Data acquisition device and data acquisition method for sensor of agricultural internet of things

Abstract

The invention discloses a data acquisition device and a data acquisition method for sensors of agricultural Internet of Things, and the acquisition device comprises a control terminal which is used for collecting data of all sensors and carrying out the analysis and control; the relay station is connected with the control terminal WIF i; the Internet of Things gateway is provided with a WI F i module and a first Bluetooth module, and the Internet of Things gateway is connected with the relay station through the Wi F i module; the multiple sensors are used for the agricultural Internet of Things, each sensor is provided with a second Bluetooth module N , and the maximum value of i is a natural number larger than 2; and the plurality of second Bluetooth modules Ni and the first Bluetooth module form mesh topology connection. According to the invention, a complicated interface is avoided, data can be distributed and collected more reasonably, and a wider area can be monitored in a unified manner.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural Internet of Things, and in particular to a data acquisition device and a data acquisition method for a sensor of the agricultural Internet of Things. Background Art

[0002] The Internet of Things is recognized by the world as the third wave of the world's information industry after computers, the Internet and mobile communication networks. It is a network that realizes the comprehensive interconnection between people, people and things, and things and things based on perception. Behind this, various microchips are implanted in objects, and these sensors are used to obtain various information of the physical world, and then the information is transmitted interactively through various communication networks such as local wireless networks, the Internet, and mobile communication networks, so as to realize the perception of the world. In traditional agriculture, farmers rely on experience and feelings for watering, fertilizing, and spraying pesticides. Today, the production base of facility agriculture sees a different picture: Should fruits and vegetables be watered? How to maintain the precise concentration of fertilizers and pesticides? How to implement on-demand supply of temperature, humidity, light, and carbon dioxide concentration? A series of problems that were once "fuzzy" in different growth cycles of crops are all "precisely" checked in real time by information-based intelligent monitoring systems. Farmers only need to press a switch, make a choice, or completely follow the "instructions" to grow good vegetables and flowers.

[0003] Agricultural Internet of Things, that is, in the greenhouse control system, the temperature sensors, humidity sensors, pH sensors, light sensors, CO2 sensors and other equipment of the Internet of Things system are used to detect the temperature, relative humidity, pH value, light intensity, soil nutrients, CO2 concentration and other physical parameters in the environment, and various instruments are used to display them in real time or participate in automatic control as parameters of automatic control to ensure that crops have a good and suitable growth environment. The realization of remote control enables technicians to monitor and control the environment of multiple greenhouses in the office. The use of wireless networks to measure and obtain the best conditions for crop growth can provide a scientific basis for precise control of greenhouses, so as to achieve the purpose of increasing production, improving quality, adjusting growth cycles, and improving economic benefits.

[0004] After searching, Chinese patent document CN205451442U discloses an agricultural Internet of Things data acquisition terminal with multiple sensor interfaces, which includes an identification module, multiple sensor interfaces connected to the identification module, and multiple sensors connected to the sensor interface. The utility model uses the identification module to connect to multiple sensor interfaces respectively, and identifies each sensor interface respectively, so as to achieve compatibility with multiple sensor interfaces. However, the agricultural Internet of Things data acquisition terminal relies on physical routes, and there will be many connecting lines, resulting in complex interfaces, and it is impossible to uniformly monitor a wider area. The collection range of each sensor is limited, and multiple sensors need to be arranged in a wide area for collecting data.

[0005] Chinese patent document CN206990001U discloses an agricultural Internet of Things multi-sensor integrated data acquisition system, including a logic operation and information processing chip, which is connected to an air temperature and humidity sensor, a light sensor, a carbon dioxide sensor, a soil temperature and humidity sensor, and a pH value / EC ion concentration sensor through an air temperature and humidity sensor interface module, a light sensor interface module, a carbon dioxide sensor interface module, a soil temperature and humidity sensor interface module, and a pH value / EC ion concentration sensor interface module. It also relies on physical routes, and there will be many connecting lines, resulting in a complex interface, and it is impossible to uniformly monitor a wider area. The acquisition range of each sensor is limited, and multiple sensors need to be arranged in a wide area for data collection. Summary of the invention

[0006] In view of this, in order to solve the above-mentioned technical problems, the purpose of the present invention is to propose a data acquisition device and a data acquisition method for sensors for agricultural Internet of Things, which avoids the use of complex interfaces, can more reasonably layout and collect data, and uniformly monitor a wider area.

[0007] The technical solutions adopted are:

[0008] A data acquisition device for a sensor of an agricultural Internet of Things of the present invention comprises:

[0009] Control terminal, which is used to collect data from all sensors and perform analysis and control;

[0010] A relay station, which is connected to the control terminal WIFi;

[0011] An Internet of Things gateway, which is provided with a WiFi module and a first Bluetooth module, and the Internet of Things gateway is connected to the relay station via the WiFi module;

[0012] The sensor is a plurality of sensors for agricultural Internet of Things, each of the sensors is provided with a second Bluetooth module N i, the maximum value of i is a natural number greater than 2; the plurality of second Bluetooth modules N i form a mesh topology connection with the first Bluetooth module.

[0013] Furthermore, the control terminal contains a logic operation and information processing chip.

[0014] Furthermore, the first Bluetooth module and the second Bluetooth module both adopt low-power BLE Bluetooth modules.

[0015] Furthermore, the sensors include air temperature and humidity sensors, light sensors, carbon dioxide sensors, soil temperature and humidity sensors, and pH value / EC ion concentration sensors.

[0016] Furthermore, the control terminal is connected to a display screen.

[0017] A data acquisition method of a data acquisition device of a sensor for agricultural Internet of Things of the present invention comprises the following steps:

[0018] S1. The sensor collects and measures data signals;

[0019] S2. Find the optimal transmission path through the mesh topology of the Bluetooth module and transmit the data signal to the nearest IoT gateway;

[0020] S3. The IoT gateway transmits the data signal to the relay station via WIFI wirelessly;

[0021] S4. The relay station transmits the data signal wirelessly via WIFI to the control terminal for analysis and control.

[0022] Furthermore, it also includes:

[0023] S5. The control terminal controls the sensor to collect the control signal through the same path in the opposite direction.

[0024] Furthermore, in S5, the collection frequency of the sensor is controlled according to the stability of the data to reduce energy consumption.

[0025] The beneficial effects of the present invention are:

[0026] The present invention forms a mesh topology connection with the first Bluetooth module through multiple second Bluetooth modules Ni, so that the second Bluetooth module Ni of each sensor can find the optimal path, transmit the collected data to the Internet of Things gateway in sequence, and then wirelessly transmit it to the relay station through the Internet of Things gateway, and then transmit it to the control terminal for control.

[0027] The IoT gateway is equipped with a WI F i module and a first Bluetooth module, so that the IoT gateway has both short-distance connection of Bluetooth and long-distance connection of WI FI, which makes the IoT gateway improve the rationality and breadth of sensor layout. All sensors are connected through a grid topology, and can find the optimal path to find the IoT gateway, and then realize wireless transmission of sensors.

[0028] In summary, the present invention can avoid using complex interfaces, can more reasonably arrange the data collection, and uniformly monitor a wider area. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0030] Figure 1 The present invention is a structural schematic diagram of a data acquisition device for a sensor used in agricultural Internet of Things.

[0031] Figure 2 The present invention is a flow chart of a data acquisition method of a data acquisition device. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1 As shown, a data acquisition device for sensors of agricultural Internet of Things includes a control terminal 1, a relay station 2, an Internet of Things gateway 3 and a sensor 4.

[0034] The control terminal 1 is used to collect data from all sensors 4 and to analyze and control them. The control terminal may contain a logic operation and information processing chip for logic operation and analysis of the data. The control terminal may be further connected to a display screen for displaying information.

[0035] The relay station 2 is connected to the control terminal 1 via WIFi, and transmits data to the control terminal wirelessly through the relay station.

[0036] The Internet of Things gateway 3 is provided with a WiFi module (WI IF IC) and a first Bluetooth module, and the Internet of Things gateway is connected to the relay station via the WiFi module;

[0037] Sensor 4 is a plurality of sensors for agricultural Internet of Things, each of which is provided with a second Bluetooth module Ni, the maximum value of i being a natural number greater than 2; the plurality of second Bluetooth modules Ni form a mesh topology connection with the first Bluetooth module.

[0038] The mesh topology is formed by the mesh topology. The mesh topology is the physical layout that connects all sensors to each other. Each sensor in the mesh topology acts as a node or as the center of another node. Each center or node contains and records all the addresses of the centers or nodes in the mesh topology.

[0039] For example, the sensors in one area include air temperature and humidity sensors, light sensors, carbon dioxide sensors, soil temperature and humidity sensors, and pH / EC ion concentration sensors. These five sensors have a second Bluetooth module Ni, which are second Bluetooth modules N1, N2, N3, N4, and N5, respectively. Then, the second Bluetooth modules N1, N2, N3, N4, and N5 are connected to form a mesh topology. Each sensor can be a center or a node. For example, N1 is the center, and nodes N2, N3, N4, and N5 are all transmitted around the center of N1. N2 can also be the center, and nodes N1, N3, N4, and N5 are all transmitted around the center of N2. And the optimal path can be found in this mesh topology. It should be noted that N1, N2, N3, N4 and N5 refer to different second Bluetooth modules, thereby referring to different corresponding 5 sensors. For example, the first sensor (air temperature and humidity sensor) corresponds to the second Bluetooth module N1, the second sensor (light sensor) corresponds to the second Bluetooth module N2; the third sensor (carbon dioxide sensor) corresponds to the second Bluetooth module N3, the fourth sensor (soil temperature and humidity sensor) corresponds to the second Bluetooth module N4, and the fifth sensor (pH value / EC ion concentration sensor) corresponds to the second Bluetooth module N5.

[0040] For example, the data collected by the first sensor corresponding to N1 is used to determine the optimal path based on the layout of other sensor locations, as well as the traffic intensity or queuing delay of data transmission. For example, if the transmission path N1→N2→N3 is found to be optimal, Bluetooth transmission of data can be performed based on the optimal path requirements.

[0041] For example, the optimal path can be determined based on adjacent nodes and the minimum queuing delay.

[0042] The mesh topology connects each node to a Bluetooth mesh and can find the optimal path based on the topological mesh structure, effectively improving the reliability of information transmission between nodes.

[0043] Then, the collected data is sent to the IoT gateway through a mesh topology, transmitted to the relay station through the IoT gateway, and then transmitted to the control terminal through the relay station.

[0044] In this way, multiple areas can be laid out according to the size of the area, and each area includes five sensors such as air temperature and humidity sensor, light sensor, carbon dioxide sensor, soil temperature and humidity sensor and pH value / EC ion concentration sensor.

[0045] In this way, multiple IoT gateways can be set up accordingly.

[0046] In this way, the control terminal and the relay station can achieve one-to-one wireless transmission, and then the relay station and the IoT gateway can achieve one-to-many wireless transmission; the IoT gateway and the sensor can achieve one-to-many Bluetooth transmission.

[0047] In this way, the number of sensors in each sub-area is reasonably set. Multiple sub-areas form a wider area.

[0048] In this way, the data acquisition device forms a mesh topology connection with the first Bluetooth module through multiple second Bluetooth modules Ni, so that the second Bluetooth module Ni of each sensor can find the optimal path and transmit the collected data to the Internet of Things gateway in turn, and then wirelessly transmit it to the relay station through the Internet of Things gateway, and then transmit it to the control terminal for control.

[0049] The IoT gateway is equipped with a WI F i module and a first Bluetooth module, so that the IoT gateway has both short-distance connection of Bluetooth and long-distance connection of WI FI, which makes the IoT gateway improve the rationality and breadth of sensor layout. All sensors are connected through a grid topology, and can find the optimal path to find the IoT gateway, and then realize wireless transmission of sensors.

[0050] In summary, the data acquisition device can avoid using complex interfaces, can more reasonably arrange the data collection, and uniformly monitor a wider area.

[0051] As a specific implementation, the first Bluetooth module and the second Bluetooth module both adopt low-power BLE (Bluetooth Low Energy) Bluetooth modules (BLE IC).

[0052] See also Figure 2 As shown, the data acquisition method of the data acquisition device of the sensor for agricultural Internet of Things includes the following steps:

[0053] S1. The sensor collects and measures data signals;

[0054] S2. Use the mesh topology of the Bluetooth module to find the optimal transmission path and transmit the data signal to the nearest IoT gateway. The IoT gateway in the sub-area can collect data transmitted by all sensors in the sub-area.

[0055] S3. The IoT gateway transmits the data signal to the relay station via WIFI wirelessly;

[0056] S4. The relay station transmits the data signal wirelessly via WIFI to the control terminal for analysis and control.

[0057] It may further include S5. The control terminal controls the sensor to collect the control signal through the same path in the opposite direction. That is, the sensor determines the optimal path and transmits it to the control terminal, and the feedback signal of the control terminal can be transmitted to the sensor through the same path but in the opposite direction.

[0058] For example, the path from sensor N1 to the control terminal is: N1→N2→N3→IoT gateway→relay station→control terminal; the path from the control terminal to sensor N1 is: control terminal→relay station→IoT gateway→N3→N2→N1.

[0059] N1→N2→N3 is the optimal path of the first sensor.

[0060] As a preferred embodiment, according to the stability of the data, the control terminal can control the acquisition frequency of the sensor to reduce energy consumption. For example, if the data is stable, the acquisition frequency can be reduced to reduce the energy consumption of the overall data acquisition device. The acquisition frequency is the acquisition frequency per unit time.

[0061] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention. They are not intended to limit the scope of protection of the present invention. All equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A data acquisition device for sensors of agricultural Internet of Things, characterized in that: include: Control terminal, which is used to collect data from all sensors and perform analysis and control; A relay station, which is connected to the control terminal WIFi; An Internet of Things gateway, which is provided with a WiFi module and a first Bluetooth module, and the Internet of Things gateway is connected to the relay station via the WiFi module; Sensors, which are multiple sensors for agricultural Internet of Things, each of which is provided with a second Bluetooth module Ni, and the maximum value of i is a natural number greater than 2; Multiple second Bluetooth modules N i A mesh topology connection is formed with the first Bluetooth module.

2. The data acquisition device of the sensor for agricultural Internet of Things according to claim 1, characterized in that: The control terminal contains a logic operation and information processing chip.

3. The data acquisition device of the sensor for agricultural Internet of Things according to claim 1, characterized in that: The first Bluetooth module and the second Bluetooth module both adopt low-power BLE Bluetooth modules.

4. The data acquisition device of the sensor for agricultural Internet of Things according to claim 1, characterized in that: The sensors include air temperature and humidity sensors, light sensors, carbon dioxide sensors, soil temperature and humidity sensors, and pH value / EC ion concentration sensors.

5. The data acquisition device of the sensor for agricultural Internet of Things according to claim 1, characterized in that: The control terminal is connected with a display screen.

6. A data acquisition method for a data acquisition device of a sensor for agricultural Internet of Things according to any one of claims 1 to 5, characterized in that: The steps include: S1. The sensor collects and measures data signals; S2. Find the optimal transmission path through the mesh topology of the Bluetooth module and transmit the data signal to the nearest IoT gateway; S3. The IoT gateway transmits the data signal to the relay station via WIFI wirelessly; S4. The relay station transmits the data signal wirelessly via WIFI to the control terminal for analysis and control.

7. The data acquisition method of the data acquisition device of the sensor for agricultural Internet of Things according to claim 6, characterized in that: Also includes: S5. The control terminal controls the sensor to collect the control signal through the same path in the opposite direction.

8. The data acquisition method of the data acquisition device of the sensor for agricultural Internet of Things according to claim 7, characterized in that: In S5, the sensor acquisition frequency is controlled according to the stability of the data to reduce energy consumption.

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