirect communication is
The car status information of the acquisition of collection is sent to next-hop node by cluster head, to forward the acquisition by next-hop node
Car status information, until the car status information of the acquisition is sent to aggregation node.
Wherein, according to vehicle monitoring needs, multiclass sensor can be formed using multiple sensors come comprehensive monitoring logistics
The status information of vehicle, environmental parameter locating for operating status and cargo including vehicle.In logistics vehicles car body corresponding positions
Dispersed placement sensor is set, each sensor and a wireless communication module are connected to form sensor node, and according to monitoring
Environment needs can dynamically add more emat sensor.The data of sensor node acquisition are sent to vehicle monitoring by aggregation node
Center 20.
The above embodiment of the present invention realizes the real-time collecting of car status information, grasps the fortune of vehicle in real time convenient for user
Environmental information locating for row state and cargo acquires and is transmitted by using wireless sensor network car status information, not only may be used
Largely to reduce power consumption, guarantee the complete stabilization of data, may be omitted with cumbersome lengthy and jumbled sensing wiring, from manpower object
Resource is greatly saved in power.
In a kind of mode that can be realized of first aspect present invention embodiment, the vehicle monitoring center 20 includes connecing
Receive unit, storage unit, authentication unit, control unit and transmission unit, in which:
Receiving unit is communicated with radio sensor network monitoring module 10, is used for from radio sensor network monitoring mould
The car status information that each sensor node acquisition is received at block 10, is also used to receive the authentication sent by local device 30
Request；
Storage unit, for storing the car status information of the acquisition；
Authentication unit, for being verified according to the ID authentication request to the local device 30；
Control unit, for after authentication unit is proved to be successful the local device 30, control transmission unit with it is described
Local device 30 establishes communication connection.
In one embodiment, the ID authentication request includes certificate, and the Cloud Server module is to the certificate
It is verified, if the certificate is correct, decision verification success.In this another embodiment, the ID authentication request
Including key, the Cloud Server module verifies the key, if the key is correct, decision verification success.
In a kind of mode that can be realized of first aspect present invention embodiment, the authentication unit is to the local
After equipment 30 is proved to be successful, the authentication unit is also used to:
The number that the local device 30 sends ID authentication request is detected, when the number for sending ID authentication request is greater than
When preset threshold, refusal establishes connection with the local device 30.
In a kind of mode that can be realized of first aspect present invention embodiment, the authentication unit is to the local
After equipment 30 is proved to be successful, described control unit responds the access request of local device 30, controls the transmission unit
The operation interface of the data of storage is provided to the local device 30；
Described control unit responds the operation of the local device 30 based on the operation interface.
The above embodiment of the present invention passes through the interaction at vehicle monitoring center 20 and local device 30, can more effectively facilitate
User's real time inspection car status information；By carrying out authentication to local device 30, the protection of data-privacy is realized.
In a kind of mode that can be realized of first aspect present invention embodiment, the vehicle monitoring center 20 further includes
Comparing unit, the comparing unit is for comparing the car status information of the acquisition with corresponding preset threshold range
Compared with when car status information exceeds corresponding preset threshold range, described control unit controls the transmission unit to described
Local device 30 sends warning message.
Real-time monitoring is carried out to data by comparing unit, is conducive to the exception information that user understands vehicle-state in time,
It takes appropriate measures in time convenient for user, ensures the safety of logistics.
As shown in Fig. 2, second aspect of the present invention embodiment, which provides one kind, is applied to vehicle remote monitoring as described above
The remote vehicle monitoring method of system, this method comprises:
S01 vehicle monitoring center 20 receives from radio sensor network monitoring module 10 and stores each sensor node and adopts
The car status information of collection.The radio sensor network monitoring module 10 includes single aggregation node, multiple sensor nodes
And cluster is added apart from nearest cluster head in multiple cluster heads, the selection of each sensor node, the vehicle monitoring center 20 with it is described
Aggregation node carries out car status information communication；The cluster head is responsible for collecting the vehicle-state letter of each sensor node acquisition in cluster
Breath, and led to the distance selection direct communication of aggregation node or the mode of indirect communication with the aggregation node according to itself
Letter；The direct communication is that the car status information of the acquisition of collection is directly sent to the aggregation node, institute by cluster head
It states indirect communication and the car status information of the acquisition of collection is sent to next-hop node for cluster head, by next-hop node
The car status information of the acquisition is forwarded, until the car status information of the acquisition is sent to aggregation node.
S02 vehicle monitoring center 20 receives the ID authentication request sent by local device 30.
The local device 30 is verified according to the ID authentication request at vehicle monitoring center 20 described in S03.?
In a kind of embodiment, the ID authentication request includes certificate, and the Cloud Server module verifies the certificate, if
The certificate is correct, then decision verification success.In this another embodiment, the ID authentication request includes key, institute
Cloud Server module is stated to verify the key, if the key is correct, decision verification success.
Vehicle monitoring center 20 described in S04 is built after being proved to be successful to the local device 30 with the local device 30
Vertical communication connection.
The access request for the local device 30 that the response of vehicle monitoring center 20 described in S05 establishes communication, provides storage
Data operation interface to the local device 30 established communication.
In a kind of mode that can be realized of third aspect present invention embodiment, this method further include:
The car status information of the acquisition is compared at the vehicle monitoring center 20 with corresponding preset threshold range
Compared with when car status information exceeds corresponding preset threshold range, to the transmission alarm of local device 30 for establishing communication connection
Information.
In a kind of Research on Vehicle Remote Monitoring System Based on GPRS of above-described embodiment and method, it is described according to itself to aggregation node away from
Mode from selection direct communication or indirect communication is communicated with the aggregation node, specifically: when cluster head arrives aggregation node
When distance is less than the distance threshold of setting, the mode of the cluster head selection direct communication is communicated with the aggregation node；Work as cluster head
To aggregation node distance not less than setting distance threshold when, the mode and convergence section of cluster head selection indirect communication
Point communication.
In above-mentioned Research on Vehicle Remote Monitoring System Based on GPRS and method, the distance threshold is broadcasted by aggregation node to each biography
Sensor node sets initial distance threshold as LT0；The aggregation node is according to preset period Δ T0Periodically get
Its distance is less than the data of the cluster head of current distance threshold value, and the data include the current remaining of cluster head, the convergence section
Point calculates corresponding current remaining average value Eavg, the aggregation node is according to the data statistics current remaining of acquisition
It is lower thanCluster head quantity Φ1, whenWhen, the aggregation node updates current distance threshold, wherein Φ0For
The quantity of the cluster head for being less than current distance threshold value to its distance, EminFor preset minimum energy value；The current distance
The more new formula of threshold value are as follows:
In formula,It isThe distance threshold of secondary update,It isThe distance threshold of secondary update,
Lavg(k) it is lower than for current remainingCluster head in k-th of cluster head being averaged at a distance from its all neighbours' cluster head
Value, neighbours' cluster head are other cluster heads in cluster head communication range.
In the present embodiment, aggregation node is according to preset period Δ T0It periodically gets its distance and is less than current distance
The data of the cluster head of threshold value carry out the update of distance threshold, enable to converge when the cluster head of plurality is in compared with low energy
More cluster heads of near nodal convert communication pattern as direct communication mode, to reduce script and aggregation node direct communication
Pressure of the cluster head in terms of assisting other cluster heads forwarding data, is further conducive to the phenomenon that avoiding Energy volution, improves wireless
The stability of sensor network operation；The present embodiment further provides the more new formula of distance threshold, and the formula is currently to remain
Complementary energy is lower thanEach cluster head and its all neighbours' cluster head distance average be used as distance increase part, be conducive to
So that updated distance threshold is more suitable, ensure that a certain number of cluster heads are added to the cluster head with aggregation node direct communication
Set.
In one embodiment, each sensor node in the initial Shi Yuqi cluster of cluster head carries out information exchange, constructs in cluster
Sensor node list, and the degree of association with each sensor node in cluster is calculated, by degree of association storage to the cluster inner sensor
Corresponding position in node listing, the calculation formula of the degree of association are as follows:
In formula, VajFor the degree of association of cluster head a and its cluster inner sensor node b, CaFor in cluster head a communication range include cluster head
Sensor node quantity, CbFor the sensor node quantity in the sensor node b communication range including cluster head, L (a, b)
It is cluster head a at a distance from the sensor node b, da,maxAt a distance from sensor node cluster head a farthest with its intra-cluster distance,
α is the preset impact factor intersected based on communication range, and the value range of α is [0.4,0.5], and β is preset based on distance
Impact factor, the value range of β is [0.3,0.4].
When the dump energy of cluster head is lower than EminWhen, cluster head obtains the current remaining letter of each sensor node in its cluster
Breath calculates corresponding the average energy value, and in the sensor node that current remaining is higher than described the average energy value, Xiang Guan
The maximum sensor node of connection degree sends request, so that the maximum sensor node of the degree of association, which becomes, takes over sb.'s job cluster head, and
Oneself transformation role becomes cluster inner sensor node.
The present embodiment proposes a kind of rotation mechanism of cluster head, and where it is proposed the indexs of the degree of association.Cluster in the present embodiment
Head obtains the degree of association with each sensor node in cluster according to the calculation formula of the degree of association in advance, selects for cluster head when energy is too low
It selects and takes over sb.'s job cluster head and provide data basis, improve the efficiency that cluster head is taken over sb.'s job in cluster head selection；When the dump energy of cluster head is lower than pre-
If energy lower limit when, cluster head obtains the current remaining information of each sensor node in its cluster, calculates corresponding average energy
Magnitude, and in the sensor node that current remaining is higher than described the average energy value, to the maximum sensor section of the degree of association
Point sends request, so that the maximum sensor node of the degree of association, which becomes, takes over sb.'s job cluster head, such that take over sb.'s job cluster head preferable
Ground undertakes the role of former cluster head, is conducive to the stability for safeguarding cluster, reduces cluster head rotation and collects bring to car status information
Adverse effect.
In one embodiment, information friendship is carried out with other cluster heads in each neighbours' cluster head, that is, communication range when cluster head is initial
Mutually, the list of neighbours' cluster head is constructed, and calculates the similarity with each neighbours' cluster head, by similarity storage to neighbours' cluster head list
In corresponding position, the calculation formula of the similarity are as follows:
In formula, CajFor the similarity of cluster head a and its neighbours' cluster head j, MaFor neighbours' cluster head quantity of cluster head a, MjIt is described
Neighbours' cluster head quantity of neighbours' cluster head j, Ma∩MjFor neighbours' cluster head quantity that the cluster head a and neighbours' cluster head j is shared, ma
For the sensor node quantity in cluster head a communication range not including cluster head, mjNot include in neighbours' cluster head j communication range
The sensor node quantity of cluster head, ma∩mjIt does not include cluster in the communication range shared for the cluster head a and neighbours' cluster head j
The sensor node quantity of head, h1、h2For preset weight coefficient and h1+h2=1；L (a, j) is the cluster head a and the neighbours
The distance of cluster head j, La,ma6At a distance from the neighbours' cluster head cluster head a farthest with its, α is preset based on communication range intersection
Impact factor, the value range of α is [0.4,0.5], and β is the preset impact factor based on distance, and the value range of β is
[0.3,0.4]；
It is specific to execute when cluster head selects next-hop node:
(1) cluster head using relative to its apart from the closer neighbours' cluster head of aggregation node as both candidate nodes；
(2) sensor node according to setting period Δ T1, periodically determine according to the following formula oneself selection away from
From:
In formula, CHOOCEaFor the selection distance that cluster head a is determined at the σ times, CHOOCEa(σ -1) is cluster head a at σ -1 times
Determining selection distance, Ea0For the primary power of cluster head a, EaFor the current remaining of cluster head a, θ is preset energy consumption
The factor, the value range of θ are [0.4,0.6], RaFor the communication distance of cluster head a；
(3) cluster head is less than in the both candidate nodes of current selection distance to its distance, selects the smallest neighbours of similarity
Cluster head is as next-hop node.
Wherein, the selection distance is less than RaWhen/3, stop the update of selection distance.
The present embodiment proposes the mechanism of cluster head selection next-hop node, wherein according to communication range intersection and distance factor
The calculation formula of node similarity is further provided, which can characterize the Social Relation degree of two cluster heads.The mechanism
In, cluster head using relative to its apart from the closer neighbours' cluster head of aggregation node as the both candidate nodes of next-hop node, ensured vehicle
The directional transmissions of status information to aggregation node；Cluster head is less than in the both candidate nodes of current selection distance to its distance,
It selects the smallest neighbours' cluster head of similarity as next-hop node, cluster head is on the one hand enabled to be selected according to the energy situation of oneself
The next-hop node of suitable distance is selected, support vehicles status information can reliably be forwarded to next-hop node, on the other hand,
It enables to cluster head to select to be associated with little neighbours' cluster head with oneself as far as possible, reduces car status information conflict, improve and send vehicle
Status information to aggregation node efficiency.
It is apparent to those skilled in the art that for convenience and simplicity of description, only with above-mentioned each function
The division progress of module can according to need and for example, in practical application by above-mentioned function distribution by different function moulds
Block is completed, i.e., the internal structure of system is divided into different functional modules, to complete all or part of function described above
Energy.The system of foregoing description and the specific work process of terminal, can refer to corresponding processes in the foregoing method embodiment, herein
It repeats no more.
Through the above description of the embodiments, those skilled in the art can be understood that it should be appreciated that can
To realize the embodiments described herein with hardware, software, firmware, middleware, code or its any appropriate combination.For hardware
It realizes, processor can be realized in one or more the following units: specific integrated circuit, digital signal processor, number letter
Number processing system, field programmable gate array, processor, controller, microcontroller, microprocessor, is set programmable logic device
Count other electronic units or combinations thereof for realizing functions described herein.For software implementations, the part of embodiment or complete
Portion's process can instruct relevant hardware to complete by computer program.When realization, above procedure can be stored in meter
It instructs in calculation machine readable medium or as the one or more on computer-readable medium or code is transmitted.It is computer-readable
Medium includes computer storage media and communication media, and wherein communication media includes convenient for passing from a place to another place
Send any medium of computer program.Storage medium can be any usable medium that computer can access.It is computer-readable
Medium can include but is not limited to random access memory, read-only memory mirror image, band Electrically Erasable Programmable Read-Only Memory or its
His optical disc storage, magnetic disk storage medium or other magnetic-memory systems or it can be used in carrying or storing that there is instruction or number
According to structure type desired program code and can be by any other medium of computer access.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (8)
1. a kind of Research on Vehicle Remote Monitoring System Based on GPRS, characterized in that the system comprises:
Radio sensor network monitoring module, vehicle monitoring center and local device, the radio sensor network monitoring module,
Local device is all connect with the vehicle monitoring center to center communications；
The radio sensor network monitoring module includes single aggregation node, multiple sensor nodes and multiple cluster heads, often
Cluster is added apart from nearest cluster head in a sensor node selection, and the vehicle monitoring center and the aggregation node carry out vehicle shape
The communication of state information；The cluster head is responsible for collecting the car status information of each sensor node acquisition in cluster, and is arrived and converged according to itself
The distance selection direct communication of poly- node or the mode of indirect communication are communicated with the aggregation node；The direct communication is cluster
The car status information of the acquisition of collection is directly sent to the aggregation node by head, and the indirect communication is that cluster head will be received
The car status information of the acquisition of collection is sent to next-hop node, to forward the vehicle shape of the acquisition by next-hop node
State information, until the car status information of the acquisition is sent to aggregation node.
2. a kind of Research on Vehicle Remote Monitoring System Based on GPRS according to claim 1, characterized in that described to arrive aggregation node according to itself
Distance selection direct communication or the mode of indirect communication communicate with the aggregation node, specifically: when cluster head is to converging section
When the distance of point is less than the distance threshold of setting, the mode of the cluster head selection direct communication is communicated with the aggregation node；When
When the distance of cluster head to aggregation node is not less than the distance threshold of setting, the mode and the remittance of the cluster head selection indirect communication
Poly- node communication；The distance threshold broadcasted by aggregation node set to each sensor node initial distance threshold as
LT0；The aggregation node is according to preset period Δ T0It is periodically got apart from the cluster head for being less than current distance threshold value
Data, the data include the current remaining of cluster head, and the aggregation node calculates corresponding current remaining average value
Eavg, the aggregation node is lower than according to the data statistics current remaining of acquisitionCluster head quantity Φ1, whenWhen, the aggregation node updates current distance threshold, wherein Φ0It is less than current distance threshold value to its distance to be described
Cluster head quantity, EminFor preset minimum energy value；The more new formula of the current distance threshold are as follows:
In formula,It isThe distance threshold of secondary update,It isThe distance threshold of secondary update, Lavg(k)
It is lower than for current remainingCluster head in average value of k-th of cluster head at a distance from its all neighbours' cluster head, institute
Stating neighbours' cluster head is other cluster heads in cluster head communication range.
3. a kind of Research on Vehicle Remote Monitoring System Based on GPRS according to claim 2, characterized in that the vehicle monitoring center includes connecing
Receive unit, storage unit, authentication unit, control unit and transmission unit, in which:
Receiving unit is communicated with radio sensor network monitoring module, for connecing from radio sensor network monitoring module
The car status information for receiving each sensor node acquisition, is also used to receive the ID authentication request sent by local device；
Storage unit, for storing the car status information of the acquisition；
Authentication unit, for being verified according to the ID authentication request to the local device；
Control unit, for after authentication unit is proved to be successful the local device, control transmission unit to be set with the local
It is standby to establish communication connection.
4. a kind of Research on Vehicle Remote Monitoring System Based on GPRS according to claim 3, characterized in that the authentication unit is to described
After ground equipment is proved to be successful, the authentication unit is also used to:
The number that the local device sends ID authentication request is detected, when the number for sending ID authentication request is greater than default threshold
When value, refusal establishes connection with the local device.
5. a kind of Research on Vehicle Remote Monitoring System Based on GPRS according to claim 3, characterized in that the authentication unit is to described
After ground equipment is proved to be successful, described control unit responds the access request of local device, controls the transmission unit and mentions
The local device is given for the operation interface of the data of storage；
Described control unit responds operation of the local device based on the operation interface.
6. a kind of Research on Vehicle Remote Monitoring System Based on GPRS according to claim 3, characterized in that the vehicle monitoring center further includes
Comparing unit, the comparing unit is for comparing the car status information of the acquisition with corresponding preset threshold range
Compared with when car status information exceeds corresponding preset threshold range, described control unit controls the transmission unit to described
Local device sends warning message.
7. a kind of remote vehicle monitoring method applied to such as described in any item Research on Vehicle Remote Monitoring System Based on GPRS of claim 2-6,
It is characterized in that this method comprises:
Vehicle monitoring center receives and stores the vehicle shape of each sensor node acquisition from radio sensor network monitoring module
State information；
The vehicle monitoring center receives the ID authentication request sent by local device；
The local device is verified according to the ID authentication request at the vehicle monitoring center；
The vehicle monitoring center is established with the local device and is communicated to connect after being proved to be successful to the local device；
The access request for the local device that the vehicle monitoring center response establishes communication, provides the operation of the data of storage
Interface is to the local device established communication.
8. a kind of remote vehicle monitoring method according to claim 7, this method further include:
The car status information of the acquisition is compared by the vehicle monitoring center with corresponding preset threshold range, in vehicle
When status information exceeds corresponding preset threshold range, warning message is sent to the local device for establishing communication connection.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110189452A (en) * | 2019-06-06 | 2019-08-30 | 广州小鹏汽车科技有限公司 | Access processing method, device, system and the vehicle of car key |
| CN110557799A (en) * | 2019-09-26 | 2019-12-10 | 中南大学 | Data acquisition method based on mobile vehicle in smart city edge network |
| CN111800753A (en) * | 2020-07-07 | 2020-10-20 | 北京赋云安运营科技有限公司 | Safety precaution analysis alarm system and method based on artificial intelligence |
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2018
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110189452A (en) * | 2019-06-06 | 2019-08-30 | 广州小鹏汽车科技有限公司 | Access processing method, device, system and the vehicle of car key |
| CN110557799A (en) * | 2019-09-26 | 2019-12-10 | 中南大学 | Data acquisition method based on mobile vehicle in smart city edge network |
| CN111800753A (en) * | 2020-07-07 | 2020-10-20 | 北京赋云安运营科技有限公司 | Safety precaution analysis alarm system and method based on artificial intelligence |
| CN111800753B (en) * | 2020-07-07 | 2023-05-09 | 安全能力生态聚合(北京)运营科技有限公司 | Safety precaution analysis alarm system and method based on artificial intelligence |
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