CN102436219A - Control machine of cultivation environment field monitoring system - Google Patents

Abstract

The invention relates to a control machine of a cultivation environment on-site monitoring system, comprising a microprocessor, one or more input modules, one or more output modules, and a system bus, the one or more input modules, the one or more A plurality of output modules and the microprocessor are connected to the system bus. Wherein, the one or more input modules are connected to information collection sensors on the cultivation environment site, and are used to collect environmental parameters and climate parameters on the cultivation environment site. The processor generates a control signal based on the environmental parameter and the climate parameter. The one or more output modules are connected to actuators on the cultivation environment site, and are used to drive the actuators according to the control signals of the processor. The control machine of the present invention has an independent control function and can continue to work when the upper host stops working.

Description

The control machine of the field monitoring system of the cultivation environment

technical field

The invention belongs to the field of facility agricultural environment control, and in particular relates to a control machine for an on-site monitoring system of farmland and facility cultivation environment.

Background technique

With the improvement of the technological level of protected agriculture, the protected cultivation environment should monitor environmental parameters including temperature, humidity, _CO2 concentration, light intensity, wind speed, soil water content, soil salinity and PH/EC of nutrient solution. In addition, it is necessary to monitor climate parameters such as outdoor temperature, humidity, light intensity, wind speed, wind direction, and rain intensity. Then, the adjustment and control of parameters such as indoor temperature, humidity, ventilation, supplementary light intensity, irrigation water demand and fertilizer consumption are completed through the growth and development of different crops in the facility.

However, the traditional facility cultivation environment control is to directly input the output signal of the information acquisition sensor in the system into the microcomputer through the transmitter, and the microcomputer calculates and processes the actuator directly according to the pre-programmed control method. This kind of direct control is generally suitable for control systems with fewer control points, and cannot cope with the above-mentioned complex control. However, if the above-mentioned tedious and complicated parameter control relies on manual adjustment, it needs to consume more human resources, and it is not easy to accurately control and scientific overall management, and remote monitoring is more prone to parameter deviation, lag and error.

Therefore, it is desired to provide a control machine applied to a cultivation environment on-site monitoring system to realize regulation and control of farmland and facility cultivation environment.

Contents of the invention

The technical problem to be solved by the present invention is to provide a control machine of a cultivation environment on-site monitoring system, which has an independent control function.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is to propose a control machine of a cultivation environment on-site monitoring system including a microprocessor, one or more input modules, one or more output modules, and a system bus. The one or more input modules, the one or more output modules and the microprocessor are all connected to the system bus. Wherein, the one or more input modules are connected to information collection sensors on the cultivation environment site, and are used to collect environmental parameters and climate parameters on the cultivation environment site. The processor generates a control signal based on the environmental parameter and the climate parameter. The one or more output modules are connected to actuators on the cultivation environment site, and are used to drive the actuators according to the control signals of the processor.

In the above-mentioned control machine of the on-site cultivation environment monitoring system, the one or more input modules include an analog input module and a switch input module.

In the above-mentioned control machine of the on-site cultivation environment monitoring system, the one or more output modules include an analog output module and a switch output module.

In the control machine of the above-mentioned on-site cultivation environment monitoring system, the above-mentioned microprocessor is connected with a programmer.

In the control machine of the above-mentioned on-site cultivation environment monitoring system, a user program memory is also included for the microprocessor to read the user program.

In the above-mentioned control machine of the on-site cultivation environment monitoring system, an independent power supply module is also included for supplying power to the above-mentioned control machine.

In the control machine of the above-mentioned on-site cultivation environment monitoring system, a lightning strike protection component is also included.

In the controller of the above-mentioned cultivation environment on-site monitoring system, the above-mentioned environmental parameters include any combination of the following: temperature, humidity, _CO2 concentration, light intensity, wind speed, soil water content, soil salinity and nutrient solution PH/EC.

In the controller of the above-mentioned on-site cultivation environment monitoring system, the above-mentioned climate parameters include any combination of the following: outdoor temperature, humidity, wind speed, wind direction, and rain intensity.

Due to the adoption of the above technical scheme, the present invention enables the control machine to have an independent control function, so that all control functions can be independently completed when the upper host stops working and the communication is completely cut off, thus ensuring the continuity and reliability of the control .

Description of drawings

In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is a composition block diagram of a control machine of a cultivation environment on-site monitoring system according to an embodiment of the present invention.

Fig. 2 is a block diagram of the composition of the farmland and facility vegetable cultivation environment monitoring system using the on-site monitoring system controller according to an embodiment of the present invention.

Detailed ways

The working principle of the control machine of the protected cultivation site monitoring system of the present invention will be further described in detail below.

Please refer to Fig. 1, wherein in the dotted frame is facility cultivation environment site monitoring system control machine 100 of the present invention, and it comprises microprocessor 102, analog quantity input module 104, analog quantity output module 106, switch quantity input module 108, switch quantity Output module 110, bus 112, user program memory 114, power supply module 116 and other functional modules.

The analog input module 104 is an analog-to-digital conversion module, so as to convert the collected analog signals into required digital signals. The analog output module 106 is a digital-to-analog conversion module for converting the digital signal of the microprocessor into an analog signal capable of driving the actuator.

The control machine 100 may also include a serial port communication module to communicate with a programmer 120 , a computer programmable terminal or peripheral equipment 122 .

The control machine of the on-site monitoring system includes software running on the above-mentioned hardware architecture. Software may include system applications, programming languages, and programming support tool software. For example, software may be stored in user program memory 114 or a similar memory and loaded into microprocessor 102 for execution.

The microprocessor 102 is the control center of the on-site monitoring system control machine 100, and it is composed of a controller and an arithmetic unit. The controller is a component used to uniformly command and control the work of the on-site control machine. An arithmetic unit is a component that performs operations such as logic and arithmetic. The control machine 100 makes the whole machine work in coordination under the control of the microprocessor 102, so as to realize the control of various devices on site.

The microprocessor 102 receives and stores the user program and data entered from the programmer according to the functions assigned by the system program. Microprocessor 102 checks the status of power, memory, I/O, and watchdog timers, and can diagnose syntax errors in user programs. When the control machine 100 is put into operation, the microprocessor 102 first receives the status or data of each input device on site in a scanning manner, and stores them in the I/O image area respectively, and then reads the stored data from the user program memory 114 one by one. The user program, after command interpretation, executes tasks such as logic or arithmetic operations according to the instructions, and sends the results of logic or arithmetic operations to the I/O image area or data register. After all the user programs have been executed, the data in each output or output register in the I/O image area is finally transmitted to the corresponding output device, and the cycle runs like this until it stops running.

In one embodiment, microprocessor 102 adopts Toshiba TMP93CS41F 16bit microprocessor. The communication bus of the microprocessor is the C-BUS bus protocol based on RS485 Token Ring, and the communication rate is from 9600 baud to 1 megabaud (921.6 kilobaud). Each controller can monitor up to 128 physical points and 256 virtual points.

Analog input modules, output modules 104, 106, digital input modules, output modules 108, 110 are directly connected with the data acquisition sensors 130 of the cultivation environment, equipment drive actuators 132, etc., read sensor parameters, and output signals to control execution The device 132 operates. These parameters include but are not limited to: environmental parameters such as temperature, humidity, _CO2 concentration, light intensity, wind speed, soil water content, soil salinity and nutrient solution PH/EC, as well as outdoor temperature, humidity, wind speed, wind direction, rain intensity and other climate parameter. The actuator 132 may include but not limited to: roof windows, side windows, circulation exhaust fans and strong circulation exhaust devices, inner sunshade nets, temperature and humidity adjustment devices of the greenhouse.

Since the control machine 100 is usually in an outdoor environment, in one embodiment, the control machine 100 also includes lightning protection components. Lightning protection components may mainly consist of dedicated fast absorbing devices.

The control machine 100 has a casing (not shown in the figure) to accommodate various electronic devices therein. The shell has the effect of electromagnetic shielding, but the signal of the field sensor and the output signal of the control machine can be communicated bidirectionally through the wireless transmission device through the exposed antenna. In addition, the shell can be grounded as a discharge channel for lightning strike energy. In a preferred embodiment, the casing can use a waterproof design to meet the requirements of the field environment.

The power supply module 116 is an independent power supply module to meet the power supply requirements of the control machine 100 .

The following will further describe in detail the example of the application of the present invention in regional farmland and facility vegetable cultivation safety assurance environment monitoring system.

Please refer to FIG. 2 , the monitoring objects of the on-site monitoring system controller in one embodiment of the present invention are the regional farmland, the outdoor climate environment of facility vegetable cultivation and the internal environment of facility cultivation. In this environment, the monitoring system includes: one or more control machines 100, host computer 200, farmland, facility cultivation environment information collection series sensors 310, remote cultivation environment information collection series sensors 320, facility cultivation image field monitor 330, GSM , CDMA communication transceiver device 340 and GSM, CDMA data, image transmission device 350 .

The cultivation environment comprehensive information processing system established on the host computer 200 is an information management database for scientifically managing the whole process of crop growth. Functions such as centralized data processing, real-time parameter decision-making of system operation, and working status display of simulation diagrams.

Based on the RS485 serial interface communication technology, the host computer 200 completes the two-way communication between the field bus and one or more controllers 100 of the distributed field monitoring system.

The control machine 100 is connected to the host computer 200 through a bus. Generally, the control machine 100 can establish two-way interconnection and telecontrol with the host computer through RS485 serial port transmission communication with the multi-channel data collected. Under the cultivation technology decision-making support platform of the upper host of the system, the control machine 100 completes the whole process of controlling the cultivation environment process of the facility.

Farmland and facility vegetable cultivation environment information acquisition series sensors 310, remote cultivation environment series sensors 320, outdoor weather station (not shown), facility cultivation image site monitor 330, under the control of the host computer 200 and the control machine 100, realize the vegetable cultivation Cultivation facility environment multi-channel data two-way telecontrol communication monitoring and peripheral drive.

In the system, the GSM, CDMA wireless communication means and the Internet composed of the GSM, CDMA communication transceiver device 340 and the GSM, CDMA data and image transmission device 350 can also transmit farmland and facility site remote cultivation environment information, monitoring data and images through The wireless transmission transceiver device transmits to the upper host computer 200 of the system. The upper host computer 200 realizes remote control of the outdoor climate environment of regional farmland and facility vegetable cultivation and the internal environment of facility cultivation through serial communication according to the collected information parameters.

Thus, with the field bus, GSM, CDMA wireless communication and Internet as the carrier, complete the collection and monitoring of dynamic parameters of the facility cultivation environment and outdoor climate environment parameters, control facilities and devices, improve the crop growth environment, and provide the normal growth and suitable planting mode for crops. Provide scientific basis and decision-making. At the same time, it also provides real-time monitoring and limit warning protection for the safety of facility hardware systems and crop cultivation safety. When the system fails, the automatic monitoring system can realize remote and on-site online and offline work, ensure the normal operation of the facility cultivation environment monitoring and normal communication of basic parameters, and control the facilities and devices so that the crop cultivation environment will not be affected.

Specifically, the control process of the controller 100 is as follows: according to the facility vegetable cultivation environment, comparing the changes of outdoor meteorological elements, the controller 100 regulates the roof window, side windows, circulation exhaust fan and strong circulation exhaust device of the greenhouse. At the same time, under the premise of ensuring the light intensity of the crops, the internal sunshade net is adjusted, combined with the top window, side window, and circulation exhaust fan device to adjust the temperature and ventilation of the cultivation environment, effectively reducing the effect of indoor cultivation temperature in high temperature and high humidity environments. In addition, the control machine 100 completes the adjustment and control of parameters such as indoor temperature, humidity, ventilation, supplementary light intensity, irrigation water demand and fertilizer consumption through the growth and development of different crops in the facility.

The framework structure of the facility and the early warning protection and treatment system for abnormal climate and environmental emergencies are important links to ensure the safe operation of large-scale vegetable cultivation facilities and the normal growth of vegetables. In the event of abnormal climate and mechanical and electrical equipment failure, the control machine 100 collects climate parameters such as outdoor temperature, wind speed, wind direction, and rain intensity in real time, and sets the limit values of the inner roof window and side window positions according to the facilities and the safety parameters of different vegetable cultivation environments. Limit value, the system can timely start the over-limit early warning protection to keep the overall hardware structure of the facility in a relatively safe state, and activate the strong circulation exhaust device to effectively ensure the safety of planted crops in the facility.

Due to the independent control function, the control machine 100 can still complete all control functions independently when the upper host 200 stops working and the communication is completely cut off, thereby ensuring the continuity and reliability of the control. In addition, all levels of on-site monitoring system controllers in the system can form different levels of distributed control systems or different structural organization forms at the same time through the system network communication bus, thus maximizing the reliability and flexibility of the system.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection should be defined by the claims.

Claims (9)

1. A control machine of a cultivation environment on-site monitoring system, characterized in that it includes a microprocessor, one or more input modules, one or more output modules, and a system bus, the one or more input modules, the one or more output modules and the microprocessor are connected to the system bus; wherein, The one or more input modules are connected to information acquisition sensors on the cultivation environment site, and are used to collect environmental parameters and climate parameters on the cultivation environment site; The processor generates a control signal according to the environmental parameter and the climate parameter; The one or more output modules are connected to actuators on the cultivation environment site, and are used to drive the actuators according to the control signals of the processor. 2. The control machine of the cultivation environment on-site monitoring system according to claim 1, wherein the one or more input modules include an analog input module and a switch input module. 3. The control machine of the cultivation environment on-site monitoring system according to claim 1, wherein the one or more output modules include an analog output module and a switch output module. 4. The control machine of the cultivation environment on-site monitoring system according to claim 1, wherein the microprocessor is connected with a programmer. 5. The control machine of the cultivation environment on-site monitoring system according to claim 1, further comprising a user program memory storing user programs for the microprocessor to read. 6. The control machine of the cultivation environment on-site monitoring system according to claim 1, further comprising an independent power supply module for supplying power to the control machine. 7. The control machine of the cultivation environment on-site monitoring system according to claim 1, further comprising a lightning protection component. 8. the control machine of cultivation environment on-site monitoring system as claimed in claim 1, is characterized in that, described environmental parameter comprises following any combination: temperature, humidity, _CO Concentration, light intensity, wind speed, soil water content, soil Salt and nutrient solution PH/EC. 9. The controller of the cultivation environment on-site monitoring system according to claim 1, wherein the climate parameters include any combination of the following: outdoor temperature, humidity, wind speed, wind direction, and rain intensity.

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