KR20240048139A - Apparatus and method for notificating greenhouse gases generation of self-driving agricultural vehicles - Google Patents

Abstract

The present invention relates to a greenhouse gas generation notification device and method for agricultural vehicles that informs the amount of greenhouse gases generated by agricultural vehicles and whether greenhouse gases are generated due to failure of exhaust gas reduction devices included in agricultural vehicles. The greenhouse gas generation notification method of agricultural vehicles according to this embodiment includes the steps of calculating engine RPM and engine load based on status information of the engine provided in the agricultural vehicle, and the results of testing a plurality of agricultural vehicles from memory. , loading a greenhouse gas generation table in which greenhouse gas generation amounts are constructed in response to representative engine RPM and representative engine load, and engine RPM calculated from the greenhouse gas generation table based on status information of the engine provided in the agricultural vehicle. and extracting the amount of greenhouse gas generation corresponding to the engine load, and outputting the amount of greenhouse gas generation corresponding to the engine RPM and engine load so that workers working with the agricultural vehicle can view it.

Description

Apparatus and method for notifying greenhouse gases generation of self-driving agricultural vehicles}

The present invention relates to a greenhouse gas generation notification device and method for agricultural vehicles that informs the amount of greenhouse gases generated by agricultural vehicles and whether greenhouse gases are generated due to failure of exhaust gas reduction devices included in agricultural vehicles.

Recently, as global warming has emerged as a global issue, efforts are being made legally and technically to reduce greenhouse gas emissions from automobiles through various methods. Currently, in Korea, there is no clear legal content to reduce greenhouse gas emissions from agricultural vehicles, and this is not set as a high technical goal. However, the need to reduce greenhouse gas emissions from agricultural vehicles is increasing day by day.

The above-mentioned background technology is technical information that the inventor possessed for deriving the present invention or acquired in the process of deriving the present invention, and cannot necessarily be said to be known art disclosed to the general public before the application for the present invention.

Domestic Patent Publication No. 10-2019-0134889 (2019.12.05)

One object of the present invention is to inform operators of agricultural vehicles of the amount of greenhouse gases generated and encourage them to reduce greenhouse gases.

One object of the present invention is to inform operators of agricultural vehicles whether an exhaust gas reduction device is malfunctioning and thereby reduce greenhouse gas emissions caused by malfunction of the exhaust gas reduction device.

The problem to be solved by the present invention is not limited to the problems mentioned above, and other problems and advantages of the present invention that are not mentioned can be understood through the following description and can be understood more clearly through the embodiments of the present invention. It will be. In addition, it can be seen that the problems and advantages to be solved by the present invention can be realized by the means and combinations thereof indicated in the patent claims.

The greenhouse gas generation notification method of an agricultural vehicle according to this embodiment is a greenhouse gas generation notification method performed by a processor of a greenhouse gas generation notification device of an agricultural vehicle, and the engine RPM is based on the status information of the engine provided in the agricultural vehicle. and calculating the engine load, and loading a greenhouse gas generation table in which the greenhouse gas generation amount is constructed corresponding to the representative engine RPM and the representative engine load as a result of testing a plurality of agricultural vehicles from memory, and the greenhouse gas generation amount table is constructed. From the gas generation table, extracting the greenhouse gas generation amount corresponding to the engine RPM and engine load calculated based on the status information of the engine provided in the agricultural vehicle, and the engine RPM so that workers working with the agricultural vehicle can view it. And it may include outputting the greenhouse gas generation amount corresponding to the engine load.

The greenhouse gas generation notification device of an agricultural vehicle according to the present embodiment includes a processor and a memory operably connected to the processor and storing at least one code executed by the processor, and the memory, when executed through the processor, causes the processor to The engine RPM and engine load are calculated based on the status information of the engine provided in the agricultural vehicle, and as a result of testing multiple agricultural vehicles from memory, the amount of greenhouse gas generation is established in response to the representative engine RPM and representative engine load. Load the greenhouse gas generation table, extract the greenhouse gas generation amount corresponding to the engine RPM and engine load calculated based on the status information of the engine equipped in the agricultural vehicle from the greenhouse gas generation table, and allow the worker driving the agricultural vehicle to You can save code that causes the greenhouse gas emissions corresponding to engine RPM and engine load to be displayed for viewing.

In addition, another method for implementing the present invention, another system, and a computer-readable recording medium storing a computer program for executing the method may be further provided.

Other aspects, features and advantages in addition to those described above will become apparent from the following drawings, claims and detailed description of the invention.

According to the present invention, it is possible to inform operators of agricultural vehicles of the amount of greenhouse gases generated and encourage them to reduce greenhouse gases.

In addition, it is possible to inform operators of agricultural vehicles whether the exhaust gas reduction device is malfunctioning, thereby encouraging them to reduce greenhouse gas emissions caused by malfunction of the exhaust gas reduction device.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1 is a diagram for explaining an example of a work environment including a farming vehicle according to an embodiment.
FIG. 2 is a diagram illustrating an example of an agricultural vehicle that processes greenhouse gas generation notifications according to an embodiment.
Figure 3 is a diagram for explaining an example of a greenhouse gas generation table stored in a memory according to an embodiment.
Figure 4 is a diagram illustrating a greenhouse gas generation table according to an embodiment in a three-dimensional form.
FIG. 5 is a diagram illustrating an example of a fault code of an exhaust gas reduction device stored in a memory and detailed fault information corresponding to the fault code, according to an embodiment.
FIG. 6 is a diagram illustrating an example of an agricultural vehicle that processes greenhouse gas generation notifications according to another embodiment.
FIG. 7(a) and FIG. 7(b) are diagrams for explaining an example of controlling an agricultural vehicle according to an embodiment.
Figure 8 is a diagram for explaining an example of data acquired from an agricultural vehicle according to an embodiment.
Figure 9 is a diagram for explaining an example of controlling an agricultural vehicle according to an embodiment.
Figure 10 is a flowchart illustrating a method for notifying greenhouse gas emissions from agricultural vehicles according to an embodiment.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments presented below, but may be implemented in various different forms, and should be understood to include all conversions, equivalents, and substitutes included in the spirit and technical scope of the present invention. . The embodiments presented below are provided to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. In describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof. Terms such as first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

Additionally, in this application, a “part” may be a hardware component, such as a processor or circuit, and/or a software component executed by the hardware component, such as a processor.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, identical or corresponding components are assigned the same drawing numbers and overlapping descriptions thereof are omitted. I decided to do it.

In the following examples, the terms first, second, etc. are used not in a limiting sense but for the purpose of distinguishing one component from another component.

In the following examples, singular terms include plural terms unless the context clearly dictates otherwise.

In the following embodiments, terms such as include or have mean the presence of features or components described in the specification, and do not exclude in advance the possibility of adding one or more other features or components.

In cases where an embodiment can be implemented differently, a specific process sequence may be performed differently from the described sequence. For example, two processes described in succession may be performed substantially at the same time, or may be performed in an order opposite to the order in which they are described.

1 is a diagram for explaining an example of a work environment including a farming vehicle according to an embodiment. Referring to FIG. 1, the work environment 1 may include an agricultural vehicle 100, a server 200, a worker device 300 operated by a worker, a subject other than the worker 400, and a satellite 500. there is.

The agricultural vehicle 100 may include a vehicle that can be used in agriculture. As an example, the agricultural vehicle 100 can perform agricultural work that must be performed for agriculture (e.g., plowing rice paddies or fields, transporting agricultural materials, etc.), and allows workers to move to workplaces such as farmland. It can also be used to This agricultural vehicle 100 may be a tractor, but is not limited thereto.

Meanwhile, the agricultural vehicle 100 may not be limited to just a vehicle used in agriculture. In other words, the agricultural vehicle 100 may refer to a means of transportation that is not limited to those used in agriculture, such as ordinary passenger cars, trucks, and motorcycles.

The agricultural vehicle 100 may perform wired communication and/or wireless communication with the worker device 300 and other subjects 400 through the server 200. Additionally, the agricultural vehicle 100 may perform wireless communication with a satellite 500 to implement various functions using GPS signals.

In one embodiment, the wired communication method may be connected through a wired cable, but is not limited to this. Meanwhile, wireless communication methods may include, but are not limited to, NFC (Near Field Communication), ZIGBEE, Bluetooth, ultra-wideband (UWB) communication, LTE, GNSS (Global Navigation Satellite System), and eCALL.

Meanwhile, communication can also be performed between modules included in the agricultural vehicle 100. For example, communication may be performed within the agricultural vehicle 100 by Ethernet, CAN-FD, etc., but is not limited thereto.

Data acquired from the agricultural vehicle 100 may be transmitted to the worker device 300 and another subject 400 through the server 200. Here, the other subject 400 may be a natural person or corporation other than the worker, as well as a device used by the other subject 400 (for example, various devices capable of communicating with other devices).

Data acquired from the agricultural vehicle 100 may be transmitted to the worker device 300 and another subject 400 through the server 200. Additionally, the worker device 300 and/or other entity 400 may transmit data to the agricultural vehicle 100. Accordingly, the worker device 300 and/or other subject 400 may perform various tasks based on data about the agricultural vehicle 100. Additionally, as the agricultural vehicle 100 communicates with the worker device 300, the worker can perform various controls on the agricultural vehicle 100 through the worker device 300. In one embodiment, a worker may operate, park, and perform agricultural work on the agricultural vehicle 100 using the worker device 300 without directly boarding the agricultural vehicle 100.

In addition, in FIG. 1, the agricultural vehicle 100 is shown to communicate with the worker device 300 and/or another subject 400 through the server 200, but the present invention is not limited thereto. For example, the agricultural vehicle 100, the worker device 300, and/or another entity 400 may have a direct communication connection. Accordingly, the worker device 300 and/or other subject 400 can transmit and receive data about the agricultural vehicle 100 and control the agricultural vehicle 100 without going through the server 200.

In this embodiment, the other entity 400 may be any entity related to the agricultural vehicle 100 except the worker. For example, the other entity 400 is an entity directly or indirectly related to the agricultural vehicle 100, such as a manufacturer of the agricultural vehicle 100, a seller of the agricultural vehicle 100, a financial institution, or a government agency, without limitation. It can be. Here, directly/indirectly related may be related to the production, sales, operation, finance, policy, etc. of the agricultural vehicle 100, but is not limited thereto.

The agricultural vehicle 100 may be a mechanical vehicle. Here, the mechanical vehicle may refer to a traditional vehicle in which mechanical signals are mainly used to control the agricultural vehicle 100. In this case, a separate control module is attached to the agricultural vehicle 100, and the attached control module communicates with the server 200 or the worker device 300, so that the agricultural vehicle 100 can be controlled.

Meanwhile, the agricultural vehicle 100 may be an electronic vehicle. Here, the electronic vehicle may refer to a vehicle in which electronic signals are mainly used to control the agricultural vehicle 100. In this case, the agricultural vehicle 100 may be controlled by communicating with the server 200 or the worker device 300.

The server 200 can transmit and receive data related to the agricultural vehicle 100 and store it. In addition, the server 200 processes the stored data in a form that can be usefully utilized by the worker device 300 and/or other subjects 400, and the processed data is processed by the worker device 300 and/or other subjects 400. ) can be forwarded to.

According to the above, the work environment 1 according to this embodiment may provide the worker device 300 and/or other subjects 400 with an environment different from the environment in which existing agricultural vehicles are used. Specifically, previously, workers directly drove agricultural vehicles and performed agricultural work. Additionally, data that can be obtained from agricultural vehicles must be entered and remembered by workers themselves, and other entities 400 had to rely on workers to obtain information about agricultural vehicles.

However, as the working environment 1 according to this embodiment is operated, the agricultural vehicle 100 can operate unmanned, and the worker can operate the agricultural vehicle 100 at a space away from the agricultural vehicle 100 through the worker device 300. (100) can be freely controlled. Additionally, the worker device 300 and other subjects 400 can collect data related to the agricultural vehicle 100 without any additional effort, and process the data collected from the agricultural vehicle 100. Alternatively, the worker device 300 and other subjects 400 may collect processed results about data related to the agricultural vehicle 100 from the server 200.

FIG. 2 is a diagram illustrating an example of an agricultural vehicle that processes greenhouse gas generation notifications according to an embodiment. In the following description, parts that overlap with the description of FIG. 1 will be omitted.

Referring to FIG. 2, the agricultural vehicle 100 that processes greenhouse gas generation notification includes a processor 110, a memory 120, a display unit 130, an exhaust gas reduction device 140, and a communication network 150. can do.

The processor 110 can control the entire operation of the agricultural vehicle 100. In this embodiment, the processor 110 may estimate the amount of greenhouse gases generated by the agricultural vehicle 100 and inform the operator. By estimating the amount of greenhouse gases generated by the agricultural vehicle 100 currently in operation and informing the workers, it is possible to raise workers' awareness and induce them to reduce greenhouse gases.

In another embodiment, the processor 110 monitors the failure state of the exhaust gas reduction device 140 included in the agricultural vehicle 100, and when a failure occurs in the exhaust gas reduction device 140, the exhaust gas reduction device 140 is monitored. The occurrence of a malfunction of the device 140 can be notified to the operator. If the exhaust gas reduction device 140 malfunctions, exhaust gas may be generated and affect environmental pollution. Accordingly, the processor 110 can reduce exhaust gas by notifying the worker of a malfunction of the exhaust gas reduction device 140 and encouraging the worker to quickly repair the exhaust gas reduction device 140. In this embodiment, since exhaust gas contains components similar to greenhouse gases, exhaust gas and greenhouse gases may be mixed in the same sense.

In this embodiment, the processor (processor, 110) may refer to a data processing device built into hardware, for example, having a physically structured circuit to perform a function expressed by code or instructions included in a program. there is. Examples of data processing devices built into hardware include processing devices such as microprocessors, central processing units, processor cores, multiprocessors, ASICs, and FPGAs, but the scope of the present invention is not limited thereto. .

The memory 120 is operably connected to the processor 110 and may store at least one code in association with an operation performed by the processor 110.

Additionally, the memory 120 may perform a function of temporarily or permanently storing data processed by the processor 110.

In this embodiment, a greenhouse gas generation table may be stored in the memory 120. The greenhouse gas generation table may be a data set storing the greenhouse gas generation amount measured in response to engine RPM and engine load for a plurality of agricultural vehicles. In general, the fuel consumption and greenhouse gas emissions of agricultural vehicles can be roughly proportional. However, it may not be proportional in all cases. In this embodiment, the fuel consumption of the agricultural vehicle may be related to engine revolutions per minute (RPM), that is, engine speed and engine load. Although it has been confirmed that the amount of greenhouse gas generation varies depending on engine RPM and engine load, it is inaccurate to guide workers to greenhouse gas generation based on fuel consumption alone, and the amount of greenhouse gas generation can be accurately guided based on engine RPM and engine load.

Figure 3 shows a greenhouse gas generation table storing greenhouse gas generation amounts measured in response to representative engine RPM and representative engine load for a plurality of agricultural vehicles. Referring to FIG. 3, the greenhouse gas generation table may be a data set that measures greenhouse gas generation using two factors, engine RPM and engine load. Through the greenhouse gas generation table, for example, the greenhouse gas generation amount measured when the engine RPM is 50% and the engine load is 100, the greenhouse gas generation amount measured when the engine RPM is 50% and the engine load is 50, etc. Able to know.

Since it is impossible to create a table of greenhouse gas emissions for all agricultural vehicles due to the large amount of data, the representative engine RPM and representative engine load are specified based on the fact that fuel consumption is similar for each horsepower, and a greenhouse corresponding to the representative engine RPM and representative engine load is specified. A table was created by measuring the amount of gas generated. Referring to the greenhouse gas generation table shown in FIG. 3, it can be roughly seen that the greenhouse gas generation increases linearly as the representative engine RPM and representative engine load increase. However, it cannot be concluded that greenhouse gas emissions are necessarily high just because the engine RPM is high. In this embodiment, the greenhouse gas generation table listing the greenhouse gas generation amount corresponding to the representative engine RPM and representative engine load shown in FIG. 3 may also be stored in the external server 200.

FIG. 4 shows an example in which the processor 110 graphs the greenhouse gas generation table shown in FIG. 3 in a three-dimensional form. Referring to FIG. 4, the processor 110 uses the data stored in the greenhouse gas generation table shown in FIG. 3, using the X-axis as the representative engine RPM, the Y-axis as the representative engine load, and the Z-axis as the greenhouse gas generation amount. You can create a 3D graph. When generating a 3D graph, the processor 110 can process this 3D data set into continuous data through linear interpolation. Here, linear interpolation may include, for example, a technology that continuously processes between a discrete engine RPM 1100 section and an engine RPM 1200 section, and a known linear interpolation algorithm may be used. The three-dimensional graph generated by the processor 110 may also be stored in the memory 120.

Additionally, in this embodiment, detailed fault information corresponding to the fault code of the exhaust gas reduction device 140 may be stored in the memory 120. In another embodiment, detailed fault information corresponding to the fault code of the exhaust gas reduction device 140 may be stored in the external server 200.

In general, diesel engines installed in agricultural vehicles may generate more dust than gasoline engines during combustion. An exhaust gas reduction device 140 may be provided to filter dust from such diesel engines. The exhaust gas reduction device 140 may include selective catalytic reduction (SCR), exhaust gas recirculation (EGR), diesel particulate filter (DPF), etc.

If a failure occurs in the exhaust gas reduction device 140, dust filtering becomes impossible and the amount of exhaust gas, that is, greenhouse gas, increases. However, if the exhaust gas reduction device 140 breaks down, the operator is only informed of the simple fact that the engine has broken down. Accordingly, the worker cannot know what kind of failure has actually occurred in the exhaust gas reduction device 140 and how to repair it unless he or she visits a repair shop.

FIG. 5 shows detailed fault information corresponding to the fault code of the exhaust gas reduction device 140 stored in the memory 120. Referring to FIG. 5, for example, for the fault code <3241> of the exhaust gas reduction device 140, <SCR front end temperature sensor check> is provided as confirmation information to be checked by a mechanic at the repair shop, and is output to the worker. You can see that <Engine SCR upstream temperature overheating> is stored as detailed fault information. In addition, regarding the fault code <523719> of the exhaust gas reduction device 140, <SCR heater inspection> is the confirmation information to be checked by the mechanic at the repair shop, and <Engine urea number utility module heater> is the detailed fault information to be output to the worker. You can see that > is saved.

In this way, detailed fault information corresponding to the fault code of the exhaust gas reduction device 140 is stored in the memory 120, and when a fault occurs in the exhaust gas reduction device 140, a recognizeable fault code is stored in the memory 120. By informing the operator of detailed failure information, the operator can clearly recognize the failure of the specific exhaust gas reduction device 140.

In this embodiment, the memory 120 may include a magnetic storage medium or a flash storage medium, but the scope of the present invention is not limited thereto. Such memory 120 may include internal memory and/or external memory, such as volatile memory such as DRAM, SRAM, or SDRAM, OTPROM, PROM, EPROM, EEPROM, mask ROM, flash ROM, NAND flash memory, or NOR. It may include non-volatile memory such as flash memory, flash drives such as SSD, CF card, SD card, Micro-SD card, Mini-SD card, xD card, or memory stick, or storage devices such as HDD.

The display unit 130 is a monitor provided in the agricultural vehicle 100 and can output the status of the agricultural vehicle 100 so that the worker can view it. In this embodiment, the display unit 130 outputs, under the control of the processor 110, the amount of greenhouse gases generated corresponding to the engine RPM and engine load and/or whether or not greenhouse gases are generated depending on whether the exhaust gas reduction device 140 is malfunctioning. It can be.

The exhaust gas reduction device 140 may be provided to filter dust from a diesel engine installed in the agricultural vehicle 100, and may include an SCR, EGR, DPF, etc.

SCR may include a device that sprays an aqueous solution of ammonia (NH3) or urea (CH4N2O), called urea water, into the exhaust gas and converts it into water (H2O) and nitrogen (N2) through a catalytic reaction. This reduces not only nitrogen oxides (NOx) but also carbon monoxide, which is generated in large quantities from the engine, and is known to have a numerical reduction effect of about 65-85%. Since SCR does not inject additional fuel or create build-up through exhaust gas recirculation, it not only improves fuel efficiency but also keeps the engine interior clean for a long time.

EGR may include a reduction device that recirculates some of the exhaust gas burned in the engine back to the engine to lower the combustion chamber temperature, thereby suppressing nitrogen oxides. In other words, the principle is that when exhaust gases are recirculated, the combustion chamber temperature is lowered and nitrogen oxide (NOx) emissions are reduced in this process. Since nitrogen oxides (NOx) increase rapidly when the combustion temperature exceeds 2000°C, the maximum combustion temperature must be lowered to reduce nitrogen oxides (NOx). When a portion of the exhaust gas (about 15% of the mixture) is recirculated, inert gas (CO ₂ ) flows into the combustion chamber, lowering the combustion temperature during the explosion stroke (power stroke), thereby greatly reducing the amount of nitrogen oxides (NOx). .

DPF may include a reduction device that collects harmful substances such as hydrocarbon residues that occur when diesel does not burn properly, filters them out, and then burns them again at a high temperature of 550 degrees to reduce pollutants. In other words, it can be said to be an exhaust gas post-processing device (smoke reduction device) that collects PM, which is a fine soot particle, from the exhaust gas of agricultural vehicles (separates and collects trace components in the material) and then re-combusts them to remove them.

The communication network 150 may be an in-vehicle communication network that connects the processor 110, memory 120, display unit 130, and exhaust gas reduction device 140. In this embodiment, the communication network 150 may be a CAN (Control Area Network) communication network. If the communication network 150 is a CAN communication network, data can be transmitted and received by connecting multiple electronic control units in parallel. That is, the processor 110, memory 120, display unit 130, and exhaust gas reduction device 140 are connected to nodes of each CAN bus and can communicate with each other. In the above, the case where the communication network 150 is CAN has been described as an example, but the communication network 150 is not necessarily limited to this and a local interconnect network (LIN), FlexRay, Ethernet, etc. may be used without limitation.

Next, the operation of the processor 110 will be described in detail as follows. In this embodiment, the processor 110 may include a greenhouse gas estimation unit 111, an engine control unit 112, and a failure monitoring unit 113.

The greenhouse gas estimation unit 111 may collect engine status information from the engine control unit 112. The engine control unit 112 may calculate the engine RPM and engine load based on status information of the engine provided in the agricultural vehicle 100 and transmit them to the greenhouse gas estimation unit 111.

The engine control unit 112 may include an electronic control unit capable of electronically controlling the engine of the agricultural vehicle 100. The engine control unit 112 can collect information about the current state of the engine and control the operation of the engine in real time.

In more detail, the engine of the agricultural vehicle 100 controlled by the engine control unit 112 may be a direct fuel injection engine. This is so that the engine control unit 112 can control the engine more immediately, and an intake valve, an exhaust valve, an injector, a spark plug, a piston, a crankshaft, etc. may be provided inside the engine. The engine control unit 112 controls the air-fuel ratio (air and fuel mixture ratio), ignition timing, engine RPM limit setting (fuel cut), and timing of intake and exhaust valves in the process of generating power to move the agricultural vehicle 100. It can perform its function.

Relatedly, in order for the engine of the agricultural vehicle 100 to achieve maximum output, ignition must be performed when the piston is located at top dead center, but if the ignition timing is misaligned, fuel economy is reduced and engine output is reduced. In addition, unnatural vibration or 'knocking phenomenon' of the engine may occur.

Accordingly, in order to reduce the knocking phenomenon, the engine control unit 112 can use a sensor to determine when the piston reaches top dead center and collect engine RPM information. In addition, the engine control unit 112 sets the basic ignition timing as a data value based on the top dead center and RPM information, and can correct the ignition timing by recognizing unnatural vibration or noise that occurs when a knocking phenomenon occurs during combustion. . Based on the corrected ignition timing data, the engine control unit 112 sends an electrical signal to the spark plug, and the spark plug creates a spark in accordance with the electrical signal to combust.

Additionally, when the engine RPM is high, the engine consumes a lot of air, but because the engine rotates quickly, the intake valve closes quickly. As a result, incomplete combustion may occur due to insufficient air, and engine performance may deteriorate due to the generation of debris. On the other hand, when the engine RPM is low, the intake valve closes slowly because the engine rotation is slow, and fuel escapes before complete combustion, which can reduce engine output and increase emissions of harmful substances (e.g., CO ₂ ).

Accordingly, the engine control unit 112 can use a variable valve timing mechanism to change the timing of opening and closing the valve according to the current RPM of the engine. In other words, the engine control unit 112 can not only increase fuel efficiency and output at the same time by adjusting appropriate valve timing, but also reduce hazardous substance emissions.

The engine control unit 112 converts the engine state information obtained using the air-fuel ratio (air-to-fuel mixture ratio), ignition timing, engine RPM limit setting (fuel cut), and timing of intake and exhaust valves into physical RPM (rpm). RPM information can be calculated by converting into units, and engine load information can be calculated by converting the obtained engine state information into engine load units (%). The engine control unit 112 may transmit the calculated engine RPM and engine load to the greenhouse gas estimation unit 111.

When the greenhouse gas estimation unit 111 receives the engine RPM and engine load from the engine control unit 112, it may perform noise filtering on the engine RPM. In general, since the engine RPM is not a single value but continuously fluctuates, filtering processing can be performed to flatten the fluctuating engine RPM by calculating the average value over a preset time using a summation filter (not shown).

When the noise filtering process for the engine RPM is completed, the greenhouse gas estimation unit 111 may load a greenhouse gas generation table in which the greenhouse gas generation amount is constructed in response to the representative engine RPM and the representative engine load from the memory 120.

The greenhouse gas estimation unit 111 may extract the greenhouse gas generation amount corresponding to the engine RPM and engine load of the agricultural vehicle 100 from the greenhouse gas generation table. For example, if the engine RPM of the agricultural vehicle 100 is 1500 and the engine load is 60%, the greenhouse gas generation amount of 14.6755 kg/h can be extracted from the greenhouse gas generation table. Additionally, when the engine RPM of the agricultural vehicle 100 is 1630 and the engine load is 40%, the amount of greenhouse gas generation can be extracted from the linearly interpolated three-dimensional graph described above.

The greenhouse gas estimation unit 111 can output the extracted greenhouse gas generation so that the operator can view it. The greenhouse gas estimation unit 111 outputs the greenhouse gas generation amount to the display unit 130 provided in the agricultural vehicle, or outputs the greenhouse gas generation amount to the worker device 300 provided by the worker through the communication network 150 (CAN communication). Alternatively, the amount of greenhouse gas generation can be output together to the display unit 130 and the operator device 300.

After outputting the amount of greenhouse gases generated so that the worker can see them, the failure monitoring unit 113 can monitor the failure state of the exhaust gas reduction device 140 installed to reduce greenhouse gases emitted from the agricultural vehicle 100. .

In this embodiment, the engine control unit 112 may diagnose the failure state of the exhaust gas reduction device 140, generate a failure code when a failure occurs, and transmit it to the failure monitoring unit 113.

When receiving a fault code from the engine control unit 112, the fault monitoring unit 113 may extract detailed fault information corresponding to the fault code from the memory 120.

The failure monitoring unit 113 can output the extracted detailed failure information so that the operator can view it. The failure monitoring unit 113 outputs detailed failure information to the display unit 130 provided in the agricultural vehicle, or outputs detailed failure information to the operator device 300 provided by the operator through a communication network (150, CAN communication). , detailed failure information can be output together to the display unit 130 and the operator device 300.

FIG. 6 is a diagram illustrating an example of an agricultural vehicle that processes greenhouse gas generation notifications according to another embodiment. In the following description, parts that overlap with the description of FIGS. 1 to 5 will be omitted.

Referring to FIG. 6, the agricultural vehicle 100 that processes greenhouse gas generation notifications includes a processor 110, a memory 120, a display unit 130, an exhaust gas reduction device 140, a communication network 150, and a gateway. It may include (160). Since FIG. 6 is a modified example of FIG. 2, overlapping description will be omitted.

However, in the embodiment of FIG. 6, the greenhouse gas estimation unit 111 loads a greenhouse gas generation table listing the greenhouse gas generation amount corresponding to the representative engine RPM and representative engine load from the external server 200, or the failure monitoring unit ( 113) can connect to the external server 200 and extract detailed fault information corresponding to the fault code of the exhaust gas reduction device 140.

Next, the gateway 160 may include electronic devices that enable secure communication between electronic control units within the agricultural vehicle 100. In addition to the electronic control unit and in-vehicle communication network of the agricultural vehicle 100 illustrated in this embodiment, there are various electronic control units and communication networks in the agricultural vehicle 100. The gateway 160 may serve to interconnect and process data through safe and secure processing between various heterogeneous vehicle networks within the agricultural vehicle 100. In particular, as described above, when the greenhouse gas estimation unit 111 and the engine control unit 112, that is, the processor 110, is connected to an external communication network to communicate with the server 200, the gateway 160 is installed inside the vehicle. You can set up secure communication to protect your electronic devices.

FIG. 7(a) and FIG. 7(b) are diagrams for explaining an example of controlling an agricultural vehicle according to an embodiment. In the following description, parts that overlap with the description of FIGS. 1 to 6 will be omitted.

FIG. 7 (a) shows an example of the agricultural vehicle of FIG. 2 operating, and FIG. 7 (b) shows an example of the agricultural vehicle 100 of FIG. 6 in operation.

Referring to (a) of FIG. 7, the agricultural vehicle 100 can be driven and controlled by direct involvement of the operator. Specifically, after the worker boards the agricultural vehicle, the agricultural vehicle can be operated by directly adjusting the steering, acceleration, and deceleration devices included in the agricultural vehicle. Additionally, workers can perform agricultural work by directly loading work tools on a farming vehicle or connecting a work tool to a farming vehicle.

Referring to (b) of FIG. 7, the agricultural vehicle 100 can be operated and controlled even without a worker directly riding it. Specifically, the agricultural vehicle 100 may perform autonomous driving and autonomous work according to a control signal transmitted from the server 200 or the worker device 300.

For example, a controller capable of controlling a steering device, an acceleration device, and a deceleration device is installed in the agricultural vehicle 100, and the agricultural vehicle 100 can be operated according to a control signal input to the controller. In particular, the above-mentioned controller can be implemented universally, and as it is installed in the existing agricultural vehicle described above with reference to (a) of FIG. 7, autonomous driving and autonomous driving are possible without the separation or modification of elements included in the existing agricultural vehicle. Work can be done.

Figure 8 is a diagram for explaining examples of data obtained from an agricultural vehicle according to an embodiment. In the following description, parts that overlap with the description of FIGS. 1 to 7 will be omitted.

Referring to FIG. 8, the agricultural vehicle 100 may communicate with the worker device 300. Here, the worker device 300 may be replaced with the server 200 of FIG. 2 or a device of another subject 400. The worker device 300 may be any device capable of communicating with other devices, calculating or processing data, and storing data, without limitation. For example, the worker device 300 may include a smart phone 301, a tablet PC (302 in FIG. 5), a PC, a wearable device, etc., but is not limited thereto.

Depending on the operation of the agricultural vehicle 100 and agricultural work, various data may be generated. For example, as the agricultural vehicle 100 is produced, data about the agricultural vehicle 100 itself (e.g., model name, horsepower, release year, factory price, transmission type, appearance, specifications, etc.) can be created. In addition, as the agricultural vehicle 100 is driven, CAN (Controller Area Network) data, accident-related data, failure-related data, and other driving data (e.g., engine torque ratio, engine load ratio, engine RPM (Revolutions Per Minute), engine operation hour, accumulated fuel consumption, fuel efficiency, engine failure information, engine oil temperature, engine room temperature, coolant temperature, current gear shift, transmission oil temperature, mileage, driving time, etc.) can be created. Additionally, as agricultural work is performed with the agricultural vehicle 100, data related to agricultural equipment, data related to crops, data related to farmland where agricultural work is performed, etc. may be generated.

Data generated according to the operation of the agricultural vehicle 100 and agricultural work may be transmitted to one or more of the server 200, the worker device 300, and other entities 400. In addition, one or more of the server 200, the worker device 300, and the other subject 400 may output and store the transmitted data, and may process the transmitted data according to predetermined standards. Accordingly, various solutions related to the agricultural vehicle 100 may be provided to workers.

For example, through the worker device 300, the worker can perform management of agricultural work, maintenance of the agricultural vehicle 100, remote diagnosis of the agricultural vehicle 100, and management of fuel efficiency for the agricultural vehicle 100. You can.

As another example, through the worker device 300, the worker can track the current location of the agricultural vehicle 100 or monitor the current agricultural work of the agricultural vehicle 100. In addition, through the worker device 300, the worker can remotely start or turn off the engine of the agricultural vehicle 100 and turn on/off the air conditioning system of the agricultural vehicle 100.

As another example, through the worker device 300, the worker can prevent the theft of the agricultural vehicle 100 and can start or turn off the agricultural vehicle 100 without the key of the agricultural vehicle 100. Additionally, through the worker device 300, the worker can detect an accident of the agricultural vehicle 100 or report an emergency situation (for example, a worker's injury, a breakdown of the agricultural vehicle 100, etc.).

FIG. 9 is a diagram for explaining another example of controlling an agricultural vehicle according to an embodiment. In the following description, parts that overlap with the description of FIGS. 1 to 8 will be omitted.

Referring to FIG. 9 , the worker device 300 may output information about the current state of the agricultural vehicle 100 through communication with the agricultural vehicle 100. Here, worker device 300 may include tablet PC 302. For example, the worker device 300 may output information about the current location of the agricultural vehicle 100 obtained through a GPS signal. Additionally, the worker device 300 may output information about the size of the workplace where the agricultural vehicle 100 will work through a GPS signal. Additionally, when the agricultural vehicle 100 is currently driving, the worker device 300 may output information about the engine RPM, current speed, fuel efficiency, operating time, current gear shift, etc. of the agricultural vehicle 100.

Accordingly, the worker can determine the current state of the agricultural vehicle 100 and remotely control the agricultural vehicle 100 through the worker device 300. In other words, the worker checks the information output to the worker device 300 without boarding the agricultural vehicle 100 and controls various functions of the agricultural vehicle 100 through the worker device 300, thereby performing autonomous driving and/or Autonomous operations can be implemented.

Figure 10 is a flowchart illustrating a method for notifying greenhouse gas emissions from agricultural vehicles according to an embodiment. In the following description, parts that overlap with the description of FIGS. 1 to 9 will be omitted. The method for notifying the greenhouse gas generation of an agricultural vehicle according to this embodiment will be described assuming that the agricultural vehicle 100 is performed by the processor 110 with the help of peripheral components.

Referring to FIG. 10 , in step S1010, the processor 110 may calculate the engine RPM and engine load based on status information of the engine provided in the agricultural vehicle 100.

In step S1020, the processor 110 can load a greenhouse gas generation table in which the greenhouse gas generation amount is constructed corresponding to the representative engine RPM and representative engine load as a result of testing a plurality of agricultural vehicles from the memory 120. there is. In this embodiment, after loading the greenhouse gas generation table, the processor 110 linearly interpolates a three-dimensional data set with the X-axis as the representative engine RPM, the Y-axis as the representative engine load, and the Z-axis as the greenhouse gas generation amount. It can be processed into continuous data.

In step S1030, the processor 110 may extract the greenhouse gas generation amount corresponding to the engine RPM and engine load calculated based on status information of the engine installed in the agricultural vehicle from the greenhouse gas generation table. In this embodiment, the processor 110 calculates the greenhouse gases corresponding to the engine RPM and engine load calculated based on the status information of the engine provided in the agricultural vehicle from the greenhouse gas generation table processed into continuous data through linear interpolation. The amount generated can be extracted.

In step S1040, the processor 110 may output the greenhouse gas generation amount corresponding to the engine RPM and engine load so that workers working with the agricultural vehicle 100 can view it. In this embodiment, the processor 110 outputs the amount of greenhouse gas generation to the display unit 130 provided in the agricultural vehicle 100, or outputs the amount of greenhouse gas generation to the operator device 300 provided by the worker through CAN communication. Alternatively, the amount of greenhouse gas generation can be output together to the display unit 130 and the operator device 300.

In step S1050, the processor 110 may monitor the failure state of the exhaust gas reduction device 140 installed to reduce greenhouse gases emitted from the agricultural vehicle 100. Whether the exhaust gas reduction device 140 is in a malfunction state may be monitored by the engine control unit 112.

In steps S1060 and S1070, the processor 110 may receive a fault code corresponding to the failure state of the exhaust gas reduction device 140 as a failure occurs in the exhaust gas reduction device.

In step S1080, the processor 110 may extract detailed fault information corresponding to the fault code from the memory 120.

In step S1090, the processor 110 may output detailed failure information so that a worker driving an agricultural vehicle can view it. In this embodiment, the processor 110 outputs detailed failure information to the display unit 130 provided in the agricultural vehicle 100, or outputs detailed failure information to the operator device 300 provided by the worker through CAN communication. Alternatively, detailed failure information can be output together to the display unit 130 and the operator device 300.

Embodiments according to the present invention described above may be implemented in the form of a computer program that can be executed through various components on a computer, and such a computer program may be recorded on a computer-readable medium. At this time, the media includes magnetic media such as hard disks, floppy disks, and magnetic tapes, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, and ROM. , RAM, flash memory, etc., may include hardware devices specifically configured to store and execute program instructions.

Meanwhile, the computer program may be designed and configured specifically for the present invention, or may be known and available to those skilled in the art of computer software. Examples of computer programs may include not only machine language code such as that created by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.

In the specification (particularly in the claims) of the present invention, the use of the term “above” and similar referential terms may refer to both the singular and the plural. In addition, when a range is described in the present invention, it includes the invention to which individual values within the range are applied (unless there is a statement to the contrary), and each individual value constituting the range is described in the detailed description of the invention. It's the same.

Unless there is an explicit order or statement to the contrary regarding the steps constituting the method according to the invention, the steps may be performed in any suitable order. The present invention is not necessarily limited by the order of description of the above steps. The use of any examples or illustrative terms (e.g., etc.) in the present invention is merely to describe the present invention in detail, and unless limited by the claims, the scope of the present invention is limited by the examples or illustrative terms. It doesn't work. Additionally, those skilled in the art will recognize that various modifications, combinations and changes may be made depending on design conditions and factors within the scope of the appended claims or their equivalents.

Therefore, the spirit of the present invention should not be limited to the above-described embodiments, and the scope of the patent claims described below as well as all scopes equivalent to or equivalently changed from the scope of the claims are within the scope of the spirit of the present invention. It will be said to belong to

100: Farming vehicle
110: processor
111: Greenhouse gas estimation unit
112: Engine control unit
113: Fault monitoring unit
120: memory
130: display unit
140: Exhaust gas reduction device

Claims (8)

A greenhouse gas generation notification method performed by a processor of a greenhouse gas generation notification device of an agricultural vehicle, comprising:
calculating engine RPM and engine load based on status information of the engine provided in the agricultural vehicle;
Loading a greenhouse gas generation table in which greenhouse gas generation amounts are constructed in response to representative engine RPM and representative engine load as a result of testing a plurality of agricultural vehicles from memory;
extracting, from the greenhouse gas generation table, a greenhouse gas generation amount corresponding to the engine RPM and engine load calculated based on status information of an engine provided in the agricultural vehicle; and
Including the step of outputting the amount of greenhouse gases generated corresponding to the engine RPM and engine load so that workers working using the agricultural vehicle can see it,
How to notify greenhouse gas emissions from agricultural vehicles. According to claim 1,
After the step of loading the greenhouse gas generation table,
Further comprising processing a three-dimensional data set with the X-axis as the representative engine RPM, the Y-axis as the representative engine load, and the Z-axis as the greenhouse gas generation amount into continuous data through linear interpolation,
The step of extracting the amount of greenhouse gases generated is,
From the greenhouse gas generation table processed into continuous data through the linear interpolation, extracting the greenhouse gas generation amount corresponding to the engine RPM and engine load calculated based on status information of the engine provided in the agricultural vehicle. doing,
How to notify greenhouse gas emissions from agricultural vehicles. According to claim 1,
The step of outputting the amount of greenhouse gases generated is,
The greenhouse gas generation amount is output to a display unit provided in the agricultural vehicle, the greenhouse gas generation amount is output to a worker device provided by the worker through CAN communication, or the greenhouse gas generation amount is output to the display unit and the worker device. Including the step of outputting together,
How to notify greenhouse gas emissions from agricultural vehicles. According to claim 1,
After the step of outputting the greenhouse gas generation amount,
Monitoring a failure state of an exhaust gas reduction device installed to reduce greenhouse gases emitted from the agricultural vehicle; and
When a failure occurs in the exhaust gas reduction device, the step of outputting the failure state of the exhaust gas reduction device so that a worker working using the agricultural vehicle can view it,
How to notify greenhouse gas emissions from agricultural vehicles. According to claim 4,
The step of printing so that workers working using the agricultural vehicle can see it,
Receiving a fault code indicating a fault state of the exhaust gas reduction device;
extracting detailed fault information corresponding to the fault code from the memory; and
Including the step of outputting the detailed failure information so that workers working using the agricultural vehicle can view it,
How to notify greenhouse gas emissions from agricultural vehicles. According to claim 5,
The step of printing so that workers working using the agricultural vehicle can see it,
The detailed failure information is output to a display unit provided in the agricultural vehicle, the detailed failure information is output to a worker device provided by the worker through CAN communication, or the detailed failure information is output to the display unit and the worker device. Including the step of outputting together,
How to notify greenhouse gas emissions from agricultural vehicles. A computer-readable recording medium storing a computer program for executing the method of any one of claims 1 to 6 using a computer. As a greenhouse gas generation notification device for agricultural vehicles,
processor; and
a memory operably connected to the processor and storing at least one code to be executed by the processor;
When the memory is executed through the processor, the processor calculates engine RPM and engine load based on status information of an engine provided in the agricultural vehicle,
Loading a greenhouse gas generation table in which greenhouse gas generation amounts are constructed in response to representative engine RPM and representative engine load as a result of testing a plurality of agricultural vehicles from the memory,
From the greenhouse gas generation table, extract the greenhouse gas generation amount corresponding to the engine RPM and engine load calculated based on status information of the engine provided in the agricultural vehicle,
Storing a code that causes the greenhouse gas generation amount corresponding to the engine RPM and engine load to be output so that a worker working using the agricultural vehicle can view it,
A greenhouse gas emission notification device for agricultural vehicles.

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