CN107196997B - Ultra-remote signal transmission method based on agricultural Internet of things - Google Patents
Ultra-remote signal transmission method based on agricultural Internet of things Download PDFInfo
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- CN107196997B CN107196997B CN201710276750.5A CN201710276750A CN107196997B CN 107196997 B CN107196997 B CN 107196997B CN 201710276750 A CN201710276750 A CN 201710276750A CN 107196997 B CN107196997 B CN 107196997B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000008054 signal transmission Effects 0.000 title claims abstract description 22
- 239000003337 fertilizer Substances 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000003973 irrigation Methods 0.000 claims abstract description 12
- 230000002262 irrigation Effects 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003621 irrigation water Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
- H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1816—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of the same, encoded, message
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Selective Calling Equipment (AREA)
- Communication Control (AREA)
Abstract
The invention relates to an ultra-remote signal transmission method based on an agricultural Internet of things, which comprises the following steps: the method comprises the steps of ultra-long-distance transmission, storage, receiving, relay forwarding, execution, feedback and the like of wireless signals of the central logic controller. According to the wireless ultra-remote control signal sending relay forwarding method based on the agricultural Internet of things, feedback tracking of a signal transmission process is added on a cloud server, and after control signals are successfully received and forwarded until a last station is successfully executed, the last station sends back feedback signals in a relay mode step by step until a central logic controller and sends the feedback signals to the cloud server; if the central logic controller fails to receive any one of the three feedback types of receiving, executing and executing, the central logic controller is regarded as the failure of the signal transmission, and the central logic controller retransmits twice again until all the feedback signals are received and reports the whole-process transmission and feedback results of the signals to the cloud server. The method can solve the problem that large-range and ultra-remote control signal transmission of the agricultural Internet of things is unreliable, and ensures the reliability of remote transmission of the water and fertilizer integrated irrigation signal.
Description
Technical Field
The invention relates to an ultra-long-distance signal transmission method based on an agricultural Internet of things.
Background
The control system based on the agricultural Internet of things mostly adopts two technical schemes, one is a wired mode, the advantage of the mode is that signal transmission is reliable, the shortcoming is that wiring workload is large, and once an electric wire is dug to be broken by an agricultural tool, the repairing difficulty is very large. Another way is wireless single-pass transmission, which has the advantage of no need for maintenance wires and the disadvantage of limited transmission distances, typically 2-3 km, that cannot be achieved for reliable ultra-long range signal transmission, e.g. distances above 8 km.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the traditional technology are overcome, and the ultra-long distance signal transmission method based on the agricultural Internet of things is provided.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a super-remote signal transmission method based on an agricultural Internet of things is realized through a control system, wherein the control system comprises a cloud server, a central logic controller, a plurality of relay transceivers distributed in a farmland and a client running a program, and the relay transceivers are signal transceiver devices with respective numbers; the ultra-long-distance signal transmission method comprises the following steps:
1) the user operates the client to send control signals to the cloud server, wherein the control signals comprise an irrigation starting instruction, an irrigation stopping instruction and a fertilizer mixing instruction;
2) the central logic controller obtains the control signal from the cloud server;
3) the central logic controller modulates and codes the control signal and sends the control signal to the first relay transceiver;
4) the relay transceiver analyzes the received control signal, separates and executes the control instruction which belongs to the current relay transceiver and needs to be executed, and continuously sends other control instructions to the next relay transceiver;
5) the relay transceiver sequentially feeds back the state information of the received control instruction, the state information of the control instruction starting to be executed and the state information of the control instruction finishing to the last relay transceiver until the state information is fed back to the central logic controller, and the central logic controller sends the feedback state information to the cloud server for storage;
6) and the central logic controller checks the sent control signals in sequence, and if a feedback signal indicating that the instruction execution is successful is not received within the time T after the control signals are sent, the central logic controller retransmits the control signals and reports the state of the failed sending back to the cloud server.
The invention also has the following further technical characteristics:
1. the central logic controller transmits control signals and receives feedback signals through the wireless communication module with the frequency of 410-525 MHz.
2. The device is characterized by further comprising an electromagnetic valve controlled by the relay transceiver, wherein the electromagnetic valve comprises an electromagnetic valve for irrigation and an electromagnetic valve for mixed fertilizer, the electromagnetic valve for irrigation is installed on the irrigation water outlet pipe and used for controlling water outlet and water cut-off of the water outlet pipe, and the electromagnetic valve for mixed fertilizer is installed on a fertilizer output pipe of the fertilizer barrel and used for controlling fertilizer to enter the irrigation water outlet pipe.
3. And the client software carries out control signal sending state and control signal execution state query by accessing the cloud service.
4. The relay transceiver employs a ZM470SX wireless module.
5. The relay transceivers adopt single-wire series relay transmission.
6. The control signal obtained by the central logic controller from the cloud server comprises a control instruction and the number information of the corresponding relay transceiver.
The invention realizes wireless relay bidirectional transmission by means of the relay transceiver, can realize reliable ultra-long distance transmission, greatly reduces the construction cost, and is an excellent alternative scheme of two traditional signal transmission schemes in the background technology. According to the ultra-remote signal transmission method based on the agricultural Internet of things, the one-by-one tracking of the sending state of the control instruction is added on the central logic controller, when the control instruction is lost in transmission in any one stage of receiving, starting execution and ending execution, the central logic controller retransmits for two or more times, and the high reliability of instruction relay transmission can be ensured.
Drawings
Fig. 1 is a schematic diagram of a control system of an ultra-remote signal transmission method based on an agricultural internet of things.
Detailed Description
The ultra-remote signal transmission method of the agricultural internet of things is realized through a control system (as shown in fig. 1), and the control system comprises a cloud server, a central logic controller, a plurality of relay transceivers distributed in a farmland, and a client running a program. The relay transceivers adopt single-wire series relay transmission, the relay transceivers are signal transceivers with respective numbers, in the embodiment, the relay transceivers adopt ZM470SX wireless modules. The control system also comprises an electromagnetic valve for irrigation and an electromagnetic valve for mixed fertilizer, which are controlled by the ZM470SX wireless module, wherein the electromagnetic valve for irrigation is arranged on the irrigation water outlet pipe and used for controlling the water outlet and the water cut-off of the water outlet pipe, and the electromagnetic valve for mixed fertilizer is arranged on the fertilizer output pipe of the fertilizer barrel and used for controlling the fertilizer to enter the irrigation water outlet pipe. The embodiment adopts a water and fertilizer integrated control system to irrigate and fertilize the farmland.
The method of the embodiment comprises the following steps:
1) and the user operation client sends a control signal to the cloud server, wherein the control signal comprises a watering starting instruction, a watering stopping instruction and a fertilizer mixing instruction.
2) The central logic controller obtains the control signal from the cloud server; the central logic controller transmits control signals and receives feedback signals through the wireless communication module with the frequency of 410 and 525 MHz. The control signal comprises a control instruction and corresponding relay transceiver number information
3) And the central logic controller modulates and codes the control signal and sends the control signal to the first relay transceiver.
4) And the relay transceiver analyzes the received control signal, separates and executes the control instruction which belongs to the current relay transceiver and needs to be executed (controls the electromagnetic valve for irrigation and the electromagnetic valve for mixed fertilizer), and continuously sends other control instructions to the next relay transceiver.
5) And the relay transceiver sequentially feeds back the state information of the received control instruction, the state information of the control instruction starting to be executed and the state information of the control instruction finishing to the last relay transceiver until the state information is fed back to the central logic controller, and the central logic controller sends the feedback state information to the cloud server for storage.
6) And the central logic controller checks the sent control signals in sequence, and if a feedback signal indicating that the instruction execution is successful is not received within the time T after the control signals are sent, the central logic controller retransmits the control signals and reports the state of the failed sending back to the cloud server.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (5)
1. A super-remote signal transmission method based on an agricultural Internet of things is realized through a control system, wherein the control system comprises a cloud server, a central logic controller, a plurality of relay transceivers distributed in a farmland and a client running a program, and the relay transceivers are signal transceiver devices with respective numbers; the ultra-long-distance signal transmission method comprises the following steps:
1) the user operates the client to send control signals to the cloud server, wherein the control signals comprise an irrigation starting instruction, an irrigation stopping instruction and a fertilizer mixing instruction;
2) the central logic controller obtains the control signal from the cloud server;
3) the central logic controller modulates and codes the control signal and sends the control signal to the first relay transceiver; the central logic controller transmits control signals and receives feedback signals through a wireless communication module with the frequency of 410-525 MHz;
4) the relay transceiver analyzes the received control signal, separates and executes the control instruction which belongs to the current relay transceiver and needs to be executed, and continuously sends other control instructions to the next relay transceiver;
5) the relay transceiver sequentially feeds back the state information of the received control instruction, the state information of the control instruction starting to be executed and the state information of the control instruction finishing to the last relay transceiver until the state information is fed back to the central logic controller, and the central logic controller sends the feedback state information to the cloud server for storage;
6) the central logic controller checks the sent control signals in sequence, if a feedback signal indicating that the instruction execution is successful is not received within time T after the control signals are sent, the central logic controller retransmits the control signals and reports the state of failed sending back to the cloud server;
the relay transceiver employs a ZM470SX wireless module.
2. The agricultural internet of things-based ultra-remote signal transmission method according to claim 1, wherein: the device is characterized by further comprising an electromagnetic valve controlled by the relay transceiver, wherein the electromagnetic valve comprises an electromagnetic valve for irrigation and an electromagnetic valve for mixed fertilizer, the electromagnetic valve for irrigation is installed on the irrigation water outlet pipe and used for controlling water outlet and water cut-off of the water outlet pipe, and the electromagnetic valve for mixed fertilizer is installed on a fertilizer output pipe of the fertilizer barrel and used for controlling fertilizer to enter the irrigation water outlet pipe.
3. The agricultural internet of things-based ultra-remote signal transmission method according to claim 1, wherein: and the client software carries out control signal sending state and control signal execution state query by accessing the cloud service.
4. The agricultural internet of things-based ultra-remote signal transmission method according to claim 1, wherein: the relay transceivers adopt single-wire series relay transmission.
5. The agricultural internet of things-based ultra-remote signal transmission method according to claim 1, wherein: the control signal obtained by the central logic controller from the cloud server comprises a control instruction and the number information of the corresponding relay transceiver.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710276750.5A CN107196997B (en) | 2017-04-25 | 2017-04-25 | Ultra-remote signal transmission method based on agricultural Internet of things |
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| CN201710276750.5A CN107196997B (en) | 2017-04-25 | 2017-04-25 | Ultra-remote signal transmission method based on agricultural Internet of things |
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| CN107196997B true CN107196997B (en) | 2020-04-17 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103210817A (en) * | 2013-04-26 | 2013-07-24 | 中国矿业大学 | Automatic farmland irrigation system |
| CN105830870A (en) * | 2016-03-24 | 2016-08-10 | 华北水利水电大学 | Remote wireless farmland monitoring system and method |
| CN106297221A (en) * | 2016-08-19 | 2017-01-04 | 广东司南物联股份有限公司 | A kind of agricultural irrigation security alarm mode based on technology of Internet of things |
| CN106358997A (en) * | 2016-08-28 | 2017-02-01 | 中国农业科学院农田灌溉研究所 | Intelligent irrigation and fertilization system and intelligent irrigation and fertilization method based on cloud computation |
-
2017
- 2017-04-25 CN CN201710276750.5A patent/CN107196997B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103210817A (en) * | 2013-04-26 | 2013-07-24 | 中国矿业大学 | Automatic farmland irrigation system |
| CN105830870A (en) * | 2016-03-24 | 2016-08-10 | 华北水利水电大学 | Remote wireless farmland monitoring system and method |
| CN106297221A (en) * | 2016-08-19 | 2017-01-04 | 广东司南物联股份有限公司 | A kind of agricultural irrigation security alarm mode based on technology of Internet of things |
| CN106358997A (en) * | 2016-08-28 | 2017-02-01 | 中国农业科学院农田灌溉研究所 | Intelligent irrigation and fertilization system and intelligent irrigation and fertilization method based on cloud computation |
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| CN107196997A (en) | 2017-09-22 |
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Effective date of registration: 20200325 Address after: 210000 room 506, building 1, Xinyuan, Baixia District, Nanjing City, Jiangsu Province Applicant after: Ye Wei Address before: Guanghua Road Qinhuai District of Nanjing City, Jiangsu province 210000 No. 2 Xinyuan 1-506 Applicant before: Zhang Lun |
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Effective date of registration: 20220408 Address after: 210000 No.2, Shimenkan South Street, Qinhuai District, Nanjing City, Jiangsu Province Patentee after: Nanjing High Tech Co.,Ltd. Address before: 210000 room 506, building 1, Xinyuan, Baixia District, Nanjing City, Jiangsu Province Patentee before: Ye Wei |