Ventilation control system and farm ventilation control method

Abstract

The invention discloses a ventilation control system and a farm ventilation control method. The system comprises a fan, an environment controller and a potentiometer, the environment controller comprises an input unit and a control unit and is communicated with the fan; the control unit is used for switching the control mode of the fan into manual control or automatic control; the input unit is used for inputting control parameters required for automatically controlling the fan; and the potentiometer is used for inputting a voltage signal to the fan when the fan is manually controlled. The method comprises the steps that S1a, the control mode of the fan is switched from manual control to automatic control in the control unit; s2a, control parameters needed for automatically controlling the fan are input from the input unit; s3a, the environment controller analyzes the control parameters input by the input unit and generates corresponding speed regulation values; s4a, the environment controller controls the fan to work according to the generated speed regulation value; s5a, the environment controller obtains the working parameters of the fan in real time during working and converts the working parameters into corresponding visual data; and S6a, the display unit displays the visual data. According to the invention, the use of signal lines is effectively saved, so that the cost of the whole system is reduced.

Description

Technical Field

[0001] The invention belongs to the field of agricultural ventilation control, and in particular relates to a ventilation control system and a farm ventilation control method. Background Art

[0002] At present, the design of traditional ventilation control systems is relatively complex, and multiple devices need to work closely together to make the system run well, resulting in a large demand for signal lines. Due to the layout requirements of EC fans and environmental controllers in the construction of agricultural farms, these signal lines often need to be led out for 50 meters or even longer, resulting in cumbersome and complicated wiring procedures and high costs.

[0003] In addition, the control mode switching of the traditional ventilation control system requires a steering switch, potentiometer, environmental controller, and EC fan to achieve, and the switching uses a mechanical switch, which is a mechanical operation, resulting in a limited service life of the switch; the traditional ventilation controller system also requires the participation of dedicated alarm equipment to enable the system to operate normally when encountering an environmental controller failure. Summary of the invention

[0004] The object of the present invention is to provide a ventilation control system and a farm ventilation control method, which can effectively save the use of signal lines and thus reduce the cost of the entire system.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is as follows:

[0006] A ventilation control system, comprising:

[0007] Fan;

[0008] An environmental controller communicating with the fan, comprising an input unit and a control unit;

[0009] The control unit is used to switch the control mode of the fan to manual control or automatic control;

[0010] The input unit is used to input control parameters required for automatic control of the fan;

[0011] A potentiometer, electrically connected to the first connection end of the fan, and used to input a voltage signal to the fan when the fan is manually controlled;

[0012] The environmental controller is used to control the fan according to the control parameters input by the input unit.

[0013] A ventilation control system of the present invention can complete the switching of the control mode of the fan through the input unit of the environmental controller. This electronically operated switching switch has the advantage of no loss, and the method of inputting the required control parameters through the input unit can facilitate the operation and use of the system; the environmental controller and the potentiometer can complete the control of the two operating modes of the fan, so that the fan does not need a separate lead wire to complete the switching of the control mode, which effectively saves the use of signal lines and thereby reduces the cost of the entire system.

[0014] Preferably, the environment controller further comprises a display unit;

[0015] The environmental controller is also used to obtain the working parameters of the fan in real time and convert them into corresponding visual data; the display unit is used to display the visual data.

[0016] A ventilation control system of the present invention can display the fan operating parameters acquired by the environmental controller in real time by providing a display unit, so that the fan operating data has visibility.

[0017] Preferably, the ventilation control system further comprises an alarm unit; the environmental controller is further used to monitor abnormal data of the fan and send a corresponding alarm signal to the alarm unit; the alarm unit is used to receive the alarm signal and issue an alarm.

[0018] A ventilation control system of the present invention is provided with an alarm unit, and when the environment controller monitors that the fan is working abnormally, an alarm can be issued to notify the user in time.

[0019] Preferably, the alarm unit includes an audible and visual alarm; a first connection end of the audible and visual alarm is electrically connected to a first connection end of the environmental controller.

[0020] A ventilation control system of the present invention can complete the alarm procedure only with the sound and light alarm by setting up a sound and light alarm and connecting with an environmental sensor, without using additional alarm equipment.

[0021] Preferably, the fan includes a relay; the relay includes a single-pole double-throw interface; the single-pole double-throw interface is electrically connected to the second connection end of the sound and light alarm.

[0022] A ventilation control system of the present invention can directly send a level signal to stop the fan from working by arranging a single-pole double-throw relay in the fan and connecting it with an audible and visual alarm when the audible and visual alarm sounds an alarm.

[0023] Preferably, the ventilation control system also includes a power supply; the first connection end of the power supply is electrically connected to the second connection end of the environmental controller; the second connection end of the power supply is electrically connected to the second connection end of the fan; and the third connection end of the power supply is electrically connected to the third connection end of the sound and light alarm.

[0024] A ventilation control system of the present invention is provided with a power supply, and the power supply can supply power to an environment controller, a fan and an audible and visual alarm.

[0025] Preferably, the ventilation control system also includes a temperature sensor; the temperature sensor is connected to the third connection end of the environmental controller; the temperature sensor is used to collect temperature data of the farm and send it to the environmental controller.

[0026] A ventilation control system of the present invention enables the environment controller to collect temperature data of the farm by arranging a temperature sensor and connecting the environment controller.

[0027] The present invention also provides a farm ventilation control method, which is applied to the above ventilation control system; the ventilation control method comprises the following steps:

[0028] Step S1a. In the control unit, the control mode of the fan is switched from manual control to automatic control;

[0029] Step S2a. Input the control parameters required for automatic fan control from the input unit;

[0030] Step S3a. The environmental controller parses the control parameters input by the input unit and generates a corresponding speed value;

[0031] Step S4a. The environmental controller controls the fan operation according to the generated speed value;

[0032] Step S5a. The environmental controller obtains the working parameters of the fan in real time and converts them into corresponding visual data;

[0033] Step S6a. The display unit displays the visualization data.

[0034] Preferably, the ventilation control method further comprises the following steps:

[0035] Step S1b. In the control unit, the fan control mode is switched from automatic control to manual control;

[0036] Step S2b. Adjust the voltage signal of the fan input by the potentiometer;

[0037] Step S3b. The fan adjusts the speed according to the voltage signal input by the potentiometer;

[0038] Step S4b. The environmental controller obtains the working parameters of the fan in real time and converts them into corresponding visual data;

[0039] Step S5b. The display unit displays the visualization data.

[0040] Preferably, both step S5a and step S4b include: the environmental controller monitors the working parameters of the fan when it is working, and determines whether the working parameters of the fan when it is working are abnormal. If so, it sends a corresponding alarm signal to the alarm unit; if not, it continues to monitor the working parameters of the fan when it is working.

[0041] Beneficial effects:

[0042] A ventilation control system and a farm ventilation control method of the present invention can complete the switching of the control mode of the fan through the input unit of the environmental controller. This electronically operated switching switch has the advantage of no loss, and the method of inputting the required control parameters through the input unit can facilitate the operation and use of the system; the environmental controller and the potentiometer can complete the control of the two operating modes of the fan, effectively saving the use of signal lines, thereby reducing the cost of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 Shown is a structural block diagram of a ventilation control system of an embodiment;

[0044] Figure 2 The figure shows a schematic diagram of the fan structure of a ventilation control system of an embodiment;

[0045] Figure 3 Shown is a first flow chart of a farm ventilation control method according to an embodiment;

[0046] Figure 4 A second flow chart of a farm ventilation control method according to an embodiment is shown;

[0047] Figure 5 Shown is a timing control diagram of a farm ventilation control method of an embodiment;

[0048] Figure 6 Shown is a graph of a fan controlled by a potentiometer in a farm ventilation control method according to an embodiment. DETAILED DESCRIPTION

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0050] The technical solution of the present invention is described in detail below with specific embodiments.

[0051] Embodiment 1

[0052] like Figure 1 and 2 As shown, a ventilation control system of this embodiment includes:

[0053] Fan;

[0054] An environmental controller communicating with the fan, including an input unit and a control unit;

[0055] A control unit, used to switch the control mode of the fan to manual control or automatic control;

[0056] An input unit, used for inputting control parameters required for automatic control of the fan;

[0057] A potentiometer is electrically connected to the first connection end of the fan and is used to input a voltage signal to the fan when the fan is manually controlled;

[0058] The environmental controller is used to control the fan according to the control parameters input by the input unit.

[0059] Preferably, the environment controller further comprises a display unit;

[0060] The environmental controller is also used to obtain the working parameters of the fan in real time and convert them into corresponding visual data; the display unit is used to display the visual data.

[0061] Preferably, the ventilation control system further comprises an alarm unit; the environmental controller is further used to monitor abnormal data of the fan and send a corresponding alarm signal to the alarm unit; the alarm unit is used to receive the alarm signal and issue an alarm.

[0062] Preferably, the alarm unit includes an audible and visual alarm; a first connection end of the audible and visual alarm is electrically connected to a first connection end of the environment controller.

[0063] Preferably, the fan includes a relay; the relay includes a single-pole double-throw interface; the single-pole double-throw interface is electrically connected to the second connection end of the sound and light alarm.

[0064] Preferably, the ventilation control system also includes a power supply; the first connection end of the power supply is electrically connected to the second connection end of the environmental controller; the second connection end of the power supply is electrically connected to the second connection end of the fan; and the third connection end of the power supply is electrically connected to the third connection end of the sound and light alarm.

[0065] Preferably, the ventilation control system also includes a temperature sensor; the temperature sensor is connected to the third connection end of the environmental controller; the temperature sensor is used to collect temperature data of the farm and send it to the environmental controller.

[0066] A ventilation control system of the present embodiment can complete the switching of the control mode of the fan through the input unit of the environmental controller. This electronically operated switching switch has the advantage of being lossless, and the method of inputting the required control parameters through the input unit can facilitate the operation and use of the system; the environmental controller and the potentiometer can complete the control of the two operating modes of the fan, effectively saving the use of signal lines, thereby reducing the cost of the entire system.

[0067] Specifically, the control parameters input by the input unit of this embodiment include the day age-minimum air volume table, the temperature offset PID parameters, the allowed switching time of the fan, etc. The environmental controller turns the fan on or off according to these parameters, and automatically sets the fan speed control to meet the air volume requirements when turned on.

[0068] A ventilation control system of the present embodiment can display the fan operating parameters acquired by the environmental controller in real time by providing a display unit, thereby making the fan operating data visible.

[0069] A ventilation control system of this embodiment is provided with an alarm unit. When the environment controller monitors that the fan is working abnormally, an alarm can be issued to notify the user in time.

[0070] A ventilation control system of the present embodiment can realize the completion of the alarm procedure only with the sound and light alarm by setting up the sound and light alarm and connecting with the environmental sensor, without the need for additional alarm equipment.

[0071] A ventilation control system of this embodiment is provided with a single-pole double-throw relay in the fan and connected with the sound and light alarm. When the sound and light alarm sounds an alarm, a level signal can be directly sent to stop the fan.

[0072] A ventilation control system of this embodiment is provided with a power supply, and the power supply can supply power to an environment controller, a fan and an audible and visual alarm.

[0073] A ventilation control system of this embodiment is connected with an environment controller by setting a temperature sensor so that the environment controller can collect temperature data of the farm.

[0074] Specifically, Figure 2As shown, the fan of this embodiment is an electronically controlled EC fan with stepless speed regulation, with 485 communication speed regulation in Modbus bus RTU communication format and fan data information (such as fan power, voltage, circuit, speed, temperature, etc.) collection, and analog signal speed regulation (such as 0-10V to control different speeds of the fan); when 485 communication speed regulation and analog speed regulation exist at the same time, 485 communication speed regulation has a high priority. When 485 communication does not generate effective communication with the fan for a period of time, the fan automatically switches to executing analog signal speed regulation; a relay single-pole double-throw (normally open and normally closed) interface with fault alarm output can be used for ventilation fault alarm.

[0075] Specifically, the environmental controller of this embodiment has a 485 communication interface, the communication format is Modbus bus RTU communication format, and the communication protocol corresponds to the communication protocol of the EC fan; it has relevant sensor input interfaces (such as: temperature sensor input interface); it has a human-computer interaction input unit and a control unit with a touch display, in which parameters of relevant control requirements can be input; the control unit has a switching function between manual control and automatic control of the EC fan; the environmental controller has specific alarm functions (such as: low system voltage, communication interruption, fan failure, etc.).

[0076] Specifically, the environmental controller of this embodiment is electrically connected to the EC fan, and the potentiometer is electrically connected to the EC fan, including power line and signal line connections.

[0077] Specifically, when the EC fan of this embodiment is automatically controlled, the environmental controller and the EC fan use the same Modbus bus RTU protocol to generate 485 signal communication, thereby controlling and observing the ventilation of the EC fan.

[0078] Specifically, when the EC fan of this embodiment is manually controlled, the environmental controller automatically stops communicating effectively with the fan according to the manual control of the EC fan selected by the user in the control unit, forcing the fan to switch to analog signal speed regulation; when the user chooses automatic control of the EC fan in the control unit, the EC fan is still subject to communication control and data observation by the environmental controller.

[0079] Specifically, the present embodiment can collect EC fan parameters such as fan power, current, voltage, speed, faults, etc. in real time; the environmental controller can display or emit sound in the control unit based on these parameters and push relevant alarm information to the user after processing.

[0080] Specifically, the relay single-pole double-throw (normally open and normally closed) interface of the EC fan fault alarm output of this embodiment can be used by users to connect common sound and light alarms or alarm indicator lights.

[0081] Specifically, the ventilation control system of this embodiment uses a dual alarm design to achieve redundant alarms, and when one of the devices fails, it can still effectively alarm and remind the user.

[0082] Specifically, the environmental controller of this embodiment is an FTC01-01 environmental controller, the EC fan is an EHTF710 drum fan, the potentiometer is an R10K potentiometer, and the temperature sensor is an FTT01 temperature sensor. The FTC01-01 environmental controller is electrically connected to the EHTF710 drum fan, including power lines (3 phase lines and 1 ground line), control signal lines (3 lines) and communication lines (2 lines). The FTT01 temperature sensor is connected to the FTC01-01 environmental controller to collect temperature signals, and the sensor is installed in the farm. The sound and light alarms are respectively connected to the FTC01-01 environmental controller and the EHTF710 drum fan.

[0083] The ventilation control system of the present embodiment switches the manual / automatic control of the fan to an operation display interface operation, which has the advantages of long service life and no loss of use. The ventilation control system of the present embodiment does not require special alarm equipment, and its environmental controller and EC fan both have alarm functions. The multiple built-in alarm designs make the alarm more effective, and the reliability of the fan operation is greatly reduced, which greatly reduces the dependence on the traditional method of using special alarm equipment. The EC fan of the ventilation control system of the present embodiment does not need to lead out a separate mode switching line, and the internal processing of the algorithm can determine the mode switching (which can be determined by the effectiveness of communication, the response effect of the fan, the needs of the user, etc.), which greatly improves the reliability and stability, while using less wire and reducing costs.

[0084] Specifically, the user needs to use manual control when the fan outputs a fixed air volume; use automatic control when the fan air volume changes according to the age of the livestock, temperature and other environmental factors; when the automatic control mode fails for some reason, it is forced to switch to manual control.

[0085] Embodiment 2

[0086] This embodiment provides a farm ventilation control method, which is applied to the ventilation control system of embodiment 1; Figures 3 to 6 As shown, the ventilation control method of this embodiment includes the following steps:

[0087] Step S1a. In the control unit, the control mode of the fan is switched from manual control to automatic control;

[0088] Step S2a. Input the control parameters required for automatic fan control from the input unit; (the control parameters include the age-minimum air volume table, the temperature offset PID parameters, the fan's allowed switching time, etc.)

[0089] Step S3a. The environmental controller analyzes the control parameters input by the input unit, automatically calculates the PID and generates the corresponding speed value;

[0090] Step S4a. The environmental controller controls the fan operation according to the generated speed value;

[0091] Step S5a. The environmental controller obtains the working parameters of the fan in real time and converts them into corresponding visual data;

[0092] Step S6a. The display unit displays the visualization data.

[0093] Preferably, the ventilation control method further comprises the following steps:

[0094] Step S1b. In the control unit, the fan control mode is switched from automatic control to manual control;

[0095] Step S2b. Adjust the voltage signal of the fan input by the potentiometer;

[0096] Step S3b. The fan adjusts the speed according to the voltage signal input by the potentiometer;

[0097] Step S4b. The environmental controller obtains the working parameters of the fan in real time and converts them into corresponding visual data;

[0098] Step S5b. The display unit displays the visualization data.

[0099] Preferably, both step S5a and step S4b include: the environmental controller monitors the working parameters of the fan when it is working, and determines whether the working parameters of the fan when it is working are abnormal. If so, a corresponding alarm signal is sent to the alarm unit; if not, the working parameters of the fan when it is working are continuously monitored. (The environmental controller will read the fan operation status code, fan fault code, fan speed, fan power and other information to make a comprehensive analysis and judgment)

[0100] Specifically, the voltage signal of the fan input by the potentiometer has a linear mode or a nonlinear mode, wherein the voltage-speed curve of the linear mode is as follows: Figure 6 shown.

[0101] Specifically, when the EC fan is switched to automatic control, the EHTF710 drum fan operates according to the parameters set by the user in the input unit (for example: temperature curve operation, time node operation, fixed operation, etc.), and the FTC01-01 environmental controller and the EHTF710 drum fan automatically control ventilation.

[0102] Specifically, when the EC fan is switched to manual control, the EHTF710 drum fan adjusts the fan speed according to the (0-10V) voltage signal provided by the R10K potentiometer.

[0103] Specifically, a ventilation fault is artificially introduced (such as a blocked fan, etc., which triggers the sound and light alarm of the FTC01-01 environmental controller and the EHTF710 drum fan), and the sound and light alarm is triggered to alarm.

[0104] The ventilation control method of this embodiment enables a safer and lower-cost ventilation control solution to be obtained in places requiring ventilation, such as aquaculture and agriculture; the fan speed, power, current, voltage, faults, etc. can be viewed in real time, and combined with the control of the environmental controller, the safety of equipment and production is greatly improved; the cost investment is lower than that of traditional control solutions, which can reduce costs and increase efficiency for maintenance; the environmental controller can freely switch between manual and automatic control modes, reducing the difficulty of work for production employees; when the environmental controller fails or shuts down, it automatically switches to manual control to ensure the operation of the fan and normal ventilation.

[0105] The above is a detailed description of an embodiment of a ventilation control system and a farm ventilation control method provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A ventilation control system, characterized in that: include: Fan; An environmental controller communicating with the fan, comprising an input unit and a control unit; The control unit is used to switch the control mode of the fan to manual control or automatic control; The input unit is used to input control parameters required for automatic control of the fan; A potentiometer, electrically connected to the first connection end of the fan, and used to input a voltage signal to the fan when the fan is manually controlled; The environmental controller is used to control the fan according to the control parameters input by the input unit.

2. The ventilation control system according to claim 1, characterized in that: The environmental controller also includes a display unit; the environmental controller is also used to obtain the working parameters of the fan in real time when the fan is working, and convert them into corresponding visual data; the display unit is used to display the visual data.

3. The ventilation control system according to claim 1, characterized in that: The ventilation control system also includes an alarm unit; the environmental controller is also used to monitor abnormal data of the fan and send a corresponding alarm signal to the alarm unit; the alarm unit is used to receive the alarm signal and issue an alarm.

4. The ventilation control system according to claim 3, characterized in that: The alarm unit comprises an audible and visual alarm; a first connection end of the audible and visual alarm is electrically connected to a first connection end of the environment controller.

5. The ventilation control system according to claim 4, characterized in that: The fan includes a relay; the relay includes a single-pole double-throw interface; the single-pole double-throw interface is electrically connected to the second connection end of the sound and light alarm.

6. The ventilation control system according to claim 4, characterized in that: The ventilation control system also includes a power supply; the first connection end of the power supply is electrically connected to the second connection end of the environmental controller; the second connection end of the power supply is electrically connected to the second connection end of the fan; the third connection end of the power supply is electrically connected to the third connection end of the sound and light alarm.

7. The ventilation control system according to claim 1, characterized in that: The ventilation control system also includes a temperature sensor; the temperature sensor is connected to the third connection end of the environmental controller; the temperature sensor is used to collect temperature data of the farm and send it to the environmental controller.

8. A farm ventilation control method, characterized in that: Applicable to the ventilation control system according to any one of claims 1 to 7; the ventilation control method comprises the following steps: Step S1a. In the control unit, the control mode of the fan is switched from manual control to automatic control; Step S2a. Input the control parameters required for automatic fan control from the input unit; Step S3a. The environmental controller parses the control parameters input by the input unit and generates a corresponding speed value; Step S4a. The environmental controller controls the fan operation according to the generated speed value; Step S5a. The environmental controller obtains the working parameters of the fan in real time and converts them into corresponding visual data; Step S6a. The display unit displays the visualization data.

9. The ventilation control method according to claim 8, characterized in that: The ventilation control method further comprises the following steps: Step S1b. In the control unit, the fan control mode is switched from automatic control to manual control; Step S2b. Adjust the voltage signal of the fan input by the potentiometer; Step S3b. The fan adjusts the speed according to the voltage signal input by the potentiometer; Step S4b. The environmental controller obtains the working parameters of the fan in real time and converts them into corresponding visual data; Step S5b. The display unit displays the visualization data.

10. The ventilation control method according to claim 9, characterized in that: Both step S5a and step S4b include: the environmental controller monitors the working parameters of the fan when it is working, and determines whether the working parameters of the fan when it is working are abnormal. If so, it sends a corresponding alarm signal to the alarm unit; if not, it continues to monitor the working parameters of the fan when it is working.

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