Lightweight aggregate concrete production volume weight control method, device, equipment and medium
By collecting and automatically adjusting the supplementary amount of light aggregates in real time during concrete mixing, the problems of difficult preparation of light aggregate concrete and waste of resources are solved, and the stable control of concrete weight and the improvement of production efficiency are achieved.
Patent Information
- Application Number
- CN202510106609.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-04-22
AI Technical Summary
In the prior art, the preparation of light aggregate concrete is difficult. It usually requires multiple adjustments to the concrete mix ratio design parameters to achieve the target bulk weight value, and the adjustment process consumes a lot of manpower and material resources.
By collecting the bulk weight value in real time during concrete mixing, and automatically adjusting the supplementary amount of light aggregate according to the target bulk weight value until the bulk weight value reaches the error range of the target value. The method includes using a bulk weight measurement device to collect the bulk weight value, calculating the amount of light aggregate to be supplemented by a PID algorithm, and stirring in a mixer.
It realizes stable control of concrete volume weight, optimizes the use of light aggregate, reduces resource waste, and improves production efficiency, ensuring that the quality of concrete products meets design standards.
Smart Images
Figure CN119858237A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of concrete production, and in particular to a method, device, equipment and medium for controlling the bulk density of lightweight aggregate concrete production. Background Art
[0002] Bulk density refers to the mass of concrete per unit volume. In lightweight aggregate concrete, due to the use of lightweight aggregates (such as expanded perlite, foamed concrete aggregate, etc.), the bulk density of concrete is usually lower than that of traditional ordinary concrete. The bulk density directly affects the density and overall strength of concrete.
[0003] Bulk density has a direct impact on the fluidity, pumpability and workability of concrete. Too low or too high a bulk density may affect the workability of concrete. For example, too low a bulk density may make the concrete too loose, resulting in pumping difficulties or surface treatment problems; while too high a bulk density may make the concrete too viscous, increasing construction difficulties.
[0004] However, the preparation of lightweight aggregate concrete in the existing technology is difficult. Usually, it is still difficult to achieve the target bulk density after adjusting the concrete mix design parameters multiple times according to JGJ / T 12-2019 "Technical Standard for the Application of Lightweight Aggregate Concrete", and the adjustment process requires a lot of manpower and material resources.
[0005] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention
[0006] The present invention provides a method, device, equipment and medium for controlling the bulk density of lightweight aggregate concrete production, thereby effectively solving the problems in the background technology.
[0007] In order to achieve the above object, the technical solution adopted by the present invention is: a method for controlling the bulk density of lightweight aggregate concrete production, comprising the following steps:
[0008] During the concrete mixing process, the concrete bulk density is collected;
[0009] Compare the collected bulk density value with the target bulk density value, and calculate the weight of the lightweight aggregate to be supplemented according to the difference between the collected bulk density value and the target bulk density value;
[0010] The calculated weight of light aggregate is input into the mixer for mixing. After the mixing reaches the set time, the steps of collecting the bulk density value and calculating the weight of the light aggregate to be supplemented are repeated until the collected bulk density value reaches the error range of the target bulk density value;
[0011] The final mix ratio is calculated based on the original mix ratio and the weight of the lightweight aggregate added cumulatively.
[0012] Furthermore, during the concrete mixing process, collecting the bulk density of the concrete includes:
[0013] Control the concrete to flow into the bulk density measuring cylinder to measure the bulk density value;
[0014] After measuring the bulk density value, the concrete in the bulk density measuring cylinder is input into the mixer again.
[0015] Furthermore, the calculation of the weight of the lightweight aggregate to be supplemented includes:
[0016] Determine the bulk density value that needs to be supplemented based on the difference between the collected bulk density value and the target bulk density value;
[0017] Calculate the weight of the lightweight aggregate that needs to be supplemented based on the bulk density value that needs to be supplemented, the weight of the concrete in the mixer, the collected bulk density value, and the density of the lightweight aggregate.
[0018] Further, the determination of the bulk density value that needs to be supplemented comprises the following steps:
[0019] The weight of the supplementary lightweight aggregate is calculated using the PID algorithm and the target bulk density:
[0020]
[0021] In the formula, U(t) is the bulk density that needs to be supplemented, K p , K i , K d are the proportional, integral and differential gain coefficients respectively; e(t) is the error of the current bulk density, that is, the difference between the target bulk density value and the current measured bulk density value.
[0022] Furthermore, when collecting the bulk density of concrete, the sampling is performed at a fixed sampling time interval, and the bulk density value that needs to be supplemented is:
[0023]
[0024] Wherein, u(k) is the weight of lightweight aggregate to be supplemented calculated at the kth collection, e(k) is the difference between the current bulk density and the target bulk density at the kth collection, e(k-1) is the difference between the bulk density and the target bulk density at the k-1th collection, T is the sampling time interval, e(i) is the difference between the current bulk density and the target bulk density at the ith collection, and i is 0 to k.
[0025] The present invention also includes a lightweight aggregate concrete production bulk density control device, using the above method, the device comprises:
[0026] A collection unit is used to collect the bulk density value of concrete during the concrete mixing process;
[0027] A light aggregate weight calculation unit is used to compare the collected bulk density value with the target bulk density value, and calculate the weight of the light aggregate to be supplemented according to the difference between the collected bulk density value and the target bulk density value;
[0028] The bulk density control unit is used to input the calculated weight of the light aggregate into the mixer for mixing. After the mixing reaches a set time, the steps of collecting the bulk density value and calculating the weight of the light aggregate to be supplemented are repeated until the collected bulk density value reaches the error range of the target bulk density value.
[0029] The proportion calculation unit is used to calculate the final proportion based on the original proportion and the weight of the light aggregate added cumulatively.
[0030] The present invention also includes a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method described above is implemented.
[0031] The present invention also includes a storage medium on which a computer program is stored. When the computer program is executed by a processor, the method described above is implemented.
[0032] The beneficial effects of the present invention are as follows: during the concrete mixing process, the bulk density value of the concrete is collected in real time using a bulk density measuring device. The bulk density value represents the mass of concrete per unit volume and is an important indicator for judging the quality and mix ratio of concrete. By real-time monitoring of the bulk density and automatically adjusting the amount of lightweight aggregate added according to the target bulk density value, the bulk density of the concrete is ensured to be stable within the target range. Through continuous iterative adjustment and final mix ratio calculation, it is ensured that the produced concrete meets the design requirements, while optimizing the use of lightweight aggregate and reducing resource waste. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0034] Figure 1 is a flow chart of the method of the present invention;
[0035] Figure 2 It is a structural schematic diagram of the device of the present invention;
[0036] Figure 3 It is a schematic diagram of the structure of the computer device of the present invention. DETAILED DESCRIPTION
[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0038] like Figure 1 As shown: A method for controlling the bulk density of lightweight aggregate concrete production, comprising the following steps:
[0039] During the concrete mixing process, the concrete bulk density is collected;
[0040] Compare the collected bulk density value with the target bulk density value, and calculate the weight of the lightweight aggregate to be supplemented according to the difference between the collected bulk density value and the target bulk density value;
[0041] The calculated weight of light aggregate is input into the mixer for mixing. After the mixing reaches the set time, the steps of collecting the bulk density value and calculating the weight of the light aggregate to be supplemented are repeated until the collected bulk density value reaches the error range of the target bulk density value;
[0042] The final mix ratio is calculated based on the original mix ratio and the weight of the lightweight aggregate added cumulatively.
[0043] During the concrete mixing process, the bulk density of concrete is collected in real time using bulk density measuring equipment. This bulk density represents the mass of concrete per unit volume and is an important indicator for judging the quality and mix ratio of concrete. By real-time monitoring of the bulk density and automatically adjusting the amount of lightweight aggregate added according to the target bulk density value, the bulk density of concrete is ensured to be stable within the target range. Through continuous iterative adjustments and final mix ratio calculations, the produced concrete is ensured to meet the design requirements, while the use of lightweight aggregate is optimized and resource waste is reduced.
[0044] In this embodiment, during the concrete mixing process, the bulk density of the concrete is collected, including:
[0045] Control the concrete to flow into the bulk density measuring cylinder to measure the bulk density value;
[0046] After measuring the bulk density value, the concrete in the bulk density measuring cylinder is input into the mixer again.
[0047] During the concrete mixing process, the control system adjusts the inflow of concrete so that the concrete flows into the bulk density measuring cylinder (such as a 1L standard bulk density measuring cylinder) for bulk density measurement. Once the bulk density value measurement is completed, the concrete in the bulk density measuring cylinder needs to be re-input into the mixer to ensure the accuracy of the calculation. After the bulk density measurement result is fed back to the central control system, the system will calculate the amount of lightweight aggregate that needs to be added based on the difference between the target bulk density value and the current bulk density value, and continue with subsequent feeding and mixing operations until the bulk density value reaches within the error range of the target value.
[0048] The weight of lightweight aggregate to be supplemented is calculated as follows:
[0049] Determine the bulk density value that needs to be supplemented based on the difference between the collected bulk density value and the target bulk density value;
[0050] Calculate the weight of the lightweight aggregate that needs to be supplemented based on the bulk density value that needs to be supplemented, the weight of the concrete in the mixer, the collected bulk density value, and the density of the lightweight aggregate.
[0051] As a preferred embodiment of the above, determining the bulk density value to be supplemented includes the following steps:
[0052] The weight of the supplementary lightweight aggregate is calculated using the PID algorithm and the target bulk density:
[0053]
[0054] In the formula, U(t) is the bulk density that needs to be supplemented, K p , K i , K d are the proportional, integral and differential gain coefficients respectively; e(t) is the error of the current bulk density, that is, the difference between the target bulk density value and the current measured bulk density value.
[0055] PID (Proportional-Integral-Derivative) controller is a feedback control algorithm widely used in automated control systems. It automatically adjusts the behavior of the controlled object by adjusting the proportional, integral and differential coefficients. In the control of the bulk density of lightweight aggregate concrete, PID control can effectively correct the deviation of the concrete bulk density to ensure that it reaches the set target value. The bulk density control method based on PID can achieve high-precision and automated bulk density control in lightweight aggregate concrete production. Through real-time feedback and dynamic correction, PID control not only improves production efficiency, but also ensures that the quality of the final concrete product meets the design standards. The implementation of this method will greatly optimize the production process, reduce raw material waste, and improve product performance and consistency.
[0056] In this embodiment, when collecting the bulk density value of concrete, the sampling is performed at a fixed sampling time interval, and the bulk density value that needs to be supplemented is:
[0057]
[0058] Wherein, u(k) is the weight of lightweight aggregate to be supplemented calculated at the kth collection, e(k) is the difference between the current bulk density and the target bulk density at the kth collection, e(k-1) is the difference between the bulk density and the target bulk density at the k-1th collection, T is the sampling time interval, e(i) is the difference between the current bulk density and the target bulk density at the i-th collection, and i is 0 to k.
[0059] When the acquisition of bulk density values is discrete rather than continuous real-time data, we need to make appropriate adjustments to the PID controller to adapt it to the characteristics of discrete data. Usually, for discrete time control systems, we use a discrete PID controller, which changes the PID control formula to a form suitable for discrete time steps. The discrete PID control method can effectively control the bulk density in lightweight aggregate concrete production, even if the data is collected discretely. By dynamically adjusting the amount of lightweight aggregate added, PID control can ensure that the bulk density accurately reaches the target value and maintain the stability of the production process.
[0060] like Figure 2 As shown, this embodiment also includes a lightweight aggregate concrete production bulk density control device, using the above method, the device includes:
[0061] A collection unit is used to collect the bulk density value of concrete during the concrete mixing process;
[0062] A light aggregate weight calculation unit is used to compare the collected bulk density value with the target bulk density value, and calculate the weight of the light aggregate to be supplemented according to the difference between the collected bulk density value and the target bulk density value;
[0063] The bulk density control unit is used to input the calculated weight of the light aggregate into the mixer for mixing. After the mixing reaches a set time, the steps of collecting the bulk density value and calculating the weight of the light aggregate to be supplemented are repeated until the collected bulk density value reaches the error range of the target bulk density value.
[0064] The proportion calculation unit is used to calculate the final proportion based on the original proportion and the weight of the light aggregate added cumulatively.
[0065] During the concrete mixing process, the bulk density of concrete is collected in real time using bulk density measuring equipment. This bulk density represents the mass of concrete per unit volume and is an important indicator for judging the quality and mix ratio of concrete. By real-time monitoring of the bulk density and automatically adjusting the amount of lightweight aggregate added according to the target bulk density value, the bulk density of concrete is ensured to be stable within the target range. Through continuous iterative adjustments and final mix ratio calculations, the produced concrete is ensured to meet the design requirements, while the use of lightweight aggregate is optimized and resource waste is reduced.
[0066] See also Figure 3 A computer device 400 provided in an embodiment of the present application includes: a processor 410 and a memory 420, wherein the memory 420 stores a computer program executable by the processor 410, and when the computer program is executed by the processor 410, the above method is executed.
[0067] The embodiment of the present application further provides a storage medium 430 on which a computer program is stored. When the computer program is run by the processor 410, the above method is executed.
[0068] Among them, the storage medium 430 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable red-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, disk or optical disk.
[0069] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.
[0070] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.
[0072] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.
[0073] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.
[0074] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.
[0075] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.
[0076] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A method for controlling bulk density of lightweight aggregate concrete production, characterized in that: The steps include: During the concrete mixing process, the concrete bulk density is collected; Compare the collected bulk density value with the target bulk density value, and calculate the weight of the lightweight aggregate to be supplemented according to the difference between the collected bulk density value and the target bulk density value; The calculated weight of light aggregate is input into the mixer for mixing. After the mixing reaches the set time, the steps of collecting the bulk density value and calculating the weight of the light aggregate to be supplemented are repeated until the collected bulk density value reaches the error range of the target bulk density value; The final mix ratio is calculated based on the original mix ratio and the weight of the lightweight aggregate added cumulatively.
2. The method for controlling bulk density of lightweight aggregate concrete production according to claim 1, characterized in that: During the concrete mixing process, the bulk density of the concrete is collected, including: Control the concrete to flow into the bulk density measuring cylinder to measure the bulk density value; After measuring the bulk density value, the concrete in the bulk density measuring cylinder is input into the mixer again.
3. The method for controlling bulk density of lightweight aggregate concrete production according to claim 1, characterized in that: The weight of lightweight aggregate required for the calculation includes: Determine the bulk density value that needs to be supplemented based on the difference between the collected bulk density value and the target bulk density value; Calculate the weight of the lightweight aggregate that needs to be supplemented based on the bulk density value that needs to be supplemented, the weight of the concrete in the mixer, the collected bulk density value, and the density of the lightweight aggregate.
4. The method for controlling bulk density of lightweight aggregate concrete production according to claim 1, characterized in that: Determining the bulk density value that needs to be supplemented comprises the following steps: The weight of the supplementary lightweight aggregate is calculated using the PID algorithm and the target bulk density: In the formula, U(t) is the bulk density that needs to be supplemented, K p , K i , K d are the proportional, integral and differential gain coefficients respectively; e(t) is the error of the current bulk density, that is, the difference between the target bulk density value and the current measured bulk density value.
5. The method for controlling bulk density of lightweight aggregate concrete production according to claim 4, characterized in that: When collecting the bulk density of concrete, the samples are collected at fixed sampling time intervals. The bulk density values that need to be supplemented are: Wherein, u(k) is the weight of lightweight aggregate to be supplemented calculated at the kth collection, e(k) is the difference between the current bulk density and the target bulk density at the kth collection, e(k-1) is the difference between the bulk density and the target bulk density at the k-1th collection, T is the sampling time interval, e(i) is the difference between the current bulk density and the target bulk density at the ith collection, and i is 0 to k.
6. A lightweight aggregate concrete production bulk density control device, characterized in that: Using the method according to any one of claims 1 to 5, the device comprises: A collection unit is used to collect the bulk density value of concrete during the concrete mixing process; A light aggregate weight calculation unit is used to compare the collected bulk density value with the target bulk density value, and calculate the weight of the light aggregate to be supplemented according to the difference between the collected bulk density value and the target bulk density value; The bulk density control unit is used to input the calculated weight of the light aggregate into the mixer for mixing. After the mixing reaches a set time, the steps of collecting the bulk density value and calculating the weight of the light aggregate to be supplemented are repeated until the collected bulk density value reaches the error range of the target bulk density value. The proportion calculation unit is used to calculate the final proportion based on the original proportion and the weight of the light aggregate added cumulatively.
7. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 5 is implemented.
8. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.