CN212588364U

CN212588364U - Intelligent vegetable greenhouse management node supporting NB-IoT and smart phone

Info

Publication number: CN212588364U
Application number: CN202020317396.3U
Authority: CN
Inventors: 郑涛; 万雪芬
Original assignee: Yanshan University; North China Institute of Science and Technology
Current assignee: Yanshan University; North China Institute of Science and Technology
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2021-02-23
Anticipated expiration: 2030-03-13

Abstract

For satisfying the demand of lumped remote management and distributed field management in wisdom vegetable greenhouse planting simultaneously, the utility model discloses a support wisdom vegetable greenhouse management node of NB-IoT and smart mobile phone, its characterized in that, including the MCU who is connected with NB-IoT module and bluetooth module, MCU adopts and is based on ARM 32-bit Cortex^TMSTM32F103ZET6 chips of M3 core. Through the utility model provides a node equipment can effectively gather vegetables canopy room planting parameter, realizes the control to canopy room agricultural electromechanical device, realizes serving remote management person's high in the clouds lumped vegetable canopy room management in the high in the clouds. In field management, an operator can use a smartphone with an App installed to implement distributed management function operations within a local environment. The test result shows that the system runs stably and reliably, and can effectively support the requirement of intelligent agricultural greenhouse management.

Description

Intelligent vegetable greenhouse management node supporting NB-IoT and smart phone

Technical Field

The utility model relates to a nodal equipment for management of wisdom vegetable greenhouse room, this nodal equipment support NB-IoT and smart mobile phone.

Background

Most of national agriculture shed room production operators are small and medium-sized individual farmers taking families as units, and production management is influenced by factors such as scattered shed room space positions, limited agricultural investment, pending improvement of informatization knowledge level and the like. With the continuous deepening of fine management in the agricultural production process, a data channel between a greenhouse Internet of things service mode and a terminal needs to be further optimized. In order to adapt to the current situation, an effective wireless interconnection means which can support the access of a large number of greenhouse internet of things terminals in a large space range, has low cost, low implementation complexity and high operation reliability needs to be realized.

An NB-IoT technology developed by an LTE (Long Term evolution) technology can provide effective support for wireless interconnection of mass terminals in the agricultural field. The method has the advantages of excellent coverage, low terminal module cost, simple daily maintenance, support of access of massive terminals, low energy consumption and the like. The characteristics of data transmission in the agricultural environment are consistent with the characteristics of low frequency, high time delay, limited data volume and the like of NB-IoT data transmission. The NB-IoT has the advantages that the method is particularly suitable for the requirements of wide-coverage, low-cost and massive-access wireless data network construction in vast rural areas in China.

The traditional agricultural lumped management mode is not completely matched with the daily production habits of agricultural producers and the distributed management requirements in the agricultural situation. If the distributed management in the agricultural situation can be realized on the premise of ensuring the lumped management function, the management efficiency and the service effect of agricultural macro managers and field operators can be improved to a greater extent. If support can be provided for distributed agricultural management by means of mobile intelligent equipment such as a smart phone which is widely used in farmers, the method can adapt to the current situation of greenhouse production in China in the aspects of usability, construction and use cost, distributed support and the like.

Disclosure of Invention

The utility model aims at providing a can satisfy node equipment of agricultural distributed management demand.

In order to achieve the above object, the technical solution of the present invention is to provide a smart vegetable greenhouse management node supporting NB-IoT and smart phone, which is characterized in that, including the MCU connected with NB-IoT module and bluetooth module, the MCU is adapted based on ARM 32-bit Cortex^TMSTM32F103ZET6 chips of M3 kernel;

the MCU adopts an RS485 bus constructed by SP3485 to pass through: a single-bus digital temperature and humidity sensor AM2306 collects the temperature of the indoor and outdoor environment of the greenhouse; the method comprises the steps that an illumination intensity sensor BH1750FVI obtains sunlight irradiation data; an air speed sensor SM5385B and a wind direction sensor SM5384B supporting a ModBus-RTU protocol monitor wind speed data and wind direction data; acquiring soil moisture and temperature data by a soil moisture and temperature sensor SM 2802; the MCU generates a logic control signal to drive the relay G5LA-14 channel control corresponding to the use of the optical-coupling isolation EL817C to reliably control the agricultural electromechanical equipment.

Preferably, the NB-IoT module is a WH-NB75-B5 based on Boudica chip.

Preferably, the Bluetooth module is an HC-08 wireless Bluetooth communication module which is based on a CC2540 chip and supports a Bluetooth 4.0 low-power-consumption communication protocol.

The utility model provides a support intelligent vegetables canopy room management node of NB-IoT and smart mobile phone, through the utility model provides a management system that node equipment constitutes can realize the interconnection of vegetables canopy room thing networking information terminal in a large scale, supports simultaneously that agricultural canopy room operator carries out the distributed management in each agricultural situation through the smart mobile phone to and realize carrying out lumped formula centralized management to vegetables canopy room in a large scale.

Drawings

Fig. 1 is a schematic structural diagram of a smart vegetable greenhouse management node supporting NB-IoT and a smart phone according to the present invention.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

In order to improve terminal and execution terminal density and the degree of becoming more meticulous in the vegetables canopy room, realize terminal node and remote control end and the reliable communication of cell-phone App under the complicated agricultural environment, as shown in fig. 1, the utility model discloses a terminal node suitable for monitoring management in the vegetables canopy room. The terminal node comprises an MCU (microprogrammed control Unit) which adopts a mode based on ARM 32-bit Cortex^TMSTM32F103ZET6 chips of M3 core. The high working frequency, the low power consumption characteristic, the wide working temperature range and the abundant interfaces provide powerful support for effectively realizing the node functions in the complex greenhouse agricultural environment. As the greenhouse vegetable planting has higher requirements on temperature and humidity, the nodes adopt a single bus (1-Wire) digital temperature and humidity sensor AM2306 with better weather-resistant and spray-resistant characteristics to collect the indoor and outdoor environmental temperatures of the greenhouse. The temperature measuring range of the sensor is-40 to +125 ℃, the error is +/-0.3 ℃, the humidity measuring range is 0 to 99.9 percent, and the error is +/-2 percent, so that the temperature and humidity monitoring requirement of most vegetable greenhouse planting environment can be met. In order to evaluate the illumination distribution in the greenhouse after sunlight transmits through glass or a greenhouse film, the node acquires sunlight irradiation data through a BH1750FVI illumination intensity sensor. The lower cost of BH1750FVI helps to include canopy and roots of vegetables at multiple locations within the shedA plurality of monitoring points are distributed at the positions such as the parts, so that macroscopic observation of greenhouse vegetable illumination factors can be more reliably formed. In order to provide an alarm when the greenhouse encounters strong wind, the nodes adopt SM5385B and SM5384B wind speed and wind direction sensor monitoring corresponding data supporting the ModBus-RTU protocol. The MCU obtains the sensor data through an RS485 bus constructed by SP 3485. The soil moisture and temperature sensor SM2802 can also be accessed to the MCU through the RS-485 channel. In order to reliably control a greenhouse water pump, an exhaust fan and the like, after the nodes receive instructions sent by a cloud server or a smart phone, the MCU generates logic control signals to drive corresponding 4 paths of relays G5LA-14 which are optically isolated by using EL 817C.

And the field terminal node adopts NB-IoT and Bluetooth low energy to respectively meet the data transmission requirements of remote lumped management and field distributed management. The greenhouse monitoring data and the cloud remote control information collected by the nodes are transmitted through an NB-IoT data channel. The field communication between the smart phone and the node is realized by Bluetooth. The node NB-IoT module adopts a WH-NB75-B5 based on Boudica chip. The module communicates with the MCU through a serial interface with a baud rate of 9600 bps. WH-NB75-B5 works in 850MHZ frequency band and adapts telecommunication NB-IoT Internet of things card. The peak power consumption of the module is 0.3A/3.8V, and the dormant power consumption can be as low as 5uA/3.8V when no data exists. The module supports UDP/CoAP network communication protocol. The system uses CoAP communication protocol based on request/response model to transmit data. The CoAP communication protocol takes UDP as a transport layer protocol, and the obvious reduction of communication overhead makes the CoAP communication protocol suitable for application of the Internet of things. The extended discontinuous reception mode in use takes a value of 5 minutes. After power-on, the node automatically realizes NB-IoT network access. In NB-IoT communication, the greenhouse monitoring data acquired periodically are packaged by the MCU and checked by combining CRC-8, uploaded to a remote cloud server through an NB-IoT information channel, and meanwhile, control instructions sent by a cloud are received and integrity judgment is carried out, so that control operation is executed. The reliable communication between the terminal node and the cloud server is realized through the process. The NB-IoT information interaction period is set by the MCU timer. The node Bluetooth module selects an HC-08 wireless Bluetooth communication module which is based on a CC2540 chip and supports a Bluetooth 4.0 low-power-consumption communication protocol. The microcontroller communicates with the bluetooth module in a serial port mode (the baud rate is 9600 bps). The HC-08 working voltage is 3.2-6V, the dormancy current is as low as 0.4uA in the low power consumption mode, the communication distance which can reach 80m at most in the open environment is achieved, and the requirements of long-time work of the node and high-reliability communication between the smart phone and the terminal node are met.

Claims

1. The intelligent vegetable greenhouse management node is characterized by comprising an MCU (microprogrammed control unit) connected with an NB-IoT module and a Bluetooth module, wherein the MCU adopts a mode based on ARM 32-bit Cortex^TMSTM32F103ZET6 chips of M3 kernel;

2. The intelligent vegetable shelter management node supporting NB-IoT and smart phones according to claim 1, wherein the NB-IoT module is selected from WH-NB75-B5 based on Boudica chip.

3. The intelligent vegetable greenhouse management node supporting NB-IoT and smart phones according to claim 1, wherein the Bluetooth module is selected from HC-08 wireless Bluetooth communication module supporting Bluetooth 4.0 low power consumption communication protocol based on CC2540 chip.