CN109099967A - A kind of intelligent monitor system of Table Grape Cold Chain Logistics - Google Patents
A kind of intelligent monitor system of Table Grape Cold Chain Logistics Download PDFInfo
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- CN109099967A CN109099967A CN201810823731.4A CN201810823731A CN109099967A CN 109099967 A CN109099967 A CN 109099967A CN 201810823731 A CN201810823731 A CN 201810823731A CN 109099967 A CN109099967 A CN 109099967A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The present invention provides a kind of intelligent monitor system of Table Grape Cold Chain Logistics, which includes data acquisition device and monitor terminal；Data acquisition device is configured as the environmental information in acquisition Table Grape cold chain packaging, the environmental information includes temperature and humidity information, data acquisition device includes base station and multiple sensor nodes, sensor node acquires the environmental information in monitored Table Grape cold chain packaging, base station is generally configured to converge the environmental information of each sensor node acquisition, and is sent to the monitor terminal and is stored and shown.
Description
Technical field
The present invention relates to Cold Chain Logistics monitoring technical fields, and in particular to a kind of intelligent monitoring of Table Grape Cold Chain Logistics
System.
Background technique
Table Grape has the biological nature of fresh and tender perishable easy aging, is circulation difficulty and very risky fresh goods,
The fresh and alive degree of Table Grape determines its utility value and economic value.In order to ensure food Fresh-grape Quality safety, object
Cold chain technology is mostly used during stream, by adjusting the environment such as temperature, relative humidity in logistics progress, it is ensured that Table Grape is complete
Journey is in suitable cold storage environment.With the development of hyundai electronics information and intelligence communication technology, Table Grape Cold Chain Logistics ring
Gradually diversification and the intelligence of the information collection parameter in border.
But the complicated multiplicity of Table Grape Cold Chain Logistics environment, traditional information collection mostly use Static Inquiry, temperature at present
, easily there is information collection not in time in the information collections modes such as the offline record of degree, environmental disturbances acquire the problems such as energy consumption is high.Therefore,
Traditional Table Grape Cold Chain Logistics transit information acquisition system and method increasingly cannot be very during practical Cold Chain Logistics
Its function is played well.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of intelligent monitor system of Table Grape Cold Chain Logistics.
The purpose of the present invention is realized using following technical scheme:
A kind of intelligent monitor system of Table Grape Cold Chain Logistics is provided, which includes data acquisition device and monitoring
Terminal；Data acquisition device is configured as the environmental information in acquisition Table Grape cold chain packaging, which includes temperature
And humidity information, data acquisition device include base station and multiple sensor nodes, sensor node acquires monitored fresh food Portugal
Environmental information in grape cold chain packaging, base station is generally configured to converge the environmental information of each sensor node acquisition, and sends
It is stored and is shown to the monitor terminal.
In one embodiment, the sensor node includes temperature sensor and humidity sensor.
In one embodiment, the monitor terminal includes the environment letter for being configured as storing each sensor node acquisition
The storage unit of breath, and be configured as showing the display unit of the environmental information of each sensor node acquisition.
Further, the monitor terminal further includes prewarning unit, is configured as analyzing environmental information, in environment
Information exports warning message when not meeting the threshold condition of setting.
The invention has the benefit that by acquire and forward in real time temperature in the packagings of Table Grape Cold Chain Logistics and
Humidity information, can the temperature and humidity information in the packaging to Table Grape Cold Chain Logistics carry out real-time monitoring, solve biography
The problem of system monitoring device cannot grasp environment Parameters variation in Table Grape Cold Chain Logistics comprehensively in real time.
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 representation of the intelligent monitor system of the Table Grape Cold Chain Logistics of an illustrative embodiment of the invention
Block diagram；
Fig. 2 is the structural schematic block diagram of the monitor terminal of an illustrative embodiment of the invention.
Appended drawing reference:
Data acquisition device 1, monitor terminal 2, storage unit 10, display unit 20, prewarning unit 30.
Specific embodiment
The invention will be further described with the following Examples.
Referring to Fig. 1, the embodiment of the invention provides a kind of intelligent monitor system of Table Grape Cold Chain Logistics, the system packets
Include data acquisition device 1 and monitor terminal 2；Data acquisition device 1 is configured as the environment in acquisition Table Grape cold chain packaging
Information, the environmental information include temperature and humidity information, and data acquisition device 1 includes base station and multiple sensor nodes, sensing
Device node acquires the environmental information in monitored Table Grape cold chain packaging, and base station is generally configured to converge each sensor section
The environmental information of point acquisition, and be sent to the monitor terminal 2 and stored and shown.
Wherein, leader cluster node is selected when constructing network topology from sensor node and carries out sub-clustering；Leader cluster node quilt
It is configured to summarize the environmental information that cluster inner sensor node acquires and is sent to base station；The distance between cluster head and base station do not surpass
When crossing preset first distance threshold value, cluster head is directly and base station communication；The distance between cluster head and base station are more than preset first
When distance threshold, environmental information is sent to base station by way of multihop routing by cluster head；If each sensor node and cluster in cluster
Head distance is no more than the second communication distance threshold value of setting, then directly communicates with cluster head；If being more than the of setting with cluster head distance
Two communication distance threshold values, sensor node select a neighbor node as next-hop in the neighbor node in same cluster.This reality
It applies example and sets communication routing mechanism between sensor node and leader cluster node, in the communication routing mechanism, pass through distance and determine
Sensor node whether with leader cluster node direct communication, send out reliable and stablely by the environmental information that can ensure that sensor node acquires
It send to leader cluster node.
In one embodiment, the sensor node includes temperature sensor and humidity sensor.
In one embodiment, as shown in Fig. 2, the monitor terminal 2 includes being configured as storing each sensor node
The storage unit 10 of the environmental information of acquisition, and be configured as showing the display list of the environmental information of each sensor node acquisition
Member 20.
Further, the monitor terminal 2 further includes prewarning unit 30, is configured as analyzing environmental information,
Environmental information exports warning message when not meeting the threshold condition of setting.The wherein setting of threshold condition, can be according to practical feelings
Condition is configured.In one embodiment, different level threshold values can be set for varying environment information, when environmental information is super
Out corresponding level threshold value determine the environmental information for exception, and then export warning message.Wherein, which may include different
Normal environmental information, and/or the position that abnormal environmental information generates.
The above embodiment of the present invention, which passes through, acquires in real time and forwards temperature in the packagings of Table Grape Cold Chain Logistics and wet
Spend information, can the temperature and humidity information in the packaging to Table Grape Cold Chain Logistics carry out real-time monitoring, solve tradition
Monitoring device cannot grasp the problem of environment Parameters variation in Table Grape Cold Chain Logistics comprehensively in real time.
In one embodiment, cluster head and sub-clustering are selected from sensor node according to LEACC agreement.
In another embodiment, LEACC agreement is improved, according to improved LEACC agreement from sensor node
In select cluster head and sub-clustering, the improved LEACC agreement specifically includes:
(1) in the collection network of base station each sensor node i node degree Vi, according to the node degree of each sensor node
Determine maximum node degree Vmax, minimum node degree Vmin, and calculate node degree summation ΔV；
(2) sensor node is calculated according to the following formula correspond to threshold value:
In formula, QiIndicating that sensor node i corresponds to threshold value, G indicates sensor node number in smart sensor's network,Indicate the cluster head number for it is expected to generate in every wheel, Ci=1 indicates at thisSensor node i was not elected to cluster head, C in wheeli=0 indicates at thisSensor node i had been elected to cluster head, C in wheeliIn every process1 is initialized as when wheel；D is election wheel number,
Indicate election wheel number in this circulation, It indicates
It was elected to the sensor node number of cluster head in this circulation；
In the establishment stage for the cluster that every wheel starts, sensor node generates a random number between 0 to 1, if
The random number that sensor node i is generated is less than Qi, then sensor node i is elected as interim cluster head, is otherwise ordinary node；
(3) interim sub-clustering is carried out to sensor node in network, each interim cluster head can broadcast oneself as cluster to the whole network
The broadcast message of head, the sensor node selection interim cluster head nearest apart from oneself, which is sent, is added information；
(4) interim cluster head by the node degree of oneself be sent to it the node degree that a hop neighbor node of information is added
It is compared, the node degree of a hop neighbor node is greater than oneself the node degree if it exists, and interim cluster head one is jumped to this
Neighbor node, which is sent, transfers the possession of cluster head information, receives the hop neighbor node for transferring the possession of cluster head information as final cluster head；
(5) after final cluster head determines, a broadcast is sent in cluster and informs the new cluster head information of all the sensors node,
Sensor node completes sub-clustering according to new cluster head information, and network enters stable data communication phase；
(6) after data communication phase, network enters back into wheel cluster head selection, sub-clustering and data communication.
Cluster head number will excessively directly influence the time of environmental information collection, so that the environment of Table Grape Cold Chain Logistics
Information is collected time delay and is increased.
Based on the above issues, the present embodiment improves existing LEACC agreement, and is based on improved LEACC agreement from biography
Cluster head and sub-clustering are selected in sensor node.Wherein, by corresponding in threshold value in calculating sensor node in view of node degree
Factor, so that the selection biggish sensor node of node degree as far as possible serves as interim cluster head when building cluster；By to randomly selecting
Interim cluster head be adjusted, when adjustment, will be compared between interim cluster head and the node degree of one hop neighbor node, select
It takes node degree is maximum to be used as final cluster head, is conducive to the selection maximum sensor node of node degree as much as possible and serves as cluster
Head, to reduce cluster head number as far as possible, to can be effectively reduced Table Grape cold chain relative to existing LEACC agreement
The environmental information acquisition time of logistics reduces environmental information and collects time delay, to improve the intelligence prison of Table Grape Cold Chain Logistics
The operational efficiency of control system.
In the mode that one kind can be implemented, sensor node selects a neighbor node in the neighbor node in same cluster
As next-hop, specifically include:
(1) sensor node filters out alternative communication node in the neighbor node in same cluster, is included into alternative communication node
Set, wherein setting screening conditions are as follows:
Bij>Bmin,Wi,o>Wij,o
In formula, BijIt is sensor node i with the current remaining of j-th of neighbor node in cluster, BminFor preset energy
Measure lower limit, Wi,oFor sensor node i to the distance of corresponding cluster head, Wij,oFor j-th of neighbor node correspondence cluster head away from
From；
(2) sensor node calculates the communication connection probability of itself and each alternative communication node, and in alternative communication section point set
Select the alternative communication node of communication connection maximum probability as next-hop in conjunction；Wherein, if RiaIt is standby with it for sensor node i
The communication connection probability of a-th of alternative communication node, R in gating letter node setiaCalculation formula are as follows:
In formula, ViFor the node degree of sensor node i, ViaFor the node degree of described a-th alternative communication node, Vib
For the node degree of b-th of alternative communication node in the alternative communication node set of sensor node i, BiaIt is standby for described a-th
Select the current remaining of communication node, BminFor the preset energy lower limit, Bia0For described a-th alternative communication node
Primary power, e are the bottom of natural logrithm.
Wherein, the neighbor node of sensor node i is the other sensors section in sensor node i communication range
Point.
The present embodiment sets the screening conditions of alternative communication node, so that being more than that second set communicates with cluster head distance
Sensor node when distance threshold can be avoided selection apart from cluster head farther out and energy is insufficient next when selecting next-hop
It jumps.The present embodiment further innovatively sets the calculation formula of communication connection probability, the communication connection of alternative communication node
Probability is bigger, indicates that the energy of alternative communication node is more sufficient, and environmental information is transferred to alternative communication section by sensor node
The interference for other neighbor nodes being subject to when point is smaller.In the present embodiment, sensor node selects in alternative communication node set
The alternative communication node of communication connection maximum probability is selected as next-hop, is beneficial to improve sensor node and its next hop link
Reliability, thus ensure Table Grape Cold Chain Logistics environmental information stablize transmission.
In one embodiment, when the distance between cluster head and base station are more than preset first distance threshold value, cluster head is by phase
For oneself apart from the closer neighbours' cluster head in base station alternately cluster head, and it is included into alternative cluster head set, cluster head is in the standby of oneself
It selects and selects the maximum alternative cluster head of preferred value as next-hop in cluster head set:
In formula, EαβIndicate the preferred value of β alternative cluster heads in the alternative cluster head set of cluster head α, RαβIndicate cluster head α with
The communication connection probability of the β alternative cluster heads, UαβIt (t) is the spatial cache of the β described in current time t alternative cluster heads
In environmental information packet queue length, Uαβ,0For the initial cache size of the β alternative cluster heads；y1、y2For the weight of setting
Coefficient.
The present embodiment is based on remaining cache space and communication connection probability factor, creatively sets the calculating of preferred value
Formula, and cluster head is accordingly proposed to the communication routing mechanism of base station, in the routing mechanism, the distance between cluster head and base station are super
When crossing preset first distance threshold value, cluster head selects the maximum neighbours' cluster head of preferred value as next-hop, is conducive to balance as far as possible
The load of each cluster head, and further increase the reliability of the environmental information transmission of Table Grape Cold Chain Logistics, so as to it is reliable,
Grasp environment Parameters variation in Table Grape Cold Chain Logistics comprehensively in real time.
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 (6)
1. a kind of intelligent monitor system of Table Grape Cold Chain Logistics, characterized in that including data acquisition device and monitor terminal；
Data acquisition device is configured as the environmental information in acquisition Table Grape cold chain packaging, which includes temperature and humidity
Information, data acquisition device include base station and multiple sensor nodes, and sensor node acquires monitored Table Grape cold chain
Environmental information in packaging, base station is generally configured to converge the environmental information of each sensor node acquisition, and is sent to described
Monitor terminal is stored and is shown；Leader cluster node is selected when constructing network topology from sensor node and carries out sub-clustering；
Leader cluster node is configured as summarizing the environmental information that cluster inner sensor node acquires and is sent to base station；Between cluster head and base station
Distance when being less than preset first distance threshold value, cluster head is directly and base station communication；The distance between cluster head and base station are more than
When preset first distance threshold value, environmental information is sent to base station by way of multihop routing by cluster head；Each sensor in cluster
If node is no more than the second communication distance threshold value of setting with cluster head distance, directly communicated with cluster head；If super with cluster head distance
The second communication distance threshold value of setting is crossed, sensor node selects a neighbor node as under in the neighbor node in same cluster
One jumps.
2. a kind of intelligent monitor system of Table Grape Cold Chain Logistics according to claim 1, characterized in that the sensing
Device node includes temperature sensor and humidity sensor.
3. a kind of intelligent monitor system of Table Grape Cold Chain Logistics according to claim 1, characterized in that the monitoring
Terminal includes the storage unit for being configured as storing the environmental information of each sensor node acquisition, and is configured as showing each biography
The display unit of the environmental information of sensor node acquisition.
4. a kind of intelligent monitor system of Table Grape Cold Chain Logistics according to claim 3, characterized in that the monitoring
Terminal further includes prewarning unit, is configured as analyzing environmental information, does not meet the threshold condition of setting in environmental information
When export warning message.
5. a kind of intelligent monitor system of Table Grape Cold Chain Logistics according to claim 1, characterized in that according to
LEACC agreement selects cluster head and sub-clustering from sensor node.
6. a kind of intelligent monitor system of Table Grape Cold Chain Logistics according to claim 1, characterized in that LEACC
Agreement improves, and cluster head and sub-clustering are selected from sensor node according to improved LEACC agreement, described improved
LEACC agreement specifically includes:
(1) in the collection network of base station each sensor node i node degree Vi, determined according to the node degree of each sensor node
Maximum node degree Vmax, minimum node degree Vmin, and calculate node degree summation ΔV；
(2) sensor node is calculated according to the following formula correspond to threshold value:
In formula, QiIndicating that sensor node i corresponds to threshold value, G indicates sensor node number in smart sensor's network,Indicate the cluster head number for it is expected to generate in every wheel, Ci=1 indicates at thisSensor node i was not elected to cluster head, C in wheeli=0 indicates at thisSensor node i had been elected to cluster head, C in wheeliIn every process1 is initialized as when wheel；D is election wheel number,Indicate election wheel number in this circulation, Indicate the sensor node number for being elected to cluster head in this circulation；
In the establishment stage for the cluster that every wheel starts, sensor node generates a random number between 0 to 1, if sensing
The random number that device node i generates is less than Qi, then sensor node i is elected as interim cluster head, is otherwise ordinary node；
(3) interim sub-clustering is carried out to sensor node in network, each interim cluster head can broadcast oneself as cluster head to the whole network
Broadcast message, the sensor node selection interim cluster head nearest apart from oneself, which is sent, is added information；
(4) interim cluster head carries out the node degree of oneself with the node degree that a hop neighbor node of information is added is sent to it
Compare, the node degree of a hop neighbor node is greater than oneself the node degree if it exists, and interim cluster head is to a hop neighbor
Node, which is sent, transfers the possession of cluster head information, receives the hop neighbor node for transferring the possession of cluster head information as final cluster head；
(5) after final cluster head determines, a broadcast is sent in cluster and informs the new cluster head information of all the sensors node, sensing
Device node completes sub-clustering according to new cluster head information, and network enters stable data communication phase；
(6) after data communication phase, network enters back into wheel cluster head selection, sub-clustering and data communication.
Cluster head number will excessively directly influence the time of environmental information collection, so that the environmental information of Table Grape Cold Chain Logistics
Time delay is collected to increase.
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