Distributed measuring device for high-speed construction

Abstract

The invention belongs to the technical field of construction measurement, and particularly relates to a distributed measuring device for high-speed construction, which comprises a data processor, a surface layer temperature acquisition assembly, a plurality of groups of inner layer temperature acquisition assemblies and a positioning assembly, and is characterized in that the plurality of groups of inner layer temperature acquisition assemblies are respectively arranged on a plurality of measuring points; the positioning assembly is electrically connected with the data processor, the positioning assembly is used for acquiring the position of a measuring point and transmitting the position to the data processor, and the temperatures of the surface layer, the middle layer and the bottom layer of one measuring point are acquired at the same time through the surface layer temperature acquisition assembly and the multiple sets of inner layer temperature acquisition assemblies; and the temperatures of different layers are monitored at intervals through a plurality of measuring points, so that the local overheating or supercooling condition can be found in time, the problems of uneven compaction, segregation and the like caused by uneven temperature are avoided, and the asphalt laying quality is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of construction measurement, and in particular relates to a distributed measurement device for high-speed construction. Background Art

[0002] Asphalt concrete is generally used for paving roads on highways. During the construction of highway asphalt pavement, the compaction temperature of asphalt is a key factor in construction quality control. Dynamic detection of the compaction temperature and timely feedback and adjustment of construction measures are of great significance to ensuring construction quality and controlling construction costs.

[0003] At present, the temperature of asphalt mixture is mainly measured by temperature probes or infrared thermometers during construction. In actual projects, the length of a single asphalt paving is usually measured in kilometers and needs to be divided into several sections. If each section needs to be tested for temperature throughout the entire process by actual measurement, it will cost a lot of manpower and material resources. In addition, in a single measurement, the measuring points and the number of measurements are uncontrollable, and there is a lot of interference from human factors, resulting in extensive management.

[0004] At the same time, due to the obvious temperature difference between the inside and the surface of the paved asphalt concrete, the temperature at different depths will be different even at the same time point. Therefore, it is not representative to use a certain depth as the measurement point to evaluate the temperature of the paved asphalt layer.

[0005] Therefore, a device for measuring the temperature of asphalt is needed to collect the temperature of multiple positions of the asphalt during the paving process to improve the accuracy of the measurement. Summary of the invention

[0006] In order to solve the above problems existing in the prior art, the present invention provides a high-speed construction distributed measurement device to solve the measurement difficulties caused by the wide construction range and the large temperature difference between the inside and outside of the asphalt concrete after paving in the temperature measurement of asphalt paving.

[0007] The object of the present invention can be achieved by the following technical solutions: a distributed measurement device for high-speed construction, comprising a data processor, a surface temperature collection component and a plurality of groups of inner layer temperature collection components;

[0008] The plurality of groups of inner layer temperature acquisition components are respectively arranged at a plurality of measuring points, and further include a positioning component, the positioning component is electrically connected to the data processor, and the positioning component is used to obtain the position of the measuring point and transmit it to the data processor;

[0009] Any group of the inner layer temperature collection components includes a bottom layer temperature collection component and a middle layer temperature collection component;

[0010] The bottom layer temperature collection component, the middle layer temperature collection component and the surface layer temperature collection component are electrically connected to the data processor respectively; the bottom layer temperature collection component, the middle layer temperature collection component and the surface layer temperature collection component are used to collect the bottom layer and middle layer temperatures of the asphalt layer at the measuring point in real time respectively; the surface layer temperature collection component, the bottom layer temperature collection component and the middle layer temperature collection component transmit the collected temperature data to the data processor;

[0011] The surface temperature collection component includes an infrared camera, which is used to measure the surface temperature of the construction surface in real time;

[0012] The data processor generates a construction surface temperature distribution map according to the temperature data.

[0013] Preferably, it further comprises a roller position acquisition component, wherein the roller position acquisition component is electrically connected to the data processor;

[0014] The data processor obtains the location information and rolling time of the rolling section of the roller through the roller position acquisition component;

[0015] The data transmitted from the positioning component to the data processor are all time stamped.

[0016] Preferably, the data processor includes a data acquisition module and a distribution map generation module;

[0017] The data acquisition module is used to acquire the data uploaded by the surface temperature acquisition component, multiple groups of inner layer temperature acquisition components and the roller position acquisition component and integrate the data, and the integration processing includes format unification, denoising and smoothing of the data;

[0018] The distribution map generation module is used to fit the data uploaded by the surface temperature collection component and the multiple groups of inner layer temperature collection components to obtain road surface temperature values ​​respectively;

[0019] Then, based on the time information and the position information transmitted by the positioning component, a three-dimensional time-position-temperature construction surface temperature distribution map is generated. In the construction surface temperature distribution map, the data of a random point includes the position information and collection time of the measuring point, as well as the surface temperature, middle temperature and bottom temperature of the measuring point.

[0020] Preferably, the data processor also includes a surface temperature extraction module, which extracts data of rolling temperature segments based on the location information and time information of the rolling section from the data uploaded by the surface temperature acquisition component, and marks the rolling temperature segments.

[0021] Preferably, the data processor further comprises an alarm module, the alarm module sets a minimum threshold value of unrolled temperature and a minimum rolling temperature threshold value, the alarm module uses the minimum threshold value of unrolled temperature to monitor the temperature distribution diagram, and the control module sends an alarm signal when the minimum temperature value in the temperature distribution diagram is lower than the minimum temperature threshold value for a continuous measurement time;

[0022] The alarm module uses the rolling temperature threshold interval to monitor the asphalt temperature of the marked asphalt temperature section, and the control module sends an alarm signal for the measuring point where the minimum temperature value is less than the minimum rolling temperature threshold.

[0023] Preferably, the bottom layer temperature collection component and the middle layer temperature collection component are respectively arranged at the bottom layer and the middle position in the thickness direction of the asphalt structure at the measuring point in the form of embedded parts.

[0024] Preferably, the positioning component uses GPS.

[0025] The beneficial effects of the present invention are:

[0026] By setting up a surface temperature collection component and multiple groups of inner layer temperature collection components to simultaneously collect the temperatures of the surface, middle and bottom layers of a measuring point, and by distributing multiple measuring points at intervals on the construction surface, the temperature changes of the asphalt layer from the surface to the inside can be more comprehensively grasped, and the temperature gradient can be accurately analyzed to help construction personnel better understand the cooling process of the asphalt mixture and optimize the construction process. By monitoring the temperature of different layers, local overheating or overcooling can be discovered in time, avoiding problems such as uneven compaction and segregation caused by uneven temperature, thereby ensuring the quality of asphalt paving.

[0027] By monitoring the position of the roller, when multiple rollers are working at the same time, the asphalt rolling temperature of the roller can be accurately extracted from the asphalt temperature of the entire construction surface, thereby achieving comprehensive monitoring of the rolling temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0029] Figure 1 is a structural block diagram of the measuring device of the present invention;

[0030] Figure 2 It is a structural block diagram of the data processor of the present invention. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0032] Rolling temperature is the core link of temperature control: rolling temperature directly determines the compaction effect of asphalt mixture. If the rolling temperature is not appropriate, even if the temperature of other links is properly controlled, it may lead to insufficient or excessive compaction, affecting the quality of the road surface, so please refer to Figure 1-Figure 2 This embodiment provides a distributed measurement device for high-speed construction, including a data processor, a surface temperature collection component and multiple groups of inner temperature collection components; the surface temperature collection component includes an infrared camera, which is used to measure the surface temperature of the construction surface in real time, and the infrared camera can provide continuous and dynamic temperature change images. The infrared camera is installed on the top of the construction vehicle or at intervals on both sides of the construction road surface to ensure that the measurement surface can completely cover the construction road surface.

[0033] Multiple groups of inner layer temperature acquisition components are respectively arranged at multiple measuring points, and also include a positioning component, which can use GPS to locate the measuring point. The positioning component and the data processor are electrically connected, and the positioning component is used to obtain the position of the measuring point and transmit it to the data processor;

[0034] Since there is an obvious temperature difference between the inside and the surface of the paved asphalt concrete, the temperature at different depths will be different even at the same time point. Therefore, if a certain depth is used as a measuring point to evaluate the temperature of the paved asphalt layer, since the temperature detector can measure the temperature of the nodes in the area where the sensing probe is located, this will lack representativeness. Therefore, a group of inner layer temperature measurement components are set at a measuring point. Any group of inner layer temperature collection components includes a bottom layer temperature collection component and a middle layer temperature collection component. The bottom layer temperature collection component and the middle layer temperature collection component are respectively set at the bottom and middle positions of the thickness direction of the asphalt structure of the measuring point in the form of embedded parts. The embedded parts are embedded in the asphalt layer at the initial stage of paving. During the paving process, it is necessary to ensure the stability and compressive resistance of the paving. You can choose to set a group of inner layer temperature measurement components into a fixed device structure, and then embed the structure directly into the asphalt layer as an embedded part. Of course, according to the thickness of the paved asphalt layer, the number and arrangement of the inner layer temperature measurement components can be adjusted according to the actual construction, and the number of temperature measurement components set in the thickness direction can be adjusted according to actual needs.

[0035] The GPS positioning information includes the location information of the measuring point and the precise location information between the bottom layer temperature collection component and the middle layer temperature collection component.

[0036] The bottom layer temperature collection component, the middle layer temperature collection component and the surface layer temperature collection component are electrically connected to the data processor respectively. The bottom layer temperature collection component, the middle layer temperature collection component and the surface layer temperature collection component are used to collect the bottom layer and middle layer temperatures of the asphalt layer at the measurement point in real time respectively. The surface layer temperature collection component, the bottom layer temperature collection component and the middle layer temperature collection component transmit the collected temperature data to the data processor. The data processor generates a construction surface temperature distribution map based on the temperature data. Each time node in the construction surface temperature distribution map contains the surface temperature, middle layer temperature and bottom layer temperature of the asphalt paving at the corresponding position. The temperature change inside the asphalt layer can be intuitively understood through the construction surface temperature distribution map.

[0037] The surface temperature collection components and multiple groups of inner layer temperature collection components can not only measure the surface temperature of the asphalt layer, but also measure the temperature of the middle and bottom layers at the same time. Through the multi-layer temperature collection components, the temperature changes from the surface to the inside of the asphalt layer can be fully understood. Because different layers of the asphalt layer will experience different temperature changes during the construction process, especially from paving to rolling, the temperature difference between the surface and bottom layers is large. Through multi-layer temperature synchronous monitoring, the temperature gradient can be accurately analyzed to help construction personnel better understand the cooling process of the asphalt mixture and optimize the construction process. By monitoring the temperature of different layers, local overheating or overcooling can be discovered in time to avoid problems such as uneven compaction and segregation caused by uneven temperature, thereby ensuring the quality of asphalt paving. The surface temperature of the asphalt layer is measured by the surface temperature collection component, and the temperature change of the inner layer of the asphalt is collected by the inner temperature collection component. The surface temperature is measured using infrared imaging, covering the entire construction surface. The temperature collection components set in the middle and bottom layers are set at intervals inside the asphalt layer to sample and measure the internal temperature. Compared with the surface of the asphalt layer, there is generally not a large temperature change inside the asphalt layer, so temperature monitoring can be achieved through the temperature collection components set at intervals.

[0038] In order to ensure the temporal consistency of the data transmitted from each measuring or collecting device to the data processor and facilitate subsequent processing, in one embodiment, the measuring device also includes a roller position collection component; the roller position collection component is electrically connected to the data processor; the role of the roller is to measure the flatness of the asphalt paving measured by the operator or to repeatedly roll the road surface after the asphalt is initially laid to achieve the compaction of the road surface to the standard. The roller needs to roll the road surface back and forth to achieve the flatness requirement, and during the rolling process of the roller, the rolling temperature refers to the temperature of the asphalt mixture when it is rolled after paving. Rolling temperature is one of the key factors affecting the compaction, density and surface flatness of the asphalt mixture. The appropriate rolling temperature can ensure that the asphalt mixture has sufficient plasticity during the rolling process, so that it can be compacted to the required density to form a uniform and dense road surface structure.

[0039] Generally, concrete needs to go through initial compaction, recompacting and final compaction. Initial compaction: The purpose of initial compaction is to initially stabilize the mixture and prevent the mixture from shifting or sliding after paving. Recompacting: Recompacting is the main compaction stage, in which the mixture is repeatedly rolled by heavy rollers to achieve the compaction required by the design. Final compaction: The purpose of final compaction is to eliminate wheel marks and unevenness on the surface and ensure the flatness and smoothness of the road surface. Generally, it is necessary to set the temperatures for initial compaction, recompacting and final compaction to achieve different construction needs.

[0040] In order to master the rolling distance of the roller so as to detect the rolling temperature in real time, a roller position acquisition component is also included. The roller position acquisition component is electrically connected to the data processor. The roller position acquisition component can use the built-in positioning system of the roller or a separately set positioning device to locate the position of the roller. The data processor obtains the location information and rolling time of the rolling section of the roller through the roller position acquisition component. The data transmitted to the data processor by the positioning component are all timestamped. The rolling position and rolling time of the roller are determined according to the relationship between time and position. The unification of time requires ensuring that the roller position acquisition component and the positioning component communicate with the data processor under the same network time protocol to ensure time consistency.

[0041] Furthermore, the data processor includes a data acquisition module and a distribution map generation module. The data acquisition module is used to acquire the data uploaded by the surface temperature acquisition component, multiple groups of inner layer temperature acquisition components and roller position acquisition components and integrate the data. The integration processing includes unifying the format of the data, denoising and smoothing, using the timestamp and data format for processing, and communicating under the same transmission environment to realize data transmission; the distribution map generation module is used to fit the data uploaded by the surface temperature acquisition component and multiple groups of inner layer temperature acquisition components to obtain the road surface temperature value respectively; and then generate a time-position-temperature three-dimensional construction surface temperature distribution map according to the position information and time information transmitted by the positioning component. In the construction surface temperature distribution map, the data of a random point includes the position information and acquisition time of the measuring point and the surface temperature, middle temperature and bottom temperature of the measuring point. The construction surface temperature distribution map not only shows the temperature changes in different areas, but also reflects the temperature change trend over time and space. This is useful for analyzing the cooling process of the asphalt layer, predicting the temperature change rate and optimizing the rolling time.

[0042] By monitoring the position of the rollers, when multiple rollers are working at the same time, the rolling temperature of the rollers can be accurately extracted from the asphalt temperature of the entire construction surface, realizing comprehensive monitoring of the rolling temperature. Of course, in order to improve the accuracy of the measurement, the temperature of the bottom and middle layers of the asphalt can be extracted accordingly, expanding the sample range and achieving more accurate measurement.

[0043] During the rolling process, the steel wheel of the roller rotates and applies additional pressure to the surface of the asphalt. The surface temperature of the steel wheel usually rises due to the pressure and friction. Therefore, there may be a large difference in the temperature of the surface before and after rolling. Therefore, it is necessary to record the data of the rolling area specifically to prevent the system from alarming or identifying it as abnormal. The data processor also includes a surface temperature extraction module; the surface temperature extraction module extracts the data of the rolling temperature segment from the data uploaded by the surface temperature acquisition component according to the location and time information of the rolling section, and marks the data of the rolling temperature segment within the time period.

[0044] Furthermore, the data processor also includes an alarm module, which sets the minimum threshold of unrolled temperature and the minimum rolling temperature threshold. The alarm module uses the minimum threshold of unrolled temperature to monitor the temperature distribution diagram. If the continuous measurement time of the minimum temperature value in the temperature distribution diagram is lower than the minimum temperature threshold, the control module sends an alarm signal. The monitoring of the minimum threshold of unrolled temperature belongs to routine monitoring, and the threshold should be adjusted according to different standards required according to different construction processes. The alarm module uses the rolling temperature threshold interval to monitor the asphalt temperature of the marked asphalt temperature section. For the measurement point whose minimum temperature value is less than the minimum rolling temperature threshold, the control module sends an alarm signal. Specifically, the setting of the minimum threshold of unrolled temperature and the minimum rolling temperature threshold should be comprehensively evaluated according to the type of asphalt mixture, construction environment conditions, construction specification requirements, historical data and laboratory test results. The minimum threshold of unrolled temperature and the minimum rolling temperature threshold are adjusted accordingly according to the construction process to meet the construction needs.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A distributed measurement device for high-speed construction, characterized in that: It includes a data processor, a surface temperature collection component and multiple groups of inner temperature collection components; The plurality of groups of inner layer temperature acquisition components are respectively arranged at a plurality of measuring points, and further include a positioning component, the positioning component is electrically connected to the data processor, and the positioning component is used to obtain the position of the measuring point and transmit it to the data processor; Any group of the inner layer temperature collection components includes a bottom layer temperature collection component and a middle layer temperature collection component; The bottom layer temperature collection component, the middle layer temperature collection component and the surface layer temperature collection component are electrically connected to the data processor respectively; The bottom layer temperature collection component, the middle layer temperature collection component and the surface layer temperature collection component are used to collect the bottom layer and middle layer temperatures of the asphalt layer at the measuring point in real time respectively; the surface layer temperature collection component, the bottom layer temperature collection component and the middle layer temperature collection component transmit the collected temperature data to the data processor; The surface temperature collection component includes an infrared camera, which is used to measure the surface temperature of the construction surface in real time; The data processor generates a construction surface temperature distribution map according to the temperature data.

2. A distributed measurement device for high-speed construction according to claim 1, characterized in that: It also includes a roller position acquisition component, which is electrically connected to the data processor; The data processor obtains the location information and rolling time of the rolling section of the roller through the roller position acquisition component; The data transmitted from the positioning component to the data processor are all time stamped.

3. A distributed measurement device for high-speed construction according to claim 2, characterized in that: The data processor includes a data acquisition module and a distribution map generation module; The data acquisition module is used to acquire the data uploaded by the surface temperature acquisition component, multiple groups of inner layer temperature acquisition components and the roller position acquisition component and integrate the data, and the integration processing includes format unification, denoising and smoothing of the data; The distribution map generation module is used to fit the data uploaded by the surface temperature collection component and the multiple groups of inner layer temperature collection components to obtain road surface temperature values ​​respectively; Then, based on the time information and the position information transmitted by the positioning component, a three-dimensional time-position-temperature construction surface temperature distribution map is generated. In the construction surface temperature distribution map, the data of a random point includes the position information and collection time of the measuring point, as well as the surface temperature, middle temperature and bottom temperature of the measuring point.

4. A distributed measurement device for high-speed construction according to claim 3, characterized in that: The data processor also includes a surface temperature extraction module, which extracts data of rolling temperature segments from data uploaded by the surface temperature acquisition component according to location information and time information of the rolling section, and marks the rolling temperature segments.

5. A distributed measurement device for high-speed construction according to claim 4, characterized in that: The data processor further comprises an alarm module, wherein the alarm module sets a minimum threshold value of unrolled temperature and a minimum rolling temperature threshold value, and the alarm module uses the minimum threshold value of unrolled temperature to monitor the temperature distribution diagram, and when the minimum temperature value in the temperature distribution diagram is lower than the minimum temperature threshold value for a continuous measurement time, the control module sends an alarm signal; The alarm module uses the rolling temperature threshold interval to monitor the asphalt temperature of the marked asphalt temperature section, and the control module sends an alarm signal for the measuring point where the minimum temperature value is less than the minimum rolling temperature threshold.

6. A distributed measurement device for high-speed construction according to claim 1, characterized in that: The bottom layer temperature collection component and the middle layer temperature collection component are respectively arranged at the bottom layer and the middle position in the thickness direction of the asphalt structure at the measuring point in the form of embedded parts.

7. The distributed measurement device for high-speed construction according to claim 1, characterized in that: The positioning component uses GPS.

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