Thermographic module for pavers

Patent metadata

Field	Value
Publication number	US-10482330-B2
Application number	US-201514817823-A
Country	US
Kind code	B2
Filing date	Aug 4, 2015
Priority date	Aug 5, 2014
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

A system comprising a temperature measurement device for continuously detecting temperature values of a pavement laid by means of a paver. The system further comprises an image recording unit and an evaluation unit. The evaluation unit is configured to determine an area of the laid pavement as a deviation area, if, based on temperature values detected for the area, one or more deviation criteria are fulfilled, wherein the determination is carried out during laying and in temporal proximity to the detection of the temperature values for the area. The system is additionally configured to generate, making use of the image recording unit, an image assigned to the deviation area.

First claim

What is claimed is:

1. A system comprising:
a temperature measurement device configured to continuously detect temperature values of a pavement laid by means of a paver during a pavement laying process;
an image recording unit; and
an evaluation unit configured to determine an area of the laid pavement as a deviation area based on temperature values detected for the area fulfilling one or more deviation criteria, wherein the determination is carried out during the pavement laying process and in temporal proximity to the detection of the temperature values for the area;
wherein the system is configured to generate, making use of the image recording unit, an image assigned to the deviation area, the deviation area is a first deviation area, the evaluation unit is configured to assign the same image to a second deviation area of the laid pavement as auxiliary information, and the evaluation unit is configured to carry out the assignment on the basis of a temporal-spatial relationship between the first and second deviation areas and one or more predefined parameters representing causes for incorrect measurements, and wherein the second deviation area is different than the first deviation area.

2. The system according to claim 1 wherein the system is configured for generating the image in temporal proximity to the detection of the temperature values such that the image serves to document the detection of the temperature values for the deviation area.

3. The system according to claim 1 wherein the deviation criteria are configured such that a deviation area will be determined if an incorrect measurement has taken place that comprises a detection of temperature of objects other than the laid pavement or a malfunction or an incorrect orientation of the paver or of the temperature measurement device.

4. The system according to claim 1 wherein the deviation criteria comprise relative or absolute lower limits, upper limits or inhomogeneities of temperature values.

5. The system according to claim 1 wherein the detected temperature values are laying-process temperature values detected by the temperature measurement device during or after precompacting through a screed of the paver.

6. The system according to claim 1 wherein the evaluation unit is configured for assigning the image to the deviation area as auxiliary information, and the system is configured for storing the auxiliary information together with a two-dimensional profile of laying temperature formed on the basis of the detected temperature values.

7. The system according to claim 1 wherein the temperature measurement device comprises a thermal scanner, a pivotable pyrometer, a pyrometer array or an infrared camera, and the image recording unit comprises an infrared camera or an optical camera.

8. The system according to claim 1 wherein the system is configured for storing the detected temperature values line by line, each line representing a temperature profile of the paved layer transverse to a travelling direction of the paver, and the image recording unit is configured for generating as an image an overall image of a section of the laid pavement.

9. The system according to claim 1 wherein the temperature measurement device and the image recording unit are integrated in a thermographic module, which is mountable on a paver above a screed of the paver.

10. An arrangement comprising:
a paver for laying pavement; and
the system according to claim 1 associated with the paver.

11. The arrangement according to claim 10 wherein the paver includes the system.

12. The arrangement according to claim 10 wherein the paver includes the temperature measurement device and the image re-cording unit of the system, and the evaluation unit of the system is arrangeable at a location remote from the paver and configured to be in radio communication with the temperature measurement device and the image recording unit.

13. A method for documenting detection of temperature of pavement laid by a paver, the method comprising:
detecting continuously or at intervals temperature values of the laid pavement during a pavement laying process;
determining an area of the laid pavement as a first deviation area based on temperature values detected for the area fulfilling one or more deviation criteria, the determination being carried out during the pavement laying process and in temporal proximity to the detection of the temperature values for the area;
generating, with an optical camera, an image assigned to the first deviation area so as to document the detection of the temperature values for the first deviation area; and
associating the image to a second deviation area of the laid pavement as auxiliary information based on a temporal-spatial relationship between the first and second deviation areas and one or more predefined parameters representing causes for incorrect measurements, wherein the second deviation area is different than the first deviation area.

14. A non-transitory computer-readable storage medium with computer-executable instructions, which, when executed, carry out a control method comprising:
instructing a temperature measurement device to continuously or at intervals detect, during a pavement laying process, temperature of pavement laid by a paver;
evaluating detected temperature values during the pavement laying process and in temporal proximity to the detection of the temperature values;
determining an area of the laid pavement as a first deviation area based on temperature values detected for the area fulfilling one or more deviation criteria;
instructing an image recording unit to generate for the first deviation area an assigned image so as to document the detection of the temperature values for the first deviation area; and
assigning the image to a second deviation area of the laid pavement as auxiliary information based on a temporal-spatial relationship between the first and second deviation areas and one or more predefined parameters representing causes for incorrect measurements, wherein the second deviation area is different than the first deviation area.

15. The system according to claim 1 wherein the temporal proximity is a time frame of up to 5 seconds.

16. The system according to claim 15 wherein the evaluation unit is configured to assign the image to the deviation area as auxiliary information, and the system is configured to store the auxiliary information together with a two-dimensional profile of laying temperature formed on the basis of the detected temperature values.

17. The system according to claim 1 wherein the temporal proximity to the detection of the temperature values for the area is within tenths of a second after the detection of the temperature values for the area.

18. The system according to claim 8 wherein the first and second deviation areas are represented in successive lines of stored detected temperature values.

19. The system according to claim 1 wherein the image recording unit comprises an optical camera.

20. The system according to claim 1 wherein the image documents a cause for the first and second deviation areas.

21. A system comprising:
a temperature measurement device configured to continuously detect temperature values of a pavement laid by means of a paver during a pavement laying process;
an image recording unit; and
an evaluation unit configured to determine an area of the laid pavement as a deviation area based on temperature values detected for the area fulfilling one or more de

Assignees

• Joseph Voegele Ag

Inventors

• Buschmann Martin
• Delius Henning
• Rutz Arnold

Classifications

• G01J2005/0077

  Imaging · CPC title

• E01C23/01 Primary

  Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed {or reference line} supports (form rails E01C19/50); Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs (E01C23/07 takes precedence; measuring roughness or irregularity in general G01B) · CPC title

• G06T7/0004

  Industrial image inspection · CPC title

• E01C2301/00

  Machine characteristics, parts or accessories not otherwise provided for · CPC title

• G01J5/0859

  Sighting arrangements, e.g. cameras · CPC title