CN206833234U - A kind of greenhouse comprehensive test instrument - Google Patents

Abstract

The utility model proposes a greenhouse environment comprehensive measuring instrument, including: a greenhouse environment data acquisition module, a central processing unit and a server; the central processing unit includes: a data synchronous acquisition module, a GPS positioning module, a human-computer interaction module, a GPRS remote transmission module, USB device interface, DSP core processing module; the output end of the greenhouse environment data acquisition module is connected to the input end of the data synchronous acquisition module, the output end of the data synchronous acquisition module is connected to the input end of the DSP core processing module, and the GPS positioning module through the serial communication port Connect the DSP core processing module, the GPRS remote transmission module is connected to the DSP core processing module through the serial communication port, the USB device interface is connected to the input end of the DSP core processing module, the input end of the human-computer interaction module is connected to the output end of the DSP core processing module, The GPRS remote transmission module is connected to the server through the network; the system integrates the functions of synchronous data collection, data processing, position positioning and data remote transmission, completes various functions, and has the function of remote data collection terminal.

Description

A greenhouse environment comprehensive measuring instrument

technical field

The utility model belongs to the technical field of facility agriculture, in particular to a greenhouse environment comprehensive measuring instrument.

Background technique

The control of the greenhouse environment is a part of smart agriculture, which plays an important role in meeting the needs of urban consumer groups, reducing planting risks, making full use of natural light sources, and promoting advanced agricultural technologies. In order to ensure that the greenhouse environment meets the requirements of crop growth, it is of great significance to conduct online or offline detection of the greenhouse environment, and evaluate the quality of the greenhouse environment based on expert experience to guide agricultural production.

The current market instruments generally have the following disadvantages:

(1) The existing greenhouse environment comprehensive tester cannot simultaneously measure multiple environmental data, and lacks the evaluation of the greenhouse environment based on the measurement data, which lacks guiding significance for users;

(2) The existing greenhouse environment comprehensive tester lacks the function of remote transmission of test data, so the detected data cannot be stored for a long time; at the same time, because the comprehensive tester is a fluid measurement, it lacks the positioning function of the measurement location;

(3) Due to the inaccurate data measured by the sensors, if the quality assessment of the greenhouse environment is to be completed based on the inaccurate data of these measurements, an evaluation technology based on inaccurate data is needed, and this technology is currently lacking in theory and practice .

In view of the above problems, the utility model designs a new type of greenhouse environment comprehensive data measuring instrument, which completes the synchronous measurement of multiple factors of the greenhouse environment based on various sensors; adds GPS positioning function, and completes the positioning of the measurement site and the recording of the measurement time; Using the interval random vector function to connect the RVFL (Random Vector Functional Link) neural network model, develop a greenhouse environment assessment model based on inaccurate data, realize the quality assessment of the greenhouse environment, and give the reliability of the assessment for users' reference. At present, the greenhouse environment comprehensive tester based on the interval RVFL neural network evaluation model has not been seen in the research and application at home and abroad.

Utility model content

Aiming at the deficiencies of the prior art, the utility model proposes a greenhouse environment comprehensive measuring instrument.

A greenhouse environment comprehensive measuring instrument, comprising: a greenhouse environment data acquisition unit, a central processing unit and a server;

The central processing unit includes: a data synchronous acquisition module, a GPS positioning module, a human-computer interaction module, a GPRS remote transmission module, a USB device interface, and a DSP core processing module;

The output end of the greenhouse environment acquisition unit is connected to the input end of the data synchronous acquisition module, the output end of the data synchronous acquisition module is connected to the input end of the DSP core processing module, and the GPS positioning module is connected to the DSP core processing module through the serial communication port module, the GPRS remote transmission module is connected to the DSP core processing module through a serial communication port, the USB device interface is connected to the input of the DSP core processing module, and the input of the human-computer interaction module is connected to the output of the DSP core processing module terminal, the GPRS remote transmission module is connected to the server through the network;

The greenhouse environment collection unit is used to collect greenhouse environment parameters in real time;

The data synchronous acquisition module is used to transmit the synchronously acquired greenhouse environment parameters to the DSP core processing module in real time;

The GPS positioning module is used to collect the collection time and place of the current greenhouse environment parameters, and transmit the time and place to the DSP core processing module;

The human-computer interaction module is used for information interaction with the DSP core processing module, displaying the greenhouse environment parameters collected in real time, selecting the working status, and selecting the collected greenhouse environmental parameters; the working status includes: online status and offline status;

The GPRS remote transmission module is used to realize the communication between the DSP core processing module and the server, and transmit the greenhouse environment parameters collected in real time to the server;

The USB device interface is used to provide a channel for accessing a USB storage device;

The DSP core processing module is used to establish an interval RVFL network model, uses the interval value of the greenhouse environment parameter and the interval value of the corresponding greenhouse environment quality level as a training sample, trains the interval RVFL network model, and determines the interval RVFL network model after training ; According to the real-time collection of greenhouse environmental parameters in the current environment as the input of the trained interval RVFL network, the greenhouse environmental quality level and its credibility in the current environment are obtained.

The environmental parameters of the greenhouse include: air temperature, air humidity, carbon dioxide concentration, light intensity, soil temperature, and soil humidity.

The greenhouse environment collection unit includes: an air temperature sensor, a soil temperature sensor, an air humidity sensor, a soil humidity sensor, a light intensity sensor, and a carbon dioxide sensor.

The beneficial effects of the utility model:

The utility model is based on a comprehensive measuring instrument for greenhouse environment. The system integrates the functions of synchronous data collection, data processing, position positioning and data remote transmission, completes various functions, plays the role of assistant for users, and remote data The function of the collection terminal; the utility model realizes that when the greenhouse environment comprehensive measuring instrument is in the online state, the greenhouse environment comprehensive measuring instrument directly uploads the greenhouse environment monitoring data and evaluation results to the remote server; when the greenhouse environment comprehensive measuring instrument is in the offline state At the same time, the greenhouse environment comprehensive tester stores the greenhouse environment monitoring data information and evaluation results in the local USB storage device in sequence according to time and place. After the greenhouse environment comprehensive tester is connected to the network, the greenhouse environment monitoring data information and evaluation The results are synchronized to the server.

Description of drawings

Fig. 1 is the structural block diagram of the greenhouse environment comprehensive measuring instrument in the specific embodiment of the present invention;

Fig. 2 is the circuit schematic diagram of the greenhouse environment comprehensive measuring instrument in the specific embodiment of the present invention;

detailed description

Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in detail.

A greenhouse environment comprehensive measuring instrument, as shown in Figure 1, includes: a greenhouse environment data acquisition unit, a central processing unit and a server.

The central processing unit includes: a data synchronous acquisition module, a GPS positioning module, a human-computer interaction module, a GPRS remote transmission module, a USB device interface, and a DSP core processing module.

As shown in Figure 2, the output end of the greenhouse environment acquisition unit is connected to the input end of the data synchronous acquisition module, the output end of the data synchronous acquisition module is connected to the input end of the DSP core processing module, and the GPS positioning module passes the serial The communication port is connected to the DSP core processing module, the GPRS remote transmission module is connected to the DSP core processing module through the serial communication port, the USB device interface is connected to the input end of the DSP core processing module, and the input end of the human-computer interaction module is connected to the DSP core processing module. The output end of the DSP core processing module, the GPRS remote transmission module is connected with the server through the network.

The greenhouse environment collection unit is used for real-time collection of greenhouse environment parameters.

The greenhouse environment collection unit includes: an air temperature sensor, a soil temperature sensor, an air humidity sensor, a soil humidity sensor, a light intensity sensor, and a carbon dioxide sensor.

In this embodiment, both the air temperature sensor and the soil temperature sensor are thermocouple temperature sensors, supplemented by a cold junction compensation circuit connected to the input end of the data synchronization acquisition module, and the output analog voltage signal is sent to the DSP core processing module.

In this embodiment, the thermocouple temperature sensor probe has a cylindrical metal shell with a length of 30 mm, a diameter of the bottom surface of 3 m, and a data cable with a length of 3 m. When measuring the air temperature, place the air temperature sensor directly in the air; when measuring the soil temperature, bury the soil temperature sensor probe at the root of the plant below the soil surface. The thermocouple temperature sensor used is a compression spring temperature sensing element, which has the advantages of good vibration resistance, high temperature measurement accuracy, high mechanical strength, good pressure resistance, reliable and stable performance, etc.

In this embodiment, the model of the air humidity sensor is SHT10. SHT10 transmits the digital signal to the DSP core processing module through the serial IIC interface. The SHT10 is made into a probe shape, and the unique package surface of the SHT10 allows it to be used in a condensation environment.

In this embodiment, the soil moisture sensor is a CSF11 soil moisture sensor. The CSF11 soil moisture sensor outputs an analog voltage signal and transmits it to the DSP core processing module through the data synchronization acquisition module. The CSF11 soil moisture sensor is a cylindrical package with a length of 109mm and a diameter of 40mm. There are four metal probes with a length of 60mm and a diameter of 3mm at the bottom. Insert the soil moisture sensor vertically into the soil to be measured, and ensure that the metal probe is fully inserted into the soil to measure the soil moisture in the greenhouse environment.

In this embodiment, the model of the light intensity sensor is BH1750FVI, and the output digital signal of the BH1750FVI light intensity sensor is transmitted to the DSP core processing module through the IIC bus. The BH1750FVI light intensity sensor is a hemispherical package with an inner diameter of 22mm, an outer diameter of 26mm, an outer edge diameter of 28.5mm, and a height of 18mm. The sensor is sealed on the surface of the greenhouse environment comprehensive measuring instrument with insulating silica gel, and the light intensity in the greenhouse environment can be measured by exposing the hemispherical package to the greenhouse environment.

In this embodiment, the carbon dioxide sensor selected is the S-100 carbon dioxide sensor. The output digital signal of S-100 carbon dioxide sensor is transmitted to the DSP core processing module through the IIC bus. The overall dimensions of the S-100 carbon dioxide sensor are 32mm (length) × 12mm (width) × 38mm (height). The S-100 carbon dioxide sensor is attached with a layer of dialysis membrane on the outside of the greenhouse environment comprehensive measuring instrument to measure the concentration of carbon dioxide in the greenhouse environment.

The environmental parameters of the greenhouse include: air temperature, air humidity, carbon dioxide concentration, light intensity, soil temperature, and soil humidity.

The data synchronous acquisition module is used to transmit the synchronously acquired greenhouse environment parameters to the DSP core processing module in real time.

The GPS positioning module is used to collect the collection time and location of the current greenhouse environment parameters, and transmit the time and location to the DSP core processing module.

In this embodiment, the main function of the GPS positioning module is to provide time and place reference for the greenhouse environment comprehensive measuring instrument, and the GPS positioning module performs information exchange with the DSP core processing module through the serial communication port. When in the online state, use the GPS positioning module to obtain the time and location sequence, record the collection time and location of the current greenhouse environmental data, and use this time and location as part of the greenhouse environmental monitoring data information, and use this information as a judgment The reference for whether the uploaded greenhouse environment monitoring data and evaluation results are valid; when offline, the time and location information obtained by the GPS positioning module are sequentially stored in the local USB storage device.

The human-computer interaction module is used for information interaction with the DSP core processing module, displaying the greenhouse environment parameters collected in real time, selecting the working state, and selecting the collected greenhouse environment parameters; the working state includes: online state and offline state.

In this embodiment, the human-computer interaction module adopts the combination of LCD color screen and buttons as the interface of human-computer interaction. The function of the LCD color screen is to carry out information interaction with the DSP core processing module, display the greenhouse environment parameters collected in real time, select the working status, Select the collected greenhouse environmental parameters. The LCD color screen and buttons are connected to the DSP core processing module through the data signal line for information interaction. Compared with the touch screen, the button is more suitable for the application in the actual greenhouse environment. The touch screen can only be used normally when it is exposed to the air. In the dew condensation environment, the dew will cause the touch screen to be falsely triggered, and the button can be sealed under the function panel to avoid Prevent misuse and improve reliability.

In this embodiment, there are two display modes of the human-computer interaction module. Method 1: The digital form is displayed on the screen, and each set of greenhouse environmental data collected is immediately refreshed on the screen; Method 2: The greenhouse environmental data collected by each sensor is displayed in a rectangular coordinate system with curves of different colors. The greenhouse environmental data collected by each sensor depicts the change trend of its corresponding greenhouse environmental parameters over a period of time.

The GPRS remote transmission module is used to realize the communication between the DSP core processing module and the server, and transmit the real-time collected greenhouse environment parameters to the server.

In this embodiment, the GPRS remote transmission module uses a GPRS DTU wireless serial port data transmission module, which is connected with the DSP core processing module through a serial communication port. This module has built-in GPRS wireless module and provides standard RS232/485 data interface. Realize the reliable and efficient transmission of data between the greenhouse environment comprehensive tester and the server.

The USB device interface is used to provide a channel for accessing a USB storage device.

In this embodiment, when the greenhouse environment comprehensive measuring instrument is in an offline state that needs to record the greenhouse environment monitoring data by itself, the greenhouse environment comprehensive measuring instrument adds the time and place sequence generated by the GPS positioning module to the greenhouse environment monitoring data information sequence, and according to the time The sequence is stored in the local USB storage device, which is convenient for further analysis and processing of the data.

The DSP core processing module is used to establish an interval RVFL network model, uses the interval value of the greenhouse environment parameter and the interval value of the corresponding greenhouse environment quality level as a training sample, trains the interval RVFL network model, and determines the interval RVFL network model after training ; According to the real-time collection of greenhouse environmental parameters in the current environment as the input of the trained interval RVFL network, the greenhouse environmental quality level and its credibility in the current environment are obtained.

In this embodiment, the DSP digital processing chip adopted by the DSP core processing module is TMS320F28335. The main task of the DSP core processing module is to coordinate the cooperation among the various modules, and send the greenhouse data collected by the data synchronous acquisition and human interaction system to the DSP through the analog interface and the digital interface, and use the interval RVFL neural network evaluation model algorithm to give evaluation As a result, the recorded greenhouse environment data and evaluation results are sent to the LCD color screen, which is convenient for users to keep abreast of the current greenhouse environment.

In this embodiment, the power supply part adopts a power supply scheme with an external 24V DC power supply and a 24V battery to ensure that the greenhouse environment comprehensive tester can work stably for a long time. Only one of the two is in working condition, and it is powered by 24V DC power supply by default. When powered by an external 24V DC power supply, the charging circuit of the greenhouse environment comprehensive tester selects whether to charge the battery through the charging circuit according to the current state of the 24V battery. After DC-DC conversion, the output voltage is 12V, and the chip selected for the 12V-5V voltage regulator circuit is the LM1084 low-dropout linear voltage regulator; the chip selected for the 12V-3.3V voltage regulator circuit is the AMS1117 low-dropout linear voltage regulator; 12V-2.5V The chip used in the regulator circuit is LM1084 low dropout linear regulator.

In this embodiment, the casing is a rectangular parallelepiped plastic box with partial openings and a handle. After the circuit modules of various parts of the greenhouse environment comprehensive tester are installed inside the plastic casing, processing such as filming and sealing is performed. The partial opening is to provide space for the human-machine interaction interface and the detection of the sensor. It is equipped with a handle to facilitate the operator to carry it. The film is pasted and sealed to ensure that no water vapor or direct water enters the inside of the greenhouse environment comprehensive tester, and then ensures the comprehensive greenhouse environment test. The circuit modules of each part of the instrument will not fail to work due to damp or water. There is a slot for a mercury thermometer on the outside of the plastic case, which is convenient for the operator to use the mercury thermometer to calibrate the temperature.

The process of using the above-mentioned greenhouse environment comprehensive test instrument to conduct a comprehensive greenhouse environment test is as follows:

Select the working status and the collected greenhouse environmental parameters through the human-computer interaction module;

Open the greenhouse environment data collection module to collect the greenhouse environment parameters;

Through the data synchronous acquisition module, the synchronously collected greenhouse environmental parameters are transmitted to the DSP core processing module in real time;

The real-time collected greenhouse environmental parameters are displayed through the human-computer interaction module;

Collect the time and location of the current greenhouse environment data collection through the GPS positioning module, and transmit the time and location to the DSP core processing module;

The interval RVFL network model is established through the DSP core processing module, and the interval value of the greenhouse environmental parameters and the interval value of the corresponding greenhouse environmental quality level are used as training samples to train the interval RVFL network model and determine the interval RVFL network model after training; according to the real-time collection Greenhouse environmental parameters in the current environment are used as the input of the trained interval RVFL network to obtain the greenhouse environmental quality level and its credibility in the current environment;

In this embodiment, the environmental parameters of the greenhouse include: air temperature, air humidity, carbon dioxide concentration, light intensity, soil temperature, and soil humidity.

Convert the collected air temperature, air humidity, soil temperature, soil moisture, carbon dioxide concentration and light intensity into interval values, using Indicates the i-th detection quantity, where z _i represents the lower limit of the i-th interval parameter value, Indicates the upper limit of the i-th interval parameter value, i∈[1, l], l is the total number of detection quantities.

In this embodiment, at the same time, the four greenhouse environmental quality levels are relabeled with vectors and used as the expected output value of each group of collected signals. When the environmental quality level is I, its corresponding expression is [1 0 0 0]; the environmental quality When the assessment level is II, its corresponding expression is [0 1 0 0]; when the environmental quality assessment level is III, its corresponding expression is [0 0 10]; when the environmental quality assessment level is IV, its corresponding The representation of is [0 0 0 1].

In this embodiment, the environmental quality of the greenhouse is graded into four categories: I (excellent), II (good), III (medium), and IV (poor), and the grades are evaluated based on expert experience.

When the working status is online, upload the collected greenhouse environmental parameters, the greenhouse environmental quality level and its credibility under the current environment to the server database through the GPRS remote transmission module, and the work ends;

When the working status is offline, the collected environmental parameters of the greenhouse, the environmental quality level of the greenhouse under the current environment and its reliability are stored in the local USB storage device, and when the network status is good, the GPRS remote transmission module is sent to In the server database, the job ends.

Claims (3)

1. A kind of 1. greenhouse comprehensive test instrument, it is characterised in that including：Greenhouse data acquisition unit, CPU and Server；

   The CPU, including：Synchronous data sampling module, d GPS locating module, human-computer interaction module, GPRS teletransmissions Module, USB device interface, DSP core processing module；

   The input of the output end connection synchronous data sampling module of the greenhouse data acquisition unit, the data syn-chronization The input of the output end connection DSP core processing module of acquisition module, the d GPS locating module are connected by serial communication port DSP core processing module, the GPRS remote-transmission modules connect DSP core processing module, the USB device by serial communication port Interface is connected with the input of DSP core processing module, the input connection DSP core processing module of the human-computer interaction module Output end, the GPRS remote-transmission modules are connected by network with server；

   The greenhouse data acquisition unit, for gathering greenhouse environment parameter in real time；

   The synchronous data sampling module, for the greenhouse environment parameter real-time Transmission of synchronous acquisition to DSP core to be handled into mould Block；

   The d GPS locating module, passed for gathering acquisition time, the place of current greenhouse environment parameter, and by this time, place Transport to DSP core processing module；

   The human-computer interaction module, for carrying out information exchange with DSP core processing module, show the greenhouse gathered in real time Parameter, select working condition, the greenhouse environment parameter of selected collection；The working condition includes：Presence and off-line state；

   The GPRS remote-transmission modules, for realizing the communication between DSP core processing module and server, the temperature that will gather in real time Room environmental parameter is transmitted to server；

   The USB device interface, for providing the passage of USB storage device access；

   The DSP core processing module, for establishing section RVFL network models, by greenhouse environment parameter interval value and corresponding The interval value of greenhouse credit rating trains section RVFL network models, it is determined that the section after training as training sample RVFL network models；According to the greenhouse environment parameter under real-time collection current environment as the defeated of the section RVFL networks after training Enter, obtain greenhouse credit rating and its confidence level under current environment.
2. 2. greenhouse comprehensive test instrument according to claim 1, it is characterised in that the greenhouse environment parameter, including：Air Temperature, air humidity, gas concentration lwevel, intensity of illumination, the soil moisture, soil moisture.
3. 3. greenhouse comprehensive test instrument according to claim 1, it is characterised in that the greenhouse data acquisition unit, Including：Air temperature sensor, soil temperature sensor, air humidity sensor, soil humidity sensor, intensity of illumination sensing Device, carbon dioxide sensor.