A dual-source refrigeration system for cabin cooling

Abstract

The present invention belongs to the technical field of cabin cooling control, and specifically relates to a dual-cold source refrigeration system for cabin cooling, comprising a cabin temperature detection module, a cold source control module, a dual-cold source refrigeration module, a dual-cold source coordination evaluation module and a user interaction interface module; the present invention adjusts the working states of two refrigeration cycles according to a preset temperature control strategy through the cold source control module, thereby achieving precise control of the cabin temperature and improving the operating efficiency and stability of the cabin equipment, and accurately judges the temperature control status in the cabin through the dual-cold source coordination evaluation module and makes corresponding adjustment measures in time, and can evaluate the operating status of the dual-cold source refrigeration module, and perform maintenance management analysis when generating a diagnosis failure signal to accurately judge the potential relationship between the diagnosis abnormality of the dual-cold source refrigeration module and the personnel maintenance management factors, which is conducive to ensuring the subsequent cabin cooling effect and the safe and stable operation of the dual-cold source refrigeration module, and has a high degree of intelligence.

Description

Technical Field

[0001] The invention relates to the technical field of cabin cooling control, and in particular to a dual-cold-source refrigeration system for cabin cooling. Background Art

[0002] With the continuous development of modern industrial technology, the requirements of cabin equipment for cooling systems are getting higher and higher. The dual-cold source refrigeration system can provide a more stable and efficient cooling effect by integrating two independently operated refrigeration cycles.

[0003] At present, it is difficult to realize automatic control of two refrigeration cycles based on dual-cold source refrigeration technology for cabin refrigeration, and it is impossible to reasonably evaluate the coordination effect of dual-cold source refrigeration and accurately feedback its operating performance. When the operating performance of dual-cold source refrigeration is poor, it is impossible to judge the potential relationship with maintenance and management factors, and the degree of intelligence is low;

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a dual-cold source refrigeration system for cabin cooling, which solves the problems that the prior art is difficult to realize automatic control of two refrigeration cycles based on dual-cold source refrigeration technology when used for cabin cooling, and is unable to reasonably evaluate the coordination effect of dual-cold source refrigeration and accurately feedback its operating performance, and is unable to judge the potential relationship with maintenance and management factors when feedback is that the operating performance of dual-cold source refrigeration is poor, and has a low level of intelligence.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A dual cold source refrigeration system for cabin cooling includes a cabin temperature detection module, a cold source control module, a dual cold source refrigeration module, a dual cold source coordination evaluation module and a user interaction interface module;

[0008] The cabin temperature detection module is used to monitor the cabin temperature in real time and send the collected cabin temperature data to the cold source control module;

[0009] The cold source control module receives the cabin temperature data sent by the cabin temperature detection module, and calculates the refrigeration capacity to be adjusted according to the preset temperature control strategy, and accordingly sends a control instruction to the dual cold source refrigeration module to adjust the working state of the two refrigeration cycles;

[0010] The user interaction interface module is used to display the temperature data in the cabin and the operating status information of the dual cold source refrigeration module, and provides a user operation interface to allow the user to set the temperature control strategy and view historical data;

[0011] The dual-cold source coordination evaluation module is used to analyze the temperature regulation performance of the dual-cold source refrigeration module in the cabin, determine the coordination performance of the two refrigeration cycles, and generate a high coordination signal or a low coordination signal accordingly. The high coordination signal or the low coordination signal is sent to the user interaction interface module. When the user interaction interface module receives the low coordination signal, a corresponding warning is issued.

[0012] Furthermore, the two refrigeration cycles of the dual-cold source refrigeration module are independent of each other, and each refrigeration cycle includes a compressor, a condenser, a throttle valve and an evaporator. During operation, the compressor compresses the refrigerant into a high-temperature and high-pressure gas, which is then sent to the condenser for condensation to form a high-temperature and high-pressure liquid. The high-temperature and high-pressure liquid enters the evaporator after being throttled by the throttle valve, absorbs heat through heat exchange with the air in the cabin, and evaporates into a low-temperature and low-pressure gas, and then returns to the compressor for the next cycle.

[0013] Furthermore, the specific operation process of the dual cold source coordination evaluation module is as follows:

[0014] The cabin temperature data is obtained, and the cabin temperature data is numerically compared with the preset cabin temperature data range. If the cabin temperature data is not within the preset cabin temperature data range, it is determined that the dual-cold source refrigeration module is in a non-optimal coordination state; when the dual-cold source refrigeration module is determined to be in a non-optimal coordination state, the timing is started until the cabin temperature data is within the preset cabin temperature data range, and the non-optimal coordination time is obtained accordingly;

[0015] All the non-optimal coordination time lengths within a unit time are obtained and summed up to obtain the coordination inferior time value, and the coordination inferior time value is numerically compared with the preset coordination inferior time threshold. If the coordination inferior time value exceeds the preset coordination inferior time threshold, a low coordination signal is generated.

[0016] Furthermore, if the inferior coordination time value does not exceed the preset inferior coordination time threshold, the non-optimal coordination time is numerically compared with the preset non-optimal coordination time threshold. If the non-optimal coordination time exceeds the preset non-optimal coordination time threshold, the corresponding non-optimal coordination time is marked as an excessive duration. The number of excessive durations in a unit time is obtained and marked as a non-optimal coordination detection value, and the corresponding excessive duration compared with the preset non-optimal coordination time threshold is marked as an excessive value. The average of all excessive values ​​in a unit time is calculated to obtain a non-optimal excessive value.

[0017] The dual cold source coordination evaluation value is obtained by numerically calculating the coordination inferior value, the coordination non-optimal detection value and the coordination non-optimal excess value, and the dual cold source coordination evaluation value is numerically compared with the preset dual cold source coordination evaluation threshold. If the dual cold source coordination evaluation value exceeds the preset dual cold source coordination evaluation threshold, a low coordination signal is generated; if the dual cold source coordination evaluation value does not exceed the preset dual cold source coordination evaluation threshold, a low coordination signal is generated.

[0018] Furthermore, the dual cold source cooperation evaluation module is communicatively connected to the dual cold source abnormal diagnosis module, and the dual cold source cooperation evaluation module sends a low cooperation signal or a high cooperation signal to the dual cold source abnormal diagnosis module. The dual cold source abnormal diagnosis module is used to set a detection cycle and evaluate the operating status of the dual cold source refrigeration module within the detection cycle, and generate a diagnosis failure signal or a diagnosis success signal through analysis, and send the diagnosis failure signal or the diagnosis success signal to the user interaction interface module, so that the interaction interface module can issue a corresponding warning when receiving the diagnosis failure signal.

[0019] Furthermore, the specific operation process of the dual cold source abnormal diagnosis module is as follows:

[0020] The number of times the low fit signal is generated within the detection cycle is obtained and marked as a low fit detection value, and the low fit detection value is numerically compared with a preset low fit detection threshold. If the low fit detection value exceeds the preset low fit detection threshold, a diagnosis failure signal is generated.

[0021] If the low matching detection value does not exceed the preset low matching detection threshold, when the cold source control module issues a corresponding instruction to adjust the working states of the two refrigeration cycles, it is determined whether the two refrigeration cycles complete the corresponding adjustment within the corresponding prescribed time. If the corresponding refrigeration cycle does not complete the corresponding adjustment within the corresponding prescribed time, the control symbol KF-1 is allocated to the corresponding refrigeration cycle;

[0022] The number of times the corresponding refrigeration cycle is assigned the control symbol KF-1 during the detection period is obtained and marked as the refrigeration control abnormal detection value, and the refrigeration control abnormal detection value is numerically compared with the preset refrigeration control abnormal detection threshold. If the refrigeration control abnormal detection value exceeds the preset refrigeration control abnormal detection threshold, the corresponding refrigeration cycle is marked as an abnormal cycle; if an abnormal cycle exists, a diagnosis failure signal is generated.

[0023] Furthermore, if there is no abnormal cycle, the refrigeration control abnormality detection values ​​of the two refrigeration cycles are averaged to obtain the refrigeration control abnormality value, and the low matching detection value and the refrigeration control abnormality value are numerically calculated to obtain the refrigeration abnormal diagnosis value, and the refrigeration abnormal diagnosis value is numerically compared with the preset refrigeration abnormal diagnosis threshold. If the refrigeration abnormal diagnosis value exceeds the preset refrigeration abnormal diagnosis threshold, a diagnosis failure signal is generated; if the refrigeration abnormal diagnosis value does not exceed the preset refrigeration abnormal diagnosis threshold, a diagnosis pass signal is generated.

[0024] Furthermore, the dual cold source abnormality diagnosis module is communicatively connected to the dual cold source maintenance management module, the dual cold source abnormality diagnosis module sends a diagnosis failure signal to the dual cold source maintenance management module, and when receiving the diagnosis failure signal, the dual cold source maintenance management module generates a maintenance abnormality signal or a maintenance qualified signal through maintenance management analysis, and sends the maintenance abnormality signal or the maintenance qualified signal to the user interaction interface module, and the user interaction interface module issues a corresponding warning when receiving the maintenance abnormality signal.

[0025] Furthermore, the specific analysis process of maintenance management analysis is as follows:

[0026] The number of times the management personnel perform maintenance on the dual-cold-source refrigeration module within the detection period is collected and marked as the cold-source maintenance value, and the time when the dual-cold-source refrigeration module is maintained is marked as the cold-source maintenance time, and the interval between two adjacent groups of cold-source maintenance times is marked as the cold-source maintenance interval time, and the cold-source maintenance interval time is numerically compared with the preset cold-source maintenance interval time threshold. If the cold-source maintenance interval time exceeds the preset cold-source maintenance interval time threshold, the corresponding cold-source maintenance interval time is marked as an excessive interval time, and the number of excessive interval times within the detection period is marked as the cold-source excessive interval detection value;

[0027] And the single maintenance time for the dual cold source refrigeration module is collected, and the single maintenance time is compared with the preset single maintenance time threshold. If the single maintenance time does not exceed the preset single maintenance time threshold, the corresponding single maintenance time is marked as an out-of-dimensional time, and the number of out-of-dimensional time in the detection period is marked as a cold source out-of-dimensional detection value;

[0028] The cold source maintenance value is obtained by numerically calculating the cold source maintenance value, the cold source over-interval detection value and the cold source out-of-dimensional detection value, and the cold source maintenance value is numerically compared with the preset cold source maintenance threshold. If the cold source maintenance value exceeds the preset cold source maintenance threshold, a maintenance abnormality signal is generated; if the cold source maintenance value does not exceed the preset cold source maintenance threshold, a maintenance qualification signal is generated.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. In the present invention, the cabin temperature is monitored in real time by the cabin temperature detection module, the cold source control module calculates the refrigeration capacity to be adjusted according to the preset temperature control strategy, and sends a control instruction to the dual cold source refrigeration module to adjust the working state of the two refrigeration cycles, so as to achieve accurate control of the cabin temperature and improve the operating efficiency and stability of the cabin equipment. The dual cold source coordination evaluation module determines the coordination performance of the two refrigeration cycles, and can accurately determine the temperature control status of the cabin in real time and make corresponding adjustment measures in time, so as to ensure the cabin cooling effect and the safety of the cabin items, and has a high degree of intelligence.

[0031] 2. In the present invention, the operating status of the dual-cold source refrigeration module within the detection period is evaluated through the dual-cold source abnormal diagnosis module, and when a diagnosis failure signal is generated, a cause investigation and analysis is performed and the dual-cold source refrigeration module is inspected and repaired. When a diagnosis failure signal is generated, a maintenance management analysis is performed through the dual-cold source maintenance management module to accurately determine the potential relationship between the diagnosis abnormality of the dual-cold source refrigeration module and the personnel maintenance management factors, and when the maintenance abnormality signal is generated, the subsequent maintenance management and maintenance personnel supervision training are strengthened, which is conducive to ensuring the subsequent cabin cooling effect and the safe and stable operation of the dual-cold source refrigeration module. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings;

[0033] Figure 1 This is a system block diagram of Embodiment 1 of the present invention;

[0034] Figure 2 This is a system block diagram of Embodiment 2 and Embodiment 3 of the present invention. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1: Figure 1 As shown, the present invention proposes a dual cold source refrigeration system for cabin cooling, comprising a cabin temperature detection module, a cold source control module, a dual cold source refrigeration module, a dual cold source coordination evaluation module and a user interaction interface module; the cabin temperature detection module is used to monitor the cabin temperature in real time, and send the collected cabin temperature data to the cold source control module; wherein the cabin temperature detection module includes a plurality of temperature sensors, which are respectively arranged at different positions in the cabin to obtain more accurate temperature data;

[0037] The cold source control module receives the cabin temperature data sent by the cabin temperature detection module, and calculates the refrigeration capacity to be adjusted according to the preset temperature control strategy, and sends a control instruction to the dual cold source refrigeration module to adjust the working state of the two refrigeration cycles; the dual cold source refrigeration module can work independently or collaboratively (mainly collaboratively) as needed to avoid unnecessary energy consumption and improve energy utilization;

[0038] It should be noted that the two refrigeration cycles of the dual-cold source refrigeration module are independent of each other (that is, the two refrigeration cycles can operate independently or work together to meet the cooling needs at different temperatures), and each refrigeration cycle includes a compressor, a condenser, a throttle valve and an evaporator. During operation, the compressor compresses the refrigerant into a high-temperature and high-pressure gas, which is then sent to the condenser for condensation to form a high-temperature and high-pressure liquid. The high-temperature and high-pressure liquid enters the evaporator after being throttled by the throttle valve, absorbs heat through heat exchange with the air in the cabin and evaporates into a low-temperature and low-pressure gas, and then returns to the compressor for the next cycle.

[0039] The user interaction interface module is used to display the cabin temperature data and the operating status of the dual-cold source refrigeration module and other information, and provides a user operation interface to allow the user to set the temperature control strategy and view historical data;

[0040] The dual cold source coordination evaluation module is used to analyze the temperature regulation performance of the dual cold source refrigeration module in the cabin, judge the coordination performance of the two refrigeration cycles, and generate a high coordination signal or a low coordination signal accordingly, and send the high coordination signal or the low coordination signal to the user interaction interface module. When the user interaction interface module receives the low coordination signal, it issues a corresponding warning, and can accurately judge the temperature control status in the cabin in real time, so as to make corresponding adjustment measures in time, thereby ensuring the cooling effect in the cabin and the safety of the items in the cabin; the specific operation process of the dual cold source coordination evaluation module is as follows:

[0041] The cabin temperature data is obtained, and the cabin temperature data is numerically compared with the preset cabin temperature data range. If the cabin temperature data is not within the preset cabin temperature data range, it is determined that the dual-cold source refrigeration module is in a non-optimal coordination state; when the dual-cold source refrigeration module is determined to be in a non-optimal coordination state, the timing is started until the cabin temperature data is within the preset cabin temperature data range, and the non-optimal coordination time is obtained accordingly;

[0042] All non-optimal coordination time lengths within a unit time are obtained and summed up to obtain the coordination inferior time value, and the coordination inferior time value is numerically compared with the preset coordination inferior time threshold. If the coordination inferior time value exceeds the preset coordination inferior time threshold, it indicates that the cabin temperature control performance is poor and the coordination performance of the dual cold source refrigeration module is poor, then a low coordination signal is generated.

[0043] Furthermore, if the inferior coordination time value does not exceed the preset inferior coordination time threshold, the non-optimal coordination time is numerically compared with the preset non-optimal coordination time threshold. If the non-optimal coordination time exceeds the preset non-optimal coordination time threshold, the corresponding non-optimal coordination time is marked as an excessive duration. The number of excessive durations in a unit time is obtained and marked as a non-optimal coordination detection value, and the corresponding excessive duration compared with the preset non-optimal coordination time threshold is marked as an excessive value. The average of all excessive values ​​in a unit time is calculated to obtain a non-optimal excessive value.

[0044] By formula The coordination evaluation value PX of the dual cold source is obtained by numerically calculating the coordination inferior value PW, the coordination non-optimal detection value PN and the coordination non-optimal super value PQ, wherein the values ​​of a1, a2 and a3 are all positive numbers, a2>a3>a1>0; and the larger the value of the dual cold source coordination evaluation value PX, the worse the cabin temperature control performance is in general, and the worse the coordination performance of the dual cold source refrigeration module is;

[0045] The dual cold source coordination evaluation value PX is numerically compared with the preset dual cold source coordination evaluation threshold. If the dual cold source coordination evaluation value PX exceeds the preset dual cold source coordination evaluation threshold, it indicates that the cabin temperature control performance is poor overall and the coordination performance of the dual cold source refrigeration module is poor, then a low coordination signal is generated; if the dual cold source coordination evaluation value PX does not exceed the preset dual cold source coordination evaluation threshold, it indicates that the cabin temperature control performance is good overall and the coordination performance of the dual cold source refrigeration module is good, then a low coordination signal is generated.

[0046] Embodiment 2: Figure 2 As shown, the difference between this embodiment and embodiment 1 is that the dual cold source coordination evaluation module is communicatively connected to the dual cold source abnormal diagnosis module, the dual cold source coordination evaluation module sends a low coordination signal or a high coordination signal to the dual cold source abnormal diagnosis module, and the dual cold source abnormal diagnosis module is used to set a detection period, preferably, the detection period is forty days; and the operating status of the dual cold source refrigeration module within the detection period is evaluated, and a diagnosis failure signal or a diagnosis qualification signal is generated through analysis;

[0047] And send the diagnosis failure signal or diagnosis pass signal to the user interaction interface module, so that the interaction interface module issues a corresponding warning when receiving the diagnosis failure signal. When the management personnel receive the warning, they conduct cause investigation and analysis and historical operation tracing, and promptly inspect and repair the dual cold source refrigeration module to ensure the subsequent cabin cooling effect and the safe and stable operation of the dual cold source refrigeration module. The specific operation process of the dual cold source abnormal diagnosis module is as follows:

[0048] The number of times the low matching signal is generated within the detection cycle is obtained and marked as a low matching detection value, and the low matching detection value is numerically compared with a preset low matching detection threshold. If the low matching detection value exceeds the preset low matching detection threshold, it indicates that the cabin cooling performance within the detection cycle is poor and the operation of the dual cold source refrigeration module is unstable, and a diagnosis failure signal is generated;

[0049] If the low matching detection value does not exceed the preset low matching detection threshold, when the cold source control module issues a corresponding instruction to adjust the working states of the two refrigeration cycles, it is determined whether the two refrigeration cycles complete the corresponding adjustment within the corresponding prescribed time. If the corresponding refrigeration cycle does not complete the corresponding adjustment within the corresponding prescribed time, the control symbol KF-1 is allocated to the corresponding refrigeration cycle;

[0050] The number of times the corresponding refrigeration cycle is assigned the control symbol KF-1 within the detection period is obtained and marked as a refrigeration control abnormal detection value, and the refrigeration control abnormal detection value is numerically compared with a preset refrigeration control abnormal detection threshold. If the refrigeration control abnormal detection value exceeds the preset refrigeration control abnormal detection threshold, the corresponding refrigeration cycle is marked as an abnormal cycle; if an abnormal cycle exists, a diagnosis failure signal is generated;

[0051] If there is no abnormal cycle, the refrigeration control abnormality detection values ​​of the two refrigeration cycles are averaged to obtain the refrigeration control abnormality value, and the low matching detection value WN and the refrigeration control abnormality value WY are numerically calculated by the formula WF=hp1*WN+hp2*WY to obtain the refrigeration abnormal diagnosis value WF; wherein, the values ​​of hp1 and hp2 are both positive numbers, and hp1 and hp2 are preset weight coefficients; and, the larger the value of the refrigeration abnormal diagnosis value WF is, the worse the cabin cooling performance is in the detection period, and the worse the operating condition of the dual cold source refrigeration module is.

[0052] The refrigeration abnormal diagnosis value WF is numerically compared with the preset refrigeration abnormal diagnosis threshold. If the refrigeration abnormal diagnosis value WF exceeds the preset refrigeration abnormal diagnosis threshold, it indicates that the cabin cooling performance during the detection period is poor, the operating condition of the dual cold source refrigeration module is poor, and there is a high possibility of abnormality, then a diagnosis failure signal is generated; if the refrigeration abnormal diagnosis value WF does not exceed the preset refrigeration abnormal diagnosis threshold, it indicates that the operating condition of the dual cold source refrigeration module during the detection period is good, then a diagnosis pass signal is generated.

[0053] Embodiment 3: Figure 2 As shown, the difference between this embodiment and embodiment 1 and embodiment 2 is that the dual cold source abnormality diagnosis module is communicatively connected to the dual cold source maintenance management module, the dual cold source abnormality diagnosis module sends a diagnosis failure signal to the dual cold source maintenance management module, and the dual cold source maintenance management module generates a maintenance abnormality signal or a maintenance qualified signal through maintenance management analysis when receiving the diagnosis failure signal;

[0054] And the maintenance abnormality signal or maintenance qualified signal is sent to the user interaction interface module. When the user interaction interface module receives the maintenance abnormality signal, it issues a corresponding warning, which can reasonably analyze and accurately judge the potential relationship between the diagnosis abnormality of the dual cold source refrigeration module and the personnel maintenance management factors, and strengthen the subsequent maintenance management and maintenance personnel supervision training when receiving the corresponding warning, so as to further ensure the subsequent cabin cooling effect and the safe and stable operation of the dual cold source refrigeration module; the specific analysis process of maintenance management analysis is as follows:

[0055] The number of times the management personnel perform maintenance on the dual-cold-source refrigeration module within the detection period is collected and marked as the cold-source maintenance value, and the time when the dual-cold-source refrigeration module is maintained is marked as the cold-source maintenance time, and the interval between two adjacent groups of cold-source maintenance times is marked as the cold-source maintenance interval time, and the cold-source maintenance interval time is numerically compared with the preset cold-source maintenance interval time threshold. If the cold-source maintenance interval time exceeds the preset cold-source maintenance interval time threshold, the corresponding cold-source maintenance interval time is marked as an excessive interval time, and the number of excessive interval times within the detection period is marked as the cold-source excessive interval detection value;

[0056] And the single maintenance time (i.e., the interval between the maintenance start time and the maintenance end time) of the dual cold source refrigeration module is collected, and the single maintenance time is compared with the preset single maintenance time threshold. If the single maintenance time does not exceed the preset single maintenance time threshold, it indicates that the maintenance time of the corresponding maintenance process is short, then the corresponding single maintenance time is marked as an out-of-dimensional time, and the number of out-of-dimensional time in the detection period is marked as a cold source out-of-dimensional detection value;

[0057] By formula The cold source maintenance value LX, the cold source over-interval detection value LP and the cold source different-dimensional detection value LW are numerically calculated to obtain the cold source maintenance value LK, wherein mt1, mt2 and mt3 are preset proportional coefficients with values ​​greater than zero, and the larger the value of the cold source maintenance value LK is, the worse the maintenance status of the dual cold source refrigeration module is during the detection period, and the more it is necessary to strengthen the maintenance management of the dual cold source refrigeration module and the supervision training of maintenance personnel in the subsequent period;

[0058] The cold source maintenance value LK is numerically compared with the preset cold source maintenance threshold. If the cold source maintenance value LK exceeds the preset cold source maintenance threshold, it indicates that the maintenance condition of the dual cold source refrigeration module during the detection period is poor overall, and maintenance supervision needs to be strengthened in the future, then a maintenance abnormality signal is generated; if the cold source maintenance value LK does not exceed the preset cold source maintenance threshold, it indicates that the maintenance condition of the dual cold source refrigeration module during the detection period is good overall, then a maintenance qualified signal is generated.

[0059] The working principle of the present invention is as follows: when in use, the cabin temperature is monitored in real time through the cabin temperature detection module, the cold source control module calculates the refrigeration capacity that needs to be adjusted according to the preset temperature control strategy, and sends a control instruction to the dual cold source refrigeration module to adjust the working status of the two refrigeration cycles, so as to realize the precise control of the cabin temperature and improve the operation efficiency and stability of the cabin equipment. The dual cold source refrigeration module is used to analyze the temperature regulation performance of the cabin through the dual cold source coordination evaluation module, and the coordination performance of the two refrigeration cycles is judged. When a low coordination signal is generated, the user interaction interface module sends a corresponding early warning, which can accurately judge the temperature control status of the cabin in real time and make corresponding adjustment measures in time, so as to ensure the cooling effect in the cabin and the safety of the items in the cabin, and has a high degree of intelligence.

[0060] The above formulas are all dimensionless and numerical calculations. The formula is a formula obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The preset parameters in the formula are set by technicians in this field according to actual conditions. The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can understand and use the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A dual-cold source refrigeration system for cabin cooling, characterized in that: It includes a cabin temperature detection module, a cold source control module, a dual cold source refrigeration module, a dual cold source coordination evaluation module and a user interaction interface module; The cabin temperature detection module is used to monitor the cabin temperature in real time and send the collected cabin temperature data to the cold source control module; The cold source control module receives the cabin temperature data sent by the cabin temperature detection module, and calculates the refrigeration capacity to be adjusted according to the preset temperature control strategy, and accordingly sends a control instruction to the dual cold source refrigeration module to adjust the working state of the two refrigeration cycles; The user interaction interface module is used to display the temperature data in the cabin and the operating status information of the dual cold source refrigeration module, and provides a user operation interface to allow the user to set the temperature control strategy and view historical data; The dual cold source coordination evaluation module is used to analyze the temperature regulation performance of the dual cold source refrigeration module in the cabin, judge the coordination performance of the two refrigeration cycles, and generate a high coordination signal or a low coordination signal accordingly, and send the high coordination signal or the low coordination signal to the user interaction interface module. When the user interaction interface module receives the low coordination signal, it issues a corresponding warning; The two refrigeration cycles of the dual-cold source refrigeration module are independent of each other, and each refrigeration cycle includes a compressor, a condenser, a throttle valve and an evaporator. During operation, the compressor compresses the refrigerant into a high-temperature and high-pressure gas, which is then sent to the condenser for condensation to form a high-temperature and high-pressure liquid. The high-temperature and high-pressure liquid enters the evaporator after being throttled by the throttle valve, absorbs heat through heat exchange with the air in the cabin, and evaporates into a low-temperature and low-pressure gas, which then returns to the compressor for the next cycle. The specific operation process of the dual cold source coordination evaluation module is as follows: The cabin temperature data is obtained, and the cabin temperature data is numerically compared with the preset cabin temperature data range. If the cabin temperature data is not within the preset cabin temperature data range, it is determined that the dual-cold source refrigeration module is in a non-optimal coordination state; when the dual-cold source refrigeration module is determined to be in a non-optimal coordination state, the timing is started until the cabin temperature data is within the preset cabin temperature data range, and the non-optimal coordination time is obtained accordingly; Obtain all the non-optimal durations of coordination within a unit time and sum them up to obtain a coordination inferior time value, compare the coordination inferior time value with a preset coordination inferior time threshold, and generate a low coordination signal if the coordination inferior time value exceeds the preset coordination inferior time threshold; If the coordination inferior time value does not exceed the preset coordination inferior time threshold, the coordination non-optimal duration is compared with the preset coordination non-optimal duration threshold. If the coordination non-optimal duration exceeds the preset coordination non-optimal duration threshold, the corresponding coordination non-optimal duration is marked as an excessive duration. The number of over-range durations in a unit time is obtained and marked as a non-optimal detection value, and the value exceeding the preset non-optimal duration threshold is marked as an over-value, and the average of all over-values ​​in a unit time is calculated to obtain a non-optimal over-value. The dual cold source coordination evaluation value is obtained by numerically calculating the coordination inferior value, the coordination non-optimal detection value and the coordination non-optimal excess value, and the dual cold source coordination evaluation value is numerically compared with the preset dual cold source coordination evaluation threshold. If the dual cold source coordination evaluation value exceeds the preset dual cold source coordination evaluation threshold, a low coordination signal is generated; if the dual cold source coordination evaluation value does not exceed the preset dual cold source coordination evaluation threshold, a low coordination signal is generated.

2. The dual-cold-source refrigeration system for cabin cooling according to claim 1, characterized in that: The dual cold source coordination evaluation module is communicatively connected to the dual cold source abnormal diagnosis module. The dual cold source coordination evaluation module sends a low coordination signal or a high coordination signal to the dual cold source abnormal diagnosis module. The dual cold source abnormal diagnosis module is used to set a detection cycle and evaluate the operating status of the dual cold source refrigeration module within the detection cycle. A diagnosis failure signal or a diagnosis success signal is generated through analysis, and the diagnosis failure signal or the diagnosis success signal is sent to the user interaction interface module, so as to issue a corresponding warning when the interaction interface module receives the diagnosis failure signal.

3. The dual cold source refrigeration system for cabin cooling according to claim 2, characterized in that: The specific operation process of the dual cold source abnormal diagnosis module is as follows: The number of times the low fit signal is generated within the detection cycle is obtained and marked as a low fit detection value, and the low fit detection value is numerically compared with a preset low fit detection threshold. If the low fit detection value exceeds the preset low fit detection threshold, a diagnosis failure signal is generated.

4. The dual cold source refrigeration system for cabin cooling according to claim 3 is characterized in that: If the low matching detection value does not exceed the preset low matching detection threshold, when the cold source control module issues a corresponding instruction to adjust the working states of the two refrigeration cycles, it is determined whether the two refrigeration cycles complete the corresponding adjustment within the corresponding prescribed time. If the corresponding refrigeration cycle does not complete the corresponding adjustment within the corresponding prescribed time, the control symbol KF-1 is allocated to the corresponding refrigeration cycle; The number of times the corresponding refrigeration cycle is assigned the control symbol KF-1 during the detection period is obtained and marked as the refrigeration control abnormal detection value, and the refrigeration control abnormal detection value is numerically compared with the preset refrigeration control abnormal detection threshold. If the refrigeration control abnormal detection value exceeds the preset refrigeration control abnormal detection threshold, the corresponding refrigeration cycle is marked as an abnormal cycle; if an abnormal cycle exists, a diagnosis failure signal is generated.

5. The dual cold source refrigeration system for cabin cooling according to claim 4, characterized in that: If there is no abnormal cycle, the refrigeration control abnormality detection values ​​of the two refrigeration cycles are averaged to obtain the refrigeration control abnormality value, and the low matching detection value and the refrigeration control abnormality value are numerically calculated to obtain the refrigeration abnormal diagnosis value, and the refrigeration abnormal diagnosis value is numerically compared with the preset refrigeration abnormal diagnosis threshold value. If the refrigeration abnormal diagnosis value exceeds the preset refrigeration abnormal diagnosis threshold value, a diagnosis failure signal is generated; If the refrigeration abnormal diagnosis value does not exceed the preset refrigeration abnormal diagnosis threshold, a diagnosis pass signal is generated.

6. The dual cold source refrigeration system for cabin cooling according to claim 2, characterized in that: The dual cold source abnormality diagnosis module is communicatively connected to the dual cold source maintenance management module. The dual cold source abnormality diagnosis module sends a diagnosis failure signal to the dual cold source maintenance management module. When the dual cold source maintenance management module receives the diagnosis failure signal, it generates a maintenance abnormality signal or a maintenance qualified signal through maintenance management analysis, and sends the maintenance abnormality signal or the maintenance qualified signal to the user interaction interface module. When the user interaction interface module receives the maintenance abnormality signal, it issues a corresponding warning.

7. The dual-cold-source refrigeration system for cabin cooling according to claim 6, characterized in that: The specific analysis process of maintenance management analysis is as follows: The number of times the management personnel perform maintenance on the dual-cold-source refrigeration module within the detection period is collected and marked as the cold-source maintenance value, and the time when the dual-cold-source refrigeration module is maintained is marked as the cold-source maintenance time, and the interval between two adjacent groups of cold-source maintenance times is marked as the cold-source maintenance interval time, and the cold-source maintenance interval time is numerically compared with the preset cold-source maintenance interval time threshold. If the cold-source maintenance interval time exceeds the preset cold-source maintenance interval time threshold, the corresponding cold-source maintenance interval time is marked as an excessive interval time, and the number of excessive interval times within the detection period is marked as the cold-source excessive interval detection value; And the single maintenance time for the dual cold source refrigeration module is collected, and the single maintenance time is compared with the preset single maintenance time threshold. If the single maintenance time does not exceed the preset single maintenance time threshold, the corresponding single maintenance time is marked as an out-of-dimensional time, and the number of out-of-dimensional time in the detection period is marked as a cold source out-of-dimensional detection value; The cold source maintenance value is obtained by numerically calculating the cold source maintenance value, the cold source over-interval detection value and the cold source out-of-dimensional detection value, and the cold source maintenance value is numerically compared with the preset cold source maintenance threshold. If the cold source maintenance value exceeds the preset cold source maintenance threshold, a maintenance abnormality signal is generated; if the cold source maintenance value does not exceed the preset cold source maintenance threshold, a maintenance qualification signal is generated.

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