CN111031530A - Agricultural Internet of things communication system and control method thereof - Google Patents
Agricultural Internet of things communication system and control method thereof Download PDFInfo
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- CN111031530A CN111031530A CN201911108657.9A CN201911108657A CN111031530A CN 111031530 A CN111031530 A CN 111031530A CN 201911108657 A CN201911108657 A CN 201911108657A CN 111031530 A CN111031530 A CN 111031530A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/183—Processing at user equipment or user record carrier
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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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
- H04W4/025—Services making use of location information using location based information parameters
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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
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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Abstract
The invention discloses an agricultural Internet of things communication system and a control method thereof, wherein the method comprises the following steps: determining the network signal intensity of the Internet of things card and the Internet of things cost of an operator; determining an internet of things card to be selected according to the network signal intensity of the internet of things card and the internet of things cost of an operator; the remote background system sends a control instruction to a 4G communication module of the Internet of things equipment; the 4G communication module transmits the control instruction to the MCU processor; sending a control signal to the bidirectional electronic switch through the MCU processor; and the selected Internet of things card is controlled and determined to be accessed into the 4G communication module through the bidirectional electronic switch. According to the invention, manual card replacement is not required in an outdoor site, so that the maintenance efficiency is improved, the labor cost is reduced, and the method can be widely applied to the technical field of the Internet of things.
Description
Technical Field
The invention relates to the technical field of Internet of things, in particular to an agricultural Internet of things communication system and a control method thereof.
Background
With the continuous development and popularization of modern electronic technology, the internet of things is rapidly developed, and for outdoor agricultural internet of things equipment, the adoption of cellular mobile network networking is the most appropriate solution. And a plurality of mobile communication schemes with single card and single standby are adopted in the market. However, only one internet of things card can be installed in the scheme, when the current internet of things card network signal does not exist in the installed position, or when the charge of the internet of things cards of other operators is obviously reduced, the cards need to be changed to the outdoor site when the internet of things cards of other operators are needed to be changed, generally, outdoor agricultural internet of things equipment is located in a remote mountain area, and the card changing maintenance cost is high.
Disclosure of Invention
In view of this, the embodiment of the invention provides an agricultural internet of things communication system with high maintenance efficiency and low labor cost and a control method thereof.
In a first aspect, the embodiment of the invention provides an agricultural internet of things communication system, which comprises a remote background system and internet of things equipment, wherein the internet of things equipment comprises an MCU (microprogrammed control Unit) processor, a bidirectional electronic switch, an eSIM (electronic subscriber identity Module) card group, a GPS (global positioning system) module and a 4G communication module;
the remote background system is used for determining an Internet of things card to be subjected to networking communication according to the position information of the Internet of things equipment and the Internet of things card information on the Internet of things equipment and sending a control instruction to the 4G communication module;
the MCU processor is used for sending a control signal to the bidirectional electronic switch according to a control instruction sent by the remote background system to control the operation of the bidirectional electronic switch;
the bidirectional electronic switch is used for determining an internet of things card accessed to the 4G communication module according to a control signal of the MCU processor;
the eSIM card group comprises more than two Internet of things SIM cards;
the GPS module is used for acquiring the position information of the Internet of things equipment;
the 4G communication module is used for realizing data communication between the MCU processor and the remote background system, sending the position information of the Internet of things equipment to the remote background system and transmitting the control instruction of the remote background system to the MCU processor.
Further, the bidirectional electronic switch consists of two double-path SIM card electronic switches; the two-way SIM card electronic switch consists of an FSA2567MPX chip and a peripheral circuit of the FSA2567MPX chip;
the eSIM card group comprises a first SIM card, a second SIM card and a third SIM card;
the signal wires of the first SIM card are connected to a first pin, a fifth pin, a ninth pin and a thirteenth pin of a first FSA2567MPX chip;
the signal wires of the second SIM card are connected to a fifteenth pin, a third pin, a seventh pin and an eleventh pin of the first FSA2567MPX chip;
the sixteenth pin of the first FSA2567MPX chip is connected with the fifteenth pin of the second FSA2567MPX chip, the fourth pin of the first FSA2567MPX chip is connected with the third pin of the second FSA2567MPX chip, the eighth pin of the first FSA2567MPX chip is connected with the seventh pin of the second FSA2567MPX chip, and the twelfth pin of the first FSA2567MPX chip is connected with the eleventh pin of the second FSA2567MPX chip;
the signal wire of the third SIM card is connected to the first pin, the fifth pin, the ninth pin and the thirteenth pin of the second FSA2567MPX chip;
and the sixteenth pin, the fourth pin, the eighth pin and the twelfth pin of the second FSA2567MPX chip are connected to the SIM card interface pins of the 4G communication module.
Further, a 4G module serial port communication interface, a GPS module serial port communication interface and a bidirectional electronic switch control interface are arranged on the MCU processor;
the 4G communication module is provided with a data communication interface of an SIM card;
and the bidirectional electronic switch is provided with an Internet of things SIM card communication interface.
In a second aspect, an embodiment of the present invention provides a control method for an agricultural internet of things communication system, including the following steps:
determining the network signal intensity of the Internet of things card and the Internet of things cost of an operator;
determining an internet of things card to be selected according to the network signal intensity of the internet of things card and the internet of things cost of an operator;
the remote background system sends a control instruction to a 4G communication module of the Internet of things equipment;
the 4G communication module transmits the control instruction to the MCU processor;
sending a control signal to the bidirectional electronic switch through the MCU processor;
and the selected Internet of things card is controlled and determined to be accessed into the 4G communication module through the bidirectional electronic switch.
Further, the method also comprises the following steps:
acquiring position information of the Internet of things equipment;
and according to the position information of the Internet of things equipment, after the position of the Internet of things equipment is determined to move, the network signal intensity of the Internet of things network card and the Internet of things cost of the operator are determined again.
Further, the method comprises the following steps:
and configuring an automatic communication mode and a fixed communication mode through a remote background system.
Further, the automatic communication mode includes the steps of:
checking whether a preset optimal SIM card networking scheme exists locally in the Internet of things equipment, if so, adopting the preset SIM card networking scheme for communication; otherwise, executing the next step;
detecting the signal intensity of each SIM card one by one;
networking the SIM cards capable of normally surfing the Internet one by one;
downloading operator charge information of each SIM card through a remote background system;
and determining the optimal SIM card according to the signal intensity of each SIM card and the charge information of the operator, and storing the optimal SIM card to the local equipment of the Internet of things.
Further, the fixed communication mode includes the steps of:
judging whether the SIM card in the fixed communication mode can be normally networked, if so, executing the next step; otherwise, one SIM card capable of being normally networked is detected one by one to carry out networking operation.
Further, the method also comprises the following steps:
when the current time is determined to be in the preset communication mode updating time, executing a communication scheme updating step, wherein the communication scheme updating step comprises the following steps:
detecting the signal intensity of each SIM card one by one;
networking the SIM cards capable of normally surfing the Internet one by one;
downloading operator charge information of each SIM card through a remote background system;
and determining the optimal SIM card according to the signal intensity of each SIM card and the charge information of the operator, and storing the optimal SIM card to the local equipment of the Internet of things.
Further, the method also comprises the following steps:
determining that the current time is not in the preset communication mode updating time, and executing the following steps when determining that a polling instruction sent by a remote background system is received:
detecting the signal intensity of each SIM card one by one;
networking the SIM cards capable of normally surfing the Internet one by one;
downloading operator charge information of each SIM card through a remote background system;
and determining the optimal SIM card according to the signal intensity of each SIM card and the charge information of the operator, and storing the optimal SIM card to the local equipment of the Internet of things.
One or more of the above-described embodiments of the present invention have the following advantages: compared with the prior art that only one internet of things card can be installed, the invention does not need to manually change the card in an outdoor field, improves the maintenance efficiency and reduces the labor cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a block diagram of the overall structure of an agricultural internet of things communication system of the present invention;
FIG. 2 is a circuit schematic of a bidirectional electronic switch according to an embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of an eSIM card set according to an embodiment of the invention;
FIG. 4 is a flowchart of processing steps for an embodiment of the present invention.
Detailed Description
The invention will be further explained and explained with reference to the drawings and the embodiments in the description. The step numbers in the embodiments of the present invention are set for convenience of illustration only, the order between the steps is not limited at all, and the execution order of each step in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.
Referring to fig. 1, the present invention is directed to provide a flexible mobile communication system for an outdoor internet of things device. The hardware module of the system mainly comprises an MCU processor, a bidirectional electronic switch, an eSIM card and a 4G communication module.
As shown in fig. 1, 1 is an MCU processor; 2, a 4G module serial port communication interface; 3 is a serial port communication interface of the GPS module; 4 is a GPS positioning module; 5 is a 4G communication module; 6 is a bidirectional electronic switch control interface; 7 is a data communication interface of the SIM card of the 4G module; 8 is a bidirectional electronic switch combination; 9. 11, 13 are data communication interfaces of a first internet of things SIM card, a second internet of things SIM card and an internet of things SIM card respectively; 10. 12 and 14 are respectively a first internet of things SIM card, a second internet of things SIM card and a third internet of things SIM card.
The overall operating principle of the system shown in fig. 1 is as follows:
the MCU processor is connected with the 4G mobile communication module through a serial port interface, and is communicated with a back-end cloud server by using an AT instruction, so that functions of data uploading, parameter downloading, remote control and the like are realized; the MCU processor is connected with the GPS positioning module through a serial port interface, and acquires GPS positioning information by using an NMEA0183 protocol; the SIM card communication interface of the 4G communication module is connected with the first Internet of things SIM card, the second Internet of things SIM card and the third Internet of things SIM card through the 3-to-1 bidirectional electronic switch combination, and the MCU processor controls the 3-to-1 bidirectional electronic switch combination through the IO port to select the first Internet of things SIM card, the second Internet of things SIM card or the third Internet of things SIM card, so that the software control three-card single-standby function is realized.
As shown in fig. 2 and fig. 3, the three-card single-standby switching circuit in this embodiment is composed of two dual-path SIM card electronic switches, where the dual-path SIM card electronic switches are composed of an FSA2567MPX chip and peripheral circuits thereof. The specific schematic diagram is shown in fig. 2.
The specific operating principle of the circuit diagrams shown in fig. 2 and 3 is as follows:
the whole principle diagram consists of two double-path SIM card electronic switches, a signal wire of a first SIM card 1 is connected to pins 1(1Vsim), 5(1Rst), 9(1CLK) and 13(1DAT) of a first FSA2567MPX chip U20, a signal wire of a second SIM card 2 is connected to pins 15(2Vsim), 3(2Rst), 7(2CLK) and 11(2DAT) of U20, when pin 2(Sel) of U20 is at a low level, pins 1, 5, 9 and 13 of U20 are connected to pins 16, 4, 8 and 12 of U20, and when pin 2(Sel) of U20 is at a high level, pins 15, 3, 7 and 11 of U20 are connected to pins 16, 4, 8 and 12 of U20; pins 16, 4, 8, 12 of U20 are connected to pins 15(2Vsim), 3(2Rst), 7(2CLK), 11(2DAT) of U19, and the signal line of the third SIM card 3 is connected to pins 1(1Vsim), 5(1Rst), 9(1CLK), 13(1DAT) of the second FSA2567MPX chip U19, and when pin 2(Sel) of U19 is low, pins 1, 5, 9, 13 of U19 are connected to pins 16, 4, 8, 12 of U19, and when pin 2(Sel) of U19 is high, pins 15, 3, 7, 11 of U19 are connected to pins 16, 4, 8, 12 of U19, and pins 16, 4, 8, 12 of U19 are connected to the SIM card interface pins of the 4G module. In summary, when pin 2(Sel) of U19 is at low level, SIM card 3 is communicated with the SIM card interface of the 4G module; when pin 2(Sel) of U19 is high and pin 2(Sel) of U20 is low, the first SIM card 1 communicates with the SIM card interface of the 4G module; when pin 2(Sel) of U19 is high and pin 2(Sel) of U20 is high, SIM card 2 communicates with the SIM card interface of the 4G module;
referring to fig. 4, the overall implementation steps of the control method of the agricultural internet of things communication system of the invention are described in detail as follows:
1. the system of the embodiment supports a remote configuration automatic mode and a fixed mode, in the automatic mode, the system can select the optimal Internet of things card for networking communication according to the network signal intensity information of the 3 Internet of things cards and the Internet of things cost of an operator, and in the fixed mode, the system can use the Internet of things card configured in the background for networking communication.
2. When the equipment is started for the first time, the default use automatic mode is adopted, the system can switch one by one to acquire the network signal intensity information of 3 internet of things cards, the internet of things card with the optimal network is used for networking, the tariff information of three operators is acquired from a background server, the internet of things card with the optimal tariff is selected on the premise that the lower limit of the signal intensity is met according to the network signal intensity of the 3 internet of things cards, and the server is informed to stop the other two internet of things cards.
3. In an automatic mode, the system can automatically acquire longitude and latitude information of the current position, judge whether the position moves, download the latest charge information of three operators from a background server if the distance of the position which moves is detected to exceed the distance upper limit of a system preset value, acquire the network signal intensity of 3 internet of things one by one, select the internet of things with the optimal charge according to the network signal intensity of the 3 internet of things under the premise of meeting the signal intensity lower limit, and inform a server to stop the other two internet of things.
4. In an automatic mode, when the system receives a card scanning command issued by a background server, the latest charge information of three operators is downloaded from the background server, then the network signal intensity of 3 internet of things cards is acquired one by one, the internet of things card with the optimal charge is selected according to the network signal intensity of the 3 internet of things cards on the premise of meeting the lower limit of the signal intensity, and the server is informed to stop the other two internet of things cards.
5. In the automatic mode, the system downloads the latest charge information of three operators from the background server every last day of the month, then acquires the network signal intensity of the 3 internet of things cards one by one, selects the internet of things card with the optimal charge according to the network signal intensity of the 3 internet of things cards on the premise of meeting the lower limit of the signal intensity, and informs the server to stop the other two internet of things cards.
The invention designs a multi-card (such as three cards) single-standby agricultural eye internet of things communication system, which can freely switch the internet of things cards of different operators without manual work on the equipment installation site, and intelligently select the internet of things cards, such as the internet of things card with the best network signal and the most favorable price set.
Compared with the traditional agricultural Internet of things communication system, the agricultural Internet of things communication system with three cards and single standby is adopted, and agricultural Internet of things equipment is usually in remote areas, when the SIM card needs to be replaced due to the problems of weak network signals, charge adjustment and the like, Internet of things cards of different operators can be remotely and freely controlled to be switched, the Internet of things card with the best network signals and the most favorable charge package is intelligently selected, the maintenance efficiency is greatly improved, and the labor cost is reduced.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides an agricultural thing networking communication system which characterized in that: the system comprises a remote background system and Internet of things equipment, wherein the Internet of things equipment comprises an MCU (microprogrammed control Unit) processor, a bidirectional electronic switch, an eSIM (embedded subscriber identity Module) card group, a GPS (global positioning system) module and a 4G communication module;
the remote background system is used for determining an Internet of things card to be subjected to networking communication according to the position information of the Internet of things equipment and the Internet of things card information on the Internet of things equipment and sending a control instruction to the 4G communication module;
the MCU processor is used for sending a control signal to the bidirectional electronic switch according to a control instruction sent by the remote background system to control the operation of the bidirectional electronic switch;
the bidirectional electronic switch is used for determining an internet of things card accessed to the 4G communication module according to a control signal of the MCU processor;
the eSIM card group comprises more than two Internet of things SIM cards;
the GPS module is used for acquiring the position information of the Internet of things equipment;
the 4G communication module is used for realizing data communication between the MCU processor and the remote background system, sending the position information of the Internet of things equipment to the remote background system and transmitting the control instruction of the remote background system to the MCU processor.
2. The agricultural internet of things communication system according to claim 1, wherein:
the bidirectional electronic switch consists of two double-path SIM card electronic switches; the two-way SIM card electronic switch consists of an FSA2567MPX chip and a peripheral circuit of the FSA2567MPX chip;
the eSIM card group comprises a first SIM card, a second SIM card and a third SIM card;
the signal wires of the first SIM card are connected to a first pin, a fifth pin, a ninth pin and a thirteenth pin of a first FSA2567MPX chip;
the signal wires of the second SIM card are connected to a fifteenth pin, a third pin, a seventh pin and an eleventh pin of the first FSA2567MPX chip;
the sixteenth pin of the first FSA2567MPX chip is connected with the fifteenth pin of the second FSA2567MPX chip, the fourth pin of the first FSA2567MPX chip is connected with the third pin of the second FSA2567MPX chip, the eighth pin of the first FSA2567MPX chip is connected with the seventh pin of the second FSA2567MPX chip, and the twelfth pin of the first FSA2567MPX chip is connected with the eleventh pin of the second FSA2567MPX chip;
the signal wire of the third SIM card is connected to the first pin, the fifth pin, the ninth pin and the thirteenth pin of the second FSA2567MPX chip;
and the sixteenth pin, the fourth pin, the eighth pin and the twelfth pin of the second FSA2567MPX chip are connected to the SIM card interface pins of the 4G communication module.
3. The agricultural internet of things communication system according to claim 1, wherein: the MCU processor is provided with a 4G module serial port communication interface, a GPS module serial port communication interface and a bidirectional electronic switch control interface;
the 4G communication module is provided with a data communication interface of an SIM card;
and the bidirectional electronic switch is provided with an Internet of things SIM card communication interface.
4. The agricultural internet of things communication system applied to the claim 1 is a control method of the agricultural internet of things communication system, and is characterized in that: the method comprises the following steps:
determining the network signal intensity of the Internet of things card and the Internet of things cost of an operator;
determining an internet of things card to be selected according to the network signal intensity of the internet of things card and the internet of things cost of an operator;
the remote background system sends a control instruction to a 4G communication module of the Internet of things equipment;
the 4G communication module transmits the control instruction to the MCU processor;
sending a control signal to the bidirectional electronic switch through the MCU processor;
and the selected Internet of things card is controlled and determined to be accessed into the 4G communication module through the bidirectional electronic switch.
5. The control method of the agricultural internet of things communication system according to claim 4, wherein: further comprising the steps of:
acquiring position information of the Internet of things equipment;
and according to the position information of the Internet of things equipment, after the position of the Internet of things equipment is determined to move, the network signal intensity of the Internet of things network card and the Internet of things cost of the operator are determined again.
6. The control method of the agricultural internet of things communication system according to claim 4, wherein: the method comprises the following steps:
and configuring an automatic communication mode and a fixed communication mode through a remote background system.
7. The control method of the agricultural internet of things communication system according to claim 6, wherein: the automatic communication mode comprises the following steps:
checking whether a preset optimal SIM card networking scheme exists locally in the Internet of things equipment, if so, adopting the preset SIM card networking scheme for communication; otherwise, executing the next step;
detecting the signal intensity of each SIM card one by one;
networking the SIM cards capable of normally surfing the Internet one by one;
downloading operator charge information of each SIM card through a remote background system;
and determining the optimal SIM card according to the signal intensity of each SIM card and the charge information of the operator, and storing the optimal SIM card to the local equipment of the Internet of things.
8. The control method of the agricultural internet of things communication system according to claim 6, wherein: the fixed communication mode comprises the following steps:
judging whether the SIM card in the fixed communication mode can be normally networked, if so, executing the next step; otherwise, one SIM card capable of being normally networked is detected one by one to carry out networking operation.
9. The control method of the agricultural internet of things communication system according to any one of claims 7 or 8, wherein: further comprising the steps of:
when the current time is determined to be in the preset communication mode updating time, executing a communication scheme updating step, wherein the communication scheme updating step comprises the following steps:
detecting the signal intensity of each SIM card one by one;
networking the SIM cards capable of normally surfing the Internet one by one;
downloading operator charge information of each SIM card through a remote background system;
and determining the optimal SIM card according to the signal intensity of each SIM card and the charge information of the operator, and storing the optimal SIM card to the local equipment of the Internet of things.
10. The control method of the agricultural internet of things communication system according to any one of claims 7 or 8, wherein: further comprising the steps of:
determining that the current time is not in the preset communication mode updating time, and executing the following steps when determining that a polling instruction sent by a remote background system is received:
detecting the signal intensity of each SIM card one by one;
networking the SIM cards capable of normally surfing the Internet one by one;
downloading operator charge information of each SIM card through a remote background system;
and determining the optimal SIM card according to the signal intensity of each SIM card and the charge information of the operator, and storing the optimal SIM card to the local equipment of the Internet of things.
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| CN112437429A (en) * | 2021-01-28 | 2021-03-02 | 北京树米网络科技有限公司 | Processing method and device for responding to equipment number changing instruction |
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