CN206470629U - Warmhouse booth temperature curve control system - Google Patents

Abstract

The utility model discloses a greenhouse temperature curve control system, which comprises a host computer, a temperature sensor, a control system, a humidifier, a humidity sensor, a blower, a heater and an alarm; both the temperature sensor and the humidity sensor are connected to the input end of the control system Connection, the control system and the upper computer are connected wirelessly; heaters, humidifiers, alarms and blowers are all connected to the output terminals of the control system. The utility model has a simple structure, can realize the purpose of controlling the temperature by a curve, improves the accuracy of the temperature control of the device, and can realize the adjustment of the optimal temperature required by the plants at different times and in different growth stages.

Description

Greenhouse temperature curve control system

technical field

The utility model relates to the field of agricultural greenhouses, in particular to a greenhouse temperature curve control system.

Background technique

The temperature control in the greenhouse generally adopts the traditional linear control method. The maximum temperature and the minimum temperature in the greenhouse are set on the control system, and the temperature is collected by the sensor and transmitted to the host computer for comparison. If it is higher than the maximum value, it returns to the control system. Take cooling measures, if it is lower than the minimum value, take warming measures. This control method is simple and easy to operate, but the accuracy is not high, and only approximate ranges can be input for control, and crops have different temperature requirements at different times and different growth stages, and cannot reach the optimal temperature required for controlling crop growth. Therefore, it is necessary to design a temperature curve control method.

Utility model content

Aiming at the above-mentioned shortcomings in the prior art, the utility model provides a greenhouse temperature curve control system, which can effectively solve the problem of insufficient temperature control accuracy through a linear method.

For solving above-mentioned technical problem, the technical scheme that the utility model adopts is:

A greenhouse temperature curve control system is provided, including a host computer, a temperature sensor, a control system, a humidifier, a humidity sensor, a blower, a heater, and an alarm; both the temperature sensor and the humidity sensor are connected to the input end of the control system, and the control system It is wirelessly connected with the upper computer; the heater, humidifier, alarm and blower are all connected to the output end of the control system.

The beneficial effects of the utility model are as follows: different stages of plant growth and optimal temperatures in different periods are set on the control system, the temperature sensor detects temperature signals in different time periods, and the detected temperature signals are transmitted to the control system, and then It is transmitted from the control system to the upper computer, and the upper computer compares the collected temperature value with the expected value through the temperature control algorithm, and the expected value changes at any time during the day, through the control of the best value in different time periods, throughout the day To achieve the purpose of curve control.

Using this method can improve the temperature control accuracy, better adjust the temperature of the greenhouse, so that the crops can be completely produced in an environment suitable for their own growth and development; and the number of startups and working hours of the control system are optimized compared to before , fewer starts and shorter working hours.

Preferably, the control system includes a central processing unit, a photoelectric isolator and a touch screen, and both the photoelectric isolator and the touch screen are connected to the central processing unit.

The beneficial effect of adopting the above-mentioned preferred scheme is: a touch screen is set on the control system, which facilitates the adjustment and optimization of the control system in the greenhouse, and the photoelectric isolator isolates the central processing unit from the strong circuit to prevent electromagnetic interference and ensure the safety and reliability of the central processing unit run.

Preferably, the central processing unit is a PLC controller or a single-chip microcomputer controller.

Preferably, the blower is installed above the channels on both sides of the greenhouse, and the heater is installed on the inner wall of the greenhouse.

The beneficial effect of adopting the above preferred solution is: the blower is installed above the channels on both sides of the greenhouse to form air convection, which can effectively reduce the air humidity and temperature in the greenhouse.

Preferably, the alarm is a light alarm or a voice alarm.

Preferably, the temperature sensor, humidifier, humidity sensor and alarm are all installed on the inner wall of the greenhouse.

The beneficial effect of adopting the above preferred solution is: after the adjustment of the control system, when the temperature in the greenhouse is still lower than the set minimum value or higher than the set maximum value, the alarm will send out an alarm.

Description of drawings

Fig. 1 is a block diagram of the utility model;

Figure 2 is a schematic diagram of the structure of the greenhouse.

Among them, 1. The main body of the greenhouse; 2. Shade net; 3. Temperature sensor; 4. Control system; 5. Humidifier; 6. Humidity sensor; 7. Blower; 8. Heater; 9. Ceiling; 10. Alarm.

detailed description

The specific embodiment of the present utility model is described below, so that those skilled in the art understand the utility model, but should be clear, the utility model is not limited to the scope of specific embodiment, for those of ordinary skill in the art, as long as Various changes are within the spirit and scope of the utility model defined and determined by the appended claims, and these changes are obvious, and all utility model creations utilizing the concept of the utility model are all included in the protection list.

As shown in Figures 1 and 2, the greenhouse temperature curve control system includes a host computer, a temperature sensor 3, a control system 4, a humidifier 5, a humidity sensor 6, a blower 7, a heater 8 and an alarm 10, and the temperature sensor 3 , control system 4, humidifier 5, humidity sensor 6, heater 8 and alarm 10 are all installed on the inner wall of the greenhouse main body 1, and the blower 7 is installed above the passages on both sides of the greenhouse, and the preferred alarm 10 is a light alarm.

As shown in FIG. 2 , a ceiling 9 is arranged on the upper end of the greenhouse main body 1 , and the ceiling 9 and the greenhouse main body 1 form a closed cavity, and a sunshade net 2 is arranged on the inner surface of the ceiling 9 .

As shown in FIG. 1 , the temperature sensor 3 and the humidity sensor 6 respectively used to detect air temperature and humidity are connected to the input end of the control system 4 , and transmit the detected humidity signal and temperature signal to the control system 4 .

A wireless connection is adopted between the control system 4 and the upper computer, the control system 4 analyzes the signals detected by the temperature sensor 3 and the humidity sensor 6, and transmits the analysis results to the upper computer, and the upper computer then analyzes the signals of the control system 4 according to the analysis results. give command.

The output end of the control system 4 is also respectively connected with a heater 8 , a humidifier 5 , a blower 7 and an alarm 10 .

When the air humidity detected by the humidity sensor 6 was lower than the optimal value set in the control system 4, the control system 4 controlled the humidifier 5 to work to increase the air humidity; when the air humidity detected by the humidity sensor 6 was higher than the control system 4 When the optimal value is set within, the control system 4 controls the blower 7 to work to reduce the air humidity.

After being regulated by the control system, when the temperature in the greenhouse is lower than the set minimum value or higher than the set maximum value, the alarm will send out sound alarm and light alarm under the control of the control system.

The control system 4 includes a central processing unit, a photoelectric isolator and a touch screen, both the photoelectric isolator and the touch screen are connected to the central processing unit, preferably the central processing unit is a PLC controller.

The photoelectric isolator isolates the central processing unit from strong circuits, prevents electromagnetic interference, and ensures the safe and reliable operation of the central processing unit.

The touch screen is connected to the central processing unit, and the staff can adjust various parameters of the greenhouse through the touch screen, and at the same time view the alarm records through the touch screen.

The working principle of the utility model is described in conjunction with accompanying drawing 1 and accompanying drawing 2:

The temperature sensor collects the temperature in the greenhouse every 30 minutes, and every 2 hours is a period of time. The optimal temperature range of the plants in different time periods is set on the control system 4, and the collected temperature signal is transmitted to the host computer. The host computer passes the temperature The control algorithm compares the collected temperature value with the expected value, and the expected value changes at any time during the day. Through the control of the best value in different time periods, the purpose of curve control is achieved throughout the day, effectively improving the temperature. Accuracy of temperature control.

When the detected value of the temperature is lower than the expected value, the upper computer sends an instruction, and the control system 4 controls the heater 8 to work to increase the temperature in the greenhouse; when the detected value of the temperature is higher than the expected value, the upper computer sends an instruction, and the control system 4 controls the blower 7 work to reduce the temperature in the greenhouse.

Although the specific implementation of the utility model has been described in detail in conjunction with the accompanying drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and deformations that can be made by those skilled in the art without creative efforts still belong to the protection scope of this patent.

Claims (6)

1. A greenhouse temperature curve control system, characterized in that it includes a host computer, a temperature sensor (3), a control system (4), a humidifier (5), a humidity sensor (6), a blower (7), and a heater (8) and an alarm (9); the temperature sensor (3) and the humidity sensor (6) are both connected to the input end of the control system (4), and the control system (4) is wirelessly connected to the upper computer; the The heater (8), humidifier (5), alarm (10) and blower (7) are all connected to the output end of the control system (4). 2. The greenhouse temperature curve control system according to claim 1, characterized in that: the control system (4) includes a central processing unit, a photoelectric isolator and a touch screen, and the photoelectric isolator and the touch screen are connected to the central processing unit connect. 3. The greenhouse temperature curve control system according to claim 2, characterized in that: the central processing unit is a PLC controller or a single-chip microcomputer controller. 4. The greenhouse temperature curve control system according to claim 1, characterized in that: the blower (7) is installed above the channels on both sides of the greenhouse, and the heater (8) is installed on the inner wall of the greenhouse. 5. The greenhouse temperature curve control system according to claim 1, characterized in that: the alarm (10) is a light alarm or a voice alarm. 6. The greenhouse temperature curve control system according to claim 1 or 5, characterized in that: the temperature sensor (3), humidifier (5), humidity sensor (6) and alarm (10) are all installed in On the inner wall of the greenhouse.