• 专利附录
  • 专利说明
  • 权利要求
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    • 专利摘要:
    system comprising a temperature measurement device for the repeated detection of temperature values of a pavement laid by a paver, paver, computer-readable method and storage media, with computer-executable instructions that, when executed, perform the method of control. a system (100) comprising a device for measuring temperatures (120) for the repeated detection of temperature values of a pavement (3) laid by a paver (1). the system (100) is configured to check a temperature value of a specific measurement point (351, 351a, 351b) at at least two different moments in time by means of the device for measuring temperatures (120), said point specific measurement (351, 351a, 351b) situated in an area of the laid pavement (3). the system (100) also comprises an evaluation unit (140, 140a), said evaluation unit (140, 140a) being configured to determine the cooling behavior of the laid floor (3). this is done by making use of the at least two different temperature values that have been detected for the specific measurement point (351, 351a, 351b) at at least two different points in time.
    公开号:BR102015020479B1
    申请号:R102015020479-5
    申请日:2015-08-25
    公开日:2021-07-13
    发明作者:Henning Delius；Arnold Rutz；Martin Buschmann
    申请人:Joseph Vogele Ag；
    IPC主号:
    专利说明:

    [001] The present invention relates to a system comprising a device for measuring temperatures for the repeated or continuous detection of temperature values of a pavement laid by means of a paver, and in particular to a system for determining or documenting the laying temperature and the cooling behavior of the laid pavement.
    [002] A paver is a machine by which joined or separate pavements or layers can be produced. Once a laid pavement can be used, subsequent improvements require substantial efforts, such as closing sections of road or building parts. Thus, quality control is of great importance in the field of asphalt laying. A system that allows the quality of asphalt laying or the quality of asphalt laid to be measured is shown in WO 2004/034351 A2. In particular, it is possible to manually check the asphalt properties and, in so doing, individual measurement processes can be linked to site data.
    [003] An important variable of the process in road construction, in particular, is the processing temperature of the laid pavements, such as asphalt or bitumen. Processing temperature substantially influences use properties such as stability, layer adhesion and service life of the laid pavements. Pavers typically distribute the paving material and pre-compact the surface of the paving material with a ruler, which is attached to the rear edge of the paver and then removed. The pavement thus laid is subsequently further compacted by pressure rollers. Like other factors, such as environmental and climatic conditions during laying, the material temperature at different stages of the laying process influences the efficiency and success of a paving job.
    [004] Processing, for example, paving material under ideal temperature conditions has long been recognized as important, but such processing often requires manual control measurements by support and operational personnel. Paving material is typically obtained at a comparatively higher temperature in an asphalt or bitumen plant. Depending on the distance a filling machine must travel in order to reach the job site, as well as traffic and ambient temperature, the asphalt can cool down before being applied. Furthermore, the progress of paving machines and compaction machines or road rollers may vary. The extent of cooling, once the paving material has finally reached the paving machine or paver, may vary depending on the temperature in the application, environmental factors, etc. In certain cases, the paving material can segregate inside the paving machine, so there can be pockets or accumulations of relatively colder and relatively warmer materials inside the machine, leading to unexpected and mostly punctual temperature gradients, when this The last one is distributed on the work surface. In a typical laying process, the paving material is unloaded, distributed by the paver or paver, and subsequently pre-compacted by means of a ruler, which is then ready to be further compacted by the various compacting machines. During this process, the material temperature can be significantly deviated from the expected temperature. Additionally, material temperature may be non-uniform from one paved region to another, due to changing weather conditions or due to unintended segregation or poor mixing.
    [005] Due to the importance of the laying temperature of the pavement in the laying process, the measurement of the laying temperature becomes increasingly important and, in the last few years, several solutions have been developed that satisfy the demand for metrological tests of the temperature of placement, and thus also facilitate subsequent improvements. For this purpose, known systems measure the laying temperature behind the paver, in particular behind the ruler. Available systems range from a set of pyrometers to thermal or infrared scanners and also articulated pyrometers. These systems are used to obtain a more or less real temperature profile behind the paver.
    [006] Other systems for obtaining information on the placing temperature are based on data obtained by an infrared camera, whose image data are arithmetically converted into scanning lines by means of a suitable software. These lines from a verified thermal image show the temperature profile at a specified distance from the paver or the trailing edge of the ruler. Each line can here represent the temperature profile of the paved layer transverse to the paver's direction of travel, after the individual lines have been combined to form a flat image, the so-called temperature map or the two-dimensional temperature profile. These images can subsequently be used to assess the temperature distribution of the laid asphalt. As mentioned above, the distribution of temperatures as uniformly as possible is here a quality feature, as this will provide uniform preconditions for subsequent compaction by means of pressure rollers.
    [007] WO 00/70150 Al discloses a system for monitoring temperatures of the type in question, which is fixed in position on a paver and which scans the temperatures of the pavement laid, line by line. The obtained temperature data can either be used directly for ruler control or communicated to other machines in the paving train in the laying process.
    [008] DE 10 2008 058 481 Al describes an evaluation of this temperature profile during the paving process. In particular, the adaptation of a paving process to the individual machines of the paving train is described. Especially based on the information obtained from the asphalt laid, the distance between the compaction rollers and the paving machine or paver is adapted so that the asphalt is not processed by the subsequent compaction rollers within a temperature range called " soft zone". Therefore, a comparison between predicted temperatures and actual temperatures is suggested. If there is a difference between the predicted temperature and the actual temperature verified, the machines are decelerated or accelerated as necessary. For temperature prediction, a model that uses external atmospheric conditions, such as ambient temperature, is used. If the model predicts a comparatively slow cooling due to the high ambient temperatures, the machines can travel at a comparatively slower speed or so that the distance between them is increased accordingly.
    [009] The measurement of the temperatures of the known methods of the laying process, however, does not allow any direct conclusions regarding the actual cooling behavior of the laid pavement. In case known measurement systems make use of point-to-point or line-to-line scans, simulation of the cooling behavior by means of models is attempted. Models take into account external factors such as atmospheric conditions. Thus, these solutions require other sensors, such as wind or rain gauges, and the user must manually enter the cloudiness into the system at the time in question. To improve the quality of the measurement results and to simplify the method it will therefore be desirable to be able to do so without these additional sensors and manual inputs.
    [010] A direct measurement or determination of the cooling behavior of the laid pavement, however, is not possible through known systems. Even in systems where the laying temperature is continuously detected in order to obtain a true image of laid pavement temperatures, it is impossible to draw conclusions regarding the cooling behavior or cooling rate of the laid pavement, as the lines of the image thermal values were recorded during a continuous placement process at the same moment in time and at the same distance from the ruler.
    [011] It is, therefore, the objective of the present invention to provide a better system for the detection, by means of a device for measuring temperatures, of the temperature values of a pavement placed by a paver, said system allowing, in in particular, a better measurement result and a reduction in the number of sensors needed or the number of parameters that must be entered manually.
    [012] This objective is achieved through the features of claim 1. A paver according to the present invention and a method according to the present invention are disclosed, as well as a computer readable storage media with the instructions of a corresponding control method, according to the present invention, by means of the features of the additional independent claims 13, 14 and 15. Further improved developments of the invention are defined by the additional features of the sub-claims.
    [013] The invention relates in particular to a system comprising a device for measuring temperatures for the repeated detection of temperature values of a pavement laid by a paver. The system is here configured to detect a temperature value of a specific measurement point in the area of the pavement placed at at least two different moments in time, by means of the device for measuring temperatures. The system also comprises an evaluation unit, said evaluation unit being configured to determine the cooling behavior of the laid pavement. Thus, it makes use of at least two different temperature values that have been detected for the specific measurement point at at least two different points in time.
    [014] The respective time interval between the at least two different moments in time can be predetermined here. This allows the assessment unit to determine or predict the cooling behavior of the laid pavement, making use of the so-called time interval between the at least two different moments in time and the at least two detected temperature values for the specific measurement point .
    [015] The temperature values detected are preferably temperature values of the pavement laid, which are detected by the device for measuring temperatures during or after pre-compaction by means of a paver ruler. In this case, the device for measuring temperatures can be configured so as to detect temperature values at a respective predetermined or easily verifiable distance to the paver or ruler. The exact position of the measuring points can thus be determined or recognized more easily. For example, a specific measurement point can be verified or recognized based on its respective distance to the paver or ruler at at least two different points in time during the laying process. As the time period between measurements, as well as the physical distance between measurements, are known or can be verified, the detected data can be used to represent the temperature in time and to verify a measurement for cooling or pavement surface cooling rate.
    [016] According to another embodiment of the present invention, the device for measuring temperatures is configured so that it can detect, at each measurement time, a plurality of temperature values in a two-dimensional area on the surface of the laid pavement. This two-dimensional area is also called the detection area of the device for measuring temperatures. Thus, the at least two different points in time at which the temperature measuring device performs the temperature measurement correspond to the at least two different two-dimensional detection areas. These two-dimensional areas are chosen so that they overlap. Furthermore, the specific measurement point is chosen so that it lies in the region of the superposition of the at least two detection areas. In this way, multiple measurements are performed at the specific measurement point of the pavement placed at different points in time, without the need to perform any additional measurements.
    [017] According to another embodiment, the temperature values are detected line by line through the device for measuring temperatures, so that each detected line represents a profile of the pavement temperatures placed transverse to the direction of travel of the paver. In the case of a two-dimensional detection area of the device for measuring temperatures, it is also possible to simultaneously detect the temperature values of a plurality of lines at each measurement time.
    [018] According to another embodiment of the present invention, the system or device for measuring temperatures comprises units for fastening to a paver or ruler. The detection of temperature values by means of the temperature measuring device is carried out continuously at periodic intervals, or depending on the speed of the laying process or the paver. These features allow simple determination of the position of the measuring points and the time intervals between measurements.
    [019] According to another embodiment of the present invention, temperature values are measured at a plurality of specific measurement points at each of at least two different points in time. A simultaneous detection of temperature values for a plurality of known measurement points will be advantageous in that the cooling behavior of the laid pavement can be verified on the basis of an average of the detected temperature values of this plurality of measurement points. Thus, it is possible to reduce the influence of incorrect measurements or of punctual material or placement failures in determining the cooling behavior. Possible formations of an average value according to an embodiment comprise an arithmetic mean, a median, a square mean and/or a weighted arithmetic mean of the detected temperature values from the plurality of measurement points.
    [020] According to another embodiment of the present invention, the evaluation unit is configured to determine the cooling behavior of the pavement placed based on a predetermined mathematical model. This mathematical model can take into account at least one additional parameter, such as base temperature, pavement thickness, ambient air temperature, air humidity, cloud cover, wind speed and/or other material property of the pavement, as the composition of the asphalt.
    [021] According to another embodiment of the invention, the evaluation unit is also configured to determine a control factor of the pavement placement process. This control factor can comprise a machine speed of the laying process, a machine start or stop signal of the laying process and/or a conveyor belt speed of the laying process. Thus, the laying process can be more effectively adapted to the actual temperature, as the pavement cooling behavior verified from direct measurements is used as a basis. The quality of the laid floor is therefore improved, as the speed of the laying process can be adapted to the actual laying temperature in an improved way.
    [022] The device for measuring temperatures according to an embodiment of the present invention comprises an infrared camera, an infrared scanner, a pivotable pyrometer, a set of pyrometers and/or an in-line scanning camera.
    [023] Furthermore, there is provided a paver comprising a system or device for measuring temperatures according to another embodiment of the present invention. The device for measuring temperatures is advantageously integrated in a thermographic module here. Furthermore, the evaluation unit can be integrated into the thermographic module. Alternatively, an external evaluation unit is provided. According to another embodiment of the present invention, a thermographic system or module is also provided, which is carried out independently or separately from the paver. According to another embodiment of the present invention, such thermographic system or module is configured as a mobile device.
    [024] In addition, the present invention relates to a corresponding method for determining the behavior of cooling, as well as a computer-readable storage media with computer-executable instructions that, when executed, perform the type control method in question.
    [025] Embodiments according to the present invention will be described with reference to the following drawings below, in which: Figure 1 shows a system including device for measuring temperatures according to an embodiment of the present invention, Figure 2 shows a paver for detecting the pavement temperature during the laying process according to an embodiment of the present invention, Figure 3 shows a two-dimensional temperature profile of the laid pavement, which has been combined line by line, Figures 4A, 4B and 4C show different two-dimensional areas for detecting temperature values by means of the device for measuring temperatures at different points in time according to an embodiment of the present invention. Figure 5 shows different two-dimensional detection areas of Figure 4A, 4B and 4C, Figure 6 shows a method for repeatedly detecting temperature values and determining behavior of the cooling according to an embodiment of the present invention, and Figure 7 shows a control method according to an embodiment of the present invention, which is performed when instructions from a computer readable storage media are executed.
    [026] Figure 1 shows a system 100 according to an embodiment of the present invention, comprising a device for measuring temperatures 120 and an evaluation unit 140, an evaluation unit 140 and the device for measuring temperatures 120 communicate with each other for the purpose of transmitting data. According to one embodiment, the device for measuring temperatures 120 and the evaluation unit 140 are integrated in a thermographic module 5.
    [027] According to another embodiment, an evaluation unit 140a is mounted outside or separately from the thermographic module 5 and thus especially remote from the device for measuring temperatures 120. For this purpose, the evaluation unit 140a can exchange data with the thermographic module 5 via a wired or wireless communications link. In the case of an external evaluation unit 140a, both the thermographic module 5 and the evaluation unit 140a may comprise an interface module (not shown), which provides communications and the exchange of data via a known communications standard. Preferably, known communications standards are used for this purpose, such as Bluetooth, WLAN according to one of the IEEE 802.llx standards (also called Wi-Fi) or LAN according to one of the IEEE 802.3x standards (also called of Ethernet). However, other communications links can also be used, such as a mobile radio link. An external evaluation unit 140a has the advantage that the thermographic module 5 does not require any processing power and memory resources for the calculations of an evaluation unit. In addition, a smart phone, PC, laptop, tablet device or similar multifunction device can be used as an external 140a evaluation unit. In this case, suitable control and/or evaluation software, such as a user program or an application, can be developed or installed on the external device 140a.
    [028] Alternatively, the internal evaluation unit 140 or the external evaluation unit 140a will only be used as an interface or gateway to a server connected thereto or a cloud service connected thereto. The server or cloud service provides, in this case, the control and/or evaluation functionality of the evaluation unit according to the present invention. The control described here and/or the evaluation functionality of the evaluation unit according to the present invention can also be distributed to the evaluation unit 140, 140a and a server or cloud service connected to it and/or the device for the measurement of temperatures 120.
    [029] The device for measuring temperatures 120 preferably comprises an infrared camera (which is also called thermal imaging camera, thermographic camera or thermal imager), said infrared camera being able to operate in a line-to-line scanning mode . Typically, infrared cameras or in-line scanning cameras provide the possibility of measuring all lines in a substantially rectangular detection area of the camera. This chamber allows individual lines to be selected in order to produce the respective measured temperature values of that line or of several selected lines of the chamber. For continuous temperature detection of a laid pavement, the line-by-line sweep of the laid pavement will be advantageous. For documentation of the laying process, continuously detected surface temperature values can be recorded. For this purpose, the thermographic module 5 or the evaluation unit 140, 140a may comprise a storage module (not shown). Alternatively or additionally, the obtained data can be suitably transmitted to a connected server or cloud service for the purpose of storage, for further processing or for documentation.
    [030] According to another embodiment of the present invention, an infrared scanner or a thermal scanner, a pivotable pyrometer or an array of pyrometers comprising a plurality of pyrometers are provided. These can be provided instead of the infrared chamber 120, as well as in addition, as shown in the other optional sensor device 130 in Figure 1. In the case of a plurality of devices for measuring temperatures 120 and 130, the detected values of temperatures according to the described embodiments of the invention refer to the respective detected values of temperatures of these devices for measuring temperatures, even if this is not explicitly mentioned. According to another embodiment of the invention, the optional sensor device 130 is another sensor for measuring the base temperature and/or the ambient temperature.
    [031] It will be advantageous to configure the evaluation unit 140 and/or 140a so that the cooling behavior of the laid pavement 3 is determined based on the temperature values detected by the device for measuring temperatures 120. The determination takes place during laying and allows the verified cooling behavior to be taken into account in controlling the placement process. Due to the importance of the pavement laying temperature during the laying process, in particular with respect to the compaction of the layers by machines (compressor rollers) following paver 1, the laying process carried out by means of the individual machines of the paving train is preferably adapted to the temperature of placement. For this, there are mathematical models or lookup tables to determine an adequate control factor for the process of placing the parameters previously checked or executed. These parameters to be performed or measured, for example, are base temperature, pavement thickness, ambient air temperature, air humidity, cloud cover, wind speed and/or other pavement material properties , like the composition of the asphalt. These environmental and climatic factors essentially serve to estimate the cooling behavior, in order to address the actual processing temperature during placement in the best possible way and to optimize the placement process through an adequate deceleration or acceleration of the machines that are part of the process. Verified control factors of the placement process can comprise machine speed of the placement process, a machine start or stop signal of the placement process, or a conveyor belt speed of the placement process. These control factors can be defined or retrofitted accordingly.
    [032] Making use of the direct determination of the cooling behavior of pavement 3 according to the present invention, the required number of manual entries and the additional measurement of environmental and climatic parameters can also be reduced or said entries and measurements become completely superfluous. Likewise, the invention thus makes it possible to dispense with the respective other sensors for measuring environmental and climatic parameters. This facilitates handling during the placement process, leads to less complex systems and results and consequently less error-prone in an improved control and monitoring of the placement process. According to an alternative provided by another embodiment of the present invention, the cooling behavior verified from direct measurements is used, in addition to environmental and climatic parameters, to determine the temperature profile and for the subsequent control of the placement process. This achievement further improves the accuracy of control and monitoring of the placement process.
    [033] Figure 2 shows in an exemplary way a paver 1 in a plane 4 during the laying of a pavement 3, for example, asphalt, by means of a ruler 2 pulled by the paver 1. In the embodiment shown, the roof of the paver 1 it has fixed to it a thermographic module 5 by means of fixing units 5a. The thermographic module 5, which comprises at least the device for measuring temperatures 120 of the system 100 according to Figure 1, is positioned at a level h above the floor 3, being configured to detect the temperature of an area of the laid floor 3 at a distance b behind thermographic module 5, i.e. corresponding to height h, at a distance a from thermographic module 5. Temperature detection can preferably be done line-by-line in a direction transverse to the direction of travel 300 of paver 1 along the width of the laid pavement 3. Thus, the exact location or exact measurement point on pavement 3 can be checked or determined at each temperature measurement of the temperature measuring device 120. Alternatively, the thermographic module 5 or the temperature measuring device 120, 130 of system 100 can be attached to a ruler.
    [034] As the period of time between measurements, as well as the distance between measurements are thus known or can be verified, the detected temperature data can be used to represent the temperature in time and to verify a measurement of cooling as well. or the rate of cooling of the pavement surface.
    [035] According to one embodiment, a general record of comparatively large areas of laid pavement 3 is also established at predetermined time intervals during temperature detection. This is preferably done using the device for measuring temperatures 120 for the line-by-line sweep of the pavement placed behind the paver 1 or after pre-compaction by the ruler 2. Figure 3 shows in an exemplary way this general record 340 that represents the laid pavement temperature profile 3, which was established by combining or condensing the individual scan lines 311, 321, 331 of a two-dimensional area temperature profile or a so-called temperature map. Shown here are the surface temperatures of the laid pavement detected by means of the temperature measuring device 120, in particular it is possible to discern the temperature differences between the different locations or measuring points of the pavement 3. In Figure 3 and 4A to 4C , the direction of travel 300 of paver 1 is from right to left so that, for example, line 311 has been detected before line 321. This general record of the two-dimensional temperature profile can be stored for documentation purposes or streamed to a server or cloud service.
    [036] The respective Figures 4A to 4C show the detected data of pavement 3 temperatures at different moments in time during the laying process or during detection through thermographic module 5 and its device for measuring temperatures 120. A two-dimensional area 310 shown in Figure 4 A was detected by the device for measuring temperatures 120 during measurement at a moment in time tl. Area 310 exemplarily shows five scan lines each comprising five measurement points or locations on the surface of the pavement 3. The number of measurement lines and points, however, may vary and is especially dependent on the scanning line or infrared camera. used. According to another embodiment of the invention, only a two-dimensional temperature profile 310 is detected, without the provision of explicit lines. As shown in Figure 4A, the two-dimensional detection line or area 310 of the temperature measuring device 120 can cover the entire width of the pavement 3. However, according to another embodiment of the invention, this is not required, so the detection area 310 of the temperature measuring device 120 can only cover part of the entire width of the floor 3. Especially the margins of the floor 3 may not be included here.
    [037] The temperature measurement according to the example of Figure 4A takes place at the moment in time tl. According to an embodiment of the invention, the temperature values of a line 311 are detected at the moment of time t1. This is done, for example, to establish the aforementioned map of pavement temperatures. In an exemplary way, three specific measurement points 350, 351 and 352 are highlighted in Figure 4A, the measurement points 350 and 351 being located on said line 311, considering that the measurement point 352 is located outside of said line 311. Correspondingly, one or a plurality of measurement points 350, 351, 352 can be identified in a two-dimensional profile of detected temperatures 310 without an explicit raster of lines. As the position and/or orientation of the thermographic module 5 or the device for measuring temperatures 120, 130 is known, the exact position of the measuring points 350, 351, 352 on the floor 3 can be predetermined or verified. In the first case, the evaluation unit 140 can predetermine the exact position of the measuring points which are subsequently used by the temperature measuring device 120, 130 for the purpose of the measurement. In the case of an external evaluation unit 140a, the measuring points predetermined by an evaluation unit can be transmitted to thermographic module 5.
    [038] Figure 4B shows, according to the example of Figure 4A, the temperature measurement by means of the device for measuring temperatures 120 at a second moment at time t2 during placement, said second moment at time t2 coming after said moment in time tl. According to an embodiment of the invention which provides for line-by-line scanning, the moment in time t2 refers to the detection of a second line 321 within the detection area 320 of the device for measuring temperatures 120. In comparison with the area of detection 310 at the moment in time t1, the two-dimensional detection area 320, which is detected by the temperature measuring device 120 at the moment in time t2, has migrated further to the left according to the direction of travel 300 of the paver 1. The measurement points highlighted in Figure 4B are again the three specific measurement points 350, 351 and 352 according to Figure 4A which, however, now migrate to the right in a direction opposite to the paver's direction of travel 300. For better discrimination, the three specific measurement points in Figure 4B are indicated by 350a, 351a and 352a, in order to illustrate that, on the one hand, these measurement points are located in the same absolute positions of floor 3 as in Figure 4A at the moment in time tl. On the other hand, the detection of temperatures at these specific measurement points or absolute positions takes place at a second moment in time t2 and refers to a second measurement process. For further illustration, the first measurement process performed at the moment in time t1 and the corresponding detection area 310, as well as the line 311 of the latter, are also shown by means of a broken line in Figure 4B.
    [039] In a manner corresponding to that shown in Figure 4B, Figure 4C shows a third measurement process at moment in time t3 that comes after a moment in time t2. This figure shows the two-dimensional detection area 330 and its verified temperature profile line 331 at a point in time t3. Compared to detection areas 310 and 320 at points in time tl and t2, the three highlighted measurement points 350b, 351b and 352b migrate at point in time t3 in detection area 330 further to the right, in a direction opposite to the travel direction 300, as the paver 1 and, next to it, the thermographic module 5 or the temperature measuring device 120, move further to the left in the travel direction 300.
    [040] Thus, the individual measurement points on the laid pavement 3 go through a plurality of records in the part of the device for measuring temperatures 120, which are made at different and successive moments in time. The three records 310, 320, 330 at points in time tl, t2 and t3, according to the example in Figure 4A to 4C, are again compared separately with each other in Figure 5. These different temperature measurements for the same point on pavement 3, for example, for the measuring point 351, 351a, 351b can be used to determine the actual cooling behavior of the laid pavement 3. For this, the time intervals between the different temperature measurements at moments are used. at time tl, t2 and t3. These time intervals can be specified in advance, for example as periodic intervals, which means that the evaluation unit 140, 140a knows the time intervals between measurements. According to an alternative provided by another embodiment, the time interval of the measurements can be adapted to the laying process, in particular to the speed with which the pavement to be detected is laid. In that case, time intervals or absolute measurement times can be revealed to the evaluation unit 140, 140a.
    [041] According to an embodiment of the present invention, a specific measurement point, for example, location 351, is predetermined or specified for each measurement according to the actual movement of the device for measuring temperatures 120 in the direction of travel 300. In this regard, the evaluation unit 140, 140a can determine or specify the specific measurement point or points and make them known to the temperature measuring device 120, 130 or thermographic module 5. Alternatively, the point Specific measurement on the pavement, for example location 351, can subsequently be verified from the measured two-dimensional detection data 310, 320 and 330 based on the known position of the device for measuring temperatures 120, 130 relative to paver 1 and to the ruler 2. As an alternative, the position of the device for measuring temperatures 120, 130 relative to the paver 1 and to the ruler 2 is specified, thus being a quantity. of invariant and known. Determining or specifying the position of a specific measurement point is thus possible at any point in time since, as described above, the distance to paver 1 or ruler 2 is specified, or has been predetermined by the evaluation unit, or it can be checked for measurement results based on the known position and/or setting of the temperature measuring device during the measurement process.
    [042] According to another embodiment of the present invention, the determination of the cooling behavior of the laid pavement 3 is based not only on the measurement of temperatures at a respective specific measurement point 351, 351a, 351b, but a plurality of measurement points can be considered simultaneously in the case of each temperature measurement, for example at measuring points 350, 351 and 352 at the moment in time tl. As an example, all measuring points within a line or different measuring points on different lines can be taken into account. In this regard, the plurality of measurement points, according to an embodiment of the invention, can be combined by means of a mathematical model, so that possible incorrect measurements or other points outside the temperature measurement values are compensated, filtered or at least remain without substantial influence in determining the cooling behavior and the respective control of the placing process based on said cooling behavior. According to a simple model, one or a plurality of measuring points that fall, by a predetermined amount, above or below an arithmetic mean of all measuring points are not taken into account in determining the cooling behavior. Thus, isolated deviations, which are based either on incorrect measurements or on irregularities of the material placed, eg inclusions, are not considered. Additionally or alternatively, the verified cooling behavior, according to another embodiment of the invention, may be based on the average of simultaneously detected temperature data from a plurality of measurement points. The mean may comprise, for example, an arithmetic mean, a median, a square mean and/or a weighted arithmetic mean of the temperature values of the plurality of simultaneously detected measurement points.
    [043] Figure 6 schematically shows the steps of a method according to an embodiment of the present invention used for the repeated detection of temperature values and to determine the cooling behavior of pavement 3 placed by a paver 1 or a road finisher . The method can be performed by the above-mentioned system 100. In step 610, the temperature of one or a plurality of specific measurement points 351, 351a, 351b is detected by the device for measuring temperatures 120, 130 at a first moment in the time (tl) during the pavement laying process. As described above, the specific measurement point or points are located in the area of the laid floor 3, which is detected by the temperature measuring device 120, 130, being specified, predetermined or verified. In a subsequent step 620, the temperature values of the measuring point or points are again detected by the device for measuring temperatures 120, 130 at a second moment in time due to the fact that the measuring point or points are located in the detection area 320 of the device for measuring temperatures 120, 130 at said second point in time. Step 620 can be repeated several times so that other temperature values of the point or measurement points can be detected at other points in time. The detected temperature values of the point or specific measurement points at at least two different points in time are then used by the evaluation unit 140, 140a in a step 630 to determine the cooling behavior of the laid pavement 3. In addition, it can be produced, stored or exhibited the cooling behavior thus verified, in accordance with another embodiment of the present invention. For display purposes, a screen can be provided on the paver 1 or at a location remote from the paver, said screen being connected to the evaluation unit 140, 140a or system 100. For storage or documentation purposes, the data can be stored in a memory of the evaluation unit 140, 140a or of the system 100. Likewise, the data can be transmitted to a remote server or to a cloud service.
    [044] According to an embodiment of the present invention, the cooling behavior thus verified is then used in another step 640, for example, to adapt or control the placement process. Step 640 need not be performed by system 100, it is optional for said system 100 in accordance with the present invention. The method according to Figure 6 can start from the beginning or can be carried out continuously during the laying process or the movement of the paver 1.
    [045] Figure 7 shows the steps of a corresponding control method 700 according to another embodiment of the present invention, which is performed when the computer-executable instructions of the computer-readable storage media are executed. For the purpose of execution, the evaluation unit 140 or 140a or a control device that communicates with the evaluation unit 140, 140a via an interface suitable for data transmission can be used. Computer execution of the computer-executable instructions can be done by means of a control device of system 100 within thermographic module 5, on paver 1 or at a location remote from paver 1. In step 710 of control method 700, the device for measuring temperatures 120, 130 or a thermographic module 5 is instructed to detect, during the laying process, the temperature of the pavement 3 laid by a paver 1, as described above. Step 710 may comprise the instruction to the temperature measuring device 120, 130 and its necessary parameters. According to another embodiment of the invention, step 710 also comprises one or a plurality of instructions and/or their parameters necessary for the device for measuring temperatures 120, 130 for a plurality of measurements at at least two different points in time ( t1, t2, t3). Alternatively, measurements at at least two different points in time (t1, t2, t3) can be separate steps of control method 700.
    [046] In step 720, the temperature values are received or evaluated, which were detected by the device for measuring temperatures 120, 130 during the placement process. If necessary, step 720 comprises, according to an embodiment of the invention, receiving or evaluating other parameters, such as the time interval between measurements or the position of the measurement points. In step 730 of the control method, the cooling behavior of pavement 3 is checked in accordance with the above-mentioned realizations. In step 740 of the control method, the verified cooling behavior is produced, stored or transmitted to a connected receiving unit. Step 740 is optional here and refers only to backing up, transferring or displaying verified cooling behavior. The cooling behavior thus verified can then be used in another step 750, for example, for adaptation or control of the placement process. The respective control data or control commands can be transmitted to the respective machines of the placing process in step 750 or in another step. Steps 740 and 750 are optional for the present invention herein and refer only to a further embodiment of the invention.
    [047] Methods 600 and 700, according to the above-described embodiments of system 100 or paver 1, can advantageously be further developed. In Figures 6 and 7, optional steps are indicated by a broken line. Thus, method 600 can be carried out by the system 100 described above and advantageously further developed. Method 700 can be carried out by the evaluation unit 140, 140a and advantageously further developed. As another embodiment of the invention, the control method according to Figure 7 can be performed instead of the aforementioned evaluation unit 140, 140a. In this embodiment, the evaluation unit 140, 140a is configured as a software program.
    权利要求:
    Claims (15)
    [0001]
    1. SYSTEM (100) INCLUDING DEVICE FOR MEASURING TEMPERATURES (120) FOR REPEATED DETECTION OF SURFACE TEMPERATURE VALUES OF A FLOOR (3) PLACED BY A PAVING MACHINE (1), characterized in that the system (100) is configured to determine a surface temperature value of each of a plurality of specific measurement points (351, 351a, 351b) on at least two different occasions in time using the device for measuring temperatures (120), said plurality of specific points measuring (351, 351a, 351b) being in an area of the laid floor (3), and the system (100) comprising an evaluation unit (140, 140a), said evaluation unit (140, 140a) being configured to determine the cooling behavior of the laid pavement (3) from at least two surface temperature values that have been determined by the temperature measuring device for each of the plurality of specific points. measurement records (351, 351a, 351b) on at least two different occasions in time.
    [0002]
    2. SYSTEM (100) according to claim 1, characterized in that the respective time interval between the at least two different occasions in time is predetermined, and in which the evaluation unit (140, 140a) is further configured to determine the cooling behavior of the laid pavement (3) based on the respective time interval between the at least two different occasions in time.
    [0003]
    3. SYSTEM (100) according to any one of claims 1 or 2, characterized in that the surface temperature values are determined during or after pre-compaction by a ruler (2) of a paver (1), in which the device for measuring temperatures (12 0) is configured for detecting surface temperature values at measuring points in the area of the laid pavement (3) each having a predetermined or measurable distance to the paver (1) or to the ruler (2), and in which the position of the specific measurement point (351, 351a, 351b) is verified based on its respective distance to the paver (1) or to the ruler (2) on at least two different occasions in time during the placement process.
    [0004]
    4. SYSTEM (100) according to any one of the preceding claims, characterized in that the device for measuring temperatures (120) is configured to determine a plurality of surface temperature values in a two-dimensional area (310, 320, 330) on the surface of the laid pavement (3) on each of the occasions in time, and wherein the at least two different occasions in time correspond to at least two different two-dimensional areas (310, 320, 330), said at least two different areas two-dimensional areas (310, 320, 330) overlapping each of the at least two different two-dimensional areas (310, 320, 330) including the specific measurement point (351, 351a, 351b).
    [0005]
    5. SYSTEM (100), according to any one of the preceding claims, characterized in that the surface temperature values are determined line by line by the device for measuring temperatures (120), each line determined (311, 321, 331) representing a temperature profile of the laid pavement (3) transverse to the direction of travel (300) of the paver (1).
    [0006]
    6. SYSTEM (100) according to claims 4 and 5, characterized in that the device for measuring temperatures (120) is configured to determine surface temperature values of a plurality of lines at each occasion in time, and in which said plurality of lines at one time in time represents one of the two-dimensional areas (310, 320, 330), respectively.
    [0007]
    7. SYSTEM (100) according to any one of the preceding claims, characterized in that said system (100) or the device for measuring temperatures (120) comprises units (5a) for mounting on a paver (1) or a ruler (2) , and in which the surface temperature values are determined by the device for measuring temperatures (120) during the process of laying the pavement (3) , and in which the surface temperature values are determined by the device for measuring temperatures (120) continuously, at periodic intervals or depending on the speed of the laying process or the paver (D •
    [0008]
    8. SYSTEM (100), according to any one of the preceding claims, characterized in that the evaluation unit (140, 140a) is configured to determine the cooling behavior of the laid pavement (3) based on a predetermined average of the temperature values of surface of the plurality of specific measurement points (350, 351, 352).
    [0009]
    9. SYSTEM (100) according to claim 8, characterized in that the predetermined mean is an arithmetic mean, a median, a square mean and/or a weighted arithmetic mean of the surface temperature values of the plurality of specific measurement points ( 350, 351, 352).
    [0010]
    10. SYSTEM (100), according to any one of the preceding claims, characterized in that the evaluation unit (140, 140a) is configured to determine the cooling behavior of the laid pavement (3) based on a predetermined mathematical model, said mathematical model still based on at least one additional parameter, the at least one additional parameter comprising a base temperature, pavement thickness, ambient air temperature, air humidity, cloud cover, wind speed and/ or a property of the pavement material.
    [0011]
    11. SYSTEM (100), according to any one of the preceding claims, characterized in that the evaluation unit (140, 140a) is configured to determine a control factor of the pavement placement process (3), wherein said factor of The control comprises a machine speed of the laying process, a machine start or stop signal of the laying process and/or a conveyor belt speed of the laying process, and in which the evaluation unit (140, 140a) still is configured to determine the control factor using the determined behavior of the laid pavement cooling (3).
    [0012]
    12. SYSTEM. (100) according to any one of the preceding claims, characterized in that the device for measuring temperatures (120, 130) comprises an infrared camera, an infrared scanner, a pivotable pyrometer, a set of pyrometers and/or a scanning chamber in line.
    [0013]
    13. PAVING MACHINE (1), characterized in that it comprises a device for measuring temperatures (120) or a system (100), as defined in any one of the preceding claims.
    [0014]
    14. METHOD (600), to determine the cooling behavior of a pavement (3) placed by a paver (1), said method being characterized by comprising: the determination (610) by a temperature measurement device of a first surface temperature value for each of a plurality of specific measurement points (351, 351a, 351b) at a first occasion in time during a pavement laying process (3), said plurality of specific measurement points (351 , 351a, 351b) being in an area of the pavement (3) placed by a paver (1); the determination (620) by a temperature measuring device of at least one second surface temperature value for each of said plurality of specific measurement points (351, 351a, 351b) on at least one second occasion in time during the placement process, said second moment in time being after said first occasion in time; the determination (630) of the cooling behavior of the laid pavement (3) from at least two determined surface temperature values for each of the plurality of specific measurement points (351, 351a, 351b).
    [0015]
    15. COMPUTER READING STORAGE MEDIA, WITH EXECUTABLE INSTRUCTIONS BY COMPUTER THAT, WHEN EXECUTED, PERFORM THE CONTROL METHOD (700), characterized by comprising the following steps: instruct (710) the temperature measurement device to determine a first surface temperature value for each of a plurality of specific measurement points (351, 351a, 351b) at a first occasion in time during a pavement laying process (3), said specific measurement point (351, 351a, 351b) being in an area of the pavement (3) placed by a paver (1); instruct (720) the temperature measurement device to determine at least one second surface temperature value for each of the plurality of specific measurement points (351, 351a, 351b) on at least one second occasion in time during the process of placement, said second occasion in time being after the first occasion in time; receiving (730) the at least two determined surface temperature values; and determining (740) the cooling behavior of the laid pavement (3) from at least two determined surface temperature values for each of the plurality of specific measurement points (351, 351a, 351b).
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    US20160061755A1|2016-03-03|
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    法律状态:
    2016-03-01| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-10-30| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-04-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-18| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-07-13| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 25/08/2015, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP14182526.5|2014-08-27|
    EP14182526.5A|EP2990531A1|2014-08-27|2014-08-27|System for road finisher with a temperature measuring device, method for determining a cooling behaviour und computer-readable storage medium|
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