CN113098642B - Logistics management method based on Beidou satellite positioning technology - Google Patents
Logistics management method based on Beidou satellite positioning technology Download PDFInfo
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- CN113098642B CN113098642B CN202110435441.4A CN202110435441A CN113098642B CN 113098642 B CN113098642 B CN 113098642B CN 202110435441 A CN202110435441 A CN 202110435441A CN 113098642 B CN113098642 B CN 113098642B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
- G06Q10/083—Shipping
- G06Q10/0833—Tracking
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y10/00—Economic sectors
- G16Y10/40—Transportation
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y20/00—Information sensed or collected by the things
- G16Y20/10—Information sensed or collected by the things relating to the environment, e.g. temperature; relating to location
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y40/00—IoT characterised by the purpose of the information processing
- G16Y40/10—Detection; Monitoring
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y40/00—IoT characterised by the purpose of the information processing
- G16Y40/60—Positioning; Navigation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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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
- H04W4/02—Services making use of location information
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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]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention relates to a logistics management method based on Beidou satellite positioning technology, which comprises the steps that a logistics management side builds a cargo bearing relation list in advance, so that when an external cargo inquiry instruction is received, the logistics management side compares and judges cargo information with the cargo bearing relation list to determine a specific logistics vehicle for transporting cargoes to be monitored, then the cargoes to be monitored are sent to a corresponding logistics vehicle in transportation, then after the logistics vehicle detects an optimal idle communication frequency band where the cargoes are located, the logistics vehicle sends video monitoring data aiming at the cargoes to be monitored and real-time position information of the real-time position information to a logistics management side located at a far end through the current optimal idle communication frequency band, and therefore, when the logistics vehicle encounters a shortage of the communication frequency band, the logistics vehicle can timely send monitoring video data to the logistics management side at the far end, and logistics monitoring efficiency and management efficiency are improved.
Description
Technical Field
The invention relates to the field of logistics management, in particular to a logistics management method based on Beidou satellite positioning technology.
Background
In the current domestic logistics industry, a logistics company can install a Beidou system on each logistics vehicle which is managed by the company and is responsible for cargo transportation according to supervision and self management requirements, so that the monitoring requirements of the logistics vehicles during transportation are met, for example, real-time positioning and track monitoring of the logistics vehicles are realized, and safe transportation of the logistics vehicles and safety of cargoes are ensured.
In logistics transportation, once a logistics vehicle runs to a mountain area, because of the special geographical environment of the mountain area, communication base stations arranged in the mountain area are fewer, the full coverage of communication signals in the mountain area is basically difficult to ensure, the quality of the communication signals in the mountain area is poor, and signal discontinuity usually occurs. In case of emergency situations such as debris flow, earthquakes and the like, the terminal equipment held by various users in the mountain area almost generates the requirement of communication with the outside at the same moment or in the same time period, so that blowout type increase of the idle frequency band requirement in the mountain area is caused, the originally shortage frequency band resource in the mountain area is difficult to meet the communication requirement of a logistics vehicle which is in charge of emergency transportation and a logistics company management party and is driven in the mountain area, and then the management requirement of the logistics company on the logistics vehicle and goods is not met.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a logistics management method based on Beidou satellite positioning technology aiming at the prior art.
The technical scheme adopted for solving the technical problems is as follows: the logistics management method based on the Beidou satellite positioning technology is characterized by comprising the following steps of 1-8:
step 1, a cargo bearing relation list between each cargo and a logistics vehicle bearing each cargo is constructed in advance; wherein each cargo corresponds to a logistics vehicle carrying the cargo;
step 2, judging according to the acquired real-time position query request of the goods:
when the goods are in the constructed goods bearing relation list, turning to step 3; otherwise, feeding back prompt information that the goods are not queried to a sender of the real-time position query request of the goods;
step 3, inquiring in the constructed cargo bearing relation list to obtain a logistics vehicle corresponding to the cargo;
step 4, sending a real-time positioning information inquiry command to the inquired logistics vehicle;
step 5, the logistics vehicle which receives the real-time positioning query instruction detects the optimal idle communication frequency band in the communication environment where the current real-time position is located;
step 6, the logistics vehicle makes judgment processing according to the detection result aiming at the current optimal idle communication frequency band:
when the optimal idle communication frequency band is detected, the step 7 is carried out; otherwise, go to step 8;
step 7, the logistics vehicle acquires the real-time positioning information of the current position, processes the real-time positioning information, and then sends the processed real-time positioning information to a sender sending the real-time positioning information inquiry instruction through the optimal idle communication frequency band;
and 8, the logistics vehicle takes the communication frequency band which is being used before the logistics vehicle receives the real-time positioning inquiry command as an idle communication frequency band, and sends the acquired real-time positioning information aiming at the current position to a sender which sends the real-time positioning information inquiry command.
In the logistics management method based on the Beidou satellite positioning technology, in step 5, the process of selecting the optimal idle communication frequency band by the logistics vehicle comprises the following steps:
step 51, the logistics vehicle acquires a primary selected idle communication frequency band in a communication environment where a current real-time position is located according to a preset detection frequency in a preset time period; wherein the total number of logistics vehicles in the cargo bearing relation list is marked as M, and the mth logistics vehicle is marked as Car m M is more than or equal to 1 and less than or equal to M; the preset time period is marked as T, the preset detection frequency is marked as f, and the logistics vehicle Car m The total number of the initially selected idle communication frequency bands detected in the preset time period T is marked as
Logistics vehicle Car m The detected nth initially selected idle communication band is marked +.>
1≤n≤N；
Step 52, the logistics vehicles respectively collect the collection time corresponding to each primary selected idle communication frequency band, and collectCollecting signal-to-noise ratio and power consumption values corresponding to all the collection moments of the logistics vehicle; wherein, the nth initially selected idle communication frequency band
The corresponding acquisition time is marked as +.>
Logistics vehicle Car m At the time of acquisition +.>
The corresponding signal-to-noise ratio and power consumption values are respectively labeled +.>
And->
And step 53, the logistics vehicle processes according to all the detected initially selected idle communication frequency bands, signal to noise ratio and power consumption values to obtain the optimal idle communication frequency band. In the invention, the logistics vehicle processes according to all detected primary selected idle communication frequency bands, signal to noise ratio and power consumption values, and the process of obtaining the optimal idle communication frequency band comprises the following steps S1-S5:
step S1, the logistics vehicle calculates power consumption efficiency indexes of the acquisition time corresponding to each primary selected idle communication frequency band respectively aiming at each primary selected idle communication frequency band; wherein, the idle communication frequency band is initially selected
Corresponding acquisition time +.>
The power consumption efficiency index of (2) is marked +.>
Step S2, the logistics vehicle performs normalization processing on all the calculated power consumption efficiency indexes to obtain normalized power consumption efficiency indexes of the acquisition time corresponding to each primary selected idle communication frequency band; wherein, the idle communication frequency band is initially selected
Corresponding acquisition time +.>
The normalized power consumption efficiency index of (2) is marked +.>
Step S3, the logistics vehicle calculates normalized detection performance indexes of the acquisition time corresponding to each primary selected idle communication frequency band according to all the acquired signal-to-noise ratios; wherein, the idle communication frequency band is initially selected
Corresponding acquisition time +.>
The normalized detection Performance index of (2) is marked as +.>
/>
Step S4, the logistics vehicle obtains each normalized power consumption efficiency index according to the obtained power consumption efficiency indexesThe normalized detection performance indexes corresponding to the acquisition time are respectively and correspondingly obtained the idle communication frequency band detection trust index corresponding to each primary selected idle communication frequency band; wherein, the idle communication frequency band is initially selected
The corresponding idle communication frequency band detection trust index is marked as
And S5, the logistics vehicle takes the initially selected idle communication frequency band corresponding to the maximum idle communication frequency band detection trust index as the optimal idle communication frequency band.
In the invention, the logistics management method based on the Beidou satellite positioning technology further comprises the following steps:
step a1, a logistics management side sends a cargo state monitoring instruction to a logistics vehicle corresponding to the cargo;
step a2, the logistics vehicle which receives the cargo state monitoring instruction collects video information data of the cargo;
step a3, the logistics vehicle makes a judgment according to the collected video information data:
when the data volume of the video information data is larger than a preset data volume threshold value, a step a4 is carried out; otherwise, the logistics vehicle sends the video information data to a logistics management party through the optimal idle communication frequency band;
step a4, the logistics vehicle sequentially cuts the video information data into a plurality of video segments according to the front-back sequence of the frames, assigns a corresponding segment number to each video segment, and then goes to step a5; wherein the number of the previous video segment is smaller than the number of the next video segment;
step a5, the logistics vehicle detects the optimal idle communication frequency band in the communication environment where the current moment is located before transmitting each video segment, and transmits each video segment to be transmitted to a logistics management side through the optimal idle communication frequency band detected at the latest moment; the detection mode of the optimal idle communication frequency band in the step a5 is the same as the detection mode of the optimal idle communication frequency band in the step 5.
In order to meet the requirement that a plurality of logistics vehicles transport different large amounts of cargoes to a cargo yard, so as to achieve the acquisition and management of video monitoring information of each cargo by a logistics management party, and further improve, the logistics management method based on the Beidou satellite positioning technology, provided by the invention, further comprises the following steps:
step b1, when a plurality of logistics vehicles drive into a goods yard in a team mode, each logistics vehicle respectively sends team transportation information to a logistics management party;
step b2, the logistics management side respectively sends cargo state monitoring instructions aiming at cargoes to be monitored to each logistics vehicle in team transportation;
step b3, each logistics vehicle judges whether the goods to be monitored corresponding to the goods state monitoring instruction are transported by the logistics vehicle or not:
when the logistics vehicle does not transport the goods to be monitored currently, the logistics vehicle detects an idle communication frequency band in a communication environment where the current moment is located and a signal-to-noise ratio when the logistics vehicle sends a signal, and the step b4 is shifted; otherwise, the logistics vehicle collects video monitoring data of the goods to be monitored, detects an idle communication frequency band in a communication environment at the current moment, and shifts to a step b7;
step b4, processing according to idle communication frequency bands detected by all logistics vehicles in team transportation:
when the coincident idle communication frequency bands exist, marking each coincident idle communication frequency band as a quasi-selected idle communication frequency band, and turning to the step b5; otherwise, go to step b6;
step b5, calculating the detected times of each idle communication frequency band to be selected, selecting the idle communication frequency band to be selected with the largest detected times as a preferable idle communication frequency band aiming at the cargo yard environment where the current moment is located, and sending the preferable idle communication frequency band to each logistics vehicle in team transportation, wherein each logistics vehicle in team transportation uses the preferable idle communication frequency band as the communication frequency band when the logistics vehicle in team transportation communicates with the outside at the current moment;
step b6, selecting an idle communication frequency band detected by the logistics vehicles with the maximum signal-to-noise ratio as a preferable idle communication frequency band aiming at the environment of the cargo yard where the current moment is located, transmitting the preferable idle communication frequency band to each logistics vehicle in team transportation, and taking the preferable idle communication frequency band as a communication frequency band when the logistics vehicles in team transportation communicate with the outside at the current moment;
and b7, the logistics vehicle transmits the video monitoring data to the logistics management party by utilizing the idle communication frequency band detected at the current moment of the logistics vehicle.
Compared with the prior art, the invention has the advantages that: according to the invention, a cargo bearing relation list is constructed in advance by a logistics management party, so that when the logistics management party receives an external cargo inquiry command, the logistics management party determines a specific logistics vehicle for transporting cargoes to be monitored by comparing cargo information with the cargo bearing relation list, then the logistics management party sends the cargoes to be monitored to a corresponding logistics vehicle in transportation, and then after the logistics vehicle detects an optimal idle communication frequency band of the position of the logistics vehicle, the logistics vehicle sends video monitoring data aiming at the cargoes to be monitored and real-time position information of the real-time position information to the logistics management party at a far end through the current optimal idle communication frequency band. In addition, when the logistics vehicle faces to the transmission of the monitoring video data occupying larger data volume, the invention also sets the fragmentation processing of the corresponding monitoring video with large data volume by the logistics vehicle to cut into a plurality of video segments with small data volume numbered according to the sequence of the video frames, and before each video segment with small data volume is transmitted outwards, the logistics vehicle can firstly detect the optimal idle communication frequency band at the position of the logistics vehicle so as to ensure that each video segment is sent outwards by the logistics vehicle by utilizing the optimal idle communication frequency band at the different positions of the logistics vehicle, under the condition of neglecting power consumption, the requirement on the transmission of the monitoring video data is preferentially met, thus the transmission efficiency of the monitoring video data with large data volume is improved, and the occurrence of partial video segment missing caused by the shortage of the communication frequency band is avoided.
Drawings
Fig. 1 is a flow chart of a logistics management method based on the Beidou satellite positioning technology in the embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
The embodiment provides a logistics management method based on Beidou satellite positioning technology, which is suitable for positioning cargoes in the logistics transportation process, and is particularly suitable for positioning and managing logistics vehicles running in mountain areas. Specifically, referring to fig. 1, the logistics management method based on the Beidou satellite positioning technology in this embodiment includes the following steps 1 to 8:
step 1, a logistics company management side builds a goods bearing relation list between each goods and logistics vehicles bearing each goods in advance; wherein, each goods corresponds to a logistics vehicle carrying the goods, each logistics vehicle is provided with a Beidou positioning system and a spectrum sensing device, and the spectrum sensing device is in the prior art and is not described herein;
step 2, the logistics company management side makes judgment processing according to the acquired real-time cargo position query request:
when the goods are in the constructed goods bearing relation list, indicating that the goods are transported by the logistics vehicles of the logistics company, and then turning to step 3; otherwise, the logistic company management side feeds back prompt information that the goods are not inquired to be carried to the sender of the real-time position inquiry request of the goods;
step 3, the logistics company management side inquires in the constructed goods bearing relation list to obtain a logistics vehicle corresponding to the goods; the logistics company management party can inquire the logistics vehicle information which is specifically responsible for carrying according to the corresponding relation between the goods and the logistics vehicles;
step 4, the management side of the logistics company sends a real-time positioning information inquiry command to the inquired logistics vehicle;
step 5, the logistics vehicle which receives the real-time positioning query instruction detects the optimal idle communication frequency band in the communication environment where the current real-time position is located; wherein, the process of selecting the optimal idle communication frequency band by the logistics vehicle comprises the following steps 51-53:
step 51, the logistics vehicle acquires a primary selected idle communication frequency band in a communication environment where a current real-time position is located according to a preset detection frequency in a preset time period; wherein the total number of logistics vehicles in the cargo bearing relation list is marked as M, and the mth logistics vehicle is marked as Car m M is more than or equal to 1 and less than or equal to M; the preset time period is marked as T, the preset detection frequency is marked as f, and the logistics vehicle Car m The total number of the initially selected idle communication frequency bands detected in the preset time period T is marked as
Logistics vehicle Car m The detected nth initially selected idle communication band is marked +.>
N is more than or equal to 1 and less than or equal to N; the ratio between the preset time period T and the preset detection frequency f is a positive integer;
step 52, the logistics vehicle respectively collects the collection time corresponding to each primary selected idle communication frequency band, and collects the signal-to-noise ratio and the power consumption value corresponding to each collection time of the logistics vehicle; wherein, the nth initially selected idle communication frequency band
The corresponding acquisition time is marked as +.>
Logistics vehicle Car m At the time of acquisition +.>
The corresponding signal-to-noise ratio and power consumption values are respectively labeled +.>
And->
Step 53, the logistics vehicle processes according to all detected primary selected idle communication frequency bands, signal to noise ratio and power consumption values to obtain an optimal idle communication frequency band; specifically, in this embodiment, the logistic vehicle processes according to all detected initially selected idle communication frequency bands, signal to noise ratio and power consumption values, and the process of obtaining the optimal idle communication frequency band includes the following steps S1 to S5:
step S1, logistics vehicle Car m Aiming at each primary selected idle communication frequency band, respectively calculating the power consumption efficiency index of the acquisition time corresponding to each primary selected idle communication frequency band; wherein, the idle communication frequency band is initially selected
Corresponding acquisition time +.>
The power consumption efficiency index of (2) is marked +.>
Step S2, logistics vehicle Car m Normalizing all the calculated power consumption efficiency indexes to obtain normalized power consumption efficiency indexes of the acquisition time corresponding to each primary selected idle communication frequency band; wherein, the idle communication frequency band is initially selected
Corresponding acquisition time +.>
The normalized power consumption efficiency index of (2) is marked +.>
Step S3, the logistics vehicle calculates the normalized detection performance index of each primary selected idle communication frequency band at the corresponding acquisition time according to all the acquired signal-to-noise ratios; wherein, the idle communication frequency band is initially selected
Corresponding acquisition time +.>
The normalized detection Performance index of (2) is marked as +.>
Step S4, the logistics vehicle calculates each normalized power consumption efficiency index according to the obtained power consumption efficiency indexes
And normalized detection performance index corresponding to the acquisition time>
Respectively and correspondingly obtaining an idle communication frequency band detection trust index corresponding to each primary selected idle communication frequency band; wherein, the primary selection of the idle communication frequency band is->
The corresponding idle communication frequency band detection trust index is marked as +.>
S5, the logistics vehicle takes the primary selected idle communication frequency band corresponding to the maximum idle communication frequency band detection trust index as the optimal idle communication frequency band; the method comprises the steps of aiming at each logistics vehicle, calculating the power consumption efficiency condition required by each initially selected idle communication frequency band detected by each logistics vehicle and the detection performance achieved under the power consumption efficiency, and then calculating the ratio between the normalized detection performance index corresponding to each initially selected idle communication frequency band and the normalized power consumption efficiency index, wherein the obtained ratio reflects the accurate condition of the detected idle communication frequency band of the logistics vehicle under the condition of the same power consumption, and further, the initially selected idle communication frequency band corresponding to the maximum idle communication frequency band detection trust index is the optimal idle communication frequency band accurately detected by the logistics vehicle;
step 6, the logistics vehicle makes judgment processing according to the detection result aiming at the current optimal idle communication frequency band:
when the optimal idle communication frequency band is detected, the step 7 is carried out; otherwise, go to step 8;
step 7, the logistics vehicle acquires the real-time positioning information of the current position, processes the real-time positioning information, and then sends the processed real-time positioning information to a sender sending the real-time positioning information inquiry instruction through the optimal idle communication frequency band;
and 8, the logistics vehicle takes the communication frequency band which is being used before the logistics vehicle receives the real-time positioning inquiry command as an idle communication frequency band, and sends the acquired real-time positioning information aiming at the current position to a sender which sends the real-time positioning information inquiry command.
In view of the actual need for video data information for cargo monitoring to be sent to a logistics manager when a logistics vehicle is traveling in a mountain area environment, the embodiment also makes the following improvement measures to meet the need for complete transmission of the video data information. Specifically, the improvement comprises the following steps a1 to a5:
step a1, a logistics management side sends a cargo state monitoring instruction to a logistics vehicle corresponding to the cargo;
step a2, the logistics vehicle which receives the cargo state monitoring instruction collects video information data of the cargo;
step a3, the logistics vehicle makes a judgment according to the collected video information data:
when the data volume of the video information data is larger than a preset data volume threshold value, the video to be transmitted outwards is larger, and the video is difficult to be transmitted in a conventional direct transmission mode, and then the step a4 is carried out; otherwise, the logistics vehicle sends the video information data to a logistics management party through the detected optimal idle communication frequency band;
step a4, the logistics vehicle sequentially cuts the video information data into a plurality of video segments according to the front-back sequence of the frames, assigns a corresponding segment number to each video segment, and then goes to step a5; wherein the number of the previous video segment is smaller than the number of the next video segment; that is, the logistics vehicle will fragment the larger video information to be decomposed into a plurality of small videos;
step a5, the logistics vehicle detects the optimal idle communication frequency band in the communication environment where the current moment is located before transmitting each video segment, and transmits each video segment to be transmitted to a logistics management side through the optimal idle communication frequency band detected at the latest moment; the detection mode of the optimal idle communication frequency band in the step a5 is the same as the detection mode of the optimal idle communication frequency band in the step 5.
That is, it is assumed that for the 3 rd video segment after having been fragmented, before the logistics vehicle transmits the 3 rd video segment outward, the logistics vehicle needs to first detect the best idle communication segment within the communication environment in which the current time is located, and then after determining that the best idle communication segment has been detected, the logistics vehicle transmits the 3 rd video segment to the logistics manager through the best idle communication segment just determined. Since the status of the communication band busy in the communication environment where the logistics vehicle is located may have changed when the 3 rd video segment is transmitted to the outside, before the logistics vehicle transmits the 4 th video segment to the outside, it is also necessary to first detect the best idle communication band in the communication environment where the current moment of the logistics vehicle (where the position of the logistics vehicle has changed generally) and then, after determining that the best idle communication band has been detected, send the 4 th video segment to the logistics manager through the best idle communication band just determined. The process is repeated until all the video segments after the decomposition are sent to the logistics management party by the logistics vehicles located in the mountain area environment.
Considering that a plurality of logistics vehicles of the same logistics company are transported in a team mode when a large amount of cargoes are transported, the distance between the logistics vehicles is not too large, and the distance between the logistics vehicles is still small even in the expressway environment. However, when a plurality of logistics vehicles transported in a team enter a cargo yard after a destination, the communication quality in the cargo yard is generally poor due to the influence of a large amount of cargo placed in the cargo yard. At this time, in order to satisfy the monitoring of the logistics vehicles entering the cargo yard by the logistics management party and the cargo monitoring, the embodiment also takes logistics monitoring measures in the cargo yard environment. For example, the flow monitoring measures herein include the steps of:
step b1, when a plurality of logistics vehicles drive into a goods yard in a team mode, each logistics vehicle respectively sends team transportation information to a logistics management party; the logistics management side is used for acquiring the state conditions of all logistics vehicles at the moment, wherein the logistics vehicles which are already assembled are used for transmitting the information of successful team formation to the logistics management side;
step b2, the logistics management side respectively sends the cargo state monitoring instruction aiming at the cargo to be monitored to each logistics vehicle in the team transportation;
step b3, each logistics vehicle judges whether the goods to be monitored corresponding to the goods state monitoring instruction are transported by the logistics vehicle or not:
when the logistics vehicle does not transport the goods to be monitored currently, the logistics vehicle detects an idle communication frequency band in a communication environment where the current moment is located and a signal-to-noise ratio when the logistics vehicle sends a signal, and the step b4 is shifted; otherwise, the logistics vehicle collects video monitoring data of the goods to be monitored, detects an idle communication frequency band in a communication environment at the current moment, and shifts to a step b7;
step b4, processing according to idle communication frequency bands detected by all logistics vehicles in team transportation:
when the overlapped idle communication frequency bands exist, the fact that a plurality of logistics vehicles detect that a certain communication frequency band in the current cargo yard environment is in an idle state at the same time is indicated, each overlapped idle communication frequency band is marked as a quasi-selected idle communication frequency band at the moment, and the step b5 is carried out; otherwise, the idle states of the communication frequency bands in the cargo yard at the current moment detected by each logistics vehicle are different, and the step b6 is carried out;
step b5, calculating the detected times of each idle communication frequency band to be selected, selecting the idle communication frequency band to be selected with the largest detected times as a preferable idle communication frequency band aiming at the cargo yard environment where the current moment is located, and sending the preferable idle communication frequency band to each logistics vehicle in team transportation, wherein each logistics vehicle in team transportation uses the preferable idle communication frequency band as the communication frequency band when the logistics vehicle in team transportation communicates with the outside at the current moment;
the condition that the detected idle communication frequency band to be selected with the largest frequency indicates that the idle state of the idle communication frequency band to be selected has been detected and judged by a plurality of logistics vehicles, so that the reliability of the idle communication frequency band to be selected with the largest frequency to be detected in the idle state is higher;
step b6, selecting an idle communication frequency band detected by the logistics vehicles with the maximum signal-to-noise ratio as a preferable idle communication frequency band aiming at the environment of the cargo yard where the current moment is located, transmitting the preferable idle communication frequency band to each logistics vehicle in team transportation, and taking the preferable idle communication frequency band as a communication frequency band when the logistics vehicles in team transportation communicate with the outside at the current moment; therefore, each logistics vehicle in the group transportation in the goods yard can be ensured to acquire the idle communication frequency band with the best performance at the current moment, and then when any logistics vehicle in the group transportation needs to transmit data outwards, the logistics vehicle can be directly switched to the idle communication frequency band to transmit the data to the outside;
and b7, the logistics vehicle transmits the video monitoring data to the logistics management party by utilizing the idle communication frequency band detected at the current moment of the logistics vehicle.
While the preferred embodiments of the present invention have been described in detail, it is to be clearly understood that the same may be varied in many ways by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The logistics management method based on the Beidou satellite positioning technology is characterized by comprising the following steps of 1-8:
step 1, a cargo bearing relation list between each cargo and a logistics vehicle bearing each cargo is constructed in advance; wherein each cargo corresponds to a logistics vehicle carrying the cargo;
step 2, judging according to the acquired real-time position query request of the goods:
when the goods are in the constructed goods bearing relation list, turning to step 3; otherwise, feeding back prompt information that the goods are not queried to a sender of the real-time position query request of the goods;
step 3, inquiring in the constructed cargo bearing relation list to obtain a logistics vehicle corresponding to the cargo;
step 4, sending a real-time positioning information inquiry command to the inquired logistics vehicle;
step 5, the logistics vehicle which receives the real-time positioning query instruction detects the optimal idle communication frequency band in the communication environment where the current real-time position is located; in the step 5, the process of selecting the optimal idle communication frequency band by the logistics vehicle includes the following steps 51 to 53:
step 51, the logistics vehicle acquires a primary selected idle communication frequency band in a communication environment where a current real-time position is located according to a preset detection frequency in a preset time period;
step 52, the logistics vehicle respectively collects the collection time corresponding to each primary selected idle communication frequency band, and collects the signal-to-noise ratio and the power consumption value corresponding to each collection time of the logistics vehicle;
step 53, the logistics vehicle processes according to all detected primary selected idle communication frequency bands, signal to noise ratio and power consumption values to obtain an optimal idle communication frequency band; the logistics vehicle processes according to all detected initially selected idle communication frequency bands, signal to noise ratio and power consumption values, and the process of obtaining the optimal idle communication frequency band comprises the following steps S1-S5:
step S1, logistics vehicle Car m Aiming at each primary selected idle communication frequency band, respectively calculating the power consumption efficiency index of the acquisition time corresponding to each primary selected idle communication frequency band; wherein, the idle communication frequency band is initially selected
Corresponding acquisition time +.>
The power consumption efficiency index of (2) is marked +.>
Step S2, logistics vehicle Car m Normalizing all the calculated power consumption efficiency indexes to obtain normalized power consumption efficiency indexes of the acquisition time corresponding to each primary selected idle communication frequency band; wherein, the idle communication frequency band is initially selected
Corresponding acquisition time +.>
The normalized power consumption efficiency index of (2) is marked +.>
Step S3, the logistics vehicle calculates the normalized detection performance index of each primary selected idle communication frequency band at the corresponding acquisition time according to all the acquired signal-to-noise ratios; wherein, the idle communication frequency band is initially selected
Corresponding acquisition time +.>
The normalized detection Performance index of (2) is marked as +.>
Step S4, the logistics vehicle calculates each normalized power consumption efficiency index according to the obtained power consumption efficiency indexes
And normalized detection performance index corresponding to the acquisition time>
Respectively and correspondingly obtaining an idle communication frequency band detection trust index corresponding to each primary selected idle communication frequency band; wherein, the primary selection of the idle communication frequency band is->
The corresponding idle communication frequency band detection trust index is marked as
S5, the logistics vehicle takes the primary selected idle communication frequency band corresponding to the maximum idle communication frequency band detection trust index as the optimal idle communication frequency band;
step 6, the logistics vehicle makes judgment processing according to the detection result aiming at the current optimal idle communication frequency band:
when the optimal idle communication frequency band is detected, the step 7 is carried out; otherwise, go to step 8;
step 7, the logistics vehicle acquires the real-time positioning information of the current position, processes the real-time positioning information, and then sends the processed real-time positioning information to a sender sending the real-time positioning information inquiry instruction through the optimal idle communication frequency band;
and 8, the logistics vehicle takes the communication frequency band which is being used before the logistics vehicle receives the real-time positioning inquiry command as an idle communication frequency band, and sends the acquired real-time positioning information aiming at the current position to a sender which sends the real-time positioning information inquiry command.
2. The method for logistics management based on Beidou satellite positioning technology of claim 1, further comprising:
step a1, a logistics management side sends a cargo state monitoring instruction to a logistics vehicle corresponding to the cargo;
step a2, the logistics vehicle which receives the cargo state monitoring instruction collects video information data of the cargo;
step a3, the logistics vehicle makes a judgment according to the collected video information data:
when the data volume of the video information data is larger than a preset data volume threshold value, a step a4 is carried out; otherwise, the logistics vehicle sends the video information data to a logistics management party through the optimal idle communication frequency band;
step a4, the logistics vehicle sequentially cuts the video information data into a plurality of video segments according to the front-back sequence of the frames, assigns a corresponding segment number to each video segment, and then goes to step a5; wherein the number of the previous video segment is smaller than the number of the next video segment;
step a5, the logistics vehicle detects the optimal idle communication frequency band in the communication environment where the current moment is located before transmitting each video segment, and transmits each video segment to be transmitted to a logistics management side through the optimal idle communication frequency band detected at the latest moment; the detection mode of the optimal idle communication frequency band in the step a5 is the same as the detection mode of the optimal idle communication frequency band in the step 5.
3. The method for logistics management based on Beidou satellite positioning technology according to claim 1 or 2, further comprising:
step b1, when a plurality of logistics vehicles drive into a goods yard in a team mode, each logistics vehicle respectively sends team transportation information to a logistics management party;
step b2, the logistics management side respectively sends cargo state monitoring instructions aiming at cargoes to be monitored to each logistics vehicle in team transportation;
step b3, each logistics vehicle judges whether the goods to be monitored corresponding to the goods state monitoring instruction are transported by the logistics vehicle or not:
when the logistics vehicle does not transport the goods to be monitored currently, the logistics vehicle detects an idle communication frequency band in a communication environment where the current moment is located and a signal-to-noise ratio when the logistics vehicle sends a signal, and the step b4 is shifted; otherwise, the logistics vehicle collects video monitoring data of the goods to be monitored, detects an idle communication frequency band in a communication environment at the current moment, and shifts to a step b7;
step b4, processing according to idle communication frequency bands detected by all logistics vehicles in team transportation:
when the coincident idle communication frequency bands exist, marking each coincident idle communication frequency band as a quasi-selected idle communication frequency band, and turning to the step b5; otherwise, go to step b6;
step b5, calculating the detected times of each idle communication frequency band to be selected, selecting the idle communication frequency band to be selected with the largest detected times as a preferable idle communication frequency band aiming at the cargo yard environment where the current moment is located, and sending the preferable idle communication frequency band to each logistics vehicle in team transportation, wherein each logistics vehicle in team transportation uses the preferable idle communication frequency band as the communication frequency band when the logistics vehicle in team transportation communicates with the outside at the current moment;
step b6, selecting an idle communication frequency band detected by the logistics vehicles with the maximum signal-to-noise ratio as a preferable idle communication frequency band aiming at the environment of the cargo yard where the current moment is located, transmitting the preferable idle communication frequency band to each logistics vehicle in team transportation, and taking the preferable idle communication frequency band as a communication frequency band when the logistics vehicles in team transportation communicate with the outside at the current moment;
and b7, the logistics vehicle transmits the video monitoring data to the logistics management party by utilizing the idle communication frequency band detected at the current moment of the logistics vehicle.
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