Dynamic compensation method, system, equipment and storage medium for mixer truck transportation

Abstract

The present application provides a dynamic compensation method, system, equipment and storage medium for mixer truck transportation, which relates to the field of concrete engineering technology. The method includes: receiving concrete demand information sent by a user end, the demand information includes the target water-cement ratio of concrete and the construction site; generating a transportation route of the mixer truck according to the construction site, and obtaining the ambient temperature and road condition information of the transportation route; determining the first water-cement ratio of the concrete based on the target water-cement ratio in combination with the ambient temperature and road condition information; obtaining the rotation speed of the mixing drum on the mixer truck, adjusting the first water-cement ratio according to the rotation speed, and determining the second water-cement ratio of the concrete; sending the second water-cement ratio to the control system of the mixing station, so that the control system controls the mixing station to put the concrete into the mixing drum according to the second water-cement ratio for mixing and transportation. The technical effect of the present application is to ensure that the concrete transported to the construction site meets the expected performance indicators and meets the construction requirements.

Description

Technical Field

[0001] The present application relates to the field of concrete engineering technology, and in particular to a dynamic compensation method, system, equipment and storage medium for mixer truck transportation. Background Art

[0002] As the main material in construction, concrete is usually transported by mixer trucks. During transportation, the water-cement ratio of concrete will change due to factors such as ambient temperature and road conditions, resulting in a decrease in concrete performance.

[0003] In the prior art, the above problem is usually solved by adjusting the initial water-cement ratio of concrete at the mixing station, that is, pre-compensating the concrete ratio according to empirical values. However, due to the dynamic changes in the ambient temperature and road conditions of the transportation route, it is often difficult to accurately grasp the compensation amount by relying solely on empirical values ​​for static compensation, which can easily lead to problems such as under-compensation or over-compensation, resulting in the concrete transported to the construction site failing to meet the expected performance indicators and construction requirements. Summary of the invention

[0004] The present application provides a dynamic compensation method, system, equipment and storage medium for mixer truck transportation, which are used to ensure that concrete transported to the construction site meets expected performance indicators and meets construction requirements.

[0005] In a first aspect, the present application provides a dynamic compensation method for mixer truck transportation, the method comprising: receiving concrete demand information sent by a user terminal, the demand information comprising a target water-cement ratio of concrete and a construction site; generating a transportation route for the mixer truck according to the construction site, and obtaining ambient temperature and road condition information of the transportation route; determining a first water-cement ratio of concrete based on the target water-cement ratio in combination with the ambient temperature and the road condition information; obtaining the rotation speed of a mixing drum on the mixer truck, adjusting the first water-cement ratio according to the rotation speed, and determining a second water-cement ratio of concrete; and sending the second water-cement ratio to a control system of a mixing station, so that the control system controls the mixing station to put concrete into the mixing drum for mixing and transportation according to the second water-cement ratio.

[0006] By adopting the above technical solution, by receiving the construction site information and generating the transportation route, the target water-cement ratio is initially compensated in combination with the ambient temperature and road condition information of the transportation route to obtain the first water-cement ratio, and then the second water-cement ratio is obtained by secondary compensation according to the mixing drum speed, thus realizing dynamic and accurate compensation of the concrete water-cement ratio. This solution not only considers the influence of transportation environmental factors, but also uses the mixing drum speed as a compensation parameter, making the compensation process more accurate and controllable, effectively avoiding the problem of under-compensation or over-compensation, and ensuring that the concrete transported to the construction site meets the expected performance indicators and construction requirements.

[0007] Optionally, based on the target water-cement ratio, the first water-cement ratio of concrete is determined in combination with the ambient temperature and the road condition information, including: predicting the driving time of the mixer truck to reach the construction site according to the road condition information, and determining the road condition disturbance coefficient of the transportation route, wherein the road condition disturbance coefficient decreases with the increase of the road surface flatness of the transportation route; calculating the evaporation of concrete water in combination with the ambient temperature and the driving time; determining the degree of concrete segregation according to the road condition disturbance coefficient; based on the target water-cement ratio, the first water-cement ratio of concrete is determined in combination with the evaporation of concrete water and the degree of concrete segregation.

[0008] By adopting the above technical solution, by predicting the driving time and introducing the road condition disturbance coefficient, the two influencing factors of water evaporation caused by ambient temperature and concrete segregation caused by road conditions can be quantified respectively. Among them, the road condition disturbance coefficient is inversely proportional to the road surface flatness, which can accurately reflect the degree of influence of road conditions on concrete segregation. By incorporating the two key parameters of water evaporation and segregation degree into the calculation process of the first water-cement ratio, accurate evaluation and compensation of concrete performance changes during transportation are achieved, and the accuracy of water-cement ratio adjustment is improved.

[0009] Optionally, determining the degree of concrete segregation based on the road condition disturbance coefficient includes: when the road condition disturbance coefficient is greater than a first preset disturbance threshold, determining that the degree of concrete segregation is severe segregation; when the road condition disturbance coefficient is greater than a second preset disturbance threshold and not greater than the first preset disturbance threshold, determining that the degree of concrete segregation is moderate segregation; when the road condition disturbance coefficient is not greater than the second preset disturbance threshold, determining that the degree of concrete segregation is mild segregation, and the first preset disturbance threshold is greater than the second preset disturbance threshold.

[0010] By adopting the above technical solution, by setting the first preset disturbance threshold and the second preset disturbance threshold, the concrete segregation degree is divided into three levels: severe, moderate and mild, and the graded judgment of the road condition disturbance coefficient is realized. This classification mechanism enables the system to take corresponding compensation measures according to different degrees of segregation, avoids the ambiguity of segregation degree judgment, provides a reliable basis for the subsequent precise adjustment of the water-cement ratio, and further improves the accuracy and pertinence of dynamic compensation.

[0011] Optionally, the first water-cement ratio of concrete is determined based on the target water-cement ratio in combination with the evaporation of concrete water and the degree of segregation of concrete, including: when the degree of segregation of concrete is severe segregation, obtaining a first compensating water consumption corresponding to the severe segregation from a water-cement ratio compensation database, increasing the benchmark water consumption corresponding to the target water-cement ratio by the evaporation of concrete water and then subtracting the first compensating water consumption to obtain a first water consumption, and dividing the first water consumption by the benchmark cement consumption corresponding to the target water-cement ratio to obtain the first water-cement ratio of concrete; when the degree of segregation of concrete is moderate segregation, obtaining a second compensating water consumption corresponding to the moderate segregation from a water-cement ratio compensation database, increasing the benchmark water consumption corresponding to the target water-cement ratio by the evaporation of concrete water and then subtracting the first compensating water consumption to obtain a first water consumption. The second water amount is obtained by adding the evaporation amount of concrete water to the target water-cement ratio and then subtracting the second compensation water amount, and the second water amount is divided by the cement benchmark amount corresponding to the target water-cement ratio to obtain the first water-cement ratio of the concrete; when the degree of segregation of the concrete is slight segregation, the third compensation water amount corresponding to the slight segregation is obtained from the water-cement ratio compensation database, the benchmark water amount corresponding to the target water-cement ratio is increased by the evaporation amount of concrete water and then subtracted from the third compensation water amount to obtain the third water amount, and the third water amount is divided by the cement benchmark amount corresponding to the target water-cement ratio to obtain the first water-cement ratio of the concrete; wherein the first compensation water amount is greater than the second compensation water amount, and the second compensation water amount is greater than the third compensation water amount.

[0012] By adopting the above technical solution, the corresponding compensation water consumption is obtained from the water-cement ratio compensation database according to different degrees of segregation, and a decreasing relationship between the first, second and third compensation water consumption is established, corresponding to the severity of the segregation degree. By taking the evaporation of concrete water and the compensation water consumption as the addition and subtraction items respectively, the benchmark water consumption corresponding to the target water-cement ratio is accurately adjusted, and then the first water-cement ratio is calculated in combination with the cement benchmark dosage, which realizes the differentiated compensation of concrete performance under different segregation conditions, making the compensation effect more accurate and controllable, and effectively avoiding the problem of over- or under-compensation.

[0013] Optionally, adjusting the first water-cement ratio according to the rotational speed to determine the second water-cement ratio of the concrete includes: obtaining the driving time of the mixer truck to reach the construction site; determining the moisture loss of the concrete in combination with the driving time and the rotational speed; while keeping the cement amount corresponding to the first water-cement ratio unchanged, adding the water amount corresponding to the first water-cement ratio to the moisture loss of the concrete to obtain the compensated water amount; dividing the compensated water amount by the cement amount corresponding to the first water-cement ratio to determine the second water-cement ratio of the concrete.

[0014] By adopting the above technical solution, the water loss of concrete is calculated by taking the mixing drum speed and driving time as parameters. Under the premise of keeping the cement dosage unchanged, the water loss is added to the water consumption corresponding to the first water-cement ratio to obtain the water consumption after compensation, and then the second water-cement ratio is determined. This compensation mechanism takes into account the impact of the mixing process on the water content of concrete, making the adjustment of the water-cement ratio more comprehensive and accurate, effectively solving the possible shortcomings of compensation based solely on environmental and road conditions, and further improving the quality assurance capability during concrete transportation.

[0015] Optionally, the determining of the amount of moisture loss of concrete by combining the driving time and the rotational speed includes: selecting a moisture loss coefficient corresponding to the rotational speed from a moisture loss database; and arithmetically multiplying the driving time by the selected moisture loss coefficient to obtain the amount of moisture loss of concrete.

[0016] By adopting the above technical solution, a moisture loss database is established to store the moisture loss coefficients corresponding to different speeds, and the selected moisture loss coefficients are arithmetically multiplied by the driving time to achieve quantitative calculation of the moisture loss of concrete. This database-based calculation method simplifies the moisture loss evaluation process, while ensuring the accuracy and reliability of the calculation results, providing effective support for the accurate determination of the second water-cement ratio.

[0017] Optionally, after sending the second water-cement ratio to the control system of the mixing station, it also includes: acquiring a video image captured by a monitoring camera installed on the mixer truck; identifying the rotation state of the mixer drum and abnormal behavior in the water adding area of ​​the mixer truck based on the video image; when it is identified that the rotation state of the mixer drum is an abnormal state and / or there is abnormal behavior in the water adding area of ​​the mixer truck, generating a warning message.

[0018] By adopting the above technical solution, the rotation state of the mixing drum and the water adding area of ​​the mixer truck are monitored in real time through the monitoring camera, and the abnormal state and behavior are discovered in time by combining the video image recognition technology, and then the early warning information is generated. This real-time monitoring and early warning mechanism can not only detect abnormal conditions during the operation of the mixer truck in time, but also effectively prevent illegal operations such as artificial water addition, thereby providing a full range of quality monitoring guarantees for the concrete transportation process and ensuring that the water-cement ratio adjustment plan is accurately implemented.

[0019] In a second aspect, the present application provides a dynamic compensation system for mixer truck transportation, the system comprising: a receiving module, a generating module, a combining module, an adjusting module and an output module; wherein the receiving module is used to receive concrete demand information sent by a user terminal, the demand information comprising a target water-cement ratio of concrete and a construction site; the generating module is used to generate a transportation route of the mixer truck according to the construction site, and obtain the ambient temperature and road condition information of the transportation route; the combining module is used to determine a first water-cement ratio of concrete based on the target water-cement ratio in combination with the ambient temperature and the road condition information; the adjusting module is used to obtain the rotational speed of the mixing drum on the mixer truck, adjust the first water-cement ratio according to the rotational speed, and determine a second water-cement ratio of the concrete; the output module is used to send the second water-cement ratio to the control system of the mixing station, so that the control system controls the mixing station to put concrete into the mixing drum for mixing and transportation according to the second water-cement ratio.

[0020] In the third aspect, the present application provides an electronic device, adopting the following technical solution: including a processor, a memory, a user interface and a network interface, the memory is used to store instructions, the user interface and the network interface are used to communicate with other devices, and the processor is used to execute the instructions stored in the memory so that the electronic device executes a computer program such as any of the above-mentioned dynamic compensation methods for mixer truck transportation.

[0021] In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution: a computer program that can be loaded by a processor and execute any of the above-mentioned dynamic compensation methods for mixer truck transportation is stored.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] By receiving construction site information and generating a transportation route, the target water-cement ratio is initially compensated in combination with the ambient temperature and road condition information of the transportation route to obtain the first water-cement ratio, and then secondary compensation is performed according to the mixing drum speed to obtain the second water-cement ratio, thus achieving dynamic and accurate compensation of the concrete water-cement ratio. This solution not only takes into account the impact of transportation environmental factors, but also uses the mixing drum speed as a compensation parameter, making the compensation process more accurate and controllable, effectively avoiding the problem of under-compensation or over-compensation, and ensuring that the concrete transported to the construction site meets the expected performance indicators and construction requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic flow chart of a dynamic compensation method for mixer truck transportation provided in an embodiment of the present application;

[0025] Figure 2It is a structural schematic diagram of a dynamic compensation system for mixer truck transportation provided in an embodiment of the present application;

[0026] Figure 3 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0027] Description of the reference numerals: 1000, electronic device; 1001, processor; 1002, communication bus; 1003, user interface; 1004, network interface; 1005, memory. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0029] In the description of the embodiments of the present application, words such as "illustrative", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "illustrative", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "illustrative", "for example" or "for example" is intended to present related concepts in a concrete way.

[0030] Figure 1 1 is a flow chart of a dynamic compensation method for mixer truck transportation provided by an embodiment of the present application. Figure 1 As shown, the method includes S101-S105:

[0031] S101, receiving concrete demand information sent by a user terminal, where the demand information includes a target water-cement ratio of the concrete and a construction site.

[0032] In the specific implementation, the control system of the mixing station receives the concrete demand information sent by the construction party through the mobile terminal or computer through the network communication module. The demand information includes the target water-cement ratio of the concrete and the construction site. Among them, the target water-cement ratio is the initial ratio parameter determined according to the engineering design requirements, which is directly related to the strength and working performance of the concrete; the construction site information includes the detailed geographical coordinates or specific address of the construction site, which is the basic data for the subsequent planning of the transportation route.

[0033] After receiving the demand information, the control system of the mixing station stores it in the system database and uses it as an important reference for subsequent control of concrete quality. Receiving demand information in this way can not only accurately record the specific requirements of the construction party and avoid information deviations that may occur in manual communication, but also use these data as input parameters for intelligent control of the system. This information-based demand transmission method lays a data foundation for the subsequent dynamic adjustment of the water-cement ratio based on multiple factors, effectively improving the accuracy and controllability of the concrete distribution process.

[0034] S102, generating a transportation route for the mixer truck according to the construction site, and obtaining ambient temperature and road condition information of the transportation route.

[0035] After obtaining the construction site information, the control system of the mixing station will call the electronic map service interface, take the location of the mixing station as the starting point and the construction site as the end point, and comprehensively consider the road conditions, traffic control information and historical congestion data to automatically plan the optimal transportation route.

[0036] Subsequently, the system obtains the real-time ambient temperature data along the transport route by accessing the meteorological data service platform, and obtains the road condition information of the transport route through the road monitoring system. Among them, the road condition information mainly includes parameters such as road surface flatness, road surface damage condition level, and road congestion index. The road surface flatness index is an internationally used technical indicator for characterizing the flatness of the road surface. The larger the value, the more uneven the road surface; the road surface damage condition level is a comprehensive evaluation indicator based on the conditions of road cracks, potholes, rutting and other diseases; the road congestion index reflects the real-time traffic capacity of the road. The purpose of the system to obtain these data is that the ambient temperature will directly affect the evaporation rate of concrete water, and the road condition information is closely related to the degree of segregation of concrete. By obtaining these key information in real time, the necessary environmental parameters are provided for the subsequent precise adjustment of the concrete water-cement ratio, so that the concrete quality can be dynamically optimized according to the actual transportation conditions, effectively reducing the risk of concrete performance degradation caused by changes in ambient temperature and road conditions during transportation.

[0037] S103, determining a first water-cement ratio of concrete based on the target water-cement ratio in combination with ambient temperature and road condition information.

[0038] In order to ensure that the concrete maintains good construction performance when it is transported to the construction site, the system needs to make the first optimization adjustment to the target water-cement ratio.

[0039] Specifically, the system first calculates the estimated driving time for the mixer truck to reach the construction site based on the mileage data and real-time road condition information of the transportation route, combined with the current traffic conditions. At the same time, the system calculates the road disturbance coefficient based on the obtained road roughness index IRI (International Roughness Index) value. This coefficient reflects the degree of disturbance caused by uneven road surface to concrete during transportation. The calculation formula is: road disturbance coefficient = K × IRI, where K is the correction coefficient. The smoother the road surface, the smaller the IRI value, and the smaller the calculated road disturbance coefficient, indicating that the road condition has less disturbance effect on concrete.

[0040] Correction coefficient K in the calculation of road disturbance coefficient: This coefficient is determined by statistics of a large number of experimental data, and its value range is usually between 1.2-1.5. The selection of specific values ​​needs to consider factors such as the load state of the mixer truck and the type of suspension system. For example, for a fully loaded mixer truck with mechanical suspension, the K value is 1.5; for a mixer truck with pneumatic suspension, the K value can be 1.2.

[0041] The determination of road surface flatness is based on the longitudinal elevation change of the road surface. During the specific measurement, a laser sensor is used to continuously record the road surface elevation data along the centerline of the lane at a frequency of 100 sampling points per second. The measuring vehicle is driving at a standard speed of 50km / h. After processing, the road surface elevation data collected by the sensor is calculated to obtain the IRI value of each 100-meter section. For the elevation change of the road surface, the system uses a quarter vehicle model for analysis, which includes the sprung mass of the vehicle, the elasticity of the tire, and the damping characteristics of the suspension. When the vehicle passes through the road surface, the displacement caused by the elevation change will cause the vehicle to vibrate up and down, and this vibration is transmitted to the car through the suspension system. By measuring the response of the vehicle suspension displacement to the elevation change of the road surface, the IRI value of the road surface can be calculated. When the IRI value is less than or equal to 2m / km, it indicates that the road surface is smooth and comfortable to drive; when the IRI value is between 2-3m / km, the road surface is generally smooth; when the IRI value is greater than 3m / km, it means that there is obvious unevenness on the road surface and corresponding compensation measures need to be taken.

[0042] Next, the system calculates the amount of concrete water evaporated during transportation based on ambient temperature data and estimated driving time, and with reference to engineering experience. Based on the calculated road disturbance coefficient, the system determines the degree of concrete segregation based on a preset disturbance threshold.

[0043] Specifically, when the road disturbance coefficient is greater than the first preset disturbance threshold (for example, 0.8), the system determines it as severe segregation; when the road disturbance coefficient is greater than the second preset disturbance threshold (for example, 0.5) but not greater than the first preset disturbance threshold, it is determined as moderate segregation; when the road disturbance coefficient is not greater than the second preset disturbance threshold, it is determined as mild segregation. After determining the degree of concrete segregation, the system will retrieve the corresponding compensation water consumption from the water-cement ratio compensation database: severe segregation corresponds to the first compensation water consumption (for example, a reduction of 15L / m³), moderate segregation corresponds to the second compensation water consumption (for example, a reduction of 10L / m³), and mild segregation corresponds to the third compensation water consumption (for example, a reduction of 5L / m³). Finally, the system increases the baseline water consumption corresponding to the target water-cement ratio by the expected amount of water evaporation, and then subtracts the corresponding compensation water consumption to obtain the adjusted water consumption, and divides it by the cement baseline consumption corresponding to the target water-cement ratio, thereby determining the first water-cement ratio. This dynamic compensation mechanism based on ambient temperature and road condition information can effectively prevent performance variations of concrete due to moisture loss and segregation during transportation, and improve the quality reliability of concrete when it arrives at the construction site.

[0044] Based on the above embodiment, as an optional implementation, in S103, based on the target water-cement ratio, combined with the ambient temperature and road condition information, determining the first water-cement ratio of concrete specifically includes S31-S34:

[0045] S31, predicting the driving time of the mixer truck to reach the construction site according to the road condition information, and determining the road condition disturbance coefficient of the transportation route, wherein the road condition disturbance coefficient decreases as the road surface flatness of the transportation route increases.

[0046] For each optional route, the system calculates the driving time based on the length of each road section and the current average speed. For example, a transport route has a total length of 15 kilometers, including 8 kilometers of urban roads with an average speed of 30km / h and 7 kilometers of suburban roads with an average speed of 50km / h. Based on this, the estimated driving time can be calculated to be 24 minutes.

[0047] At the same time, the system needs to determine the road disturbance coefficient based on the IRI value of each road section. When the road surface is relatively flat, the IRI value is small, and the vibration of concrete during transportation is small, so the corresponding road disturbance coefficient is also small; conversely, when the road surface is uneven, the IRI value is large, the vibration of concrete is large, and the road disturbance coefficient increases accordingly. For example, for the above transportation route, the IRI value of urban roads is 2.0m / km due to aging of the road surface; the IRI value of suburban roads is 1.5m / km for newly built roads. Substitute these parameters into the above formula to generate the road disturbance coefficient of the transportation route.

[0048] S32, calculating the evaporation amount of concrete water based on the ambient temperature and the driving time.

[0049] Before preparing the concrete, it is necessary to predict the water evaporation amount during transportation because water evaporation will directly affect the workability and plasticity of the concrete. The system first obtains the future weather forecast data provided by the meteorological department along the transportation route to get the ambient temperature during the expected transportation period. At the same time, combined with the predicted driving duration in S31, the expected water evaporation amount during the entire transportation process is calculated.

[0050] In this embodiment, the calculation formula for the concrete water evaporation amount E (kg) is: ; where: k is the reference evaporation coefficient, with a value of 0.15 kg / (m²·h); A is the surface area of the concrete in contact with the air (m²); T is the driving duration (h); α is the temperature correction coefficient, with a value of 0.02 / °C; t is the ambient temperature (°C); is the reference temperature, with a value of 20°C.

[0051] During transportation, the area where the concrete surface is in direct contact with the air is mainly at the feeding port of the mixing drum, and the exposed area at this place is about 0.8 square meters. Taking a certain engineering project in July as an example, the meteorological forecast shows that the ambient temperature from 2 pm to 3 pm on that day is 35°C and the relative humidity is 45%. The expected driving duration is 30 minutes. According to the above formula, it can be predicted that under such environmental conditions, the water evaporation amount on the concrete surface is about 0.078 kg. This advance prediction of the water evaporation amount provides an important reference basis for subsequent determination of the concrete mix ratio.

[0052] S33. Determine the degree of concrete segregation according to the road condition disturbance coefficient.

[0053] The degree of segregation is used to characterize the uniformity of the aggregate distribution inside the concrete, and is usually quantitatively represented by the segregation coefficient. The larger the segregation coefficient, the more uneven the aggregate distribution. The system summarizes the corresponding relationship between the road condition disturbance coefficient and the segregation coefficient by collecting and analyzing more than 500 times of concrete transportation data in the past year, including the road condition information (such as road surface flatness, turning slope, etc.) of the transportation route and the corresponding concrete arrival segregation detection results. The calculation formula for the road condition disturbance coefficient R is: ; where the determination method of each parameter is as follows: is the road surface flatness coefficient (value range 0.8 - 1.2): Measure the International Roughness Index (IRI) of the road surface through a laser detector; when IRI ≤ 2 mm / m, = 0.8; when 2 mm / m < IRI ≤ 4 mm / m, = 1.0; when 4 mm / m < IRI ≤ 6 mm / m, =1.2; When IRI>6mm / m, the road surface flatness does not meet the transportation requirements, and the road surface needs to be repaired or the transportation route needs to be changed. is the turning coefficient (value range 1.0-1.5): determined according to the turning radius of the road: when the turning radius is ≥100m, =1.0; 50m≤turning radius<100m, =1.2; 20m≤turning radius<50m, =1.5; When the turning radius is <20m, the turning radius is too small and is not suitable for concrete transport trucks to pass through, and the transport route needs to be changed. is the slope coefficient (value range 1.0-1.3): determined according to the longitudinal slope of the road: when the slope is ≤3%, =1.0; 3%<slope≤6%, =1.2; 6%<slope≤9%, =1.3; When the slope is >9%, the slope is too steep and there is a safety hazard. It is not suitable for concrete transport trucks to pass through and the transport route needs to be changed.

[0054] Weight coefficient ( , , ) Determination: Based on the characteristics of different transportation scenarios, the weight of each factor can be dynamically adjusted: Urban road scenario: =0.5, =0.3, =0.2 (mainly affected by flatness); Mountain road scene: =0.3, =0.3, =0.4 (mainly affected by slope); suburban road scene: =0.4, =0.4, =0.2 (smoothness and turning have equal influence).

[0055] Based on the fitting analysis of a large amount of experimental data, the relationship between the concrete segregation coefficient S and the road disturbance coefficient R is as follows: when R<1.0, the road conditions are excellent, at this time: S = 0.25 (concrete basically does not segregate); when 1.0≤R≤2.5: S = 0.2 + 0.1 × R; when R>2.5, the road conditions are extremely poor, at this time: S = 0.45 (concrete segregates severely and transportation is not recommended).

[0056] For example, the transportation route of a certain project is located on an urban road. The weight coefficient of the urban road scenario is used ( =0.5, =0.3, =0.2). The IRI value of this route is 3mm / m (corresponding to =1.0), the turning radius is 80m (corresponding to =1.2), the slope is 4% (corresponding to =1.2), substitute it into the formula for calculating the road disturbance coefficient: R = 0.5×1.0 + 0.3×1.2+ 0.2×1.2 = 1.08. Since 1.0≤R≤2.5, the segregation coefficient is calculated as: S = 0.2 + 0.1×1.08 =0.308.

[0057] Based on the above embodiment, as an optional implementation, in S33, determining the degree of concrete segregation according to the road disturbance coefficient specifically includes S331-S333:

[0058] S331: When the road condition disturbance coefficient is greater than a first preset disturbance threshold, the degree of concrete segregation is determined to be severe segregation.

[0059] S332: When the road condition disturbance coefficient is greater than the second preset disturbance threshold and not greater than the first preset disturbance threshold, it is determined that the degree of concrete segregation is moderate segregation.

[0060] S333: When the road condition disturbance coefficient is not greater than the second preset disturbance threshold, it is determined that the degree of concrete segregation is slight segregation, and the first preset disturbance threshold is greater than the second preset disturbance threshold.

[0061] In order to more accurately evaluate the performance changes of concrete during transportation, the system divides the road disturbance coefficient into different intervals, corresponding to different degrees of concrete segregation. By analyzing a large amount of historical transportation data, the first preset disturbance threshold is determined to be 2.0 and the second preset disturbance threshold is 1.5. When the road disturbance coefficient is greater than 2.0, the concrete will undergo severe segregation, which is manifested as obvious sinking of coarse aggregate and floating of slurry. At this time, the segregation coefficient is usually greater than 0.4; when the road disturbance coefficient is between 1.5 and 2.0, the concrete will undergo moderate segregation, which is manifested as uneven distribution of coarse aggregate but not yet completely stratified, and the segregation coefficient is between 0.3 and 0.4; when the road disturbance coefficient is not greater than 1.5, the concrete will only undergo mild segregation, the aggregate distribution is basically uniform, and the segregation coefficient is less than 0.3.

[0062] For example, if the road disturbance coefficient of a transportation route is 1.8, it is judged as a moderate segregation state according to the above interval division, and the corresponding segregation coefficient is 0.35. This threshold-based segregation degree determination method makes the concrete performance evaluation more intuitive and standardized. In practical applications, when it is judged as severe segregation, the system will immediately recommend changing the transportation route; when it is judged as moderate segregation, the system recommends appropriately increasing the amount of water reducer; when it is judged as mild segregation, only routine monitoring is required.

[0063] S34, determining a first water-cement ratio of the concrete based on the target water-cement ratio and in combination with the evaporation amount of concrete water and the degree of concrete segregation.

[0064] Based on the above embodiment, as an optional implementation, in S34, based on the target water-cement ratio, combined with the evaporation amount of concrete water and the degree of concrete segregation, determining the first water-cement ratio of concrete specifically includes S341-S343:

[0065] S341, when the degree of concrete segregation is severe segregation, obtain the first compensation water consumption corresponding to the severe segregation from the water-cement ratio compensation database, increase the benchmark water consumption corresponding to the target water-cement ratio by the evaporation amount of concrete water and then subtract the first compensation water consumption to obtain the first water consumption, divide the first water consumption by the benchmark cement consumption corresponding to the target water-cement ratio to obtain the first water-cement ratio of the concrete.

[0066] S342, when the degree of concrete segregation is moderate, obtain the second compensation water consumption corresponding to the moderate segregation from the water-cement ratio compensation database, increase the benchmark water consumption corresponding to the target water-cement ratio by the evaporation amount of concrete water and then subtract the second compensation water consumption to obtain the second water consumption, divide the second water consumption by the benchmark cement consumption corresponding to the target water-cement ratio to obtain the first water-cement ratio of the concrete.

[0067] S343, when the degree of concrete segregation is slight segregation, obtain the third compensation water consumption corresponding to slight segregation from the water-cement ratio compensation database, increase the benchmark water consumption corresponding to the target water-cement ratio by the evaporation amount of concrete water and then subtract the third compensation water consumption to obtain the third water consumption, divide the third water consumption by the benchmark cement consumption corresponding to the target water-cement ratio to obtain the first water-cement ratio of the concrete; wherein the first compensation water consumption is greater than the second compensation water consumption, and the second compensation water consumption is greater than the third compensation water consumption.

[0068] In order to accurately compensate for the performance loss of concrete during transportation, the system adopts differentiated water-cement ratio adjustment strategies according to different degrees of segregation. The system has established a water-cement ratio compensation database, which stores the compensation water consumption corresponding to different degrees of segregation: the first compensation water consumption corresponding to severe segregation is 15kg / m³, the second compensation water consumption corresponding to moderate segregation is 10kg / m³, and the third compensation water consumption corresponding to mild segregation is 5kg / m³. The compensation water consumption increases with the severity of segregation, because the more severe the segregation, the more water consumption needs to be reduced to suppress the settlement of aggregates.

[0069] Taking concrete with a target water-cement ratio of 0.45, a baseline cement dosage of 400kg / m³, and a baseline water consumption of 180kg / m³ as an example, when the predicted water evaporation is 8kg / m³: if it is judged to be severe segregation, the first water consumption is 180+8-15=173kg / m³, and the corresponding first water-cement ratio is 173 / 400=0.433; if it is judged to be moderate segregation, the second water consumption is 180+8-10=178kg / m³, and the corresponding first water-cement ratio is 178 / 400=0.445; if it is judged to be mild segregation, the third water consumption is 180+8-5=183kg / m³, and the corresponding first water-cement ratio is 183 / 400=0.458.

[0070] S104, obtaining the rotation speed of the mixing drum on the mixer truck, adjusting the first water-cement ratio according to the rotation speed, and determining the second water-cement ratio of the concrete.

[0071] On the basis of determining the first water-cement ratio, the system needs to further adjust the water-cement ratio according to the fixed speed of the mixer drum of the mixer truck. The speed of the mixer drum of the mixer truck refers to the speed at which the mixer drum rotates around its axis, usually in revolutions per minute. During the transportation of concrete, the mixer drum runs at a fixed speed, which directly affects the shear stress distribution inside the concrete. When the speed is 14 revolutions per minute, the shear stress distribution inside the concrete is the most uniform, which is defined as the base speed. When the actual speed deviates from the base speed, the shear stress distribution inside the concrete will change, and the first water-cement ratio needs to be adjusted to maintain the stability of the concrete performance.

[0072] Specifically, when the actual speed is greater than the reference speed, the greater centrifugal force will cause the aggregate to separate from the cement paste, so the water-cement ratio needs to be reduced to increase the cohesiveness of the paste. The adjustment range is determined as follows: for every increase of 1 rpm, the first water-cement ratio decreases by 0.01. On the contrary, when the actual speed is less than the reference speed, the smaller shearing effect will cause the concrete slump loss to accelerate, and the water-cement ratio needs to be appropriately increased to maintain good workability, and the adjustment range is: for every decrease of 1 rpm, the first water-cement ratio increases by 0.01. The water-cement ratio obtained after such adjustment is the second water-cement ratio.

[0073] For example, when the actual fixed speed of the mixing drum is 16 rpm, which is 2 rpm higher than the reference speed, the first water-cement ratio should be reduced by 0.02 to obtain the second water-cement ratio; when the actual fixed speed is 12 rpm, which is 2 rpm lower than the reference speed, the first water-cement ratio should be increased by 0.02 to obtain the second water-cement ratio. This adjustment mechanism based on fixed speed can effectively compensate for the change in concrete performance caused by the speed deviation from the reference value and improve the quality stability of concrete during transportation.

[0074] Based on the above embodiment, as an optional implementation, in S104, adjusting the first water-cement ratio according to the rotation speed to determine the second water-cement ratio of the concrete specifically includes S41-S44:

[0075] S41, obtaining the driving time of the mixer truck to the construction site.

[0076] S42, determining the amount of moisture loss of the concrete based on the driving time and the speed.

[0077] Based on the above embodiment, as a feasible implementation method, in S42, determining the amount of concrete moisture loss in combination with the driving time and the speed specifically includes S421-S422:

[0078] S421, selecting a moisture loss coefficient corresponding to the rotation speed from a moisture loss database.

[0079] S422: arithmetically multiply the driving time by the selected moisture loss coefficient to obtain the moisture loss of the concrete.

[0080] In order to accurately calculate the amount of water loss of concrete during transportation, the system established a water loss database and stored the corresponding water loss coefficients at different speeds. Through a large amount of experimental data analysis, it was found that the speed of the mixer drum was significantly correlated with the water loss of concrete. After data fitting analysis, the calculation formula for the water loss coefficient k was obtained as follows: k = 0.03n + 0.07; where: k is the water loss coefficient, in kg / (m³·min); n is the speed of the mixer drum, in revolutions per minute.

[0081] For example, when the speed is 1 rpm, the moisture loss coefficient is 0.1kg / (m³·min); when the speed is 2 rpm, the moisture loss coefficient is 0.13kg / (m³·min); when the speed is 3 rpm, the moisture loss coefficient is 0.16kg / (m³·min). In actual application, if the speed of the mixer truck is 2 rpm, the system selects the corresponding moisture loss coefficient of 0.13kg / (m³·min) from the database, and then multiplies the coefficient by the measured driving time to obtain the moisture loss of concrete.

[0082] S43, under the condition of keeping the cement dosage corresponding to the first water-cement ratio unchanged, adding the water dosage corresponding to the first water-cement ratio to the water loss of the concrete to obtain the water dosage after compensation.

[0083] S44, dividing the compensated water consumption by the cement consumption corresponding to the first water-cement ratio to determine a second water-cement ratio of the concrete.

[0084] In order to further compensate for the moisture loss of concrete during the actual transportation process, the system needs to dynamically adjust the water-cement ratio according to the actual operating parameters of the mixer truck. First, the system tracks the location of the mixer truck in real time through the on-board GPS positioning device to obtain the driving time from the mixing station to the construction site, for example, the driving time is 45 minutes. At the same time, the actual speed of the mixer truck drum during transportation is recorded, for example, the standard speed is 2 rpm. According to the combination of driving time and speed, the system can determine the actual moisture loss of concrete: when the driving time is 45 minutes and the speed is 2 rpm, the moisture loss of concrete is 6kg / m³. Taking the concrete with the first water-cement ratio of 0.45, cement consumption of 400kg / m³, and water consumption of 180kg / m³ as an example, while keeping the cement consumption of 400kg / m³ unchanged, the water consumption of 180kg / m³ is added to the moisture loss of 6kg / m³, and the water consumption after compensation is 186kg / m³. Finally, the second water-cement ratio is determined to be 0.465 by dividing the compensated water consumption of 186 kg / m³ by the cement consumption of 400 kg / m³.

[0085] S105, sending the second water-cement ratio to the control system of the mixing station, so that the control system controls the mixing station to put concrete into the mixing drum according to the second water-cement ratio for mixing and transportation.

[0086] After determining the second water-cement ratio, this parameter needs to be sent to the central control system of the mixing station in real time to guide the batching and mixing process of concrete. The central control system of the mixing station includes a PLC controller and batching management software, which are connected to each actuator through industrial Ethernet. After receiving the second water-cement ratio data, the system automatically calculates the amount of cement and water required per cubic meter of concrete.

[0087] Specifically, assuming that the second water-cement ratio is 0.45 and the target strength grade is C30, the system calculates the water consumption as 180kg / m³ based on the cement consumption of 400kg / m³. The central control system converts these batching data into control instructions, and controls the feeding speed of the cement metering scale and the water metering scale through the frequency converter to ensure that the batching accuracy meets the specification requirements. During the batching process, the accuracy of the cement metering scale is controlled within ±1%, and the accuracy of the water metering scale is controlled within ±0.5%. When the raw materials are prepared according to the calculated amount, the system controls the discharge door to open and put the prepared concrete materials into the mixing drum.

[0088] After sending the second water-cement ratio to the control system of the mixing station, it also includes:

[0089] Acquire video images collected by a monitoring camera installed on the mixer truck; identify the rotation state of the mixer drum and abnormal behavior in the water adding area of ​​the mixer truck based on the video images; generate warning information when it is identified that the rotation state of the mixer drum is abnormal and / or there is abnormal behavior in the water adding area of ​​the mixer truck.

[0090] In order to prevent quality problems caused by human intervention or equipment failure during the transportation of concrete, the system monitors the entire transportation process in real time through high-definition surveillance cameras installed on the mixer truck. The system uses computer vision technology to analyze video images, focusing on monitoring the rotation status of the mixing drum and abnormal behavior in the water addition area.

[0091] For monitoring the rotating state of the mixing drum, the system calculates the rotating speed of the drum through an image recognition algorithm. When the speed is detected to be more than 2.5 rpm or less than 1 rpm, it is determined to be an abnormal state. For monitoring the water adding area, the system identifies abnormal behaviors such as people approaching the water adding port and adding water privately. For example, during a certain transportation process, the system detected that the rotating speed of the mixing drum suddenly dropped to 0.5 rpm, and at the same time identified that someone stayed in the water adding area for more than 3 minutes. The system immediately generated an early warning information containing the abnormal time, location, and type, and pushed it to the dispatch center and quality management personnel through a mobile terminal. This early warning mechanism based on visual monitoring effectively prevents illegal operations during transportation, such as adding water on the way and stopping. Practice has shown that after adopting this monitoring and early warning system, the quality of concrete transportation has been significantly improved, the incidence of abnormal events has been reduced by 85%, and due to the video evidence collection function, the standardization and traceability of the transportation process have been greatly improved.

[0092] Based on the above method, the present application also discloses a dynamic compensation system for mixer truck transportation, such as Figure 2 As shown, Figure 2 : is a structural diagram of a dynamic compensation system for mixer truck transportation provided by an embodiment of the present application, the system includes: a receiving module, a generating module, a combining module, a regulating module and an output module; wherein,

[0093] The receiving module is used to receive the concrete demand information sent by the user end, and the demand information includes the target water-cement ratio of the concrete and the construction site; the generating module is used to generate the transportation route of the mixer truck according to the construction site, and obtain the ambient temperature and road condition information of the transportation route; the combining module is used to determine the first water-cement ratio of the concrete based on the target water-cement ratio in combination with the ambient temperature and road condition information; the regulating module is used to obtain the rotation speed of the mixing drum on the mixer truck, adjust the first water-cement ratio according to the rotation speed, and determine the second water-cement ratio of the concrete; the output module is used to send the second water-cement ratio to the control system of the mixing station, so that the mixing station puts the concrete into the mixing drum according to the second water-cement ratio for mixing and transportation.

[0094] It should be noted that: when the system provided in the above embodiment realizes its functions, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the system and method embodiments provided in the above embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0095] See also Figure 3 , is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 3 As shown, the electronic device 1000 may include: at least one processor 1001 , at least one network interface 1004 , a user interface 1003 , a memory 1005 , and at least one communication bus 1002 .

[0096] The communication bus 1002 is used to realize the connection and communication between these components.

[0097] The user interface 1003 may include a display screen (Display) and a camera (Camera). Optionally, the user interface 1003 may also include a standard wired interface and a wireless interface.

[0098] The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface).

[0099] Among them, the processor 1001 may include one or more processing cores. The processor 1001 uses various interfaces and lines to connect various parts in the entire server, and executes various functions of the server and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 1005, and calling data stored in the memory 1005. Optionally, the processor 1001 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 1001 can integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application programs; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor 1001, and it can be implemented separately through a chip.

[0100] Among them, the memory 1005 may include a random access memory (Random Access Memory, RAM) and may also include a read-only memory (Read-Only Memory). Optionally, the memory 1005 includes a non-transitory computer-readable storage medium. The memory 1005 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 1005 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc.; the data storage area may store data involved in the above-mentioned various method embodiments, etc. The memory 1005 may optionally also be at least one storage device located away from the aforementioned processor 1001. As Figure 3 As shown, the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and an application program of a dynamic compensation method for mixer truck transportation.

[0101] exist Figure 3In the electronic device 1000 shown, the user interface 1003 is mainly used to provide an input interface for the user and obtain data input by the user; and the processor 1001 can be used to call an application program stored in the memory 1005 for a dynamic compensation method for mixer truck transportation. When executed by one or more processors, the electronic device executes one or more methods described in the above embodiments.

[0102] An electronic device readable storage medium stores instructions, which, when executed by one or more processors, enable the electronic device to execute one or more of the methods described in the above embodiments.

[0103] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required for the present application.

[0104] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0105] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some service interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0106] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0107] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0108] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a memory and includes several instructions for a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned memory includes: various media that can store program codes, such as USB flash drives, mobile hard drives, magnetic disks or optical disks.

[0109] The above is only an exemplary embodiment of the present disclosure, and the scope of the present disclosure cannot be limited thereto. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the specification and practicing the disclosure here, those skilled in the art will easily think of other embodiments of the present disclosure. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field not recorded in the present disclosure. The description and examples are only regarded as exemplary, and the scope and spirit of the present disclosure are defined by the claims.

Claims

1. A dynamic compensation method for mixer truck transportation, characterized in that: The method comprises: Receiving concrete demand information sent by a user terminal, wherein the demand information includes a target water-cement ratio of the concrete and a construction site; Generate a transportation route for the mixer truck according to the construction site, and obtain ambient temperature and road condition information of the transportation route; Based on the target water-cement ratio, combined with the ambient temperature and the road condition information, determining a first water-cement ratio of concrete; Obtaining the rotation speed of the mixing drum on the mixer truck, adjusting the first water-cement ratio according to the rotation speed, and determining a second water-cement ratio of the concrete; The second water-cement ratio is sent to a control system of a mixing station, so that the control system controls the mixing station to put concrete into the mixing drum for mixing and transportation according to the second water-cement ratio.

2. The dynamic compensation method for mixer truck transportation according to claim 1, characterized in that: Determining a first water-cement ratio of concrete based on the target water-cement ratio and in combination with the ambient temperature and the road condition information includes: According to the road condition information, predict the driving time of the mixer truck to reach the construction site, and determine the road condition disturbance coefficient of the transportation route, wherein the road condition disturbance coefficient decreases as the road surface flatness of the transportation route increases; Calculate the evaporation amount of concrete water by combining the ambient temperature and the driving time; Determining the degree of concrete segregation according to the road condition disturbance coefficient; On the basis of the target water-cement ratio, the first water-cement ratio of the concrete is determined in combination with the evaporation amount of concrete water and the degree of concrete segregation.

3. The dynamic compensation method for mixer truck transportation according to claim 2, characterized in that: Determining the degree of concrete segregation according to the road disturbance coefficient includes: When the road condition disturbance coefficient is greater than a first preset disturbance threshold, determining that the degree of concrete segregation is severe segregation; When the road condition disturbance coefficient is greater than a second preset disturbance threshold and not greater than the first preset disturbance threshold, determining that the degree of concrete segregation is moderate segregation; When the road condition disturbance coefficient is not greater than the second preset disturbance threshold, it is determined that the degree of concrete segregation is slight segregation, and the first preset disturbance threshold is greater than the second preset disturbance threshold.

4. The dynamic compensation method for mixer truck transportation according to claim 3 is characterized in that: The step of determining a first water-cement ratio of concrete based on the target water-cement ratio and in combination with the evaporation amount of concrete water and the degree of segregation of the concrete includes: When the degree of segregation of the concrete is severe segregation, a first compensation water consumption corresponding to the severe segregation is obtained from a water-cement ratio compensation database, a first water consumption is obtained by increasing the base water consumption corresponding to the target water-cement ratio by the amount of evaporation of concrete water and then subtracting the first compensation water consumption, and the first water consumption is divided by the base cement consumption corresponding to the target water-cement ratio to obtain a first water-cement ratio of the concrete; When the degree of segregation of the concrete is moderate segregation, a second compensation water consumption corresponding to the moderate segregation is obtained from a water-cement ratio compensation database, a second water consumption is obtained by adding the concrete water evaporation amount to the base water consumption corresponding to the target water-cement ratio and then subtracting the second compensation water consumption, and the second water consumption is divided by the cement base consumption corresponding to the target water-cement ratio to obtain a first water-cement ratio of the concrete; When the degree of segregation of the concrete is slight segregation, a third compensation water amount corresponding to the slight segregation is obtained from the water-cement ratio compensation database, the benchmark water amount corresponding to the target water-cement ratio is increased by the evaporation amount of concrete water and then subtracted from the third compensation water amount to obtain a third water amount, and the third water amount is divided by the benchmark cement amount corresponding to the target water-cement ratio to obtain a first water-cement ratio of the concrete; wherein the first compensation water amount is greater than the second compensation water amount, and the second compensation water amount is greater than the third compensation water amount.

5. The dynamic compensation method for mixer truck transportation according to claim 1, characterized in that: The step of adjusting the first water-cement ratio according to the rotation speed to determine a second water-cement ratio of concrete includes: Obtaining the driving time of the mixer truck to reach the construction site; Determine the amount of moisture loss of concrete by combining the driving time and the speed; Under the condition that the cement dosage corresponding to the first water-cement ratio remains unchanged, the water dosage corresponding to the first water-cement ratio is added to the water loss of the concrete to obtain the water dosage after compensation; The second water-cement ratio of the concrete is determined by dividing the compensated water consumption by the cement consumption corresponding to the first water-cement ratio.

6. The dynamic compensation method for mixer truck transportation according to claim 5, characterized in that: The determining of the amount of moisture loss of concrete by combining the driving time and the speed includes: Selecting a water loss coefficient corresponding to the rotation speed from a water loss database; The driving time is arithmetically multiplied by the selected moisture loss coefficient to obtain the moisture loss of the concrete.

7. The dynamic compensation method for mixer truck transportation according to claim 1, characterized in that: After sending the second water-cement ratio to the control system of the mixing station, the method further includes: Obtaining video images collected by a surveillance camera installed on the mixer truck; According to the video image, identifying the rotation state of the mixing drum and abnormal behavior of the water adding area of ​​the mixer truck; When it is identified that the rotation state of the mixing drum is abnormal and / or there is abnormal behavior in the water adding area of ​​the mixer truck, an early warning message is generated.

8. A dynamic compensation system for mixer truck transportation, characterized in that: The system includes: a receiving module, a generating module, a combining module, a regulating module and an output module; wherein, The receiving module is used to receive concrete demand information sent by the user end, wherein the demand information includes a target water-cement ratio of the concrete and a construction site; The generating module is used to generate a transportation route of the mixer truck according to the construction site, and obtain the ambient temperature and road condition information of the transportation route; The combining module is used to determine a first water-cement ratio of concrete based on the target water-cement ratio in combination with the ambient temperature and the road condition information; The regulating module is used to obtain the rotation speed of the mixing drum on the mixer truck, and adjust the first water-cement ratio according to the rotation speed to determine the second water-cement ratio of the concrete; The output module is used to send the second water-cement ratio to the control system of the mixing station, so that the control system controls the mixing station to put concrete into the mixing drum according to the second water-cement ratio for mixing and transportation.

9. An electronic device, characterized in that: It includes a processor, a memory, a user interface and a network interface, the memory is used to store instructions, the user interface and the network interface are used to communicate with other devices, and the processor is used to execute the instructions stored in the memory so that the electronic device executes the method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and execute the method according to any one of claims 1 to 7.

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