CN113681720B - Intelligent monitoring method, system and device for concrete mixer truck - Google Patents
Intelligent monitoring method, system and device for concrete mixer truck Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000003756 stirring Methods 0.000 claims abstract description 129
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 90
- 238000009826 distribution Methods 0.000 claims description 68
- 230000015271 coagulation Effects 0.000 claims description 16
- 238000005345 coagulation Methods 0.000 claims description 16
- 239000006185 dispersion Substances 0.000 claims description 14
- 239000004568 cement Substances 0.000 claims description 12
- 238000004590 computer program Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 description 12
- 238000010276 construction Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000000740 bleeding effect Effects 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000012550 audit Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
- B28C5/4203—Details; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
- B28C5/4203—Details; Accessories
- B28C5/4206—Control apparatus; Drive systems, e.g. coupled to the vehicle drive-system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
- B28C5/4203—Details; Accessories
- B28C5/4206—Control apparatus; Drive systems, e.g. coupled to the vehicle drive-system
- B28C5/422—Controlling or measuring devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/02—Controlling the operation of the mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/02—Controlling the operation of the mixing
- B28C7/022—Controlling the operation of the mixing by measuring the consistency or composition of the mixture, e.g. with supply of a missing component
- B28C7/024—Controlling the operation of the mixing by measuring the consistency or composition of the mixture, e.g. with supply of a missing component by measuring properties of the mixture, e.g. moisture, electrical resistivity, density
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
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- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses an intelligent monitoring method, a system and a device for a concrete mixer truck, wherein the method comprises the following steps: acquiring real-time data related to the stirring state of the stirring drum; determining the stirring state of the stirring drum according to the acquired real-time data related to the stirring state of the stirring drum, wherein the stirring state is used for representing the uniform stirring degree of concrete in the stirring drum; determining whether early warning is needed or whether the working state of the mixing drum needs to be adjusted according to the mixing state of the mixing drum; according to the invention, by reasonably arranging the monitoring points, the information and data related to the stirring state are obtained in time, the stirring state can be rapidly and effectively identified, and early warning and intelligent control are carried out according to the identified state.
Description
Technical Field
The invention belongs to the technical field of intelligent monitoring, and particularly relates to an intelligent monitoring method, system and device for a concrete mixer truck.
Background
With the continuous development of domestic and foreign building fields, corresponding engineering technology and building materials are also rapidly improved, and particularly, as a concrete material of the building material, the concrete material has the characteristics of rich raw materials, low price and simple production process, so that the consumption of the concrete material is increased, and meanwhile, the concrete has the characteristics of high compressive strength, good durability, wide strength grade range and the like. These characteristics make it very useful in a wide range of applications, and are important materials in various civil engineering and other related fields. The characteristics of the concrete determine that the concrete is a micro-uneven and macro-even material, the macro-even state can be kept only by stirring all the time, if the concrete is not stirred or is not stirred uniformly, a series of problems such as false coagulation, segregation, layered bleeding and the like can occur, and different cement ratios have influence on the material characteristics such as the strength, the slump, the workability and the like of the concrete, and the problems have great influence on the quality of the concrete. In modern construction technology, concrete is usually transported by using a concrete mixer truck, in the actual transportation process, a mixing drum usually rotates according to a fixed rotating speed, or in order to save oil consumption, a driver intermittently controls the mixing drum to rotate, so that the concrete cannot be guaranteed to reach a better uniformly-mixed state, the mixing state of the concrete cannot be accurately monitored in real time, and the rotating speed of the mixing drum cannot be adjusted according to the actual mixing state, so that the condition of non-uniform mixing is easily caused, the common problems of pseudo coagulation, segregation and layered bleeding of the concrete are caused, the material characteristics of the concrete such as strength, slump, workability and the like are further influenced, the construction quality is seriously influenced, and in addition, in order to smoothly unload the concrete, the conditions of illegally adding water and feeding materials in the concrete are also caused, although the workability and the fluidity of the concrete can be improved, the water cement ratio of the concrete is changed, the problems are easily caused, the construction quality of the concrete is seriously influenced, and the situations are difficult to recognize and monitor in time in reality. The problems will have serious adverse effects on the actual concrete transportation process and the subsequent construction quality, and the problems need to be solved urgently at present.
Disclosure of Invention
In view of the above problems, the present application provides an intelligent monitoring method, system and device for a concrete mixer truck to solve the above technical problems.
The invention provides the following technical scheme:
in a first aspect, the present invention provides a method for monitoring a concrete mixer truck, the method comprising:
acquiring real-time data related to the stirring state of the stirring drum;
determining the stirring state of the stirring drum according to the acquired real-time data related to the stirring state of the stirring drum, wherein the stirring state is used for representing the uniform stirring degree of concrete in the stirring drum;
determining whether early warning is needed or whether the working state of the mixing drum needs to be adjusted according to the mixing state of the mixing drum;
in a second aspect, the present invention provides a concrete mixer truck monitoring system, the system comprising:
the state monitoring module is used for acquiring real-time data related to the stirring state of the stirring drum;
the state identification module is used for determining the stirring state of the stirring drum according to the acquired real-time data related to the stirring state of the stirring drum, and the stirring state is used for representing the uniform stirring degree of concrete in the stirring drum;
the state early warning adjusting module is used for determining whether early warning is needed or whether the working state of the mixing drum needs to be adjusted according to the mixing state of the mixing drum;
in a third aspect, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the concrete mixer truck monitoring method of the first aspect.
In a fourth aspect, the invention provides a computer apparatus comprising a memory and a processor; the memory for storing a computer program; the processor is configured to implement the concrete mixer truck monitoring method according to the first aspect when executing the computer program.
Compared with the prior art, the invention has the following beneficial effects:
(1) the parameter closely related to the characteristics of the concrete material such as strength, slump, workability, fluidity and the like is the water-cement ratio, and the water-cement ratio, namely the water content of the concrete, can be accurately reflected;
(2) the invention identifies the violation operation and gives early warning in time by monitoring the water content and combining the temperature change through the objective natural laws, and provides an integrated multi-angle monitoring and early warning function for supervision departments and customers by combining GPS positioning information and a video monitoring technology, thereby meeting the requirements of market and supervision;
(3) according to the invention, by combining the structure and the working principle of the mixing drum, monitoring points are arranged in different circumferential layers taking the rotation axis of the mixing drum as the center, so that monitoring data of water content and temperature of different positions and different layers in the mixing drum can be obtained in real time, and timely and effective data support is provided for the identification of the mixing state in the mixing drum;
(4) the invention utilizes real-time monitoring data of water content and temperature to determine two indexes of the stirring state of concrete in the stirring cylinder, namely: the water content distribution discrete coefficient and the temperature distribution discrete coefficient can reflect the local state and the overall state of the concrete during stirring from two different angles of water content and temperature respectively, and accurately identify the stirring state and illegal operation of the concrete through the two indexes and by combining objective natural rules;
(5) according to the invention, on the basis of the water content monitoring data, the intelligent control of the rotation speed of the mixing drum is realized by combining the adjustable range of the rotation speed of the mixing drum on the premise of ensuring the good state of concrete mixing, the rotation speed of the mixing drum can be intelligently adjusted when the bad condition occurs in the mixing state, so that the mixing state of the concrete gradually reaches the good state, the intelligent control of the rotation speed of the mixing drum is only involved when the mixing state is bad, the transportation cost of the concrete can be saved, and the quality of the concrete can be kept good in the transportation process;
drawings
For ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic flow diagram of the process of the present invention;
FIG. 2 is a schematic flow chart of another method of the present invention;
FIG. 3 is a schematic diagram of the system of the present invention;
FIG. 4 is a schematic diagram of another system configuration of the present invention;
FIG. 5 is a schematic diagram of a computer-readable storage medium of the present invention;
FIG. 6 is a schematic diagram of a computer device according to the present invention
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art based on the embodiments of the present invention without inventive step, are within the scope of the present invention.
Example 1
As shown in fig. 1, the present invention provides a concrete mixer monitoring method, including:
acquiring real-time data related to the stirring state of the stirring drum;
determining the stirring state of the stirring drum according to the acquired real-time data related to the stirring state of the stirring drum, wherein the stirring state is used for representing the uniform stirring degree of concrete in the stirring drum;
determining whether early warning is needed or whether the working state of the mixing drum needs to be adjusted according to the mixing state of the mixing drum;
further, the acquiring real-time data related to the stirring state of the stirring drum comprises:
acquiring real-time monitoring data of water content and temperature in different circumferential layers taking a rotation axis of a mixing drum as a center during concrete mixing and positioning information of a mixer truck;
arranging the water content sensor and the temperature sensor at monitoring points in different circumferential layers by taking the rotation axis of the mixing drum as the center, wherein the maximum distance between the arrangement position in each circumferential layer and the rotation axis of the mixing drum is the circumferential radius superposed with the shell of the mixing drum; the arrangement of the sensors can include monitoring ranges of different positions and different layers of the concrete in the mixing drum from left to right, and the obtained monitoring data reflect the state of the mixing truck in the whole working process in real time from the angles of different positions and different layers; the water content can accurately reflect the current water-cement ratio of concrete in the mixing drum, and whether the condition of adding water or charging midway exists in the mixing process can be identified by combining the temperature parameter;
as shown in fig. 2, further, the determining the stirring status of the stirring drum according to the acquired real-time data related to the stirring status of the stirring drum includes:
determining a water content distribution discrete coefficient and a temperature distribution discrete coefficient according to the acquired monitoring data of the water content and the temperature in different circumferential layers by taking the rotation axis of the mixing drum as the center during the concrete mixing;
if the water content distribution discrete coefficient is less than or equal to a first threshold value, identifying the stirring state as a uniform stirring state, and keeping the rotation speed of the stirring drum unchanged at the default rotation speed;
if the water content distribution discrete coefficient is larger than the first threshold value and smaller than the second threshold value, the stirring is identified to be in an uneven state, and at the moment, the rotating speed of the stirring drum needs to be adjusted so as to reach the stirring even state again;
if the water content distribution discrete coefficient is larger than or equal to the second threshold value, the stirring state is further determined by combining the temperature distribution discrete coefficient:
a. at the moment, if the temperature distribution discrete coefficient is larger than or equal to the set threshold, the state of water adding in the midway is identified, and early warning is sent out;
b. at the moment, if the temperature distribution discrete coefficient is smaller than a set threshold value, the state is identified as a midway charging state, and an early warning is sent out;
wherein the first threshold is less than the second threshold.
The water content distribution discrete coefficient represents the discrete degree of the water content monitored at different positions of each circumferential layer in the overall monitoring data, and the higher the discrete degree is, the more uneven the stirring state is; the temperature distribution dispersion coefficient is used for representing the dispersion degree of the temperature monitored at different positions of each circumferential layer in the overall monitoring data, and the higher the dispersion degree is, the more uneven the temperature distribution is;
uneven stirring has many harms, for example, a series of problems such as false coagulation, segregation, layered bleeding and the like are easy to occur, and different cement ratios have influence on material characteristics such as strength, slump, workability and the like of concrete, and the problems have great influence on the construction quality of the concrete. However, if water is added in the concrete in an illegal way, although the workability and the fluidity of the concrete can be increased, the water-cement ratio of the concrete is changed, the original standard proportion of the concrete is changed no matter water is added or material is added, the problems are easily caused, the strength, the slump, the workability, the fluidity and the like of the concrete are influenced, and the pouring quality during construction cannot be ensured.
When the early warning is sent out, the GPS positioning and video monitoring equipment can be combined, the early warning time, the early warning condition, the positioning information, and the image and the video within a certain time (such as 30 seconds) before and after the early warning are stored and transmitted to a set target (such as a supervision department), and the function of tracing is realized.
When the GPS displays that the mixer truck is in the concrete mixing station, in order to avoid false alarm of early warning, if the mixing state is recognized to be water adding midway or charging midway, the system can judge as invalid recognition, and when the mixer truck is driven out of the concrete mixing station for a certain time and then the concrete discharging in the mixing drum is completed, during the period, if the mixing state is recognized to be water adding midway or charging midway, the system can give an early warning in time, and store the early warning time, the early warning condition, the positioning information and the images and videos in a certain time (such as 30 seconds) before and after the early warning, and transmit the images and videos to a set target (such as a supervision department), thereby realizing the function of tracing.
Further, the specific determination method of the water content distribution discrete coefficient and the temperature distribution discrete coefficient is as follows:
(1) water content distribution dispersion coefficient
Wherein gamma is a water content distribution discrete coefficient;
i is the ith circumferential layer of the mixing drum from left to right;
n 1 the total number of the circumferential layers of the mixing drum from left to right;
γ i the stirring coagulation index of the ith circumferential layer;
γ 0 the standard mixing coagulation index is corresponding to the required concrete standard water cement ratio;
(2) coefficient of variation of temperature distribution
Wherein T is a temperature distribution dispersion coefficient;
j is the jth circumferential layer of the mixing drum from left to right;
n 2 is a circumferential layer assembly of a mixing drum from left to rightCounting;
T j monitoring the effective value of the temperature of the jth circumferential layer;
T 0 the effective value of the temperature monitoring under the state that the concrete is uniformly stirred;
γ i representing the stirring uniformity degree of the concrete of the ith circumferential layer in the stirring cylinder for the stirring and coagulation index of the ith circumferential layer; t is j Representing a real-time temperature value of the jth circumferential layer in the mixing drum for a temperature monitoring effective value of the jth circumferential layer; t is 0 The temperature monitoring effective value is generally the effective value when the concrete mixing station is out of the station, because the concrete in the mixing drum is usually uniformly mixed or close to the uniform mixing state when the station is out of the station;
further, the method for determining the stirring coagulation index of the ith circumferential layer specifically comprises the following steps:
wherein, γ i The stirring coagulation index of the ith circumferential layer;
m i the total number of the water content monitoring points of the ith circumferential layer of the mixing drum is counted;
k is the kth circumferential layer of the mixing drum from left to right;
Setting a water content sensor corresponding to the water content monitoring point, setting a temperature sensor corresponding to the temperature monitoring point, setting the positions and the number of the water content monitoring point and the temperature monitoring point to be the same or different, and setting the specific positions and the number of the water content monitoring point and the temperature monitoring point independently according to actual requirements; of course, according to the principle of saving cost and data consistency, the ranges of the circumferential layers of the water content monitoring points and the temperature monitoring points can be completely or partially overlapped, and the positions of the monitoring points in the same circumferential layer can also be completely or partially overlapped;
further, when the rotating speed of the mixing drum needs to be adjusted, a manual adjusting mode or an intelligent adjusting mode is adopted, the manual adjusting mode is manually controlled by a driver, and the intelligent adjusting mode is intelligently controlled by the system according to the change of the discrete coefficient of the water content distribution, and the specific method comprises the following steps:
wherein N is the rotating speed output value of the mixing drum;
gamma is a water content distribution discrete coefficient;
β 1 is a first threshold value;
β 2 is a second threshold value;
N 0 defaulting the rotating speed of the mixing drum;
the maximum output value of the rotating speed of the mixing drum is the maximum safe rotating speed of the mixing drum.
Example 2
As shown in fig. 3-4, the present invention provides a concrete mixer truck monitoring system, comprising:
the state monitoring module is used for acquiring real-time data related to the stirring state of the stirring drum;
the state identification module is used for determining the stirring state of the stirring drum according to the acquired real-time data related to the stirring state of the stirring drum, and the stirring state is used for representing the uniform stirring degree of concrete in the stirring drum;
the state early warning adjusting module is used for determining whether early warning is needed or whether the working state of the mixing drum needs to be adjusted according to the mixing state of the mixing drum;
further, the state monitoring module obtains real-time data including: real-time monitoring data of water content and temperature in different circumferential layers by taking the rotation axis of the mixing drum as the center during concrete mixing;
further, the system further comprises:
the state identification parameter determining module is used for determining a water content distribution discrete coefficient and a temperature distribution discrete coefficient according to the acquired monitoring data of the water content and the temperature in different circumferential layers by taking the rotation axis of the mixing drum as the center during the concrete mixing;
the state identification and judgment module is used for identifying and judging the stirring state of the stirring drum according to the determined water content distribution discrete coefficient and the temperature distribution discrete coefficient;
further, the method for determining the moisture content distribution discrete coefficient and the temperature distribution discrete coefficient in the state identification parameter determination module includes:
(1) water content distribution dispersion coefficient
Wherein gamma is a water content distribution discrete coefficient;
i is the ith circumferential layer of the mixing drum from left to right;
n 1 the total number of the circumferential layers of the mixing drum from left to right;
γ i the stirring coagulation index of the ith circumferential layer;
γ 0 and the standard mixing coagulation index is corresponding to the required concrete standard water cement ratio.
(2) Coefficient of variation of temperature distribution
Wherein T is a temperature distribution dispersion coefficient;
j is the jth circumferential layer of the mixing drum from left to right;
n 2 the total number of circumferential layers of the mixing drum from left to right;
T j monitoring the effective value of the temperature of the jth circumferential layer;
T 0 the effective value is the temperature monitoring value under the state that the concrete is uniformly stirred;
γ i for stirring of the ith circumferential layerThe concrete index represents the uniform mixing degree of the concrete of the ith circumferential layer in the mixing drum; t is j Representing a real-time temperature value of the jth circumferential layer in the mixing drum for a temperature monitoring effective value of the jth circumferential layer; t is a unit of 0 The effective value of temperature monitoring is generally obtained when the concrete mixing station is out of the station, because the concrete in the mixing drum is usually uniformly mixed or nearly uniformly mixed when the station is out of the station.
Further, the method for determining the stirring coagulation index of the ith circumferential layer specifically comprises the following steps:
wherein, γ i The stirring coagulation index of the ith circumferential layer;
m i the total number of the water content monitoring points of the ith circumferential layer of the mixing drum is counted;
k is the kth circumferential layer of the mixing drum from left to right;
setting a water content sensor corresponding to the water content monitoring point, setting a temperature sensor corresponding to the temperature monitoring point, setting the positions and the number of the water content monitoring point and the temperature monitoring point to be the same or different, and setting the specific positions and the number of the water content monitoring point and the temperature monitoring point independently according to actual requirements; of course, according to the principle of saving cost and data consistency, the ranges of the circumferential layers of the water content monitoring points and the temperature monitoring points can be completely or partially overlapped, and the positions of the monitoring points in the same circumferential layer can also be completely or partially overlapped.
Further, the method for identifying and judging the stirring state of the stirring drum in the state identification and judgment module comprises the following steps:
if gamma is less than or equal to beta 1 If the stirring is uniform, the stirring drum is kept rotatingThe default rotating speed is unchanged;
if beta is 1 ＜γ＜β 2 If the stirring is not uniform, the rotation speed of the stirring drum needs to be adjusted to reach the uniform stirring state again;
if gamma is not less than beta 2 And then, combining the temperature distribution dispersion coefficient, further determining the stirring state:
a. at the moment, if T is larger than or equal to alpha, the water adding state is identified in midway, and early warning is sent out;
b. at the moment, if T is less than alpha, the state is identified as a midway charging state, and an early warning is sent out;
wherein gamma is a water content distribution discrete coefficient;
t is a temperature distribution dispersion coefficient;
β 1 is a first threshold value;
β 2 is a second threshold value, and β 1 ＜β 2 ；
Alpha is a set threshold value.
The water content distribution discrete coefficient represents the discrete degree of the water content monitored at different positions of each circumferential layer in the overall monitoring data, and the higher the discrete degree is, the more uneven the stirring state is; the temperature distribution dispersion coefficient is used for representing the dispersion degree of the temperature monitored at different positions of each circumferential layer in the overall monitoring data, and the higher the dispersion degree is, the more uneven the temperature distribution is;
when the early warning is sent out, the GPS positioning and video monitoring equipment can be combined, the early warning time, the early warning condition, the positioning information, and the image and the video within a certain time (such as 30 seconds) before and after the early warning are stored and transmitted to a set target (such as a supervision department), and the function of tracing is realized.
When the GPS displays that the mixer truck is in the concrete mixing plant, in order to avoid false alarm of early warning, if the mixing state is identified to be water adding midway or charging midway, the system can judge as invalid identification, and when the mixer truck is driven out of the concrete mixing plant for a certain time and then concrete discharging in the mixing drum is completed, during the period, if the mixing state is identified to be water adding midway or charging midway, the system can give an early warning in time, and store the early warning time, the early warning condition, the positioning information and the images and videos in a certain time (such as 30 seconds) before and after the early warning, and transmit the images and videos to a set target (such as a supervision department), thereby realizing the function of tracing the source.
Further, when the rotating speed of the mixing drum needs to be adjusted, a manual adjusting mode or an intelligent adjusting mode is adopted, the manual adjusting mode is manually controlled by a driver, and the intelligent adjusting mode is intelligently controlled by the system according to the change of the discrete coefficient of the water content distribution, and the specific method comprises the following steps:
wherein N is the rotating speed output value of the mixing drum;
gamma is the water content distribution discrete coefficient;
β 1 is a first threshold value;
β 2 is a second threshold value;
N 0 defaulting the rotating speed of the mixing drum;
the highest output value of the rotating speed of the mixing drum is the maximum safe rotating speed of the mixing drum.
Example 3
As shown in fig. 5, the present invention provides a computer-readable storage medium on which a computer program is stored, characterized in that the program, when executed by a processor, implements the audit data processing method as described in embodiment 1 above.
Example 4
As shown in fig. 6, the present invention provides a computer device, which is characterized by comprising a memory and a processor; the memory for storing a computer program; the processor is configured to implement the audit data processing method according to embodiment 1 when executing the computer program.
Compared with the prior art, the invention has the following beneficial effects:
(1) the parameter closely related to the characteristics of the concrete material such as strength, slump, workability, fluidity and the like is the water-cement ratio, and the water-cement ratio, namely the water content of the concrete, can be accurately reflected;
(2) the invention identifies the violation operation and gives early warning in time by monitoring the water content and combining the temperature change through the objective natural laws, and simultaneously combines the GPS positioning information and the video monitoring technology to provide an integrated multi-angle monitoring and early warning function for supervision departments and customers so as to meet the requirements of market and supervision;
(3) according to the invention, by combining the structure and the working principle of the mixing drum, monitoring points are arranged in different circumferential layers taking the rotation axis of the mixing drum as the center, so that monitoring data of water content and temperature of different positions and different layers in the mixing drum can be obtained in real time, and timely and effective data support is provided for the identification of the mixing state in the mixing drum;
(4) the invention utilizes real-time monitoring data of water content and temperature to determine two indexes of the stirring state of concrete in the stirring cylinder, namely: the water content distribution discrete coefficient and the temperature distribution discrete coefficient can reflect the local state and the overall state of the concrete during stirring from two different angles of water content and temperature respectively, and accurately identify the stirring state and illegal operation of the concrete through the two indexes and the combination of objective natural rules;
(5) according to the invention, on the basis of the water content monitoring data, the intelligent control of the rotation speed of the mixing drum is realized by combining the adjustable range of the rotation speed of the mixing drum on the premise of ensuring the good state of concrete mixing, the rotation speed of the mixing drum can be intelligently adjusted when the bad condition occurs in the mixing state, so that the mixing state of the concrete gradually reaches the good state, the intelligent control of the rotation speed of the mixing drum is only involved when the mixing state is bad, the transportation cost of the concrete can be saved, and the quality of the concrete can be kept good in the transportation process;
finally, it should be noted that: the above description is only for the purpose of illustrating preferred embodiments of the present invention and is not to be taken in any way as limiting the scope of the present invention; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A concrete mixer truck monitoring method, comprising:
acquiring real-time data related to the stirring state of the stirring drum; the method comprises the following steps: acquiring real-time monitoring data of water content and temperature in different circumferential layers by taking a rotation axis of a mixing drum as a center during concrete mixing and mixer truck positioning information;
determining the stirring state of the stirring drum according to the acquired real-time data related to the stirring state of the stirring drum, wherein the stirring state is used for representing the uniform stirring degree of concrete in the stirring drum; the method comprises the following steps: determining a water content distribution discrete coefficient and a temperature distribution discrete coefficient according to the acquired monitoring data of the water content and the temperature in different circumferential layers by taking the rotation axis of the mixing drum as the center during the concrete mixing;
if the water content distribution discrete coefficient is smaller than or equal to a first threshold value, identifying the stirring state as a uniform stirring state, and keeping the rotation speed of the stirring drum unchanged at the default rotation speed;
if the water content distribution discrete coefficient is larger than a first threshold value and smaller than a second threshold value, identifying the stirring is in an uneven state, and adjusting the rotating speed of the stirring drum to reach the stirring even state again;
if the water content distribution discrete coefficient is larger than or equal to the second threshold value, the stirring state is further determined by combining the temperature distribution discrete coefficient:
a. at the moment, if the temperature distribution discrete coefficient is larger than or equal to the set threshold, the state of water adding in the midway is identified, and early warning is sent out;
b. at the moment, if the temperature distribution discrete coefficient is smaller than a set threshold value, the state is identified as a midway charging state, and an early warning is sent out;
wherein the first threshold is less than the second threshold;
determining whether early warning is needed or whether the working state of the mixing drum needs to be adjusted according to the mixing state of the mixing drum;
the specific determination method of the water content distribution discrete coefficient and the temperature distribution discrete coefficient is as follows:
(1) water content distribution dispersion coefficient
Wherein,
is the water content distribution discrete coefficient;
(2) coefficient of variation of temperature distribution
Wherein,
is the temperature distribution dispersion coefficient;
the first mentioned
The method for determining the stirring coagulation index of each circumferential layer comprises the following specific steps:
wherein,
is as follows
The stirring coagulation index of each circumferential layer;
2. The concrete mixer truck monitoring method according to claim 1, wherein when the rotation speed of the mixing drum needs to be adjusted, a manual adjusting mode or an intelligent adjusting mode is adopted, the manual adjusting mode is manually controlled by a driver, the intelligent adjusting mode is intelligently controlled by a system according to the change of the discrete coefficient of the water content distribution, and the concrete method is as follows:
wherein,
the output value is the rotating speed output value of the mixing drum;
3. A monitoring system applied to the concrete mixer truck monitoring method according to claim 1, wherein the system comprises:
the state monitoring module is used for acquiring real-time data related to the stirring state of the stirring drum; the method comprises the following steps: acquiring real-time monitoring data of water content and temperature in different circumferential layers by taking a rotation axis of a mixing drum as a center during concrete mixing and mixer truck positioning information;
the state identification module is used for determining the stirring state of the stirring drum according to the acquired real-time data related to the stirring state of the stirring drum, and the stirring state is used for representing the uniform stirring degree of concrete in the stirring drum; the method comprises the following steps: determining a water content distribution discrete coefficient and a temperature distribution discrete coefficient according to the acquired monitoring data of the water content and the temperature in different circumferential layers taking the rotation axis of the mixing drum as the center during the concrete mixing;
if the water content distribution discrete coefficient is smaller than or equal to a first threshold value, identifying the stirring state as a uniform stirring state, and keeping the rotation speed of the stirring drum unchanged at the default rotation speed;
if the water content distribution discrete coefficient is larger than a first threshold value and smaller than a second threshold value, identifying the stirring is in an uneven state, and adjusting the rotating speed of the stirring drum to reach the stirring even state again;
if the water content distribution discrete coefficient is larger than or equal to the second threshold value, the stirring state is further determined by combining the temperature distribution discrete coefficient:
a. at the moment, if the temperature distribution discrete coefficient is larger than or equal to the set threshold, the state of water adding in the midway is identified, and early warning is sent out;
b. at the moment, if the temperature distribution discrete coefficient is smaller than a set threshold value, the state is identified as a midway charging state, and an early warning is sent out;
wherein the first threshold is less than the second threshold;
and the state early warning adjusting module is used for determining whether early warning is needed or whether the working state of the mixing drum needs to be adjusted according to the mixing state of the mixing drum.
4. The concrete mixer truck monitoring system of claim 3, wherein the status monitoring module obtains real-time data comprising: and (3) real-time monitoring data of water content and temperature in different circumferential layers taking the rotation axis of the mixing drum as the center during concrete mixing.
5. The concrete mixer truck monitoring system of claim 4, further comprising:
the state identification parameter determining module is used for determining a water content distribution discrete coefficient and a temperature distribution discrete coefficient according to the acquired monitoring data of the water content and the temperature in different circumferential layers by taking the rotation axis of the mixing drum as the center during the concrete mixing;
and the state identification and judgment module is used for identifying and judging the stirring state of the stirring drum according to the determined water content distribution discrete coefficient and the temperature distribution discrete coefficient.
6. A computer device comprising a memory and a processor; the memory for storing a computer program; the processor, when executing the computer program, is configured to implement the concrete mixer truck monitoring method according to any one of claims 1-2.
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