Cab temperature control method, arrangement and working machine

Abstract

The application provides a cab temperature control method, device and working machine, and belongs to the technical field of working machines. The method comprises the following steps: receiving a temperature control instruction; the temperature control instruction carries a set temperature expected value; in response to the temperature control instruction, a plurality of temperature values are obtained; the plurality of temperature values are used to represent temperatures corresponding to different positions of the cab of the working machine; based on the plurality of temperature values, an initial temperature value corresponding to the cab is determined; and based on the initial temperature value and the set temperature expected value, the working state of an air conditioning system of the working machine is adjusted. The application is used to solve the problem of insufficient control precision of the temperature control system of the cab of the super-large working machine.

Description

Technical Field

[0001] This invention relates to the field of operating machinery technology, specifically to a cab temperature control method, a cab temperature control device, an operating machine, a machine-readable storage medium, and a computer program product. Background Technology

[0002] Heavy machinery (such as extra-large excavators) is widely used in harsh working environments such as mining and large-scale infrastructure construction. In actual operation, the temperature of the cab of extra-large machinery is affected by various factors, including ambient temperature, solar radiation, and heat generated by the equipment. High temperatures not only cause discomfort to the operator, affecting work efficiency and operational accuracy, but prolonged exposure can also harm the operator's health. Conversely, in cold environments, excessively low temperatures can also impair the operator's dexterity and reaction speed.

[0003] Currently, the upper cabin of the cab can meet the needs of cooling and heating, but the temperature control system of the cab of ultra-large operating machinery has the problem of insufficient control accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a cab temperature control method, a cab temperature control device, a type of work machinery, a machine-readable storage medium, and a computer program product to solve the problem of insufficient control accuracy in the current temperature control system for the cab of ultra-large work machinery.

[0005] To achieve the above objectives, embodiments of the present invention provide a cab temperature control method, comprising: Receive a temperature control command; the temperature control command carries a set desired temperature value. In response to the temperature control command, multiple temperature values ​​are acquired; the multiple temperature values ​​are used to characterize the temperature at different locations in the cab of the operating machinery. Based on the multiple temperature values, the initial temperature value corresponding to the cab is determined; Based on the initial temperature value and the set desired temperature value, adjust the working status of the air conditioning system of the operating machinery.

[0006] On the other hand, embodiments of the present invention also provide a cab temperature control device, comprising: A receiving module is used to receive temperature control commands; the temperature control commands carry a set desired temperature value. The first acquisition module is used to acquire multiple temperature values ​​in response to the temperature control command; the multiple temperature values ​​are used to characterize the temperature corresponding to different positions in the cab of the operating machinery. The first determining module is used to determine the initial temperature value corresponding to the cab based on the plurality of temperature values; The temperature control module is used to adjust the working status of the air conditioning system of the operating machinery based on the initial temperature value and the set temperature expectation value.

[0007] On the other hand, embodiments of the present invention also provide a working machine, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the above-described cab temperature control method.

[0008] On the other hand, the present invention also provides a machine-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described cab temperature control method.

[0009] On the other hand, the present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described cab temperature control method.

[0010] Through the above technical solution, the embodiments of the present invention adjust the working state of the air conditioning system inside the operating machinery based on an initial temperature value calculated from multiple temperature values ​​and a set desired temperature value to achieve cab temperature control. The embodiments of the present invention improve the accuracy of cab temperature control.

[0011] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a flowchart illustrating the cab temperature control method provided by the present invention; Figure 2 This is a schematic diagram of the cab temperature control device provided by the present invention; Figure 3 This is one of the structural schematic diagrams of the operating machinery provided by the present invention; Figure 4 This is the second structural schematic diagram of the operating machinery provided by the present invention; Figure 5 This is a schematic diagram of the air conditioner in the operating machinery provided by the present invention; Figure 6 This is one of the flowcharts illustrating the cab temperature control process of the operating machinery provided by the present invention; Figure 7This is the second schematic diagram of the process for controlling the cab temperature of the operating machinery provided by the present invention. Detailed Implementation

[0013] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0014] Please refer to Figure 1 This invention provides a method for controlling cab temperature, comprising: Step 110: Receive temperature control command.

[0015] Step 120: In response to the temperature control command, acquire multiple temperature values.

[0016] This invention relates to a cab temperature control method applied to construction machinery. The construction machinery can be various types of ultra-large construction machinery, such as ultra-large excavators, cranes, bulldozers, etc. In this invention embodiment, an ultra-large excavator (hereinafter referred to as an excavator) is used as an example for illustration, and this invention embodiment can be a method for controlling the temperature inside the excavator's cab.

[0017] In one embodiment, the excavator operator can set a desired temperature value via an input device (e.g., a human-machine interface), generating a temperature control command carrying that desired value. The excavator's processor (or controller) responds to the temperature control command by first acquiring multiple temperature values ​​from the excavator cab. These multiple temperature values ​​characterize the temperature at different locations within the excavator cab. These multiple temperature values ​​can be collected by a group of temperature sensors distributed across various key locations in the upper compartment of the excavator cab. The temperature sensor group can include two, three, or more temperature sensors. For example, in one embodiment, three temperature sensors can be used, respectively installed at the bottom of the main driver's seat, the bottom of the passenger seat, and inside the left control panel, to monitor the temperature at various locations in the upper compartment of the excavator cab in real time.

[0018] Step 130: Based on the multiple temperature values, determine the initial temperature value corresponding to the cab.

[0019] The excavator's processor determines the initial temperature value corresponding to the cab based on the multiple temperature values. The initial temperature value can be determined using any calculation method among the average, weighted sum, and weighted average of the multiple temperature values. In one embodiment, for example, there are three temperature values ​​T1, T2, and T3. The excavator's processor can calculate the average of T1, T2, and T3. The initial internal temperature value is obtained. In another embodiment, the excavator's processor can also calculate a weighted sum of T1, T2, and T3. The initial internal temperature value is obtained. In another embodiment, the excavator's processor can also calculate a weighted average of T1, T2, and T3. The initial internal temperature value is obtained. The weights a1, a2, and a3 of T1, T2, and T3 can be set according to actual needs.

[0020] This invention determines the initial temperature value of the cab based on multiple temperature values. The initial temperature value calculated by combining temperature values ​​from different locations helps improve the accuracy of temperature detection in the excavator cab.

[0021] Step 140: Based on the initial temperature value and the set desired temperature value, adjust the working status of the air conditioning system of the operating machinery.

[0022] The number of air conditioners in the air conditioning system of this invention can be set according to actual needs, for example, it can be set to 2, 3, or more. In one embodiment, the air conditioner's operation and airflow are controlled through the air conditioning settings interface on the excavator's display screen, while the excavator's display screen shows the temperature of the upper cab in real time. Each air conditioner includes a compressor clutch, condenser, evaporator, air conditioning pipes (or air ducts), etc. The compressor clutch compresses air under the drive of a hydraulic motor. The hydraulic motor is driven by a hydraulic pump, which is driven by a transfer case, the power of which comes from the engine. The condenser's main function is to dissipate the heat in the refrigerant to the surrounding environment. The evaporator changes the refrigerant from liquid to gas, absorbing heat. The air duct is divided into an intake air duct and a return air duct. The intake air duct delivers the treated air to the upper cab, while the used air is discharged through the return air duct. This airflow process ensures that the air pressure in the upper cab does not increase.

[0023] It should be noted that the air conditioning in this embodiment of the invention can cool according to the conventional cooling principle of air conditioning. Heating the excavator cab uses the excavator engine cooling water to heat the air, and then the heated air is blown into the upper compartment of the cab through the air conditioning intake duct, while cold air is drawn out from the return air duct. Since the excavator needs to operate in an environment of -40 degrees Celsius, heating the excavator cab with cooling water is insufficient to achieve the required temperature. Therefore, to accelerate temperature control adjustment, an external heating device can be used to heat the upper compartment of the excavator cab to achieve the required temperature. This heating device can be a boiler heating system, an electric hot air blower, etc. In this embodiment of the invention, a boiler heating system is used as an example for explanation.

[0024] The boiler heating system heats the air in the excavator cab by burning diesel fuel during low-temperature construction. While the excavator is in operation, the engine coolant heats the air, which is then circulated through the air conditioning ducts to the upper cab compartment. However, in winter, if the coolant-heated air is insufficient to quickly raise the temperature of the upper cab compartment before or while the excavator is in operation, the boiler heating system can be activated. The boiler heating system is controlled via a controller while the excavator is in operation, and settings are displayed on the screen while the excavator is parked.

[0025] In one embodiment, the operating status of multiple air conditioners inside the machine is determined based on the deviation between the initial temperature value and the desired set temperature value, thereby achieving temperature control in the cab. In another embodiment, the excavator controller may employ a fuzzy adaptive control algorithm. Based on the deviation between the initial temperature value collected by the temperature sensor and the desired set temperature value, the excavator controller dynamically adjusts the operating status of the air conditioners and insulation devices using fuzzy inference rules. When the temperature deviation is large, the cooling or heating power is increased, while ventilation and insulation measures are enhanced; when the temperature approaches the set value, the air conditioner operating power is gradually reduced, achieving precise and energy-efficient temperature control.

[0026] Therefore, this invention adjusts the operating state of the air conditioning system inside the machinery based on an initial temperature value calculated from multiple temperature values ​​and a set desired temperature value to achieve cab temperature control. This invention improves the accuracy of cab temperature control.

[0027] In other aspects of this embodiment of the invention, after step 130, the method further includes: acquiring the ambient temperature value outside the cab and the light intensity corresponding to the cab. If the ambient temperature value is greater than or equal to a fourth preset temperature threshold, and the light intensity is greater than or equal to a preset light intensity threshold, the heat insulation device of the operating machinery is determined to be in an on / off state. If the ambient temperature value is less than a fifth preset temperature threshold, and the light intensity is greater than or equal to a preset light intensity threshold, the heat insulation device of the operating machinery is determined to be in a off / closed state.

[0028] In one embodiment, the ambient temperature value can be collected by an ambient temperature sensor installed on the excavator's turntable. The ambient temperature sensor can detect the ambient temperature outside the excavator in real time. The light intensity shining on the machine can be collected by a sunlight sensor. In one embodiment, the sunlight sensor can be installed at the front of the left control panel in the upper cab of the excavator to detect the light intensity in the upper cab of the excavator.

[0029] The heat insulation device can be installed on the left and right sides of the upper compartment of the excavator cab. The heat insulation device can use curtains (in some embodiments, motorized curtains). During hot seasons, the curtains are opened when the sunlight is strong to reduce the impact of solar radiation on the temperature inside the excavator cab; conversely, when the temperature inside the upper compartment of the excavator cab is low and needs to be increased, the curtains are opened to increase the intensity of sunlight.

[0030] In one embodiment, the fourth set temperature threshold can be 25°C. The set light intensity threshold can be 1000 lm. When the ambient temperature is greater than or equal to 25°C and the light intensity inside the excavator is greater than or equal to 1000 lm, the excavator's heat insulation device is determined to be in the open heat insulation state. That is, during the hot season, the curtains are closed when the sunlight is strong to reduce the impact of solar radiation on the temperature inside the excavator's cabin. Specifically, when the ambient temperature is greater than or equal to 25°C and the light intensity inside the excavator is greater than or equal to 1000 lm, the curtains are determined to be in the open heat insulation state, and the excavator's controller sends a command to the display screen, which reminds the excavator operator to close the curtains. Alternatively, when the heat insulation device uses electric curtains, the excavator's controller sends a command to the electric curtains to control them to close.

[0031] In one embodiment, the fourth set temperature threshold is greater than the fifth set temperature threshold, which can be 15°C. The set light intensity threshold can be 1000 lm. When the ambient temperature is less than 15°C and the light intensity inside the excavator is greater than or equal to 1000 lm, the excavator's heat insulation device is determined to be in a closed state. That is, during the low-temperature season, when it is necessary to increase the temperature inside the excavator's cab, the curtains are opened to increase the light intensity. Specifically, when the ambient temperature inside the excavator is less than 15°C and the light intensity inside the excavator is greater than or equal to 1000 lm, the excavator's controller sends a command to the display screen to remind the excavator operator to open the curtains. Alternatively, when the heat insulation device uses electric curtains, the excavator's controller sends a command to the electric curtains to control their opening.

[0032] Therefore, this embodiment of the invention improves the response speed of cab temperature control by integrating multiple sensor data, including the ambient temperature outside the excavator cab and the light intensity inside the cab, to control the opening and closing state of the heat insulation device.

[0033] In other aspects of the embodiments of the present invention, step 140, adjusting the operating state of the air conditioning system of the working machinery based on the initial temperature value and the set desired temperature value, includes: Step 141: When the desired set temperature value is less than the initial temperature value and the desired set temperature value is greater than or equal to the second set temperature threshold, control multiple air conditioners to perform cooling at the first set power respectively.

[0034] It should be noted that the embodiments of the present invention include multiple air conditioning cooling control processes and heating control processes. When the desired set temperature is less than the initial temperature and greater than or equal to a second set temperature threshold, the system is in the cooling control process. Therefore, the excavator controller controls multiple air conditioners to perform cooling at a first set power. The first set power can be the rated power of the air conditioner. The second set temperature threshold can be 15°C.

[0035] Step 142: During the process of controlling the multiple air conditioners to perform cooling at the first set power, the actual temperature value corresponding to the cab is determined in real time.

[0036] Since multiple air conditioners are controlled to perform cooling at a first set power after the initial temperature value is reached, this embodiment of the invention needs to determine the actual temperature value corresponding to the cab in real time during the cooling process of the multiple air conditioners performing cooling at the first set power. The calculation method for the actual temperature value can refer to the initial temperature value, and is obtained by calculating multiple temperature values ​​at different locations within the cab. The specific calculation method is the same as that for the initial temperature value, and will not be elaborated here.

[0037] Step 143: Based on the deviation between the actual temperature value and the set expected temperature value, determine the cooling status of the multiple air conditioners of the operating machinery to achieve cooling control of the cab.

[0038] When the actual temperature value in the upper compartment of the excavator cab continuously approaches the set temperature expectation value (when the deviation between the actual temperature value and the set temperature expectation value is close to 0), the excavator controller outputs a command to gradually turn off the number of air conditioners, so that the entire upper compartment of the excavator cab reaches a dynamic balance.

[0039] In one embodiment, step 143, determining the cooling status of the plurality of air conditioners of the operating machinery based on the deviation between the actual temperature value and the set temperature expectation value, in order to achieve cooling control of the cab, includes: as the deviation between the actual temperature value and the set temperature expectation value gradually decreases, controlling the plurality of air conditioners of the operating machinery to stop cooling one by one until the deviation between the actual temperature value and the set temperature expectation value is less than a set deviation threshold, at which point all air conditioners stop cooling.

[0040] For example, there are two air conditioners. When the condition that the expected set temperature is less than the actual temperature (T4) and the expected set temperature (T6) is greater than or equal to the second set temperature threshold is met, the excavator controller controls both air conditioners to simultaneously achieve cooling at their rated power. Under the premise that the expected set temperature is less than the actual temperature and the expected set temperature is greater than or equal to the second set temperature threshold, the deviation ΔT between the actual temperature and the expected set temperature is calculated as ΔT = T4 - T6. When the deviation ΔT is within the range of (1℃, 2℃), the excavator controller controls the air conditioner 1 to be turned off; when the deviation ΔT is within the range of (0℃, 1℃), the excavator controller controls the air conditioner 1 and air conditioner 2 to be turned off.

[0041] In another embodiment, controlling the multiple air conditioners of the operating machinery to stop cooling one by one also includes controlling the air conditioners to operate at a set ratio (e.g., 0.5) of their rated power. For example, there are two air conditioners. When the condition that the expected set temperature is less than the actual temperature (T4) and the expected set temperature (T6) is greater than or equal to a second set temperature threshold is met, the excavator controller controls the two air conditioners to simultaneously achieve cooling at their rated power through calculation. Under the premise that the expected set temperature is less than the actual temperature and the expected set temperature is greater than or equal to the second set temperature threshold, the deviation ΔT between the actual temperature and the expected set temperature is calculated as ΔT = T4 - T6. When the deviation ΔT is within the range of (0.5℃, 1℃), the excavator controller controls the air conditioner 1 to be turned off; when the deviation ΔT is within the range of (0℃, 0.5℃), the excavator controller controls the air conditioner 1 to be turned off and controls the air conditioner 2 to operate at half of its rated power; when the deviation ΔT is less than 0, the excavator controller controls the air conditioners 1 and 2 to be turned off.

[0042] Therefore, this embodiment of the invention, through the fusion of multiple temperature sensors and advanced control algorithms, controls the cooling status of two air conditioners to achieve cooling control of the operating machinery. This allows for precise control of the excavator cab's upper compartment temperature within a set range, with temperature fluctuations less than ±1℃, significantly improving driver comfort. A comfortable temperature environment helps the driver maintain a good working condition, reduces operational errors caused by temperature discomfort, and improves excavator operating efficiency and safety.

[0043] In other aspects of the embodiments of the present invention, the multiple air conditioners include three air conditioners. The three air conditioners include a first air conditioner (Air conditioner 1), a second air conditioner (Air conditioner 2), and a third air conditioner (Air conditioner 3). Step 143, based on the deviation between the actual temperature value and the set temperature desired value, determining the refrigeration states of the multiple air conditioners of the working machine to achieve the refrigeration control of the cab, includes: when the deviation between the actual temperature value and the set temperature desired value is within the first set threshold range, controlling any one of the three air conditioners to stop refrigerating; when the deviation between the actual temperature value and the set temperature desired value is within the second set threshold range, controlling any two of the three air conditioners to stop refrigerating; when the deviation between the actual temperature value and the set temperature desired value is within the third set threshold range, controlling any two of the three air conditioners to stop refrigerating, and controlling the air conditioner other than the any two air conditioners to perform refrigeration at the first adjustment power; when the deviation between the actual temperature value and the set temperature desired value is less than the first set deviation threshold, controlling the three air conditioners to stop refrigerating respectively.

[0044] The first adjustment power is calculated based on the first set power and the first set ratio; the minimum value in the first set threshold range is greater than the maximum value in the second set threshold range; the minimum value in the second set threshold range is greater than the maximum value in the third set threshold range; the first set deviation threshold is less than the minimum value in the third set threshold range.

[0045] In the embodiments of the present invention, the set temperature desired value is the T6 value, and the actual temperature value is T4. When the condition 15°C ≤ T6 < T4 is satisfied, the excavator controller controls the 3 air conditioner controllers through operation. The 3 air conditioner controllers control the 3 air conditioners to simultaneously perform refrigeration at the rated power. On the premise of satisfying 15°C ≤ T6 < T4, calculate the deviation △T = T4 - T6 between the actual temperature value and the set temperature desired value. When △T is within the range of (1°C, 2°C] (the first set threshold range), calculate to turn off Air conditioner 1 through the excavator controller; when △T is within the range of (0.5°C, 1°C] (the second set threshold range), calculate to turn off Air conditioner 1 and turn off Air conditioner 2 simultaneously through the controller; when △T is within the range of (0, 0.5°C] (the third set threshold range), calculate to turn off Air conditioner 1 and turn off Air conditioner 2 simultaneously, and control Air conditioner 3 to work at 0.5 times (the first set ratio) of the rated power. When △T is less than 0 (the first set deviation threshold), the controller outputs a result to turn off the 3 air conditioners.

[0046] The control method described above, which determines the cooling status of multiple air conditioners in the working machinery based on the deviation between the actual temperature value and the set expected temperature value, can be encapsulated in the excavator controller's compilation platform. That is, it is a function module, which can be directly called during program writing to achieve internal temperature control of the excavator. Therefore, this embodiment of the invention, through the fusion of multiple temperature sensors and advanced control algorithms, controls the cooling status of three air conditioners to achieve internal cooling control of the working machinery. This further enables precise control of the excavator cab's upper compartment temperature within the set range, with temperature fluctuations less than ±1℃, significantly improving driver comfort.

[0047] In other aspects of this invention, step 140, determining the operating status of multiple air conditioners inside the machinery based on the deviation between the actual temperature value and the set desired temperature value, to achieve temperature control of the cab, includes: Step 144: When the desired set temperature value is greater than the initial temperature value and the desired set temperature value is less than the second set temperature threshold, control multiple air conditioners to perform heating at the second set power respectively.

[0048] The heating control process of multiple air conditioners according to the present invention is described below. When the desired set temperature is greater than the actual temperature and less than a second set temperature threshold, the heating control process is in progress. Therefore, the excavator controller controls multiple air conditioners to perform heating at a second set power. The second set power can be the rated power of the air conditioner. The second set temperature threshold can be 15°C.

[0049] Step 145: When multiple air conditioners are controlled to heat at the second set power and the heating time reaches the set time, the actual temperature value corresponding to the cab is determined in real time.

[0050] Since multiple air conditioners are controlled to heat at a second set power after the initial temperature value is reached, and the heating time reaches the set timing period, this embodiment of the invention needs to determine the actual temperature value corresponding to the cab in real time during the process of multiple air conditioners heating at the second set power. The calculation method for the actual temperature value can refer to the initial temperature value, and is obtained by calculating multiple temperature values ​​at different locations within the cab. The specific calculation method is the same as that for the initial temperature value, and will not be elaborated here.

[0051] Step 146: Based on the deviation between the set temperature expectation value and the actual temperature value, determine the heating status of multiple air conditioners of the operating machinery to achieve heating control of the cab.

[0052] When the actual temperature value in the upper compartment of the excavator cab continuously approaches the set temperature expectation value (when the deviation between the actual temperature value and the set temperature expectation value is close to 0), the excavator controller outputs a command to gradually turn off the number of air conditioners, so that the entire upper compartment of the excavator cab reaches a dynamic balance.

[0053] In one embodiment, step 146, determining the heating status of multiple air conditioners on the operating machinery based on the deviation between the set desired temperature value and the actual temperature value, to achieve heating control of the cab, includes: Step 1461: Determine the comparison result between the actual temperature value and the third set temperature threshold; the third set temperature threshold is less than the expected set temperature value; Step 1462: When the actual temperature value is greater than or equal to the third set temperature threshold, the heating status of multiple air conditioners of the operating machinery is determined based on the deviation between the set temperature expectation value and the actual temperature value, so as to realize the heating control of the cab.

[0054] Step 1463: When the actual temperature value is less than the third set temperature threshold, control the heating device to start heating, and based on the deviation between the set temperature expectation value and the actual temperature value, determine the heating status of the heating device and the multiple air conditioners of the working machinery, so as to realize the heating control of the cab.

[0055] When the ambient temperature is not too low, for example, above 8°C, the heating of multiple air conditioners is sufficient to control the heating of the cab. However, when the ambient temperature is low, and the heating of multiple air conditioners fails to raise the temperature to the desired temperature (e.g., 8°C) after a set calculation time, the heating effect of the engine coolant is limited, thus failing to meet the cab's heat requirements. Therefore, a cab boiler heating system is needed, meaning the boiler heating system and multiple air conditioners need to work together to achieve heating control of the cab. Therefore, this embodiment of the invention adds a comparison process between the actual temperature value and a third set temperature threshold, for example, set to 8°C. The excavator controller has a set timer; if the heat requirement (8°C) is not reached within 5 minutes, the boiler heating system is activated. The cab boiler heating system is installed in the upper compartment of the excavator cab, using the heat generated by burning diesel fuel to directly heat the air in the upper compartment of the excavator cab, and then blowing the heated air into the upper compartment to heat it further. After the boiler heating system is activated, the fans of the three air conditioners operate simultaneously at their rated power. If the heat demand (8°C) is reached within 5 minutes, only the fans of 3 air conditioners will be controlled to work at their rated power simultaneously.

[0056] For example, in one embodiment, there are two air conditioners (air conditioner 1 and air conditioner 2). During the heating process of the upper cab of the excavator, after the engine is started, the heated cooling water is led to the air conditioner evaporator to heat the air around the water pipe. The air conditioner fan blows the heated air through the air duct to the upper cab to heat the upper cab. When the deviation between the actual temperature value (T4) and the set expected temperature value (T6) is ΔT = |T4 - T6| = T6 - T4 > 2, the excavator controller controls the fans of both air conditioners to operate at their rated power. When ΔT = T6 - T4 is within the range of (1℃, 2℃), the excavator controller controls the fan of air conditioner 1 to be turned off, and the fan of air conditioner 2 operates at its rated power. When ΔT = T6 - T4 is within the range of (0.5℃, 1℃), the excavator controller controls the fan of air conditioner 1 to be turned off, and the fan of air conditioner 2 operates at half its rated power for heating. When ΔT = T6 - T4 is within the range of (0℃, 0.5℃), only the fan of air conditioner 2 operates at one-third of its rated power for heating. When ΔT = T6 - T4 is less than 0℃, the excavator controller outputs a control to stop the fans of both air conditioners from operating.

[0057] Therefore, this embodiment of the invention controls the heating status of two air conditioners by fusing multiple temperature sensors and using advanced control algorithms to achieve heating control of the cab. This allows the temperature of the upper compartment of the excavator cab to be precisely controlled within a set range, with temperature fluctuations of less than ±1℃, significantly improving the driver's comfort.

[0058] In another embodiment, two air conditioners (Air Conditioner 1 and Air Conditioner 2) are also present. During the heating process of the upper cab of the excavator, after the engine starts, heated cooling water is led to the air conditioner evaporator to heat the air around the water pipe. The air conditioner fan blows the heated air through the air duct to the upper cab to heat the upper cab. When the deviation between the actual temperature value (T4) and the set expected temperature value (T6) is ΔT = |T4 - T6| = T6 - T4 > 2, the controller controls the fans of both air conditioners to operate at their rated power, and the excavator controller controls the boiler heat collection system to operate at its rated power. When ΔT = T6 - T4 is within the range of (1℃, 2℃), the excavator controller controls the fan of Air Conditioner 1 to be turned off, the fan of Air Conditioner 2 to operate at its rated power, and the excavator controller controls the boiler heating system to operate at half of its rated power. When ΔT = T6 - T4 is within the range of (1℃, 2℃), the excavator controller controls the fan of Air Conditioner 1 to be turned off, the fan of Air Conditioner 2 to operate at its rated power, and the excavator controller controls the boiler heating system to operate at half of its rated power. When ΔT = T6 - T4 is within the range of (0.5℃, 1℃), the excavator controller controls the fan of air conditioner 1 to be turned off, the fan of air conditioner 2 to heat at half of its rated power, and the excavator controller controls the boiler heating system to heat at one-third of its rated power. When ΔT = T6 - T4 is within the range of (0℃, 0.5℃), only the fan of air conditioner 2 heats at one-third of its rated power, and the excavator controller controls the boiler heating system to stop working. When ΔT = T6 - T4 is less than 0℃, the controller outputs a control to stop the fans of both air conditioners.

[0059] Therefore, this embodiment of the invention uses the fusion of multiple temperature sensors and advanced control algorithms to control the heating status of two air conditioning and boiler heating systems, thereby achieving heating control of the cab. It can accurately control the temperature of the upper compartment of the excavator cab within the set range, with temperature fluctuations of less than ±1℃, significantly improving the comfort of the driver.

[0060] In other aspects of the embodiments of the present invention, the multiple air conditioners include a first air conditioner (air conditioner 1), a second air conditioner (air conditioner 2), and a third air conditioner (air conditioner 3). Step 1462, when the actual temperature value is greater than or equal to a third set temperature threshold, determines the heating status of the multiple air conditioners of the working machinery based on the deviation between the set temperature expectation value and the actual temperature value, so as to realize the heating control of the cab, includes: when the deviation between the set temperature expectation value and the actual temperature value is within a fourth set threshold range, controlling the three air conditioners to perform heating at the second set power respectively; when the deviation between the set temperature expectation value and the actual temperature value is within a fifth set threshold range, controlling the three air conditioners to perform heating at the second set power respectively. Under a given threshold range, control any one of the three air conditioners to stop heating; if the deviation between the set desired temperature value and the actual temperature value is within a sixth set threshold range, control any two of the three air conditioners to stop heating; if the deviation between the set desired temperature value and the actual temperature value is within a seventh set threshold range, control any two of the three air conditioners to stop heating, and control the air conditioner other than the two air conditioners to perform heating at a second regulating power; if the deviation between the set desired temperature value and the actual temperature value is less than a second set deviation threshold, control all three air conditioners to stop heating respectively.

[0061] The second adjustment power is calculated based on the second set power and the second set ratio; the minimum value in the fourth set threshold range is greater than the maximum value in the fifth set threshold range; the minimum value in the fifth set threshold range is greater than the maximum value in the sixth set threshold range; the minimum value in the sixth set threshold range is greater than the maximum value in the seventh set threshold range; the second set deviation threshold is less than the minimum value in the seventh set threshold range.

[0062] In one embodiment, the second set power can be the rated power of the air conditioner, and the second set ratio can be one-half. The fourth set threshold range can be (2℃, +∞), the fifth set threshold range can be (1℃, 2℃), the sixth set threshold range can be (0.5℃, 1℃), the seventh set threshold range can be (0℃, 0.5℃), and the second set deviation threshold can be 0℃.

[0063] For example, during the heating process of the upper cab of the excavator, after the engine is started, the heated cool water is led to the air conditioner evaporator to heat the air around the water pipe. The air conditioner fan blows the heated air through the air duct to the upper cab to heat the upper cab. When the deviation ΔT = T6 - T4 between the set expected temperature value (T6) and the actual temperature value (T4) is within the range of (2℃, +∞), the excavator controller controls the fans of the three air conditioners to operate at their rated power. When ΔT = T6 - T4 is within the range of (1℃, 2℃), the excavator controller controls the fan of air conditioner 1 to be turned off, while the fans of the other two air conditioners operate at their rated power. When ΔT = T6 - T4 is within the range of (0.5℃, 1℃), the excavator controller controls the fans of air conditioners 1 and 2 to be turned off, while the fan of air conditioner 3 operates at its rated power. When ΔT = T6 - T4 is within the range of (0℃, 0.5℃), only the fan of air conditioner 3 operates at half its rated power. When ΔT = T6 - T4 is less than 0℃, the excavator controller outputs a control to stop the fans of the three air conditioners from operating.

[0064] Therefore, this embodiment of the invention controls the heating status of three air conditioners by fusing multiple temperature sensors and using advanced control algorithms to achieve heating control of the cab. This further enables precise control of the temperature in the upper compartment of the excavator cab within a set range, with temperature fluctuations of less than ±1℃, significantly improving the driver's comfort.

[0065] In other aspects of this invention, the plurality of air conditioners includes three air conditioners. The three air conditioners include a first air conditioner (air conditioner 1), a second air conditioner (air conditioner 2), and a third air conditioner (air conditioner 3). Step 1463 involves controlling the heating device to start heating when the actual temperature value is less than a third set temperature threshold, and determining the heating state of the heating device and the plurality of air conditioners of the working machinery based on the deviation between the set temperature expectation value and the actual temperature value, to achieve heating control of the cab. This includes: when the deviation between the set temperature expectation value and the actual temperature value is within a fourth set threshold range, controlling the three air conditioners to perform heating at a second set power, and controlling the heating device to perform heating at a third set power; when the deviation between the set temperature expectation value and the actual temperature value is within a fifth set threshold range, controlling any one of the three air conditioners to stop heating, and controlling the heating device to perform heating at a third adjustable power. The third adjustment power is calculated based on the third set power and the third set ratio; when the deviation between the desired set temperature and the actual temperature is within the range of the sixth set threshold, any two of the three air conditioners are controlled to stop heating, and the heating device is controlled to perform heating with the fourth adjustment power; the fourth adjustment power is calculated based on the third set power and the fourth set ratio, and the fourth set ratio is less than the third set ratio; when the deviation between the desired set temperature and the actual temperature is within the range of the seventh set threshold, any two of the three air conditioners are controlled to stop heating, and the air conditioner other than the two air conditioners is controlled to perform heating with the second adjustment power, and the heating device is controlled to stop heating; when the deviation between the actual temperature and the desired set temperature is less than the second set deviation threshold, the three air conditioners are controlled to stop heating respectively.

[0066] The second adjustment power is calculated based on the second set power and the second set ratio; the minimum value in the fourth set threshold range is greater than the maximum value in the fifth set threshold range; the minimum value in the fifth set threshold range is greater than the maximum value in the sixth set threshold range; the minimum value in the sixth set threshold range is greater than the maximum value in the seventh set threshold range; the second set deviation threshold is less than the minimum value in the seventh set threshold range.

[0067] In one embodiment, the second set power can be the rated power of the air conditioner, and the second set ratio can be one-half. The fourth set threshold range can be (2℃, +∞), the fifth set threshold range can be (1℃, 2℃), the sixth set threshold range can be (0.5℃, 1℃), the seventh set threshold range can be (0℃, 0.5℃), and the second set deviation threshold can be 0℃.

[0068] For example, during the heating process of the upper cab of the excavator, after the engine starts, heated cooling water is led to the air conditioner evaporator to heat the air around the water pipes. The air conditioner fan blows the heated air through the duct to the upper cab to heat it. When the deviation ΔT = |T4-T6| = T6-T4 between the actual temperature value (T4) and the set expected temperature value (T6) is within the range of (2℃, +∞), the excavator controller controls the fans of the three air conditioners to operate at rated power, and also controls the boiler heat collection system to operate at rated power. When ΔT = T6-T4 is within the range of (1℃, 2℃), the excavator controller controls the fan of air conditioner 1 to be turned off, while the fans of the other two air conditioners operate at rated power, and also controls the boiler heat collection system to operate at rated power. The system operates at half capacity. When ΔT = T6 - T4 is within the range of (0.5℃, 1℃), the excavator controller controls the fans of air conditioners 1 and 2 to shut off, the fan of air conditioner 3 to operate at its rated power, and the excavator controller controls the boiler heat collection system to operate at one-third of its rated power. When ΔT = T6 - T4 is within the range of (0℃, 0.5℃), only the fan of air conditioner 3 operates at half its rated power, and the excavator controller controls the boiler heat collection system to stop operating. When ΔT = T6 - T4 is less than 0℃, the controller outputs a control to stop the fans of all three air conditioners.

[0069] Therefore, this embodiment of the invention controls the heating status of three air conditioning and boiler heat collection systems by fusing multiple temperature sensors and using advanced control algorithms to achieve heating control of the cab. This further enables precise control of the temperature in the upper compartment of the excavator cab within the set range, with temperature fluctuations of less than ±1℃, significantly improving the driver's comfort.

[0070] In other aspects of the embodiments of the present invention, the cab temperature control method of the present invention also includes energy-saving optimization measures: namely, intelligent sleep and wake-up functions. When the excavator stops working for a set time threshold (e.g., 1 hour), the ambient temperature sensor, sunlight sensor, heat insulation device, multiple air conditioners, multiple temperature sensors, and heating device are put into sleep mode to reduce energy consumption. When the excavator start signal is detected, the temperature control is quickly woken up and restored, and the ambient temperature sensor, sunlight sensor, heat insulation device, multiple air conditioners, multiple temperature sensors, and heating device are woken up. At the same time, by recovering and utilizing the waste heat of the excavator engine to heat the cab, energy utilization efficiency is further improved. The engine waste heat refers to the cooling water in the coolant pipes that has been heated when the engine is running. When the engine just stops working, it has heat. The cooling water at this time is led through the cooling water pipes to the evaporator pipes of the air conditioner to heat the air around the water pipes. Then the air conditioner fan blows the heated air through the air duct to the upper compartment of the cab to achieve the purpose of heating the cab.

[0071] Therefore, this invention, through energy-saving measures such as intelligent sleep mode and waste heat recovery, reduces overall energy consumption by 20%-30% compared to traditional temperature control methods due to the use of closed-loop intelligent control, thus improving energy utilization efficiency. This invention also achieves precise and rapid control of the temperature in the upper compartment of the excavator cab, improving driver comfort and work efficiency while reducing system energy consumption.

[0072] Please refer to Figure 2 On the other hand, embodiments of the present invention also provide a cab temperature control device, comprising: The receiving module 210 is used to receive a temperature control command; the temperature control command carries a set desired temperature value. The first acquisition module 220 is used to acquire multiple temperature values ​​in response to the temperature control command; the multiple temperature values ​​are used to characterize the temperature corresponding to different positions in the cab of the operating machinery. The first determining module 230 is used to determine the initial temperature value corresponding to the cab based on the plurality of temperature values; Temperature control module 240 is used to adjust the working status of the air conditioning system of the operating machinery based on the initial temperature value and the set temperature expectation value.

[0073] This invention, in its embodiments, adjusts the operating state of the internal air conditioning system of the operating machinery based on an initial temperature value calculated from multiple temperature values ​​and a set desired temperature value to achieve cab temperature control. This invention improves the accuracy of cab temperature control.

[0074] Optionally, the air conditioning system of the operating machinery includes multiple air conditioners, and adjusting the operating state of the air conditioning system of the operating machinery based on the initial temperature value and the set desired temperature value includes: When the desired set temperature is less than the initial temperature and the desired set temperature is greater than or equal to the first set temperature threshold, the plurality of air conditioners are controlled to perform cooling at the first set power respectively. During the process of controlling the multiple air conditioners to perform cooling at a first set power, the actual temperature value corresponding to the cab is determined in real time. Based on the deviation between the actual temperature value and the set expected temperature value, the cooling status of the multiple air conditioners of the operating machinery is determined in order to achieve cooling control of the cab.

[0075] Optionally, the plurality of air conditioners includes three air conditioners. The step of determining the cooling status of the plurality of air conditioners on the operating machinery based on the deviation between the actual temperature value and the set desired temperature value, in order to achieve cooling control of the cab, includes: If the deviation between the actual temperature value and the set desired temperature value is within a first set threshold range, control any one of the three air conditioners to stop cooling. If the deviation between the actual temperature value and the set desired temperature value is within the range of a second set threshold, control any two of the three air conditioners to stop cooling. If the deviation between the actual temperature value and the set temperature expectation value is within the range of the third set threshold, control any two of the three air conditioners to stop cooling, and control the air conditioners other than the two air conditioners to perform cooling at the first regulating power. If the deviation between the actual temperature value and the set temperature expectation value is less than a first set deviation threshold, control the three air conditioners to stop cooling respectively; The first adjustment power is calculated based on the first set power and the first set ratio; the minimum value in the first set threshold range is greater than the maximum value in the second set threshold range; the minimum value in the second set threshold range is greater than the maximum value in the third set threshold range; the first set deviation threshold is less than the minimum value in the third set threshold range.

[0076] Optionally, the air conditioning system of the operating machinery includes multiple air conditioners, and adjusting the operating state of the air conditioning system of the operating machinery based on the initial temperature value and the set desired temperature value includes: When the desired set temperature value is greater than the initial temperature value and the desired set temperature value is less than the second set temperature threshold, multiple air conditioners are controlled to perform heating at the second set power. When multiple air conditioners are controlled to heat at a second set power and the heating time reaches the set time, the actual temperature value corresponding to the cab is determined in real time. Based on the deviation between the set expected temperature value and the actual temperature value, the heating status of multiple air conditioners of the operating machinery is determined in order to achieve heating control of the cab.

[0077] Optionally, determining the heating status of multiple air conditioners on the operating machinery based on the deviation between the set expected temperature value and the actual temperature value, in order to achieve heating control of the cab, includes: Determine the comparison result between the actual temperature value and the third set temperature threshold; the third set temperature threshold is less than the expected set temperature value. When the actual temperature value is greater than or equal to the third set temperature threshold, the heating status of multiple air conditioners of the operating machinery is determined based on the deviation between the set temperature expectation value and the actual temperature value, so as to realize the heating control of the cab. When the actual temperature value is less than the third set temperature threshold, the heating device is controlled to start heating, and the heating status of the heating device and the multiple air conditioners of the working machinery is determined based on the deviation between the set temperature expectation value and the actual temperature value, so as to realize the heating control of the cab.

[0078] Optionally, the plurality of air conditioners includes three air conditioners. When the actual temperature value is greater than or equal to a third set temperature threshold, the heating status of the plurality of air conditioners on the operating machinery is determined based on the deviation between the expected set temperature value and the actual temperature value, in order to achieve heating control of the cab, including: When the deviation between the set temperature expectation value and the actual temperature value is within the fourth set threshold range, the three air conditioners are controlled to perform heating at the second set power respectively. If the deviation between the set desired temperature value and the actual temperature value is within the range of the fifth set threshold, control any one of the three air conditioners to stop heating. If the deviation between the set temperature expectation value and the actual temperature value is within the sixth set threshold range, control any two of the three air conditioners to stop heating. If the deviation between the set temperature expectation value and the actual temperature value is within the range of the seventh set threshold, control any two of the three air conditioners to stop heating, and control the air conditioners other than the two air conditioners to perform heating at the second regulating power. If the deviation between the set desired temperature value and the actual temperature value is less than the second set deviation threshold, control the three air conditioners to stop heating respectively; The second adjustment power is calculated based on the second set power and the second set ratio; the minimum value in the fourth set threshold range is greater than the maximum value in the fifth set threshold range; the minimum value in the fifth set threshold range is greater than the maximum value in the sixth set threshold range; the minimum value in the sixth set threshold range is greater than the maximum value in the seventh set threshold range; the second set deviation threshold is less than the minimum value in the seventh set threshold range.

[0079] Optionally, the plurality of air conditioners includes three air conditioners. When the actual temperature value is less than a third set temperature threshold, the heating device is controlled to start heating. Based on the deviation between the desired set temperature value and the actual temperature value, the heating status of the heating device and the plurality of air conditioners on the operating machinery is determined to achieve heating control of the cab, including: When the deviation between the set temperature expectation value and the actual temperature value is within the range of the fourth set threshold, the three air conditioners are controlled to perform heating at the second set power, and the heating device is controlled to perform heating at the third set power. If the deviation between the desired set temperature and the actual temperature is within a fifth set threshold range, control any one of the three air conditioners to stop heating, and control the heating device to perform heating at a third adjustable power; the third adjustable power is calculated based on the third set power and the third set ratio. If the deviation between the set temperature expectation value and the actual temperature value is within the range of the sixth set threshold, control any two of the three air conditioners to stop heating, and control the heating device to perform heating with the fourth adjustment power; the fourth adjustment power is calculated based on the third set power and the fourth set ratio, and the fourth set ratio is less than the third set ratio; When the deviation between the set temperature expectation value and the actual temperature value is within the range of the seventh set threshold, control any two of the three air conditioners to stop heating, control the air conditioners other than the two air conditioners to perform heating at the second regulating power, and control the heating device to stop heating. If the deviation between the actual temperature value and the set temperature expectation value is less than the second set deviation threshold, control the three air conditioners to stop heating respectively; The second adjustment power is calculated based on the second set power and the second set ratio; the minimum value in the fourth set threshold range is greater than the maximum value in the fifth set threshold range; the minimum value in the fifth set threshold range is greater than the maximum value in the sixth set threshold range; the minimum value in the sixth set threshold range is greater than the maximum value in the seventh set threshold range; the second set deviation threshold is less than the minimum value in the seventh set threshold range.

[0080] Optionally, the device further includes: The second acquisition module is used to acquire the ambient temperature value outside the cab and the light intensity corresponding to the cab. The second determining module is used to determine that the heat insulation device of the operating machinery is in the heat insulation state when the ambient temperature value is greater than or equal to the fourth set temperature threshold and the light intensity is greater than or equal to the set light intensity threshold. The third determining module is used to determine that the heat insulation device of the operating machinery is in a closed heat insulation state when the ambient temperature value is less than the fifth set temperature threshold and the light intensity is greater than or equal to the set light intensity threshold. The fourth set temperature threshold is greater than the fifth set temperature threshold.

[0081] The cab temperature control device includes a processor and a memory. The receiving module 210, the first acquisition module 220, the first determination module 230, and the temperature control module 240 are all stored as program units in the memory. The processor executes the program units stored in the memory to realize the corresponding functions.

[0082] A processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured.

[0083] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0084] Please refer to Figure 3 , Figure 3 An example is a schematic diagram of the physical structure of a work machine, such as... Figure 3As shown, the operating machinery may include: a processor 310, a communication interface 320, a memory 330, and a communication bus 340, wherein the processor 310, the communication interface 320, and the memory 330 communicate with each other through the communication bus 340. The processor 310 can call logical instructions in the memory 330 to execute a cab temperature control method, which includes: receiving a temperature control instruction; the temperature control instruction carrying a set temperature expectation value; in response to the temperature control instruction, acquiring multiple temperature values; the multiple temperature values ​​being used to characterize the temperature corresponding to different positions in the operating machinery cab; determining an initial temperature value corresponding to the cab based on the multiple temperature values; and adjusting the operating state of the operating machinery's air conditioning system based on the initial temperature value and the set temperature expectation value.

[0085] Furthermore, the logical instructions in the aforementioned memory 330 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0086] On the other hand, please refer to Figure 4 The operating machinery of this invention also includes an ambient temperature sensor 20, a sunlight sensor 30, a heat insulation device (not shown), multiple air conditioners 40, multiple temperature sensors 50, a heating device, and a human-machine interaction display screen 70, all of which are electrically connected to the operating machinery.

[0087] The operating machinery includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the aforementioned cab temperature control method. In one embodiment, the operating machinery may be a super-large excavator 10. The processor may be a Rexroth controller, located inside the electrical control cabinet in the lower cab, used for signal acquisition, algorithm calculation, calculation result output, and alarm output.

[0088] An ambient temperature sensor 20 is used to collect the ambient temperature value outside the operating machinery. The ambient temperature sensor 20 is installed on the turntable of the excavator 10 to detect the ambient temperature in real time.

[0089] A sunlight sensor 30 is used to collect the intensity of sunlight shining on the operating machinery. The sunlight sensor 30 is installed at the front of the left control panel in the upper cab of the excavator 10 and is used to detect the sunlight in the upper cab of the excavator 10.

[0090] A heat insulation device is used to block sunlight from entering the interior of the machine. The heat insulation device can be curtains installed on the left and right sides of the upper cabin of the operator's cab.

[0091] Multiple temperature sensors 50 are used to collect temperature values ​​at multiple locations in the cab. A temperature sensor group consisting of multiple temperature sensors 50 is distributed at various key locations in the upper cab to collect upper cab temperature data in real time. In this embodiment, three temperature sensors 50 are used, respectively installed at the bottom of the main driver's seat, the bottom of the passenger seat, and inside the left control panel in the upper cab, to detect the ambient temperature at various locations in the upper cab in real time.

[0092] The heating device can be a boiler heating system 60, which can heat the air in the cab by burning diesel fuel during construction in low-temperature seasons. When driving, the engine coolant heats the air, and the heated air is then delivered to the upper cab through the air conditioning duct 40 to heat the upper cab. However, in winter, before driving or when the air heated by the coolant is insufficient to quickly raise the temperature of the upper cab, the boiler heating system 60 can be activated to heat the upper cab. The boiler heating system 60 is controlled by a controller when driving, and its control is set on the display screen 70 when parked.

[0093] The human-machine interface display screen 70 facilitates operator settings, input control information for the boiler heating system 60 when the machine is parked, alarm prompts, and viewing of system operating status. The human-machine interface display screen 70 is installed on the left A-pillar of the upper cab of the excavator 10, used to set the required cab temperature, real-time temperature, and ambient temperature, while simultaneously controlling the boiler heating system 60.

[0094] Multiple air conditioners (40) are located in the lower compartment of the driver's cab and are used to heat or cool the machinery. Please refer to [reference needed]. Figure 5, the air conditioner includes a compressor clutch, a condenser, an evaporator, air conditioner pipelines (air ducts), etc. The compressor clutch of the air conditioner compresses air under the drive of a hydraulic motor. The hydraulic motor is driven by a hydraulic pump, and the hydraulic pump is driven by a transfer case, and the power of the transfer case comes from the engine. The main function of the condenser is to dissipate the heat in the refrigerant to the surrounding environment. The evaporator changes the refrigerant from a liquid state to a gaseous state and absorbs heat. The air duct is divided into an air inlet duct and an air return duct. The air inlet duct transports the processed air to the upper cabin of the cab, and the used air is discharged through the air return duct. This air flow process ensures that the air pressure in the upper cabin of the cab will not increase.

[0095] In a typical embodiment, please refer to Figure 6 , the refrigeration steps of the upper cabin of the excavator cab are as follows: S1. Power on the electrical system and start the excavator engine.

[0096] S2. Select the intelligent mode through the display screen of the human-machine interaction and set the expected value T6 of the set temperature of the cab.

[0097] S3. The controller of the excavator (referred to as the controller for short) reads the three temperature values T1, T2, and T3 of the temperature sensors at three positions in the upper cabin of the cab, and calculates the actual temperature value T4 of the cab through the weighted average.

[0098] S4. At the same time, read the ambient temperature value T5 collected by the ambient temperature sensor and the light intensity (luminous flux) L1 collected by the sunlight sensor.

[0099] S5. When T5≥25°C and L1≥1000 lm, the controller outputs the calculation and sends it to the display screen through the bus, and a dialog box pops up to remind the operator to close the curtain. After the curtain is closed, click "Confirm" on the display screen, and the dialog box can exit.

[0100] S6. The controller compares the expected value T6 of the set temperature and the actual temperature value T4. When 15°C≤T6<T4, the working state is sent to the controllers of the three air conditioners by the method of the above steps 141 to 143. The controllers of the three air conditioners output signals to control the compressor clutches of the three air conditioners to engage, and refrigerate the upper cabin of the cab.

[0101] S7. During this process, when the actual temperature in the upper cabin of the cab continuously approaches the set temperature, the controller outputs an instruction to turn off one air conditioner or two air conditioners by the method of the above step 143, so that the entire upper cabin of the cab reaches a dynamic balance.

[0102] S8. After the air conditioner receives the controller signal, it disconnects the response, and the compressor clutch of the air conditioner can disconnect the air conditioner.

[0103] S9. When T6 > T4 or T6 < 15°C, the cooling of the upper cabin of the excavator cab is terminated.

[0104] In a typical embodiment, please refer to Figure 7 , the heating steps of the upper cabin of the excavator cab are as follows: S1. Power on the electrical system and start the engine of the excavator.

[0105] S2. Select the intelligent mode through the display screen of the human-machine interaction and set the expected value of the set temperature T6 of the excavator cab.

[0106] S3. The controller of the excavator (referred to as the controller for short) reads the three temperature values T1, T2, and T3 collected by the temperature sensors at three positions in the upper cabin of the cab, and calculates the actual temperature value T4 of the cab through weighted average.

[0107] S4. At the same time, read the ambient temperature value T5 collected by the ambient temperature sensor and the light intensity (luminous flux) L1 collected by the sunlight sensor.

[0108] S5. When T5 < 15°C and L1 ≥ 1000 lm, the controller outputs the calculation and sends it to the display screen through the bus, and a dialog box pops up to remind the operator to open the curtain. After the curtain is opened, click "Confirm" on the display screen, and the dialog box can exit.

[0109] S6. The controller compares the set temperature expected value T6 and the actual temperature value T4. When T4 < T6 < 15°C, the working state is sent to the three air-conditioning controllers through the methods of steps 144 to 146 above. The three air-conditioning controllers drive the duct motors to let the air heated by the cooling water blow into the upper cabin of the cab, and at the same time extract the cold air from the upper cabin of the cab. During the heating process, only the fan of the air conditioner works, and the compressor, evaporator, and condenser do not need to work.

[0110] S7. During this process, by setting the timing time T, when T = 5 min and T4 is less than 8°C, the controller controls the boiler heating system to heat the upper cabin of the cab. If T4 is greater than or equal to 8°C, the controller sends the working state to the controllers of the three air conditioners, and the controllers of the three air conditioners output signals to control the compressor clutches of the three air conditioners to engage, and refrigerate the upper cabin of the cab.

[0111] S8. During this process, when the actual temperature of the upper cabin of the cab is continuously approaching the set temperature, through the method of step 146, the controller preferentially controls the output to close the boiler heating system according to the real-time ambient temperature, and then outputs an instruction to close one or two air conditioners, so that the entire upper cabin of the cab reaches a dynamic balance, ensuring that the power consumption of the electrical system is minimized.

[0112] Traditional methods only allow selection of a single temperature setting. Although the desired cab temperature is set, due to the limitation of the set setting, the actual temperature may never be reached or may even exceed the preset temperature. Furthermore, the system will continuously operate at a single setting, requiring manual intervention to achieve the desired cooling or heating quickly, and it consumes a lot of electricity. The cab temperature control system of this invention, however, has the following advantages: Precise temperature control: Through the fusion of multiple sensors and advanced control algorithms, the temperature of the upper cabin can be precisely controlled within the set range, with temperature fluctuations of less than ±1℃, significantly improving driver comfort.

[0113] Rapid response: The system responds quickly and can adjust the cabin temperature to a suitable range in a short time (5-10 minutes) when the ambient temperature changes rapidly or the excavator's operating conditions change.

[0114] Energy saving and consumption reduction: Compared with traditional temperature control systems, energy-saving measures such as intelligent hibernation and waste heat recovery reduce overall energy consumption by 20% - 30% due to the use of closed-loop intelligent control, thus improving energy utilization efficiency.

[0115] Improve work efficiency: A comfortable temperature environment helps drivers maintain a good working condition, reduces operational errors caused by temperature discomfort, and improves the efficiency and safety of excavator operation.

[0116] On the other hand, the present invention also provides a computer program product, the computer program product including a computer program that can be stored on a machine-readable storage medium, wherein when the computer program is executed by a processor, the computer is able to execute a cab temperature control method, the method comprising: receiving a temperature control command; the temperature control command carrying a set temperature expectation value; in response to the temperature control command, acquiring a plurality of temperature values; the plurality of temperature values ​​being used to characterize the temperature corresponding to different positions in the cab of the operating machinery; determining an initial temperature value corresponding to the cab based on the plurality of temperature values; and adjusting the operating state of the air conditioning system of the operating machinery based on the initial temperature value and the set temperature expectation value.

[0117] In another aspect, the present invention also provides a machine-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a cab temperature control method, the method comprising: receiving a temperature control command; the temperature control command carrying a set temperature expectation value; in response to the temperature control command, acquiring a plurality of temperature values; the plurality of temperature values ​​being used to characterize the temperature corresponding to different positions in the cab of the operating machinery; determining an initial temperature value corresponding to the cab based on the plurality of temperature values; and adjusting the operating state of the air conditioning system of the operating machinery based on the initial temperature value and the set temperature expectation value.

[0118] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0119] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0120] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling cab temperature, characterized in that, include: Receive temperature control commands; The temperature control command carries a set desired temperature value; In response to the temperature control command, multiple temperature values ​​are acquired; The multiple temperature values ​​are used to characterize the temperature at different locations within the cab of the operating machinery. Based on the multiple temperature values, the initial temperature value corresponding to the cab is determined; Based on the initial temperature value and the set desired temperature value, adjust the working status of the air conditioning system of the operating machinery; The air conditioning system of the operating machinery includes multiple air conditioners. Adjusting the operating state of the air conditioning system of the operating machinery based on the initial temperature value and the desired set temperature value includes: When the desired set temperature is less than the initial temperature and the desired set temperature is greater than or equal to the first set temperature threshold, the plurality of air conditioners are controlled to perform cooling at the first set power respectively. During the process of controlling the multiple air conditioners to perform cooling at a first set power, the actual temperature value corresponding to the cab is determined in real time. Based on the deviation between the actual temperature value and the set expected temperature value, the cooling status of the multiple air conditioners of the operating machinery is determined in order to achieve cooling control of the cab. When the desired set temperature value is greater than the initial temperature value and the desired set temperature value is less than the second set temperature threshold, multiple air conditioners are controlled to perform heating at the second set power. When multiple air conditioners are controlled to heat at a second set power and the heating time reaches the set time, the actual temperature value corresponding to the cab is determined in real time. Based on the deviation between the set expected temperature value and the actual temperature value, the heating status of multiple air conditioners of the operating machinery is determined in order to achieve heating control of the cab. The step of determining the heating status of multiple air conditioners on the operating machinery based on the deviation between the set expected temperature value and the actual temperature value, in order to achieve heating control of the cab, includes: Determine the comparison result between the actual temperature value and the third set temperature threshold; the third set temperature threshold is less than the expected set temperature value. When the actual temperature value is greater than or equal to the third set temperature threshold, the heating status of multiple air conditioners of the operating machinery is determined based on the deviation between the set temperature expectation value and the actual temperature value, so as to realize the heating control of the cab. When the actual temperature value is less than the third set temperature threshold, the heating device is controlled to start heating, and the heating status of the heating device and the multiple air conditioners of the working machinery is determined based on the deviation between the set temperature expectation value and the actual temperature value, so as to realize the heating control of the cab.

2. The cab temperature control method according to claim 1, characterized in that, The plurality of air conditioners includes three air conditioners. The determination of the cooling status of the plurality of air conditioners on the operating machinery based on the deviation between the actual temperature value and the set desired temperature value, in order to achieve cooling control of the cab, includes: If the deviation between the actual temperature value and the set desired temperature value is within a first set threshold range, control any one of the three air conditioners to stop cooling. If the deviation between the actual temperature value and the set desired temperature value is within the range of a second set threshold, control any two of the three air conditioners to stop cooling. If the deviation between the actual temperature value and the set temperature expectation value is within the range of the third set threshold, control any two of the three air conditioners to stop cooling, and control the air conditioners other than the two air conditioners to perform cooling at the first regulating power. If the deviation between the actual temperature value and the set temperature expectation value is less than a first set deviation threshold, control the three air conditioners to stop cooling respectively; The first adjustment power is calculated based on the first set power and the first set ratio; the minimum value in the first set threshold range is greater than the maximum value in the second set threshold range; the minimum value in the second set threshold range is greater than the maximum value in the third set threshold range; the first set deviation threshold is less than the minimum value in the third set threshold range.

3. The cab temperature control method according to claim 1, characterized in that, The plurality of air conditioners includes three air conditioners. When the actual temperature value is greater than or equal to a third set temperature threshold, the heating status of the plurality of air conditioners on the operating machinery is determined based on the deviation between the expected set temperature value and the actual temperature value, in order to achieve heating control of the cab, including: When the deviation between the set temperature expectation value and the actual temperature value is within the fourth set threshold range, the three air conditioners are controlled to perform heating at the second set power respectively. If the deviation between the set desired temperature value and the actual temperature value is within the range of the fifth set threshold, control any one of the three air conditioners to stop heating. If the deviation between the set temperature expectation value and the actual temperature value is within the sixth set threshold range, control any two of the three air conditioners to stop heating. If the deviation between the set temperature expectation value and the actual temperature value is within the range of the seventh set threshold, control any two of the three air conditioners to stop heating, and control the air conditioners other than the two air conditioners to perform heating at the second regulating power. If the deviation between the set desired temperature value and the actual temperature value is less than the second set deviation threshold, control the three air conditioners to stop heating respectively; The second adjustment power is calculated based on the second set power and the second set ratio; the minimum value in the fourth set threshold range is greater than the maximum value in the fifth set threshold range; the minimum value in the fifth set threshold range is greater than the maximum value in the sixth set threshold range; the minimum value in the sixth set threshold range is greater than the maximum value in the seventh set threshold range; the second set deviation threshold is less than the minimum value in the seventh set threshold range.

4. The cab temperature control method according to claim 3, characterized in that, The plurality of air conditioners includes three air conditioners. When the actual temperature value is less than a third set temperature threshold, the heating device is controlled to start heating. Based on the deviation between the set temperature expectation value and the actual temperature value, the heating status of the heating device and the plurality of air conditioners of the operating machinery is determined to achieve heating control of the cab, including: When the deviation between the set temperature expectation value and the actual temperature value is within the range of the fourth set threshold, the three air conditioners are controlled to perform heating at the second set power, and the heating device is controlled to perform heating at the third set power. If the deviation between the desired set temperature and the actual temperature is within a fifth set threshold range, control any one of the three air conditioners to stop heating, and control the heating device to perform heating at a third adjustable power; the third adjustable power is calculated based on the third set power and the third set ratio. If the deviation between the set temperature expectation value and the actual temperature value is within the range of the sixth set threshold, control any two of the three air conditioners to stop heating, and control the heating device to perform heating with the fourth adjustment power; the fourth adjustment power is calculated based on the third set power and the fourth set ratio, and the fourth set ratio is less than the third set ratio; When the deviation between the set temperature expectation value and the actual temperature value is within the range of the seventh set threshold, control any two of the three air conditioners to stop heating, control the air conditioners other than the two air conditioners to perform heating at the second regulating power, and control the heating device to stop heating. If the deviation between the actual temperature value and the set temperature expectation value is less than the second set deviation threshold, control the three air conditioners to stop heating respectively; The second adjustment power is calculated based on the second set power and the second set ratio; the minimum value in the fourth set threshold range is greater than the maximum value in the fifth set threshold range; the minimum value in the fifth set threshold range is greater than the maximum value in the sixth set threshold range; the minimum value in the sixth set threshold range is greater than the maximum value in the seventh set threshold range; the second set deviation threshold is less than the minimum value in the seventh set threshold range.

5. The cab temperature control method according to claim 1, characterized in that, The method further includes: The ambient temperature outside the cab and the light intensity corresponding to the cab are obtained. If the ambient temperature is greater than or equal to a fourth set temperature threshold and the light intensity is greater than or equal to a set light intensity threshold, the heat insulation device of the working machinery is determined to be in the heat insulation state. If the ambient temperature is less than the fifth set temperature threshold and the light intensity is greater than or equal to the set light intensity threshold, the heat insulation device of the working machinery is determined to be in the closed heat insulation state. The fourth set temperature threshold is greater than the fifth set temperature threshold.

6. A driver's cab temperature control device, characterized in that, include: The receiving module is used to receive temperature control commands; The temperature control command carries a set desired temperature value; The first acquisition module is used to acquire multiple temperature values ​​in response to the temperature control command; The multiple temperature values ​​are used to characterize the temperature at different locations within the cab of the operating machinery. The first determining module is used to determine the initial temperature value corresponding to the cab based on the plurality of temperature values; A temperature control module is used to adjust the operating status of the air conditioning system of the operating machinery based on the initial temperature value and the set temperature expectation value. The air conditioning system of the operating machinery includes multiple air conditioners. Adjusting the operating state of the air conditioning system of the operating machinery based on the initial temperature value and the desired set temperature value includes: When the desired set temperature is less than the initial temperature and the desired set temperature is greater than or equal to the first set temperature threshold, the plurality of air conditioners are controlled to perform cooling at the first set power respectively. During the process of controlling the multiple air conditioners to perform cooling at a first set power, the actual temperature value corresponding to the cab is determined in real time. Based on the deviation between the actual temperature value and the set expected temperature value, the cooling status of the multiple air conditioners of the operating machinery is determined in order to achieve cooling control of the cab. When the desired set temperature value is greater than the initial temperature value and the desired set temperature value is less than the second set temperature threshold, multiple air conditioners are controlled to perform heating at the second set power. When multiple air conditioners are controlled to heat at a second set power and the heating time reaches the set time, the actual temperature value corresponding to the cab is determined in real time. Based on the deviation between the set expected temperature value and the actual temperature value, the heating status of multiple air conditioners of the operating machinery is determined in order to achieve heating control of the cab. The step of determining the heating status of multiple air conditioners on the operating machinery based on the deviation between the set expected temperature value and the actual temperature value, in order to achieve heating control of the cab, includes: Determine the comparison result between the actual temperature value and the third set temperature threshold; the third set temperature threshold is less than the expected set temperature value. When the actual temperature value is greater than or equal to the third set temperature threshold, the heating status of multiple air conditioners of the operating machinery is determined based on the deviation between the set temperature expectation value and the actual temperature value, so as to realize the heating control of the cab. When the actual temperature value is less than the third set temperature threshold, the heating device is controlled to start heating, and the heating status of the heating device and the multiple air conditioners of the working machinery is determined based on the deviation between the set temperature expectation value and the actual temperature value, so as to realize the heating control of the cab.

7. A working machine, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the cab temperature control method according to any one of claims 1 to 5.

8. The operating machinery according to claim 7, characterized in that, The operating machinery also includes an ambient temperature sensor, a sunlight sensor, multiple air conditioners, and multiple temperature sensors, all of which are electrically connected to the processor. The ambient temperature sensor is used to collect the ambient temperature value outside the cab; The sunlight sensor is used to collect the intensity of light shining into the cab; The plurality of air conditioners are used to heat or cool the driver's cab; The multiple temperature sensors are used to collect the temperature at different locations in the cab.

9. A machine-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the cab temperature control method according to any one of claims 1 to 5.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the cab temperature control method according to any one of claims 1 to 5.

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