CN110286621B - Ventilation control device based on hierarchical algorithm - Google Patents
Ventilation control device based on hierarchical algorithm Download PDFInfo
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- CN110286621B CN110286621B CN201910554216.5A CN201910554216A CN110286621B CN 110286621 B CN110286621 B CN 110286621B CN 201910554216 A CN201910554216 A CN 201910554216A CN 110286621 B CN110286621 B CN 110286621B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/246—Air-conditioning systems
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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
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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Abstract
The invention discloses a ventilation control device based on a grading algorithm, which comprises a shell, wherein the bottom of the shell is provided with a plurality of input and output ports; a control panel is arranged on the front side surface of the shell; a circuit board is arranged in the shell, and a microprocessor is arranged on the circuit board; the microprocessor is respectively connected with the storage circuit, the data acquisition circuit, the communication circuit, the control circuit, the key circuit, the alarm circuit, the watchdog circuit, the power management circuit and the display circuit; the data acquisition circuit is integrated with a plurality of analog input ends and a plurality of switch input ends; the data acquisition circuit is used for acquiring greenhouse temperature and humidity information; the communication circuit integration is provided with a plurality of paths of NB-IOT communication module interfaces; the control circuit is integrated with a plurality of control output interfaces. The intelligent greenhouse monitoring system is simple to operate and convenient to carry, provides a good scheme for remote workers to carry out fine management, data analysis and safety early warning on the greenhouse on site, and is widely applicable to various agricultural fields needing intelligent monitoring equipment.
Description
Technical Field
The invention relates to a ventilation control device, in particular to a ventilation control device based on a grading algorithm, and belongs to the technical field of agricultural information.
Background
At present, intelligent monitoring equipment in the agricultural field of China is developed rapidly, but compared with advanced countries in the world, China has a more obvious gap in the aspect of monitoring automation facilities. In the aspect of communication transmission, the remote monitoring equipment usually adopts a GPRS mode, the mode charges through flow, and particularly after a large amount of deployment, the cost is multiplied; furthermore, this approach is power consuming; in the aspect of field control, the field control means is single, only the traditional empirical switch control is adopted, fine control and management are difficult to achieve in a cutting mode, the high-precision requirement is difficult to meet, and a common monitoring device lacks a visual and convenient human-computer interface.
Disclosure of Invention
In order to solve the defects of the technology, the invention provides a ventilation control device based on a grading algorithm.
In order to solve the technical problems, the invention adopts the technical scheme that: a ventilation control device based on a grading algorithm comprises a shell, wherein the bottom of the shell is provided with a plurality of input and output ports; a control panel is arranged on the front side surface of the shell; a circuit board is arranged in the shell, and a microprocessor is arranged on the circuit board;
the microprocessor is respectively connected with the storage circuit, the data acquisition circuit, the communication circuit, the control circuit, the key circuit, the alarm circuit, the watchdog circuit, the power management circuit and the display circuit; the microprocessor is used for calculating the acquired data, processing the control command and performing hierarchical control according to the calculation result; temperature and humidity sensor groups are distributed at multiple points in the greenhouse, a microprocessor collects the temperature and humidity of the greenhouse through the temperature and humidity sensor groups and calculates the reasonable ventilation level of the greenhouse, and then a control circuit controls the running number of corresponding fans according to the level; the data acquisition circuit is integrated with a plurality of analog input ends and a plurality of switch input ends; the data acquisition circuit is used for acquiring greenhouse temperature and humidity information; the communication circuit integration is provided with a plurality of paths of NB-IOT communication module interfaces; the control circuit is integrated with a plurality of paths of control output interfaces;
the storage circuit is connected with the server through an IO interface; the data acquisition circuit adopts an on-chip 12-bit A/D converter provided with a chip to provide an analog input end; the communication circuit is connected with the microprocessor through a serial port; the microprocessor is connected with the control circuit through a serial port to realize the expansion of the control circuit; the key circuit is connected with the microprocessor through an IO interface; the alarm circuit is connected with the microprocessor through an IO interface; the watchdog circuit is connected with the microprocessor through an IO interface; the display circuit is connected with the microprocessor through a serial port;
the microprocessor determines whether to start the fan according to the ventilation level, and the specific control process is as follows:
when the fan needs to be started, the microprocessor acquires parameters through the temperature and humidity sensor group and calculates the reasonable ventilation level of the greenhouse:
I. if the actual temperature is higher than the set temperature, starting a cooling mode, judging whether the temperature difference grade changes by the microprocessor, if the temperature difference grade changes, delaying grade switching, calculating and obtaining the highest grade limit by the microprocessor, and starting the fan after obtaining the corresponding grade and the operation parameters; if the temperature difference grade is not changed, directly obtaining the corresponding grade and the operation parameters, and then starting the fan;
II. If the actual temperature is lower than the set temperature, starting a lowest ventilation volume mode, calculating and acquiring a lowest level limit through a microprocessor, and starting the fan after acquiring a polling fan and circulation and frequency conversion parameters;
after the fan is started in step I, II, delaying the greenhouse temperature and humidity parameters collected by the temperature and humidity sensor group to return to the microprocessor;
the fans in the ventilation level group can be set to three different modes respectively: and (3) continuously running: in the mode, the fan equipment continuously operates; and (3) circulating operation: in the mode, the fan equipment is circularly operated in a mode of turning on for X minutes and turning off for Y minutes; and (3) alternately operating: in the mode, the fans are sequentially started in turn at set intervals;
wherein, the ventilation level can expand 15 way fans, and the ventilation level can set up to 10 grades.
Furthermore, the input and output ports are respectively provided with a power line, a switch signal line, an analog signal line, a control line and a communication line.
Further, an LCD display is arranged on the control panel; an alarm display lamp is arranged below the LCD display; the lower part of the alarm display lamp is provided with a key.
Furthermore, the display circuit is respectively connected with the alarm display lamp and the LCD.
Further, the power management circuit is connected with the microprocessor through a power line; the power management circuit provides electric energy for the microprocessor and provides a stable power supply for each circuit module of the device.
The invention provides a device capable of adjusting the air volume according to the temperature and humidity of a greenhouse in a grading way, which saves communication cost and reduces operation cost by adopting an NB-IOT wireless transmission mode in the aspect of communication; in the aspect of control, the control precision is improved and the power consumption is reduced by adopting a mode of controlling in stages according to the temperature and the humidity; the modularized configuration and the good man-machine interaction interface are adopted, so that the convenience of equipment operation, the rapidness of maintenance and the use flexibility are improved, and the equipment has the characteristics of low cost, high precision, high performance and the like. In addition, the intelligent greenhouse ventilation control device is simple to operate, convenient to carry, more energy-saving and accurate, provides a good scheme for remote workers to carry out fine management, data analysis and safety early warning on the greenhouse on site, can be used as a universal ventilation control device, and is widely applied to the agricultural field needing intelligent monitoring equipment.
Drawings
Fig. 1 is a block diagram of the connection relationship between modules of the present invention.
Fig. 2 is an external structural view of the present invention.
Fig. 3 is a circuit schematic of a memory circuit.
Fig. 4 is a circuit schematic of a communication circuit.
Fig. 5 is a circuit schematic of the control circuit.
Fig. 6 is a schematic circuit diagram of a buzzer in the alarm circuit.
Fig. 7 is a circuit schematic of an indicator light in an alarm circuit.
Fig. 8 is a farad capacitor voltage-sharing charging and discharging circuit diagram in the power management circuit.
FIG. 9 is a schematic circuit diagram of the DC5V to DC3.3V in the power management circuit.
FIG. 10 is a schematic circuit diagram of DC5V to DC4V in a power management circuit.
Fig. 11 is a circuit schematic diagram of the display circuit.
FIG. 12 is a flow chart of fan operation.
Fig. 13 is a schematic diagram of the circuit of fig. 1.
In the figure: 1. a microprocessor; 2. a storage circuit; 3. a data acquisition circuit; 4. an analog input; 5. a switch input; 6. a communication circuit; 7. a control circuit; 8. a key circuit 9 and an alarm circuit; 10. a watchdog circuit; 11. a power management circuit; 12. a display circuit; 13. a housing; 14. an input-output port; 15. an LCD display; 16. an alarm display lamp; 17. and (6) pressing a key.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The ventilation control device based on the grading algorithm as shown in fig. 1 and fig. 2 comprises a shell 13, wherein a plurality of input and output ports 14 are arranged at the bottom of the shell 13; the housing 13 provides various input and output and external power supply interfaces on the backplane, and selected plugs all meet IP67 waterproof requirements. The input/output port 14 is provided therein with a power line, a switching signal line, an analog signal line, a control line, and a communication line, respectively. The input/output port 14 is an outlet port from which various connections can be drawn. A control panel is arranged on the front side surface of the shell 13; a circuit board is arranged in the shell 13, and a microprocessor 1 is arranged on the circuit board;
as shown in fig. 1 and fig. 13, the microprocessor 1 is respectively connected with the storage circuit 2, the data acquisition circuit 3, the communication circuit 6, the control circuit 7, the key circuit 8, the alarm circuit 9, the watchdog circuit 10, the power management circuit 11 and the display circuit 12; the microprocessor 1 is used for calculating the collected data, processing the control command and performing hierarchical control according to the calculation result; temperature and humidity sensor groups are distributed at multiple points in the greenhouse, the microprocessor 1 collects the temperature and humidity of the greenhouse through the temperature and humidity sensor groups and calculates the reasonable ventilation level of the greenhouse, and then the control circuit 7 controls the running number of corresponding fans according to the level; the data acquisition circuit 3 is integrally provided with a plurality of analog input ends 4 and a plurality of switch input ends 5; the data acquisition circuit 3 is used for acquiring greenhouse temperature and humidity information; the communication circuit 6 is integrated with a plurality of NB-IOT communication module interfaces; the control circuit 7 is integrated with a plurality of control output interfaces; the control circuit 7 realizes the grading operation by controlling the opening of the fan, so that the energy is saved more and the control is more accurate.
Narrow-Band Internet of Things (NB-IOT) becomes an important branch of the world wide Internet. The NB-IOT is constructed in a cellular network, only consumes about 180KHz of bandwidth, and can be directly deployed in a GSM network, a UMTS network or an LTE network so as to reduce the deployment cost and realize smooth upgrading. NB-IOT is an emerging technology in the IOT field that supports cellular data connectivity for low power devices over a wide area network, also known as a Low Power Wide Area Network (LPWAN). The NB-IOT supports efficient connection of devices with long standby time and high requirements for network connection. NB-IOT device battery life is said to be improved by at least 10 years while still providing very comprehensive indoor cellular data connection coverage.
The advantage of narrowband thing networking: the coverage is wide, and compared with the traditional GSM, one base station can provide 10 times of area coverage. One NB-IOT base station can cover a range of 10km, and one base station in a small county can cover the range. Meanwhile, compared with LTE and GPRS base stations, the NB-IOT base station improves the gain by 20dB, can cover places where signals are difficult to reach, such as underground garages, basements, underground pipelines and the like, and can not make a call when the signals are underground, but the NB-IOT base station can still communicate; 2) the mass connection is realized, and the frequency of 200KHz can provide 10 ten thousand connections; 3) the power consumption is low, and the battery can work for ten years by using an AA battery (No. 5 battery) without charging. The NB-IOT introduces an eDRX power saving technology and a PSM power saving mode, so that the power consumption is further reduced, and the battery service time is prolonged. In the PSM mode, the terminal is still registered in the network, but the signaling is not reachable, so that the terminal stays in deep sleep for a longer time to achieve the purpose of saving power. The eDRX power saving technology further prolongs the sleep cycle of the terminal in the idle mode, reduces unnecessary starting of a receiving unit, and greatly improves downlink accessibility compared with a PSM.
The microprocessor 1 determines whether to start the fan according to the ventilation level, and the specific control process is as follows:
when the fan needs to be started, the microprocessor 1 acquires parameters through the temperature and humidity sensor group and calculates the reasonable ventilation level of the greenhouse:
I. if the actual temperature is higher than the set temperature, starting a cooling mode, judging whether the temperature difference grade changes by the microprocessor 1, if the temperature difference grade changes, delaying grade switching, calculating and acquiring the highest grade limit by the microprocessor 1, and starting the fan after acquiring the corresponding grade and the operation parameters; if the temperature difference grade is not changed, directly obtaining the corresponding grade and the operation parameters, and then starting the fan;
II. If the actual temperature is lower than the set temperature, starting a lowest ventilation volume mode, calculating and acquiring a lowest level limit through the microprocessor 1, and starting the fan after acquiring a polling fan and circulation and frequency conversion parameters;
after the fan is started in step I, II, delaying the greenhouse temperature and humidity parameters collected by the temperature and humidity sensor group to return to the microprocessor 1;
under the high-temperature environment, the fan unit is regulated and controlled step by step according to the temperature difference grade, so that the cooling operation under the high-temperature environment is met; and under the low-temperature environment, the minimum ventilation level fan unit is operated, and the circulating fan and the alternative fan can be regulated and controlled intermittently according to the time, so that the ventilation operation under the low-temperature environment is met.
In order to meet various requirements of greenhouses with different structures in different regions, three operation modes are provided, and fans in the grade groups can be respectively set to be in different modes. 1) And (3) continuously running: in the mode, the fan equipment continuously operates; 2) and (3) circulating operation: in the mode, the fan equipment is circularly operated in a mode of turning on for X minutes and turning off for Y minutes; 3) and (3) alternately operating: in the mode, the fans are sequentially started in turn at set intervals.
The ventilation level can be expanded by 15 fans at most, the ventilation level can be set to 10 levels, and parameters such as target temperature, level delay time increase/decrease, maximum/minimum level limitation, alternate operation period and the like can be set according to different regions and seasons. A specific fan draft control process is shown in fig. 12.
For example, a fan group with a temperature of 23 degrees and a temperature difference of 0 is set as a minimum ventilation level, the lowest level is set as 2, the 2 nd level is set as the minimum ventilation level, and when the measured room temperature is less than 23 degrees, the fan operates according to the level 2 set content, namely, the fans 2 and 4 continuously operate at a speed of 10%; when the temperature rises to 26 ° and the hold time reaches "ramp up delay time" then ramp up the ventilation level, in this case the ventilation level will reach level 7 and the fans 1-12 will continue to run at 50% speed.
As shown in fig. 3, the storage circuit 2 is connected to the server through an IO interface; the data acquisition circuit 3 adopts an on-chip 12-bit A/D converter provided by a chip to provide an analog input end 4; as shown in fig. 4, the communication circuit 6 is connected to the microprocessor 1 via a serial port; as shown in fig. 5, the microprocessor 1 is connected with the control circuit 7 through a serial port to realize the expansion of the control circuit 7; the key circuit 8 is connected with the microprocessor 1 through an IO interface; as shown in fig. 6 and 7, the alarm circuit 9 is connected to the microprocessor 1 through an IO interface; the watchdog circuit 10 is connected with the microprocessor 1 through an IO interface; as shown in fig. 11, the display circuit 12 is connected to the microprocessor 1 via a serial port. The communication circuit 6 is connected with a remote control data center, and can realize remote control, real-time setting and other operations.
An LCD display 15 is arranged on the control panel; an alarm display lamp 16 is arranged below the LCD display 15; a key 17 is arranged below the alarm display lamp 16. The display circuit 12 is respectively connected with an alarm display lamp 16 and an LCD display 15. When the temperature and humidity exceed the set value, the alarm display lamp 16 of the alarm circuit is lighted, and an alarm is given out through the buzzer. At this time, the worker can perform remote control to eliminate the alarm, or the microprocessor 1 and the control circuit 7 realize automatic regulation control to eliminate the alarm.
As shown in fig. 8 to 10, the power management circuit 11 is connected to the microprocessor 1 through a power line; the power management circuit 11 provides power to the microprocessor 1 and provides a stable power supply to the circuit modules of the device.
The basic function of the watchdog circuit 10 is to restart the system after a software problem or program run-off occurs. The watchdog counter automatically counts when working normally, the program flow periodically resets and clears, if the system is stuck or running away at a certain position, the timer will overflow and will enter into interruption. Some reset operations are performed in timer interrupts. And (4) enabling the system to recover a normal working state, namely resetting the watchdog to ensure that the selected timing overflow is reset to zero and restarting the processor during the period that the program is not normally operated. The timing duration of the watchdog circuit 10 may be determined by the cycle period of the specific application, and is usually slightly longer than the maximum cycle period of the system in normal operation.
When the invention is used for data acquisition, local operation and stable signal transmission, the modules are specifically selected as follows:
the microprocessor 1 adopts an ideological semiconductor STM32F407ZGT6, comprises 144 pins and can provide enough I/0 resources for the storage circuit 2, the control circuit 7, the indicator light circuit and the data acquisition circuit 3; 1M of internal Flash and 192K of internal memory; the chip is provided with a 12-bit A/D converter and provides an on-chip reference voltage, so that the requirement of information acquisition in the technical scheme can be met; USART ports 6, I2C ports 3, provide an interface for the communication circuit 6.
The storage circuit 2, the sensor configuration file and the system upgrading file adopt an external SD card with 4 gigabytes of space.
The data acquisition circuit 3 adopts an STM32F407ZGT6 self-contained 12-bit A/D converter to provide an analog input end, can independently complete an A/D conversion function without external components, realizes the conversion from an analog signal to a digital signal, and adopts the REF3330 of TI as a reference power supply chip during A/D acquisition so as to improve the A/D measurement accuracy. The sensor connected with the data acquisition circuit 3 comprises a plurality of paths of temperature and humidity sensors.
The communication circuit 6 is connected with a four-credit company NB-IOT module F2910 by an RS232 interface which is subjected to level conversion by an STM32F407ZGT6 own TTL interface.
The power management circuit 11 adopts a storage battery pack and provides 12V, 5V and 3.3V power interfaces for external equipment.
The working principle of the invention is as follows: the greenhouse ventilation control system is placed on a greenhouse site, the microprocessor 1 collects multiple groups of temperature and humidity data in the greenhouse through the temperature and humidity sensor group, the collected data and the control model data are calculated and compared to obtain the ventilation grade, and after the reasonable ventilation grade of the greenhouse is calculated, the control circuit 7 controls the corresponding running number of fans according to the ventilation grade. The control model in the device can be input locally and remotely by workers and is continuously optimized in practical application. In addition, the device carries out local storage and display on the temperature and humidity and control data, and carries out remote alarm on the out-of-range condition of the temperature and humidity.
Compared with the prior art, the invention has the following advantages:
(1) the control model of the grading algorithm is adopted, so that the fine management of the greenhouse is realized, and the control precision is improved;
(2) due to the adoption of the NB-IOT transmission mode, the system power consumption and the operation cost are reduced to a certain extent;
(3) as the man-machine interaction functions such as liquid crystal display, key pressing and the like are provided, the system can be set and data can be obtained locally by field personnel conveniently;
(4) the control logic of the ventilation level is optimized, the frequency conversion control and the individual alternate operation function in the fan unit are added, the level switching logic is adjusted, and the jitter existing in the level switching period is effectively avoided.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (5)
1. A ventilation control device based on a hierarchical algorithm, comprising an outer casing (13), characterized in that: the bottom of the shell (13) is provided with a plurality of input and output ports (14); a control panel is arranged on the front side surface of the shell (13); a circuit board is arranged in the shell (13), and a microprocessor (1) is arranged on the circuit board;
the microprocessor (1) is respectively connected with the storage circuit (2), the data acquisition circuit (3), the communication circuit (6), the control circuit (7), the key circuit (8), the alarm circuit (9), the watchdog circuit (10), the power management circuit (11) and the display circuit (12); the microprocessor (1) is used for calculating the collected data, processing the control command and performing hierarchical control according to the calculation result; temperature and humidity sensor groups are distributed at multiple points in the greenhouse, a microprocessor (1) collects the temperature and humidity of the greenhouse through the temperature and humidity sensor groups and calculates the reasonable ventilation level of the greenhouse, and then a control circuit (7) controls the running number of corresponding fans according to the level; the data acquisition circuit (3) is integrally provided with a plurality of analog input ends (4) and a plurality of switch input ends (5); the data acquisition circuit (3) is used for acquiring greenhouse temperature and humidity information; the communication circuit (6) is integrated with a plurality of paths of NB-IOT communication module interfaces; the control circuit (7) is integrally provided with a plurality of paths of control output interfaces;
the storage circuit (2) is connected with the server through an IO interface; the data acquisition circuit (3) adopts an on-chip 12-bit A/D converter provided with a chip to provide an analog input end (4); the communication circuit (6) is connected with the microprocessor (1) through a serial port; the microprocessor (1) is connected with the control circuit (7) through a serial port to realize the expansion of the control circuit (7); the key circuit (8) is connected with the microprocessor (1) through an IO interface; the alarm circuit (9) is connected with the microprocessor (1) through an IO interface; the watchdog circuit (10) is connected with the microprocessor (1) through an IO interface; the display circuit (12) is connected with the microprocessor (1) through a serial port;
the microprocessor (1) determines whether to start the fan according to the ventilation level, and the specific control process is as follows:
when the fan needs to be started, the microprocessor (1) acquires parameters through the temperature and humidity sensor group and calculates the reasonable ventilation level of the greenhouse:
I. if the actual temperature is higher than the set temperature, starting a cooling mode, judging whether the temperature difference grade changes by the microprocessor (1), if the temperature difference grade changes, delaying grade switching, calculating and obtaining the highest grade limit through the microprocessor (1), and starting the fan after obtaining the corresponding grade and the operation parameters; if the temperature difference grade is not changed, directly obtaining the corresponding grade and the operation parameters, and then starting the fan;
II. If the actual temperature is lower than the set temperature, starting a lowest ventilation volume mode, calculating and acquiring a lowest level limit through a microprocessor (1), and starting the fan after acquiring a polling fan and circulation and frequency conversion parameters;
after the fan is started in the step I, II, the greenhouse temperature and humidity parameters collected by the temperature and humidity sensor group are delayed to return to the microprocessor (1);
the fans in the ventilation level group can be set to three different modes respectively: and (3) continuously running: in the mode, the fan equipment continuously operates; and (3) circulating operation: in the mode, the fan equipment is circularly operated in a mode of turning on for X minutes and turning off for Y minutes; and (3) alternately operating: in the mode, the fans are sequentially started in turn at set intervals;
wherein, the ventilation level can expand 15 way fans, and the ventilation level can set up to 10 grades.
2. The hierarchical algorithm-based ventilation control device according to claim 1, wherein: the signal input/output port (14) is internally provided with a power line, a switch signal line, an analog signal line, a control line and a communication line.
3. The hierarchical algorithm-based ventilation control device according to claim 2, characterized in that: an LCD display (15) is arranged on the control panel; an alarm display lamp (16) is arranged below the LCD display (15); a key (17) is arranged below the alarm display lamp (16).
4. The hierarchical algorithm-based ventilation control device according to claim 3, wherein: the display circuit (12) is respectively connected with an alarm display lamp (16) and an LCD display (15).
5. The ventilation control device based on the classification algorithm according to any one of claims 1 to 4, wherein: the power management circuit (11) is connected with the microprocessor (1) through a power line; the power management circuit (11) provides electric energy for the microprocessor (1) and provides a stable power supply for each circuit module of the device.
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| CN101440990A (en) * | 2008-12-26 | 2009-05-27 | 四川麦克威科技有限公司 | Novel ventilated control system and method |
| CN101482759A (en) * | 2009-02-17 | 2009-07-15 | 北京市农林科学院 | Greenhouse environment control apparatus and method |
| CN201837014U (en) * | 2010-10-27 | 2011-05-18 | 山东瑞科通信科技发展有限公司 | Base station intelligent ventilating system |
| CN201935904U (en) * | 2010-12-18 | 2011-08-17 | 西安联友电子科技有限公司 | Device for greenhouse environment real-time monitoring and analysis as well as simultaneous display |
| KR101568853B1 (en) * | 2015-01-12 | 2015-11-13 | 충남대학교산학협력단 | Greenhouse environment measurement device of Self-moving type having an ultrasonic sensor on the side |
| CN105509265A (en) * | 2016-01-25 | 2016-04-20 | 福建海晟环境科技有限公司 | Intelligent ventilation, dust removal and purification system |
| WO2018232727A1 (en) * | 2017-06-23 | 2018-12-27 | 顾裕忠 | Greenhouse temperature and humidity monitoring system |
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