Temperature control method and system for mixing recycled asphalt mixture

Abstract

The present invention discloses a temperature control method and system for mixing recycled asphalt mixtures. The method comprises: obtaining a first mixture temperature of a first layer of a mixing device within a preset time period in the future, and a second mixture temperature of a second layer of the mixing device within a preset time period in the future, and constructing a first mixture temperature sequence and a second mixture temperature sequence; updating the first mixture temperature sequence and the second mixture temperature sequence respectively; determining a first temperature inflection point moment in a first target mixture temperature sequence, and determining a second temperature inflection point moment in a second target mixture temperature sequence, and defining the time period between the first temperature inflection point moment and the second temperature inflection point moment as a temperature inflection point time interval. This achieves more accurate temperature management of mixtures at different levels of the mixing device, while avoiding mixture quality defects caused by overcooling, and effectively preventing performance degradation of RAP due to overheating as much as possible.

Description

Technical Field

[0001] The present invention belongs to the technical field of regenerated asphalt mixture stirring, and in particular relates to a temperature control method and system for regenerated asphalt mixture stirring. Background Art

[0002] The mixing of recycled asphalt mixture generally involves mixing the warm mix regeneration agent with recycled asphalt mixture (RAP) evenly, and then adding asphalt to mix. This can reduce the time for mixing the regeneration agent and warm mix agent separately, thereby effectively improving production efficiency.

[0003] During the mixing process of adding new asphalt, the RAP in the mixing equipment will experience a brief drop in temperature, which may cause the recycled asphalt mixture to overcool. To address this problem, the RAP is usually continuously heated while adding new asphalt. Although this method can maintain the temperature within the preset temperature range, it may cause the RAP to overheat for a short period of time, causing further aging of the RAP and reducing the performance of the recycled asphalt. Therefore, a temperature control method and system for the mixing of recycled asphalt mixtures is urgently needed. Summary of the Invention

[0004] The present invention provides a temperature control method and system for mixing recycled asphalt mixture, which is used to solve the technical problem that RAP may be overheated in a short period of time, resulting in further aging of RAP.

[0005] In a first aspect, the present invention provides a temperature control method for stirring a recycled asphalt mixture, comprising:

[0006] Acquire the current temperature of the first mixed material in the first layer of the stirring device, and the current temperature of the second mixed material in the second layer of the stirring device within the preset time period;

[0007] determining whether a first difference between the current temperature of the first mixture and the current temperature of the second mixture is greater than a first preset threshold;

[0008] If the first difference is greater than a first preset threshold, obtaining a first mixed material temperature of a first layer of the mixing device within a future preset time period, and a second mixed material temperature of a second layer of the mixing device within the future preset time period, and constructing a first mixed material temperature sequence and a second mixed material temperature sequence;

[0009] According to a preset temperature selection strategy, the first mixture temperature sequence and the second mixture temperature sequence are updated respectively to obtain a first target mixture temperature sequence and a second target mixture temperature sequence;

[0010] Determining a first temperature inflection point moment in the first target mixture temperature sequence, and determining a second temperature inflection point moment in the second target mixture temperature sequence, and defining a time period between the first temperature inflection point moment and the second temperature inflection point moment as a temperature inflection point time interval;

[0011] According to the temperature inflection point time period, a preset heating rule is used to perform a first temperature control on the first mixed material in the first layer of the stirring device, and a second temperature control is performed on the second mixed material in the second layer of the stirring device.

[0012] In a second aspect, the present invention provides a temperature control system for mixing recycled asphalt mixture, comprising:

[0013] a first acquisition module configured to acquire a current temperature of the first mixed material on the first layer of the stirring device and a current temperature of the second mixed material on the second layer of the stirring device within the preset time period;

[0014] a judgment module configured to judge whether a first difference between the current temperature of the first mixture and the current temperature of the second mixture is greater than a first preset threshold;

[0015] a second acquisition module configured to acquire, if the first difference is greater than a first preset threshold, a first mixture temperature of a first layer of the mixing device within a future preset time period and a second mixture temperature of a second layer of the mixing device within the future preset time period, and construct a first mixture temperature sequence and a second mixture temperature sequence;

[0016] An updating module is configured to update the first mixture temperature sequence and the second mixture temperature sequence according to a preset temperature selection strategy to obtain a first target mixture temperature sequence and a second target mixture temperature sequence;

[0017] a determining module configured to determine a first temperature inflection point moment in the first target mixture temperature sequence, and determine a second temperature inflection point moment in the second target mixture temperature sequence, and define a time period between the first temperature inflection point moment and the second temperature inflection point moment as a temperature inflection point time interval;

[0018] The control module is configured to perform a first temperature control on the first mixed material in the first layer of the stirring device and a second temperature control on the second mixed material in the second layer of the stirring device using a preset heating rule according to the temperature inflection point time period.

[0019] According to a third aspect, an electronic device is provided, comprising: at least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can perform the steps of the temperature control method for mixing recycled asphalt mixture according to any embodiment of the present invention.

[0020] In a fourth aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon. When the program instructions are executed by a processor, the processor is caused to execute the steps of the temperature control method for mixing recycled asphalt mixture of any embodiment of the present invention.

[0021] The temperature control method and system for mixing recycled asphalt mixture of the present application determine the first temperature inflection point moment in the first target mixture temperature sequence, and determine the second temperature inflection point moment in the second target mixture temperature sequence, and define the time period between the first temperature inflection point moment and the second temperature inflection point moment as the temperature inflection point time interval; according to the temperature inflection point time period, a preset heating rule is used to perform a first temperature control on the first mixture in the first layer of the mixing equipment, and a second temperature control is performed on the second mixture in the second layer of the mixing equipment, thereby achieving more accurate temperature management of the mixtures at different levels of the mixing equipment, while avoiding mixture quality defects caused by overcooling, and preventing the performance degradation of RAP due to overheating as effectively as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 This is a flow chart of a temperature control method for mixing recycled asphalt mixture provided by one embodiment of the present invention;

[0024] Figure 2 This is a structural block diagram of a temperature control system for regenerated asphalt mixture mixing provided by one embodiment of the present invention;

[0025] Figure 3 It is a structural diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] See also Figure 1 , which shows a flow chart of a temperature control method for mixing recycled asphalt mixture of the present application.

[0028] like Figure 1 As shown, the temperature control method for mixing recycled asphalt mixture specifically includes the following steps:

[0029] Step S101 , obtaining the current temperature of the first mixed material in the first layer of the stirring device and the current temperature of the second mixed material in the second layer of the stirring device within the preset time period.

[0030] In one embodiment, the stirring device is arranged in two layers, namely, a first layer and a second layer. Heating pipes or water cooling pipes can be installed around the stirring device, and the heating method can be set to microwave heating or hot air circulation heating. Temperature adjustment can be achieved by separately controlling the heating pipes or water cooling pipes of the first and second layers.

[0031] In this step, the current temperature of the first mixed material is the temperature of the mixed material in the first layer of the stirring device at the time of cooling; the current temperature of the second mixed material is the temperature of the mixed material in the second layer of the stirring device at the time of cooling.

[0032] Step S102: determining whether a first difference between the current temperature of the first mixture and the current temperature of the second mixture is greater than a first preset threshold.

[0033] By determining whether the first difference between the current temperature of the first mixture and the current temperature of the second mixture is greater than a first preset threshold, the time to add the cold material can be effectively identified. If the cold material is not added, simple heating and cooling methods can be used to control the temperature. When the cold material is added, using direct heating can maintain the temperature within the preset temperature range, but it may cause the RAP to overheat for a short period of time, causing further aging of the RAP and reducing the performance of the regenerated asphalt. Therefore, the determination method of step S102 can relatively automatically determine the time to add the cold material, thereby facilitating the execution of the temperature control method of steps S103-S106.

[0034] In a specific embodiment, if the first difference is not greater than the first preset threshold value, it is determined whether the current temperature of the first mixture and the current temperature of the second mixture are within the preset temperature range; if the current temperature of the first mixture and the current temperature of the second mixture are both within the preset temperature range, there is no need to perform temperature control on the first mixture in the first layer of the stirring equipment and the second mixture in the second layer of the stirring equipment; if the current temperature of the first mixture or the current temperature of the second mixture is not within the preset temperature range, the temperature of the first mixture in the first layer of the stirring equipment or the second mixture in the second layer of the stirring equipment is controlled until the temperature of the first mixture in the first layer of the stirring equipment is within the preset temperature range, or the temperature of the second mixture in the second layer of the stirring equipment is within the preset temperature range, wherein temperature control includes heating control and cooling control.

[0035] Step S103: If the first difference is greater than a first preset threshold, obtain the first mixture temperature of the first layer of the mixing equipment within a future preset time period, and the second mixture temperature of the second layer of the mixing equipment within the future preset time period, and construct a first mixture temperature sequence and a second mixture temperature sequence.

[0036] In this step, the first mixture temperature at each moment is sorted based on the chronological order to obtain a first mixture temperature sequence, and the second mixture temperature at each moment is sorted based on the chronological order to obtain a second mixture temperature sequence.

[0037] Step S104 : updating the first mixture temperature sequence and the second mixture temperature sequence respectively according to a preset temperature selection strategy to obtain a first target mixture temperature sequence and a second target mixture temperature sequence.

[0038] In this step, the first target mixture temperature sequence is divided into at least one first target mixture temperature subsequence according to the value of the first target mixture temperature, wherein the number of first target mixture temperatures with the same temperature value in a certain first target mixture temperature subsequence is greater than a preset number threshold, or the number of first target mixture temperatures with temperature values decreasing in chronological order in a certain first target mixture temperature subsequence is greater than a preset number threshold; a first target mixture temperature with a temperature value greater than two adjacent first target mixture temperatures in at least one first target mixture temperature subsequence is defined as an abnormal first target mixture temperature, wherein the two adjacent first target mixture temperatures are two first target mixture temperatures arranged before and after a certain first target mixture temperature; all abnormal first mixture temperatures are removed, and at least one first target mixture temperature subsequence after removing the abnormal first mixture temperature is spliced based on chronological order to obtain a first target mixture temperature sequence.

[0039] Similarly, the second target mixture temperature sequence can be obtained, specifically: the second target mixture temperature sequence is divided into at least one second target mixture temperature subsequence according to the value of the second target mixture temperature, wherein the number of second target mixture temperatures with the same temperature value in a certain second target mixture temperature subsequence is greater than a preset number threshold, or the number of second target mixture temperatures with temperature values decreasing in chronological order in a certain second target mixture temperature subsequence is greater than a preset number threshold; a second target mixture temperature in at least one second target mixture temperature subsequence whose temperature value is greater than two adjacent second target mixture temperatures is defined as an abnormal second target mixture temperature, wherein the two adjacent second target mixture temperatures are two second target mixture temperatures that are sorted before and after a certain second target mixture temperature; all abnormal second mixture temperatures are removed, and at least one second target mixture temperature subsequence after removing the abnormal second mixture temperature is spliced based on chronological order to obtain the second target mixture temperature sequence.

[0040] After adding the cold material, the temperature of the first layer of the mixed material will continue to drop for a period of time. However, in the actual temperature collection process, local cold spots may cause inaccurate temperature collection. Therefore, it is necessary to remove the incorrect temperature value to facilitate the subsequent step S105 to cut off the temperature inflection point.

[0041] For example, the temperature of the mixture in the first layer collected at the first moment is 130℃, the temperature collected at the second moment is 135℃, the temperature collected at the third moment is 130℃, the temperature collected at the fourth moment is 125℃, the temperature collected at the fifth moment is 120℃, the temperature collected at the sixth moment is 125℃, the temperature collected at the seventh moment is 115℃, the temperature collected at the eighth moment is 110℃, the temperature collected at the ninth moment is 110℃ and the temperature collected at the tenth moment is 100℃.

[0042] According to the values of each first target mixture temperature, it is divided into a first target mixture temperature subsequence A (sorted as: first moment, second moment and third moment) and a first target mixture temperature subsequence B (sorted as: fourth moment, fifth moment, sixth moment, seventh moment, eighth moment, ninth moment and tenth moment).

[0043] The temperature collected at the second moment is greater than the temperature collected at the first and third moments, so the temperature collected at the second moment is defined as an abnormal temperature. Furthermore, the temperature collected at the sixth moment is greater than the temperature collected at the fifth and seventh moments, so the temperature collected at the sixth moment is also defined as an abnormal temperature. These abnormal temperatures are removed, and the first target mixture temperature subsequence A and the first target mixture temperature subsequence B, after removing the abnormal first mixture temperature, are concatenated in chronological order to obtain the first target mixture temperature sequence.

[0044] Step S105: determining a first temperature inflection point in the first target mixture temperature sequence and a second temperature inflection point in the second target mixture temperature sequence, and defining the time period between the first temperature inflection point and the second temperature inflection point as a temperature inflection point time interval.

[0045] In the step, a preset sliding window is slid on the first target mixture temperature sequence, and at each sliding, it is determined whether the second difference between a first target mixture temperature and another first target mixture temperature in the sliding window is greater than a second preset threshold, wherein the sliding distance of the sliding window is one first target mixture temperature, the length of the sliding window is two first target mixture temperatures, and the sliding direction of the sliding window is from the first target mixture temperature with an earlier collection time to the first target mixture temperature with a later collection time; if the second difference is greater than the second preset threshold, the sliding is stopped, and the collection time corresponding to a certain first target mixture temperature is defined as the first temperature inflection point time, wherein the collection time corresponding to a certain first target mixture temperature is earlier than the collection time corresponding to another first target mixture temperature.

[0046] In a specific embodiment, if the second difference is not greater than the second preset threshold, the judgment is continued as to whether the second difference between the two target mixture temperatures in the next sliding window is greater than the second preset threshold until the judgment of all sliding windows is completed; if the second difference between the two target mixture temperatures in all sliding windows is not greater than the second preset threshold, the collection moment corresponding to the first first target mixture temperature in the first target mixture temperature sequence is defined as the first temperature inflection point moment.

[0047] It should be noted that the first first target mixture temperature is the first target mixture temperature ranked first in the first target mixture temperature sequence.

[0048] Similarly, the second temperature inflection point moment can be determined in the second target mixture temperature sequence. Specifically, a preset sliding window is slid on the second target mixture temperature sequence. During each sliding, it is determined whether the second difference between a second target mixture temperature and another second target mixture temperature in the sliding window is greater than a second preset threshold value, wherein the sliding distance of the sliding window is one second target mixture temperature, the length of the sliding window is two second target mixture temperatures, and the sliding direction of the sliding window is from the second target mixture temperature with an earlier collection time to the second target mixture temperature with a later collection time; if the second difference is greater than the second preset threshold value, the sliding is stopped, and the collection time corresponding to a certain second target mixture temperature is defined as the second temperature inflection point moment, wherein the collection time corresponding to a certain second target mixture temperature is earlier than the collection time corresponding to another second target mixture temperature.

[0049] Step S106 , performing a first temperature control on the first mixed material in the first layer of the stirring device and performing a second temperature control on the second mixed material in the second layer of the stirring device according to the temperature inflection point time period using a preset heating rule.

[0050] In this step, a first mixture temperature that reaches a second preset threshold is selected from the first mixture temperature sequence based on chronological order, and a time corresponding to the first mixture temperature is obtained. A determination is made as to whether a target time interval between the first temperature inflection point time and the certain time is greater than the temperature inflection point time interval. If the target time interval is greater than the temperature inflection point time interval, a first control instruction is generated at the certain time to heat the first mixture in the first layer of the mixing device, thereby performing a first temperature control on the first mixture in the first layer of the mixing device. The heating time length contained in the first stabilization control instruction is equal to the temperature inflection point time interval. A second control instruction is generated at another time to heat the second mixture in the second layer of the mixing device, thereby performing a second temperature control on the second mixture in the first layer of the mixing device. The other time interval is a time interval after the certain time interval and the temperature inflection point time interval. If the target time interval is not greater than the temperature inflection point time interval, a third control instruction is generated at the certain time to heat the first mixture in the first layer of the mixing device, thereby performing a first temperature control on the first mixture in the first layer of the mixing device. The heating time length contained in the third control instruction is equal to the target time interval.

[0051] It should be noted that the second preset threshold value is greater than the lowest temperature value in the preset temperature range. In this way, it is possible to avoid as much as possible that the mixed material in the first layer directly drops below the preset temperature range during the addition of the cold material, thereby avoiding as much as possible that the mixed material in the first layer is overcooled.

[0052] In this embodiment, by determining whether the target time interval between the first temperature inflection point and a certain moment is greater than the temperature inflection point time interval, it is possible to more accurately distinguish whether the current temperature is dropping faster to the second preset threshold or the temperature is transferring faster from the first layer to the second layer. If the target time interval is greater than the temperature inflection point time interval, it indicates that the temperature is likely transferring faster from the first layer to the second layer. Therefore, when heating the first layer of the mixture, the temperature of the second layer of the mixture will also gradually rise significantly. At this time, if the second layer of the mixture is directly heated, the temperature increase caused by the temperature transfer and the direct heating may easily cause the second layer of the mixture to overheat. Therefore, setting the temperature inflection point time interval as the heating duration, or setting the target time interval as the heating duration, can ensure that the temperature of the second layer of the mixture remains within the preset temperature range when directly heating the second layer of the mixture, thereby reducing the possibility of RAP overheating in a short period of time.

[0053] In summary, the method of the present application determines the first temperature inflection point moment in the first target mixture temperature sequence, and determines the second temperature inflection point moment in the second target mixture temperature sequence, and defines the time period between the first temperature inflection point moment and the second temperature inflection point moment as the temperature inflection point time interval; according to the temperature inflection point time period, a preset heating rule is used to perform a first temperature control on the first mixture in the first layer of the mixing equipment, and a second temperature control is performed on the second mixture in the second layer of the mixing equipment, thereby achieving more accurate temperature management of the mixtures at different levels of the mixing equipment, while avoiding quality defects of the mixture caused by overcooling, and preventing the performance degradation of RAP due to overheating as effectively as possible.

[0054] See also Figure 2 , which shows a structural block diagram of a temperature control system for mixing recycled asphalt mixture of the present application.

[0055] like Figure 2 As shown, the temperature control system 200 includes a first acquisition module 210 , a judgment module 220 , a second acquisition module 230 , an update module 240 , a determination module 250 and a control module 260 .

[0056] Among them, the first acquisition module 210 is configured to obtain the current temperature of the first mixture of the first layer of the stirring device at the cold material moment, and the current temperature of the second mixture of the second layer of the stirring device within the preset time period, wherein the cold material moment is the moment when the raw materials are added to the stirring device; the judgment module 220 is configured to judge whether the first difference between the current temperature of the first mixture and the current temperature of the second mixture is greater than a first preset threshold; the second acquisition module 230 is configured to obtain the first mixture temperature of the first layer of the stirring device within a future preset time period and the second mixture temperature of the second layer of the stirring device within the future preset time period if the first difference is greater than the first preset threshold, and construct a first mixture temperature sequence and a second mixture temperature sequence; the update module 2 40, configured to update the first mixture temperature sequence and the second mixture temperature sequence respectively according to a preset temperature selection strategy to obtain a first target mixture temperature sequence and a second target mixture temperature sequence; a determination module 250, configured to determine a first temperature inflection point moment in the first target mixture temperature sequence, and to determine a second temperature inflection point moment in the second target mixture temperature sequence, and define the time period between the first temperature inflection point moment and the second temperature inflection point moment as a temperature inflection point time interval; a control module 260, configured to perform a first temperature control on the first mixture in the first layer of the stirring device and perform a second temperature control on the second mixture in the second layer of the stirring device according to the temperature inflection point time period using a preset heating rule.

[0057] It should be understood that Figure 2 Modules and references documented in Figure 1 Therefore, the operations and features described above for the method and the corresponding technical effects also apply to Figure 2 The modules in it will not be described in detail here.

[0058] In other embodiments, embodiments of the present invention further provide a computer-readable storage medium having a computer program stored thereon, wherein when the program instructions are executed by a processor, the processor is caused to execute the temperature control method for mixing recycled asphalt mixture in any of the above method embodiments;

[0059] As an embodiment, the computer-readable storage medium of the present invention stores computer-executable instructions, and the computer-executable instructions are configured as follows:

[0060] Obtaining the current temperature of the first mixed material in the first layer of the stirring device at the cold material moment, and the current temperature of the second mixed material in the second layer of the stirring device within the preset time period, wherein the cold material moment is the moment when the raw materials are added to the stirring device;

[0061] determining whether a first difference between the current temperature of the first mixture and the current temperature of the second mixture is greater than a first preset threshold;

[0062] If the first difference is greater than a first preset threshold, obtaining a first mixed material temperature of a first layer of the mixing device within a future preset time period, and a second mixed material temperature of a second layer of the mixing device within the future preset time period, and constructing a first mixed material temperature sequence and a second mixed material temperature sequence;

[0063] According to a preset temperature selection strategy, the first mixture temperature sequence and the second mixture temperature sequence are updated respectively to obtain a first target mixture temperature sequence and a second target mixture temperature sequence;

[0064] Determining a first temperature inflection point moment in the first target mixture temperature sequence, and determining a second temperature inflection point moment in the second target mixture temperature sequence, and defining a time period between the first temperature inflection point moment and the second temperature inflection point moment as a temperature inflection point time interval;

[0065] According to the temperature inflection point time period, a preset heating rule is used to perform a first temperature control on the first mixed material in the first layer of the stirring device, and a second temperature control is performed on the second mixed material in the second layer of the stirring device.

[0066] The computer-readable storage medium may include a program storage area and a data storage area. The program storage area may store an operating system and application programs required for at least one function; the data storage area may store data generated based on the use of the temperature control system for regenerated asphalt mixing. Furthermore, the computer-readable storage medium may include high-speed random access memory and may also include storage, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, the computer-readable storage medium may optionally include storage remote from the processor. Such remote storage may be connected to the temperature control system for regenerated asphalt mixing via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0067] Figure 3 Schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. Figure 3 As shown, the device includes: a processor 310 and a memory 320. The electronic device may also include: an input device 330 and an output device 340. The processor 310, the memory 320, the input device 330 and the output device 340 may be connected via a bus or other means. Figure 3The example of a bus connection is shown. Memory 320 is the aforementioned computer-readable storage medium. Processor 310 executes the various server functional applications and data processing by running the non-volatile software programs, instructions, and modules stored in memory 320, thereby implementing the temperature control method for regenerated asphalt mixing described in the aforementioned method embodiment. Input device 330 can receive input digital or character information and generate key signal input related to user settings and function control of the temperature control system for regenerated asphalt mixing. Output device 340 may include a display device such as a display screen.

[0068] The electronic device can execute the method provided by the embodiment of the present invention, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not fully described in this embodiment, please refer to the method provided by the embodiment of the present invention.

[0069] As an embodiment, the electronic device is applied to a temperature control system for mixing recycled asphalt mixtures, and is used on a client, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to:

[0070] Obtaining the current temperature of the first mixed material in the first layer of the stirring device at the cold material moment, and the current temperature of the second mixed material in the second layer of the stirring device within the preset time period, wherein the cold material moment is the moment when the raw materials are added to the stirring device;

[0071] determining whether a first difference between the current temperature of the first mixture and the current temperature of the second mixture is greater than a first preset threshold;

[0072] If the first difference is greater than a first preset threshold, obtaining a first mixed material temperature of a first layer of the mixing device within a future preset time period, and a second mixed material temperature of a second layer of the mixing device within the future preset time period, and constructing a first mixed material temperature sequence and a second mixed material temperature sequence;

[0073] According to a preset temperature selection strategy, the first mixture temperature sequence and the second mixture temperature sequence are updated respectively to obtain a first target mixture temperature sequence and a second target mixture temperature sequence;

[0074] Determining a first temperature inflection point moment in the first target mixture temperature sequence, and determining a second temperature inflection point moment in the second target mixture temperature sequence, and defining a time period between the first temperature inflection point moment and the second temperature inflection point moment as a temperature inflection point time interval;

[0075] According to the temperature inflection point time period, a preset heating rule is used to perform a first temperature control on the first mixed material in the first layer of the stirring device, and a second temperature control is performed on the second mixed material in the second layer of the stirring device.

[0076] Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented using software plus a necessary general-purpose hardware platform, or of course, hardware. Based on this understanding, the essence of the above technical solution, or the portion 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, a magnetic disk, or an optical disk, and includes a number of instructions for causing a computer device (such as a personal computer, server, or network device) to execute the methods of each embodiment or certain portions of the embodiments.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A temperature control method for stirring recycled asphalt mixture, characterized in that: include: Obtaining the current temperature of the first mixed material in the first layer of the mixing equipment and the current temperature of the second mixed material in the second layer of the mixing equipment within a preset time period; determining whether a first difference between the current temperature of the first mixture and the current temperature of the second mixture is greater than a first preset threshold; If the first difference is greater than a first preset threshold, obtaining a first mixed material temperature of a first layer of the mixing device within a future preset time period, and a second mixed material temperature of a second layer of the mixing device within the future preset time period, and constructing a first mixed material temperature sequence and a second mixed material temperature sequence; According to a preset temperature selection strategy, the first mixture temperature sequence and the second mixture temperature sequence are updated respectively to obtain a first target mixture temperature sequence and a second target mixture temperature sequence; Determining a first temperature inflection point moment in the first target mixture temperature sequence, and determining a second temperature inflection point moment in the second target mixture temperature sequence, and defining a time period between the first temperature inflection point moment and the second temperature inflection point moment as a temperature inflection point time interval; According to the temperature inflection point time period, a preset heating rule is used to perform a first temperature control on the first mixed material in the first layer of the stirring device, and a second temperature control is performed on the second mixed material in the second layer of the stirring device.

2. The temperature control method for stirring a recycled asphalt mixture according to claim 1, characterized in that: in, The current temperature of the first mixed material is: the temperature of the mixed material in the first layer of the stirring device at the time of cold material; The current temperature of the second mixed material is: the temperature of the mixed material in the second layer of the stirring equipment at the time of cold material.

3. The temperature control method for stirring a recycled asphalt mixture according to claim 1, characterized in that: After determining whether a first difference between the current temperature of the first mixture and the current temperature of the second mixture is greater than a first preset threshold, the method further includes: If the first difference is not greater than a first preset threshold, determining whether the current temperature of the first mixture and the current temperature of the second mixture are within a preset temperature range respectively; If the current temperature of the first mixed material and the current temperature of the second mixed material are both within the preset temperature range, there is no need to control the temperature of the first mixed material in the first layer of the stirring device and the second mixed material in the second layer of the stirring device; If the current temperature of the first mixture or the current temperature of the second mixture is not within the preset temperature range, the temperature of the first mixture in the first layer of the stirring device or the second mixture in the second layer of the stirring device is controlled until the temperature of the first mixture in the first layer of the stirring device is within the preset temperature range, or the temperature of the second mixture in the second layer of the stirring device is within the preset temperature range, wherein the temperature control includes heating control and cooling control.

4. The temperature control method for stirring a recycled asphalt mixture according to claim 1, characterized in that: The constructing of the first mixture temperature sequence and the second mixture temperature sequence comprises: The first mixture temperature at each moment is sorted based on the chronological order to obtain a first mixture temperature sequence, and the second mixture temperature at each moment is sorted based on the chronological order to obtain a second mixture temperature sequence.

5. The temperature control method for stirring a recycled asphalt mixture according to claim 1, characterized in that: in, The first mixture temperature sequence is updated according to a preset temperature selection strategy to obtain a first target mixture temperature sequence, specifically including: Dividing the first target mixture temperature sequence into at least one first target mixture temperature subsequence according to the values of the first target mixture temperature, wherein the number of first target mixture temperatures having the same temperature value in a certain first target mixture temperature subsequence is greater than a preset number threshold, or the number of first target mixture temperatures having temperature values descending in chronological order in a certain first target mixture temperature subsequence is greater than a preset number threshold; A first target mixture temperature in the at least one first target mixture temperature subsequence having a temperature value greater than two adjacent first target mixture temperatures is defined as an abnormal first target mixture temperature, wherein the two adjacent first target mixture temperatures are two first target mixture temperatures that are arranged before and after the first target mixture temperature; All abnormal first mixture material temperatures are removed, and at least one first target mixture material temperature subsequence after the abnormal first mixture material temperature is removed is spliced based on the time sequence to obtain a first target mixture material temperature sequence.

6. The temperature control method for stirring a recycled asphalt mixture according to claim 1, characterized in that: Determining the first temperature inflection point in the first target mixture temperature sequence includes: Sliding a preset sliding window on the first target mixture temperature sequence, and determining during each sliding operation whether a second difference between a first target mixture temperature and another first target mixture temperature in the sliding window is greater than a second preset threshold, wherein the sliding distance of the sliding window is one first target mixture temperature, the length of the sliding window is two first target mixture temperatures, and the sliding direction of the sliding window is from the first target mixture temperature collected earlier to the first target mixture temperature collected later; If the second difference is greater than a second preset threshold, sliding is stopped, and the collection time corresponding to the certain first target mixture temperature is defined as the first temperature inflection point time, wherein the collection time corresponding to the certain first target mixture temperature is earlier than the collection time corresponding to another first target mixture temperature.

7. The temperature control method for stirring a recycled asphalt mixture according to claim 6, characterized in that: After determining whether a second difference between a first target mixture temperature and another first target mixture temperature in the sliding window is greater than a second preset threshold, the method further includes: If the second difference is not greater than the second preset threshold, continue to determine whether the second difference between the two target mixture temperatures in the next sliding window is greater than the second preset threshold until all sliding windows are determined; If the second difference between the two target mixture temperatures in all sliding windows is not greater than the second preset threshold, the collection moment corresponding to the first first target mixture temperature in the first target mixture temperature sequence is defined as the first temperature inflection point moment.

8. The temperature control method for stirring recycled asphalt mixture according to claim 1, characterized in that: The step of controlling the first temperature of the first mixed material in the first layer of the stirring device using a preset heating rule according to the temperature inflection point time period, and controlling the second temperature of the second mixed material in the second layer of the stirring device by a second temperature control comprises: Selecting a first mixture material temperature that reaches a second preset threshold value in the first mixture material temperature sequence based on a chronological order, and obtaining a moment corresponding to the first mixture material temperature; Determining whether a target time interval between the first temperature inflection point moment and the certain moment is greater than the temperature inflection point time interval; If the target time interval is greater than the temperature inflection point time interval, generating a first control instruction for heating the first mixed material in the first layer of the stirring device at the certain moment, so as to perform a first temperature control on the first mixed material in the first layer of the stirring device, wherein the heating time length included in the first stabilization control instruction is equal to the temperature inflection point time interval; At another moment, a second control instruction is generated to heat the second mixture of the second layer of the stirring device to perform a second temperature control on the second mixture of the first layer of the stirring device, wherein the other moment is a moment separated from the temperature inflection point by a time interval after the certain moment.

9. The temperature control method for stirring recycled asphalt mixture according to claim 8, characterized in that: After determining whether the target time interval between the first temperature inflection point moment and the certain moment is greater than the temperature inflection point time interval, the method further includes: If the target time interval is not greater than the temperature inflection point time interval, a third control instruction for heating the first mixture of the first layer of the stirring device is generated at the certain moment to perform a first temperature control on the first mixture of the first layer of the stirring device, and the heating time length contained in the third control instruction is equal to the target time interval.

10. A temperature control system for mixing recycled asphalt mixture, characterized in that: include: a first acquisition module configured to acquire a current temperature of the first mixed material in the first layer of the stirring device and a current temperature of the second mixed material in the second layer of the stirring device within the time period; a judgment module configured to judge whether a first difference between the current temperature of the first mixture and the current temperature of the second mixture is greater than a first preset threshold; a second acquisition module configured to acquire, if the first difference is greater than a first preset threshold, a first mixture temperature of a first layer of the mixing device within a future preset time period and a second mixture temperature of a second layer of the mixing device within the future preset time period, and construct a first mixture temperature sequence and a second mixture temperature sequence; An updating module is configured to update the first mixture temperature sequence and the second mixture temperature sequence according to a preset temperature selection strategy to obtain a first target mixture temperature sequence and a second target mixture temperature sequence; a determining module configured to determine a first temperature inflection point moment in the first target mixture temperature sequence, and determine a second temperature inflection point moment in the second target mixture temperature sequence, and define a time period between the first temperature inflection point moment and the second temperature inflection point moment as a temperature inflection point time interval; The control module is configured to perform a first temperature control on the first mixed material in the first layer of the stirring device and a second temperature control on the second mixed material in the second layer of the stirring device using a preset heating rule according to the temperature inflection point time period.

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