Agricultural machinery operation carbon emission measuring and calculating method based on operation parameters

Abstract

The invention discloses an agricultural machinery operation carbon emission measuring and calculating method based on operation parameters, and belongs to the technical field of agricultural machinery carbon emission monitoring and evaluation. The problem of inaccurate measurement and calculation of the carbon emission of agricultural machinery operation caused by changeable existing operation conditions is solved. The method comprises the steps that firstly, the output power of an engine is calculated, a fuel consumption rate model is established through the output power, the fuel density of the engine and the combustion efficiency of the engine, and instantaneous fuel consumption is obtained; the real-time carbon emission rate is obtained in combination with the instantaneous fuel consumption; calculating a load factor according to the advancing speed, the slip rate and the operation soil parameters of the agricultural machine, and obtaining a load correction factor by using the load factor; calculating an environment temperature correction factor and an altitude correction factor according to the agricultural machinery operation environment parameters and the altitude of the operation area; and correcting the carbon emission rate by using three correction factors, calculating the work consumed by the operation, and calculating the comprehensive carbon emission of the agricultural machinery operation in combination with the corrected carbon emission rate. The method is suitable for agricultural machinery operation carbon emission calculation.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery carbon emission monitoring and assessment technology. Background Technology

[0002] Currently, with the intensification of global climate change and the introduction of "dual carbon" targets, agricultural carbon emissions have become a critical issue requiring urgent attention. Agricultural machinery, as a vital component of agricultural production, generates significant carbon emissions from fuel combustion during its operation, making it a major source of greenhouse gas emissions from agriculture. Therefore, accurately and systematically assessing the carbon emissions from agricultural machinery operations is fundamental to achieving agricultural carbon reduction and promoting the development of green and low-carbon agriculture.

[0003] However, most existing agricultural machinery carbon emission calculations are based on empirical values ​​per unit area or annual statistical data, lacking dynamic response analysis of operational parameters and failing to reflect emission differences under different operating conditions and environmental conditions. The timeliness and accuracy of the calculation results are also limited. Furthermore, there is currently a lack of a comprehensive carbon emission calculation framework that can be embedded in various types of agricultural machinery, which restricts the practical application of agricultural machinery carbon emission accounting.

[0004] Therefore, there is an urgent need for a carbon emission calculation method that integrates real-time operating parameters, environmental factors, and mechanical load characteristics, which can dynamically and accurately assess the carbon emission level of agricultural machinery under varying operating conditions, thus filling the gaps in existing methods. Summary of the Invention

[0005] This invention aims to address the problem of inaccurate calculation of carbon emissions from agricultural machinery operations due to the variability of existing operating conditions, and proposes a method for calculating carbon emissions from agricultural machinery operations based on operating parameters.

[0006] The method for calculating carbon emissions from agricultural machinery operations based on operational parameters as described in this invention includes:

[0007] Step 1: Collect torque and speed during agricultural machinery operation in real time, calculate engine output power, and use the output power in combination with engine fuel density and engine combustion efficiency to establish a fuel consumption rate model and obtain instantaneous fuel consumption.

[0008] Step 2: Based on the carbon content in the fuel and the molecular weight ratio of carbon to carbon dioxide, combined with instantaneous fuel consumption, establish a carbon emission model to obtain the real-time carbon emission rate.

[0009] Step 3: Calculate the load factor based on the agricultural machinery's travel speed, slip ratio, and working soil parameters; use the load factor to obtain the load correction factor; calculate the ambient temperature correction factor and altitude correction factor based on the agricultural machinery's operating environment parameters and the altitude of the operating area; use the load correction factor, ambient temperature correction factor, and altitude correction factor to correct the carbon emission rate and obtain the corrected carbon emission rate.

[0010] Step 4: Calculate the work consumed in the operation based on the working area and time of the agricultural machinery. Using the work consumed in the operation and the corrected carbon emission rate, calculate the comprehensive carbon emissions of the agricultural machinery operation.

[0011] Furthermore, in this invention, the formula for calculating the engine's output power in step one is:

[0012]

[0013] in: It's torque. It's the rotational speed.

[0014] Furthermore, in this invention, the formula for obtaining the instantaneous fuel consumption in step one is:

[0015]

[0016] in: It is the fuel consumption rate per unit time. It refers to engine combustion efficiency. It is the lower heating value of the fuel. It refers to fuel density.

[0017] Furthermore, in this invention, the method for obtaining the real-time carbon emission rate in step two is as follows:

[0018] First, calculate the carbon emission factor:

[0019]

[0020] in: It is the CO2 emission factor per unit mass of fuel, which is the carbon content in the fuel. It is the complete oxidation rate. It is the molecular weight ratio of carbon converted into carbon dioxide;

[0021] A carbon emission model is established using the aforementioned carbon emission factors to calculate the real-time carbon emission rate:

[0022]

[0023] in: This represents the real-time carbon emission rate.

[0024] Furthermore, in this invention, the formula for calculating the load factor in step three is:

[0025]

[0026] Among them, traction power :

[0027]

[0028] Among them, traction resistance :

[0029]

[0030] Effective speed after slip repair :

[0031]

[0032] in, It is the slip ratio. It is the speed of travel. It is the soil resistance per unit area. It is the working width. It refers to the depth of the task.

[0033] Furthermore, in this invention, the formula for the load correction factor in step three is:

[0034]

[0035] in, These are the empirical coefficients for the correction amount, the empirical coefficients for the first power, and the empirical coefficients for the square term, respectively.

[0036] Furthermore, in this invention, in step three, the method for calculating the environmental temperature correction factor and altitude correction factor based on the agricultural machinery operating environment parameters and the altitude of the operating area is as follows:

[0037] The ambient temperature correction factor is:

[0038]

[0039] in: For temperature sensitivity coefficient, The current temperature. The reference temperature is 20 degrees Celsius.

[0040] The altitude correction factor is:

[0041]

[0042] in: For high attenuation coefficient, The altitude of the work area.

[0043] Furthermore, in this invention, in step three, the formula for obtaining the corrected carbon emission rate is:

[0044]

[0045] in, This represents the comprehensive operating condition correction factor;

[0046] .

[0047] Furthermore, in this invention, in step four, the formula for calculating the energy consumed during operation, based on the working area and working time of the agricultural machinery, is as follows:

[0048]

[0049] in, It is the area per unit of work. , It's homework time; , The total area of ​​the work. Indicates the working width.

[0050] Furthermore, in this invention, in step four, the formula for calculating the comprehensive carbon emissions of agricultural machinery operations is:

[0051] .

[0052] The carbon emission calculation method based on agricultural machinery operation parameters described in this invention enables dynamic, refined, and scientific calculation of carbon emissions during agricultural machinery operation by establishing a fuel consumption rate model, a carbon emission model, a load correction model, and an environmental and operating condition correction model. This method uses multiple parameters as inputs, including engine output power, load conditions, operating speed, slip ratio, operating depth, soil resistance, ambient temperature, and altitude, fully considering the impact of the operating environment and actual operating conditions on fuel consumption and emission efficiency, making the carbon emission estimation more closely reflect real-world conditions. Attached Figure Description

[0053] Figure 1 This is a flowchart of the method described in this invention. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0055] Specific implementation method one: Refer to Figure 1 This embodiment specifically describes a method for calculating carbon emissions from agricultural machinery operations based on operational parameters, including:

[0056] Step 1: Collect torque and speed during agricultural machinery operation in real time, calculate engine output power, and establish a fuel consumption rate model using the output power, engine fuel density and engine combustion efficiency to obtain instantaneous fuel consumption.

[0057] Step 2: Based on the carbon content in the fuel and the molecular weight ratio of carbon to carbon dioxide, combined with instantaneous fuel consumption, establish a carbon emission model to obtain the real-time carbon emission rate.

[0058] Step 3: Calculate the load factor based on the agricultural machinery's travel speed, slip ratio, and working soil parameters; use the load factor to obtain a load correction factor; calculate the ambient temperature correction factor and altitude correction factor based on the agricultural machinery's operating environment parameters and the altitude of the operating area; use the load correction factor, ambient temperature correction factor, and altitude correction factor to correct the carbon emission rate and obtain the corrected carbon emission rate.

[0059] Step 4: Calculate the work consumed in the operation based on the working area and time of the agricultural machinery. Using the work consumed in the operation and the corrected carbon emission rate, calculate the comprehensive carbon emissions of the agricultural machinery operation.

[0060] Furthermore, in this invention, the formula for calculating the engine's output power in step one is:

[0061]

[0062] in: It's torque. It refers to the rotational speed.

[0063] Furthermore, in this invention, the formula for obtaining the instantaneous fuel consumption in step one is:

[0064]

[0065] in: It is the fuel consumption rate per unit time. It refers to engine combustion efficiency. It is the lower heating value of the fuel. It refers to fuel density.

[0066] Furthermore, in this invention, the method for obtaining the real-time carbon emission rate in step two is as follows:

[0067] First, calculate the carbon emission factor:

[0068]

[0069] in: It is the CO2 emission factor per unit mass of fuel, which is the carbon content in the fuel. It is the complete oxidation rate. It is the molecular weight ratio of carbon converted into carbon dioxide;

[0070] A carbon emission model is established using the aforementioned carbon emission factors to calculate the real-time carbon emission rate:

[0071]

[0072] in: This represents the real-time carbon emission rate.

[0073] Furthermore, in this invention, the formula for calculating the load factor in step three is:

[0074]

[0075] Among them, traction power :

[0076]

[0077] Among them, traction resistance :

[0078]

[0079] Effective speed after slip repair :

[0080]

[0081] in, It is the slip ratio. It is the speed of travel. It is the soil resistance per unit area. It is the working width. It refers to the depth of the task.

[0082] Furthermore, in this invention, the formula for the load correction factor in step three is:

[0083]

[0084] in, These are the empirical coefficients for the correction amount, the empirical coefficients for the first power, and the empirical coefficients for the square term, respectively.

[0085] Furthermore, in this invention, in step three, the method for calculating the environmental temperature correction factor and altitude correction factor based on the agricultural machinery operating environment parameters and the altitude of the operating area is as follows:

[0086] The ambient temperature correction factor is:

[0087]

[0088] in: For temperature sensitivity coefficient, The current temperature. The reference temperature is 20 degrees Celsius.

[0089] The altitude correction factor is:

[0090]

[0091] in: For high attenuation coefficient, The altitude of the work area.

[0092] Furthermore, in this invention, in step three, the formula for obtaining the corrected carbon emission rate is:

[0093]

[0094] in, This represents the comprehensive operating condition correction factor;

[0095] .

[0096] Furthermore, in this invention, in step four, the formula for calculating the energy consumed during operation, based on the working area and working time of the agricultural machinery, is as follows:

[0097]

[0098] in, It is the area per unit of work. , It's homework time; , The total area of ​​the work. Indicates the working width.

[0099] Furthermore, in this invention, in step four, the formula for calculating the comprehensive carbon emissions of agricultural machinery operations is:

[0100] .

[0101] In this invention, the process of implementation derivation is as follows:

[0102] 1. Fuel consumption rate model: (1) Output power: ,in: It's torque. It's the rotational speed.

[0103] (2) Instantaneous fuel consumption rate: ,in: It is the fuel consumption rate per unit time. It refers to engine combustion efficiency. It is the lower heating value of the fuel. It refers to fuel density.

[0104] 2. Carbon emission model: (1) Carbon emission factor: ;

[0105] in, It is the CO2 emission factor per unit mass of fuel; It refers to the carbon content in the fuel. It is the complete oxidation rate. It is the molecular weight ratio of carbon converted into carbon dioxide.

[0106] (2) Real-time carbon emission rate: ;

[0107] (3) Among them: This represents the real-time carbon emission rate.

[0108] 3. Load correction model: (1) Effective velocity after slip correction: ,in: For slip ratio, This refers to the speed of travel.

[0109] (2) Traction resistance: ,in: For soil resistance per unit area, For the working width, This refers to the depth of the operation.

[0110] Traction power: ;

[0111] Loading factor: ;

[0112] (4) Load correction factor: ,in: This is an empirical coefficient.

[0113] 4. Environmental and operating condition correction model: (1) Ambient temperature correction factor: ,in: For temperature sensitivity coefficient, The current temperature. The reference temperature is 20 degrees Celsius.

[0114] (2) Altitude correction factor: ,in: For high attenuation coefficient, The altitude of the work area;

[0115] (3) Comprehensive working condition correction factor: ;

[0116] (4) Corrected carbon emission rate: ;

[0117] 5. Work consumed in the operation: (1) Unit area of ​​the operation: ;

[0118] (2) Work time: ;in: The total area of ​​the work;

[0119] (3) Work consumed by the task: ;

[0120] 6. Carbon emission calculation: (1) Overall carbon emissions: .

[0121] Compared to traditional calculation methods based on empirical values ​​or static estimations, the method described in this invention has significant advantages in data acquisition accuracy, model adaptability, and estimation accuracy. Firstly, this method enables real-time estimation of carbon emissions, providing immediate feedback for carbon management and control in agricultural production operations. Secondly, it is adaptable to different types of agricultural machinery and various operating scenarios, possessing broad applicability and promotional value. Thirdly, by reasonably adjusting power load and environmental parameters, it improves the robustness of carbon emission calculations under complex operating conditions. Ultimately, this invention can provide fundamental data support for applications such as agricultural carbon footprint accounting, agricultural machinery energy efficiency assessment, green agricultural machinery scheduling, and low-carbon operation path optimization, helping agriculture achieve precise carbon emission reduction and green sustainable development goals.

[0122] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A method for calculating carbon emissions from agricultural machinery operations based on operational parameters, characterized in that, include: Step 1: Collect torque and speed during agricultural machinery operation in real time, calculate engine output power, and establish a fuel consumption rate model using the output power, engine fuel density and engine combustion efficiency to obtain instantaneous fuel consumption. Step 2: Based on the carbon content in the fuel and the molecular weight ratio of carbon to carbon dioxide, combined with instantaneous fuel consumption, establish a carbon emission model to obtain the real-time carbon emission rate. Step 3: Calculate the load factor based on the agricultural machinery's travel speed, slip ratio, and working soil parameters, and use the load factor to obtain the load correction factor; Based on the agricultural machinery operation environment parameters and the altitude of the operation area, calculate the environmental temperature correction factor and the altitude correction factor; The carbon emission rate is corrected using the load correction factor, ambient temperature correction factor, and altitude correction factor to obtain the corrected carbon emission rate. Step 4: Calculate the work consumed in the operation based on the working area and time of the agricultural machinery. Using the work consumed in the operation and the corrected carbon emission rate, calculate the comprehensive carbon emissions of the agricultural machinery operation.

2. The method for calculating carbon emissions from agricultural machinery operations based on operational parameters according to claim 1, characterized in that, In step one, the formula for calculating the engine's output power is: in: It's torque. It refers to the rotational speed.

3. The method for calculating carbon emissions from agricultural machinery operations based on operational parameters according to claim 1, characterized in that, In step one, the formula for obtaining instantaneous fuel consumption is: in: It is the fuel consumption rate per unit time. It refers to engine combustion efficiency. It is the lower heating value of the fuel. It refers to fuel density.

4. The method for calculating carbon emissions from agricultural machinery operations based on operational parameters according to claim 1, characterized in that, In step two, the method for obtaining the real-time carbon emission rate is as follows: First, calculate the carbon emission factor: in: It is the CO2 emission factor per unit mass of fuel, which is the carbon content in the fuel. It is the complete oxidation rate. It is the molecular weight ratio of carbon converted into carbon dioxide; A carbon emission model is established using the aforementioned carbon emission factors to calculate the real-time carbon emission rate: in: This represents the real-time carbon emission rate.

5. The method for calculating carbon emissions from agricultural machinery operations based on operational parameters according to claim 1, characterized in that, In step three, the formula for calculating the load factor is: Among them, traction power : Among them, traction resistance : Effective speed after slip repair : in, It is the slip ratio. It is the speed of travel. It is the soil resistance per unit area. It is the working width. It refers to the depth of the task.

6. The method for calculating carbon emissions from agricultural machinery operations based on operational parameters according to claim 1, characterized in that, In step three, the formula for the load correction factor is: in, These are the empirical coefficients for the correction amount, the empirical coefficients for the first power, and the empirical coefficients for the square term, respectively.

7. The method for calculating carbon emissions from agricultural machinery operations based on operational parameters according to claim 1, characterized in that, In step three, the method for calculating the environmental temperature correction factor and altitude correction factor based on the agricultural machinery operation environment parameters and the altitude of the operation area is as follows: The ambient temperature correction factor is: in: For temperature sensitivity coefficient, The current temperature. The reference temperature is 20 degrees Celsius. The altitude correction factor is: in: For high attenuation coefficient, The altitude of the work area.

8. The method for calculating carbon emissions from agricultural machinery operations based on operational parameters according to claim 1, characterized in that, In step three, the formula for obtaining the corrected carbon emission rate is: in, This represents the comprehensive operating condition correction factor; 。 9. The method for calculating carbon emissions from agricultural machinery operations based on operational parameters according to claim 1, characterized in that, In step four, the formula for calculating the energy consumed during the operation, based on the working area and time of the agricultural machinery, is as follows: in, It is the area per unit of work. , It's homework time; , The total area of ​​the work. Indicates the width of the work area.

10. The method for calculating carbon emissions from agricultural machinery operations based on operational parameters according to claim 1, characterized in that, In step four, the formula for calculating the overall carbon emissions from agricultural machinery operations is: 。

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